Pressure limit testing device for wet film dialyzer

Abstract

The utility model provides a pressure limit testing device for a wet film dialyzer, which can accurately obtain an instant pressure value when the dialyzer is exploded in an explosion testing process of the dialyzer and provide a basis for accurate analysis and reason judgment of problems, and comprises a pressure limit testing box, an air source pipeline assembly and a testing assembly, the top of the pressure limit test box is provided with a turnover dialysate port quick plugging joint, one side surface of the pressure limit test box is provided with a side door, and the side door is provided with a blood port artery connecting pipe which is led outwards; a flip type transparent window is arranged on the front surface of the pressure limit test box; the air source pipeline assembly is connected with the blood port artery connecting pipe, and an electromagnetic valve and a pressure sensor are arranged on the air source pipeline assembly; the test assembly is electrically connected with the electromagnetic valve and the pressure sensor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of wet membrane dialyzer detection, and particularly relates to a wet membrane dialyzer pressure limit testing device. BACKGROUND

[0002] In the production process of the dialyzer, the quality of glue injection and the quality of ultrasonic welding are detected by a dialyzer explosion test method. In the dialyzer explosion test process, when the gas pressure value gradually increases, the pressure value of the dialyzer instantaneous explosion cannot be captured by the eyes, and the pressure value decreases to the minimum after the dialyzer explosion. This increases the difficulty and uncertainty of finding the reason for the dialyzer explosion, which is time-consuming and laborious. UTILITY MODEL CONTENT

[0003] The utility model aims to provide a wet membrane dialyzer pressure limit testing device, which can accurately obtain the instantaneous pressure value of the dialyzer explosion in the dialyzer explosion test process, and provide a basis for accurate analysis of the problem and judgment of the reason.

[0004] The embodiment of the utility model is implemented as follows:

[0005] A wet membrane dialyzer pressure limit testing device comprises a pressure limit testing box, a gas source pipeline assembly and a testing assembly, the top of the pressure limit testing box is provided with a reversible dialysate port quick sealing joint, one side of the pressure limit testing box is provided with a side door, the side door is provided with a blood port artery connecting pipe leading outwards, the front of the pressure limit testing box is provided with a flip type transparent window, the gas source pipeline assembly is connected with the blood port artery connecting pipe, the gas source pipeline assembly is provided with an electromagnetic valve and a pressure sensor, and the testing assembly is electrically connected with the electromagnetic valve and the pressure sensor.

[0006] In the preferable embodiment of the utility model, the top of the pressure limit testing box is provided with a rectangular opening and a first sliding groove, the rectangular opening is located at the top center of the pressure limit testing box, the first sliding groove is located at both ends of the rectangular opening, the first sliding groove is provided with a sliding lock, the rectangular opening is provided with a flip page, both ends of the flip page are provided with silent damping rotating shafts, one side of the flip page is provided with a second sliding groove, the second sliding groove is provided with a fixed dialysate port quick sealing joint and a sliding dialysate port quick sealing joint, and the other side of the flip page is provided with a locking clamping groove, and the opening surface of the locking clamping groove faces the sliding lock.

[0007] In the preferable embodiment of the utility model, the dialysate port quick sealing joint comprises a connecting seat, a plug seat and a connecting cover, the bottom of the connecting seat is fixedly connected or slidably connected with the second sliding groove; the plug seat sleeve is arranged on the connecting seat, the top of the plug seat is provided with a plug, and the plug is externally provided with external threads; one end of the connecting cover is provided with first internal threads, the first internal threads are matched with the external threads of the dialysate port, the other end of the connecting cover is provided with second internal threads, and the second internal threads are matched with the external threads of the plug seat; a sealing ring is arranged between the first internal threads and the second internal threads of the connecting cover.

[0008] In the preferable embodiment of the utility model, the plug seat is further provided with a twist handle.

[0009] In the preferable embodiment of the utility model, the bottom of the flip transparent window is provided with a hinge connected with the pressure limit test box, and the side of the flip transparent window is provided with a clamping block matched with the pressure limit test box body.

[0010] In the preferable embodiment of the utility model, the gas source pipeline assembly comprises a gas source, an air pressure regulator, a pressure sensor and an electromagnetic valve connected in sequence.

[0011] In the preferable embodiment of the utility model, the test assembly comprises a paperless recorder and an electrical control box, and the control cable of the electrical control box is connected with the gas source, the air pressure regulator and the electromagnetic valve.

[0012] In the preferable embodiment of the utility model, the electrical control box is provided with a digital pressure gauge, a time relay, an operation indicator lamp, a buzzer and a switch which are electrically connected with the controller respectively.

[0013] The utility model has the advantages of the following:

[0014] The wet membrane dialyzer pressure limit test device in the embodiment is provided with a pressure limit test box, and the pressure test is carried out in a closed environment, so that the test personnel can be prevented from being injured by plastic fragments when the dialyzer bursts instantaneously; the dialysate quick sealing joint capable of being turned over is arranged on the top of the pressure test box, the wet membrane dialyzer can be assembled outside the box body, and air leakage during assembly can be avoided; the dialysate quick sealing joint can be quickly adjusted in position, different specifications of wet membrane dialyzers can be quickly replaced with the joint to complete sealing; the connecting pipe connected with the blood outlet artery is arranged on the side door, the connecting pipe is connected to the gas source pipeline, the sealing blood cover is arranged on the blood inlet vein at the other end of the wet membrane dialyzer, when the test assembly starts the gas source pipeline assembly, the test assembly can quickly and accurately acquire and record the instantaneous pressure value of the wet membrane dialyzer when the wet membrane dialyzer bursts, the test efficiency is high, the structure is simple, the cost is low, and the utility model is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained from the drawings without creative labor.

[0016] Figure 1 The line and pipe connection schematic diagram of the wet membrane dialyzer pressure limit testing device of the embodiments of the present application;

[0017] Figure 2 The structure schematic diagram of the pressure limit testing box of the wet membrane dialyzer pressure limit testing device of the embodiments of the present application when the wet membrane dialyzer is assembled;

[0018] Figure 3 The dialysate port quick plugging joint structure schematic diagram of the embodiments of the present application;

[0019] Figure 4 The control line schematic diagram of the wet membrane dialyzer pressure limit testing device of the embodiments of the present application;

[0020] Figure 5 The dialysate port quick plugging joint structure schematic diagram of the second embodiments of the present application;

[0021] Figure 6 The wet membrane dialyzer pressure limit testing device use flow chart of the embodiments of the present application.

[0022] Icon: pressure limit testing box 1; rectangular opening 101; first sliding chute 102; sliding lock 103; flip page 11; mute damping pivot 111; second sliding chute 112; locking clamping groove 113; dialysate port quick plugging joint 12; connecting seat 121; plug seat 122; connecting cover 123; locking screw 124; plug 125; twist handle 126; first internal thread 127; second internal thread 128; sealing ring 129; extension pipe section 120; flip cover type transparent window 13; side door 14; blood port artery connecting pipe 15; air source pipe assembly 2; electromagnetic valve 21; pressure sensor 22; air source 23; air pressure regulator 24; testing assembly 3; paperless recorder 31; electrical control box 32; controller 321; digital display pressure gauge 322; time relay 323; running indicator light 324; buzzer 325; switch 326. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0025] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0026] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0027] In addition, the terms "horizontal", "vertical", "overhang", etc. do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0028] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] First embodiment

[0030] Please see Figures 1-4 The present embodiment provides a wet membrane dialyzer pressure limit test device, which comprises a pressure limit test box 1, an air source pipeline assembly 2 and a test assembly 3. The wet membrane dialyzer is assembled and placed in the pressure limit test box 1 to complete the test, which is convenient to use and can avoid injuring the test personnel. The test assembly 3 can capture the instantaneous pressure value when the dialyzer bursts, save and display on the screen. The present embodiment uses a pressure sensor and a recorder to synchronously display and save the real-time pressure value. When the dialyzer bursts instantaneously, the maximum value displayed by the recorder in a graphical manner is the pressure value at the time of bursting. It has the advantages of being visual, high efficiency, high reliability, low cost, simple structure, good performance, convenient to use and the like.

[0031] A reversible turning page 11 is arranged on the top of the pressure limit test box 1, and a dialysate port quick sealing joint 12 is arranged on the turning page 11, which is used to fixedly connect and seal the dialysate inlet and outlet of the wet membrane dialyzer. After being connected and checked, it is turned into the pressure test box.

[0032] A flip type transparent window 13 is arranged on the front of the pressure limit test box 1, and a side door 14 is arranged on one side of the pressure limit test box 1, and a blood port arterial connection pipe 15 is arranged on the side door 14.

[0033] When the dialysate inlet and outlet of the wet membrane dialyzer are fixed, the flip type transparent window 13 is opened, the blood port arterial end port of the wet membrane dialyzer is sealed and connected with the blood port arterial connection pipe 15, and the blood port arterial connection pipe 15 is generally sealed, without improvement in structure, which can ensure that the gas path can pass to the wet membrane dialyzer, and the connection pipe and the blood port arterial end port can be sealed. The other end of the wet membrane dialyzer is assembled with a sealing blood cover to ensure that the blood port venous end port is in a sealed state.

[0034] Specifically, a rectangular opening 101 and a first sliding groove 102 are arranged on the top of the pressure limit test box 1. The rectangular opening 101 is located at the center of the top of the pressure limit test box 1 and is used to assemble the turning page 11. The first sliding groove 102 is located at both ends of the rectangular opening 101, and a sliding lock 103 is assembled in the first sliding groove 102. When the wet membrane dialyzer is assembled on the turning page 11 and turned into the pressure test box, the sliding lock 103 is inserted and locked into the locking slot.

[0035] The rectangular opening 101 is equipped with a flip page 11, both ends of the flip page 11 are provided with a mute damping rotating shaft 111, the mute damping rotating shaft 111 is used to flip under the action of external force, instead of free flipping. One side of the flip page 11 is provided with a second sliding groove 112, the second sliding groove 112 is equipped with a fixed dialysate port quick sealing connector and a sliding dialysate port quick sealing connector, which are used to seal the dialysate inlet and outlet of the wet membrane dialyzer. The other side of the flip page 11 is provided with a locking slot 113, the opening of the locking slot 113 faces the sliding lock 103. The structure of the locking slot 113 can be a simple circular groove structure, or a slightly complex locking slot with a spring, a locking piece and the like. In this embodiment, the specific structure of the locking slot and the sliding lock is not limited, as long as the fixing effect between the flip page and the box can be achieved. Specifically, the locking slot 113 can be arranged at the corresponding positions of the four corners of the flip page 11, so as to prevent the flip page 11 from being lifted during the test.

[0036] Further, the dialysate port quick sealing connector 12 in this embodiment is provided with two types, one is a fixed sealing connector, and the other is a sealing connector that can slide in the second sliding groove 112. The two types of connectors have the same structure, and the difference lies in the different connection seats.

[0037] The dialysate port quick sealing connector 12 includes a connection seat 121, a plug seat 122 and a connection cover 123.

[0038] The connection seat 121 is a T-shaped column, the bottom of the connection seat 121 is fixedly or slidably connected with the second sliding groove 112, wherein the bottom of the connection seat 121 of the slidable sealing connector is further equipped with a locking screw 124, and correspondingly, a strip-shaped slot hole with a diameter corresponding to the locking screw 124 is arranged at the bottom of the second sliding groove 112, so that the locking screw 124 can slide in the second sliding groove 112 and achieve the locking effect.

[0039] The plug seat 122 is sleeved on the connection seat 121, which can be threadedly connected or interference connected, the top of the plug seat 122 has a smaller diameter than the bottom, and the cross section also presents a T shape, the plug seat 122 is provided with a plug 125 at the top, the bottom of the plug 125 is clamped with the plug seat 122, so as to facilitate replacement of the plug 125, and the plug 125 is externally provided with external threads. The plug seat 122 is further provided with a twisting handle 126.

[0040] The connecting cover 123 is a cover with internal through hole and different threads, one end of which is provided with a first internal thread 127 matched with the external thread of the dialysate port, and the other end of which is provided with a second internal thread 128 matched with the external thread of the plug seat 122; the first internal thread 127 and the second internal thread 128 of the connecting cover 123 are provided with a sealing ring 129 therebetween.

[0041] The connecting mode of the dialysate port quick plugging joint 12 and the dialysate inlet and outlet of the wet membrane dialyzer is as follows:

[0042] The first internal thread 127 end of the connecting cover 123 is screwed into the dialysate port for connection, after the connection is completed; the plug seat 122 is further rotated by rotating the handle 126, and the plug 125 on the plug seat 122 moves towards the dialysate port during the rotation, thereby plugging the dialysate port, and the sealing ring 129 is used to enhance the sealing effect.

[0043] For detection of wet membrane dialyzers of different specifications, the connecting seat 121 and the plug seat 122 in the embodiment are standard parts made of metal or alloy, and the plug 125 and the connecting cover 123 can be replaced with plugs 125 of different diameters and connecting covers 123 of different inner diameters according to wet membrane dialyzers of different specifications.

[0044] The bottom of the flip transparent window 13 is provided with a hinge connected with the pressure limit test box 1, and the side of the flip transparent window 13 is provided with a clamping block matched with the box body of the pressure limit test box 1, so as to facilitate opening and closing. The clamping block of the flip transparent window 13 and the clamping groove structure on the box body are not limited in shape, and any opening and clamping structure can be used. The flip transparent window 13 in the embodiment adopts a PVC plate with high strength and high transparency, which can meet the testing requirements and is relatively low in cost if replaced.

[0045] The gas source pipeline assembly 2 is connected with the blood port arterial connecting pipe 15, and the gas source pipeline assembly 2 is provided with an electromagnetic valve 21 and a pressure sensor 22. The test assembly 3 is electrically connected with the electromagnetic valve 21 and the pressure sensor 22. The electromagnetic valve 21 is used to adjust the air injection amount of the wet membrane dialyzer, and the pressure sensor 22 is used to obtain the pressure value of the gas source pipeline assembly 2 and transmit the pressure value to the test assembly 3 for recording and saving.

[0046] The air source pipeline assembly 2 comprises an air source 23, an air pressure regulator 24, a pressure sensor 22 and a solenoid valve 21 connected in sequence. The test assembly 3 comprises a paperless recorder 31 and an electrical control box 32, and the control cable of the electrical control box 32 is connected to the air source 23, the air pressure regulator 24 and the solenoid valve 21. The electrical control box 32 is provided with a digital pressure gauge 322, a time relay 323, an operation indicator 324, a buzzer 325 and a switch 326 electrically connected to a controller 321 respectively.

[0047] Please refer to Figure 6 , the use mode of the wet membrane dialyzer pressure limit test device is as follows:

[0048] The two dialysate port quick sealing joints 12 are respectively installed on the dialysate inlet and outlet of the wet membrane dialyzer, and the wet membrane dialyzer is placed into the pressure limit test box 1 by rotating the turnover page 11;

[0049] The movable dialysate port quick sealing joint 12 is further fixed on the turnover page 11 by rotating the locking screw 124, and the sliding lock 103 is pushed to the locking slot 113 to fix the turnover page 11;

[0050] The flip transparent window 13 is opened, and the blood port arterial connecting pipe 15 on the side door 14 is sealingly connected to the blood port arterial port of the wet membrane dialyzer; the other end of the wet membrane dialyzer is assembled with a sealing blood cover.

[0051] The air source 23 pipeline assembly 2 and the test assembly 3 are connected, the start button is pressed, the gas pressure value gradually increases within the set time, and the real-time pressure value is transmitted to the recorder through the pressure sensor 22, the real-time pressure value is recorded and saved, and the display is displayed on the screen. When the dialyzer instantaneously explodes, the pressure value instantaneously decreases to the minimum, at which time the recorder remembers and saves the instantaneous pressure value, which is displayed on the screen, and the buzzer alarms at the same time. The operator can directly see the pressure value at the time of explosion with his eyes, which provides an important basis for finding the problem of the dialyzer. The efficiency and the accuracy of problem judgment and reason finding are greatly improved.

[0052] Second embodiment

[0053] Please refer to Figure 5 , the wet membrane dialyzer pressure limit test device of the embodiment is similar to the first embodiment in structure, and the difference is that, in order to further strengthen the sealing effect, an extension pipe section 120 can be further provided on the plug seat 122, and when the connecting cover 123 is screwed in, the extension pipe section 120 can further tighten the dialysate port, and the extension pipe section 120 extends at least above the sealing ring 129.

[0054] In summary, the wet membrane dialyzer pressure limit test device in the embodiment is provided with a pressure limit test box 1, and the pressure test is performed in a closed environment to avoid plastic fragments from hurting the tester when the dialyzer bursts instantaneously; a reversible dialysate quick sealing joint is arranged on the top of the pressure test box, the wet membrane dialyzer can be assembled outside the box body to avoid air leakage during assembly; the dialysate quick sealing joint can be quickly adjusted in position, and different specifications of the wet membrane dialyzer can quickly replace the joint to complete sealing; a connecting pipe connected with the arterial blood port is arranged on the side door 14, the connecting pipe is connected to the gas source 23 pipeline, a sealing blood cover is arranged on the venous blood port at the other end of the wet membrane dialyzer, when the test assembly 3 starts the gas source 23 pipeline assembly 2, the test assembly 3 can quickly and accurately obtain and record the instantaneous pressure value of the wet membrane dialyzer when it bursts, the test efficiency is high, the structure is simple, the cost is low, and the use is convenient.

[0055] The specification describes examples of embodiments of the present application and does not mean that all possible forms of the present application are described and explained. It should be understood that the embodiments in the specification can be implemented in various alternative forms. The drawings need not be drawn to scale; some features can be enlarged or reduced to show details of specific components. The specific structure and functional details disclosed should not be interpreted as a limiting explanation, but only as a representative basis for teaching those skilled in the art to implement the present application in various forms. Those skilled in the art should understand that the features described with reference to any one drawing and description can be combined with the features described in one or more other drawings to form embodiments that are not explicitly described or explained. The combined features of the description provide representative embodiments for typical applications. However, various combinations and variations of features consistent with the teachings of the present application can be used as needed for specific applications or implementations.

[0056] The above only describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pressure limit testing device for a wet membrane dialyzer, characterized in that, include The pressure limit test chamber has a flip-up dialysate inlet quick-sealing connector on the top, a side door on one side of the pressure limit test chamber, and a blood vessel artery connection tube extending outward from the side door; the front of the pressure limit test chamber has a flip-top transparent window. A gas supply pipeline assembly, which is connected to the blood vessel artery connection tube, is equipped with a solenoid valve and a pressure sensor. A test assembly, which is electrically connected to the solenoid valve and the pressure sensor.

2. The pressure limit testing device for a wet membrane dialyzer according to claim 1, characterized in that, The pressure limit test chamber has a rectangular opening and a first sliding groove at its top. The rectangular opening is located at the center of the top of the pressure limit test chamber, and the first sliding groove is located at both ends of the rectangular opening. A sliding lock is installed in the first sliding groove. A flip-up page is provided inside the rectangular opening, and a silent damping rotating shaft is provided at both ends of the flip-up page. A second sliding groove is provided on one side of the flip-up page, and a quick-sealing connector for fixing the dialysate port and a quick-sealing connector for sliding the dialysate port are installed in the second sliding groove. A locking slot is provided on the other side of the flip-up page, and the opening of the locking slot faces the sliding lock.

3. The pressure limit testing device for a wet membrane dialyzer according to claim 2, characterized in that, The quick-sealing connector for the dialysis fluid inlet includes: A connecting seat, the bottom of which is fixedly or slidably connected to the second sliding groove; A plug seat, wherein the plug seat is sleeved on the connecting seat, the top of the plug seat is provided with a plug, and the plug is provided with an external thread; A connecting cap is provided with a first internal thread at one end, which matches the external thread of the dialysate port; a second internal thread is provided at the other end of the connecting cap, which matches the external thread of the plug seat; a sealing ring is provided between the first internal thread and the second internal thread of the connecting cap.

4. The pressure limit testing device for a wet membrane dialyzer according to claim 3, characterized in that, The plug seat is also equipped with a twisting handle.

5. The pressure limit testing device for a wet membrane dialyzer according to claim 3, characterized in that, The bottom of the flip-top transparent window is provided with a hinge that connects to the pressure limit test chamber, and the side of the flip-top transparent window is provided with a locking block that engages with the body of the pressure limit test chamber.

6. The pressure limit testing device for a wet membrane dialyzer according to claim 1, characterized in that, The gas source pipeline assembly includes a gas source, an air pressure regulator, a pressure sensor, and a solenoid valve connected in sequence.

7. The pressure limit testing device for a wet membrane dialyzer according to claim 6, characterized in that, The test components include a paperless recorder and an electrical control box, the control cable of which is connected to the air source, air regulator and solenoid valve.

8. The pressure limit testing device for a wet membrane dialyzer according to claim 7, characterized in that, The electrical control box contains a digital display voltage regulator, a time relay, a running indicator light, a buzzer, and a switch, all of which are electrically connected to the controller.

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