Integrated electromagnetic valve structure for oxygen generator
By designing an integrated solenoid valve structure, the assembly process is simplified, the problems of complex structure and poor air tightness of existing diaphragm solenoid valves are solved, and higher air tightness and performance are achieved.
Patent Information
- Application Number
- CN202422538290.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing diaphragm solenoid valve for oxygen concentrators has a complex structure, which makes assembly difficult and has poor air tightness, and is prone to gap problems.
An integrated solenoid valve structure is designed, including a valve body with a valve cavity, an inner nest, a valve stem, a sealing ring and other components. The external retaining ring can be quickly removed by screws to achieve convenient disassembly, reduce assembly components and improve air tightness.
The assembly process is simplified, the assembly gap is reduced, and the air tightness and performance are improved.
Smart Images
Figure CN223453583U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to technical fields, concretely relates to an integrated electromagnetic valve structure for oxygen generator. BACKGROUND
[0002] Oxygen generator electromagnetic valve is an indispensable part of oxygen generator, and its operation capacity directly determines the oxygen production capacity of the whole oxygen generator. Oxygen generator electromagnetic valve generally has direct cut-off type and diaphragm type, among which, diaphragm type oxygen generator electromagnetic valve is more common.
[0003] The basic structure of the diaphragm type electromagnetic valve of the oxygen generator includes a valve body, a valve rod with a diaphragm, an electromagnetic valve as a pilot valve and an airflow pipeline. The valve rod has an upper diaphragm and a lower diaphragm to form a linkage assembly. The airflow of the airflow pipeline is switched on and off by the pilot valve, the flow direction of the airflow is switched, the linkage assembly is driven by the air pressure to form a face seal between the upper diaphragm and the sealing surface of the valve body, and the oxygen concentrator is controlled to switch the air inlet and the air outlet. Further, two pilot valves are generally arranged on the valve body, and the control of the two pilot valves can control the air inlet and air outlet of the molecular sieve on the left and right sides, thereby realizing the reversing of the air path.
[0004] The structure of the diaphragm type electromagnetic valve of the prior art is relatively complex, and more accessories are assembled on the valve body. However, the diaphragm type electromagnetic valve has a higher requirement for air tightness. Therefore, more accessories result in more assembly gaps, and problems are more likely to occur during use. In addition, the combination of complex accessories also causes assembly difficulties. INVENTION CONTENTS
[0005] In view of the prior art, the purpose of the utility model is to provide an integrated diaphragm electromagnetic valve with simple structure and scientific design. Compared with the prior art, the diaphragm electromagnetic valve body of the embodiment is integrally made, the overall structure is simple, the assembly parts are few, and the air tightness is strong.
[0006] In order to achieve the above purpose, the utility model adopts the technical scheme: an integrated electromagnetic valve structure for oxygen generator, comprising a valve body with a valve cavity, the valve body is provided with an air inlet hole P, an air outlet hole R and an air outlet hole, a pilot valve is further installed on the valve body, the valve cavity is provided with an inner nest fixed in the circumferential direction of the valve cavity, a valve rod and a rear cover, the valve cavity is provided with a top air hole, a radial air hole connected with the air outlet hole and a bottom mounting port, the two ends of the inner nest are provided with valve grooves, the valve rod penetrates the inner nest and is provided with an upper valve flap and a lower diaphragm flap in the valve grooves at both ends respectively, the valve grooves corresponding to the upper valve flap and the lower diaphragm flap are connected with the air inlet hole P and the air outlet hole R respectively, and the middle valve channel of the inner nest is connected with the air outlet hole.
[0007] As a further arrangement of the above-mentioned scheme, the valve body is drilled with an air flow channel, the end of which is provided with a plug for closure, the air flow channel includes an air inlet flow channel connected with the air inlet hole P and an air outlet flow channel connected with the air outlet hole R, and the other ends of the air inlet flow channel and the air outlet flow channel are both connected with the pilot valve rear communication top air hole.
[0008] As a further arrangement of the above-mentioned scheme, the air inlet hole P communicates with the valve groove corresponding to the lower membrane flap, and the lower membrane flap is driven by the valve rod to switch the communication or closure of the valve groove corresponding to the lower membrane flap with the middle valve channel and the radial air hole.
[0009] As a further arrangement of the above-mentioned scheme, the upper valve flap is further provided with a sealing ring, and the bottom of the valve cavity is provided with an annular embedded rib matched with an inner nest to clamp the upper valve flap and the sealing ring.
[0010] As a further arrangement of the above-mentioned scheme, the rear cover is used for being fixed at the end of the inner nest, and is provided with an annular rib clamping the lower membrane flap, the rear cover is matched with an outer snap spring, the outer ring of the inner nest is provided with a sealing groove, and the sealing groove is provided with a sealing ring.
[0011] Beneficial effects: the integrated electromagnetic valve of the embodiment can quickly disassemble the pilot valve through a screw, and the inner rear cover, the inner nest, the valve rod, the upper valve flap, the lower membrane flap and the sealing ring can be quickly disassembled by removing the outer snap spring, which not only has a simple structure, but also has an integrated structure design of the valve body, compared with the split design of the valve body, the valve seat and the air pipe connection, the pilot valve of the embodiment is directly connected with the valve body to complete assembly, the gap problem of the sealing parts of multiple assembly components is reduced, the air tightness of the overall assembly is improved, and the use performance is improved. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a structural schematic view of the integrated electromagnetic valve of the utility model.
[0013] Figure 2 It is a valve internal structure cross-sectional view of the embodiment.
[0014] Figure 3 It is a valve internal structure view of the embodiment.
[0015] Figure 4 It is an inner nest view of the embodiment.
[0016] Figure 5 It is an inner nest and valve rod valve flap assembly view of the embodiment.
[0017] Figure markings: 1. Valve body; 10. Valve cavity; 101. Top air hole; 102. Radial air hole; 103. Mounting port; 11. Air inlet hole P; 111. Inlet flow channel; 12. Exhaust hole R; 121. Exhaust flow channel; 13. Air outlet hole; 14. Annular embedded edge; 2. Inner nesting; 20. Valve slot; 21. Middle valve channel; 28. Sealing ring; 29. Sealing groove; 3. Valve stem; 31. Upper valve disc; 32. Lower diaphragm disc; 33. Sealing ring; 4. Rear cover; 41. Annular edge; 42. External retaining spring; 8. Pilot valve. DETAILED DESCRIPTION
[0018] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.
[0019] The utility model is an integrated electromagnetic valve structure for an oxygen concentrator, such as Figures 1-5 As shown, it includes a valve body 1 with a valve cavity 10, the valve body 1 is provided with an air inlet P11, an exhaust hole R12 and an air outlet 13, and a pilot valve 8 is also installed on the valve body 1, the valve cavity 10 is provided with an inner nest 2 fixed circumferentially relative to the valve cavity 10, a valve stem 3 and a rear cover 4, the valve cavity 10 is provided with a top air hole 101, a radial air hole 102 connected to the air outlet 13 and a mounting port 103 at the bottom, valve slots 20 are provided at both ends of the inner nest 2, the valve stem 3 passes through the inner nest 2 and is respectively provided with an upper valve flap 31 and a lower membrane flap 32 in the valve slots 20 at both ends, the valve slots 20 corresponding to the upper valve flap 31 and the lower membrane flap 32 are respectively connected to the air inlet P11 and the exhaust hole R12, and the middle valve channel 21 of the inner nest 2 is connected to the air outlet 13.
[0020] As a further arrangement of the above scheme, an air flow channel is drilled on the valve body 1, and a plug is provided at the end of the air flow channel to close it. The air flow channel includes an intake air flow channel 111 connected to the air inlet hole P11 and an exhaust air flow channel 121 connected to the exhaust hole R12. The other ends of the intake air flow channel 111 and the exhaust air flow channel 121 are both connected to the pilot valve 8 and then connected to the top air hole 101.
[0021] As a further arrangement of the above scheme, the air inlet hole P11 is connected to the valve groove 20 corresponding to the lower membrane flap 32. Driven by the valve stem 3, the lower membrane flap 32 forms a connection or closed switching between the valve groove 20 corresponding to the lower membrane flap 32 and the middle valve channel 21 and the radial air hole 102.
[0022] As a further configuration of the above solution, the upper valve disc 31 is also equipped with a sealing ring 33 , and the bottom of the valve cavity 10 is provided with an annular embedded edge 14 that cooperates with the inner nest 2 to clamp the upper valve disc 31 and the sealing ring 33 .
[0023] As a further setting of the above scheme, the rear cover 4 is used to be fixed to the end of the inner nest 2, and is provided with a ring ridge 41 to clamp the lower membrane petal 32. The rear cover 4 is equipped with an external retaining spring 42. The outer ring of the inner nest 2 is provided with a sealing groove 29, and a sealing ring 28 is provided in the sealing groove 29. It is worth noting that there are three sealing grooves 29 and sealing rings 28 in this embodiment, such as Figures 2-4 As shown, in this embodiment, the various internal components are quickly and conveniently installed through the external retaining spring 42. Through the assembly method of the single external retaining spring 42, the installation gap of the valve body 1 is reduced, and its assembly structure is more scientific and reasonable.
[0024] The integrated solenoid valve of this embodiment is as follows Figures 1-3 13, and the like. The valve body 1 shown includes a valve body 1 with a valve cavity 10. The valve body 1 of this embodiment is drilled with an air inlet P11, an exhaust hole R12 and an air outlet 13, wherein a pilot valve 8 is also installed on the valve body 1, and the valve cavity 10 is provided with a top air hole 101, a radial air hole 102 connected to the air outlet 13, and a mounting port 103 at the bottom. A number of air flow channels are also drilled in the valve body 1, and the air flow channels are mainly divided into two. A plug is provided at the end of the drilled hole for sealing, so that the two air flow channels are configured as: an air inlet channel 111 connected to the air inlet P11 and an exhaust channel 121 connected to the exhaust hole R12. The other ends of the air inlet channel 111 and the exhaust channel 121 are connected to the pilot valve 8 and then connected to the top air hole 101. It is worth noting that the pilot valve 8 of this embodiment can be switched on and off between the air inlet channel 111 and the exhaust channel 121. Further, as shown in FIG. Figure 2 The valve chamber 10 of the present embodiment shown is provided with an inner nest 2, a valve stem 3 and a rear cover 4, and valve grooves 20 are provided at both ends of the inner nest 2. The valve stem 3 passes through the inner nest 2 and is respectively provided with an upper valve flap 31 and a lower membrane flap 32 in the valve grooves 20 at both ends. The valve grooves 20 corresponding to the upper valve flap 31 and the lower membrane flap 32 are respectively connected to the air inlet P11 and the exhaust hole R12. The middle valve channel 21 of the inner nest 2 is connected to the air outlet 13. The rear cover 4 is used to be fixed to the end of the inner nest 2, and is provided with a ring ridge 41 for clamping the lower membrane flap 32. The rear cover 4 is cooperated with an external retaining spring 42. The outer ring of the inner nest 2 is provided with a sealing groove 29, and a sealing ring 28 is provided in the sealing groove 29.
[0025] The basic principle of the integrated electromagnetic valve of the embodiment: air flow is introduced from the air inlet hole P11, when the pilot valve 8 opens the air inlet passage 111 channel, the exhaust passage 121 is closed (the opposite action of the two pilot valves 8 realizes the left-right molecular sieve switching, and the prior art is not explained in detail), at this time, the lower diaphragm 32 blocks the air flow from the air inlet passage 111, passes through the pilot valve 8 from the top air hole 101 of the valve cavity 10, forms pressure on the upper valve 31, pushes the upper valve 31 to move downward, opens the passage of the air inlet hole P11 and the radial air hole 102, and the air flow flows out smoothly; in the above state, when the pilot valve 8 is controlled to switch, the air inlet passage 111 channel switches to the exhaust passage 121, the air inlet passage 111 channel is closed, at this time, the air flow that pushes the upper valve 31 to move downward is no longer pressed, and the air pressure at the radial air hole 102 is greater than the air pressure of the upper valve 31 moving downward, so that the upper valve 31 is driven to move upward, and the valve rod 3 and the lower diaphragm 32 are synchronously lifted, so as to close the flow passage of the radial air hole 102 of the air inlet hole P11.
[0026] The integrated electromagnetic valve of the embodiment can be disassembled from the valve body 1 from the top by a screw as shown in the figure when being installed, then, the outer snap spring 42 is disassembled, and the rear cover 4, the inner nest 2, the valve rod 3, the upper valve 31, the lower diaphragm 32 and the sealing ring 33 in the inside can be quickly disassembled, which not only has a simple structure, but also has an integrated structure design of the valve body 1, compared with the split design of the valve body 1, the valve seat and the air pipe connection of the prior art, the pilot valve 8 of the embodiment is directly connected with the valve body 1 to complete assembly, the gap problem of the sealing parts of multiple assembly components is reduced, the air tightness of the whole assembly is improved, and the use performance is improved. Figure 2
[0027] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the utility model claims and equivalent technologies, the utility model also intends to include these modifications and variations.
Claims
1. An integrated electromagnetic valve structure for an oxygen generator, comprising a valve body (1) with a valve cavity (10), the valve body (1) being provided with an air inlet hole P (11), an air outlet hole R (12) and an air outlet hole (13), and a pilot valve (8) being installed on the valve body (1), characterized in that: The valve cavity (10) is provided with an inner nest (2), a valve rod (3) and a rear cover (4), the inner nest (2) is fixedly arranged in the valve cavity (10) circumferentially, the valve cavity (10) is provided with a top air hole (101), a radial air hole (102) connected with the air outlet hole (13) and a bottom mounting hole (103), the inner nest (2) is provided with a valve groove (20) at both ends, the valve rod (3) penetrates the inner nest (2) and is provided with an upper valve flap (31) and a lower membrane flap (32) in the valve groove (20) at both ends respectively, the upper valve flap (31) and the lower membrane flap (32) are connected with the air inlet hole P (11) and the exhaust hole R (12) respectively, and the middle valve channel (21) of the inner nest (2) is connected with the air outlet hole (13).
2. The structure of an integrated electromagnetic valve for an oxygen generator according to claim 1, characterized in that: The valve body (1) is provided with an air flow channel, the end of the air flow channel is provided with a plug for closing, the air flow channel includes an air inlet flow channel (111) connected with the air inlet hole P (11) and an air outlet flow channel (121) connected with the exhaust hole R (12), and the other end of the air inlet flow channel (111) and the air outlet flow channel (121) is connected with the pilot valve (8) and then connected with the top air hole (101).
3. The structure of an integrated electromagnetic valve for an oxygen generator according to claim 1, characterized in that: The air inlet hole P (11) is connected with the valve groove (20) corresponding to the lower membrane flap (32), and the lower membrane flap (32) is driven by the valve rod (3) to switch the connection or closure of the valve groove (20) corresponding to the lower membrane flap (32), the middle valve channel (21) and the radial air hole (102).
4. The structure of an integrated electromagnetic valve for an oxygen generator according to claim 1, characterized in that: The upper valve flap (31) is also provided with a sealing ring (33), and the bottom of the valve cavity (10) is provided with an annular embedded rib (14) to clamp the upper valve flap (31) and the sealing ring (33) in cooperation with the inner nest (2).
5. The structure of an integrated electromagnetic valve for an oxygen generator according to claim 1, characterized in that: The rear cover (4) is used for fixing the end of the inner nest (2), and is provided with a ring rib (41) for clamping the lower membrane flap (32), the rear cover (4) is provided with an outer snap spring (42) in cooperation, the outer ring of the inner nest (2) is provided with a sealing groove (29), and the sealing groove (29) is provided with a sealing ring (28).