Three-way component for molecular sieve oxygen generator

Abstract

The utility model discloses a three -way subassembly for molecular sieve oxygen generator, including a central pipeline and two bypass pipelines, two bypass pipelines inside respectively are equipped with check valve, and bypass pipeline includes transverse bypass pipeline and longitudinal bypass pipeline, is equipped with transverse main bypass through -hole in transverse bypass pipeline, is equipped with longitudinal main bypass through -hole in longitudinal bypass pipeline, and longitudinal bypass pipeline is close to the position of outer circumferential edge and is equipped with with longitudinal main bypass through -hole isolation's multiple longitudinal back flushing through -hole, is equipped with with transverse main bypass through -hole isolation's bypass back flushing through -hole in transverse bypass pipeline, is equipped with with main center through -hole isolation's center back flushing through -hole in central pipeline, and the both ends of center back flushing through -hole are communicated with respectively in two bypass pipelines bypass back flushing through -hole connection. The utility model forms the independent back flushing through -hole between two bypass pipelines, can realize the purpose of back flushing nitrogen -removing of molecular sieve cylinder through multiple back flushing through -holes to improve nitrogen -removing effect and oxygen -making efficiency.

Description

Technical Field

[0001] This utility model relates to a partial component for a molecular sieve oxygen generator, and more particularly to a three-way component for a molecular sieve oxygen generator. Background Technology

[0002] In the field of airborne equipment, molecular sieve oxygen generators are commonly used to provide oxygen to flight crews. A molecular sieve oxygen generator is an oxygen production device that separates and produces oxygen by adsorbing non-oxygen components (mainly nitrogen and carbon dioxide) in the air through molecular sieves. Commonly used molecular sieve oxygen generators include two molecular sieve cylinders integrated on a base, a gas storage tank, an air compressor, and other related components. The two molecular sieve cylinders alternately perform oxygen production and nitrogen removal processes.

[0003] To deliver oxygen generated by the molecular sieve cylinders into the storage tank, and to deliver a portion of the oxygen from one molecular sieve cylinder into another for backflushing and nitrogen removal, a three-way assembly is installed at the same end of both molecular sieve cylinders and the storage tank. This three-way assembly includes a central pipe and two bypass pipes. One end of each bypass pipe is connected to both sides of the central pipe, and the two bypass pipes are interconnected. The other end of each bypass pipe is connected to one end of each of the two molecular sieve cylinders. One end of the central pipe is connected to the inlet of the storage tank. Each bypass pipe is equipped with a one-way valve, and a backflushing channel is located around the one-way valve in the bypass pipe. In use, one molecular sieve cylinder generates oxygen while the other expels nitrogen. Most of the oxygen produced by the oxygen-generating molecular sieve cylinder enters the gas storage tank through the one-way valve and central pipe in the corresponding bypass pipe. At the same time, a small portion of the oxygen produced by the oxygen-generating molecular sieve cylinder enters the nitrogen-expelling molecular sieve cylinder through the backflush channel in the corresponding bypass pipe to backflush out the nitrogen (including gases such as carbon dioxide) adsorbed on the molecular sieve in the nitrogen-expelling molecular sieve cylinder. After completing one process, the processes of the two molecular sieve cylinders are interchanged, and the working principle is similar.

[0004] Traditional three-way components used in molecular sieve oxygen generators have the following drawbacks: During the nitrogen purging process, the oxygen used for backflushing nitrogen into the molecular sieve cylinder enters from the center of one end of the molecular sieve and exits from the other end. This method is not ideal for nitrogen purging and will reduce oxygen production efficiency. In addition, the one-way valve in the bypass pipe of the traditional three-way component adopts a simple structure of compression spring + sealing gasket, which is prone to jamming during use, causing blockage of the oxygen passage and reducing oxygen production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a three-way component for a molecular sieve oxygen generator that can improve the backflushing nitrogen removal effect in order to solve the above problems.

[0006] This utility model achieves the above objectives through the following technical solutions: A three-way assembly for a molecular sieve oxygen generator includes a central pipe and two bypass pipes. The central pipe has a main central through-hole, and the bypass pipes have main bypass through-holes. One end of each of the two bypass pipes is connected to both sides of the central pipe, and the two bypass pipes are interconnected. A one-way valve is installed in each of the two bypass pipes. Each bypass pipe includes a transverse bypass pipe and a longitudinal bypass pipe perpendicular to each other in the centerline direction. The transverse bypass pipe has a transverse main bypass through-hole, and the longitudinal bypass pipe has a longitudinal main bypass through-hole. The transverse main bypass through-hole and the longitudinal main bypass through-hole are interconnected to form the main bypass through-hole. The transverse bypass pipe has one end connected to one side of the central pipe, and the other end connected to one end of the longitudinal bypass pipe. The longitudinal bypass pipe has multiple longitudinal backflush holes that are evenly distributed along the circumference and longitudinally connected, and isolated from the longitudinal main bypass hole, near its outer peripheral edge. The transverse bypass pipe has a bypass backflush hole that is isolated from the transverse main bypass hole and connected to the corresponding multiple longitudinal backflush holes. The central pipe has a central backflush hole that is isolated from the main central hole. The bypass backflush holes of the two bypass pipes are respectively connected to both ends of the central backflush hole.

[0007] Preferably, in order to achieve better backflushing effect and facilitate processing, there are four longitudinal backflushing through holes, which are respectively located in the longitudinal bypass pipe near the four transverse corners. Each of the bypass backflushing through holes in the transverse bypass pipe is formed by multiple interconnected strip-shaped through holes.

[0008] Preferably, to minimize the risk of jamming in the one-way valve and to facilitate processing and assembly, the longitudinal bypass pipe includes an upper cover and a lower cover connected to each other. The upper cover is connected to the corresponding transverse bypass pipe. The upper cover has multiple upper longitudinal main through holes and multiple upper longitudinal backflush through holes near its edge. The lower cover has a lower longitudinal central main through hole at its center. The lower cover has multiple lower longitudinal bypass main countersunk holes and multiple lower longitudinal backflush through holes near its edge. A valve passage is provided between the multiple lower longitudinal bypass main countersunk holes and the lower longitudinal central main through hole. The one-way valve includes a return spring, an elastic diaphragm, and a retaining ring. The lower cover has a central part near its lower longitudinal central main through hole. An upwardly protruding ring is formed. The disc-shaped elastic diaphragm is located between the protruding ring and the upper cover and corresponds to the valve channel. The reset spring is located between the elastic diaphragm and the upper cover, with one end of the reset spring contacting the middle of the elastic diaphragm. The retaining ring is located between the elastic diaphragm and the lower cover and is placed in an annular groove on the elastic diaphragm near the circumferential edge. The multiple upper longitudinal main through holes, multiple lower longitudinal main counterbore holes, lower longitudinal central main through holes, and the valve channel of each longitudinal bypass pipe constitute the longitudinal main bypass through hole. The multiple upper longitudinal backflush through holes and the multiple lower longitudinal backflush through holes that correspond to each other are interconnected to form multiple longitudinal backflush through holes.

[0009] Preferably, in order to facilitate processing and assembly and reduce the space occupied by the entire component, the four upper longitudinal back-blowing through holes are respectively provided on the four upper lugs protruding on the outer peripheral edge of the upper cover, and the four lower longitudinal back-blowing through holes are respectively provided on the four lower lugs protruding on the outer peripheral edge of the lower cover.

[0010] Preferably, in order to achieve a better sealing effect, O-rings are provided between the upper cover and the corresponding transverse bypass pipe, and between the upper cover and the corresponding lower cover.

[0011] The beneficial effects of this utility model are as follows: This invention features multiple longitudinal backflush holes isolated from the longitudinal main bypass hole in the longitudinal bypass pipe, and bypass backflush holes isolated from the transverse main bypass hole and connected to the corresponding multiple longitudinal backflush holes in the transverse bypass pipe. A central backflush hole isolated from the main central hole is provided in the central pipe. The bypass backflush holes of the two bypass pipes are connected through the central backflush hole, thus forming an independent backflush hole between the two bypass pipes. After being connected to the corresponding two molecular sieve cylinders, it enables backflush nitrogen removal from the molecular sieve cylinders requiring nitrogen removal through multiple circumferentially distributed backflush holes, thereby improving nitrogen removal efficiency and oxygen production efficiency. Furthermore, by installing a one-way valve based on an elastic diaphragm in the longitudinal bypass pipe, a more reliable on / off control function is achieved using the spring force of the reset spring and the elastic force of the diaphragm itself, avoiding the drawbacks of traditional one-way valves being prone to jamming and improving oxygen production efficiency. Attached Figure Description

[0012] Figure 1 This is a top-view, three-dimensional, exploded view of the three-way component of the molecular sieve oxygen generator before assembly, as described in this utility model. Figure 2 This is a top-view three-dimensional structural diagram of the three-way assembly for the molecular sieve oxygen generator described in this utility model after assembly; Figure 3 This is a bottom-view three-dimensional structural diagram of the three-way component for the molecular sieve oxygen generator described in this utility model after assembly; Figure 4 This is a schematic diagram of the front cross-sectional structure of the three-way component for the molecular sieve oxygen generator described in this utility model after assembly. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-4As shown, the three-way assembly for a molecular sieve oxygen generator of this utility model includes a central pipe 10 and two bypass pipes (see below for specific structure). The central pipe 10 has a main central through hole 8, and the bypass pipes have main bypass through holes (see below for specific structure). One end of each of the two bypass pipes is connected to both sides of the central pipe 10, and the two bypass pipes are interconnected. One-way valves are installed in each of the two bypass pipes (see below for specific structure). The bypass pipes include a transverse bypass pipe 1 and a longitudinal bypass pipe that are perpendicular to each other in the direction of their center lines (see below for specific structure). The transverse bypass pipe 1 has a transverse main bypass through hole 13, and the longitudinal bypass pipe has a longitudinal main bypass through hole (see below for specific structure). The transverse main bypass through-hole 13 and the longitudinal main bypass through-hole are interconnected to form the main bypass through-hole. One end of the transverse bypass pipe 1 is connected to one side of the central pipe 10, and the other end of the transverse bypass pipe 1 is connected to one end of the longitudinal bypass pipe. The longitudinal bypass pipe is provided with a plurality of longitudinal backflush through-holes that are evenly distributed along the circumference and longitudinally connected and isolated from the longitudinal main bypass through-hole near the outer peripheral edge (see the following for specific structure). The transverse bypass pipe 1 is provided with a bypass backflush through-hole 12 that is isolated from the transverse main bypass through-hole 13 and connected to the corresponding plurality of longitudinal backflush through-holes. The central pipe 10 is provided with a central backflush through-hole 7 that is isolated from the main central through-hole 8. The bypass backflush through-holes 12 of the two bypass pipes are respectively connected to both ends of the central backflush through-hole 7.

[0014] like Figures 1-4 As shown, this utility model also discloses the following more optimized specific structures: To achieve better backflushing effect and facilitate processing, there are four longitudinal backflushing through holes, which are respectively located in the longitudinal bypass pipe near the four transverse corners. The bypass backflushing through hole 12 in each transverse bypass pipe 1 is formed by multiple strip-shaped through holes connected to each other.

[0015] To minimize the risk of jamming in the one-way valve and to facilitate processing and assembly, the longitudinal bypass pipe includes an upper cover 4 and a lower cover 17 connected to each other. The upper cover 4 is connected to the corresponding transverse bypass pipe 1. The upper cover 4 has multiple upper longitudinal main through holes 3 and multiple upper longitudinal backflush through holes 6 near its edge. The lower cover 17 has a lower longitudinal central main through hole 21 at its center. The lower cover 17 also has multiple lower longitudinal bypass main countersunk holes 20 and multiple lower longitudinal backflush through holes 19 near its edge. A valve passage 23 connects the multiple lower longitudinal bypass main countersunk holes 20 and the lower longitudinal central main through hole 21. The one-way valve includes a reset spring 14, an elastic diaphragm 15, and a retaining ring 16. The middle part of the lower cover 17 protrudes upwards near its lower longitudinal central main through hole 21 to form a raised ring. 22. A disc-shaped elastic diaphragm 15 is located between the convex ring 22 and the upper cover 4 and corresponds to the valve channel 23. The elastic diaphragm 15 and the convex ring 22 cooperate to form a diaphragm valve, which is equivalent to the valve core of a one-way valve. The reset spring 14 is located between the elastic diaphragm 15 and the upper cover 4, and one end of the reset spring 14 contacts the middle of the elastic diaphragm 15. The retaining ring 16 is located between the elastic diaphragm 15 and the lower cover 17, and the retaining ring 16 is placed in the annular groove on the elastic diaphragm 15 near the circumferential edge. The multiple upper longitudinal main through holes 3, multiple lower longitudinal bypass main counterbore holes 20, lower longitudinal central main through holes 21 and valve channel 23 of each longitudinal bypass pipe constitute the longitudinal main bypass through holes. The multiple upper longitudinal backflush through holes 6 and multiple lower longitudinal backflush through holes 19 that correspond to each other are interconnected to form multiple longitudinal backflush through holes.

[0016] To facilitate processing and assembly and reduce the space occupied by the entire component, four upper longitudinal back-blowing through holes 6 are respectively provided on the four upper lugs 5 protruding from the outer peripheral edge of the upper cover 4, and four lower longitudinal back-blowing through holes 19 are respectively provided on the four lower lugs 18 protruding from the outer peripheral edge of the lower cover 17.

[0017] To achieve a better sealing effect, O-rings 2 are provided between the upper cover 4 and the corresponding transverse bypass pipe 1, and between the upper cover 4 and the corresponding lower cover 17.

[0018] Figure 1 The image also shows an annular sealing gasket 9 located between the central pipe 10 and the transverse bypass pipe 1, and a flow regulating valve core 11 installed in the bypass backflush orifice 12, both of which are conventional adaptable structures.

[0019] like Figures 1-4As shown, in application, this three-way assembly, along with two molecular sieve cylinders (not shown in the figure) and a gas storage tank (not shown in the figure), together with other related components, constitutes a molecular sieve oxygen generator. One end of each of the two vertical bypass pipes is connected to one end of a molecular sieve cylinder, and one end of the central pipe 10 is connected to the inlet of the gas storage tank. During operation, one molecular sieve cylinder generates oxygen while the other discharges nitrogen. Most of the oxygen generated by the oxygen-generating molecular sieve cylinder enters the gas storage tank through the longitudinal main bypass port, the transverse main bypass port 13, and the main central port 8. During this process, the oxygen pressure pushes the center of the elastic diaphragm 15 away from the convex ring 22. Oxygen enters the valve channel 23 from the lower longitudinal central main port 21, and then enters the transverse main bypass port 13 through multiple lower longitudinal bypass main countersunk holes 20 and multiple upper longitudinal main ports 3. The one-way valve is in the open state. Simultaneously, the oxygen-generating... A small portion of the oxygen generated by the sub-sieve cylinder enters the central backflush hole 7 through multiple longitudinal backflush holes and corresponding bypass backflush holes 12 in the corresponding bypass pipe, and then enters the nitrogen-removing molecular sieve cylinder through another bypass pipe's bypass backflush hole 12 and multiple longitudinal backflush holes. This allows for circumferential multi-position backflush removal of nitrogen (including gases such as carbon dioxide) adsorbed on the molecular sieve in the molecular sieve cylinder. The backflush airflow is evenly distributed, resulting in better nitrogen removal. After completing one process, the processes of the two molecular sieve cylinders are interchanged, and the working principle is similar.

[0020] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A three-way assembly for a molecular sieve oxygen generator, comprising a central pipe and two bypass pipes, wherein the central pipe has a main central through hole, and the bypass pipes have main bypass through holes; one end of each of the two bypass pipes is respectively connected to both sides of the central pipe and the two bypass pipes are interconnected; and one-way valves are respectively installed in each of the two bypass pipes, characterized in that: The bypass pipe includes a transverse bypass pipe and a longitudinal bypass pipe perpendicular to each other in the centerline direction. The transverse bypass pipe has a transverse main bypass through hole, and the longitudinal bypass pipe has a longitudinal main bypass through hole. The transverse main bypass through hole and the longitudinal main bypass through hole are interconnected to form the main bypass through hole. One end of the transverse bypass pipe is connected to one side of the central pipe, and the other end of the transverse bypass pipe is connected to one end of the longitudinal bypass pipe. The longitudinal bypass pipe has a plurality of longitudinal backflush through holes that are evenly distributed along the circumference and longitudinally connected and isolated from the longitudinal main bypass through hole near the outer peripheral edge. The transverse bypass pipe has a bypass backflush through hole that is isolated from the transverse main bypass through hole and connected to the corresponding plurality of longitudinal backflush through holes. The central pipe has a central backflush through hole that is isolated from the main central through hole. The bypass backflush through holes of the two bypass pipes are respectively connected to both ends of the central backflush through hole.

2. The three-way assembly for a molecular sieve oxygen generator according to claim 1, characterized in that: There are four longitudinal backflush through holes, which are respectively located in the longitudinal bypass pipe near the four transverse corners. Each of the transverse bypass pipes has a bypass backflush through hole formed by multiple interconnected strip-shaped through holes.

3. The three-way assembly for a molecular sieve oxygen generator according to claim 1 or 2, characterized in that: The longitudinal bypass pipe includes an upper cover and a lower cover connected to each other. The upper cover is connected to the corresponding transverse bypass pipe. The upper cover has multiple upper longitudinal main through holes and multiple upper longitudinal backflush through holes near its edge. The lower cover has a lower longitudinal central main through hole at its center. The lower cover has multiple lower longitudinal bypass main countersunk holes and multiple lower longitudinal backflush through holes near its edge. A valve passage is provided between the multiple lower longitudinal bypass main countersunk holes and the lower longitudinal central main through hole. The one-way valve includes a return spring, an elastic diaphragm, and a retaining ring. A raised ring is formed by an upward protrusion in the middle of the lower cover near its lower longitudinal central main through hole. The disc-shaped... The elastic diaphragm is located between the convex ring and the upper cover and corresponds to the valve channel. The reset spring is located between the elastic diaphragm and the upper cover, with one end of the reset spring contacting the middle of the elastic diaphragm. The retaining ring is located between the elastic diaphragm and the lower cover and is placed in an annular groove on the elastic diaphragm near the circumferential edge. The multiple upper longitudinal main through holes, multiple lower longitudinal main counterbore holes, lower longitudinal central main through holes, and the valve channel of each longitudinal bypass pipe constitute the longitudinal main bypass through hole. The multiple upper longitudinal backflush through holes and the multiple lower longitudinal backflush through holes that correspond to each other are interconnected to form multiple longitudinal backflush through holes.

4. The three-way assembly for a molecular sieve oxygen generator according to claim 3, characterized in that: The four upper longitudinal back-blowing through holes are respectively provided on the four upper protruding ears on the outer peripheral edge of the upper cover, and the four lower longitudinal back-blowing through holes are respectively provided on the four lower protruding ears on the outer peripheral edge of the lower cover.

5. The three-way assembly for a molecular sieve oxygen generator according to claim 3, characterized in that: O-rings are provided between the upper cover and the corresponding transverse bypass pipe, and between the upper cover and the corresponding lower cover.

Images