CN209827876U - Float flowmeter and medical instrument - Google Patents

Abstract

The utility model provides a float flowmeter and medical instrument can ensure the effectual rotation of float in the use to this solves the problem that the measurement accuracy that the float leads to owing to the static that produces with the friction of flow tube is low at the up-and-down motion in-process. The float flowmeter comprises a flow tube, a float and a conductive plug, wherein the float is movably arranged in the flow tube, part of the conductive plug is inserted into the flow tube and is in sealed connection with the flow tube, and meanwhile the float is configured to be in contact with the conductive plug at an initial position. Preferably, the medical device further comprises a metal support member in interference fit with the conductive plug, so as to ensure reliability of electrostatic discharge.

Description

Float flowmeter and medical instrument

Technical Field

The utility model relates to a flowmeter, in particular to float flowmeter that can release static and contain this float flowmeter's medical instrument.

Background

In anesthesia therapy, anesthetic gas is typically delivered to a patient by means of a float flow meter. Traditional float flowmeter, in the use, the friction between the float of motion and the glass pipe can produce static, and static can make the float adsorb on the glass pipe, causes the float not to rotate, influences the accuracy of measuring and adjusting then.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a float flowmeter and medical instrument aims at solving among the prior art problem that measurement and regulation accuracy are low that float flowmeter leads to because of the static that float and glass pipe friction arouse.

In order to solve the technical problem, the utility model provides a float flowmeter, including flow tube, float and electrically conductive end cap, the float is mobile to be located in the flow tube, some of electrically conductive end cap insert the flow tube and with flow tube sealing connection, just the float be configured as when the initial position with electrically conductive end cap contact.

Furthermore, the conductive plug comprises a T-shaped head part and a T-shaped tail part, and the tail part is inserted into the flow tube and is in interference connection with the inner hole of the flow tube to realize sealing.

Furthermore, a part of the outer surface of the tail part bulges outwards to form a circle of convex hull, and the convex hull is in interference connection with the inner hole of the flow tube through elastic deformation.

Furthermore, a plurality of elastic sheets are formed on the head and are in interference connection with an external metal support piece through elastic deformation.

Furthermore, the number of the elastic sheets is three or four.

Furthermore, the conductive plug is of a non-metal structure.

Furthermore, the conductive plug is of a conductive plastic structure.

Further, the float is of a metal structure, and the flow tube is of a non-metal structure.

In addition, the utility model also provides a medical apparatus, which comprises a metal supporting piece and the float flowmeter; the float flowmeter is fixedly arranged on the metal supporting piece; the metal support is grounded and connected with the conductive plug of the float flowmeter.

Furthermore, the metal support part is provided with a groove, the float flowmeter is fixedly arranged in the groove, and the conductive plug of the float flowmeter is in interference connection with the groove.

Further, the conductive plug comprises a T-shaped head part and a T-shaped tail part, and the tail part is inserted into the flow tube and is in interference connection with an inner hole of the flow tube;

the head is provided with a plurality of elastic sheets, and the elastic sheets are in interference connection with the grooves through elastic deformation.

Furthermore, the bottom of the groove is provided with an air hole, and meanwhile, the side wall of the air hole is provided with a connecting hole which is used for being connected with an external air source.

Furthermore, a sealing ring is arranged between the conductive plug and the metal support piece.

Further, the medical apparatus is an anesthesia machine.

To sum up, in the utility model provides an among the float flowmeter, through setting up electrically conductive end cap to make electrically conductive end cap and float contact, can in time derive the float at the up-and-down motion in-process with the static that the flow tube friction produced, thereby ensure that the float can effectual rotation in the use, solve the float at the up-and-down motion in-process because the measurement that leads to with the static that the flow tube friction produced and adjust the problem that the accuracy is low, static can effectually be eliminated moreover, and the live time is long.

In addition, the conductive plug preferably comprises a T-shaped head part and a T-shaped tail part, the tail part is in interference connection with an inner hole of the flow tube, more preferably, a part of the outer surface of the tail part bulges outwards to form a circle of convex hull, and the convex hull is in interference connection with the inner hole of the flow tube through elastic deformation.

Additionally, the utility model provides an among the medical instrument, not only can fixed mounting float flowmeter through metal support piece, also can in time derive the static on the electrically conductive end cap and release to the ground, simple structure, electrically conductive effectual. Preferably, the grooves in the metal supporting piece are in interference connection with the plurality of elastic pieces on the conductive plugs, so that the connection reliability is high, the float flowmeter can be conveniently disassembled and assembled, and the disassembling and assembling difficulty is reduced.

Drawings

Fig. 1 is a cross-sectional view of a float flowmeter mounted on a metal support according to an embodiment of the present invention;

FIG. 2 is an enlarged partial view of a float flow meter of the type shown in FIG. 1 mounted on a metal support;

fig. 3 is a perspective view of a conductive plug according to an embodiment of the present invention;

fig. 4 is an axial cross-sectional view of the conductive plug shown in fig. 3.

In the figure:

10-a metal support; 11-air holes; 12-a connection hole; 13-a groove;

20-float flow meter; 21-a float; 22-a flow tube; 23-a conductive plug; 231-an intermediate channel; 232-tail; 233-convex hull; 234-step face; 235-a head; 236-a spring plate;

30-sealing ring.

Detailed Description

The float flowmeter and the medical instrument according to the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. The same or similar reference numbers in the drawings identify the same or similar elements.

Fig. 1 is a sectional view of a float flowmeter according to an embodiment of the present invention, where the float flowmeter is mounted on a metal supporting member, fig. 2 is a partially enlarged view of the float flowmeter shown in fig. 1, fig. 3 is a perspective view of a conductive plug according to an embodiment of the present invention, and fig. 4 is an axial sectional view of the conductive plug shown in fig. 3.

As shown in fig. 1 to 4, the present embodiment provides a medical instrument, and the medical instrument is not limited to an anesthesia machine. Specifically, the medical device includes a metal support 10 and a float flow meter 20. The material of the metal support 10 includes, but is not limited to, aluminum, which is used to support the float flow meter 20, thereby achieving a fixed mounting of the float flow meter 20. The float flowmeter 20 is fixedly mounted on the metal support 10, but the mounting direction is not limited to vertical mounting.

The float flowmeter 20 includes a float 21, a flow tube 22, and a conductive plug 23. The float 21 is made of a metal material and is movably disposed in the flow tube 22. The flow tube 22 is made of a non-metallic material including, but not limited to, glass. A portion of the conductive plug 23 is inserted into the flow tube 22 and is connected to the flow tube in a sealing manner, and the conductive plug 23 further has a middle channel 231, one end of which is communicated with the flow tube 22 and the other end of which is communicated with an external air source.

The operating principle of the float flowmeter 20 of the present embodiment is: external gas flow (including but not limited to gas) enters the flow tube 22 through the intermediate channel 231 in the conductive plug 23; due to the air flow, the float 21 will float at a certain position of the flow pipe 22, and the air flow will also rotate the float 21; when a user sets a certain flow rate value, the float 21 will rotate continuously at a certain floating position in the flow pipe 22, and the constant rotation of the float 21 relative to the flow pipe 22 makes it easier for the user to identify the position of the float 21.

In practice, the float 21 often needs to be adjusted to move up and down relative to the flow tube 22, during which friction and hence static electricity is generated due to the float 21 coming into contact with the inner wall of the flow tube 22. For this reason, static electricity generated by friction of the float 21 with the flow tube 22 during the up-and-down movement is conducted out through the conductive plug 23. Specifically, when the float 21 returns to the initial position by its own weight during adjustment, the float directly contacts the conductive plug 23 to discharge static electricity, and the static electricity discharged from the conductive plug 23 is further discharged to the ground through the metal support 10. Therefore, the metal support 10 further discharges static electricity by contacting the conductive plug 23 in addition to fixing the float flowmeter 20.

Therefore, by using the float flowmeter 20, static electricity generated by friction between the float 21 and the flow tube 22 in the up-and-down movement process can be timely led out through the conductive plug 23, so that the float 21 can effectively rotate in the use process, the problem of low measurement accuracy caused by the static electricity generated by friction between the float 21 and the flow tube 22 in the up-and-down movement process is solved, the static electricity can be effectively eliminated, and the use time is long.

Further, in the present embodiment, the metal supporting member 10 is grounded through a grounding wire. In other embodiments, the metal support 10 may also be connected to an external metal member (e.g., a sheet metal part on an electronic device), and the external metal member is grounded.

Further, a groove 13 is formed on the metal supporting member 10, and the groove 13 is circular. In actual installation, the assembled flow tube 22 and conductive plug 23 are placed together in the recess 13 and secured. The metal support 10 is embodied as an aluminum member on which a plurality of spaced recesses 13 may be provided, each recess 13 being adapted to receive a float flow meter 20, and the aluminum member may be assembled from a plurality of sub-members.

Further, in order to improve the reliability of the connection, the conductive plugs 23 are preferably connected with the grooves 13 in an interference manner.

The conductive plug 23 is preferably made of a non-metallic material capable of conducting electricity, such as conductive plastic, graphite, conductive rubber, conductive ceramic, etc., which not only facilitates the smooth insertion of the conductive plug 23 into the flow tube 22 to avoid damage to the flow tube 22, but also ensures good sealing, and more preferably, the conductive plug 23 is made of a material selected from conductive plastics.

Still further, the conductive plug 23 includes a T-shaped portion with a tail portion 232 that is inserted into the flow tube 22, and a portion of the outer surface dimension (outer diameter) of the tail portion 232 is preferably larger than the inner surface dimension (inner diameter) of the flow tube 22 to provide an interference fit. More preferably, a part of the outer surface of the tail portion 232 bulges outward to form a circular arc-shaped convex hull 233, the outer diameter of the convex hull 233 is larger than the inner diameter of the flow tube 22, and in practical applications, the convex hull 233 is elastically deformed to be in interference fit with the inner bore of the flow tube 22, so that the connection has high reliability and good sealing performance. Here, it will be appreciated that the outer diameter of the remainder of the tail portion 232, except for the convex hull 233, is less than the inner diameter of the flow tube 22.

Further, the step surface 234 of the T-shaped portion contacts the lower end surface of the flow tube 22. Further, head 235 of the T-shaped portion is positioned outside flow tube 22 and sealingly engages the lower end of flow tube 22. preferably, the outer surface dimension (outer diameter) of head 235 is greater than the outer surface dimension (outer diameter) of flow tube 22, and causes head 235 of conductive plug 23 to interferingly engage with recess 13 of metal support 4.

Preferably, a plurality of elastic sheets 236 are formed on the head portion 235, and an outer diameter of the head portion 235 defined by the plurality of elastic sheets 236 is larger than an inner diameter of the groove 13, so that in practical application, the plurality of elastic sheets 236 are elastically deformed to be in interference connection with the groove 13 to realize clamping. Here, the plurality of elastic pieces 236 on the conductive plug 23 are in interference connection with the metal support 10, so that sufficient contact between the conductive plug 23 and the metal support 10 can be effectively ensured, static electricity on the float flowmeter 20 can be reliably released, the conductive effect is good, the float flowmeter 20 can be conveniently dismounted, and the dismounting difficulty is reduced. The number of the elastic pieces 236 is not limited to four as shown in the figure, and may be two, three or four.

Further, the bottom of the groove 13 of the metal support 10 is provided with an air hole 11 communicating with the middle channel 231. The air holes 11 can be arranged in the direction vertical to the bottom of the groove 13. Furthermore, a connecting hole 12 is formed in the side wall of the air hole 11, and the connecting hole 12 is used for being connected with an external air source. Further, a sealing device is arranged between the conductive blocking head 23 and the metal support 10, the sealing device is preferably a sealing ring 30, and the sealing ring 30 prevents gas from leaking, so that the reliability and safety of the medical device are improved.

Further, the cross section of the inner hole of the flow tube 22 increases gradually, i.e., changes in a tapered shape, from the lower end to the upper end, where the end indicated by gravity is the lower end of the flow tube 22 when the float flowmeter 20 is installed vertically. The upper end of the flow tube 22 can then be connected in a sealing manner by a further plug, which is not provided with electrical conductivity and which also has a channel for conducting the gas from the flow tube 22.

Further, when the medical device of the present embodiment is an anesthesia machine, it can deliver anesthetic gas into the lungs of the human body through the float flow meter 20 to perform related anesthesia treatment. In case the float flow meter 20 is used in a medical device, it is preferred that the material of the conductive plug 23 is a biocompatible material.

To sum up, in the float flowmeter provided by the embodiment of the utility model, through setting up electrically conductive end cap to make electrically conductive end cap and float contact, can in time derive the float at the up-and-down motion in-process with the static that the flow tube friction produced, thereby ensured that the float can effectual rotation in the use, solved the float with this in the up-and-down motion because the problem that the measurement accuracy that leads to with the static that the flow tube friction produced is low, static can effectually be eliminated moreover, and the live time is long.

In addition, among the medical instrument that this embodiment provided, through being connected metal support and float flowmeter interference, the reliability of being connected can be promoted on the one hand, ensures that electrically conductive end cap and metal support fully contact to this guarantees that the static that produces on the float flowmeter can obtain effectual release, and the dismouting of the float flowmeter of also being convenient for on the other hand reduces the dismouting degree of difficulty.

The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.

Claims (14)

1. A float flow meter comprising a flow tube, a float movably disposed in the flow tube, and a conductive plug having a portion inserted into and sealingly connected to the flow tube, the float being configured to contact the conductive plug at a start position.

2. The float flow meter of claim 1 wherein said conductive plug includes a T-shaped head portion and a T-shaped tail portion, said tail portion being inserted into said flow tube and sealingly engaged with said flow tube bore by interference fit.

3. The float flowmeter of claim 2, wherein a portion of the outer surface of said tail section bulges outwardly to form a ring of convex hulls that are elastically deformed into an interference fit with the inner bore of said flow tube.

4. A float flowmeter according to claim 2 or 3, wherein a plurality of resilient tabs are formed on the head, the plurality of resilient tabs being in interference engagement with the external metal support by elastic deformation.

5. A float flow meter according to claim 4, characterized in that the number of said clips is three or four.

6. A float flowmeter according to claim 1 or 2, wherein said conductive plug is of non-metallic construction.

7. The float flowmeter of claim 6, wherein said conductive plug is of conductive plastic construction.

8. A float flowmeter according to claim 1 or 2, wherein said float is of metal construction and said flow tube is of non-metal construction.

9. A medical device comprising a metallic support and a float flow meter according to any of claims 1-8; the float flowmeter is fixedly arranged on the metal supporting piece; the metal support is grounded and connected with the conductive plug of the float flowmeter.

10. The medical device of claim 9, wherein the metal support has a recess, the float flow meter is fixedly mounted in the recess, and the conductive plug of the float flow meter is in interference fit with the recess.

11. The medical device of claim 10, wherein said conductive plug includes a T-shaped head portion and a T-shaped tail portion, said tail portion being inserted into said flow tube and in interference engagement with said inner bore of said flow tube;

the head is provided with a plurality of elastic sheets, and the elastic sheets are in interference connection with the grooves through elastic deformation.

12. The medical apparatus as claimed in claim 10, wherein the bottom of the recess is provided with an air hole, and a side wall of the air hole is provided with a connecting hole for connecting with an external air source.

13. The medical device of claim 9, wherein a seal is disposed between the conductive plug and the metal support.

14. A medical device according to any of claims 9-13, characterized in that the medical device is an anaesthetic machine.