Energy-saving micro-pressure switch and energy-saving device

Abstract

The invention discloses an energy-saving micro-pressure switch and an energy-saving device, the energy-saving micro-pressure switch comprises a flange base, a flange cover, a diaphragm, a shell, an end cover and a switch assembly, the flange base, the flange cover, the shell and the end cover are sequentially connected from front to back, the flange base is provided with a through hole, and the connecting surfaces of the flange base and the flange cover are provided with concave platforms; the diaphragm is arranged on the concave tables of the flange base and the flange cover, the effective position of the diaphragm is not in contact with the connecting surface of the flange base and the flange cover, and the switch assembly is arranged in the shell; the diaphragm is circular, and the diameter of the effective position of the diaphragm is not less than 20mm; the invention provides the energy-saving micro-pressure switch and the energy-saving device which are more sensitive and lower in detection pressure.

Description

Technical Field

[0001] This invention relates to the technical field of energy-saving hydraulic and pneumatic components, specifically an energy-saving micro-pressure switch and energy-saving device. Background Technology

[0002] Pressure switches are an important component in energy-saving hydraulic and pneumatic devices. The pressure being measured may originate from liquids or gases. When the measured pressure reaches its rated value, the pressure switch can issue an alarm or control signal. The working principle of a pressure switch is as follows: when the measured pressure exceeds the rated value, the free end of the elastic element is displaced, directly or after comparison, pushing the switching element to change its on / off state, thereby controlling the measured pressure.

[0003] Chinese Patent Publication No. CN204113374U discloses a pressure switch and a filter device incorporating the same. The pressure switch includes: a channel with its upstream and downstream ends connected to the upstream and downstream sides of a filter, respectively; a piston movably disposed within the channel; and a spring biasing the piston to the upstream end of the channel. The pressure switch further includes a buffer chamber, through which the upstream end of the channel is connected to the upstream side of the filter device. The buffer chamber in the filter pressure switch provided by this invention creates a buffer space when the pressure switch is open, preventing contaminated oil from entering the pressure switch channel, thereby protecting the seal between the piston and the inner surface of the channel and extending the service life of the pressure switch.

[0004] However, existing pressure switches can only detect relatively large pressure values. Conversely, the smaller the pressure value detected by the pressure switch, the more sensitive it is. This results in better energy-saving effects for energy-efficient hydraulic and pneumatic devices.

[0005] In summary, the existing technology still lacks a more sensitive, energy-saving micro-pressure switch that requires less detection pressure. Summary of the Invention

[0006] This invention overcomes these problems and provides a more sensitive, energy-saving micro-pressure switch and energy-saving device with lower detection pressure.

[0007] To achieve this objective, the present invention provides the following technical solution:

[0008] In a first aspect, the present invention provides an energy-saving micro-pressure switch, comprising a flange base, a flange cover, a diaphragm, a housing, an end cover, and a switch assembly. The flange base, the flange cover, the housing, and the end cover are connected sequentially from front to back. The flange base has a through hole, and the connecting surfaces of the flange base and the flange cover each have a recess. The diaphragm is disposed on the recess of the flange base and the flange cover, and the effective position of the diaphragm does not contact the connecting surfaces of the flange base and the flange cover. The switch assembly is disposed within the housing. The diaphragm is circular, and the diameter of the effective position of the diaphragm is not less than 20 mm.

[0009] Preferably, the cross-section of the circular diaphragm is a threaded surface.

[0010] Preferably, the diameter of the effective position of the diaphragm is 20-200 mm.

[0011] Preferably, the thickness of the diaphragm is no greater than 0.5 mm.

[0012] Preferably, the switch assembly includes a sensing piston, a spring, a sensing switch, a switch base, and a main board. The spring is disposed inside the sensing piston, the sensing switch is disposed between two switch bases, and the main board is connected to one of the switch bases. The sensing switch and the main board are connected via wires. In one state, the diaphragm deforms upon sensing pressure, and the diaphragm pushes the sensing piston backward until the sensing piston abuts against the sensing switch, at which point the energy-saving micro-pressure switch is turned on.

[0013] Preferably, the switch assembly includes a sensing piston, a spring, a sensing switch, a plug, and a socket. The spring is disposed within the sensing piston, the sensing switch is connected to the plug via a wire, the socket is disposed at the end of the end cap, and the plug is disposed within the socket.

[0014] Preferably, it also includes an adjusting screw, on which the inductive switch is mounted.

[0015] Preferably, the flange base and the flange cover are connected by screws.

[0016] Preferably, the diaphragm is welded to the flange cover.

[0017] Preferably, the diaphragm is made of metal.

[0018] A second aspect of the present invention provides an energy-saving hydraulic and pneumatic device, including the energy-saving micro-pressure switch shown in the present invention.

[0019] Preferably, the energy-saving micro-pressure switch of the present invention includes a flange base, a flange cover, a diaphragm, a housing, an end cover, and a switch assembly. The flange base, the flange cover, the housing, and the end cover are connected sequentially from front to back. The flange base has a through hole, and the connecting surfaces of the flange base and the flange cover each have a recess. The diaphragm is disposed on the recess of the flange base and the flange cover, and the effective position of the diaphragm does not contact the connecting surfaces of the flange base and the flange cover. The switch assembly is disposed inside the housing. The diaphragm is circular, and the diameter of the effective position of the diaphragm is not less than 20 mm.

[0020] Preferably, the cross-section of the circular diaphragm is a threaded surface.

[0021] Preferably, the diameter of the effective position of the diaphragm is 5 mm or more, and the larger the effective area, the higher the accuracy.

[0022] Preferably, the thickness of the diaphragm is no greater than 0.5 mm.

[0023] Preferably, the switch assembly includes a sensing piston, a spring, a sensing switch, a switch base, and a main board. The spring is disposed inside the sensing piston, the sensing switch is disposed between two switch bases, and the main board is connected to one of the switch bases. The sensing switch and the main board are connected via wires. In one state, the diaphragm deforms upon sensing pressure, and the diaphragm pushes the sensing piston backward until the sensing piston abuts against the sensing switch, at which point the energy-saving micro-pressure switch is turned on.

[0024] Preferably, the switch assembly includes a sensing piston, a spring, a sensing switch, a plug, and a socket. The spring is disposed within the sensing piston, the sensing switch is connected to the plug via a wire, the socket is disposed at the end of the end cap, and the plug is disposed within the socket.

[0025] Preferably, it also includes an adjusting screw, on which the inductive switch is mounted.

[0026] Preferably, the flange base and the flange cover are connected by screws.

[0027] Preferably, the diaphragm is welded to the flange cover.

[0028] Preferably, the diaphragm is made of metal.

[0029] Compared with existing technologies, the beneficial effects and significant advancements of this invention are as follows: This invention provides a novel energy-saving micro-pressure switch, which allows adjustment of the detection pressure range of the pressure switch by changing the thickness and diameter of the diaphragm. This enables switching regulation under minute pressures. Attached Figure Description

[0030] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the embodiments of the present invention will be briefly introduced below.

[0031] Obviously, the accompanying drawings described below are only some of the drawings of the embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort, but these other drawings are also within the scope of the drawings required for the embodiments of the present invention.

[0032] Figure 1 This is an exploded view of an energy-saving micro-pressure switch according to Embodiment 1 of the present invention;

[0033] Figure 2 This is an exploded view of another energy-saving micro-pressure switch according to Embodiment 2 of the present invention;

[0034] Figure 3 This is a partial structural schematic diagram of an energy-saving micro-pressure switch according to Embodiment 1 or 2 of the present invention;

[0035] Figure 4 This is a partial structural schematic diagram of an energy-saving micro-pressure switch according to Embodiment 1 or 2 of the present invention;

[0036] In the diagram, 1. Flange base, 2. Flange cover, 3. Housing, 4. End cover, 5. Sensing piston, 6. Spring, 7. Switch base, 8. Inductive switch, 9. Main board, 10. Wire, 11. Adjusting screw, 12. Screw, 13. Nut, 14. Combination gasket, 15. Plug, 16. Socket, 17. Diaphragm, 1.1. Recess, 1.2. Through hole. Detailed Implementation

[0037] To make the objectives, technical solutions, beneficial effects, and significant advancements of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings provided in the embodiments of the present invention.

[0038] Obviously, all the embodiments described are only some embodiments of the present invention, and not all embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that the terms "first," "second," and "third" (if present), etc., in the specification, claims, and accompanying drawings of the embodiments of this invention, are only used to distinguish different objects and not to describe a specific order. Furthermore, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0040] What needs to be understood is:

[0041] In this invention, unless otherwise explicitly specified and limited, the terms "installation", "connection", "fixation" and the like should be interpreted broadly. For example, it can be a fixed connection, a detachable connection or a movable connection, or it can be an integral part; it can be a direct connection, an indirect connection through an intermediate medium, or an invisible signal connection, or even an optical connection; it can be the internal connection of two elements or the interaction between two elements, unless otherwise explicitly limited.

[0042] Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] It should also be noted that the following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0044] The technical solution of the present invention will now be described in detail with reference to specific embodiments.

[0045] Example 1

[0046] like Figure 1 , 3As shown in Figure 4, an energy-saving micro-pressure switch includes a flange base 1, a flange cover 2, a diaphragm 17, a housing 3, an end cover 4, and a switch assembly. The flange base 1, flange cover 2, housing 3, and end cover 4 are connected sequentially from front to back. The flange base 1 has a through hole 1.2 in the middle for oil droplets to pass through. The connecting surfaces of the flange base 1 and the flange cover 2 are both provided with recesses 1.1. The diaphragm 17 is disposed on the recesses 1.1 of the flange base 1 and the flange cover 2, and the effective position (R) of the diaphragm 17 does not contact the connecting surfaces of the flange base 1 and the flange cover 2. The switch assembly is disposed inside the housing 3. The diaphragm 17 is circular, and the diameter R of the effective position of the diaphragm 17 is more than 5 mm, and the thickness of the diaphragm 17 is not greater than 0.5 mm. The switch assembly includes a sensing piston 5, a spring 6, a sensing switch 8, a switch base 7, and a main board 9. The spring 6 is disposed inside the sensing piston 5, the sensing switch 8 is disposed between two switch bases 7, and the main board 9 is connected to one switch base 7. The sensing switch 8 and the main board 9 are connected by a wire 10. In one state, the diaphragm 17 deforms upon sensing pressure, and the diaphragm 17 pushes the sensing piston 5 to move backward until the sensing piston 5 abuts against the sensing switch 8. At this time, the energy-saving micro-pressure switch is turned on.

[0047] In this embodiment, the housing 3 is made of explosion-proof material, and a nut 13 is provided on the top of the housing 3.

[0048] In this embodiment, the flange base 1 has a threaded interface at its head end, and the combined gasket 14 is disposed at the threaded interface.

[0049] In this embodiment, the cross-section of the circular diaphragm 17 is a threaded surface.

[0050] In this embodiment, an adjusting screw 11 is also included, and a sensor switch 8 is mounted on the adjusting screw 11.

[0051] In this embodiment, the flange base 1 and the flange cover 2 are connected by screws 12.

[0052] In this embodiment, the diaphragm 17 is welded to the flange cover 2.

[0053] In this embodiment, the diaphragm 17 is made of metal.

[0054] Example 2

[0055] like Figure 2-4As shown, an energy-saving micro-pressure switch includes a flange base 1, a flange cover 2, a diaphragm 17, a housing 3, an end cover 4, and a switch assembly. The flange base 1, flange cover 2, housing 3, and end cover 4 are connected sequentially from front to back. The flange base 1 has a through hole 1.2 for oil droplets to pass through. The connecting surfaces of the flange base 1 and flange cover 2 are both provided with recesses 1.1. The diaphragm 17 is disposed on the recesses 1.1 of the flange base 1 and flange cover 2, and the effective position R of the diaphragm 17 does not contact the connecting surfaces of the flange base 1 and flange cover 2. The switch assembly is disposed within the housing 3. The diaphragm 17 is circular, and the diameter R of the effective position of the diaphragm 17 is greater than 5 mm, and the thickness of the diaphragm 17 is not greater than 0.5 mm. The switch assembly includes a sensing piston 5, a spring 6, a sensing switch 8, a plug 15, and a socket 16. The spring 6 is disposed within the sensing piston 5. The sensing switch 8 and plug 15 are connected by a wire. The socket 16 is disposed at the end of the end cover 4, and the plug 15 is disposed within the socket 16. In one state, the diaphragm 17 deforms upon sensing pressure, and the diaphragm 17 pushes the sensing piston 5 to move backward until the sensing piston 5 abuts against the sensing switch 8, at which point the energy-saving micro-pressure switch is turned on.

[0056] In this embodiment, the housing 3 is made of explosion-proof material, and a nut 13 is provided on the top of the housing 3.

[0057] In this embodiment, the flange base 1 has a threaded interface at its head end, and the combined gasket 14 is disposed at the threaded interface.

[0058] In this embodiment, the cross-section of the circular diaphragm 17 is a threaded surface.

[0059] In this embodiment, an adjusting screw 11 is also included, and a sensor switch 8 is mounted on the adjusting screw 11.

[0060] In this embodiment, the flange base 1 and the flange cover 2 are connected by screws.

[0061] In this embodiment, the diaphragm 17 is welded to the flange cover 2.

[0062] In this embodiment, the diaphragm 17 is made of metal.

[0063] Example 3: Membrane Diameter Screening

[0064] Energy-saving micro-pressure switches of experimental groups 1-6 were prepared. The only difference between the energy-saving micro-pressure switches of experimental groups 1-6 and the energy-saving micro-pressure switch of Example 1 is the diameter R of the effective position of the diaphragm. Specifically, the diameter R of the effective position of the diaphragm in group 1 is 5 mm, in group 2 it is 17 mm, in group 3 it is 20 mm, in group 4 it is 40 mm, in group 5 it is 50 mm, and in group 6 it is 80 mm.

[0065] Energy-saving micro-pressure switches for experimental groups 1-6 were prepared, and then the detection pressure range of each group's energy-saving micro-pressure switches was tested. The results are shown in Table 1.

[0066] Table 1

[0067]

[0068]

[0069] As can be seen from Table 1, the effective position of the diaphragm has a diameter R of more than 20 mm, which can detect minute pressures of 0.05-1 kg.

[0070] Example 4: Membrane Thickness Screening

[0071] Energy-saving micro-pressure switches for experimental groups 6-8 were prepared. The only difference between the energy-saving micro-pressure switches in experimental groups 6-8 and those in Example 1 is the thickness of the diaphragm; the effective diameter R of the diaphragm is 20 mm in all groups. Specifically, the diaphragm thickness for group 6 is 0.03 mm, for group 2 it is 0.05 mm, and for group 3 it is 0.1 mm.

[0072] Energy-saving micro-pressure switches for experimental groups 6-8 were prepared, and then the detection pressure range of each group's energy-saving micro-pressure switches was tested. The results are shown in Table 2.

[0073] Table 2

[0074] Grouping diaphragm thickness Detection pressure range Group 7 0.03mm 0.002-1kg Group 8 0.05mm 0.003-1kg Group 9 0.1mm 0.01-1kg Group 10 0.2mm 0.02-1Kg Group 11 0.4mm 0.05-1Kg Group 12 0.5mm 0.1-2.5kg

[0075] As shown in Table 1, a diaphragm with a thickness of less than 0.4 mm can detect minute pressures ranging from 0.05 to 1 kg.

[0076] Example 5

[0077] This embodiment uses the energy-saving micro-pressure switch prepared in Example 1 in an energy-saving hydraulic device for wind power generation. In this embodiment, the energy-saving hydraulic device for wind power generation utilizes the energy-saving micro-pressure switch from this embodiment to more sensitively detect pressure changes, thereby opening or closing the energy-saving hydraulic device. This achieves high efficiency and energy saving.

[0078] In the description process of the above instruction manual:

[0079] The terms "this embodiment," "an embodiment of the present invention," "as shown," "further," and "further improved technical solutions," etc., indicate that the specific features, structures, materials, or characteristics described in the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms are not necessarily directed at the same embodiment or example, and the specific features, structures, materials, or characteristics described can be combined or combined in any suitable manner in one or more embodiments or examples. Furthermore, without causing contradiction, those skilled in the art can combine or combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0080] Finally, it should be noted that:

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them;

[0082] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. Non-essential improvements, adjustments or substitutions made by those skilled in the art based on the content of this specification are all within the scope of protection claimed by the present invention.

Claims

1. An energy saving micro pressure switch characterized in that, The energy-saving micro-pressure switch comprises a flange base, a flange cover, a diaphragm, a shell, an end cover and a switch assembly. The flange base, the flange cover, the shell and the end cover are sequentially connected from front to back, the flange base is provided with a through hole, the connecting surfaces of the flange base and the flange cover are each provided with a recess, the diaphragm is arranged on the recesses of the flange base and the flange cover, and the effective position of the diaphragm is not in contact with the connecting surfaces of the flange base and the flange cover, and the switch assembly is arranged in the shell. The diaphragm is circular, and the diameter of the effective position of the diaphragm is not less than 20 mm.

2. An energy saving micro pressure switch as claimed in claim 1, wherein, The cross section of the circular diaphragm is a threaded surface.

3. The energy saving micro pressure switch according to claim 1, wherein, The diameter of the effective position of the diaphragm is 20-200 mm.

4. The energy saving micro pressure switch according to claim 1 or 3, wherein, The thickness of the diaphragm is not greater than 0.5 mm.

5. The energy saving micro pressure switch according to claim 1, wherein, The switch assembly comprises an induction piston, a spring, an induction switch, a switch seat and a main plate, the spring is arranged in the induction piston, the induction switch is arranged between two switch seats, the main plate is connected with one switch seat, and the induction switch and the main plate are connected through wires. In one state, the diaphragm is deformed by pressure, the diaphragm pushes the induction piston to move backward until the induction piston abuts against the induction switch, and at this time, the energy-saving micro-pressure switch is turned on.

6. The energy saving micro pressure switch according to claim 1, wherein, The switch assembly comprises an induction piston, a spring, an induction switch, a plug and a socket, the spring is arranged in the induction piston, the induction switch and the plug are connected through wires, the socket is arranged at the end of the end cover, and the plug is arranged in the socket.

7. An energy saving micro pressure switch according to claim 5 or 6, wherein The induction switch is mounted on an adjusting screw.

8. The energy saving micro pressure switch of claim 1, wherein, The flange base and the flange cover are connected through screws.

9. The energy saving micro pressure switch of claim 1, wherein, The diaphragm is welded with the flange cover.

10. An energy saving hydraulic, pneumatic device, characterized in that, The energy-saving micro-pressure switch comprises the energy-saving micro-pressure switch shown in any one of claims 1-9. The energy-saving micro-pressure switch comprises the energy-saving micro-pressure switch shown in any one of claims 1-9.

Images