Novel oxygenerator flowmeter

Abstract

The utility model discloses a novel oxygenerator flowmeter which is mainly characterized in that a spiral shifting piece is arranged on a mandrel assembly; protruding parts are annularly arrayed on the bottom end face of a flywheel disc of the mandrel assembly. A lug boss is arranged at one end close to the spiral shifting piece; the adjusting disc body, the flow limiting disc, a core shaft of the core shaft assembly and the spiral shifting piece are rotated by rotating the rotary knob, so that the protruding part of the spiral shifting piece makes contact with the protruding part of the flywheel disc, and the protruding part of the spiral shifting piece is clamped in the space, adjacent to the protruding part, of the flywheel disc to achieve flow adjustment. The gear shifting mechanism has the advantages that through the action form of the protruding part of the spiral shifting piece, the spiral shifting piece is in point contact with the semi-spherical body, the semi-cylindrical body and the semi-spherical body of the protruding part on the flywheel disc, the pause feeling and the resistance feeling felt when the rotary knob is rotated are eliminated, and then smooth gear shifting is achieved by rotating the rotary knob.

Description

Technical Field

[0001] The utility model relates to a flow meter, in particular to a novel flow meter for an oxygen concentrator. Background Art

[0002] The Chinese utility model patent with the authorization announcement number CN214667068U discloses a fixed-speed flow meter for a household oxygen concentrator, which drives the disc body and the regulating flow limiting disc to rotate by rotating the knob, and the steel ball is compressed and tightened on the spring, so that the steel ball slides on the herringbone boss, and finally positioned in the groove adjacent to the herringbone boss to achieve flow regulation. Due to the herringbone boss structure of the disc body, when the knob is rotated to adjust the flow, the steel ball is subjected to the compression and tension of the spring, causing rolling friction between the steel ball and the herringbone boss, so when the knob is rotated, the first feeling is frustration, and the second feeling is resistance.

[0003] Therefore, a new type of oxygen concentrator flow meter is proposed to optimize the adverse perception caused by rotating the knob when adjusting the flow direction. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned existing problems and provide a new type of oxygen concentrator flow meter.

[0005] In order to overcome the shortcomings of the above technical problems, the technical solution adopted by the utility model is:

[0006] It includes a valve body; an adjusting disc body with one end arranged inside the valve body and the other end arranged outside the valve body and connected to a knob; a flow limiting disc arranged on the adjusting disc body; a spindle assembly connected to the adjusting disc body, the valve body, and the base; it is characterized in that it also includes a spiral paddle arranged on the spindle assembly; a ring-shaped array of raised portions on the bottom end surface of the flywheel disk of the spindle assembly; a raised portion is arranged near one end of the spiral paddle; the adjusting disc body, the flow limiting disc, the spindle of the spindle assembly, and the spiral paddle are rotated by rotating the knob, so that the raised portion of the spiral paddle contacts the raised portion of the flywheel disk, and the raised portion of the spiral paddle is clamped in the space between adjacent raised portions on the flywheel disk to achieve flow regulation.

[0007] Furthermore, the spindle assembly includes a spindle, a flywheel disc arranged on the spindle, a bracket supporting the bottom end surface of the flywheel disc and matching the outer circle clearance of the flywheel disc, the bottom end of the bracket is connected to the base, and the upper end of the bracket is connected to the valve body.

[0008] Furthermore, an external thread is provided at the center of the flywheel disc, and the flywheel disc is screwed together with the internal thread in the valve body through the external thread at the center of the flywheel disc to fit the upper end surface of the flywheel disc with the bottom surface of the valve body.

[0009] Furthermore, both ends of each protrusion on the flywheel disc are hemispherical bodies, and the middle part of each protrusion on the flywheel disc is a semi-cylinder.

[0010] Furthermore, the raised portion of the spiral pick is a spherical body.

[0011] Furthermore, the flow limiting disk is provided with a boss, the adjusting disk body is provided with a positioning hole, and the flow limiting disk is connected to the positioning hole on the adjusting disk body through the boss.

[0012] Compared with the prior art, the beneficial effect of the utility model is that the raised part of the spiral paddle is brought into point contact with the raised part on the flywheel disc, which is then a hemispherical body, a semi-cylindrical body, and then a hemispherical body, thereby eliminating the sense of frustration and resistance felt when rotating the knob, thereby achieving smooth gear shifting by rotating the knob. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is the front view of the utility model.

[0015] Figure 2 yes Figure 1 Top view of the .

[0016] Figure 3 yes Figure 2 Shown is a cross-sectional view along line AA.

[0017] Figure 4 yes Figure 3 Shown is a partial enlarged view of area B.

[0018] Figure 5 yes Figure 3 Shown is a partial enlarged view of region C.

[0019] Figure 6 It is the front view of the mandrel assembly of the utility model.

[0020] Figure 7 yes Figure 6 Top view of the .

[0021] Figure 8 yes Figure 6 Bottom view of .

[0022] Fig. 9 yes Figure 7 Shown is a cross-sectional view along line EE.

[0023] Fig.10 It is a stereoscopic diagram of the mandrel assembly of the utility model.

[0024] Fig.11 It is a front view of the spiral pick of the utility model.

[0025] Fig.12 yes Fig.11 Top view of the .

[0026] Fig.13 yes Fig.11 Stereoscopic diagram.

[0027] Description of reference numerals:

[0028] 1. Valve body; 2. Knob; 3. Adjustment plate; 4. Flow limiting plate; 5. Base; 6. Mandrel assembly; 7. Spiral paddle; 8. Raised portion; 9. Boss; 10. Positioning hole; 11. Connector body; 12 Flow limiting hole; 13. Throttling channel; 601. Mandrel; 602. Flywheel disc; 603. External thread; 604. Bracket; DETAILED DESCRIPTION

[0029] As shown in the figure, it includes a valve body 1, an adjusting disc body 3 with one end arranged inside the valve body 1 and the other end arranged outside the valve body 1 and connected to the knob 2, a flow limiting disc 4 arranged on the adjusting disc body 3, a spindle assembly 6 connected to the adjusting disc body 3, the valve body 1, and the base 5, a spiral paddle 7 arranged on the spindle assembly 6, a ring-shaped array protrusion 8 on the bottom end surface of the flywheel disc 602 of the spindle assembly 6, and a protrusion 8 arranged near one end of the spiral paddle 7. By rotating the knob 2 to rotate the adjusting disc body 3, the flow limiting disc 4, the spindle 601 of the spindle assembly 6, and the spiral paddle 7, the protrusion 8 of the spiral paddle 7 is brought into contact with the protrusion 8 of the flywheel disc 602, so that the protrusion 8 of the spiral paddle 7 is clamped in the space adjacent to the protrusion 8 on the flywheel disc 602 to achieve flow regulation.

[0030] The spindle assembly 6 includes a spindle 601, a flywheel disc 602 arranged on the spindle 601, a bracket 604 supporting the bottom end surface of the flywheel disc 602 and matching the outer circle clearance of the flywheel disc 602, the bottom end of the bracket 604 is connected to the base 5, and the upper end of the bracket 604 is connected to the valve body 1;

[0031] An external thread 603 is provided at the center of the flywheel disc 602, and the flywheel disc 602 is screwed together with the internal thread in the valve body 1 through the external thread 603 at the center to fit the upper end surface of the flywheel disc 602 with the bottom surface of the valve body.

[0032] In this way, the flywheel disc 602 is fixed in the valve body 1 and between the bracket 604 .

[0033] Both ends of each protrusion 8 on the flywheel disc 602 are hemispherical bodies, and the middle part of each protrusion 8 on the flywheel disc 602 is a semi-cylinder.

[0034] The raised portion 8 of the spiral pick 7 is a spherical body.

[0035] The flow limiting disc 4 is provided with a boss 9, and the adjusting disc body 3 is provided with a positioning hole 10. The flow limiting disc 4 is connected to the positioning hole 10 on the adjusting disc body 3 through the boss 9. In this way, when the knob 2 is turned, the adjusting disc body 3, the flow limiting disc 4, the spindle 601 of the spindle assembly 6, and the spiral paddle 7 rotate together at the same time. At this time, the action form of the raised portion 8 of the spiral paddle 7 is to eliminate the sense of frustration and resistance when rotating the knob by point contact with the hemispherical body, the semi-cylindrical body, and then the hemispherical body of the raised portion 8 on the flywheel disc 602 from the space adjacent to the raised portion 8 on the flywheel disc 602. In this process, since the raised portion 8 of the spiral paddle 7 is in contact with the raised portion 8 on the wheel disc 602, the overall height of the spiral paddle 7 is compressed under the action of its own spiral rise angle, so that the raised portion 8 of the spiral paddle 7 and the raised portion 8 on the flywheel disc 602 are always kept in contact.

[0036] When the raised portion 8 of the spiral paddle 7 reaches the space between the adjacent raised portion 8 on the flywheel 602, the raised portion of the spiral paddle 7 is at the root of the semi-sphere of the raised portion 8 on the wheel 602, that is, close to the bottom end surface of the flywheel 602. Therefore, the spiral paddle 7 uses its own spiral angle to change from the above-mentioned overall height compression to the overall height stretching state, so that the raised portion 8 of the spiral paddle 7 is closely attached to the space between the adjacent raised portion 8 on 602. Therefore, when rotating the knob, the user will not feel frustration and resistance, and the gear shifting can be achieved smoothly by rotating the knob.

[0037] During operation, gas enters the valve body 1 from the joint body 11 below the valve body 1, and the gas fills the valve body 1 through the joint body 11. By rotating the knob 2 to adjust any limiting hole 12 in the adjusting disk body 3 and the limiting disk 4 so that it corresponds to the throttling channel 13 in the valve body, the gas is discharged from the joint body 11 at the upper end of the valve body, and the flow rate of the discharged gas is determined by the diameter of the limiting hole 12 in the adjusting disk body 3 and the limiting disk 4.

[0038] The present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A novel oxygen concentrator flow meter, comprising a valve body (1); an adjustment disc body (3) having one end disposed inside the valve body and the other end disposed outside the valve body and connected to a knob (2); a flow limiting disc (4) disposed on the adjustment disc body; and a spindle assembly (6) connected to the adjustment disc body, the valve body, and a base (5); characterized in that: The invention also comprises a spiral paddle (7) arranged on the spindle assembly; a ring-shaped array of protrusions (8) on the bottom end surface of the flywheel disc (602) of the spindle assembly; a protrusion (8) arranged near one end of the spiral paddle; and by rotating the knob, the adjusting disc body, the flow limiting disc, the spindle (601) of the spindle assembly, and the spiral paddle are rotated, so that the protrusion of the spiral paddle contacts the protrusion of the flywheel disc, and the protrusion of the spiral paddle is clamped in the space between the adjacent protrusions on the flywheel disc to achieve flow regulation.

2. A novel oxygen concentrator flow meter according to claim 1, characterized in that: The spindle assembly comprises a spindle, a flywheel disc arranged on the spindle, and a bracket (604) supporting the bottom end surface of the flywheel disc and matching the outer circle clearance of the flywheel disc, wherein the bottom end of the bracket is connected to the base, and the upper end of the bracket is connected to the valve body.

3. A novel oxygen concentrator flow meter according to claim 1, characterized in that: The center of the flywheel disc is provided with an external thread (603), and the flywheel disc is screwed together with the internal thread in the valve body through the external thread in the center of the flywheel disc to fit the upper end surface of the flywheel disc with the bottom surface of the valve body.

4. A novel oxygen concentrator flow meter according to claim 1, characterized in that: Both ends of each protrusion on the flywheel disc are hemispherical bodies, and the middle part of each protrusion on the flywheel disc is a semi-cylinder.

5. A novel oxygen concentrator flow meter according to claim 1, characterized in that: The raised portion of the spiral pick is a spherical body.

6. A novel oxygen concentrator flow meter according to claim 1, characterized in that: The flow limiting disk is provided with a boss (9), the adjusting disk body is provided with a positioning hole (10), and the flow limiting disk is connected to the positioning hole on the adjusting disk body via the boss.

Images