Polymer viscosity testing device
By designing a polymer viscosity test device that includes heating and automated measurement, the problems of poor testing accuracy and inability to maintain constant temperature in the prior art are solved, and high-precision and efficient viscosity testing are achieved.
Patent Information
- Application Number
- CN202421248118.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The existing polymer viscosity testing device has poor testing accuracy and cannot keep the liquid in a constant temperature state, and the operation steps are cumbersome.
A polymer viscosity testing device is designed, including a heating mechanism and a testing mechanism. The heating mechanism keeps the liquid in a constant temperature state through a water bath and a heater, and the testing mechanism reduces human error through an automated measurement system and improves measurement accuracy.
The viscosity test of the liquid under constant temperature is realized, the accuracy and efficiency of the test are improved, and the operation steps are simplified.
Smart Images
Figure CN222800556U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical suture production, in particular to a polymer viscosity testing device. Background Art
[0002] Polydioxanone (PPDO) is a synthetic polymer used in the medical field. It is widely used in the preparation of medical materials and has excellent biocompatibility and degradability. The most common application is as a medical suture material, which is convenient for ligation, hemostasis, tissue suturing and other operations. It has a high safety factor and can be absorbed and metabolized by the human body.
[0003] During the production process, the viscosity of the polymer needs to be tested to ensure production quality. Usually, a certain amount of PPDO material is selected and dissolved in a liquid, and then the viscosity is measured multiple times by detecting the flow time of the liquid. However, the existing viscosity testing device requires manual calculation of the liquid flow time, the test accuracy is poor, and the liquid cannot be kept at a constant temperature all the time, and the operation steps are relatively cumbersome. Utility Model Content
[0004] The utility model aims to provide a polymer viscosity testing device to solve the problems of poor testing accuracy and inability to keep the liquid in a constant temperature state in the background technology.
[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0006] A polymer viscosity testing device comprises a workbench, wherein a mounting plate is fixedly arranged on the upper surface of the workbench by a plurality of bolts, a slide groove is provided on one side of the mounting plate, a screw is rotatably connected inside the slide groove, a slide plate is threadedly connected to the outer side of the screw rod, and a heating mechanism and a testing mechanism are also provided, wherein the heating mechanism is arranged on one side of the mounting plate for performing heating and constant temperature operation, and the testing mechanism is arranged above the heating mechanism for performing viscosity detection on PPDO material.
[0007] Preferably, the heating mechanism comprises a water bath fixedly mounted on the upper surface of the workbench, a heater being fixedly provided on one side of the water bath, a motor being mounted on the lower end of the water bath, an output end of the motor extending into the interior of the water bath and fixedly connected to a cleaning brush, the cleaning brush abutting against the inner wall of the water bath.
[0008] Preferably, the testing mechanism includes a main pipe, the lower end of which is connected to a first liquid storage ball, a timing ball, a capillary and a hanging liquid ball in sequence from top to bottom; a branch pipe is provided on one side of the main pipe, the lower end of which is connected to the hanging liquid ball; a side pipe is provided on one side of the branch pipe, the lower end of which is connected to a second liquid storage ball, and the second liquid storage ball is connected to the hanging liquid ball through a pipeline.
[0009] Preferably, support members are symmetrically arranged at the lower end of the workbench.
[0010] Preferably, a timer is provided on one side of the workbench.
[0011] Preferably, one end of the slide plate close to the testing mechanism is connected to a fastening pipe clamp, the fastening pipe clamp sleeve is arranged on the outside of the side pipe, and the fastening pipe clamp is fixedly connected to the side pipe by a fastening bolt.
[0012] Preferably, a cover is hingedly connected to the top of the water bath, and a sealing strip matching the water bath is provided on one side of the cover.
[0013] Preferably, a first liquid level sensor is installed below the first liquid storage ball, and a second liquid level sensor is installed below the timing ball, and both the first liquid level sensor and the second liquid level sensor are electrically connected to the timer.
[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0015] 1. The utility model is provided with a heating mechanism, and the water bath is heated by a heater, so that the water temperature can be kept at a constant temperature during the viscosity test. A motor is provided to drive a cleaning brush to clean the inner wall of the water bath to prevent scale from affecting the heating rate of the water bath. A pot cover is provided to prevent dust from entering the water bath when the water bath is idle.
[0016] 2. The utility model is provided with a testing mechanism to realize the measurement of solution flow time and automatic time processing, eliminating the subjective error of the user and achieving high measurement accuracy;
[0017] 3. The utility model is provided with a screw rod and a slide plate, so as to first fix the position of the test mechanism, and then place the test mechanism into the water bath, and then start the preheating and constant temperature test operation, which is convenient for operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of the utility model.
[0019] Figure 2 It is a structural schematic diagram of one side of the utility model.
[0020] Figure 3 It is a structural schematic diagram of the other side of the utility model.
[0021] Figure 4 It is a structural schematic diagram of the testing mechanism of the utility model.
[0022] Figure 5 For the utility model Figure 4 Enlarged view of point A in the middle.
[0023] Figure 6 It is a cutaway view of the front view of the utility model.
[0024] Notes on figure numbers: 101, workbench; 102, mounting plate; 103, slide; 104, slide plate; 105, support; 106, timer; 107, fastening pipe clamp; 200, heating mechanism; 201, water bath; 202, heater; 203, motor; 204, cleaning brush; 205, cover; 300, testing mechanism; 301, main pipe; 302, first liquid storage ball; 303, timing ball; 304, hanging liquid ball; 305, branch pipe; 306, side pipe; 307, second liquid storage ball; 308, first liquid level sensor; 309, second liquid level sensor. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0026] Example 1
[0027] In this embodiment, if Figure 1-Figure 6 As shown, a polymer viscosity testing device includes a workbench 101, a mounting plate 102 is fixedly arranged on the upper surface of the workbench 101 by a plurality of bolts, a slide groove 103 is provided on one side of the mounting plate 102, a screw is rotatably connected inside the slide groove 103, one end of the screw 104 extends to the outside of the mounting plate 102 and is fixedly connected to a handle, which is convenient for rotating the screw, thereby adjusting the height of the testing mechanism 300, a slide plate 104 is threadedly connected to the outside of the screw, and the slide plate 104 is slidably connected to the inner wall of the slide groove 103, and also includes a heating mechanism 200 and a testing mechanism 300, the heating mechanism 200 is arranged on one side of the mounting plate 102 for heating and constant temperature operation, the testing mechanism 300 is arranged above the heating mechanism 200 for viscosity testing of the PPDO material, before the polymer viscosity testing device is used, the PPDO material is first dissolved in a liquid to form a PPDO sample solution to be tested, the slide plate 104 cooperates with the fastening tube clamp 107 to fix the position of the testing mechanism 300, and then the heater 202 is started, so that the device enters a ready-to-use state;
[0028] Among them Figure 2 , Figure 3 and Figure 6As shown, the heating mechanism 200 includes a water bath 201 fixedly mounted on the upper surface of the workbench 101, and a water changing port is provided on one side of the water bath 202, so as to facilitate timely replacement and addition of water according to the water usage inside the water bath 202, thereby improving the working efficiency of the device. A heater 202 is fixedly provided on one side of the water bath 201, and the liquid inside the water bath 201 is heated to ensure the normal preheating and constant temperature measurement operation of the test mechanism 300. A motor 203 is installed at the lower end of the water bath 201. 03, the output end of the motor 203 extends to the inside of the water bath 201 and is fixedly connected with a cleaning brush 204. The water inside the water bath 201 will cause scale on the inner wall of the water bath 201 if it is heated for a long time. The cleaning brush 204 is convenient for quick cleaning and can reduce the waste of human resources. The cleaning brush 204 abuts against the inner wall of the water bath 201. An ultrasonic cleaner is connected to one side of the water bath 201, which is convenient for timely cleaning and maintenance of the components of the test mechanism 300 after the test is completed, so as not to affect the next use;
[0029] Among them Figure 2-Figure 5 As shown, the testing mechanism 300 includes a main pipe 301, and valves are provided at the tops of the main pipe 301, the branch pipe 305, and the side pipe 306. The lower end of the main pipe 301 is connected with a first liquid storage ball 302, a timing ball 303, a capillary tube, and a hanging liquid ball 304 in sequence from top to bottom. Through the capillary tube, the liquid will encounter resistance when it falls freely due to gravity. When the liquid flows in the pipeline, a part of work must be consumed to overcome the resistance. There is a formula relationship between the consumed energy and the pipeline size and time. Then, the viscosity of the polymer solution can be obtained according to the time and liquid volume, so as to understand the viscosity qualification of the polymer. One side of the main pipe 301 is provided with A branch pipe 305, the lower end of which is connected to the hanging liquid ball 304, a side pipe 306 is provided on one side of the branch pipe 305, the lower end of which is connected to a second liquid storage ball 307, the second liquid storage ball 307 is connected to the hanging liquid ball 304 through a pipeline, a certain volume of solution is injected into the hanging liquid ball 304 by the side pipe 306, and then the solution is absorbed by the main pipe 301 by the negative pressure structure, so that the liquid is sucked into the first liquid storage ball 302 through the capillary, and then the negative pressure is released to make the liquid flow downward naturally through the capillary under the action of gravity, and the viscosity of the material is measured according to the outflow speed of the PPDO solution in the capillary;
[0030] Among them Figure 1-Figure 3 As shown, a support member 105 is symmetrically arranged at the lower end of the workbench 101, and the support member 105 can be set as a support rod or a roller to support the device and facilitate movement;
[0031] Among them Figure 1-Figure 3As shown, a timer 106 is provided on one side of the workbench 101. The timer 106 can accurately know the time between a specific volume of PPDO material solution passing through two liquid level sensors under a specific temperature condition, and then calculate according to the liquid level drop time of a solution with a known viscosity, so as to understand the viscosity of the polymer;
[0032] Among them Figure 1 As shown, one end of the slide plate 104 close to the test mechanism 300 is connected with a fastening pipe clamp 107, which is sleeved on the outside of the side pipe 306. The fastening pipe clamp 107 is fixedly connected to the side pipe 306 by a fastening bolt, which is convenient for fixing the position of the side pipe 306. Since the main pipe 301, the branch pipe 305, and the side pipe 306 are an integrated structure, the main pipe 301 and the branch pipe 305 can be fixed, which is convenient for subsequent cleaning and replacement operations.
[0033] Among them Figure 5 As shown, a first liquid level sensor 308 is installed below the first liquid storage ball 302, and a second liquid level sensor 309 is installed below the timing ball 303. The first liquid level sensor 308 and the second liquid level sensor 309 are both electrically connected to the timer 106. Under the action of gravity, the solution sample flows downward inside the first liquid storage ball 302. When the liquid level passes through the first liquid level sensor 308, the first liquid level sensor 308 transmits a signal to the timer 106, so that the timer 106 performs a timing operation. When the liquid level passes through the position of the second liquid level sensor 309, the second liquid level sensor 309 transmits a signal to the timer 106, so that the timer 106 stops the timing operation. After multiple tests, the viscosity value can be calculated according to the pipe diameter and time.
[0034] Example 2
[0035] The difference from Example 1 is that Figure 2 , Figure 3 and Figure 6 As shown, a cover 205 is hinged on the top of the water bath 201, and the cover 205 is connected to the water bath 201 by a hinge. A sealing strip adapted to the water bath 201 is provided on one side of the cover 205, and the cover 205 can be rotatably placed on the top of the water bath 201, so that the interior of the water bath 201 remains closed to prevent dust from falling in, thereby improving the test effect.
[0036] When in use, first fix the position of the test mechanism 300 by tightening the pipe clamp 107, then rotate the screw so that the mechanism can smoothly enter the water bath 201, start the heater 202, and start the preheating operation. When the liquid in the water bath 201 reaches a certain temperature, it is kept at a constant temperature. A certain volume of solution is injected into the hanging liquid ball 304 by using the side pipe 306, and then the solution is absorbed by the main pipe 301 by using the negative pressure structure, so that the liquid is sucked into the first liquid storage ball 302 through the capillary, and then the negative pressure is released to allow the liquid to flow downward naturally through the capillary under the action of gravity. The viscosity of the polymer is measured according to the outflow speed of the solution in the capillary, and then it is determined whether the polymer meets the specifications.
[0037] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
Claims
1. A polymer viscosity testing device, comprising a workbench (101), a mounting plate (102) being fixedly arranged on the upper surface of the workbench (101) by a plurality of bolts, a slide groove (103) being provided on one side of the mounting plate (102), a screw being rotatably connected inside the slide groove (103), and a slide plate (104) being threadedly connected to the outer side of the screw; It is characterized in that It also includes a heating mechanism (200), which is arranged on one side of the mounting plate (102) and is used for performing a heating and constant temperature operation; A testing mechanism (300), wherein the testing mechanism (300) is arranged above the heating mechanism (200) and is used to perform viscosity testing on the PPDO material.
2. The polymer viscosity testing device according to claim 1, characterized in that: The heating mechanism (200) comprises a water bath (201) fixedly mounted on the upper surface of a workbench (101), a heater (202) being fixedly arranged on one side of the water bath (201), a motor (203) being mounted at the lower end of the water bath (201), an output end of the motor (203) extending into the interior of the water bath (201) and being fixedly connected to a cleaning brush (204), the cleaning brush (204) being in contact with the inner wall of the water bath (201).
3. The polymer viscosity testing device according to claim 1, characterized in that: The testing mechanism (300) comprises a main pipe (301), the lower end of which is connected in sequence from top to bottom to a first liquid storage ball (302), a timing ball (303), a capillary tube and a hanging liquid ball (304); a branch pipe (305) is provided on one side of the main pipe (301), the lower end of which is connected to the hanging liquid ball (304); a side pipe (306) is provided on one side of the branch pipe (305), the lower end of which is connected to a second liquid storage ball (307); and the second liquid storage ball (307) is connected to the hanging liquid ball (304) via a pipeline.
4. The polymer viscosity testing device according to claim 1, characterized in that: A support member (105) is symmetrically arranged at the lower end of the workbench (101).
5. The polymer viscosity testing device according to claim 1, characterized in that: A timer (106) is provided on one side of the workbench (101).
6. The polymer viscosity testing device according to claim 1, characterized in that: One end of the slide plate (104) close to the testing mechanism (300) is connected to a fastening pipe clamp (107), the fastening pipe clamp (107) is sleeved on the outside of the side pipe (306), and the fastening pipe clamp (107) is fixedly connected to the side pipe (306) via a fastening bolt.
7. The polymer viscosity testing device according to claim 2, characterized in that: A cover body (205) is hingedly connected to the top of the water bath pot (201), and a sealing strip matching the water bath pot (201) is provided on one side of the cover body (205).
8. The polymer viscosity testing device according to claim 3, characterized in that: A first liquid level sensor (308) is installed below the first liquid storage ball (302), and a second liquid level sensor (309) is installed below the timing ball (303). Both the first liquid level sensor (308) and the second liquid level sensor (309) are electrically connected to the timer (106).