CN213068111U - Leak hunting device on blood way pipe production water line - Google Patents

Abstract

The utility model relates to a blood way pipe technical field discloses a device that leaks hunting on blood way pipe production water line, include: the blood pressure measuring device comprises a first sensor for collecting a first air pressure value in a first blood vessel, a second sensor for collecting a second air pressure value in a second blood vessel, an air supply mechanism for respectively supplying air to the first blood vessel and the second blood vessel, a first platform provided with a first slide rail, a second platform arranged on the first slide rail in a sliding manner, and a first driving mechanism for driving the second platform to switch between an air supply position and a disconnection position in a sliding manner; when the second platform is driven to the air supply position by the first driving mechanism, the air supply mechanism is connected with the first blood path pipe through the first sleeve pipe, and the air supply mechanism is connected with the second blood path pipe through the second sleeve pipe. The utility model discloses a device leaks hunting simultaneously the atmospheric pressure reduction volume of two blood way pipes, can eliminate the influence of temperature to the result of leaking hunting effectively, improves the accuracy of leaking hunting of blood way pipe.

Description

Leak hunting device on blood way pipe production water line

Technical Field

The utility model relates to a blood way pipe technical field especially relates to a device that leaks hunting on blood way pipe production water line.

Background

Blood line tubes, also known as hemodialysis lines, for hemodialysis treatment generally include a line and connectors on either side of the line.

When production is carried out on a production line, a leakage detection station for detecting leakage of the blood road pipe needs to be arranged so as to ensure that the air tightness of the produced blood road pipe meets the requirement. In the leak detection station, a plurality of blood path tubes are regularly arranged on a conveyor belt, and the conveyor belt moves along the flowing direction of the production line.

In the prior art, when the air tightness of a blood path tube is detected, the blood path tube to be detected is generally detected one by one, and the specific method comprises the following steps: the method comprises the steps of filling gas into a blood vessel to be detected, sealing the blood vessel for a period of time, calculating the variation of the air pressure in a single blood vessel in the period of time, comparing the variation with a preset pressure drop threshold, and determining that the blood vessel is failed if the air pressure reduction of the blood vessel is greater than the pressure drop threshold.

However, the conventional method has a leak detection error of about 10%, that is, 10% of the blood vessels judged to be failed belong to qualified products. This is because the blood line tube is made of a soft material, and its actual volume is enlarged by the influence of inflation expansion when inflated, resulting in a decrease in the gas pressure in the blood line tube, and an additional pressure drop exists, resulting in inaccurate measurement.

In the prior art, when a constant pressure drop threshold value is used for testing blood vessels produced at different temperatures, errors are inevitably generated due to different expansion coefficients of the blood vessels. Meanwhile, because the expansion coefficient of the blood circuit tube is greatly influenced by the ambient temperature, it is difficult to define the pressure drop threshold value at each temperature, and this error is difficult to eliminate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: provides a leakage detection device on a blood vessel production line with small leakage detection error.

In order to achieve the above object, the present invention provides a leakage detection device on a blood vessel production line, comprising a first sensor for collecting a first air pressure value in a first blood vessel, a second sensor for collecting a second air pressure value in a second blood vessel, an air supply mechanism for supplying air to the first blood vessel and the second blood vessel respectively, a first platform provided with a first slide rail, a second platform slidably disposed on the first slide rail, and a first driving mechanism for driving the second platform to slide and switch between an air supply position and a disconnection position; the second platform is provided with a first sleeve and a second sleeve which are respectively connected with an air supply mechanism, the first sleeve and the second sleeve are arranged at intervals along a first horizontal direction, and the first slide rail extends along a second horizontal direction which is vertical to the first horizontal direction; when the second platform is in the open position: a gap is formed between the first sleeve and the first blood path pipe, and a gap is formed between the second sleeve and the second blood path pipe; when the second platform is in the gas supply position: the air supply mechanism passes through first sleeve pipe with first blood way union coupling, air supply mechanism passes through the second sleeve pipe with second blood way union coupling.

Further, the first sensor and the second sensor are provided in plurality.

Further, the device also comprises a controller; the controller is used for acquiring a first air pressure value and a second air pressure value, and respectively calculating a first air pressure reduction amount of the first air pressure value in a preset time and a second air pressure reduction amount of the second air pressure value in the preset time; the controller is further configured to calculate a difference between the first air pressure reduction amount and the second air pressure reduction amount according to the first air pressure reduction amount and the second air pressure reduction amount, and compare the difference with a preset value.

Furthermore, the device also comprises an alarm which is in communication connection with the controller; and when the difference value is larger than the preset value, the controller outputs an alarm signal to the alarm.

Further, still include the fixture that is used for centre gripping first blood way pipe and second blood way pipe respectively.

Further, the clamping mechanism includes: the first clamping block is connected to the first platform, and a first upper chuck and a second upper chuck are arranged on the first clamping block; the second clamping block is connected to the first platform and is arranged at intervals in the vertical direction with the first clamping block, and a first lower clamping head and a second lower clamping head are arranged on the second clamping block; the driving piece drives the first clamping block to be switched between the clamping position and the loosening position in a sliding mode along the preset direction; when the first clamping block is in a clamping position: the first upper clamping head and the first lower clamping head define a first clamping space for clamping a first blood path tube, and the second upper clamping head and the second lower clamping head define a second clamping space for clamping a second blood path tube.

Furthermore, the first clamping block and the second clamping block are respectively provided with a plurality of clamping blocks along the first horizontal direction.

Further, the device also comprises a second slide rail and a second driving mechanism; the second slide rail extends along the first horizontal direction, the first platform is arranged on the second slide rail in a sliding mode, and the second driving mechanism drives the first platform to slide along the second slide rail.

Furthermore, the second platforms and the first slide rails are provided with a plurality of second platforms and a plurality of first slide rails in one-to-one correspondence, the plurality of second platforms are arranged at intervals along the first horizontal direction, and the plurality of first slide rails are arranged at intervals along the first horizontal direction.

Furthermore, the first sleeves and the second sleeves are provided with a plurality of sleeves, the plurality of first sleeves are arranged on the second platform at intervals along the first horizontal direction, the plurality of second sleeves are arranged on the second platform at intervals along the first horizontal direction, and one second sleeve is arranged between every two adjacent first sleeves.

Compared with the prior art, the utility model, its beneficial effect lies in:

the utility model discloses a device leaks hunting simultaneously the atmospheric pressure reduction volume of two blood way pipes, can eliminate the influence of temperature to the result of leaking hunting effectively, improves the accuracy of leaking hunting of blood way pipe. Specifically, during leak detection, it is assumed that leakage of an approximate degree of two blood vessels occurs as a small probability event, and leak detection of the two blood vessels is performed simultaneously, and the two blood vessels are respectively referred to by the other blood vessel. Because the two blood road pipes are positioned on the same production line, the temperature is close, the expansion coefficients are close, if one blood road pipe or two blood road pipes are unqualified products, the difference is obviously abnormal when the difference is reflected, and a worker continuously tests the two abnormal blood road pipes to judge the unqualified products, so that the leakage detection is accurate.

Drawings

Fig. 1 is a perspective view of a leak detection device on a blood vessel production line according to an embodiment of the present invention.

Fig. 2 is a front view of a leak detection device on a blood vessel production line according to an embodiment of the present invention.

Fig. 3 is a plan view of a leak detection device on a blood vessel production line according to an embodiment of the present invention.

Fig. 4 is a left side view of a leak detection device on a blood vessel production line according to an embodiment of the present invention.

Fig. 5 is an enlarged view of a portion a in fig. 1 of a leak detection device on a blood vessel production line according to an embodiment of the present invention.

Fig. 6 is an enlarged view of a portion B in fig. 3 of a leak detection device on a blood vessel production line according to an embodiment of the present invention.

Fig. 7 is an enlarged view of the C point in fig. 4 of the leak detection device on the blood vessel production line according to the embodiment of the present invention.

In the figure, 11, the first blood line tube; 12. a second blood line tube; 2. an air supply mechanism; 3. a first platform; 31. a first slide rail; 4. a second platform; 41. a first sleeve; 42. a second sleeve; 5. a first drive mechanism; 6. a clamping mechanism; 61. a first clamping block; 611. a first upper chuck; 62. a second clamping block; 621. a first lower chuck; 63. a drive member; 7. a second slide rail; 8. a second drive mechanism.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Please refer to fig. 1, 4-7, an embodiment of the present invention discloses a leakage detecting device on a blood vessel production line, for detecting leakage of the blood vessel on the production line, wherein, on the production line, a first blood vessel 11 and a second blood vessel 12 are the same and are arranged on a conveyor belt at the leakage detecting station at intervals, the conveyor belt moves along a first horizontal direction, and the leakage detecting device comprises: the first sensor for gathering the first air pressure value in the first blood way pipe 11, the second sensor for gathering the second air pressure value in the second blood way pipe 12, the air supply mechanism 2 for supplying air to the first blood way pipe 11 and the second blood way pipe 12 respectively, the first platform 3 provided with the first slide rail 31, the second platform 4 arranged on the first slide rail 31 in a sliding manner, and the first driving mechanism 5 for driving the second platform 4 to be switched in a sliding manner between an air supply position and a disconnection position. The second platform 4 is provided with a first sleeve 41 and a second sleeve 42 which are respectively connected with the air supply mechanism 2, the first sleeve 41 and the second sleeve 42 are arranged at intervals along a first horizontal direction, and the first slide rail 31 extends along a second horizontal direction which is vertical to the first horizontal direction. When the second platform 4 is in the open position: a gap is formed between the first sleeve 41 and the first blood path tube 11, and a gap is formed between the second sleeve 42 and the second blood path tube 12; when the second platform 4 is in the gas supply position: air feed mechanism 2 passes through first sleeve 41 with first blood way pipe 11 is connected, air feed mechanism 2 passes through second sleeve 42 with second blood way pipe 12 is connected to in air feed mechanism 2 is respectively to first blood way pipe 11 and second blood way pipe 12 air feed, and after the air feed, first blood way pipe 11 and second blood way pipe 12 carry out the pressurize, and at this moment, first sensor measures the initial value of first atmospheric pressure value in the predetermined time and the final value of first atmospheric pressure value in the predetermined time at least, and the second sensor measures the initial value of second atmospheric pressure value in the predetermined time and the final value of second atmospheric pressure value in the predetermined time at least. In order to ensure the accuracy of leak detection, the first blood path tube 11 and the second blood path tube 12 need to be filled with gas at a predetermined pressure to ensure that the pressure drop is sufficiently significant, the gas supply mechanism 2 respectively enables the initial pressure values in the first blood path tube 11 and the second blood path tube 12 to be the same, and the initial pressure value is sufficiently large to enable the pressure drop to be significant.

The leakage detection device of the embodiment can simultaneously detect the air pressure reduction of two blood vessels, effectively eliminate the influence of temperature on the leakage detection result and improve the leakage detection accuracy of the blood vessels. Specifically, before leakage detection, because the probability of product failure is small and the leakage degrees of the failed products are not completely consistent, the event that two blood vessels leak at the same time and the leakage degrees are similar is a small-probability event by default. When leakage is detected, the first sensor and the second sensor are used for simultaneously detecting leakage of the two blood path pipes, the difference between pressure drops of the two blood path pipes is calculated, namely the difference between the first air pressure reduction amount and the second air pressure reduction amount, because the two blood path pipes are positioned on the same production line, the temperature of the first blood path pipe 11 is the same as that of the second blood path pipe 12 at the moment, the expansion coefficient is the same, therefore, if one blood path pipe or the two blood path pipes are unqualified products, the difference is obviously abnormal, at least one of the two blood path pipes can be accurately detected to be leaked, and a worker continues to test the two blood path pipes with the abnormity, for example, the blood path pipes are soaked in water to observe bubbles so as to judge the unqualified products. Therefore, the leakage detection method of the embodiment comprehensively considers the reasons that errors are difficult to eliminate in the prior art, namely, expansion coefficients of the blood vessels are different at different temperatures, and further pressure drop thresholds for judging whether the blood vessels leak or not are different at different temperatures.

Specifically, in one embodiment, a first air pressure reduction amount and a second air pressure reduction amount are calculated by manual calculation, and a difference between the first air pressure reduction amount and the second air pressure reduction amount is further calculated.

Specifically, in another embodiment, the controller is used for automatically calculating the difference value to realize automatic leakage detection, and the embodiment further comprises a controller which is in communication connection with the first sensor and the second sensor respectively; the controller is used for acquiring a first air pressure value and a second air pressure value, and respectively calculating a first air pressure reduction amount of the first air pressure value in a preset time and a second air pressure reduction amount of the second air pressure value in the preset time; the controller is further configured to calculate a difference between the first air pressure reduction amount and the second air pressure reduction amount according to the first air pressure reduction amount and the second air pressure reduction amount, and compare the difference with a preset value.

Further, in an embodiment, when the controller is used for automatically calculating the difference value, the controller further comprises an alarm connected with the controller in a communication manner; when the difference value is larger than the preset value, the controller outputs an alarm signal to the alarm, and the alarm is started to remind a worker to process two blood vessels with abnormal difference values.

Specifically, in an embodiment, the difference is compared with a preset value, specifically, when the difference is greater than the preset value, at least one of the first blood path tube 11 and the second blood path tube 12 is an unqualified product; and when the difference value is smaller than the preset value, the first blood path pipe 11 and the second blood path pipe 12 are qualified products.

Specifically, in an embodiment, referring to fig. 5 to 6, since the plurality of blood vessels on the production line are arranged at intervals along the first horizontal direction, in order to increase the leak detection speed, the plurality of blood vessels on the production line are sequentially divided into the first blood vessel 11 and the second blood vessel 12, the plurality of first sensors and the plurality of second sensors are both arranged, and the plurality of first blood vessels 11 and the plurality of second blood vessels 12 are collected at the same time to perform the leak detection of the plurality of first blood vessels 11 and the plurality of second blood vessels 12, so as to increase the leak detection speed.

Specifically, in one embodiment, referring to fig. 1 to 7, as can be seen from fig. 6, protrusions are disposed on the outer edges of the first blood tube 11 and the second blood tube 12, in order to ensure the connection between the first blood tube 11 and the air supply mechanism 2 and the connection between the second blood tube 12 and the air supply mechanism 2, the embodiment further includes a clamping mechanism 6 for clamping the first blood tube 11 and the second blood tube 12, respectively, so that the first blood tube 11 and the second blood tube 12 do not move unexpectedly during the air supply and pressure holding leak detection. After the clamping mechanism 6 is arranged, when the second platform 4 is at the air supply position, the first blood path tube 11 is inserted into the first sleeve 41, the second blood path tube 12 is inserted into the second sleeve 42, and the first driving mechanism 5 provides a pressing force to the blood path tube direction for the second platform 4, so that the end surfaces of the first sleeve 41 and the second sleeve 42 are pressed against the corresponding protrusions, and the openings of the first sleeve 41 and the second sleeve 42 are isolated from the outside respectively.

Specifically, in one embodiment, referring to fig. 7, the clamping mechanism 6 includes: a first clamping block 61, a second clamping block 62, and a driving member 63; the first clamping block 61 is connected to the first platform 3, and a first upper clamping head 611 and a second upper clamping head are arranged on the first clamping block 61; the second clamping block 62 is connected to the first platform 3 and is arranged at an interval with the first clamping block 61 in the vertical direction, and a first lower clamping head 621 and a second lower clamping head are arranged on the second clamping block 62; the driving member 63 drives the first clamping block 61 to be switched between the clamping position and the loosening position in a sliding manner along a preset direction; when the first clamping block 61 is in the clamping position: the first upper jaw 611 and the first lower jaw 621 define a first clamping space for clamping the first blood tube 11, and the second upper jaw and the second lower jaw define a second clamping space for clamping the second blood tube 12.

Specifically, in one embodiment, referring to fig. 1 to 3 and fig. 5, the first clamping block 61 and the second clamping block 62 are respectively provided in a plurality along the first horizontal direction so as to clamp the plurality of first blood vessels 11 and the plurality of second blood vessels 12.

Specifically, in one embodiment, please refer to fig. 1 and 5, further comprising a second slide rail 7 and a second driving mechanism 8; the first platform 3 is slidably arranged on the second slide rail 7, and the second driving mechanism 8 drives the first platform 3 to slide along the second slide rail 7, so that the first sleeve 41 and the second sleeve 42 can move along with the conveyor belt, the conveyor belt does not need to be stopped during leak detection, and the normal production of a preorder station and a subsequent station is not affected. In the measurement of the present embodiment, the second driving mechanism 8 drives the first platform 3 to slide from the original position to the end position along the first horizontal direction at the same speed as the conveyor belt, and the second platform 4 is kept at the air supply position; after the measurement, when first platform 3 slided to the end position promptly, first actuating mechanism 5 drive second platform 4 switches to the disconnection position, and second actuating mechanism 8 drive first platform 3 reverse motion to primary position simultaneously to correspond next set of first blood way pipe 11 and second blood way pipe 12, and first actuating mechanism 5 drives second platform 4 once more and slides to the air feed position when primary position, ensures to carry out the leak hunting to all first blood way pipe 11 on the production water line and second blood way pipe 12.

Specifically, in an embodiment, referring to fig. 1 to 3, a plurality of second platforms 4 and a plurality of first slide rails 31 are provided, the plurality of second platforms 4 and the plurality of first slide rails 31 correspond to each other one by one, the plurality of second platforms 4 are disposed at intervals along the first horizontal direction, and the plurality of first slide rails 31 are disposed at intervals along the first horizontal direction so as to correspondingly measure the plurality of first blood vessels 11 and the plurality of second blood vessels 12.

Specifically, in an embodiment, referring to fig. 1 to 3, a plurality of first sleeves 41 and a plurality of second sleeves 42 are provided, the plurality of first sleeves 41 are spaced apart on the second platform 4 along the first horizontal direction, the plurality of second sleeves 42 are spaced apart on the second platform 4 along the first horizontal direction, and one second sleeve 42 is provided between two adjacent first sleeves 41.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A device that leaks hunting on blood way pipe production water line which characterized in that includes:

the blood pressure measuring device comprises a first sensor for collecting a first air pressure value in a first blood vessel, a second sensor for collecting a second air pressure value in a second blood vessel, an air supply mechanism for respectively supplying air to the first blood vessel and the second blood vessel, a first platform provided with a first slide rail, a second platform arranged on the first slide rail in a sliding manner, and a first driving mechanism for driving the second platform to switch between an air supply position and a disconnection position in a sliding manner;

the second platform is provided with a first sleeve and a second sleeve which are respectively connected with an air supply mechanism, the first sleeve and the second sleeve are arranged at intervals along a first horizontal direction, and the first slide rail extends along a second horizontal direction which is vertical to the first horizontal direction;

when the second platform is in the open position: a gap is formed between the first sleeve and the first blood path pipe, and a gap is formed between the second sleeve and the second blood path pipe;

when the second platform is in the gas supply position: the air supply mechanism passes through first sleeve pipe with first blood way union coupling, air supply mechanism passes through the second sleeve pipe with second blood way union coupling.

2. The leak detection device for use in a blood vessel production line according to claim 1, wherein a plurality of the first sensors and the plurality of the second sensors are provided.

3. The leak detection device on the blood vessel production line according to claim 1, further comprising a controller;

the controller is used for acquiring a first air pressure value and a second air pressure value, and respectively calculating a first air pressure reduction amount of the first air pressure value in a preset time and a second air pressure reduction amount of the second air pressure value in the preset time; the controller is further configured to calculate a difference between the first air pressure reduction amount and the second air pressure reduction amount according to the first air pressure reduction amount and the second air pressure reduction amount, and compare the difference with a preset value.

4. The leak detection device on the production line of the blood vessel pipe according to claim 3, further comprising an alarm communicatively connected to the controller;

and when the difference value is larger than the preset value, the controller outputs an alarm signal to the alarm.

5. The leak detection device for use in a blood vessel production line according to claim 1, further comprising a holding mechanism for holding the first blood vessel and the second blood vessel, respectively.

6. The leak detection device on the blood vessel production line according to claim 5, wherein the holding mechanism comprises:

the first clamping block is connected to the first platform, and a first upper chuck and a second upper chuck are arranged on the first clamping block;

the second clamping block is connected to the first platform and is arranged at intervals in the vertical direction with the first clamping block, and a first lower clamping head and a second lower clamping head are arranged on the second clamping block; and

a driving member driving the first clamping block to be slidingly switched between a clamping position and a loosening position along a preset direction;

when the first clamping block is in a clamping position: the first upper clamping head and the first lower clamping head define a first clamping space for clamping a first blood path tube, and the second upper clamping head and the second lower clamping head define a second clamping space for clamping a second blood path tube.

7. The leak detection device for use in a blood vessel production line according to claim 6, wherein a plurality of the first holding blocks and a plurality of the second holding blocks are provided in the first horizontal direction, respectively.

8. The leak detection device on the production line of the blood vessel according to claim 4, further comprising a second slide rail and a second driving mechanism;

the second slide rail extends along the first horizontal direction, the first platform is arranged on the second slide rail in a sliding mode, and the second driving mechanism drives the first platform to slide along the second slide rail.

9. The leak hunting device on the blood vessel production line according to claim 8, wherein a plurality of second platforms and a plurality of first slide rails are provided, the plurality of second platforms and the plurality of first slide rails are in one-to-one correspondence, the plurality of second platforms are disposed at intervals along the first horizontal direction, and the plurality of first slide rails are disposed at intervals along the first horizontal direction.

10. The device of claim 4, wherein the first sleeve and the second sleeve are provided in plurality, the first sleeves are spaced apart along the first horizontal direction on the second platform, the second sleeves are spaced apart along the first horizontal direction on the second platform, and one second sleeve is provided between two adjacent first sleeves.

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