CN218220754U - Fluid cavity detection device in transfer line - Google Patents

Abstract

The utility model relates to a peristaltic pump technical field, concretely relates to fluid hole detection device in transfer line, its device body includes the workstation, determine module and the fixed subassembly of work piece all set up in the homonymy surface of workstation, determine module has a work piece and places the screens, the work piece is placed the screens and is a sunk structure, the examination work piece that awaits measuring is placed in the work piece places the screens, the fixed subassembly of work piece includes the depression bar, spring and splenium down, the depression bar is one can follow its length direction and be straight reciprocating motion's stock structure, the depression bar passes through spring coupling splenium down, the splenium has a terminal surface down, protruding one is convenient for the card to go into the work piece on it and places the pressure head down of screens. The utility model discloses have better adaptability, have the flexibility that the staff was pressed simultaneously concurrently and the stability that the tool was pressed down, ensured test condition's uniformity, improved the detection precision.

Description

Fluid cavity detection device in transfer line

Technical Field

The utility model relates to a peristaltic pump technical field, concretely relates to fluid hole detection device in transfer line.

Background

After the peristaltic pump is manufactured and molded, it is necessary to detect the occurrence of bubbles (cavities) in the fluid being transported during use and to confirm whether the pump meets the requirements for use. The detection process is typically performed using a bubble sensor. The bubble sensor is a common gas detection device, and when the working condition of the peristaltic pump is detected, ultrasonic detection is carried out on a conveying pipe connected with the peristaltic pump, and whether the generation frequency of bubbles in conveying fluid in the pipe reaches the standard or not is monitored in real time.

In a traditional detection method, a sensor is manually held and then a conveying pipe is clamped into the sensor for testing, or the sensor is fixed on a customized clamp and then is frequently clamped into different conveying pipes and compacted by fingers or a specific jig for testing. However, in the actual detection process, great errors can be generated by manually pressing the conveying pipe by fingers or compacting by adopting related jigs, the detection precision is low, so that the time cost and labor cost for repeated inspection are input, and the production is delayed. This is because the manual pressing of the fixed pipe wall with the fingers depends on the skill of the operator, and the accumulation of the fatigue of the operation causes the degree of force applied by the hand to become more unstable with the length of the operation. Although the fixture compaction can ensure the stable clamping and fixing effects on the conveying pipe, the fixing position of the fixture after being pressed down is still adjusted manually, so that the conveying pipe has a small movable gap due to the fact that the fixture cannot be pressed out of position, the conveying pipe can vibrate along with the fixture under the action of vibration of the peristaltic pump during working or the change of the movement speed of fluid, and the like, so that the detection result is influenced, and if the fixture is pressed excessively, the flow is reduced due to the deformation of the pipe wall, and the bad detection influence is also generated. Most of the existing detection means on the market can not provide good detection precision, thereby affecting the product quality.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fluid hole detection device in transfer line solves above technical problem.

The utility model provides a technical problem can adopt following technical scheme to realize:

a device for detecting fluid cavities in a liquid conveying pipe comprises a device body, wherein the device body comprises a workbench, a detection assembly and a workpiece fixing assembly, the detection assembly and the workpiece fixing assembly are arranged on the surface of the same side of the workbench, the detection assembly is used for detecting the conveying condition of a workpiece to be tested, the detection assembly is provided with a workpiece placing clamp position which is of a concave structure, the workpiece to be tested is placed in the workpiece placing clamp position,

the workpiece fixing component is used for fixing a workpiece to be tested placed on the detection component, the workpiece fixing component comprises a pressing rod, a spring and a pressing part, the pressing rod is a long rod structure capable of linearly reciprocating along the length direction of the pressing rod, the pressing rod is connected with the pressing part through the spring, the pressing part is provided with an end face, and a protrusion is arranged on the pressing part and is convenient to clamp into a pressing head for placing the workpiece in a clamping position.

The utility model discloses a set up the fluid transport hole test that the device body carries out the peristaltic pump, can ensure that the oppression process to the conveyer pipe is stable, and the application of force degree remains suitable throughout, can not take place excessive oppression or press the not enough problem. The spring connects the pressing part and the pressing rod together, so that a dynamic self-adjusting stroke is formed between the pressing rod and the pressing part, when the pressing head contacts and presses the conveying pipe, the supporting force reversely jacks the pressing head, so that the spring is compressed, and the pressing effect on the pipe wall of the conveying pipe is kept appropriate and has self-adaptability and real-time performance.

The workpiece to be tested of the utility model is a transfusion tube suitable for a peristaltic pump.

The pressure lever is connected with the spring through an adjusting bolt.

The protruding height of the lower pressure head is smaller than the depth of the workpiece placing clamping position.

The convex surface of the lower pressure head is of an upward concave structure, and the concave structure is of an arc-shaped structure on the inner surface, so that the concave structure is attached to the outer pipe wall of the conveying pipe contacted with the concave structure.

The detection assembly adopts an ultrasonic bubble detection sensor.

The workpiece fixing component comprises a component base, a guide rail and a sliding block, the guide rail is vertically fixed on the component base, the sliding block is connected with the guide rail in a sliding way,

the pressing part is fixedly connected with the sliding block.

The utility model discloses a guide rail and slider provide direction and dynamic stabilization support for the straight reciprocating motion of depression bar and splenium down.

The workpiece fixing assembly comprises a handle and a connecting piece, the lower end of the pressing rod is connected with the lower pressing portion through the spring, the upper end of the pressing rod is connected with the handle in a rotating mode through the connecting piece, and the handle is connected with the assembly base in a rotating mode.

The component base is provided with a flat surface, and the guide rail and the component bracket are arranged on the flat surface;

the subassembly support has two spaced apart otic placodes, is first otic placode and second otic placode respectively, be equipped with on the second otic placode and be convenient for the through-hole that the depression bar passed, first otic placode rotates and connects the handle.

The utility model discloses a second otic placode that the setting has the through-hole to make the depression bar pass the second otic placode, can ensure that the depression bar is vertical lift.

The second otic placode towards one side face of depression bar is equipped with a sleeve, the sleeve cover in on the through-hole of second otic placode, the depression bar passes successively the sleeve with rotate behind the through-hole on the second otic placode and connect the connecting piece.

The utility model discloses a behind the through-hole of the second otic placode of assembly bracket upper cover formula setting sleeve, make the vertical lift direction of depression bar by further restraint to guidance quality when reinforcing it and making sharp reciprocating motion.

The workbench is provided with a placing groove, and the vertical projection of the lower pressure head is positioned in the placing groove;

the placing groove penetrates through the surfaces of two opposite sides of the workbench, and the placing groove is communicated with one side edge of the workbench.

That is, the placing groove is of an open groove structure and extends to the position right below the lower pressure head after being opened from one side edge of the workbench.

Has the beneficial effects that: due to the adoption of the technical scheme, the utility model discloses have better adaptivity, have the flexibility that the staff was pressed simultaneously concurrently and the stability that the tool was pressed, ensured test condition's uniformity, improved the detection precision.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of a usage scenario of the present invention;

FIG. 3 is a top view of the structure of FIG. 1 with the workpiece holding assembly removed;

fig. 4 is a schematic structural view of the workpiece fixing assembly of the present invention;

FIG. 5 is a schematic view of a portion of the structure of FIG. 4;

fig. 6 is a cross-sectional view of the connecting structure of the pressing rod and the adjusting bolt of the present invention;

fig. 7 is a schematic structural view of the pressing rod of the present invention;

fig. 8 is a schematic view of the coupling structure of the module holder and the sleeve according to the present invention;

fig. 9 is a schematic structural diagram of the detecting assembly of the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further explained with reference to the specific drawings. It should be noted that the terms "first," "second," "third," "fourth," and the like (if any) in the description and in the claims are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments described herein may be implemented in other sequences than those illustrated or described herein. Furthermore, the terms "comprises" or "comprising," and any variations thereof, are intended to cover non-exclusive inclusions, such that a product or apparatus that comprises a list of elements or units is not necessarily limited to those elements or units expressly listed, but may include other elements or units not expressly listed or inherent to such product or apparatus.

Referring to fig. 1, 2 and 3, the device for detecting the fluid cavity in the infusion tube comprises a device body, wherein the device body comprises a workbench 1, a detection assembly 2 and a workpiece fixing assembly 3, and the detection assembly 2 and the workpiece fixing assembly 3 are both arranged on the same side surface of the workbench 1 (on the upper surface of the workbench in a diagram structure).

The detection component 2 is used for detecting the conveying condition of a workpiece 9 to be detected, as shown in fig. 9, the detection component 2 is provided with a workpiece placing clamp 201, the workpiece placing clamp 201 is of a concave structure, the concave structure is formed after the upper surface of the detection component 2 is concave, a data lead 202 is led out from the lower surface of the detection component 2 and is connected with an ultrasonic sensing unit arranged in a shell of the detection component, and the data lead 202 is connected with an external signal sampling device (such as an upper computer or a handheld terminal with a corresponding data interface and other equipment) and then outputs a sampling signal; the left side and the right side of the detection component 2 are respectively provided with an ear seat 203, and each ear seat is provided with a fastening hole 204. Fig. 2 shows a structure in which a workpiece 9 to be tested is placed in a workpiece placement block 201.

The workpiece fixing component 3 is used for fixing a workpiece 9 to be tested, which is placed on the detection component 2, as shown in fig. 4 and 5, the workpiece fixing component 3 includes a pressing rod 301, a spring 302 and a pressing portion 303, the pressing rod 301 is a long rod structure capable of performing linear reciprocating movement along the length direction of the pressing rod, the pressing rod 301 is connected with the pressing portion 303 through the spring 302, the pressing portion 303 has an end face, and a pressing head 304 which is protruded on the pressing portion and is convenient for being clamped into the workpiece placing clamping position 201 is protruded on the pressing head. In some embodiments, the hold-down portion 303 and the hold-down head 304 are integrally formed as a unitary structure during manufacture.

When the utility model works, the concave structure of the workpiece placing clamp 201 of the detection component 2 is arranged upwards, and the workpiece to be tested 9 is clamped in the concave structure;

the pressing part 303 is lifted in the vertical direction, when the pressing part is lifted, the pressing head 304 is contacted with the surface of the workpiece 9 placed in the workpiece placing position 201 from top to bottom, and then the workpiece 9 to be tested is pressed in the workpiece placing position 201 after being applied with force from the vertical direction, so that the vertical displacement of the workpiece 9 in the testing process is reduced or eliminated (the vertical displacement mentioned here includes the vertical displacement generated by the vibration transmitted by the pump during the transfusion process and the displacement generated by the movement of the transfusion tube in the vertical direction caused by the flowing process during the liquid transportation in the tube).

The utility model discloses examination work piece 9 that awaits measuring indicates the transfer line that is applicable to the peristaltic pump, and determine module 2 adopts supersound bubble detection sensor.

In some of the embodiments, the height of the lower pressing head 304 protruding from the lower end surface of the lower pressing portion is set to be smaller than the depth of the workpiece-placing block 201.

The bottom of the working table 1 is provided with a support frame 8. Fig. 2 shows the structure with the support frame 8 at the bottom of the work table 1 hidden.

The utility model discloses an increase the adaptability of device body, can make it test the conveyer pipe of difference, can set up according to following structure: the pressure lever is connected with the spring through an adjusting bolt.

Specifically, as shown in fig. 6 and 7, an adjusting hole 3011 is formed at the lower end of the pressing rod 301, an internal thread is formed in the adjusting hole 3011, the adjusting bolt 305 is screwed into the adjusting hole 3011, and as shown in fig. 4 and 5, the upper end of the spring 302 is fixed to the nut end 3051 of the adjusting bolt 305. If necessary, the length of the pressure lever 301 can be adjusted equivalently by screwing in or out the adjusting bolt 305, which corresponds to the adaptive sensitivity of the adjusting spring 302.

Because the spring 302 is connected on the adjusting bolt 305 of adjustable screw-in degree of depth, consequently the utility model discloses its self-adaptation sensitivity can further be adjusted to the self-adaptation function of performance, thereby makes the utility model discloses can correspond the infusion hose of difference (thickness or material) and test the operation. When different infusion hoses to be tested are replaced, the subsequent testing conditions can be met only by adjusting the adjusting piece for limited times.

In some embodiments, the adjusting bolt 305 is provided with a locking nut 306, and the adjusted position of the adjusting bolt 305 is locked by the locking nut 306.

As shown in fig. 5, before the adjusting bolt 305 is screwed into the pressing rod 301, the locking nut 306 is screwed into the shaft of the adjusting bolt 305, and then the adjusting bolt 305 is screwed into the adjusting hole of the pressing rod 301 to the planned position, and then the locking nut 306 is screwed out from the shaft of the bolt to the locking nut 306 in the screwing direction, which is limited by the port surface of the pressing rod 301 at the adjusting hole, at this time, the current adjusting position of the adjusting bolt 305 is locked. Through setting up lock nut 306, can effectively avoid among the test procedure, receive the accumulative effect that peristaltic pump vibrations were influenced and lead to bolt pole body screw-out or screw-in to influence the self-adaptation sensitivity of pushing down the splenium.

It should be noted that, since the pressing operation of the pressing rod 301 is generally manually performed by a single operation manner such as pulling a handle (in the following embodiments, it is mentioned that the pressing rod is connected to the handle to obtain an external operation), and the pressing displacement and the pressing force are determined by the connection structure of the pressing rod 301, the pressing portion 303, the pressing head 304 and the spring 302, a better adjustment position can be obtained in a plurality of test cycles by screwing in and unscrewing the adjustment bolt 305, so that the subsequent test can be kept better consistent, and more accurate detection data can be obtained. When the type and material of the spring 302 are different or the type and specification of the conveying hose are different, the adjustment position of the adjustment bolt 305 needs to be determined after readjustment according to actual conditions.

In actual operation, to increase the adjustment efficiency of the adjustment bolt 305, the following settings may be made: under the condition that the spring 302 fixes the connection structure of the lower pressing head 304 and the adjusting bolt 305 (for example, the spring is not connected to the lower pressing head or the connection position of the spring on the adjusting bolt is not adjusted), the screwing depth of the adjusting bolt 305 in the pressing rod 301 and the force of the adjusting bolt 305 during pressing are in a certain proportion relation, and based on the condition, when conveying hoses of different types and materials are tested, the adjusting bolt 305 can be used for adjusting proper pressing displacement, so that the lower pressing head 304 is kept at a proper position when pressing the hose, and the phenomenon that the hose is not pressed to be tight to generate a vibration gap or the flow of the hose is cut off due to over pressing is ensured. For example, after data collection is performed in advance, test data can be acquired after the model of a common hose is detected in advance, a data table is generated according to the test data, and the data table is used as an adjusting basis (for adjusting bolts) when the different types of infusion hoses are replaced for testing subsequently. For example, when the infusion hose of type a is tested, the data obtained by the previous test shows that when the depth of the adjustment bolt screwed into the adjustment hole at the lower end of the compression bar is 3mm, the compression position of the lower compression bar on the hose is proper (for example, the tube wall is not obviously deformed and the hose cannot be dragged to be a standard for judging that the compression position is proper), and the adjustment depth can be used as an adjustment basis for the subsequent test of the infusion hose of type a. When the device is used, the infusion software of the type A needs to be tested in a certain subsequent test, but the infusion hose of the type B is tested in the previous test, so that the current state of the device is adjusted to be suitable for the adjustment state of the infusion hose of the type B, and the adjustment depth of the adjusting piece corresponding to the infusion hose of the type A can be obtained after the data table is inquired.

It should be noted here that the proportional relationship between the screwing depth of the adjusting bolt 305 and the force applied to the conveying pipe by the pressing head 304 during pressing down needs to be determined according to the actual selected material data such as the material and specification of the spring 302, which can be determined within the limited number of tests, but the present invention does not apply protection to the adjusting method.

The utility model discloses a damage is avoided to the contact surface structure of pressure head and conveyer pipe under the protection, can set up according to following structure: the convex surface (bottom surface) of the lower pressing head 304 is an upward concave structure (not shown), and the concave structure is a concave structure with an arc-shaped inner surface, so that the concave structure is attached to the outer pipe wall of the conveying pipe contacted with the concave structure.

In some embodiments, the raised surface (bottom surface) of the lower ram 304 is provided with a protective/cushioning pad (not shown). When the convex surface of the lower pressing head 304 is a concave structure which is concave upwards, a protective pad which is attached to the inner surface of the concave is arranged in the concave structure.

The convex surface of the lower pressing head 304 in the above-described embodiment is the bottom surface thereof in the structure shown in fig. 1, 2, 4, and 5.

In addition, each side edge of the convex surface of the lower pressing head 304 can be chamfered to prevent the outer wall of the infusion tube from being damaged when the lower pressing head presses the lower pressing head after a cutting edge is formed.

The utility model discloses a guarantee down the stability of splenium 303 when carrying out straight reciprocating motion along with depression bar 301, can set up according to following structure: as shown in fig. 4 and 5, the workpiece fixing assembly 3 includes an assembly base 307, a guide rail 308, and a slider 309, the guide rail 308 is vertically fixed on the assembly base 307, the slider 309 is slidably connected to the guide rail 308, and the pressing portion 303 is fixedly connected to the slider 309.

The utility model discloses a guide rail 308 and slider 309 for the straight reciprocating motion of depression bar 301 and portion 303 pushes down provides direction and dynamic stability and supports.

Note that the length of the guide rail 308 is set to be not less than the stroke of the linear reciprocating movement of the presser bar 301.

In the above embodiment, when the guide rail 308 and the slider 309 are arranged, the side of the slider 309 not connected to the lower ram 304 is provided with a recess, and the guide surface is clamped in the recess of the slider 309.

In order to prevent the slider 309 from being separated from the guide rail 308 due to an abnormal situation during the sliding, a recess may be provided on the opposite side surface of the guide rail 308, and a protrusion may be provided on the opposite inner wall of the recess of the slider 309, so that the slider 309 and the guide rail 308 are always connected to each other even when an external force is applied thereto when the slider 309 and the guide rail 308 are slidably connected to each other. In this arrangement, when the slider 309 is slidably connected to the guide rail 308, the slider 309 needs to be fitted to the guide rail 308 from either end of the guide rail 308.

In some embodiments, to avoid the slider 309 from exceeding the limit during the movement, a limiting structure (not shown) may be provided at one of the two ends of the guide rail 308, or at both ends. For example, the limiting structure is implemented in the form of a baffle or a stopper. In other embodiments, the spacing structure is disposed on the guide surface.

The utility model discloses a convenient operation of pushing down can set up according to following structure: as shown in fig. 4 and 5, the workpiece fixing assembly 3 comprises a handle 310 and a connecting member 311, the lower end of the pressure lever 301 is connected with the lower pressing part 304 through a spring 302, the upper end is rotatably connected with the handle 310 through the connecting member 311,

the handle 310 rotates the connection assembly base 307.

Specifically, the handle 310 has two rotation connection points (each point can be realized by a fastener hole), the two rotation connection points are arranged at intervals up and down, the upper rotation connection point is rotatably connected with the assembly base 307, and the lower rotation connection point is rotatably connected with the connecting piece 311.

When the handle is pulled forwards or backwards, the pressure rod can move linearly forwards or backwards. In the structure shown in fig. 1, 2 and 4, when the handle 310 is pulled upwards, the pressing rod 301 moves upwards, and the pressing part 303 and the pressing head 304 are lifted, whereas when the handle 310 is pulled downwards, the pressing rod 301 moves downwards, and the pressing part 303 and the pressing head 304 are lowered.

As shown in fig. 5, the connection member 311 may be a plate structure with a bent structure, and two ends of the plate structure are respectively provided with a through hole, so as to be conveniently used as a rotation connection point, and the rotation connection function is realized through a combined structure of a pin shaft and a snap spring, or through a combined structure of a bolt and a nut.

The utility model discloses an ensure that depression bar 301 can keep straight reciprocating motion, make the removal process have the guidance quality, can set up according to following structure: as shown in fig. 4, the component base 307 has a flat surface on which the guide rails 308 and a component holder 312 are provided;

as shown in fig. 4 and 8, the assembly bracket 312 has two spaced-apart ear plates, namely a first ear plate 3121 and a second ear plate 3122, the second ear plate 3122 is provided with a through hole for the pressing rod 301 to pass through, and the first ear plate 3121 is rotatably connected to the handle 310.

The utility model discloses a second otic placode 3122 that the setting has the through-hole to make depression bar 301 pass second otic placode 3122, can ensure that depression bar 301 is vertical lift.

Specifically, as shown in fig. 4, in the structure, the flat surface of the assembly base 307 is vertically arranged and located on one side of the pressing rod 301, the pressing rod 301 is parallel to the pressing rod, the guide rail 308 is arranged on the flat surface in an attaching manner, so that the guide rail 308 is also vertically arranged, and the assembly brackets 312 are arranged above the guide rail 308 at intervals.

In addition, the component holder 312 may be formed as follows: as shown in fig. 8, the second ear plate 3122 is formed by bending one end of the second ear plate, and the other end (facing upward) is grooved, and then the structure located on the groove (above) side is bent perpendicular to the bending direction of the second ear plate 3122 to form the first ear plate 3121. After forming, the ear plate structure in the structure is shown as fig. 1, fig. 2, and fig. 4, wherein the first ear plate 3121 is vertically arranged in the structure shown in the figure (in actual arrangement, it may be correspondingly arranged according to the specific structure of the rotation connection point on the handle, for example, when the rotation connection point on the handle is a rotation axis non-horizontal structure, the first ear plate needs to be arranged perpendicular to the rotation axis), and the second ear plate 3122 is horizontally arranged (in actual arrangement, it may be arranged non-horizontal, but it needs to be ensured that it is perpendicular to the linear reciprocating direction of the pressure lever).

The plate body between the first ear plate 3121 and the second ear plate 3122 is provided with a fastener hole, by which the module bracket is fixed on the module base 307.

The utility model discloses an improve depression bar 301 guidance quality when being straight reciprocating motion, set up as follows: as shown in fig. 4 and 8, a sleeve 313 is disposed on a side plate surface (i.e., a lower surface of the second ear plate) of the second ear plate 3122 facing the pressing rod 301, the sleeve 313 covers the through hole of the second ear plate 3122, and the pressing rod 301 (upward) sequentially passes through the sleeve 313 and the through hole of the second ear plate 3122 and then is rotatably connected to the connecting member 311.

The utility model discloses a cover formula setting sleeve 313 on the through-hole of second otic placode 3122 of subassembly support 311 after, make depression bar 301's vertical lift direction by further restraint to guidance quality when strengthening it and making sharp reciprocating motion.

In some embodiments, the length of the sleeve 313 may be set to 1/5 to 1/2 of the length of the plunger 301.

The utility model discloses a make workstation 1 can use different specification types's determine module 2 in a flexible way, can set up according to following structure: as shown in fig. 2 and 3, the workbench 1 is provided with a placing groove 101, and the vertical projection of the lower pressure head is positioned in the placing groove 101;

the placing groove 101 penetrates through opposite side surfaces of the table 1, and the placing groove 101 communicates with one side of the table 1. That is, the placing groove 101 has an open groove structure, and extends from the rear of the opening of one side of the table 1 to the right below the lower ram. The open-slot structure is arranged to facilitate the placement of the bubble sensor of the conventional structure. Bubble sensor of conventional structure on the market, a side surface of its structure is equipped with the draw-in groove of being convenient for the card to go into the infusion hose (this draw-in groove can be regarded as the utility model discloses a screens 201 is placed to the work piece of determine module 2), and the opposite side then is equipped with the data lead wire (being equivalent to determine module 2's data lead wire 202), connects external signal sampling device (if host computer or have equipment such as handheld terminal that corresponds data interface) behind the lead wire. The design structure of the open slot can facilitate the sensor to be arranged in the placing groove 101 from the opening and move to the position right below the lower pressure head.

In addition, in order to fix the position of the bubble sensor, positioning pins may be disposed on the table top of the table 1, and the positioning pins correspond to through holes (corresponding to the fastening holes 204 in the ear seats 203 of the detection assembly 2) in the ear seats (corresponding to the ear seats 203 of the detection assembly 2) of the bubble sensor one to one. That is, the positioning pins are located on the table tops of the working tables 1 on two sides of the placing groove structure under the lower pressure head, and are opposite to each other in pairs.

As shown in fig. 1, 2 and 3, two sides of the placement groove 101 directly below the lower pressing head are respectively provided with a positioning pin, which respectively correspond to the fastening holes 204 on the two ear seats 203 of the detection assembly of fig. 9.

It is worth mentioning that, the utility model discloses in the in-service use process, owing to be equipped with card entry (the opening part of standing groove 101) at the side of workstation 1, therefore it can replace different kinds of devices temporarily, for example the bubble sensor of different producer models is as new detecting element. And a new clamp or a related jig is not required to be prepared again, so that the practicability and the adaptability are better.

To sum up, the utility model discloses a set up the fluid transport hole test that the device body carries out the peristaltic pump, can ensure that the oppression process to the conveyer pipe is stable, and application of force degree remains suitable throughout, can not take place excessively oppression or press the not enough problem. The spring connects the pressing part and the pressing rod together, so that a dynamic self-adjusting stroke is formed between the pressing rod and the pressing part, when the pressing head contacts and presses the conveying pipe, the supporting force reversely jacks the pressing head, so that the spring is compressed, and the pressing effect on the pipe wall of the conveying pipe is kept appropriate and has self-adaptability and real-time performance.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. A device for detecting fluid cavities in infusion tubes comprises a device body and is characterized in that the device body comprises a workbench, a detection assembly and a workpiece fixing assembly, the detection assembly and the workpiece fixing assembly are both arranged on the surface of the same side of the workbench,

the detection component is provided with a workpiece placing position which is of a concave structure, the workpiece to be tested is placed in the workpiece placing position,

the workpiece fixing assembly comprises a pressing rod, a spring and a pressing part, the pressing rod is of a long rod structure capable of moving linearly in a reciprocating mode along the length direction of the pressing rod, the pressing rod is connected with the pressing part through the spring, the pressing part is provided with an end face, and a pressing head protruding from the pressing rod is convenient to clamp the workpiece to place a clamping position.

2. The device for detecting fluid cavitation in an infusion tube as recited in claim 1, wherein the pressure rod is connected to the spring by an adjusting bolt.

3. The fluid cavitation detection device as claimed in claim 1, wherein the height of the protrusion of the lower pressure head is less than the depth of the workpiece placement block.

4. The apparatus for detecting the fluid void in an infusion tube as claimed in claim 1, wherein the raised surface of the lower pressing head is a concave structure recessed upwards, and the concave structure is a concave structure with an arc-shaped inner surface.

5. The device for detecting fluid cavitation in an infusion tube according to claim 1, wherein the detection assembly employs an ultrasonic bubble detection sensor.

6. The fluid cavitation detection device for the fluid in the infusion tube according to claim 1, wherein the workpiece fixing component comprises a component base, a guide rail and a slide block, the guide rail is vertically fixed on the component base, the slide block is connected with the guide rail in a sliding way,

the pressing part is fixedly connected with the sliding block.

7. The fluid cavity detection device inside the infusion tube as claimed in claim 6, wherein the workpiece fixing component comprises a handle and a connecting piece, the lower end of the pressure lever is connected with the pressing part through the spring, the upper end of the pressure lever is connected with the handle through the connecting piece in a rotating manner,

the handle is rotatably connected with the assembly base.

8. The fluid cavitation sensing device as recited in claim 7, wherein the assembly base has a flat surface on which the guide and an assembly holder are disposed;

the subassembly support has two spaced apart otic placodes, is first otic placode and second otic placode respectively, be equipped with on the second otic placode and be convenient for the through-hole that the depression bar passed, first otic placode rotates and connects the handle.

9. The apparatus for detecting the fluid cavity in the infusion tube as claimed in claim 8, wherein a sleeve is disposed on a side of the second ear plate facing the pressure lever, the sleeve covers the through hole of the second ear plate, and the pressure lever is rotatably connected to the connecting member after passing through the sleeve and the through hole of the second ear plate.

10. The device for detecting the cavitation of a fluid in an infusion tube according to any one of claims 1 to 9, wherein the workbench has a placement groove, and the vertical projection of the lower pressure head is positioned in the placement groove;

the placing groove penetrates through the surfaces of two opposite sides of the workbench, and the placing groove is communicated with one side edge of the workbench.

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