Thermal aging test device for heat-resistant polypropylene

Abstract

The utility model discloses a thermal aging test device for heat-resistant polypropylene, and belongs to the technical field of thermal aging test instruments. The thermal aging test device for the heat-resistant polypropylene comprises a reaction device body, a gas conveying bin is fixedly installed at the top of the reaction device body, a one-way valve is fixedly installed at the top of the reaction device body, and a first gas conveying opening and a second gas conveying opening are formed in the top of the gas conveying bin; an adjusting assembly is arranged in the air conveying bin and comprises an adjusting handle, the adjusting handle is rotationally connected with the air conveying bin, a sealing baffle is fixedly connected to the side face of the adjusting handle, a hydraulic bin is fixedly connected and penetrates through the interior of the adjusting handle, and an operating rod is slidably connected to a piston at one end of the hydraulic bin. A piston at the other end of the hydraulic bin is in sliding connection with a transmission rod. The device is used for solving the problem that the introduction rate of oxygen is difficult to adjust to carry out a contrast experiment.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal aging experimental instruments, in particular to a thermal aging testing device for heat-resistant polypropylene. Background Art

[0002] The rapid determination method of the long-term heat aging performance of heat-resistant polypropylene generally requires a test at 150°C for 1000 hours, which takes a long time. Alternatively, a high temperature of 220°C can be used to test the oxidation induction time OIT, which can be quickly determined within 1 hour.

[0003] However, when using a high temperature of 220°C for measurement, the heat-resistant polypropylene may react with the residual oxygen in the reaction device during the heating process, thereby affecting the measurement results. In this case, an inert gas is often introduced into the device before heating to exclude oxygen, and then oxygen is introduced to the device after heating to 220°C for measurement. During the measurement, it is difficult to adjust the oxygen introduction rate to conduct a comparative experiment, which makes the device less easy to use. Utility Model Content

[0004] The utility model aims to solve the problem that it is difficult to adjust the oxygen introduction rate to conduct comparative experiments in the prior art. To this end, the utility model proposes a heat aging test device for heat-resistant polypropylene, which can make the device easier to use.

[0005] A heat aging test device for heat-resistant polypropylene comprises a reaction device body, a gas delivery bin is fixedly installed on the top of the reaction device body, a one-way valve is fixedly installed on the top of the reaction device body, and a gas delivery port 1 and a gas delivery port 2 are opened on the top of the gas delivery bin;

[0006] An adjusting component is provided inside the gas delivery warehouse, and the adjusting component includes an adjusting handle, the adjusting handle is rotatably connected to the gas delivery warehouse, a sealing baffle is fixedly connected to the side of the adjusting handle, a hydraulic warehouse is fixedly connected inside the adjusting handle and penetrates therethrough, a joystick is slidably connected to the piston at one end of the hydraulic warehouse, a transmission rod is slidably connected to the piston at the other end of the hydraulic warehouse, an air pressure warehouse is fixedly connected inside the gas delivery warehouse, an air bag is fixedly connected to one end of the air pressure warehouse, a push rod is slidably connected to the piston at the other end of the air pressure warehouse, and an arc-shaped baffle is fixedly connected to the rear end of the push rod.

[0007] Furthermore, the airbag is located at the bottom of the transmission rod, and the airbag is in contact with the transmission rod, so that the transmission rod moves downward to squeeze the airbag.

[0008] Furthermore, the arc-shaped baffle is located at the front end of the sealing baffle, and the arc-shaped baffle is semicircular, so that when the sealing baffle rotates, the arc-shaped baffle can move backward.

[0009] Furthermore, a clamping assembly is provided at the top of the adjustment handle, and the clamping assembly includes a torsion spring rod, the torsion spring rod is rotatably connected to the adjustment handle, the top of the torsion spring rod is fixedly connected to a rotating rod, the side of the rotating rod is fixedly connected to a clamping block, and a fixing groove is opened on the side of the operating lever.

[0010] Furthermore, two of the card blocks are provided, and the two card blocks are symmetrically distributed with respect to the joystick.

[0011] Furthermore, two groups of the fixing grooves are provided, and the cross-sectional shape of the fixing grooves is the same as the cross-sectional shape of the clamping block, so that the clamping block can be placed in the fixing groove to clamp the joystick.

[0012] The difference from the prior art is that the beneficial effects of this application are:

[0013] (1) When the oxygen introduction rate needs to be changed in the heat aging test device of heat-resistant polypropylene, the operating lever is moved downward to cooperate with the hydraulic chamber to drive the transmission rod to move downward, so that the transmission rod squeezes the airbag and cooperates with the air pressure chamber to drive the push rod to move the arc baffle backward. The arc baffle moves to the bottom of the second gas delivery port to block half of the second gas delivery port, thereby reducing the oxygen introduction rate and making the device easier to use.

[0014] (2) In the heat aging test device for heat-resistant polypropylene, when the joystick needs to be moved, the rotating rod is rotated with the torsion spring rod as the axis, so that the rotating rod drives the clamping block to move. At this time, the clamping block is moved out of the fixed groove, and the restriction on the joystick can be cancelled. Similarly, when the joystick does not need to be moved, the joystick is clamped by the clamping block, reducing the possibility of accidental touch or inadvertent movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0016] Figure 1 It is a schematic diagram of the overall appearance of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall sectional three-dimensional structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the adjustment component of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the clamping assembly of the utility model.

[0020] In the figure:

[0021] 100, reaction device body; 200, gas delivery chamber; 300, one-way valve; 600, gas delivery port 1; 700, gas delivery port 2;

[0022] 400, adjustment assembly; 410, adjustment handle; 420, sealing baffle; 430, hydraulic chamber; 440, joystick; 450, transmission rod; 460, air chamber; 470, air bag; 480, push rod; 490, arc baffle;

[0023] 500, clamping assembly; 510, torsion spring rod; 520, rotating rod; 530, clamping block; 540, fixing groove. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0026] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0028] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Example

[0030] See also Figure 1-Figure 3 As shown in the figure, a heat aging test device for heat-resistant polypropylene includes a reaction device body 100, a gas delivery bin 200 is fixedly installed on the top of the reaction device body 100, a check valve 300 is fixedly installed on the top of the reaction device body 100, and a gas delivery port 1 600 and a gas delivery port 2 700 are opened on the top of the gas delivery bin 200;

[0031] The gas delivery bin 200 is provided with an adjustment component 400, which includes an adjustment handle 410, which is rotatably connected to the gas delivery bin 200. Among them, a sealing baffle 420 is fixedly connected to the side of the adjustment handle 410. Heat-resistant polypropylene is placed in the reaction device body 100, and then inert gas is introduced into the reaction device body 100 through the gas delivery port 1 600 and the gas delivery bin 200, and the oxygen in the reaction device body 100 is discharged in conjunction with the one-way valve 300. Then, the reaction device body 100 is heated to a specified temperature, and the adjustment handle 410 is rotated so that the adjustment handle 410 drives the sealing baffle 420 fixedly connected thereto to move from the bottom of the gas delivery port 2 700 to the gas delivery port 1 600. At this time, the introduction of inert gas is stopped, and then oxygen is introduced into the reaction device body 100 through the gas delivery port 2 700 to conduct experiments. In this way, it is possible to prevent the residual oxygen in the reaction device body 100 from starting to react prematurely during the heating process, thereby improving the accuracy of the experimental results. The adjusting handle 410 is fixedly connected inside and penetrated by a hydraulic chamber 430, one end of the hydraulic chamber 430 is slidably connected to a joystick 440, and the other end of the hydraulic chamber 430 is slidably connected to a transmission rod 450. When the oxygen introduction rate needs to be changed, the joystick 440 is moved downward to cooperate with the hydraulic chamber 430 that is slidably connected to the joystick 440 piston, so that the pressure in the hydraulic chamber 430 increases, driving the transmission rod 450 that is slidably connected to the hydraulic chamber 430 piston to move downward. The gas delivery chamber 200 is fixedly connected to a pneumatic chamber 460, one end of the pneumatic chamber 460 is fixedly connected to an airbag 470, the airbag 470 is located at the bottom of the transmission rod 450, the airbag 470 is in contact with the transmission rod 450, and the other end of the pneumatic chamber 460 is slidably connected to a push rod 480. When the transmission rod 450 moves downward, the transmission rod 450 squeezes the airbag 470, and the gas in the airbag 470 is passed into the air pressure chamber 460 fixedly connected thereto, so that the pressure in the air pressure chamber 460 increases, driving the push rod 480 that is slidably connected to the piston of the air pressure chamber 460 to move. The rear end of the push rod 480 is fixedly connected with an arc-shaped baffle 490, which is located at the front end of the sealing baffle 420 and is semicircular. When the push rod 480 moves backward, the push rod 480 drives the arc-shaped baffle 490 fixedly connected thereto to move backward, and the arc-shaped baffle 490 moves to the bottom of the gas delivery port 2 700, blocking half of the gas delivery port 2 700. This reduces the oxygen introduction rate, making the device easier to use.

[0032] When in use, heat-resistant polypropylene is placed in the reaction device body 100, and then inert gas is introduced into the reaction device body 100 through the gas inlet 1 600 and the gas inlet bin 200, and the one-way valve 300 is used to discharge the oxygen in the reaction device body 100, and then the reaction device body 100 is heated to a specified temperature, and the adjustment handle 410 is turned so that the adjustment handle 410 drives the sealing baffle 420 fixedly connected thereto to move from the bottom of the gas inlet 2 700 to the gas inlet 1 600, at which time the introduction of inert gas is stopped, and then oxygen is introduced into the reaction device body 100 through the gas inlet 2 700 to conduct experiments; and when it is necessary to change the oxygen introduction rate, the one-way valve 300 is used to adjust the oxygen introduction rate. By moving the joystick 440 downward, in cooperation with the hydraulic chamber 430 that is slidably connected to the piston of the joystick 440, the pressure in the hydraulic chamber 430 increases, driving the transmission rod 450 that is slidably connected to the piston of the hydraulic chamber 430 to move downward, so that the transmission rod 450 squeezes the airbag 470, and the gas in the airbag 470 is passed into the air pressure chamber 460 that is fixedly connected to it, so that the pressure in the air pressure chamber 460 increases, driving the push rod 480 that is slidably connected to the piston of the air pressure chamber 460 to move, so that the push rod 480 drives the arc baffle 490 that is fixedly connected to it to move backward, and the arc baffle 490 moves to the bottom of the gas delivery port 2 700, blocking half of the gas delivery port 2 700.

[0033] For further tightening of the device, see Figure 1-Figure 4 As shown in the figure, a clamping assembly 500 is provided at the top of the adjustment handle 410, and the clamping assembly 500 includes a torsion spring rod 510, which is rotatably connected to the adjustment handle 410. Among them, a rotating rod 520 is fixedly connected to the top of the torsion spring rod 510, and a clamping block 530 is fixedly connected to the side of the rotating rod 520. There are two clamping blocks 530, and the two clamping blocks 530 are symmetrically distributed about the operating rod 440. When the operating rod 440 needs to be moved, the rotating rod 520 fixedly connected to the torsion spring rod 510 is rotated with the torsion spring rod 510 as the axis, so that the rotating rod 520 drives the clamping block 530 fixedly connected thereto to move. A fixing groove 540 is provided on the side of the operating rod 440, and there are two groups of fixing grooves 540. The cross-sectional shape of the fixing groove 540 is the same as the cross-sectional shape of the clamping block 530. When the clamping block 530 is removed from the fixing slot 540, the restriction on the joystick 440 can be cancelled; similarly, when the joystick 440 is moved, the torsion spring rod 510 is released, so that the clamping block 530 is reset under the action of the torsion spring rod 510, and the joystick 440 is clamped. That is, when the joystick 440 does not need to be moved, the joystick 440 is clamped by the clamping block 530, which reduces the possibility of accidental touch or inadvertent movement.

[0034] During use, when the joystick 440 needs to be moved, the rotating rod 520 fixedly connected to the torsion spring rod 510 is rotated with the torsion spring rod 510 as the axis, so that the rotating rod 520 drives the clamping block 530 fixedly connected to it to move. At this time, the clamping block 530 is moved out of the fixing groove 540, and the restriction on the joystick 440 can be cancelled; similarly, after the movement of the joystick 440 is completed, the torsion spring rod 510 is released, so that the clamping block 530 is immediately reset under the action of the torsion spring rod 510, clamping the joystick 440.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat aging test device for heat-resistant polypropylene, comprising a reaction device body (100), a gas delivery bin (200) fixedly mounted on the top of the reaction device body (100), a one-way valve (300) fixedly mounted on the top of the reaction device body (100), and a first gas delivery port (600) and a second gas delivery port (700) opened on the top of the gas delivery bin (200); Features: An adjusting assembly (400) is arranged inside the gas delivery chamber (200), and the adjusting assembly (400) comprises an adjusting handle (410), the adjusting handle (410) is rotatably connected to the gas delivery chamber (200), a sealing baffle (420) is fixedly connected to the side of the adjusting handle (410), a hydraulic chamber (430) is fixedly connected inside the adjusting handle (410) and penetrates therethrough, a piston at one end of the hydraulic chamber (430) is slidably connected to a joystick (440), a piston at the other end of the hydraulic chamber (430) is slidably connected to a transmission rod (450), a pneumatic chamber (460) is fixedly connected inside the gas delivery chamber (200), an air bag (470) is fixedly connected to one end of the pneumatic chamber (460), a push rod (480) is slidably connected to the other end of the piston of the pneumatic chamber (460), and a rear end of the push rod (480) is fixedly connected to an arc-shaped baffle (490).

2. A heat aging test device for heat-resistant polypropylene according to claim 1, characterized in that: The airbag (470) is located at the bottom of the transmission rod (450), and the airbag (470) is in contact with the transmission rod (450).

3. A heat aging test device for heat-resistant polypropylene according to claim 1, characterized in that: The arc-shaped baffle (490) is located at the front end of the sealing baffle (420), and the arc-shaped baffle (490) is semicircular.

4. The heat aging test device for heat-resistant polypropylene according to claim 1, characterized in that: A clamping assembly (500) is arranged on the top of the adjusting handle (410), and the clamping assembly (500) comprises a torsion spring rod (510), the torsion spring rod (510) is rotatably connected to the adjusting handle (410), a rotating rod (520) is fixedly connected to the top of the torsion spring rod (510), a clamping block (530) is fixedly connected to the side of the rotating rod (520), and a fixing groove (540) is provided on the side of the operating rod (440).

5. A heat aging test device for heat-resistant polypropylene according to claim 4, characterized in that: Two of the clamping blocks (530) are provided, and the two clamping blocks (530) are symmetrically distributed with respect to the operating rod (440).

6. A heat aging test device for heat-resistant polypropylene according to claim 4, characterized in that: Two groups of the fixing grooves (540) are provided, and the cross-sectional shape of the fixing grooves (540) is the same as the cross-sectional shape of the clamping block (530).

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