Waste gas suction device for rotational rheometer

Abstract

The utility model discloses a waste gas suction device for a rotational rheometer, which comprises a suction assembly, one end of the suction assembly is connected with a rotational rheometer main body, an adjusting assembly is arranged on the suction assembly, and the suction assembly is matched with the adjusting assembly, so that the exhaust gas is sucked into the rotational rheometer main body. Smoke generated by the rotational rheometer main body in a high-temperature test process can be effectively prevented from entering the inner wall of a bearing of a machine head, small molecular substance accumulation caused by a long-term high-temperature experiment is prevented, and the situation that test data fluctuates greatly and is not repeated under low shear due to the fact that a friction correction parameter is larger than the upper limit of a normal range in the rotating process of the bearing is avoided. In order to prevent low-boiling-point substances from adhering to the wall of a bearing when the rotational rheometer main body is subjected to high-temperature testing, a suction device is additionally arranged on a high-temperature clamp for testing high polymer melt, so that waste gas is sucked and transferred into a collecting device by the device before reaching a machine head, the bearing in the machine head can be protected, and the service life of the bearing can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotating rheometer technical field, specifically, relate to a kind of exhaust suction device for rotating rheometer. BACKGROUND

[0002] Rotating rheometer is a kind of conventional fluid detection instrument, mainly to the stress and viscoelasticity of fluid and polymer melt are measured. Main method is to place fluid or polymer melt on the lower plate of clamp, the upper plate of clamp is connected air bearing by screw, air bearing is driven by the test parameters set on software slowly rotates, so that the data of fluid or polymer melt is obtained. Because rotating rheometer is suitable for the test under low shear, so the rotation accuracy of air bearing is very high.

[0003] Small molecule substance with low boiling point can be added in polymer, or unstable at test temperature, long-term test of polymer melt can cause some volatile substances to be converted into flue gas because of too high temperature, enter bearing inner wall, and condense after cooling. The thickness of small molecule substance or substance after high-temperature degradation of polymer increases in bearing inner wall for a long time, which causes abnormal rotation of bearing during test, and experimental test data is affected. And the bearing of rotating rheometer is the core component of the instrument, and the design and manufacturing precision is very high, and there is no technology to disassemble and check and repair it in China. If the bearing of rotating rheometer has a problem, the whole component needs to be replaced, and the loss value is great.

[0004] However, the rotating rheometer (1) on the market does not have an exhaust suction device, if the test temperature rises to 300 DEG C, without adding exhaust suction device, the outside of the protective shell on the surface of the machine head is subjected to heat conduction and radiation, and the temperature can reach about 60 DEG C, and because the temperature is higher than room temperature, and there is no nitrogen outlet, the high-temperature nitrogen and exhaust gas generated by the heated polymer material enter the bearing inner wall, and condense after cooling, long-term accumulation causes abnormal rotation of bearing during test, and experimental data is affected.

[0005] (2) only with the hole of purging exhaust gas, there is compressed air ring blowing around high-temperature heating jacket, but due to the large ring blowing air flow, disturbance is generated to the clamp moving at low speed, so that the data of low torque during test cannot be measured.

[0006] For the problems in the related art, no effective solution has been proposed so far. UTILITY MODEL CONTENTS

[0007] In view of the problems in the related art, the utility model provides an exhaust suction device for rotating rheometer to overcome the above technical problems existing in the prior art.

[0008] Therefore, the utility model adopts the following specific technical solutions:

[0009] The exhaust suction device for the rotary rheometer comprises a suction assembly, one end of the suction assembly is connected with a rotary rheometer body, and an adjusting assembly is arranged on the suction assembly.

[0010] Further, in order to better the exhaust suction effect, the suction assembly comprises a suction port, the suction port is arranged on the rotary rheometer body, one end of the suction port is connected with an airflow pipeline, and one end of the airflow pipeline is provided with a vacuum generator.

[0011] Further, in order to better guarantee the exhaust treatment effect, the vacuum generator is connected with a compressed air pipeline, a connecting cylinder is arranged between the suction port and the airflow pipeline, soft clamps are arranged on the suction port, the airflow pipeline and the connecting cylinder, one end of the suction port is provided with an arc-shaped contact surface, and the arc-shaped contact surface is matched with the rotary rheometer body.

[0012] Further, in order to better guarantee the adjusting effect of the device, the adjusting assembly comprises a base, first and second connecting clamping plates are arranged on the base, an adjusting rod is arranged on the second connecting clamping plate, and one end of the adjusting rod is provided with an adjusting knob.

[0013] Further, in order to better guarantee the angle, height and fixing effect, a support guide rod is arranged on the adjusting knob, one end of the support guide rod is provided with a support fixing clamp, and part of the support fixing clamp is arranged on the connecting cylinder.

[0014] Further, in order to better guarantee the adjustment of different positions of the device, first and second five-star handles are threadedly connected to the support fixing clamp.

[0015] Further, in order to better guarantee the adjusting effect of the device, the first connecting clamping plate is connected with the second connecting clamping plate through bolts, and one side of the first connecting clamping plate is matched with the base.

[0016] The device has the advantages that: the suction assembly and the adjusting assembly are matched with each other, smoke generated in the high-temperature test process of the rotary rheometer body can be effectively prevented from entering the inner wall of the bearing of the machine head, long-term high-temperature experiments can be prevented from causing accumulation of small molecules, friction correction parameters in the rotating process of the bearing can be prevented from being greater than the upper limit of the normal range, test data can be prevented from fluctuating greatly and being not repeated under low shear, the bearing wall of the rotary rheometer body can be prevented from adhering low-boiling-point substances when the rotary rheometer body is subjected to high-temperature test, the suction device is added to the high-temperature clamp for testing polymer melt, exhaust gas can be suctioned and transferred to the collecting device by the device before reaching the machine head, the bearing in the machine head can be protected, and the service life of the bearing is increased. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 is a waste gas suction device structure schematic diagram for a rotary rheometer according to an embodiment of the present application Figure 1 ;

[0019] Figure 2 is a waste gas suction device structure schematic diagram for a rotary rheometer according to an embodiment of the present application Figure 2 ;

[0020] Figure 3 is a waste gas suction device structure schematic diagram for a rotary rheometer according to an embodiment of the present application Figure 3 ;

[0021] Figure 4 is a suction assembly structure schematic diagram of a waste gas suction device for a rotary rheometer according to an embodiment of the present application Figure 1 ;

[0022] Figure 2 is a suction assembly structure schematic diagram of a waste gas suction device for a rotary rheometer according to an embodiment of the present application Figure 6 ;

[0023] Figure 1 is a regulating assembly structure schematic diagram of a waste gas suction device for a rotary rheometer according to an embodiment of the present application Figure 7 ;

[0024] Figure 2 is a regulating assembly structure schematic diagram of a waste gas suction device for a rotary rheometer according to an embodiment of the present application Figure 8 ;

[0025] Figure 3 is a regulating assembly structure schematic diagram of a waste gas suction device for a rotary rheometer according to an embodiment of the present application Figures 1-8 .

[0026] In the drawings:

[0027] 1, the main body of the rotational rheometer; 2, the suction assembly; 201, the suction port; 202, the airflow pipeline; 203, the vacuum generator; 204, the compressed air pipeline; 205, the soft clamp; 206, the connecting cylinder; 3, the adjusting assembly; 301, the base; 302, the first connecting clamping plate; 303, the second connecting clamping plate; 304, the adjusting rod; 305, the adjusting knob; 306, the support guide rod; 307, the support fixing clamp; 308, the first five-star handle; 309, the second five-star handle; 4, the arc contact surface. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0029] According to the embodiments of the utility model, a waste gas suction device for a rotational rheometer is provided.

[0030] Embodiment one;

[0031] As Figures 1-8 shown, according to the waste gas suction device for the rotational rheometer of the utility model embodiments, including suction assembly 2, one end of suction assembly 2 is connected with the main body of rotational rheometer 1, and suction assembly 2 is used to suck the waste gas of the main body of rotational rheometer 1, and adjusting assembly 3 is arranged on suction assembly 2, for adjusting the angle, height, distance of the device.

[0032] Embodiment two;

[0033] As Figures 1-8 shown, according to the waste gas suction device for the rotational rheometer of the utility model embodiments, suction assembly 2 includes suction port 201, which is used to fit with the hollow part above the high-temperature clamp of the main body of rotational rheometer 1, and suction port 201 is arranged on the main body of rotational rheometer 1, one end of suction port 201 is connected with airflow pipeline 202, which is used to connect suction port 201 and vacuum generator 203, one end of airflow pipeline 202 is provided with vacuum generator 203, which is used to connect airflow pipeline 202 and compressed air pipeline 204 to discharge the waste gas collected from suction port 201, vacuum generator 203 is connected with compressed air pipeline 204, connecting cylinder 206 is arranged between suction port 201 and airflow pipeline 202, two soft clamps 205 are arranged on suction port 201, airflow pipeline 202 and connecting cylinder 206, one end of suction port 201 is provided with arc contact surface 4, and arc contact surface 4 is matched with the main body of rotational rheometer 1.

[0034] In actual application, through the cooperation of the suction port 201, the air flow pipeline 202, the compressed air pipeline 204 and the vacuum generator 203, the smoke generated in the high-temperature test process of the rotary rheometer main body 1 can be effectively prevented from entering the bearing inner wall of the machine head, the accumulation of small molecules caused by long-term high-temperature experiments can be prevented, and the friction correction parameter of the bearing during rotation can be prevented from being greater than the upper limit of the normal range, so that the test data fluctuates greatly and is not repeated at low shear, and the exhaust gas suction effect can be ensured through the cooperation of the connecting cylinder 206, the soft hoop 205 and the arc-shaped contact surface 4.

[0035] Embodiment three;

[0036] As ​ shown, the exhaust gas suction device for the rotary rheometer according to the embodiment of the utility model, adjusting assembly 3 including base 301, base 301 on being provided with first connecting clamping plate 302 and second connecting clamping plate 303, first connecting clamping plate 302 passes through bolt and second connecting clamping plate 303 are connected, and the side of first connecting clamping plate 302 is adapted with base 301, second connecting clamping plate 303 on being provided with adjusting lever 304, adjusting lever 304 one end is provided with adjusting knob 305, for adjusting adjusting lever 304 and base 301 distance, adjusting knob 305 on being provided with support guide rod 306, support guide rod 306 is set up as stainless steel thick wall grinding pipe, support guide rod 306 one end is provided with pillar fixed clamp 307, and the part of pillar fixed clamp 307 is set up on connecting cylinder 206, and pillar fixed clamp 307 on through the thread connection has first pentagonal star handle 308 and second pentagonal star handle 309.

[0037] In actual application, through the cooperation of the base 301, the first connecting clamping plate 302 and the second connecting clamping plate 303, the adjusting lever 304, the adjusting knob 305, the support guide rod 306, the pillar fixed clamp 307, the first pentagonal star handle 308 and the second pentagonal star handle 309, the suction port 201 can be adjusted up and down and the angle of the suction port 201.

[0038] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process will be described in detail below.

[0039] With the technical scheme of the utility model, the smoke generated in the high-temperature test of the rotary flow rheometer main body 1 can be effectively prevented from entering the inner wall of the bearing of the machine head, the accumulation of small molecules caused by long-term high-temperature experiments can be prevented, the friction correction parameter of the bearing during rotation can be prevented from being greater than the upper limit of the normal range, the test data can be prevented from fluctuating greatly and being not repeated under low shear, the exhaust suction effect can be ensured through the cooperation of the connecting cylinder 206, the soft hoop 205 and the arc-shaped contact surface 4, and the suction port 201 can be adjusted up and down and the angle of the suction port 201 through the cooperation of the base 301, the first and second connecting clamping plates 302 and 303, the adjusting rod 304, the adjusting knob 305, the support guide rod 306, the support pillar fixing clamp 307, the first and second five-pointed star handles 308 and 309.

[0040] The above merely describes the preferred embodiments of the utility model and is not intended to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waste gas suction device for a rotational rheometer, comprising a suction assembly (2), characterized in that: One end of the suction assembly (2) is connected with the rotary rheometer main body (1), and an adjusting assembly (3) is arranged on the suction assembly (2); The adjusting assembly (3) comprises a base (301), a first connecting clamping plate (302) and a second connecting clamping plate (303) are arranged on the base (301), an adjusting rod (304) is arranged on the second connecting clamping plate (303), and an adjusting knob (305) is arranged at one end of the adjusting rod (304).

2. A waste gas suction device for a rotational rheometer according to claim 1, characterized in that The suction assembly (2) comprises a suction port (201), the suction port (201) is arranged on the rotary rheometer main body (1), one end of the suction port (201) is connected with an airflow pipeline (202), and a vacuum generator (203) is arranged at one end of the airflow pipeline (202).

3. A waste gas suction device for a rotational rheometer according to claim 2, characterized in that The vacuum generator (203) is connected with a compressed air pipeline (204), a connecting cylinder (206) is arranged between the suction port (201) and the airflow pipeline (202), soft clamps (205) are arranged on the suction port (201), the airflow pipeline (202) and the connecting cylinder (206), an arc-shaped contact surface (4) is formed at one end of the suction port (201), and the arc-shaped contact surface (4) is matched with the rotary rheometer main body (1).

4. A waste gas suction device for a rotational rheometer according to claim 3, characterized in that A supporting guide rod (306) is arranged on the adjusting knob (305), one end of the supporting guide rod (306) is provided with a support fixing clamp (307), and part of the support fixing clamp (307) is arranged on the connecting cylinder (206).

5. A waste gas suction device for a rotational rheometer according to claim 4, characterized in that The support fixing clamp (307) is threadedly connected with a first five-star handle (308) and a second five-star handle (309).

6. A waste gas suction device for a rotational rheometer according to claim 1, wherein The first connecting clamping plate (302) is connected with the second connecting clamping plate (303) through bolts, and one side of the first connecting clamping plate (302) is matched with the base (301).

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