阅读说明：本技术 一种流量测量机构及测量装置 (Flow measuring mechanism and measuring device ) 是由 张咏 于 2020-04-15 设计创作，主要内容包括：本发明提供了一种流量测量机构及测量装置,属于医疗设备技术领域,包括壳体、设置在所述壳体上方的计量组件以及活动设置在所述壳体内部的节流组件,所述壳体内部一侧设置有进气腔,另一侧设置有出气腔,所述出气腔的截面积大于所述进气腔的截面积。本发明实施例具有结构简单以及拆装方便的优点,通过将气流自进气腔通入,气流经过节流组件后由出气腔排出,在节流组件的作用下使得进气腔与出气腔之间形成一定的压力差,利用计量组件得出流量数据；在节流组件使用一段时间后,通过解除支撑机构对于节流组件的固定,将节流组件从出气腔端口处取出,从而对节流组件进行清理和维护,从而避免节流组件零件老化以及粘附有附着物,导致计量精度降低。(The invention provides a flow measuring mechanism and a flow measuring device, which belong to the technical field of medical equipment and comprise a shell, a metering component arranged above the shell and a throttling component movably arranged in the shell, wherein one side of the interior of the shell is provided with an air inlet cavity, the other side of the interior of the shell is provided with an air outlet cavity, and the sectional area of the air outlet cavity is larger than that of the air inlet cavity. The embodiment of the invention has the advantages of simple structure and convenient assembly and disassembly, and through introducing the airflow from the air inlet cavity and discharging the airflow from the air outlet cavity after passing through the throttling component, a certain pressure difference is formed between the air inlet cavity and the air outlet cavity under the action of the throttling component, and the flow data is obtained by utilizing the metering component; after the throttling assembly is used for a period of time, the throttling assembly is taken out from the air outlet cavity port by removing the fixing of the supporting mechanism on the throttling assembly, so that the throttling assembly is cleaned and maintained, the parts of the throttling assembly are prevented from aging, and attachments are prevented from adhering to the parts, and the metering precision is reduced.)

1. The flow measuring mechanism is characterized by comprising a shell (1), a metering component (9) arranged above the shell (1) and a throttling component movably arranged inside the shell (1), wherein one side inside the shell (1) is provided with an air inlet cavity (2), the other side of the shell is provided with an air outlet cavity (7), the sectional area of the air outlet cavity (7) is larger than that of the air inlet cavity (2), so that the air outlet cavity (7) and the air inlet cavity (2) form a stepped surface on the inner wall of the shell (1), the throttling component is positioned in the air outlet cavity (7), one end of the metering component (9) passes through a first air pipe (10) and is communicated with the air inlet cavity (2), the other end of the metering component (9) passes through a second air pipe (8) and is communicated with the shell (1) and the air outlet cavity (7), first trachea (8) and second trachea (10) with the junction of casing (1) is located respectively throttling assembly head and the tail both ends, it keeps away from to go out air cavity (7) the one end of admitting air chamber (2) is provided with and is used for with the throttling assembly shore is in supporting mechanism on the ladder surface.

2. A flow measuring mechanism according to claim 1, characterized in that the throttling assembly comprises a throttling column (4) and a number of throttling channels (6) arranged inside the throttling column (4) and passing end to end through the throttling column (4).

3. A flow measuring device according to claim 1, characterized in that the support means comprise support plates (14) rotatably mounted on the inner wall of the housing (1) and a knock pin (15) extending through the support plates (14), the knock pin (15) being provided with a threaded section (16) cooperating with the thread of the support plates (14).

4. The flow measuring mechanism according to claim 2, wherein a plurality of clamping grooves (11) are formed in the outer wall of the throttling column (4), the clamping grooves (11) extend from one end of the throttling column (4) to the other end of the throttling column, and the clamping grooves (11) are parallel to the central axis of the throttling column (4); the inner wall of the shell (1) is provided with a plurality of guide rails (5) matched with the clamping grooves (11).

5. A flow measuring mechanism according to claim 3, wherein the inner wall of the housing (1) is provided with a receiving groove (12) adapted to the support plate (14), and the upper end of the support plate (14) is rotatably disposed at one side of the receiving groove (12) via a pin (13).

6. A flow measuring device according to claim 5, characterized in that the side wall of the support plate (14) is connected to the bottom of the receiving chamber (12) by means of a resilient support (17).

7. A flow measuring mechanism according to claim 6, characterized in that the resilient support (17) is a spring.

8. A flow measuring mechanism according to claim 2 or 4, characterized in that the throttle cylinder (4) is provided with a sealing gasket (3) on the side facing the inlet chamber (2).

9. A flow measuring device according to claim 8, characterised in that the sealing ring gasket (3) is made of a rubber material.

10. A flow measuring device characterized by comprising the flow measuring mechanism according to any one of claims 1 to 9.

Technical Field

The invention belongs to the technical field of medical equipment, and particularly relates to a flow measuring mechanism and a measuring device.

Background

A differential pressure flow meter is an instrument that measures flow. The flow rate is measured by measuring the pressure difference based on the principle that a certain relation exists between the pressure difference and the flow rate generated when the fluid flows through the throttling device.

When current differential pressure flowmeter is measuring the fluid flow, throttling arrangement installs in being surveyed the pipeline with fixed form mostly, and it is comparatively inconvenient to dismantle, uses the back for a long time at throttling arrangement, the easy debris that a large amount of fluids of adhesion carried in its throttle passage, and these debris can lead to the metering error increase, can have part ageing phenomenon after using for a long time of throttling arrangement in addition, consequently need regularly dismantle clearance and change throttling arrangement.

Disclosure of Invention

In view of the above deficiencies of the prior art, an embodiment of the present invention provides a flow measurement mechanism and a measurement device.

In order to solve the technical problems, the invention provides the following technical scheme:

A flow measuring mechanism and a measuring device comprise a shell, a metering component arranged above the shell and a throttling component movably arranged in the shell, an air inlet cavity is arranged at one side in the shell, an air outlet cavity is arranged at the other side in the shell, the sectional area of the air outlet cavity is larger than that of the air inlet cavity, so that the air outlet cavity and the air inlet cavity form a step surface on the inner wall of the shell, the throttling component is positioned in the air outlet cavity, one end of the metering component penetrates through the shell through a first air pipe and is communicated with the air inlet cavity, the other end of the metering component penetrates through the shell through a second air pipe and is communicated with the air outlet cavity, the joints of the first air pipe and the second air pipe with the shell are respectively positioned at the head end and the tail end of the throttling component, one end of the air outlet cavity, which is far away from the air inlet cavity, is provided with a supporting mechanism for supporting the throttling assembly on the stepped surface.

As a further improvement of the invention: the throttling assembly comprises a throttling column and a plurality of throttling channels which are arranged in the throttling column and run through the throttling column from head to tail.

As a further improvement of the invention: the supporting mechanism comprises a plurality of supporting plates which are rotatably arranged on the inner wall of the shell and a knock pin which penetrates through the supporting plates, and a thread section which is matched with the threads of the supporting plates is arranged on the knock pin.

As a further improvement of the invention: the outer wall of the throttling column is provided with a plurality of clamping grooves, the clamping grooves extend from one end to the other end of the throttling column, and the clamping grooves are parallel to the central axis of the throttling column; the inner wall of the shell is provided with a plurality of guide rails matched with the clamping grooves.

As a still further improvement of the invention: the inner wall of the shell is provided with a containing groove matched with the supporting plate, and the upper end of the supporting plate is rotatably arranged on one side of the containing groove through a pin rod.

As a still further improvement of the invention: the supporting plate side wall is connected with the bottom of the containing groove through an elastic supporting piece.

As a still further improvement of the invention: the elastic supporting piece is a spring.

As a still further improvement of the invention: and one side of the throttling column, which faces the air inlet cavity, is provided with a sealing ring gasket.

As a still further improvement of the invention: the sealing ring gasket is made of rubber materials.

A flow rate measuring device includes the flow rate measuring mechanism.

Compared with the prior art, the invention has the beneficial effects that:

The embodiment of the invention has the advantages of simple structure and convenient assembly and disassembly, and through introducing the airflow from the air inlet cavity and discharging the airflow from the air outlet cavity after passing through the throttling component, a certain pressure difference is formed between the air inlet cavity and the air outlet cavity under the action of the throttling component, and the flow data is obtained by utilizing the metering component; after the throttling assembly is used for a period of time, the throttling assembly is taken out from the air outlet cavity port by removing the fixing of the supporting mechanism on the throttling assembly, so that the throttling assembly is cleaned and maintained, the parts of the throttling assembly are prevented from aging, and attachments are prevented from adhering to the parts, and the metering precision is reduced.

Drawings

FIG. 1 is a schematic view of a flow measuring mechanism;

FIG. 2 is a schematic view of a throttling assembly of a flow measuring mechanism;

FIG. 3 is an enlarged schematic view of area A of a flow measuring mechanism;

In the figure: the device comprises a shell 1, a gas inlet cavity 2, a sealing ring pad 3, a throttling column 4, a guide rail 5, a throttling channel 6, a gas outlet cavity 7, a second gas pipe 8, a metering component 9, a first gas pipe 10, a clamping groove 11, a containing groove 12, a pin rod 13, a support plate 14, a top pin 15, a thread section 16 and an elastic support member 17.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.