CN112943975A - Electric reversing control valve for oxygen generation and control method - Google Patents
Electric reversing control valve for oxygen generation and control method Download PDFInfo
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- CN112943975A CN112943975A CN202110129283.XA CN202110129283A CN112943975A CN 112943975 A CN112943975 A CN 112943975A CN 202110129283 A CN202110129283 A CN 202110129283A CN 112943975 A CN112943975 A CN 112943975A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/0655—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with flat slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses an electric reversing control valve for oxygen production and a control method, wherein the electric reversing control valve for oxygen production comprises a valve seat, a sealing mechanism and a gear driving mechanism, wherein the valve seat is divided into four sealing cavities, wherein two cavities are common, a vacuum cavity and a pressure cavity; the driven wheel component of the gear driving mechanism is driven by the driving wheel to rotate in opposite directions, so that the rack of the sealing mechanism is driven to linearly move in opposite directions. The sealing seat of the sealing mechanism is connected with the rack, and the pressure cavity/the vacuum cavity is communicated with different public cavities along with the linear motion of the rack in different directions, so that the working state of the control valve is switched, and the vacuum and the pressure are output in an exchange mode.
Description
Technical Field
The invention relates to the technical field of oxygen generation equipment, in particular to an electric reversing control valve for oxygen generation and a control method.
Background
Molecular sieve oxygen production refers to separation and production of oxygen from air at normal temperature by utilizing the adsorption characteristics of molecular sieves, in the process, air is generally required to be alternately conveyed to an adsorption tower and vacuum is required to be extracted, and the conversion operation is required to be realized through a control valve. In the prior art, a plurality of two-way control valves are combined for use, and a PLC control program is used for controlling the valve to act, so that the structure is complex and the control is complicated.
Disclosure of Invention
The invention aims to provide an electric reversing control valve for oxygen generation, which not only can quickly and stably realize reversing, but also has a simple structure and is easy to operate.
In addition, the invention also provides a control valve method of the electric reversing control valve.
The invention is realized by the following technical scheme:
the electric reversing control valve for oxygen production comprises a valve body, a sealing mechanism and a gear driving mechanism;
the valve body is internally provided with a first common cavity, a second common cavity, a vacuum cavity and a pressure cavity, the vacuum cavity is communicated with the first common cavity and the second common cavity through a first communicating port and a second communicating port respectively, the pressure cavity is communicated with the first common cavity and the second common cavity through a third communicating port and a fourth communicating port respectively, the first common cavity is provided with a gas inlet and outlet port, the second common cavity is provided with an adsorption tower connecting port, the vacuum cavity is provided with a fan inlet connecting port, and the pressure cavity is provided with a fan outlet connecting port;
the sealing mechanism comprises a sealing seat, a guide rail and a rack, the sealing seat is installed on the rack, the rack is driven by a gear driving mechanism to realize linear transmission, the rack is arranged in the guide rail in a sliding mode, the racks in the vacuum cavity and the pressure cavity are driven by the gear driving mechanism to move in opposite directions, the vacuum cavity is communicated with the first public cavity or the vacuum cavity is communicated with the second public cavity through linear motion of the sealing seat, and the pressure cavity is communicated with the first public cavity or the pressure cavity is communicated with the second public cavity through linear motion of the sealing seat. Namely:
sealing mechanisms are arranged in the vacuum cavity and the pressure cavity, a sealing seat in the vacuum cavity is used for sealing a first communicating port or a second communicating port, the vacuum cavity is communicated with a first public cavity or the vacuum cavity is communicated with a second public cavity by switching the sealing between the sealing seat and the first communicating port or the second communicating port, and a sealing seat in the pressure cavity) is used for sealing a third communicating port or a fourth communicating port, and the pressure cavity is communicated with the first public cavity or the pressure cavity is communicated with the second public cavity by switching the sealing between the sealing seat and the third communicating port or the fourth communicating port.
The working principle of the invention is as follows:
the gear driving mechanism drives the racks respectively arranged in the vacuum cavity and the pressure cavity to do linear motion in opposite directions, so as to drive the sealing seat to do linear motion in opposite directions, and the reversing switching of the valve is realized by switching the forward and reverse rotation of the gear driving mechanism.
The valve can be quickly and stably reversed by adopting the sealing mechanism and the gear driving mechanism, and the gear driving mechanism is directly controlled by utilizing a PLC control program.
Furthermore, the first common cavity and the second common cavity are symmetrically arranged, the vacuum cavity and the pressure cavity are arranged between the first common cavity and the second common cavity in parallel, two ends of the vacuum cavity are communicated with the first common cavity and the second common cavity through a first communicating port and a second communicating port respectively, and two ends of the pressure cavity are communicated with the first common cavity and the second common cavity through a third communicating port and a fourth communicating port respectively.
Furthermore, the bottom of vacuum cavity and pressure chamber is provided with first installation cavity and second installation cavity respectively, the length of first installation cavity and second installation cavity is greater than the length of vacuum cavity and pressure chamber respectively, first installation cavity and second installation cavity are used for installing rail and rack.
Namely, the parts of the first mounting cavity and the second mounting cavity, which protrude out of the vacuum cavity and the pressure cavity, are respectively arranged below the first common cavity and the second common cavity
The design is that the sealing seat can be arranged in the middle of the rack, and because the longer rack accommodating cavity needs to be designed to realize the matching of the sealing seat and the communicating port, the first mounting cavity and the second mounting cavity designed by the invention can realize the matching of one sealing seat and the communicating ports at two ends respectively through one rack.
According to the invention, the arrangement of the first mounting cavity and the second mounting cavity can realize that one sealing seat can be respectively matched with the communicating holes at two ends by one rack, and the structure is further simplified.
Further, the bottom of seal receptacle is provided with the installation piece, the installation piece is connected with the rack, the bottom of vacuum cavity and pressure chamber all is provided with the strip groove with installation piece complex.
Further, a sealing ring is arranged on the side wall of the sealing seat.
The sealing seat is preferably a circular plate, the sealing ring is preferably an o-shaped ring, and the side wall of the sealing seat particularly refers to the side where the side wall of the sealing seat is matched with the communication hole.
Further, the gear driving mechanism comprises a driving wheel, a driven wheel assembly and a motor;
the driving wheel is connected with the motor through a key, the driven wheel component comprises an upper driven wheel and a lower driven wheel, the upper driven wheel and the lower driven wheel are connected through a connecting shaft, and the upper driven wheel and the lower driven wheel are respectively meshed with the driving wheel and the rack.
Furthermore, the driving wheel and the motor are respectively provided with one, the number of the driven wheel assemblies is two, the two driven wheel assemblies are symmetrically arranged along the central plane of the driving wheel, and when the motor rotates, the driven wheel assemblies drive racks arranged in the vacuum cavity and the pressure cavity to move in opposite directions.
The invention has simple and compact structure through the whole structural design of the valve, and can realize the switching of two different working states through one motor, one driving wheel and two driven wheel components, thereby realizing the switching of the working states of the control valve and exchanging and outputting vacuum and pressure.
Furthermore, a position detection sensor is installed on the sealing seat and electrically connected with a controller used for driving the gear driving mechanism, and the position detection sensor is used for controlling the motor to start and stop so as to control the position precision of the sealing seat.
Further, the gas inlet and outlet, the adsorption tower connecting port, the fan inlet connecting port and the fan outlet connecting port are respectively arranged on the side walls of the first common cavity, the second common cavity, the vacuum cavity and the pressure cavity.
Based on the control method of the electric reversing control valve for oxygen generation, the position of the sealing seat is controlled by the gear driving mechanism to realize the switching of two working states:
the first working state: the gear driving mechanism drives the sealing seat in the vacuum cavity to be sealed with the second communication port, so that the vacuum cavity is communicated with the first common cavity and the vacuum cavity is closed with the second common cavity;
the second working state: the gear driving mechanism drives the sealing seat in the vacuum cavity to be sealed with the first communicating port, the vacuum cavity is closed with the first public cavity and communicated with the second public cavity, the sealing seat fourth communicating port in the gear driving mechanism driving pressure cavity is sealed, the pressure cavity is closed with the second public cavity, the pressure cavity is communicated with the first public cavity, at the moment, the vacuum cavity and the pressure cavity are communicated through the fan to form an air path passage, and gas is discharged from the adsorption tower under the action of the fan.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the valve can be quickly and stably reversed by adopting the sealing mechanism and the gear driving mechanism, and the gear driving mechanism is directly controlled by utilizing a PLC control program.
2. The invention has simple and compact structure through the whole structural design of the valve, and can realize the switching of two different working states only through one motor, one driving wheel and two driven wheel components, thereby realizing the switching of the working states of the control valve and exchanging and outputting vacuum and pressure.
3. The gear rack transmission of the invention has high transmission precision, large bearing capacity and high transmission speed, can ensure that the control valve is accurately controlled and the reversing is rapid and stable.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic overall structure diagram of an electrically operated directional control valve;
FIG. 2 is a partial cross-sectional view of the electrically operated directional control valve;
FIG. 3 is a cross-sectional view of the electrically operated directional control valve;
FIG. 4 is a schematic sectional view of the inner cavity of the valve body;
FIG. 5 is a schematic cross-sectional view of the electrically operated directional control valve in the first operating state
Fig. 6 is a schematic sectional structure view of the electric reversing control valve in a second working state.
Reference numbers and corresponding part names in the drawings:
10-a valve body; 11-a sealing mechanism; 12-a gear drive mechanism; 101-gas inlet and outlet; 102-adsorption column connection port; 103-a fan inlet connector; 104-a fan outlet connector; 105-a first common cavity; 106-a second common cavity; 107-vacuum chamber; 108-a pressure chamber; 109-a first mounting cavity; 110-a second mounting cavity; 111-a sealing seat; 112-a sealing ring; 113-a guide rail; 114-a rack; 115-position detection sensor; 121-a driving wheel; 122 — a driven wheel assembly; 123-motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1:
as shown in fig. 1-6, the electric reversing control valve for oxygen generation comprises a valve body 10, a sealing mechanism 11 and a gear driving mechanism 12;
a first common cavity 105, a second common cavity 106, a vacuum cavity 107 and a pressure cavity 108 are arranged in the valve body 10, the vacuum cavity 107 is respectively communicated with the first common cavity 105 and the second common cavity 106 through a first communicating port and a second communicating port, the pressure cavity 108 is respectively communicated with the first common cavity 105 and the second common cavity 106 through a third communicating port and a fourth communicating port, a gas inlet and outlet 101 is arranged on the first common cavity 105, an adsorption tower connecting port 102 is arranged on the second common cavity 106, a fan inlet connecting port 103 is arranged on the vacuum cavity 107, and a fan outlet connecting port 104 is arranged on the pressure cavity 108;
the sealing mechanism 11 comprises a sealing seat 111, a guide rail 113 and a rack 114, the sealing seat 111 is mounted on the rack 114, the rack 114 is driven by the gear driving mechanism 12 to realize linear transmission, the rack 114 is slidably arranged in the guide rail 113, the rack 114 arranged in the vacuum chamber 107 and the pressure chamber 108 moves in opposite directions under the drive of the gear driving mechanism 12, the vacuum chamber 107 is communicated with the first common chamber 105 or the vacuum chamber 107 is communicated with the second common chamber 106 through the linear motion of the sealing seat 111, and the pressure chamber 108 is communicated with the first common chamber 105 or the pressure chamber 108 is communicated with the second common chamber 106 through the linear motion of the sealing seat 111, namely:
the vacuum chamber 107 and the pressure chamber 108 are both provided with a sealing mechanism 11, a sealing seat 111 in the vacuum chamber 107 is used for sealing a first communication port or a second communication port, the vacuum chamber 107 is communicated with the first common chamber 105 or the vacuum chamber 107 is communicated with the second common chamber 106 by switching the sealing between the sealing seat 111 and the first communication port or the second communication port, the sealing seat 111 in the pressure chamber 108 is used for sealing a third communication port or a fourth communication port, and the pressure chamber 108 is communicated with the first common chamber 105 or the pressure chamber 108 is communicated with the second common chamber 106 by switching the sealing between the sealing seat 111 and the third communication port or the fourth communication port.
In the present embodiment, the gear driving mechanism 12 includes a driving wheel 121, a driven wheel assembly 122 and a motor 123;
the driving wheel 121 and the motor 123 are connected through a key, the driven wheel assembly 122 includes an upper driven wheel and a lower driven wheel, the upper driven wheel and the lower driven wheel are connected through a connecting shaft, and the upper driven wheel and the lower driven wheel are respectively engaged with the driving wheel 121 and the rack 114.
In this embodiment, the gas inlet/outlet port 101, the adsorption tower connection port 102, the blower inlet connection port 103, and the blower outlet connection port 104 are provided at side walls of the first common chamber 105, the second common chamber 106, the vacuum chamber 107, and the pressure chamber 108, respectively.
In this embodiment, the motor 123 is disposed on the top of the valve body 10, the driving wheel 121 and the upper driven wheel are disposed on the top of the valve body 10 and the connecting shaft passes through, the lower driven wheel, the rack 114 and the guide rail 113 are disposed on the bottom of the cavity 107 and the pressure chamber 108, and the guide rail 113 is fixed on the bottom of the cavity 107 and the pressure chamber 108 by screws.
In the embodiment, the gear driving mechanism 12 controls the position of the sealing seat 111 to realize the switching between two working states:
the first working state: the gear driving mechanism 12 drives the sealing seat 111 in the vacuum cavity 107 to seal with the second communicating port, so that the vacuum cavity 107 is communicated with the first common cavity 105, the vacuum cavity 107 is closed with the second common cavity 106, the gear driving mechanism 12 drives the sealing seat 111 in the pressure cavity 108 to seal with the third communicating port, so that the pressure cavity 108 is communicated with the second common cavity 106, the pressure cavity 108 is closed with the first common cavity 105, at the moment, the vacuum cavity 107 is communicated with the pressure cavity 108 through the fan to form an air passage, and gas is sucked into the adsorption tower under the action of the fan, as shown in fig. 5;
the second working state: the gear driving mechanism 12 drives the sealing seat 111 in the vacuum cavity 107 to seal with the first communicating port, so that the vacuum cavity 107 and the first common cavity 105 are closed, the vacuum cavity 107 and the second common cavity 106 are communicated, the gear driving mechanism 12 drives the sealing seat 111 in the pressure cavity 108 to seal with the fourth communicating port, so that the pressure cavity 108 and the second common cavity 106 are closed, the pressure cavity 108 is communicated with the first common cavity 105, at the moment, the vacuum cavity and the pressure cavity 107 are communicated through a fan to form a gas path, and gas is discharged from the adsorption tower under the action of the fan, as shown in fig. 6.
Example 2:
as shown in fig. 1 to 6, the present embodiment is based on embodiment 1,
in this embodiment, the first common chamber 105 and the second common chamber 106 are symmetrically arranged, the vacuum chamber 107 and the pressure chamber 108 are arranged in parallel between the first common chamber 105 and the second common chamber 106, two ends of the vacuum chamber 107 are respectively communicated with the first common chamber 105 and the second common chamber 106 through a first communication port and a second communication port, and two ends of the pressure chamber 108 are respectively communicated with the first common chamber 105 and the second common chamber 106 through a third communication port and a fourth communication port; the bottom parts of the vacuum cavity 107 and the pressure cavity 108 are respectively provided with a first mounting cavity 109 and a second mounting cavity 110, the length of the first mounting cavity 109 and the length of the second mounting cavity 110 are respectively greater than that of the vacuum cavity 107 and the pressure cavity 108, and the first mounting cavity 109 and the second mounting cavity 110 are used for mounting a rail 113 and a rack 114; the bottom of the sealing seat 111 is provided with a mounting block, the mounting block is connected with a rack 114, and the bottoms of the vacuum cavity 107 and the pressure cavity 108 are both provided with strip-shaped grooves matched with the mounting block.
One driving wheel 121 and one motor 123 are provided, two driven wheel assemblies 122 are symmetrically arranged along the central plane of the driving wheel 121, and when the motor 123 rotates, the driven wheel assemblies 122 drive the racks 114 arranged in the vacuum chamber 107 and the pressure chamber 108 to move in opposite directions.
Example 3:
as shown in fig. 1 to 6, in this embodiment, based on embodiment 1 or embodiment 2, a sealing ring 112 is disposed on a side wall of the sealing seat 111; a position detection sensor 115 is mounted on the seal holder 111, and the position detection sensor 115 is electrically connected to a controller for driving the gear drive mechanism 12.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The electric reversing control valve for oxygen production is characterized by comprising a valve body (10), a sealing mechanism (11) and a gear driving mechanism (12);
a first common cavity (105), a second common cavity (106), a vacuum cavity (107) and a pressure cavity (108) are arranged in the valve body (10), the vacuum cavity (107) is communicated with the first common cavity (105) and the second common cavity (106) through a first communicating port and a second communicating port respectively, the pressure cavity (108) is communicated with the first common cavity (105) and the second common cavity (106) through a third communicating port and a fourth communicating port respectively, a gas inlet and outlet (101) is arranged on the first common cavity (105), an adsorption tower connecting port (102) is arranged on the second common cavity (106), a fan inlet connecting port (103) is arranged on the vacuum cavity (107), and a fan outlet connecting port (104) is arranged on the pressure cavity (108);
the sealing mechanism (11) comprises a sealing seat (111), a guide rail (113) and a rack (114), the sealing seat (111) is installed on the rack (114), the rack (114) is driven by a gear driving mechanism (12) to realize linear transmission, the rack (114) is arranged in the guide rail (113) in a sliding mode, the rack (114) arranged in the vacuum cavity (107) and the pressure cavity (108) moves in opposite directions under the driving of the gear driving mechanism (12), the vacuum cavity (107) is communicated with the first common cavity (105) or the vacuum cavity (107) is communicated with the second common cavity (106) through the linear motion of the sealing seat (111), and the pressure cavity (108) is communicated with the first common cavity (105) or the pressure cavity (108) is communicated with the second common cavity (106) through the linear motion of the sealing seat (111).
2. The electric reversing control valve for oxygen generation according to claim 1, wherein the first common chamber (105) and the second common chamber (106) are symmetrically arranged, the vacuum chamber (107) and the pressure chamber (108) are arranged in parallel between the first common chamber (105) and the second common chamber (106), two ends of the vacuum chamber (107) are respectively communicated with the first common chamber (105) and the second common chamber (106) through a first communication port and a second communication port, and two ends of the pressure chamber (108) are respectively communicated with the first common chamber (105) and the second common chamber (106) through a third communication port and a fourth communication port.
3. The electric reversing control valve for oxygen generation according to claim 2, wherein the bottom of the vacuum chamber (107) and the pressure chamber (108) are respectively provided with a first installation chamber (109) and a second installation chamber (110), the lengths of the first installation chamber (109) and the second installation chamber (110) are respectively greater than the lengths of the vacuum chamber (107) and the pressure chamber (108), and the first installation chamber (109) and the second installation chamber (110) are used for installing a rail (113) and a rack (114).
4. The electrically operated directional control valve for oxygen generation according to claim 3, wherein the bottom of the sealing seat (111) is provided with a mounting block, the mounting block is connected with the rack (114), and the bottom of the vacuum chamber (107) and the bottom of the pressure chamber (108) are provided with strip-shaped grooves matched with the mounting block.
5. The electrically operated directional control valve for oxygen generation according to claim 1, wherein a sealing ring (112) is provided on a side wall of the sealing seat (111).
6. The electrically commutated control valve for oxygen generation according to claim 1, wherein the gear drive mechanism (12) comprises a drive wheel (121), a driven wheel assembly (122), and a motor (123);
the driving wheel (121) is in key connection with the motor (123), the driven wheel assembly (122) comprises an upper driven wheel and a lower driven wheel, the upper driven wheel and the lower driven wheel are connected through a connecting shaft, and the upper driven wheel and the lower driven wheel are respectively meshed with the driving wheel (121) and the rack (114).
7. The electric reversing control valve for oxygen generation according to claim 6, characterized in that one driving wheel (121) and one motor (123) are provided, two driven wheel assemblies (122) are symmetrically arranged along the central plane of the driving wheel (121), and when the motor (123) rotates, the driven wheel assemblies (122) drive racks (114) arranged in the vacuum chamber (107) and the pressure chamber (108) to move in opposite directions.
8. The electrically operated directional control valve for oxygen generation according to claim 1, wherein a position detection sensor (115) is mounted on the seal seat (111), and the position detection sensor (115) is electrically connected to a controller for driving the gear driving mechanism (12).
9. The electrically operated directional control valve for oxygen generation according to claim 1, wherein the gas inlet/outlet port (101), the adsorption tower connection port (102), the blower inlet connection port (103), and the blower outlet connection port (104) are respectively provided at side walls of the first common chamber (105), the second common chamber (106), the vacuum chamber (107), and the pressure chamber (108).
10. The control method of the electrically-operated directional control valve for oxygen production according to any one of claims 1 to 9, characterized in that the switching between two operating states is achieved by controlling the position of the seal holder (111) by the gear drive mechanism (12):
the first working state: the gear driving mechanism (12) drives a sealing seat (111) in the vacuum cavity (107) to be sealed with the second communication port, the vacuum cavity (107) is communicated with the first common cavity (105), the vacuum cavity (107) is closed with the second common cavity (106), the gear driving mechanism (12) drives the sealing seat (111) in the pressure cavity (108) to be sealed with the third communication port, the pressure cavity (108) is communicated with the second common cavity (106), the pressure cavity (108) is closed with the first common cavity (105), at the moment, the vacuum cavity (107) is communicated with the pressure cavity (108) through a fan to form an air path, and air is sucked into the adsorption tower under the action of the fan;
the second working state: the gear driving mechanism (12) drives the sealing seat (111) in the vacuum cavity (107) to be sealed with the first communicating port, the vacuum cavity (107) and the first common cavity (105) are closed, the vacuum cavity (107) is communicated with the second common cavity (106), the gear driving mechanism (12) drives the sealing seat (111) in the pressure cavity (108) to be sealed with the fourth communicating port, the pressure cavity (108) and the second common cavity (106) are closed, the pressure cavity (108) is communicated with the first common cavity (105), at the moment, the vacuum cavity is communicated with the pressure cavity (107) through a fan to form a gas path, and gas is discharged from the adsorption tower under the action of the fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129283.XA CN112943975A (en) | 2021-01-29 | 2021-01-29 | Electric reversing control valve for oxygen generation and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110129283.XA CN112943975A (en) | 2021-01-29 | 2021-01-29 | Electric reversing control valve for oxygen generation and control method |
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| CN112943975A true CN112943975A (en) | 2021-06-11 |
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| CN202110129283.XA Pending CN112943975A (en) | 2021-01-29 | 2021-01-29 | Electric reversing control valve for oxygen generation and control method |
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Application publication date: 20210611 |