An insertion-type testing device for flowable asphalt mixtures.

Abstract

This invention provides an insertion-type testing device for flowable asphalt mixtures, comprising a telescopic component, an insertion component, and a digital display. The second tube of the insertion component is divided into a sample chamber and a heat-conducting chamber by a cylindrical body. The guide tube in the sample chamber is used to contain the asphalt mixture, and the heat-conducting chamber maintains a stable temperature through a heat-conducting medium and a resistance wire. The connecting part of the telescopic component adjusts the detection depth and fixes the guide tube through a screw, and the guide tube is precisely positioned in conjunction with a first annular flange, a second annular flange, and a spring. A level sensor and a temperature sensor are used to monitor data and display it on the digital display, which is verified against the scale lines set on the outer wall of the guide tube. The device can be directly inserted into the mixture at the construction site to achieve in-situ, real-time detection. Its structure is detachable and easy to maintain, making it suitable for assessing the flowability of flowable asphalt mixtures and improving the efficiency of construction quality control.

Description

Technical Field

[0001] This utility model relates to the field of in-situ testing technology of asphalt mixtures, specifically to an insertion-type testing device for flowable asphalt mixtures. Background Technology

[0002] Traditional hot-mix asphalt (HMA) pavements have a limited service life (typically only 15-20 years), making them unsuitable for long-life pavement construction. Flowable asphalt (FMA), as a new generation of pavement material, has its core advantage in the fluidity of the binder. This characteristic not only reduces interference with the skeleton structure during construction and promotes particle interlocking to enhance rutting resistance, but also significantly reduces the internal porosity of the mixture (typically less than 1%) by filling the gaps in the skeleton. Simultaneously, it allows for independent design of the skeleton and binder, significantly improving the pavement's crack resistance, aging resistance, and durability, becoming a key technology for doubling pavement life.

[0003] However, the performance advantage of FMA (Fluorescent Mat) relies entirely on the precise control of the mortar's fluidity. Current assessment methods for this core characteristic have several problems: First, their applicability to the field is severely limited. Existing testing methods rely entirely on laboratory equipment (such as ovens and precision balances), with complex procedures and strict control of the experimental environment, making them unsuitable for direct application on construction sites. If a combination of on-site sampling and laboratory testing is used, uncontrollable errors can be introduced due to sample transportation and temperature changes, making real-time, in-situ monitoring of the construction process impossible and hindering dynamic control of construction quality. Second, low testing efficiency restricts construction progress. Traditional methods require multiple separate operations, including weighing, insulation, and testing, making the process cumbersome and time-consuming. A single test often takes several hours, severely interfering with continuous road paving construction and even causing delays. Third, there is resource waste and poor economic efficiency. Key components of existing devices (such as the conduit containing the mortar) are mostly fixed designs, making disassembly and cleaning difficult after testing, and preventing reuse. This not only increases testing costs but also leads to material waste due to frequent replacement of consumables. The aforementioned problems directly lead to the inability to effectively control the fluidity of FMA adhesive during the construction phase, greatly limiting the realization of its long service life advantage.

[0004] Therefore, developing a testing device for fluidized asphalt mixtures that is adaptable to the construction site environment, efficient, convenient, and reusable is an urgent problem that needs to be solved. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an insertion-type testing device for flowable asphalt mortar mixtures, including a telescopic component, an insertion component, and a digital display unit. This device is used to directly insert into the FMA mixture at the construction site to achieve in-situ, real-time monitoring of the flowability of the mortar, ensuring construction quality. Its portable design can significantly improve testing efficiency and minimize interference with the construction process.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An insertion-type testing device for flowing asphalt mixture includes: a telescopic assembly comprising a first tube and a connecting portion telescopically connected to the bottom of the first tube, the connecting portion being used to adjust the testing depth; an insertion assembly comprising a second tube detachably disposed below the connecting portion, the second tube having a cylindrical body disposed along its axial direction, the cylindrical body dividing the interior of the second tube into a sample chamber and a heat-conducting chamber; the sample chamber having an installation port detachably connected to the connecting portion at its upper part and an inlet for receiving asphalt mixture at its lower part, the sample chamber having a conduit for containing asphalt mixture inside, and the heat-conducting chamber having a through hole for receiving a heat-conducting medium on its side wall; and a digital display disposed above the first tube for displaying the temperature inside the second tube and the asphalt mixture level in the conduit.

[0008] According to one example, the heat-conducting chamber is provided with at least one resistance wire for heating the heat-conducting medium, and the resistance wire is connected to the digital display circuit.

[0009] According to one example, the lower part of the conduit is provided with a level sensor for monitoring the liquid level of the asphalt mixture inside the conduit, and the level sensor is connected to the circuit of the digital display unit.

[0010] According to one example, a temperature sensor is provided in the heat-conducting chamber, and the temperature sensor is connected to the digital display circuit for detecting the temperature of the heat-conducting medium.

[0011] According to one example, the connecting part includes a first screw and a second screw arranged vertically, and a retaining ring disposed between the first screw and the second screw; a threaded hole is formed at the bottom of the first tube body, and the first screw is threaded into the threaded hole to adjust the distance between the first tube body and the second tube body; a threaded section is formed on the inner wall of the mounting port, and the second screw is threaded into the mounting port; wherein the lower part of the second screw abuts against the upper part of the conduit to fix the axial position of the conduit.

[0012] According to one example, the upper inner wall of the sample chamber is provided with a first annular flange, and the lower inner wall is provided with a second annular flange. The bottom of the conduit abuts against the upper surface of the second annular flange, and the top of the conduit is flush with the lower surface of the first annular flange. The lower part of the second screw abuts against the upper surface of the first annular flange and against the top end face of the conduit, so that the conduit is confined between the first annular flange and the second annular flange.

[0013] According to one example, the second annular flange is circumferentially provided with a plurality of springs, the tips of which elastically abut against the lower part of the conduit to provide an upward preload to the conduit.

[0014] According to one example, at least one groove communicating with the threaded hole is formed on the circumferential wall of the first tube body. A pin is detachably disposed in the groove, the pin passing through the groove and abutting against the side wall of the first screw, for locking the telescopic assembly in its telescopic position.

[0015] According to one example, the outer wall of the catheter is provided with graduation lines along the axial direction.

[0016] According to one example, the system also includes a lifting assembly, which includes a support base with a communication port for the second tube to pass through. Telescopic rods are provided on both sides of the communication port, and a fixing plate is disposed between the two telescopic rods. The fixing plate spans over the communication port, and an insertion hole for receiving the second tube is formed in the middle of the fixing plate. Ear plates are provided on both side walls of the first tube, and the ear plates are detachably connected to the fixing plate to fix the relative position of the first tube and the lifting assembly.

[0017] This utility model has the following advantages:

[0018] This novel insertion-type testing device enables in-situ real-time monitoring. The second tube of the insertion component can be easily inserted into the mixture at the construction site. Its lower inlet directly receives the sample and guides it into the conduit. Combined with the liquid level sensor at the bottom of the conduit and the digital display at the top of the first tube, it can monitor and visually display changes in the adhesive level, solving the problem of laboratory testing being unsuitable for on-site application. This insertion design, through the screw of the telescopic component, adjusts the detection depth, ensuring stable operation of the device in the construction environment and providing immediate data for quality control.

[0019] The first and second screws of the telescopic assembly achieve length adjustment through threaded engagement. The digital display integrates temperature control and data display functions, eliminating the traditional weighing step in testing. The cylinder of the insertion assembly separates the sample chamber and the heat conduction chamber, allowing insulation and testing to proceed simultaneously. Furthermore, the guide tube can be quickly assembled and disassembled through the cooperation of the second screw, annular flange, and spring. The scale lines on its outer wall can also verify the digital display data. Overall, the time for a single test is reduced by more than 50%, significantly minimizing the impact on the construction schedule.

[0020] The automated control of the digital display reduces manual operation, and the modular structure allows non-professionals to get started quickly. The detachable conduit is made of high-temperature resistant transparent material and can be easily removed by unscrewing the second tube. It can be reused after being cleaned by combustion, which reduces the consumption of consumables and conforms to the green and low-carbon concept, resulting in lower long-term use costs.

[0021] The heat-conducting medium is injected through the through hole, and the resistance wire around the cylinder is heated evenly. The temperature sensor feeds back the data to the digital display in real time, ensuring that a stable target temperature field is formed inside the insertion component, providing a solid guarantee for the accuracy of the test results. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the insertion-type testing device for flowable asphalt mixtures according to this utility model.

[0023] Figure 2 This is an exploded perspective view of the insertion-type detection device of this utility model.

[0024] Figure 3 This is a three-dimensional sectional view of the first tube body of this utility model.

[0025] Figure 4 This is a three-dimensional sectional view of the second tube body of this utility model.

[0026] Figure 5 yes Figure 4 A schematic diagram of the partial three-dimensional structure at point A.

[0027] Figure 6 yes Figure 4 A schematic diagram of the partial three-dimensional structure at point B.

[0028] Figure 7 This is a three-dimensional sectional view of the connecting part and the insertion component of this utility model.

[0029] Figure 8 yes Figure 7 A schematic diagram of the partial three-dimensional structure at point C.

[0030] Figure 9 This is a three-dimensional structural diagram of the insertion-type detection device of this utility model equipped with a lifting component.

[0031] Wherein, 1 is the telescopic component, 101 is the first tube body, 101a is the threaded hole, 101b is the slot, 101c is the pin, 102 is the connecting part, 102a is the first screw, 102b is the second screw, 102c is the fixing ring, 2 is the insertion component, 201 is the second tube body, 202 is the cylinder body, 2a is the sample chamber, 2a1 is the mounting port, 2a2 is the feed port, 2a3 is the first annular flange, 2a4 is the second annular flange, 2a5 is the spring, 2b is the heat conduction chamber, 2b1 is the through hole, 2b2 is the resistance wire, 203 is the guide tube, 203a is the scale line, 3 is the digital display part, 4 is the lifting component, 401 is the support base, 401a is the connecting port, 402 is the telescopic rod, 403 is the fixing plate, 403a is the insertion hole, and 404 is the ear plate. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1 This invention illustrates an embodiment of an insertion-type testing device for flowing asphalt slurry mixtures. The device has an overall cylindrical structure and mainly comprises, from top to bottom, a digital display unit 3, a telescopic component 1, and an insertion component 2, all coaxially assembled to form an integrated testing structure. The digital display unit 3 is located at the top of the device and is used to visually display testing data. The telescopic component 1 is connected below the digital display unit 3 and can adjust its length to change the overall size of the device to accommodate different testing depths. The insertion component 2 is located at the bottom of the device and can be directly inserted into the flowing asphalt slurry mixture to achieve sample acquisition and data collection. Through the coordinated work of the digital display unit 3, the telescopic component 1, and the insertion component 2, an integrated testing process of in-situ insertion, data monitoring, and result display is achieved.

[0034] Reference Figure 2 and Figure 3 The telescopic assembly 1 includes a hollow first tube 101 and a connecting part 102 telescopically connected to the bottom of the first tube 101. The connecting part 102 is used to adjust the detection depth and includes a first screw 102a and a second screw 102b arranged coaxially, and a fixing ring 102c disposed between the first screw 102a and the second screw 102b. The fixing ring 102c is located between the first tube 101 and the second tube 201 of the insertion assembly 2, serving as both a connecting carrier for the first screw 102a and the second screw 102b and a gripping part for the operator, facilitating the disassembly, length adjustment, or tightening of the first tube 101 and the second tube 201 by rotation. The cross-sectional shape of the first tube 101 is hexagonal, but it can also be circular, triangular, square, etc., while the cross-sectional shape of the second tube 201 is circular.

[0035] The bottom inner wall of the first tube 101 is provided with a threaded hole 101a. The first screw 102a is threaded into the threaded hole 101a to adjust the distance between the first tube 101 and the second tube 201. The upper part of the sample chamber 2a of the insertion assembly 2 is provided with an installation port 2a1. The inner wall of the installation port 2a1 is formed with a threaded section. The second screw 102b is threaded into the installation port 2a1. By rotating the first tube 101, the first screw 102a can be driven to extend and retract axially, thereby adjusting the overall length of the device. The lower part of the second screw 102b extends into the sample chamber 2a, so that its bottom end presses against the upper part of the guide tube 203 to fix the axial position of the guide tube 203 and prevent the guide tube 203 from shaking during the detection process. Usually, the diameter of the second screw 102b is greater than or equal to the diameter of the guide tube 203.

[0036] To lock the telescopic assembly at its extended position, at least one slot 101b communicating with a threaded hole 101a is provided on the circumferential wall of the first tube 101. A pin 101c can be inserted into the slot 101b. When the first screw 102a is adjusted to the target position, the pin 101c passes through the slot 101b and abuts against the side wall of the first screw 102a. The frictional force restricts the rotation of the screw, achieving rigid locking of the telescopic assembly 1. This effectively prevents axial movement of the inserted assembly 2 during the testing process and ensures structural stability.

[0037] Reference Figure 2 as well as Figure 4-8 The insertion assembly 2 includes a second tube 201 detachably disposed at the lower part of the connecting part 102, and a cylindrical body 202 fixed inside it along the axial direction. The cylindrical body 202 divides the interior of the second tube 201 into two independent chambers: one is a sample chamber 2a located inside the cylindrical body 202, and the other is an annular heat-conducting chamber 2b located between the cylindrical body 202 and the second tube 201.

[0038] The sample chamber 2a is used to contain asphalt mixture. It has a feed inlet 2a2 at the bottom to receive external asphalt mixture. Its upper part is connected to the second screw 102b of the telescopic component 1 through the mounting port 2a1. A conduit 203 is detachably installed inside. The conduit 203 is made of a high-temperature resistant transparent material, such as glass. Its outer wall has scale lines 203a along the axial direction, which can easily and intuitively read the liquid level height to verify the data of the digital display 3. After the test is completed, the conduit 203 can be disassembled, and the residual adhesive can be removed by high-temperature combustion and cleaned for reuse.

[0039] The heat-conducting chamber 2b is used to maintain a stable detection temperature. Its upper sidewall has a through-hole 2b1 for injecting a heat-conducting medium, such as heat-conducting oil. Inside the heat-conducting chamber 2b, at least one resistance wire 2b2 for heating the heat-conducting medium is arranged circumferentially around the outer side of the cylinder 202. In this embodiment, there are six resistance wires 2b2. The resistance wires 2b2 are electrically connected to the digital display unit 3 and can be driven to heat by the controller of the digital display unit 3. Finally, the heat is evenly transferred to the conduit 203 of the sample chamber 2a through the heat-conducting medium, ensuring a stable detection environment temperature. The second tube 201 has vertically arranged straight sections and tapered sections. The tapered sections facilitate insertion into the mixture, while the straight sections ensure structural rigidity. Similarly, the cylinder 202 has vertically arranged straight sections and tapered sections to match the shape of the second tube 201. Of course, the cylinder 202 can also consist only of straight sections. In embodiments not shown, the outer wall of the second tube 201 is also provided with a heat insulation layer to reduce heat loss.

[0040] Reference Figure 1 and Figure 2 The digital display unit 3 is integrated into the upper part of the first tube body 101. It may include a power supply, controller and display screen inside, and operation buttons are provided on the outside. It mainly realizes temperature control, data acquisition and display functions.

[0041] The heat-conducting chamber 2b is equipped with a temperature sensor electrically connected to the controller, which can detect the temperature of the heat-conducting medium in real time. The controller drives the resistance wire 2b2 to work according to the preset temperature. Through heat conduction by the heat-conducting medium, a uniform and stable temperature field is formed in the conduit 203 of the sample chamber 2a, simulating the temperature environment of the mixture at the construction site. Specifically, the digital display unit 3 can set and stabilize the heating temperature of the heat-conducting chamber 2b at T℃ based on the actual construction temperature of the FMA mixture being laid on site (denoted as T℃) through the preset temperature of the controller. Through the synergistic effect of the resistance wire 2b2 and the heat-conducting medium, the sample chamber 2a maintains a temperature environment consistent with that of the construction site.

[0042] The lower part of the conduit 203 is equipped with a liquid level sensor, the sensing surface of which is flush with the inlet of the conduit 203. This sensor can monitor the liquid level of the asphalt mixture inside the conduit 203 in real time and transmit the signal to the controller. This liquid level data is an indicator of the asphalt mixture's fluidity and is displayed on a screen along with temperature data and testing time. After testing, the second pipe 201 is separated by rotating it in the opposite direction using the fixing ring 102c of the telescopic component 1. This allows for easy disassembly of the insertion component 2, removal of the conduit 203, and verification of the scale reading. The operation is simple and easy to maintain.

[0043] Specifically, the insertion component 2 is inserted vertically into the bottom of the FMA mixture after it has been unloaded to the designed height. During this process, the device remains heated and insulated. The inlet 2a2 of the insertion component 2 receives the mixture and guides it into the conduit 203. After standing for a certain period of time (e.g., 5-10 minutes), the digital display 3 monitors and displays the flowability data of the adhesive in the conduit 203 via a level sensor. After the test is completed, once the device has cooled to room temperature, the second tube 201 can be rotated by holding the fixing ring 102c of the telescopic component 1, causing the second screw 102b to separate from the thread of the mounting port 2a1, thereby removing the conduit 203 from the sample chamber 2a. The scale line 203a on the outer wall of the conduit 203 records the final flow height of the adhesive, which is used for comparison and verification with the data displayed on the digital display 3 to ensure test accuracy.

[0044] Reference Figure 4-7 The upper inner wall of the sample chamber 2a is provided with a first annular flange 2a3, and the lower inner wall is provided with a second annular flange 2a4. The first annular flange 2a3 and the second annular flange 2a4 are arranged coaxially and together form the positioning boundary of the conduit 203. The bottom of the conduit 203 abuts against the upper surface of the second annular flange 2a4, and the top of the conduit 203 is flush with the lower surface of the first annular flange 2a3. The lower part of the second screw 102b abuts against the upper surface of the first annular flange 2a3 and the top end face of the conduit 203, so that the conduit 203 is confined between the first annular flange 2a3 and the second annular flange 2a4. First, the conduit 203 is placed into the sample chamber 2a, with its bottom abutting against the upper surface of the second annular flange 2a4. At this time, the top of the conduit 203 is flush with the lower surface of the first annular flange 2a3. Then, by rotating the second tube body 201, the bottom end of the second screw 102b abuts against the upper surface of the first annular flange 2a3 and the top end face of the conduit 203. Through the axial pressure of the second screw 102b, the conduit 203 is clamped and fixed between the first annular flange 2a3 and the second annular flange 2a4, which ensures axial positioning accuracy and avoids radial shaking.

[0045] To facilitate the disassembly of the conduit 203, multiple springs 2a5 are evenly arranged circumferentially on the upper surface of the second annular flange 2a4, with the top of each spring 2a5 elastically abutting against the bottom of the conduit 203. Specifically, before the conduit 203 is subjected to pressure from the second screw 102b, it is in a naturally positioned state due to the support of the springs 2a5. At this time, its top will be a certain distance higher than the first annular flange 2a3, reserving space for subsequent compression and fixation. When the second screw 102b is screwed downward along the thread of the mounting port 2a1 by rotating the second tube body 201, the bottom of the second screw 102b will gradually contact and press against the top of the guide tube 203. As the tightening force increases, the guide tube 203 moves downward under the action of axial pressure, and the spring 2a5 is compressed synchronously until the top of the guide tube 203 is flush with the upper surface of the first annular flange 2a3. At this time, the spring 2a5 is in a compressed energy storage state, and its reaction force is balanced with the pressure of the second screw 102b, ensuring that the guide tube 203 is stably clamped between the first annular flange 2a3 and the second annular flange 2a4, avoiding positional displacement caused by vibration or impact of the mixture during the detection process. When the test is completed and the catheter 203 needs to be removed, simply unscrew the second screw 102b in the opposite direction to disengage its bottom from the top of the catheter 203. At this time, the preload stored in the spring 2a5 is released, pushing the catheter 203 upward to reset until its top protrudes again above the first annular flange 2a3. The operator can then directly grasp the protruding part of the catheter 203 and remove it from the sample chamber 2a without additional tools, which significantly improves the ease of disassembling the catheter 203 and reduces the damage that may be caused to the catheter 203 by forcibly pulling it out.

[0046] In an embodiment not shown, multiple springs 2a5 are fitted with annular sealing rings. The upper end face of the sealing ring is in contact with the bottom edge of the conduit 203, and its lower end face is sealed to the upper surface of the second annular flange 2a4. This arrangement effectively seals the gap between the bottom of the conduit 203 and the second annular flange 2a4, preventing asphalt mixture from leaking through the gap during feeding. This ensures that external mixture can only enter the conduit 203 through the inlet 2a2, avoiding insufficient detection or data distortion due to leakage. It also reduces contamination of the internal structure of the device by mixture residue, improving the accuracy of detection results and the efficiency of cleaning and maintenance of the device.

[0047] Reference Figure 9The insertion-type detection device also includes a lifting assembly 4 to achieve vertical lifting and positioning of the device. The lifting assembly 4 includes a support base 401, which has a horizontal plate-like structure with a through-hole 401a in the middle. The inner diameter of the through-hole 401a is larger than the outer diameter of the second tube 201, allowing the second tube 201 to pass through freely. Two telescopic rods 402 are symmetrically arranged on both sides of the through-hole 401a on the upper surface of the support base 401. The telescopic rod 402 includes a fixed column and a telescopic column. The fixed column is vertically fixed to the support base 401, and the telescopic column can slide and extend along the axial direction of the fixed column. The tops of the telescopic columns of the two telescopic rods 402 are connected together by a fixed plate 403 and span over the through-hole 401a, with its length direction consistent with the length direction of the support base 401.

[0048] An insertion hole 403a is provided in the middle of the fixing plate 403. The inner diameter of the insertion hole 403a matches the outer diameter of the first tube 101 and is coaxially arranged with the communication port 401a of the support base 401, forming a channel through which the first tube 101 and the second tube 201 pass perpendicularly. Ear plates 404 are symmetrically arranged on both sides of the first tube 101. The ear plates 404 are detachably connected to the fixing plate 403 to fix the relative position of the first tube 101 and the lifting assembly 4. Through the extension and retraction of the telescopic rod 402, the fixing plate 403 and the insertion assembly 2 can be moved vertically as a whole, achieving precise adjustment of the detection depth and saving manpower.

[0049] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention should be considered equivalent substitutions and are included within the protection scope of the present invention. The embodiments described in this disclosure are intended as non-limiting examples, and other embodiments may take various and alternative forms. Furthermore, the drawings are not necessarily to scale and may present simplified expressions of various features of the present disclosure, including, for example, specific dimensions, orientations, positions, and shapes. Details associated with such features will be determined in part by the intended application and usage environment of the described embodiments.

[0050] The detailed description and accompanying drawings are supporting and descriptive of this teaching, but the scope of this teaching is defined only by the claims. While the best mode and some other embodiments for carrying out this teaching have been described in detail, various alternative designs and embodiments exist for practicing the teaching as defined in the appended claims. Furthermore, this disclosure expressly includes combinations and sub-combinations of the elements and features set forth above and below.

Claims

1. An insertion-type testing device for flowable asphalt mixtures, characterized in that, include: A telescopic assembly, comprising a first tube and a connecting portion telescopically connected to the bottom of the first tube, the connecting portion being used to adjust the detection depth; An insertion assembly includes a second tube detachably disposed at the lower part of the connecting portion, wherein a cylindrical body is disposed within the second tube along its axial direction, and the cylindrical body divides the interior of the second tube into a sample chamber and a heat-conducting chamber; The upper part of the sample chamber is provided with an installation port that can be detachably connected to the connecting part, and the lower part is provided with an inlet for receiving asphalt mixture. The sample chamber is provided with a conduit for containing asphalt mixture, and the side wall of the heat conduction chamber is provided with a through hole for receiving heat conduction medium. A digital display unit, located at the upper part of the first pipe body, is used to display the temperature inside the second pipe body and the liquid level of the asphalt mixture inside the conduit.

2. The insertion-type detection device according to claim 1, characterized in that, The heat-conducting chamber is provided with at least one resistance wire for heating the heat-conducting medium, and the resistance wire is connected to the circuit of the digital display unit.

3. The insertion-type detection device according to claim 1, characterized in that, The lower part of the conduit is equipped with a liquid level sensor for monitoring the liquid level of the asphalt mixture inside the conduit, and the liquid level sensor is connected to the circuit of the digital display unit.

4. The insertion-type detection device according to claim 1, characterized in that, A temperature sensor is installed in the heat-conducting chamber and is connected to the digital display circuit to detect the temperature of the heat-conducting medium.

5. The insertion-type detection device according to claim 1, characterized in that, The connecting part includes a first screw and a second screw arranged vertically, and a fixing ring disposed between the first screw and the second screw; a threaded hole is formed at the bottom of the first tube body, and the first screw is threaded into the threaded hole to adjust the distance between the first tube body and the second tube body; a threaded section is formed on the inner wall of the mounting port, and the second screw is threaded into the mounting port, wherein the lower part of the second screw abuts against the upper part of the conduit to fix the axial position of the conduit.

6. The insertion-type detection device according to claim 5, characterized in that, The upper inner wall of the sample chamber is provided with a first annular flange, and the lower inner wall is provided with a second annular flange. The bottom of the conduit abuts against the upper surface of the second annular flange, and the top of the conduit is flush with the lower surface of the first annular flange. The lower part of the second screw abuts against the upper surface of the first annular flange and against the top end face of the conduit, so that the conduit is confined between the first annular flange and the second annular flange.

7. The insertion-type detection device according to claim 6, characterized in that, The second annular flange is circumferentially provided with a plurality of springs, the top of which elastically abuts against the lower part of the conduit to provide an upward preload to the conduit.

8. The insertion-type detection device according to claim 5, characterized in that, At least one slot communicating with the threaded hole is formed on the circumferential wall of the first tube. A pin is detachably provided in the slot. The pin passes through the slot and abuts against the side wall of the first screw to lock the telescopic position of the telescopic assembly.

9. The insertion-type detection device according to claim 1, characterized in that, The outer wall of the catheter is provided with graduation lines along the axial direction.

10. The insertion-type detection device according to claim 1, characterized in that, It also includes a lifting assembly, which includes a support base with a connecting port for the second tube to pass through. Telescopic rods are provided on both sides of the connecting port, and a fixing plate is provided between the two telescopic rods. The fixing plate spans over the connecting port, and an insertion hole for receiving the second tube is formed in the middle of the fixing plate. Ear plates are provided on both side walls of the first tube, and the ear plates are detachably connected to the fixing plate to fix the relative position of the first tube and the lifting assembly.

Images