High-precision material injector for preventing asphalt from sticking to wall

Abstract

The utility model discloses a high-precision injection device of preventing pitch from sticking wall, including counterweight base, be provided with vertical rod on counterweight base, be provided with first rotating seat, second rotating seat, third rotating seat on vertical rod, be provided with cross arm on three rotating seats, be provided with installation base piece on upper end cross arm, be provided with baffle on middle cross arm, be provided with test tube clamp on lower end cross arm, be provided with injection device on installation base piece. The utility model discloses through setting up second rotating seat in the middle part of vertical rod, and setting up cross arm and baffle on second rotating seat, when injecting pitch into test tube, rotates second rotating seat and will baffle move to one side, and after filling operation is completed, lifts injection device upwards to make injection device separate from test tube, then rotates baffle to the below of injection device, baffle shields in the below of injection device at this moment, not only plays the role of spacing support to injection device, but also can prevent pitch in injection device from dripping, brings great convenience to test operation.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt testing equipment, specifically to a high-precision injector that prevents asphalt from sticking to the wall. Background Technology

[0002] The dynamic viscosity test of asphalt is mainly used to evaluate the fluidity, physical properties, and aging performance of asphalt under specific conditions, providing a scientific basis for the quality control, formulation optimization, and construction of asphalt materials. The test requires heating the asphalt to a high temperature to maintain its fluidity. Before the test, the heated asphalt is added to a test tube specifically designed for dynamic viscosity testing. To prevent asphalt from sticking to the sidewalls of the test tube and affecting the test results, the test tube is usually fixed to an injection support, with a funnel-shaped injector extended into the interior. Asphalt is then injected into the injector. After injection, the injector is lifted, removing its lower end from the test tube. However, due to the viscosity of asphalt, a small amount of asphalt may drip from the injector after lifting it. This dripping asphalt not only easily contaminates the test bench but also easily gets on the hands of staff handling the test tubes, causing significant inconvenience to the testing work. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-precision injector that prevents asphalt from sticking to the wall, thereby solving the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: a high-precision injector for preventing asphalt from sticking to the wall, comprising a counterweight base, a vertical rod provided on one side of the counterweight base, a first rotating seat provided at the top of the vertical rod, a second rotating seat provided in the middle of the vertical rod, and a third rotating seat provided at the bottom of the vertical rod. Each of the three rotating seats is provided with a horizontal arm, a mounting base provided at the end of the upper horizontal arm, a baffle plate provided at the end of the middle horizontal arm, and a test tube clamp provided at the end of the lower horizontal arm. An adjustable injector is provided on the mounting base, and the discharge port at the bottom of the injector rests above the baffle plate.

[0005] Furthermore, the injector includes an injection conduit and an injection hopper disposed at the top of the injection conduit. The mounting base has a vertically provided mounting hole to facilitate the up-and-down movement of the injection conduit. The injection conduit passes through the mounting hole and extends downward. The lower end of the injection hopper rests against the top of the mounting base. A vertically movable plug is provided inside the injection hopper.

[0006] Furthermore, the mounting base has a mounting cavity along the front-to-back direction, one side of the mounting cavity is connected to the mounting hole, a rotatable transmission gear is provided in the mounting cavity, and teeth are provided on the side wall of the injection conduit along the vertical direction. The side of the injection conduit with the teeth is arranged facing the side of the mounting cavity, the teeth and the transmission gear mesh with each other, and the injector moves up and down along the mounting base under the cooperation of the transmission gear and the teeth.

[0007] Furthermore, the transmission gear is provided with mounting shafts at both ends, and bearing seats are provided on the front and rear sides of the mounting base at positions corresponding to the mounting cavity, and the mounting shafts are respectively mounted on the bearing seats on both sides.

[0008] Furthermore, the mounting shaft extends outward from the bearing housing on one side, and an adjusting handwheel is provided at one end of the extended mounting shaft.

[0009] Furthermore, the plugging device includes a vertically arranged cylindrical seat, which is mounted on a mounting platform at the top center of the injection hopper. An adjusting rod is vertically arranged inside the cylindrical seat, and the adjusting rod passes through the top of the cylindrical seat and the mounting platform in a vertical direction. A plug for sealing the injection conduit is provided at one end of the adjusting rod that passes through the mounting platform, and an operating head is provided at the top of the adjusting rod.

[0010] Furthermore, the portion of the adjusting rod located inside the cylinder seat is fitted with a telescopic spring, and the portion of the adjusting rod located inside the cylinder seat is also provided with a limiting edge, with the telescopic spring installed between the limiting edge and the top wall of the cylinder seat.

[0011] Furthermore, the upright has a limiting protrusion on the side wall corresponding to the top of the second rotating seat, and the upper edge of the second rotating seat has an arc-shaped notch at the position corresponding to the limiting protrusion, with the limiting protrusion located in the notch.

[0012] Furthermore, the limiting protrusion is an iron block, and positioning magnets are provided on both sides of the notch.

[0013] Furthermore, a positioning screw is screwed to one side of both the first rotating seat and the third rotating seat. An operating button is provided at the end of the positioning screw located outside each rotating seat, and the end of the positioning screw located inside each rotating seat abuts against the side wall of the upright.

[0014] The above-mentioned technical solution of this utility model has the following beneficial effects: By setting a second rotating seat in the middle of the upright, and setting a cross arm and a baffle plate on the second rotating seat, when injecting asphalt into the test tube, the second rotating seat is rotated to move the baffle plate to one side. After the injection operation is completed, the injector is lifted upward, thereby separating the injector from the test tube. Then the baffle plate is rotated to the bottom of the injector. At this time, the baffle plate blocks the bottom of the injector, which not only plays a limiting and supporting role for the injector, but also prevents the asphalt in the injector from dripping, which brings great convenience to the test operation. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0018] Figure 3 for Figure 1 Enlarged view at point B in the middle;

[0019] Figure 4 This is a top cross-sectional view of the mounting base in an embodiment of the present invention;

[0020] Figure 5 This is a top view schematic diagram of the installation of the baffle plate in an embodiment of this utility model. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0023] like Figure 1-5As shown, this utility model embodiment provides a high-precision injector to prevent asphalt from sticking to the wall, including a counterweight base 1, a vertical rod 2 on one side of the counterweight base 1, a first rotating seat 3 on the top of the vertical rod 2, a second rotating seat 4 in the middle of the vertical rod 2, and a third rotating seat 5 at the bottom of the vertical rod 2. Each of the three rotating seats is provided with a horizontal arm 6. The end of the upper horizontal arm 6 is provided with a mounting base block 7, the end of the middle horizontal arm 6 is provided with a baffle plate 8, and the end of the lower horizontal arm 6 is provided with a test tube clamp 9. An adjustable injector is provided on the mounting base block 7, and the discharge port at the bottom of the injector rests on the baffle plate 8.

[0024] The injector includes an injection conduit 10 and an injection hopper 11 disposed on the top of the injection conduit 10. The mounting base 7 is vertically provided with a mounting hole to facilitate the up and down movement of the injection conduit 10. The injection conduit 10 passes through the mounting hole and extends downward. The lower end of the injection hopper 11 rests against the top of the mounting base 7. A blocker that can move up and down is provided inside the injection hopper 11.

[0025] The mounting base 7 has a mounting cavity 12 along the front-to-back direction. One side of the mounting cavity 12 is connected to the mounting hole. A rotatable transmission gear 13 is installed inside the mounting cavity 12. The side wall of the injection conduit 10 has teeth 14 along the vertical direction. The side of the injection conduit 10 with teeth 14 is arranged facing the mounting cavity 12. The teeth 14 and the transmission gear 13 mesh with each other. The injector moves up and down along the mounting base 7 under the cooperation of the transmission gear 13 and the teeth 14.

[0026] The transmission gear 13 has mounting shafts 15 at both ends, and the mounting base 7 has bearing seats 16 on the front and rear sides at the corresponding mounting cavities 12. The mounting shafts 15 are respectively mounted on the bearing seats 16 on both sides.

[0027] One side of the mounting shaft 15 extends outward to the outside of the bearing housing 16, and an adjusting handwheel 17 is provided at one end of the extended mounting shaft 15.

[0028] The operator operates the adjustment handwheel 17 to drive the mounting shaft 15 to rotate on the bearing seat 16, thereby causing the transmission gear 13 located in the mounting cavity 12 to rotate. Since the transmission gear 13 meshes with the teeth 14 on the injection guide tube 10, the injection guide tube 10 can be driven to move up and down along the mounting base block 7, thus realizing the position adjustment of the entire injector.

[0029] The blockage device includes a vertically arranged cylindrical base 18, which is mounted on a mounting platform 19 at the top center of the injection hopper 11. An adjusting rod 20 is vertically arranged inside the cylindrical base 18, and the adjusting rod 20 passes through the top of the cylindrical base 18 and the mounting platform 19 in a vertical direction. A plug 21 for sealing the injection conduit 10 is provided at one end of the adjusting rod 20 that passes through the mounting platform 19. An operating head is provided at the top of the adjusting rod 20.

[0030] The portion of the adjusting rod 20 located inside the cylinder seat 18 is fitted with a telescopic spring 22, and the portion of the adjusting rod 20 located inside the cylinder seat 18 is also provided with a limiting edge 23. The telescopic spring 22 is installed between the limiting edge 23 and the top wall of the cylinder seat 18.

[0031] The operator can lift the adjusting rod 20 by grasping the operating head. This will separate the plug 21 at the bottom of the adjusting rod 20 from the upper end of the injection conduit 10. When the adjusting rod 20 is lifted, its limiting edge 23 can compress the telescopic spring 22, allowing the asphalt in the injection hopper 11 to flow down along the injection conduit 10. When the operator releases the rod, the adjusting rod 20 will move down under the restoring force of the telescopic spring 22, causing the plug 21 to re-block the end of the injection conduit 10.

[0032] The upright 2 is provided with a limiting protrusion 24 on the side wall corresponding to the top of the second rotating seat 4. The upper edge of the second rotating seat 4 is provided with an arc-shaped notch 4a at the position corresponding to the limiting protrusion 24. The limiting protrusion 24 is located in the notch 4a. The notch 4a cooperates with the limiting protrusion 24 to limit the rotation range of the second rotating seat 4, thereby preventing the baffle plate 8 from moving excessively.

[0033] The limiting protrusion 24 is an iron block, and positioning magnets 25 are provided on both sides of the notch groove 4a. The positioning magnets 25 cooperate with the iron block to fix the position of the cross arm 6 and its end baffle 8.

[0034] A positioning screw 26 is screwed to one side of both the first rotating seat 3 and the third rotating seat 5. An operating button 27 is provided at the end of the positioning screw 26 located outside each rotating seat, and the end of the positioning screw 26 located inside each rotating seat abuts against the side wall of the upright 2.

[0035] The working principle of this utility model is as follows: First, select the positions of the first rotating seat 3 and the third rotating seat 5, and control the test tube clamp 9 on the third rotating seat 5 to correspond with the position of the injector. Then, tighten the positioning screws 26 on the two rotating seats to fix the positions of the first rotating seat 3 and the third rotating seat 5. Then, clamp the test tube on the test tube clamp 9, with the opening at the top of the test tube corresponding to the position of the injector. The lower outlet of the injector's lower end of the injector's injector tube 10 extends to the upper part of the test tube. Then, add the asphalt to be tested into the injector hopper 11. Then, pull the adjusting rod 20 upward to separate the plug 21 at the lower end of the adjusting rod 20 from the opening at the top of the injector tube 10. At this time, the asphalt will flow into the interior of the test tube 28 along the injector tube 10. The injector tube 10 allows the asphalt to flow directly to the bottom of the test tube 28 without leaving any residue on the wall of the test tube 28. After the injection is completed, release the adjusting rod 20, driven by the extension spring 22. When the plug 21 is closed, it will block the opening at the top of the injection conduit 10. At this time, the asphalt in the injection hopper 11 will no longer flow down. Since the asphalt is tested at high temperature, in order to prevent the staff from touching the injection hopper 11 and getting burned, the staff can turn the adjusting handwheel 17. Then, with the cooperation of the transmission gear 13 and the teeth 14 on the injection conduit 10, the entire injector will be lifted up, so that the lower end of the injection conduit 10 will be moved out of the test tube 28. Then, the second rotating seat 4 will be turned to move the baffle plate 8 on the second rotating seat 4 to the lower end of the injection conduit 10. At this time, under the limit of the baffle plate 8, the entire injector will be placed on the baffle plate 8. The baffle plate 8 keeps the injector and the test tube 28 separated. The baffle plate 8 can also prevent the residual asphalt in the injection conduit 10 from leaking out. Then, the test tube 28 filled with asphalt will be removed from the test tube clamp 9 and taken to the dynamic viscosity test equipment for testing.

[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A high-precision injector for preventing asphalt from sticking to the wall, characterized in that: The device includes a counterweight base, a vertical pole on one side of the counterweight base, a first rotating seat at the top of the vertical pole, a second rotating seat in the middle of the vertical pole, and a third rotating seat at the bottom of the vertical pole. Each of the three rotating seats has a horizontal arm. The end of the upper horizontal arm has a mounting block, the end of the middle horizontal arm has a baffle plate, and the end of the lower horizontal arm has a test tube clamp. An adjustable feeder is mounted on the mounting block, and the discharge port at the bottom of the feeder rests above the baffle plate.

2. The high-precision injector for preventing asphalt from sticking to the wall according to claim 1, characterized in that: The injector includes an injection conduit and an injection hopper disposed at the top of the injection conduit. The mounting base has a vertically provided mounting hole to facilitate the up-and-down movement of the injection conduit. The injection conduit passes through the mounting hole and extends downward. The lower end of the injection hopper rests against the top of the mounting base. A vertically movable plug is provided inside the injection hopper.

3. The high-precision injector for preventing asphalt from sticking to the wall according to claim 2, characterized in that: The mounting base has a mounting cavity along the front-to-back direction. One side of the mounting cavity is connected to the mounting hole. A rotatable transmission gear is installed inside the mounting cavity. Teeth are provided on the side wall of the injection conduit along the vertical direction. The side of the injection conduit with the teeth is arranged facing the side of the mounting cavity. The teeth and the transmission gear mesh with each other. The injector moves up and down along the mounting base under the cooperation of the transmission gear and the teeth.

4. The high-precision injector for preventing asphalt from sticking to the wall according to claim 3, characterized in that: The transmission gear is provided with mounting shafts at both ends, and bearing seats are provided on the front and rear sides of the mounting base at positions corresponding to the mounting cavity. The mounting shafts are respectively mounted on the bearing seats on both sides.

5. A high-precision injector for preventing asphalt from sticking to the wall according to claim 4, characterized in that: The mounting shaft extends outward from the bearing housing on one side, and an adjusting handwheel is provided at one end of the extended mounting shaft.

6. A high-precision injector for preventing asphalt from sticking to the wall according to claim 2, characterized in that: The plugging device includes a vertically arranged cylindrical base, which is mounted on a mounting platform at the top center of the injection hopper. An adjusting rod is vertically arranged inside the cylindrical base, and the adjusting rod passes through the top of the cylindrical base and the mounting platform in a vertical direction. A plug for sealing the injection conduit is provided at one end of the adjusting rod that passes through the mounting platform, and an operating head is provided at the top of the adjusting rod.

7. A high-precision injector for preventing asphalt from sticking to the wall according to claim 6, characterized in that: The portion of the adjusting rod located inside the cylinder seat is fitted with a telescopic spring, and the portion of the adjusting rod located inside the cylinder seat is also provided with a limiting edge. The telescopic spring is installed between the limiting edge and the top wall of the cylinder seat.

8. A high-precision injector for preventing asphalt from sticking to the wall according to claim 1, characterized in that: The upright has a limiting protrusion on the side wall corresponding to the top of the second rotating seat, and the upper edge of the second rotating seat has an arc-shaped notch at the position corresponding to the limiting protrusion, with the limiting protrusion located in the notch.

9. A high-precision injector for preventing asphalt from sticking to the wall according to claim 8, characterized in that: The limiting protrusion is an iron block, and positioning magnets are provided on both sides of the notch.

10. A high-precision injector for preventing asphalt from sticking to the wall according to claim 1, characterized in that: A positioning screw is screwed to one side of both the first rotating seat and the third rotating seat. An operating button is provided at the end of the positioning screw located outside each rotating seat, and the end of the positioning screw located inside each rotating seat abuts against the side wall of the upright.

Images