Device for testing low-temperature fluidity of fireproof coating

Abstract

The invention relates to the technical field of coating testing, and particularly discloses a fireproof coating low-temperature fluidity testing device which comprises a base and further comprises a testing mechanism, the testing mechanism comprises an operation panel and a first motor which are located above the base, a rotor is installed at the output end of the first motor, and a protection frame is arranged below the operation panel; and the rotating mechanism comprises a second motor arranged below the operation panel, and an output shaft of the second motor is fixedly connected with a cylinder. Through driving of a second motor, under running fit of a connecting plate, a strip-shaped plate and a fixing plate, forward and reverse rotation of a circular plate can be achieved, the effect that a protection frame rotates in a reciprocating mode in a coating is achieved, shearing impact force can be generated on a sediment layer with the compacted bottom through sudden reverse rotation, particles are prevented from forming a stable deposition network structure, and the coating quality is improved. In addition, the mixing dead angles can be effectively reduced, so that all parts of the sample in the cup body can be fully exchanged.

Description

Technical Field

[0001] This invention belongs to the field of coating testing technology, specifically relating to a low-temperature flowability testing device for fire-retardant coatings. Background Technology

[0002] Fire-retardant coatings are special functional coatings applied to the surface of combustible substrates. They are usually non-combustible or flame-retardant, and their core function is to delay or prevent the spread of flames, providing fire and heat insulation protection to the protected substrate for up to several hours.

[0003] After production, fire-retardant coatings must undergo low-temperature testing. This test simulates the low-temperature environments the product may experience during storage, transportation, and its shelf life to assess its resistance to such harsh conditions. Its core purpose is to predict and verify whether the coating can maintain the stability of its chemical composition and the uniformity of its physical state after exposure to low temperatures, thereby ensuring reliable performance, compliance with design specifications, and ultimately, its fire-retardant effectiveness within its shelf life.

[0004] Existing testing methods require that fire-retardant coating samples be placed in a specified low-temperature environment for a period of time to allow them to fully experience the low-temperature conditions before being removed and allowed to stabilize at room temperature. Subsequently, a rotational viscometer is used to test the viscosity of the sample. Specifically, the container containing the coating to be tested is placed under the instrument, and the rotor is lowered to immerse it below the surface of the coating. The rotor is then rotated at a set speed to obtain the viscosity measurement. However, during the process of the coating recovering from a low temperature to room temperature, the suspended solid particles inside are prone to sedimentation due to temperature changes and viscosity fluctuations, resulting in an uneven sample. If the rotor is directly immersed in the liquid surface for measurement at this time, the rotor is likely to mainly contact the upper separated low-viscosity liquid phase or the lower deposited dense particles, thus causing the measured viscosity value to not truly reflect the overall rheological properties of the coating. Summary of the Invention

[0005] The purpose of this invention is to provide a low-temperature flowability testing device for fire-retardant coatings, so as to solve the problem that existing testing devices are not convenient for quickly mixing the coatings to be tested.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A low-temperature flowability testing device for fire-retardant coatings includes a base and further includes: The testing mechanism includes an operation panel located above the base and a first motor. A rotor is installed at the output end of the first motor, and a protective frame is provided below the operation panel. A rotating mechanism includes a second motor disposed below the operation panel. The output shaft of the second motor is fixedly connected to a cylinder. A connecting plate is fixedly connected to the arc surface of the cylinder. A strip plate is rotatably connected to the bottom surface of the connecting plate. A fixing plate is rotatably connected to the bottom surface of the strip plate. A circular plate is fixedly connected to the bottom surface of the fixing plate. The lifting mechanism includes a fixed ring located below the operation panel, and a connecting ring is threaded to the inner arc surface of the fixed ring. Both sides of the protective frame are fixedly connected to the inner arc surface of the connecting ring. The auxiliary mechanism includes two baffles, each baffle surface is fixedly connected to a rotating rod, and each rotating rod end is fixedly connected to a fixing block. The surface of the protective frame is provided with multiple L-shaped plates, and the surface of each L-shaped plate is fixedly connected to three rectangular columns.

[0007] Preferably: a column is fixedly connected to the end face of the base, a sliding sleeve is slidably connected to the arc surface of the column, a knob is threadedly connected to the side wall of the sliding sleeve, the back of the operation panel is fixedly connected to the sliding sleeve, two support columns are fixedly installed at the bottom of the operation panel, an installation ring is fixedly connected to one end of the two support columns that are close to each other, and the first motor is fixedly installed inside the installation ring.

[0008] Preferably, the bottom of the operation panel is fixedly connected to a fixed base, the second motor is fixedly mounted on the surface of the fixed base, and an annular track is fixedly connected to the side of the two support columns that are close to each other. The circular plate is rotatably connected inside the annular track.

[0009] Preferably, the bottom surface of the circular plate is fixedly connected to two rectangular frames, and the two ends of the protective frame are slidably inserted into the interior of the two rectangular frames respectively. The bottom surface of the annular track is fixedly connected to two support rods, and the fixing ring is fixedly installed on the bottom ends of the two support rods.

[0010] Preferably, both the inner arc surface of the fixing ring and the outer arc surface of the connecting ring are provided with threads.

[0011] Preferably, the protective frame has a U-shaped cross-section, rectangular holes are provided on both sides of the protective frame, the two baffles are located inside the two rectangular holes respectively, and the rotating rod is rotatably connected to the surface of the protective frame.

[0012] Preferably, a rectangular plate is fixedly connected to the bottom of each of the two rectangular frames, and there are four L-shaped plates. The four L-shaped plates are arranged in pairs, and the two pairs of L-shaped plates are fixedly connected to the bottom of the two rectangular plates respectively. Two torsion springs are sleeved on the arc surface of the rotating rod, and the two ends of the torsion springs are fixedly connected to the rotating rod and the protective frame respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. Driven by a second motor, the circular plate can rotate in both directions with the rotation of the connecting plate, strip plate, and fixing plate. This allows the protective frame to rotate back and forth inside the coating. The sudden reversal can generate shear impact force on the already compacted sediment layer at the bottom, preventing particles from forming a stable deposition network structure. It can also effectively reduce mixing dead zones, allowing the sample to be exchanged more fully in all parts of the cup, resulting in a much higher uniformity than unidirectional rotation.

[0014] 2. By making the protective frame telescopic, the protective frame can move up and down repeatedly while rotating in both directions, thanks to the threaded drive of the fixing ring and connecting ring, to exchange the material at the top and bottom, thereby further improving the mixing effect of the coating.

[0015] 3. This invention, by setting up a baffle, rectangular column, and fixing block, allows the angle of the baffle to be adjusted during the downward movement of the protective frame, thanks to the compression between the fixing block and the rectangular column. This allows the baffle to extend from the rectangular hole during paint mixing, and with the help of the torsion spring, the baffle can repeatedly swing back and forth towards the center of the container, further improving the paint mixing effect. Conversely, during the upward movement of the protective frame, the baffle can swing in the opposite direction, repeatedly swinging towards the container wall, again improving the paint mixing effect. In short, the rotation of the connecting plate, strip plate, and fixing plate enables the protective frame to move up and down simultaneously in both forward and reverse directions. Furthermore, the baffle extends during paint mixing to enhance the mixing effect, and the direction of the baffle's swing reverses with the up and down movement of the protective frame, further facilitating paint mixing. When testing the paint, the baffle retracts into the rectangular hole, providing protection for the rotor. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A front view structural diagram; Figure 3 For the present invention Figure 1 Partial structural diagram; Figure 4 For the present invention Figure 3 A partial structural diagram of the central circular track and the first motor; Figure 5 For the present invention Figure 3 A structural diagram of the rotating mechanism, the lifting mechanism, and the protective frame; Figure 6 This is a schematic diagram of the planar structure of the protective frame of the present invention; Figure 7 This is a schematic diagram showing the disassembled structure of the protective frame, rectangular plate, and baffle of the present invention; Figure 8 For the present invention Figure 7 A partial planar structural diagram of the L-shaped plate and the fixing block.

[0017] In the diagram: 1. Base; 101. Column; 102. Sliding sleeve; 103. Knob; 104. Operation panel; 105. First motor; 106. Rotor; 107. Protective frame; 108. Support column; 109. Mounting ring; 2. Rotating mechanism; 201. Fixed base; 202. Second motor; 203. Cylinder; 204. Connecting plate; 205. Strip plate; 206. Fixed plate; 207. Circular plate; 208. Circular track; 3. Lifting mechanism; 301. Rectangular frame; 302. Support rod; 303. Fixing ring; 304. Connecting ring; 4. Auxiliary mechanisms; 401. Rectangular plate; 402. L-shaped plate; 403. Rectangular column; 404. Rectangular hole; 405. Rotating rod; 406. Baffle; 407. Fixing block; 408. Torsion spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Reference Figures 1-8 As shown, the present invention provides a low-temperature flowability testing device for fire-retardant coatings, including a base 1, and further comprising: The testing mechanism includes an operation panel 104 located above the base 1 and a first motor 105. The output end of the first motor 105 is equipped with a rotor 106, and a protective frame 107 is provided below the operation panel 104.

[0020] In an optional embodiment: a column 101 is fixedly connected to the end face of the base 1, a sliding sleeve 102 is slidably connected to the arc surface of the column 101, a knob 103 is threadedly connected to the side wall of the sliding sleeve 102, the back of the operation panel 104 is fixedly connected to the sliding sleeve 102, two support columns 108 are fixedly installed at the bottom of the operation panel 104, an installation ring 109 is fixedly connected to one end of the two support columns 108 that is close to each other, and a first motor 105 is fixedly installed inside the installation ring 109.

[0021] It should be noted that the testing mechanism is existing technology. The rotor 106 is detachably connected to the output end of the first motor 105. The protective frame 107 has a U-shaped cross-section. The rotor 106 is located inside the protective frame 107. The protective frame 107 is used to protect the rotor 106. The position of the operation panel 104 is adjusted by sliding the sliding sleeve 102 on the arc surface of the column 101. It is fixed by the screw drive of the knob 103. The above are technologies well known to those skilled in the art, and will not be described in detail here.

[0022] In an optional embodiment: a rotating mechanism 2, the rotating mechanism 2 includes a second motor 202 disposed below the operation panel 104, the output shaft of the second motor 202 is fixedly connected to a cylinder 203, the arc surface of the cylinder 203 is fixedly connected to a connecting plate 204, the bottom surface of the connecting plate 204 is rotatably connected to a strip plate 205, the bottom surface of the strip plate 205 is rotatably connected to a fixing plate 206, and the bottom surface of the fixing plate 206 is fixedly connected to a circular plate 207; In this embodiment, with the rotational cooperation of the connecting plate 204, the strip plate 205 and the fixing plate 206, the circular plate 207 can be rotated in both directions, that is, the protective frame 107 can be rotated back and forth, so that the protective frame 107 can be rotated back and forth inside the coating. The sudden reversal can generate shear impact force on the already compacted sediment layer at the bottom, preventing the particles from forming a stable deposition network structure, and can effectively reduce the mixing dead angle, so that the sample can be more fully exchanged in all parts of the cup, and the uniformity is much higher than that of unidirectional rotation.

[0023] The bottom of the operation panel 104 is fixedly connected to a fixed base 201. The second motor 202 is fixedly installed on the surface of the fixed base 201. The two support columns 108 are fixedly connected to a ring track 208 on the side close to each other. The circular plate 207 is rotatably connected inside the ring track 208.

[0024] It should be noted that the annular track 208 serves to guide and limit the circular plate 207, meaning that the circular plate 207 will rotate inside the annular track 208 when it rotates.

[0025] In an optional embodiment: lifting mechanism 3, the lifting mechanism 3 includes a fixed ring 303 located below the operation panel 104, the inner arc surface of the fixed ring 303 is threadedly connected to a connecting ring 304, and both sides of the protective frame 107 are fixedly connected to the inner arc surface of the connecting ring 304. Two rectangular frames 301 are fixedly connected to the bottom surface of the circular plate 207. The two ends of the protective frame 107 are slidably inserted into the interior of the two rectangular frames 301. Two support rods 302 are fixedly connected to the bottom surface of the annular track 208. The fixing ring 303 is fixedly installed on the bottom end of the two support rods 302.

[0026] It should be noted that by sliding the protective frame 107 against the rectangular frame 301, the protective frame 107 is made telescopic. While the protective frame 107 rotates forward and backward, it can also move up and down synchronously by means of the thread drive of the fixing ring 303 and the connecting ring 304, so as to exchange the material at the top and bottom and further improve the mixing effect of the coating.

[0027] In an optional embodiment, both the inner arc surface of the retaining ring 303 and the outer arc surface of the connecting ring 304 are provided with threads.

[0028] It should be noted that the threads on the inner arc surface of the fixed ring 303 and the outer arc surface of the connecting ring 304 are mutually engaged, and multiple balls are provided between the threads to reduce the friction between the fixed ring 303 and the connecting ring 304, making it easier for the fixed ring 303 and the connecting ring 304 to rotate.

[0029] In an optional embodiment: auxiliary mechanism 4, the auxiliary mechanism 4 includes two baffles 406, the surfaces of the two baffles 406 are fixedly connected with rotating rods 405, the two ends of the rotating rods 405 are fixedly connected with fixing blocks 407, the surface of the protective frame 107 is provided with multiple L-shaped plates 402, and the surface of the L-shaped plates 402 is fixedly connected with three rectangular columns 403. The protective frame 107 has a U-shaped cross-section. Rectangular holes 404 are provided on both sides of the protective frame 107. Two baffles 406 are located inside the two rectangular holes 404 respectively. The rotating rod 405 is rotatably connected to the surface of the protective frame 107. Rectangular plates 401 are fixedly connected to the bottom of the two rectangular frames 301. There are four L-shaped plates 402. The four L-shaped plates 402 are arranged in pairs. The two pairs of L-shaped plates 402 are fixedly connected to the bottom of the two rectangular plates 401 respectively. Two torsion springs 408 are sleeved on the arc surface of the rotating rod 405. The two ends of the torsion springs 408 are fixedly connected to the rotating rod 405 and the protective frame 107 respectively.

[0030] It should be noted that the two ends of the rotating rod 405 rotate through the protective frame 107. The cross-sectional shape of the fixed block 407 is triangular, and the three rectangular columns 403 are equidistantly distributed. Through the compression of the fixed block 407 and the rectangular columns 403, when the protective frame 107 moves downward with the circular plate 207 in the forward direction, the swing direction of the baffle 406 is towards the center of the container. When the protective frame 107 moves upward with the circular plate 207 in the reverse direction, the swing direction of the baffle 406 is towards the container wall. In addition, the forward and reverse rotation and up and down movement of the protective frame 107 can effectively reduce the mixing dead angle and further improve the mixing effect of the coating. In summary, the protective frame 107 serves to protect the rotor 106, minimizing the possibility of the rotor 106 colliding with the container during installation or removal. Before testing, it can also stir and mix the paint in the container. Through the rotational cooperation of the connecting plate 204, the strip plate 205, and the fixing plate 206, the protective frame 107 can move up and down while rotating in both directions. When mixing the paint, the baffle 406 can extend to improve the mixing effect, and the direction of the baffle 406 swings in the opposite direction as the protective frame 107 moves up and down, which is more conducive to paint mixing. When testing the paint, the baffle 406 can retract into the rectangular hole 404, merging with the protective frame 107 into a whole, providing protection for the rotor 106 and minimizing the possibility of the rotor 106 colliding with the container during installation or removal.

[0031] The working principle of this invention is as follows: During use, the operator places the container containing the paint in a low-temperature environment for a period of time. Then, the container is removed to allow the paint inside to return to room temperature. The container is then placed under the control panel 104. To prevent paint sedimentation that could affect the test, the operator first turns knob 103 to release the stabilization of the sliding sleeve 102, allowing it to slide along the arc surface of the column 101. This adjusts the position of the protective frame 107, ensuring it extends into the paint at a suitable position. Then, the operator turns knob 103 in the opposite direction to readjust the position. The sliding sleeve 102 is fixed in position. Then, the second motor 202 is started by the external power controller. The output shaft of the second motor 202 drives the cylinder 203 to rotate. The cylinder 203 drives the connecting plate 204 to rotate. Since the connecting plate 204 is rotatably connected to the strip plate 205 and the strip plate 205 is rotatably connected to the fixed plate 206, the circular plate 207 will rotate forward and backward in the inner wall of the annular track 208 under the cooperation of the connecting plate 204, the strip plate 205 and the fixed plate 206. That is, the circular plate 207 will rotate back and forth. At this time, the protective frame 107 will rotate back and forth in the container to mix the coating. As the circular plate 207 reciprocates, it drives the connecting ring 304 to rotate. The connecting ring 304 and the fixed ring 303 are threaded together. As the connecting ring 304 rotates, it moves downwards driven by the thread. Since the circular plate 207 rotates in both directions, it moves up and down, further improving the mixing effect of the coating. When the protective frame 107 moves downwards with the circular plate 207 in the forward direction, it drives the fixed block 407 downwards. The fixed block 407 presses against the first rectangular post 403, hindering its movement. At this time, the fixed block 407 drives the rotating rod 405 to rotate, and the torsion spring 408 is in a torsional state. The baffle 406 then rotates out of the rectangular hole 404. As the fixed block 407 continues to move downwards, when it is between the two rectangular posts 403, it is no longer obstructed, and the torsion spring 408 rebounds, causing the baffle 406 to... The baffle 406 then re-enters the rectangular hole 404. As the fixing block 407 continues to move downward, the baffle 406 repeats the above actions until the protective frame 107 moves upward with the reverse rotation of the circular plate 207. At this point, the top of the fixing block 407 will first press against the bottom rectangular post 403. The fixing block 407 is obstructed, causing the rotating rod 405 to rotate in the opposite direction. The torsion spring 408 twists, causing the baffle 406 to swing towards the container wall. When the fixing block 407 no longer contacts the rectangular post 403, the torsion spring 408 rebounds, and the baffle 406 re-enters the rectangular hole 404. That is, as the protective frame 107 moves up and down continuously, the swing direction of the baffle 406 will also change continuously: when the protective frame 107 moves downward, the swing direction of the baffle 406 is towards the center of the container; when the protective frame 107 moves upward, the swing direction of the baffle 406 is towards the container wall, further improving the mixing effect of the coating. After the paint is mixed, the second motor 202 is turned off by the external power controller. The protective frame 107 is then removed from the container by adjusting the knob 103. The rotor 106 is then installed on the output shaft of the first motor 105. After installation, the rotor 106 is inserted into the container at a suitable position by adjusting the knob 103. The first motor 105 is started by controlling the operation panel 104 to drive the rotor 106 to rotate and contact the paint in the container, thereby measuring the viscosity value of the paint in the container.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A low-temperature flowability testing device for fire-retardant coatings, comprising a base (1), characterized in that, Also includes: The testing mechanism includes an operation panel (104) located above the base (1) and a first motor (105). The output end of the first motor (105) is equipped with a rotor (106), and a protective frame (107) is provided below the operation panel (104). The rotating mechanism (2) includes a second motor (202) disposed below the operation panel (104). The output shaft of the second motor (202) is fixedly connected to a cylinder (203). The arc surface of the cylinder (203) is fixedly connected to a connecting plate (204). The bottom surface of the connecting plate (204) is rotatably connected to a strip plate (205). The bottom surface of the strip plate (205) is rotatably connected to a fixing plate (206). The bottom surface of the fixing plate (206) is fixedly connected to a circular plate (207). The lifting mechanism (3) includes a fixed ring (303) located below the operation panel (104), and a connecting ring (304) is threadedly connected to the inner arc surface of the fixed ring (303). Both sides of the protective frame (107) are fixedly connected to the inner arc surface of the connecting ring (304). The auxiliary mechanism (4) includes two baffles (406), and a rotating rod (405) is fixedly connected to the surface of each of the two baffles (406). A fixing block (407) is fixedly connected to both ends of the rotating rod (405). The surface of the protective frame (107) is provided with multiple L-shaped plates (402), and three rectangular columns (403) are fixedly connected to the surface of the L-shaped plates (402).

2. The low-temperature flowability testing device for fire-retardant coatings according to claim 1, characterized in that: A column (101) is fixedly connected to the end face of the base (1), a sliding sleeve (102) is slidably connected to the arc surface of the column (101), a knob (103) is threadedly connected to the side wall of the sliding sleeve (102), the back of the operation panel (104) is fixedly connected to the sliding sleeve (102), two support columns (108) are fixedly installed at the bottom of the operation panel (104), and an installation ring (109) is fixedly connected to one end of the two support columns (108) that are close to each other. The first motor (105) is fixedly installed inside the installation ring (109).

3. The low-temperature flowability testing device for fire-retardant coatings according to claim 2, characterized in that: The bottom of the operation panel (104) is fixedly connected to a fixed base (201), the second motor (202) is fixedly installed on the surface of the fixed base (201), and the two support columns (108) are fixedly connected to a ring track (208) on the side close to each other. The circular plate (207) is rotatably connected inside the ring track (208).

4. The low-temperature flowability testing device for fire-retardant coatings according to claim 3, characterized in that: The bottom surface of the circular plate (207) is fixedly connected to two rectangular frames (301), and the two ends of the protective frame (107) are slidably inserted into the interior of the two rectangular frames (301). The bottom surface of the annular track (208) is fixedly connected to two support rods (302), and the fixing ring (303) is fixedly installed on the bottom end of the two support rods (302).

5. The low-temperature flowability testing device for fire-retardant coatings according to claim 1, characterized in that: The inner arc surface of the fixing ring (303) and the outer arc surface of the connecting ring (304) are both provided with threads.

6. The low-temperature flowability testing device for fire-retardant coatings according to claim 1, characterized in that: The protective frame (107) has a U-shaped cross section. Rectangular holes (404) are provided on both sides of the protective frame (107). Two baffles (406) are located inside the two rectangular holes (404) respectively. The rotating rod (405) is rotatably connected to the surface of the protective frame (107).

7. The low-temperature flowability testing device for fire-retardant coatings according to claim 4, characterized in that: The bottom ends of the two rectangular frames (301) are fixedly connected to rectangular plates (401). There are four L-shaped plates (402). The four L-shaped plates (402) are arranged in pairs. The two pairs of L-shaped plates (402) are fixedly connected to the bottom of the two rectangular plates (401). The arc surface of the rotating rod (405) is fitted with two torsion springs (408). The two ends of the torsion springs (408) are fixedly connected to the rotating rod (405) and the protective frame (107) respectively.

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