Capillary rheometer

Abstract

The invention discloses a capillary rheometer, and relates to the technical field of rheometers, the capillary rheometer comprises a workbench, a charging barrel, a capillary module, a material pressing rod, a sensor module, a positioning mechanism, a storage mechanism, a heat exchange mechanism and a protection mechanism, the top end of the workbench is fixedly connected with a rack, and the charging barrel is connected with an inner cavity of a through groove in a sliding and penetrating manner; the capillary tube module is connected with an inner cavity of the groove, the pressing rod is fixedly installed at the bottom end of the rack, the sensor modules are symmetrically installed on the two sides of the charging barrel, the positioning mechanism is arranged in the workbench, the storage mechanism is arranged in the workbench, the heat exchange mechanism is connected with the positioning mechanism, and the protection mechanism is arranged on the rack. By means of the arrangement mode that the positioning mechanism, the storage mechanism, the heat exchange mechanism and the protection mechanism are matched, power is provided through the protection mechanism, and the mounting rod in the positioning mechanism can be controlled to move, so that the charging barrel and the capillary tube module are rapidly mounted and dismounted, and the subsequent cleaning efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rheometers, and particularly relates to a capillary rheometer. Background Art

[0002] A capillary rheometer is an instrument used to study the flow properties of materials such as polymers. It analyzes the rheological properties of materials by measuring parameters such as the flow rate of materials in a capillary, providing important data and references for the research and processing of materials.

[0003] When a capillary rheometer detects materials, the materials need to be placed inside a barrel and heated by an internal heating device to make the materials reach a molten state. Under the action of a certain pressure of a pressure rod, the materials will pass through a capillary module. Pressure and temperature sensors on both sides of the barrel will monitor the flow of materials in the capillary module in real time. By analyzing these monitored data, the rheological properties of materials under different pressure and temperature conditions can be obtained;

[0004] Existing capillary rheometers generally connect the capillary module and the barrel by means of threaded connection, and the barrel is generally installed on a workbench by bolts. After the capillary rheometer finishes detecting materials, the capillary module needs to be disassembled, and the barrel and the capillary module need to be cleaned. However, different tools are required by the operator for disassembly during disassembly, which is rather inconvenient. Moreover, after the capillary module finishes detecting the materials to be detected, it is necessary to wait for a long time until the barrel and the capillary module cool down to a certain temperature or below before the capillary module can be disassembled, thus further affecting the cleaning efficiency of the subsequent machine. Summary of the Invention

[0005] The purpose of the present invention is to provide a capillary rheometer to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A capillary rheometer, comprising:

[0007] A workbench, the top end of the workbench is fixedly connected with a frame;

[0008] A barrel, a through groove is opened at the top end of the workbench, and the barrel is slidably inserted into the inner cavity of the through groove;

[0009] A capillary module, a groove is opened at the bottom end of the barrel, and the capillary module is slidably inserted into the inner cavity of the groove;

[0010] A pressure rod, the pressure rod is fixedly installed at the bottom end of the frame and is used to extrude the materials in the barrel;

[0011] A sensor module, the sensor module is symmetrically installed on both sides of the barrel;

[0012] A positioning mechanism, which is arranged inside the workbench and is used to limit the displacement of the barrel and the capillary module;

[0013] A storage mechanism, which is arranged inside the workbench and is used to receive the disassembled capillary module;

[0014] A heat exchange mechanism, which is connected to the positioning mechanism and is used to reduce the temperature of the barrel and the capillary module;

[0015] A protection mechanism, which is arranged on the frame and is used to provide power for the positioning mechanism and isolate the barrel.

[0016] Preferably, the positioning mechanism includes:

[0017] An installation rod. Installation grooves are respectively opened at the bottom ends of the barrel and the capillary module. The installation rod is slidably inserted into the inner cavity of the installation groove. The cross section of the installation rod is trapezoidal, and a heat exchange groove is opened inside the installation rod;

[0018] A reinforcing rod, which is fixedly connected to the bottom end of the installation rod;

[0019] An extrusion block, which is fixedly connected to the bottom end of the reinforcing rod, and an inclined surface is opened at the bottom end of the extrusion block;

[0020] An extrusion limiting component, which is arranged inside the workbench and is used to control the displacement of the installation rod.

[0021] Preferably, the extrusion limiting component includes:

[0022] A material receiving box, which is arranged inside the workbench;

[0023] An extrusion plate. Displacement grooves are respectively opened on both sides of the inner wall of the workbench. The extrusion plate is located inside the displacement grooves. The extrusion block and the extrusion plate cooperate with each other, and an extrusion groove is opened on the outer wall of the extrusion plate;

[0024] A limiting frame, which is symmetrically and fixedly connected to one side of the extrusion plate and is used to limit the displacement of the extrusion block.

[0025] Preferably, the extrusion limiting component further includes:

[0026] A clamping rod. Clamping grooves are respectively opened on the opposite sides of the extrusion plate. Clamping holes are equally spaced on both sides of the workbench. One end of the clamping rod is slidably inserted into the inner cavity of the clamping hole, and the other end of the clamping rod is slidably inserted into the inner cavity of the clamping groove. An inclined surface is opened at one end of the clamping rod;

[0027] A ball, which is embedded at one end of the clamping rod and is used to fit against the inner wall of the displacement groove;

[0028] A first compression spring, one end of which is fixedly connected to the inner wall of the clamping groove, and the other end of which is fixedly connected to the other end of the clamping rod.

[0029] Preferably, the extrusion limiting assembly further includes:

[0030] A lifting plate, the top of the material collecting box is equidistantly provided with lifting grooves, and the lifting plate is located inside the lifting grooves;

[0031] A hook, the top of the workbench is equidistantly provided with placement grooves, the hook is located inside the placement grooves, and the hook cooperates with the protection mechanism;

[0032] A connecting rope, one end of which is fixedly connected to the hook, and the other end of which passes through the inner wall of the placement groove and is fixedly connected to the lifting plate.

[0033] Preferably, the positioning mechanism further includes:

[0034] A limiting block, which is fixedly connected to the top of the mounting rod, a limiting groove is opened at the top of the inner wall of the displacement groove, the limiting block is slidably inserted into the inner cavity of the limiting groove, and the cross section of the limiting block is T-shaped;

[0035] A second compression spring, one end of which is fixedly connected to the limiting block, and the other end of which is fixedly connected to the inner wall of the limiting groove;

[0036] A limiting plate, which is fixedly connected to the top of the mounting rod, and a through hole is opened on the limiting plate.

[0037] Preferably, the storage mechanism includes:

[0038] A horizontal plate, which is fixedly connected to the outer wall of the workbench;

[0039] A slider, a sliding groove is opened at the top of the horizontal plate, and the slider is slidably inserted into the inner cavity of the sliding groove;

[0040] A pulley, which is rotatably arranged inside the slider through a rotating shaft and is used to fit against the inner wall of the sliding groove;

[0041] A synchronous plate, which is fixedly connected to the top of the pulley, and the cross section of the synchronous plate is L-shaped;

[0042] An extrusion rod, one end of which is fixedly connected to the outer wall of the synchronous plate, a first horizontal groove is opened on the outer wall of the workbench, and the other end of the extrusion rod passes through the first horizontal groove and is slidably inserted into the inner cavity of the extrusion groove;

[0043] Connecting plate, the connecting plate is fixedly connected to the outer wall of the synchronous plate, a second horizontal groove is opened on the outer wall of the workbench, and the connecting plate is slidably inserted into the inner cavity of the second horizontal groove;

[0044] Storage box, the storage box is located inside the workbench, and the storage box is fixedly connected to the connecting plate.

[0045] Preferably, a protective pad is fixedly connected to the inner wall of the storage box, and the protective pad is made of sponge material.

[0046] Preferably, the heat exchange mechanism includes:

[0047] Preheating box, the preheating box is fixedly installed on both sides of the workbench;

[0048] Box cover, the box cover is arranged on the top of the preheating box;

[0049] Preheating hopper, the preheating hopper is arranged inside the preheating box for placing the material to be tested;

[0050] Fan, the fan is fixedly installed at the bottom of the preheating box for guiding air into the preheating box;

[0051] Connecting pipe, one end of the connecting pipe is fixedly inserted into the heat exchange groove, and the other end of the connecting pipe is fixedly connected to the input end of the fan.

[0052] Preferably, the protection mechanism includes:

[0053] Protective shell, the protective shell is sleeved on the outside of the barrel, the pressing rod is slidably inserted into the protective shell, and the protective shell is made of transparent material;

[0054] Electric telescopic rod, the electric telescopic rod is arranged inside the frame, and one end of the electric telescopic rod is fixedly connected to the protective shell;

[0055] Pull ring, the pull ring is fixedly connected to both sides of the protective shell, and the pull ring cooperates with the hook.

[0056] The technical effects and advantages of the present invention:

[0057] (1) The present invention utilizes a positioning mechanism, a storage mechanism, a heat exchange mechanism and a protective mechanism in a coordinated arrangement. The protective mechanism provides power to control the displacement of the mounting rod in the positioning mechanism, thereby realizing rapid installation and removal of the barrel and the capillary module, improving the subsequent cleaning efficiency. When the capillary module is removed, it can fall into the storage mechanism by itself, which is convenient for taking at any time. The operation is simple and convenient. When the mounting rod of the positioning mechanism is in the installation state, the heat exchange mechanism can quickly cool the barrel and the capillary module, and the heat exchanged air can be used to preheat the next batch of materials to be tested, thereby improving the detection efficiency of the next batch of materials to be tested, and facilitating use.

[0058] (2) The present invention utilizes a mounting rod, a reinforcing rod, an extrusion block, an extrusion limit assembly, a limit block, a second compression spring and a limit plate in a coordinated arrangement. Through the displacement of the extrusion limit assembly, the extrusion block can be squeezed, so that the reinforcing rod drives the mounting rod to move horizontally under the limit of the limit block, thereby realizing rapid disassembly of the barrel and the capillary module according to different displacement distances. At the same time, under the elastic force of the second compression spring, the mounting rod can be in a stable installation state, and the limit plate can also limit the sensor module to prevent the sensor module from loosening during use, thereby affecting the detection result, and facilitating use.

[0059] (3) The present invention utilizes a setting method in which the extrusion limit assembly and the protective mechanism cooperate. The protective mechanism can not only cover the heated barrel to prevent accidental touch and burns, but also can be connected to the pull ring in the protective mechanism through a hook after the detection is completed, and then powered by an electric telescopic rod without manual force, so that the material receiving box drives multiple extrusion plates to move, thereby extruding the extrusion block to different degrees, realizing horizontal displacement of the mounting rod, and completing the disassembly of the capillary module and the barrel. At the same time, the setting of the limit frame enables the mounting rod to limit the extrusion block when it is in the installation state, but cannot limit the reinforcing rod from passing through the gap between the limit frames, thereby making the installation state of the mounting rod more stable. At the same time, the limit plate is more stable in limiting the sensor module, and does not affect the normal use of the extrusion displacement of the extrusion block.

[0060] (4) The present invention utilizes a configuration method in which a horizontal plate, a slider, a pulley, a synchronous plate, an extrusion rod, a connecting plate, a storage box and a protective pad are matched with each other. The pulley is used to reduce the friction force of the slider displacement. Therefore, when the extrusion plate is displaced to disassemble the capillary module, the extrusion rod can be squeezed through the extrusion groove, so that the synchronous plate can slide easily and drive the storage box to move through the connecting plate. Therefore, after the mounting rod is separated from the mounting groove of the capillary module, the capillary module can fall into the box body composed of the two storage boxes, thereby realizing automatic disassembly and acceptance.

[0061] (5) The present invention uses the setting method of cooperating the mounting rod, preheating box, box cover, preheating hopper, fan and connecting pipe. Through the mounting rod, not only can the barrel and the capillary module be installed, but also the heat exchange tank inside it can be used to perform heat exchange through the fan. While quickly cooling the barrel and the capillary module, it can preheat the next batch of materials to be tested, thereby improving the detection efficiency of the next batch of materials and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is one of the overall structural schematic diagrams of the present invention.

[0063] Figure 2 It is the second of the overall structural schematic diagrams of the present invention.

[0064] Figure 3 It is the overall front internal structural schematic diagram of the present invention.

[0065] Figure 4 It is the overall front internal structural schematic diagram of the workbench of the present invention.

[0066] Figure 5 For the present invention Figure 4 The enlarged structural schematic diagram at A in it.

[0067] Figure 6 It is the front internal structural schematic diagram of the barrel of the present invention.

[0068] Figure 7 It is the front internal structural schematic diagram of the extrusion plate of the present invention.

[0069] Figure 8 It is the front internal structural schematic diagram of the cross plate of the present invention.

[0070] Figure 9 It is the structural schematic diagram of the extrusion plate of the present invention.

[0071] Figure 10 It is the structural schematic diagram of the mounting rod of the present invention.

[0072] Figure 11 It is the top internal structural schematic diagram of the mounting rod of the present invention.

[0073] Figure 12 It is the side internal structural schematic diagram of the barrel of the present invention.

[0074] Figure 13 It is the top internal structural schematic diagram of the barrel of the present invention.

[0075] Figure 14 It is the front internal structural schematic diagram of the storage box of the present invention.

[0076] In the figure: 1, workbench; 2, frame; 3, barrel; 4, capillary module; 5, pressure rod; 6, sensor module; 7, positioning mechanism; 71, mounting rod; 72, reinforcing rod; 73, extrusion block; 74, extrusion limiting component; 741, material receiving box; 742, extrusion plate; 743, limiting frame; 744, clamping rod; 745, ball; 746, first compression spring; 747, lifting plate; 748, hook; 749, connecting rope; 75, limiting block; 76, second compression spring; 77, limiting plate; 8, storage mechanism; 81, cross plate; 82, slider; 83, pulley; 84, synchronization plate; 85, extrusion rod; 86, connecting plate; 87, storage box; 88, protective pad; 9, heat exchange mechanism; 91, preheating box; 92, box cover; 93, preheating hopper; 94, fan; 95, connecting pipe; 10, protection mechanism; 101, protective shell; 102, electric telescopic rod; 103, pull ring. Specific embodiments

[0077] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0078] The present invention provides as Figures 1-14A capillary rheometer as shown includes a workbench 1, a frame 2, a barrel 3, a capillary module 4, a pressure rod 5, a sensor module 6, a positioning mechanism 7, a storage mechanism 8, a heat exchange mechanism 9 and a protection mechanism 10. The top end of the workbench 1 is fixedly connected to the frame 2. A through groove is formed in the top end of the workbench 1. The barrel 3 is slidably inserted into the inner cavity of the through groove. The barrel 3 usually has a heating device inside to heat the material to the temperature required to reach the molten state for the subsequent constant force extrusion of the pressure rod 5, so as to be detected by the sensor module 6. A groove is formed in the bottom end of the barrel 3. The capillary module 4 is slidably inserted into the inner cavity of the groove. The capillary module 4 and the barrel 3 are sealed by a sealing gasket. The pressure rod 5 is fixedly installed at the bottom end of the frame 2 and is used to extrude the material in the barrel 3. The pressure rod 5 is controlled by a transmission part inside the frame 2 and can extrude the material in the barrel 3 with a constant force. The sensor module 6 is symmetrically installed on both sides of the barrel 3. The sensor module 6 mainly includes a pressure sensor, a temperature sensor and a data connection line. The pressure sensor and the temperature sensor are respectively installed on both sides of the barrel 3. The pressure sensor and the temperature sensor are connected to the corresponding external circuits through the data connection line and then connected to an external data acquisition system, so as to realize the corresponding detection requirements. The pressure sensor can sense the pressure change of the fluid inside the barrel 3. Connect the pressure sensor to a bridge circuit and then connect it to an external data acquisition system, and the pressure change can be converted into a voltage change and then converted into an electrical signal and transmitted to the data acquisition system. The temperature sensor can capture the temperature change of the fluid inside the barrel 3. Based on principles such as the thermal resistance effect or the thermocouple effect, the change in temperature causes the electrical parameters inside the temperature sensor to change, and it is converted into an electrical signal and output to the data acquisition system, so that the pressure and temperature data detected by these sensors can be transmitted to the subsequent analysis and processing system and then displayed on the software interface in real time. By calculating the corresponding pressure, temperature and other data displayed on the software interface, researchers can deeply understand important information such as the flow characteristics and heat transfer characteristics of the material under specific conditions, providing accurate and reliable data support for the research, production and quality control of the material. The positioning mechanism 7 is arranged inside the workbench 1 and is used to limit the displacement of the barrel 3 and the capillary module 4. The storage mechanism 8 is arranged inside the workbench 1 and is used to receive the disassembled capillary module 4. The heat exchange mechanism 9 is connected to the positioning mechanism 7 and is used to reduce the temperature of the barrel 3 and the capillary module 4. The protection mechanism 10 is arranged on the frame 2 and is used to provide power for the positioning mechanism 7 and isolate the barrel 3.

[0079] Specifically, the positioning mechanism 7 includes a mounting rod 71, a reinforcing rod 72, a pressing block 73, a pressing and limiting component 74, a limiting block 75, a second compression spring 76 and a limiting plate 77. Installation grooves are provided at the bottom ends of both the material cylinder 3 and the capillary module 4. The mounting rod 71 is slidably inserted into the inner cavity of the installation groove. The cross-section of the mounting rod 71 is trapezoidal. A heat exchange groove is provided inside the mounting rod 71. After passing through the installation groove, the trapezoidal mounting rod 71 can cooperate with the workbench 1 to fix the material cylinder 3 on the workbench 1. At the same time, the mounting rod 71 can pass through the installation groove of the capillary module 4, so as to fix the capillary module 4 on the material cylinder 3. The reinforcing rod 72 is fixedly connected to the bottom end of the mounting rod 71. The pressing block 73 is fixedly connected to the bottom end of the reinforcing rod 72. An inclined surface is provided at the bottom end of the pressing block 73. The pressing and limiting component 74 is arranged inside the workbench 1 and is used to control the displacement of the mounting rod 71. By pressing the pressing block 73 with the pressing and limiting component 74, the mounting rod 71 can displace horizontally through the reinforcing rod 72, so as to realize the disassembly and installation of the material cylinder 3 and the capillary module 4. The limiting block 75 is fixedly connected to the top end of the mounting rod 71. A limiting groove is provided at the top end of the inner wall of the displacement groove. The limiting block 75 is slidably inserted into the inner cavity of the limiting groove. The cross-section of the limiting block 75 is T-shaped. The limiting block 75 plays a role in horizontally limiting the mounting rod 71, so that the mounting rod 71 can only displace horizontally along the limiting groove driven by the displacement of the pressing block 73. One end of the second compression spring 76 is fixedly connected to the limiting block 75, and the other end of the second compression spring 76 is fixedly connected to the inner wall of the limiting groove. The second compression spring 76 is always in a compressed state, so as to provide a stable elastic force for the mounting rod 71 through the limiting block 75, so that the mounting rod 71 can be in a relatively stable state after installing the material cylinder 3 and the capillary module 4. The limiting plate 77 is fixedly connected to the top end of the mounting rod 71. Through holes are provided on the limiting plate 77 for the insertion of sensors, which does not affect the normal installation of the sensors. The setting of the limiting plate 77 enables the limiting plate 77 to closely adhere to the sensor installation position when the mounting rod 71 is in the installed state, so as to prevent the sensor module 6 from loosening during use, thus affecting the detection quality.

[0080] Furthermore, the extrusion limiting component 74 includes a material collecting box 741, an extrusion plate 742, a limiting frame 743, a clamping rod 744, a ball 745, a first compression spring 746, a lifting plate 747, a hook 748 and a connecting rope 749. The material collecting box 741 is arranged inside the workbench 1. Displacement grooves are opened on both sides of the inner wall of the workbench 1. The extrusion plate 742 is located inside the displacement grooves. The extrusion block 73 is matched with the extrusion plate 742. An extrusion groove is opened on the outer wall of the extrusion plate 742. The limiting frames 743 are symmetrically and fixedly connected to one side of the extrusion plate 742 and are used to limit the displacement of the extrusion block 73. The cross-section of the limiting frame 743 is L-shaped. The two limiting frames 743 can be combined into a bracket that can limit the extrusion block 73 but not the reinforcing rod 72, thereby further improving the stable state of the mounting rod 71 after installing the cartridge 3 and the capillary module 4. At the same time, it can also prevent the limiting plate 77 from being displaced accidentally. With double guarantees, it is more stable. Clamping grooves are opened on the opposite sides of the extrusion plate 742. Clamping holes are equally spaced on both sides of the workbench 1. One end of the clamping rod 744 is slidably inserted into the inner cavity of the clamping hole. The other end of the clamping rod 744 is slidably inserted into the inner cavity of the clamping groove. A slope is opened at one end of the clamping rod 744. The ball 745 is embedded at one end of the clamping rod 744 and is used to fit on the inner wall of the displacement groove. The setting of the ball 745 reduces the friction between the clamping rod 744 and the inner wall of the displacement groove and facilitates displacement. One end of the first compression spring 746 is fixedly connected to the inner wall of the clamping groove. The other end of the first compression spring 746 is fixedly connected to the other end of the clamping rod 744. The first compression spring 746 is always in a compressed state, so as to provide a stable elastic force for the clamping rod 744, so that the clamping rod 744 can closely adhere to the inner wall of the displacement groove and achieve a clamping at the position of the clamping hole. And the two clamps from bottom to top respectively correspond to the disassembly positions of the capillary module 4 and the cartridge 3. Lifting grooves are equally spaced at the top of the material collecting box 741. The lifting plate 747 is located inside the lifting grooves. Placing grooves are equally spaced at the top of the workbench 1. The hook 748 is located inside the placing grooves. The hook 748 cooperates with the protection mechanism 10. One end of the connecting rope 749 is fixedly connected to the hook 748. The other end of the connecting rope 749 passes through the inner wall of the placing groove and is fixedly connected to the lifting plate 747. By connecting the hook 748 with the pull ring 103 in the protection mechanism 10, the electric telescopic rod 102 can be used to provide power, so that the protective shell 101 drives the lifting plate 747 through the connecting rope 749, and then drives the material collecting box 741 to displace through the lifting plate 747, thus eliminating the need for manual force and facilitating automatic disassembly.

[0081] Specifically, the storage mechanism 8 includes a horizontal plate 81, a slider 82, a pulley 83, a synchronous plate 84, a pressing rod 85, a connecting plate 86, and a storage box 87. The horizontal plate 81 is fixedly connected to the outer wall of the workbench 1. A chute is opened at the top of the horizontal plate 81. The slider 82 is slidably inserted into the inner cavity of the chute. The cross-sections of the slider 82 and the chute are both T-shaped. The pulley 83 is rotatably arranged inside the slider 82 through a rotating shaft and is used to fit the inner wall of the chute. The setting of the pulley 83 reduces the friction force when the slider 82 slides inside the chute, enabling the slider 82 to easily slide inside the chute. The synchronous plate 84 is fixedly connected to the top of the pulley 83. The cross-section of the synchronous plate 84 is L-shaped. One end of the pressing rod 85 is fixedly connected to the outer wall of the synchronous plate 84. A first horizontal groove is opened on the outer wall of the workbench 1. The other end of the pressing rod 85 passes through the first horizontal groove and is slidably inserted into the inner cavity of the pressing groove. The cross-section of the pressing groove is as Figure 9 shown, consisting of symmetric inclined segments and a vertical connecting segment. When in the inclined segment, the inclined plane can be used to press the pressing rod 85, thereby driving the synchronous plate 84 to slide on the horizontal plate 81. Before the mounting rod 71 completes the disassembly of the capillary module 4, it enters the vertical connecting segment, thus realizing the splicing of the two storage boxes 87, and continues to displace within the connecting segment to complete the disassembly of the capillary module 4. After disassembly, it can fall into the box formed by the two storage boxes 87, facilitating taking at any time. The connecting plate 86 is fixedly connected to the outer wall of the synchronous plate 84. A second horizontal groove is opened on the outer wall of the workbench 1. The connecting plate 86 is slidably inserted into the inner cavity of the second horizontal groove. The storage box 87 is located inside the workbench 1, and the storage box 87 is fixedly connected to the connecting plate 86.

[0082] Furthermore, a protective pad 88 is fixedly connected to the inner wall of the storage box 87. The protective pad 88 is made of sponge material. The setting of the protective pad 88 provides a protective effect on the capillary module 4 and can prevent the capillary module 4 from being damaged when falling into the storage box 87.

[0083] Specifically, the heat exchange mechanism 9 includes a preheating box 91, a box cover 92, a preheating hopper 93, a blower 94, and a connecting pipe 95. The preheating box 91 is fixedly installed on both sides of the workbench 1. The box cover 92 is arranged at the top of the preheating box 91. The box cover 92 can limit the preheating hopper 93 when the preheating hopper 93 is placed inside the preheating box 91. The preheating hopper 93 is arranged inside the preheating box 91 and is used to place the material to be tested. The blower 94 is fixedly installed at the bottom of the preheating box 91 and is used to guide air into the preheating box 91. The blower 94 is electrically connected to an external power supply through an external switch. One end of the connecting pipe 95 is fixedly inserted and connected to the heat exchange tank, and the other end of the connecting pipe 95 is fixedly connected to the input end of the blower 94. The connecting pipe 95 is a flexible hose made of heat-insulating material. Thus, the blower 94 can suck air through the connecting pipe 95, so that a negative pressure can be generated inside the U-shaped heat exchange tank, and thus the external air can be pumped in to achieve heat exchange, enabling the barrel 3 and the capillary module 4 to cool down quickly. At the same time, the heat-exchanged air can preheat the next batch of materials to be tested inside the preheating hopper 93, facilitating the temperature rise detection of the next batch of materials.

[0084] Specifically, the protection mechanism 10 includes a protective shell 101, an electric telescopic rod 102, and a pull ring 103. The protective shell 101 is sleeved outside the barrel 3, and the pressing rod 5 is slidably inserted through the protective shell 101. The protective shell 101 is made of a transparent material. The transparent protective shell 101 facilitates observing the extrusion of the material by the pressing rod 5. The electric telescopic rod 102 is arranged inside the frame 2. One end of the electric telescopic rod 102 is fixedly connected to the protective shell 101. The electric telescopic rod 102 is electrically connected to an external power supply through an external switch and can drive the protective shell 101 to move vertically. The pull rings 103 are fixedly connected to both sides of the protective shell 101. The pull rings 103 cooperate with the hooks 748. By selectively connecting or disconnecting the pull rings 103 from the hooks 748, power can be provided when the barrel 3 and the capillary module 4 need to be disassembled, completing automatic disassembly. When disassembly is not required, they are not connected, and only power is provided to the protective shell 101 to achieve lifting.

[0085] The working principle of the present invention:

[0086] After measuring the material, the blower 94 can be started. The blower 94 can suck air through the connecting pipe 95, so that a negative pressure can be generated inside the U-shaped heat exchange tank, and thus the external air can be pumped in to achieve heat exchange, enabling the barrel 3 and the capillary module 4 to cool down quickly. At the same time, the heat-exchanged air can preheat the next batch of materials to be tested inside the preheating hopper 93;

[0087] After cooling down to an appropriate temperature, the pull ring 103 can be connected to the hook 748, so that the protective shell 101 is lifted by the electric telescopic rod 102 and no longer covers the material cylinder 3. At the same time, the hook 748 drives the lifting plate 747 through the connecting rope 749 to drive the material receiving box 741 to rise, so that the extrusion plate 742 is displaced synchronously, the extrusion block 73 can slide out of the limiting frame 743, and displace horizontally under the inclined plane of the extrusion plate 742, so that the reinforcing rod 72 disengages from the gap between the limiting frames 743 and drives the mounting rod 71 to displace horizontally. At the same time, the extrusion groove also extrudes to drive the extrusion rod 85 to drive the synchronous plate 84 to displace, so that the two storage boxes 87 are spliced together;

[0088] When the clamping rod 744 is clamped with the first clamping hole located below, at this time, the mounting rod 71 disengages from the mounting groove of the capillary module 4, and the capillary module 4 will fall inside the two storage boxes 87 that have been pre-assembled, and then cleaning can be carried out to detect the next batch of materials;

[0089] If it is necessary to disassemble the material cylinder 3, continue to displace. When the clamping rod 744 is clamped with the second clamping hole, at this time, the extrusion plate 742 will completely extrude the mounting rod 71 out of the mounting groove of the material cylinder 3 through the extrusion block 73, so that the limit on the material cylinder 3 can be released, and the material cylinder 3 can be removed and replaced.

[0090] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A capillary rheometer, characterized in that, Including: A workbench (1), with a frame (2) fixedly connected to the top of the workbench (1); A barrel (3), a through groove is opened at the top of the workbench (1), and the barrel (3) is slidably inserted into the inner cavity of the through groove; A capillary module (4), a groove is opened at the bottom of the barrel (3), and the capillary module (4) is slidably inserted into the inner cavity of the groove; A pressure rod (5), which is fixedly installed at the bottom of the frame (2) and is used to extrude the materials in the barrel (3); A sensor module (6), which is symmetrically installed on both sides of the barrel (3); A positioning mechanism (7), which is arranged inside the workbench (1) and is used to limit the displacement of the barrel (3) and the capillary module (4); A receiving mechanism (8), which is arranged inside the workbench (1) and is used to receive the disassembled capillary module (4); A heat exchange mechanism (9), which is connected to the positioning mechanism (7) and is used to reduce the temperature of the barrel (3) and the capillary module (4); A protection mechanism (10), which is arranged on the frame (2) and is used to provide power to the positioning mechanism (7) and isolate the barrel (3).

2. The capillary rheometer according to claim 1, wherein The positioning mechanism (7) includes: A mounting rod (71), mounting grooves are opened at the bottoms of both the barrel (3) and the capillary module (4), the mounting rod (71) is slidably inserted into the inner cavity of the mounting groove, the cross-section of the mounting rod (71) is trapezoidal, and a heat exchange groove is opened inside the mounting rod (71); A reinforcing rod (72), which is fixedly connected to the bottom of the mounting rod (71); An extrusion block (73), which is fixedly connected to the bottom of the reinforcing rod (72), and an inclined surface is opened at the bottom of the extrusion block (73); An extrusion limiting component (74), which is arranged inside the workbench (1) and is used to control the displacement of the mounting rod (71).

3. A capillary rheometer according to claim 2, wherein The extrusion limiting component (74) includes: A material receiving box (741), which is arranged inside the workbench (1); An extrusion plate (742), displacement grooves are opened on both sides of the inner wall of the workbench (1), the extrusion plate (742) is located inside the displacement grooves, the extrusion block (73) cooperates with the extrusion plate (742), and an extrusion groove is opened on the outer wall of the extrusion plate (742); A limiting frame (743), which is symmetrically and fixedly connected to one side of the extrusion plate (742) and is used to limit the displacement of the extrusion block (73).

4. A capillary rheometer according to claim 3, wherein The extrusion limiting component (74) further includes: A clamping rod (744), clamping grooves are opened on the opposite sides of the extrusion plate (742), clamping holes are equidistantly opened on both sides of the workbench (1), one end of the clamping rod (744) is slidably inserted into the inner cavity of the clamping hole, the other end of the clamping rod (744) is slidably inserted into the inner cavity of the clamping groove, and an inclined surface is opened at one end of the clamping rod (744); A ball (745) is embedded at one end of the clamping rod (744) and is used to fit against the inner wall of the displacement groove; A first compression spring (746), one end of the first compression spring (746) is fixedly connected to the inner wall of the clamping groove, and the other end of the first compression spring (746) is fixedly connected to the other end of the clamping rod (744).

5. The capillary rheometer according to claim 3, characterized in that, The extrusion limiting assembly (74) further includes: A lifting plate (747), lifting grooves are equidistantly opened at the top of the material receiving box (741), and the lifting plate (747) is located inside the lifting grooves; A hook (748), placing grooves are equidistantly opened at the top of the workbench (1), the hook (748) is located inside the placing grooves, and the hook (748) cooperates with the protection mechanism (10); A connecting rope (749), one end of the connecting rope (749) is fixedly connected to the hook (748), and the other end of the connecting rope (749) passes through the inner wall of the placing groove and is fixedly connected to the lifting plate (747).

6. A capillary rheometer according to claim 2, characterized in that, The positioning mechanism (7) further includes: A limiting block (75), the limiting block (75) is fixedly connected to the top of the mounting rod (71), a limiting groove is opened at the top of the inner wall of the displacement groove, and the limiting block (75) is slidably inserted into the inner cavity of the limiting groove. The cross-section of the limiting block (75) is T-shaped; A second compression spring (76), one end of the second compression spring (76) is fixedly connected to the limiting block (75), and the other end of the second compression spring (76) is fixedly connected to the inner wall of the limiting groove; A limiting plate (77), the limiting plate (77) is fixedly connected to the top of the mounting rod (71), and a through hole is opened on the limiting plate (77).

7. A capillary rheometer according to claim 3, characterized in that, The storage mechanism (8) includes: A cross plate (81), the cross plate (81) is fixedly connected to the outer wall of the workbench (1); A slider (82), a sliding groove is opened at the top of the cross plate (81), and the slider (82) is slidably inserted into the inner cavity of the sliding groove; A pulley (83), the pulley (83) is rotatably arranged inside the slider (82) through a rotating shaft and is used to fit against the inner wall of the sliding groove; A synchronous plate (84), the synchronous plate (84) is fixedly connected to the top of the pulley (83), and the cross-section of the synchronous plate (84) is L-shaped; An extrusion rod (85), one end of the extrusion rod (85) is fixedly connected to the outer wall of the synchronous plate (84), a first horizontal groove is opened on the outer wall of the workbench (1), and the other end of the extrusion rod (85) passes through the first horizontal groove and is slidably inserted into the inner cavity of the extrusion groove; A connecting plate (86), the connecting plate (86) is fixedly connected to the outer wall of the synchronous plate (84), a second horizontal groove is opened on the outer wall of the workbench (1), and the connecting plate (86) is slidably inserted into the inner cavity of the second horizontal groove; A storage box (87), the storage box (87) is located inside the workbench (1), and the storage box (87) is fixedly connected to the connecting plate (86).

8. A capillary rheometer according to claim 7, characterized in that, A protective pad (88) is fixedly connected to the inner wall of the storage box (87), and the protective pad (88) is made of sponge material.

9. The capillary rheometer according to claim 2, wherein The heat exchange mechanism (9) includes: Preheating box (91), the preheating box (91) is fixedly installed on both sides of the workbench (1); Box cover (92), the box cover (92) is arranged at the top of the preheating box (91); Preheating hopper (93), the preheating hopper (93) is arranged inside the preheating box (91) for placing the material to be tested; Fan (94), the fan (94) is fixedly installed at the bottom of the preheating box (91) for guiding air into the preheating box (91); Connecting pipe (95), one end of the connecting pipe (95) is fixedly inserted and connected with the heat exchange tank, and the other end of the connecting pipe (95) is fixedly connected with the input end of the fan (94).

10. A capillary rheometer according to claim 5, characterized in that, The protection mechanism (10) includes: Protection shell (101), the protection shell (101) is sleeved outside the material cylinder (3), the pressure rod (5) is slidably inserted through the protection shell (101), and the protection shell (101) is made of transparent material; Electric telescopic rod (102), the electric telescopic rod (102) is arranged inside the frame (2), and one end of the electric telescopic rod (102) is fixedly connected with the protection shell (101); Pulling ring (103), the pulling ring (103) is fixedly connected to both sides of the protection shell (101), and the pulling ring (103) cooperates with the hook (748).

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