Viscosity testing device for liquid admixture of cement mortar

Abstract

The utility model discloses a viscosity testing device for a liquid admixture of cement mortar. The viscosity testing device comprises a base, a first supporting column, a second supporting column, a transposition plate, a lifting device, a viscometer, a third supporting column, a sliding rail and a cleaning device. The first supporting column and the second supporting column are both fixed to the base. The position changing plate is rotationally connected with the upper end of the second supporting column. And the viscometer is connected to a lifting device fixed on the transposition plate. The third supporting column is vertically arranged behind the first supporting column, the two ends of the horizontal sliding rail are connected with the upper end of the first supporting column and the upper end of the third supporting column respectively, and the sliding rail is of an arc-shaped structure coinciding with the rotating track line of the transposition plate. And the other end of the transposition plate is in sliding connection with the sliding rail. And the cleaning device is positioned on the base between the second support column and the third support column, and is positioned below a testing head of the viscometer. According to the viscometer cleaning device, the testing head of the viscometer can be conveniently and effectively cleaned, and the influence on a subsequent additive testing result is avoided.

Description

Technical Field

[0001] The utility model relates to the field of viscosity testing equipment, and particularly relates to a viscosity testing device for liquid admixtures of cement mortar. Background Art

[0002] Cement mortar is a building material widely used in the fields of construction engineering, bridges, tunnels, water conservancy and hydropower, etc. In order to improve the performance of cement mortar, adding liquid admixtures is a commonly used method. For example, water reducing agents can improve the fluidity of cement mortar, which is beneficial to mechanized construction and improves the project quality. Air entraining agents can increase the air content of cement mortar and improve its frost resistance, impermeability and crack resistance. Defoaming agents can reduce the large air bubbles generated during the mixing and construction of cement mortar, optimize the pore structure, and improve the surface flatness, homogeneity, mechanical properties, etc. after hardening. Since the addition of admixtures will affect the viscosity of cement mortar, and thus affect its workability. Therefore, testing the viscosity of admixtures is a necessary step. At present, viscometers are generally used to test the viscosity of admixtures, but such devices have the problem that it is not easy to clean the test head of the viscometer after testing, resulting in the binder adhering to the test head being likely to affect the accuracy of the subsequent test results of the admixtures. Content of the Utility Model

[0003] The utility model provides a viscosity testing device for liquid admixtures of cement mortar, which can conveniently and effectively clean the test head of the viscometer and avoid affecting the subsequent test results of the admixtures. Specifically, the technical solution of the utility model is as follows.

[0004] A viscosity testing device for liquid admixtures of cement mortar includes: a base, a first pillar, a second pillar, a transposition plate, a lifting device, a viscometer, a third pillar, a slide rail and a cleaning device. Among them: the first pillar and the second pillar are both vertically arranged and are respectively fixed on the left and right sides of the base. One end of the horizontally arranged transposition plate is rotatably connected to the upper end of the second pillar. The lifting device is fixed on the transposition plate, and the viscometer is connected to the lifting device. The third pillar is vertically fixed on the base and is located behind the first pillar. The two ends of the horizontally arranged slide rail are respectively connected to the upper ends of the first pillar and the third pillar, and the slide rail is an arc-shaped structure that coincides with the trajectory line of the transposition plate rotating around the second pillar. The other end of the transposition plate is slidably connected to the slide rail so as to slide along the slide rail. The cleaning device is located on the base between the second pillar and the third pillar, and is located below the test head of the viscometer to facilitate cleaning of the test head.

[0005] Furthermore, an arc-shaped through groove distributed along the trajectory line is provided on the slide rail, and a guiding head is fixed at the second end of the transposition plate, which is located in the arc-shaped through groove and can slide along the arc-shaped through groove.

[0006] Further, the guiding head is a bolt, the upper end of which passes through the arc-shaped through groove and is threadedly connected to the commutation plate, and the diameter of the bolt head of the bolt is greater than the width of the arc-shaped through groove so as to temporarily lock and fix the commutation plate.

[0007] Further, a limiting member is provided on the side wall of the upper end of the second support column, and the end of the commutation plate is rotatably sleeved on the upper end of the second support column and supported on the limiting member.

[0008] Further, a nut is threadedly connected to the upper end of the second support column, and the nut is located above the commutation plate.

[0009] Further, a test bench is further included, which is located on the base between the first support column and the second support column and below the test head.

[0010] Further, the upper surface of the test bench has a groove for placing a test container loaded with liquid admixture.

[0011] Further, the test bench has a heating unit to facilitate changing the temperature of the liquid admixture to be tested.

[0012] Further, a temperature sensor is further included, which is connected to a temperature controller, and the temperature controller is connected to the heating unit of the test bench to control the heating temperature.

[0013] Further, the cleaning device includes any one of an ultrasonic cleaner, a magnetic stirring cleaning device, etc.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects: in the viscosity testing device of the utility model, the viscometer is arranged on a rotatable commutation plate, and a cleaning device is arranged between the second support column and the third support column. Thus, after the viscosity of the liquid admixture on the test bench is tested, the commutation plate can be driven to rotate backward to the position of the third support column. At this time, the test head of the viscometer is lowered into the cleaning device by using the lifting device for cleaning. After completion, it returns to the test bench to perform the next test. The above testing device of the utility model can conveniently and effectively clean the test head of the viscometer and avoid affecting the test results of subsequent admixtures. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments will be briefly introduced below.

[0016] Figure 1 It is a structural schematic diagram of a viscosity testing device for a liquid admixture of cement mortar in the following embodiments;

[0017] Figure 2 Top view of the viscosity testing device for the liquid admixture of cement mortar in the following embodiments;

[0018] Figure 3 Structural schematic diagram of the transposition plate in the following embodiments;

[0019] Figure 4 Structural schematic diagram of the test bench in the following embodiments.

[0020] The markings in the above-mentioned drawings respectively represent: 1 - base, 2 - first pillar, 3 - second pillar, 4 - transposition plate, 5 - lifting device, 6 - viscometer, 7 - third pillar, 8 - slide rail, 9 - cleaning device, 10 - test head, 11 - test bench, 12 - groove, 13 - test container, 301 - limiting member, 302 - nut, 401 - guiding head, 801 - arc-shaped through groove. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. For the convenience of description, if terms such as "upper", "lower", "left", and "right" appear in the present utility model, they only represent the same directions as the upper, lower, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to needs to have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The present utility model will be further described below in combination with the accompanying drawings of the specification and the specific implementation manners.

[0022] Refer to Figure 1 and Figure 2 An example of a viscosity testing device for the liquid admixture of cement mortar includes: a base 1, a first pillar 2, a second pillar 3, a transposition plate 4, a lifting device 5, a viscometer 6, a third pillar 7, a slide rail 8, and a cleaning device 9. Specifically: the base 1 is horizontally arranged, the first pillar 2 and the second pillar 3 are both vertically arranged and are respectively fixed on the left side and the right side of the base 1. The transposition plate 4 is horizontally arranged, and its right end is rotatably connected to the upper end of the second pillar 3: an annular limiting member 301 is sleeved on the side wall of the upper end of the second pillar 3 and the two are fixedly connected. The right end of the transposition plate 4 has a connection hole, and it is rotatably sleeved on the upper end of the second pillar 3 and supported on the limiting member 301. At the same time, a nut 302 is screwed on the upper end of the second pillar 3, and this nut 302 is located above the transposition plate 4, so that the right end of the transposition plate 4 is rotatably connected and limited at the upper end of the second pillar 3, so that the transposition plate 4 can rotate around the second pillar 3 in the horizontal plane.

[0023] The lifting device 5 is vertically fixed on the transposition plate 4, and the viscometer 6 is connected to the lifting device 5. The lifting device 5 can adopt existing devices such as electric cylinders. Its main function is to lift the viscometer 6 so that the test head 10 of the viscometer 6 can enter the liquid admixture to be tested for viscosity testing. After completion, the test head 10 rises and exits from the admixture. The viscometer 6 can adopt commercially available products.

[0024] The third pillar 7 is vertically fixed on the base 1 and is located at the rear right side of the first pillar 2. The slide rail 8 is horizontally arranged, and its front and rear ends are respectively fixedly connected to the upper ends of the first pillar 2 and the third pillar 7. Refer to Figure 2 , the slide rail 8 is an arc-shaped structure that coincides with the trajectory line of the transposition plate 4 rotating around the second pillar 3. The left end of the transposition plate 4 is supported on the upper surface of the slide rail 8, and when the transposition plate 4 rotates around the second pillar 3 in the horizontal plane, the left end of the transposition plate 4 can reciprocally slide along the upper surface of the slide rail 8.

[0025] The cleaning device 9 is fixed on the base 1 between the second pillar 3 and the third pillar 7 and is located below the test head 10 of the viscometer 6. During use, first add the liquid admixture to be tested into a container, then place it on the base 1 between the first pillar 2 and the second pillar 3 and be located below the test head 10. Then start the lifting device 5 to lower the viscometer 6 by a set height so that the lower end of the test head 10 enters the liquid admixture for viscosity testing. After the test is completed, restart the lifting device 5 to raise the viscometer 6, and the lower end of the test head 10 exits from the liquid admixture. At this time, the staff can manually turn the transposition plate 4 backward until it is restricted by the upper end of the third pillar 7 (as Figure 2 shown by the dotted line). At this time, the test head 10 is located above the cleaning device 9. Start the lifting device 5 to lower the viscometer 6 by the set height again so that the lower end of the test head 10 enters the cleaning device 9. After starting the cleaning device 9, the lower end of the test head 10 can be cleaned by using the washing liquid therein (such as clear water, deionized water, distilled water, ethanol, etc.). The cleaning device 9 includes an ultrasonic cleaner, a magnetic stirring cleaning device, etc.

[0026] After the cleaning is completed, start the lifting device 5 to raise the viscometer 6, and the lower end of the test head 10 exits from the cleaning device 9. Then the staff manually turns the transposition plate 4 forward until it is restricted by the upper end of the first support column 2, and it can be reset to the initial position to facilitate the next test. After resetting, the staff can also dry the cleaning liquid at the lower end of the test head 10 or wait for it to dry naturally. In this embodiment, the transposition plate 4 is used to realize the switching of the test head 10 of the viscometer 6 between the test and cleaning procedures, so that the test head 10 can be conveniently cleaned after the test is completed, avoiding affecting the test results of subsequent admixtures.

[0027] In another embodiment, referring to Figure 2 , an arc-shaped through groove 801 is provided on the slide rail 8 of the viscosity testing device of the above embodiment along the trace line. Referring to Figure 3 , a guiding head 401 is fixed to the left end of the transposition plate 4, which is located in the arc-shaped through groove 801 and can slide along the arc-shaped through groove 801, thereby guiding the transposition plate 4 during sliding.

[0028] In a better embodiment, the above guiding head 401 is a bolt, the upper end of which passes through the arc-shaped through groove 801 and is threadedly connected to the screw hole on the lower surface of the left end of the transposition plate 4, and the diameter of the bolt head of the bolt is greater than the width of the arc-shaped through groove 801. Thus, the transposition plate 4 and the slide rail 8 can be temporarily locked and fixed together by tightening the bolt. For example, when in the state of cleaning the test head 10, the transposition plate 4 and the slide rail 8 can be temporarily locked and fixed together, which helps to prevent the rotation of the cleaning liquid in the cleaning device 9 from causing the transposition plate 4 to shake and make abnormal noises.

[0029] In another embodiment, referring to Figure 1 , Figure 2 and Figure 3 , the viscosity testing device of the above embodiment further includes a test bench 11, which is fixed on the base 1 between the first support column 2 and the second support column 3 and is located below the test head 10. The test bench 11 is used to place a test container 13 loaded with liquid admixture. In a better embodiment, the upper surface of the test bench 11 has a groove 12 to prevent the test container 13 from falling off the test bench 11 due to accidental factors, spilling the admixture to the outside and polluting the testing device.

[0030] In another embodiment, the test bench 11 of the above embodiment further has a heating unit to facilitate changing the temperature of the liquid admixture to be tested, so as to test the viscosity of the same admixture at different temperatures, or to ensure that different admixtures have the same test temperature during testing, which is convenient for comparison. Further, in order to monitor and control the temperature, a temperature sensor is further included and is arranged on the side wall of the groove 12, which is connected to the temperature controller of the test bench 11, and the temperature controller is connected to the heating unit. The temperature sensor transmits the monitored temperature to the temperature controller, and the temperature controller controls the heating power, time, start and stop, etc. of the heating unit to control the heating temperature. It should be noted that the above temperature control method is only for illustration and is widely used at present. Any other suitable temperature control device can also be adopted, and this embodiment will not list them one by one.

[0031] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for testing viscosity of liquid admixture for cement mortar, characterized in that: include: Pedestal; A first support column and a second support column, wherein the first support column and the second support column are both arranged vertically and fixed on the left and right sides of the base respectively; A transposition plate, one end of the horizontal transposition plate being rotatably connected to the upper end of the second support column; A viscometer, the viscometer being connected to a lifting device, and the lifting device being fixed to a transposition plate; A third pillar, the third pillar being vertically fixed on the base and located behind the first pillar; A slide rail, wherein both ends of the horizontal slide rail are respectively connected to the upper ends of the first support and the third support, and the slide rail is an arc-shaped structure that coincides with the trajectory of the transposition plate rotating around the second support; the other end of the transposition plate is slidably connected to the slide rail; and A cleaning device is located on a base between the second support and the third support and is located below a test head of the viscometer.

2. The device for testing viscosity of liquid admixture for cement mortar according to claim 1, characterized in that: The slide rail is provided with an arc-shaped through groove distributed along the track line, and a guide head is fixed to the second end of the transposition plate, which is located in the arc-shaped through groove and can slide along the arc-shaped through groove.

3. The device for testing viscosity of liquid admixture for cement mortar according to claim 2, characterized in that: The guide head is a bolt, the upper end of which passes through the arc-shaped through slot and is threadedly connected to the transposition plate, and the bolt head diameter of the bolt is greater than the width of the arc-shaped through slot.

4. The device for testing viscosity of liquid admixture for cement mortar according to claim 1, characterized in that: Also included is a test platform, which is located on a base between the first pillar and the second pillar and below the test head.

5. The device for testing viscosity of liquid admixture for cement mortar according to claim 4, characterized in that: The upper surface of the test bench has a groove.

6. The device for testing viscosity of liquid admixture for cement mortar according to claim 4, characterized in that: The test bench has a heating unit.

7. The device for testing viscosity of liquid admixture for cement mortar according to claim 6, characterized in that: It also includes a temperature sensor connected to a temperature controller, and the temperature controller is connected to a heating unit of the test bench.

8. The device for testing viscosity of liquid admixture for cement mortar according to any one of claims 1 to 7, characterized in that: A limiting piece is provided on the upper end side wall of the second pillar, and the end of the transposition plate is rotatably sleeved on the upper end of the second pillar and supported on the limiting piece.

9. The device for testing viscosity of liquid admixture for cement mortar according to claim 8, characterized in that: The upper end of the second support column (3) is threadedly connected with a nut, and the nut is located above the transposition plate.

10. The device for testing viscosity of liquid admixture for cement mortar according to any one of claims 1 to 7, characterized in that: The cleaning device includes any one of an ultrasonic cleaning device and a magnetic stirring cleaning device.

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