Compatibility testing device for cement mortar and water reducing agent
By designing a compatibility testing device for the support column, rotating bearing, outer cylinder, gear ring, worm and handle, the problem of inconvenient cleaning of the Marsh cylinder is solved, automatic cleaning is achieved, and cleaning efficiency and convenience are improved.
Patent Information
- Application Number
- CN202422515737.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing Marsh cartridge is inconvenient to clean, which affects subsequent testing and has low cleaning efficiency.
A compatibility testing device including a support column, a rotating bearing, an outer cylinder, a Marsh cylinder, a gear ring, a worm and a handle was designed. The outer cylinder and the Marsh cylinder were driven to rotate by the worm to achieve automatic cleaning.
It improves the convenience and efficiency of cleaning the Marsh tube, prevents the cement mortar from solidifying, and ensures the continuity and accuracy of the test.
Smart Images
Figure CN223352478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of cement mortar testing equipment, in particular to a compatibility testing device for cement mortar and a water reducing agent. Background Art
[0002] A water reducer is a cementitious admixture used to reduce mixing water consumption while maintaining the slump of the cementitious material. It also enhances the strength of cementitious materials, improves workability, reduces drying shrinkage and shrinkage cracking, and enhances durability, making it a very important admixture in cementitious materials. Different types or models of water reducers have varying compatibility with cementitious materials, which in turn has varying effects on their performance. Therefore, compatibility and adaptability testing with cementitious materials is necessary before using or producing new water reducers.
[0003] One of the commonly used testing methods currently is the Marshall method, also known as the Marsh tube method. This method is not only simple and quick, but also has small experimental errors and good sensitivity. It can directly determine the performance of water-reducing agents in cement-based materials. This method is to load cement mortar containing water-reducing agent into a Marsh tube, and then use a stopwatch to measure the time required for the mortar to flow out of the nozzle at the bottom of the Marsh tube and fill a certain measuring cylinder. This is used to evaluate the effect of the water-reducing agent on the performance of the cement mortar, and then evaluate the compatibility of the water-reducing agent with the cement mortar. After the test is completed, the Marsh tube needs to be cleaned in time to remove the cement mortar adhering to the inner wall to prevent it from being difficult to remove after solidification, which will affect subsequent testing. However, the current Marsh tubes are generally fixed on a support frame, which is inconvenient to clean. Utility Model Content
[0004] In response to the above problems, the present invention discloses a compatibility test device for cement mortar and water reducing agent, which effectively improves the convenience and efficiency of cleaning the Marsh cylinder. Specifically, the compatibility test device is as follows.
[0005] A compatibility testing device for cement mortar and water reducing agent comprises: a support column, a rotating bearing, an outer cylinder, a Marsh cylinder, a gear ring, a worm, a support rod and a handle. The support column is fixed to the side wall of the outer ring of the horizontally arranged rotating bearing, thereby supporting the rotating bearing in the air. The rotating bearing is sleeved on the outer wall of the vertically arranged outer cylinder and the two are fixedly connected. The Marsh cylinder is vertically fixed in the outer cylinder and the upper ports of the two are sealed and fixedly connected. The nozzle on the bottom surface of the Marsh cylinder passes through the bottom surface of the outer cylinder and is located at its lower part. The gear ring is sleeved on the outer side wall of the outer cylinder and the two are fixedly connected. The worm is horizontally connected to the support rod, and the worm and the gear ring are meshed. The handle is fixedly connected to the end of the worm so as to rotate the worm, thereby driving the outer cylinder and the Marsh cylinder to rotate forward or reverse together.
[0006] Furthermore, both ends of the worm are rotatably connected to the support rod, thereby improving the stability of the worm. Preferably, both ends of the worm are fixedly connected to the handle.
[0007] Furthermore, a rotary motor is used to replace the handle, and the motor shaft of the rotary motor is connected to one end of the worm, so that the worm is driven to rotate by the motor.
[0008] Furthermore, it also includes a cement mortar filter, which is used to be connected to the upper port of the outer cylinder to filter the cement mortar injected into the Marsh cylinder.
[0009] Furthermore, the filter comprises a housing and a filter screen, wherein the filter screen is fixed in the inner cavity of the housing, and the inner diameter of the housing is larger than the outer diameter of the outer cylinder, so that the housing can be sleeved on the upper port of the outer cylinder.
[0010] Furthermore, the outer side wall of the shell is provided with a circle of baffles protruding outwards, and the outer diameter of the baffles is larger than the outer diameter of the rotating bearing.
[0011] Furthermore, the rotary bearing has a sealing plate to prevent foreign matter from entering into the gaps between the balls and affecting the rotation.
[0012] Furthermore, it also includes a rubber plug for sealing the lower port of the nozzle and a timer for timing.
[0013] Compared with the prior art, the present invention has the following beneficial effects: The above-mentioned testing device of the present invention arranges a Marsh cylinder in an outer cylinder, and arranges a rotating bearing, a gear ring, and a worm on the outer wall of the outer cylinder. Thus, the outer cylinder and the Marsh cylinder can be driven to rotate together by rotating the worm. When cleaning this rotatable Marsh cylinder, the experimenter can use a water pipe to add clean water into it from the upper port of the Marsh cylinder. Since the Marsh cylinder is a rotating turntable, the clean water entering it can automatically rinse the inner wall of the Marsh cylinder, thereby improving the cleaning effect. At the same time, the cleaning efficiency can be further accelerated by repeatedly switching the forward and reverse rotation of the Marsh cylinder. The cleaned water flows out of the nozzle of the Marsh cylinder and enters the wastewater bucket placed in advance below for collection. The above-mentioned testing device of the present invention effectively improves the convenience of cleaning the Marsh cylinder, and improves the cleaning efficiency and cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Schematic diagram of the structure of the compatibility test device of cement mortar and water reducing agent in the following examples.
[0015] Figure 2 Schematic diagram of the structure of the rotatable Marsh cylinder in the following embodiments.
[0016] Figure 3 This is a top view of another Marsh cylinder rotation drive mechanism in the following embodiments.
[0017] Figure 4 Schematic diagram of the structure of the cement mortar filter in the following embodiments.
[0018] The symbols in the above drawings represent: 1. support column, 2. rotating bearing, 3. outer cylinder, 4. Marsh cylinder, 5. ring gear, 6. worm, 7. support rod, 8. handle, 9. rotating motor, 10. housing, 11. filter screen, 12. baffle, 13. water pipe, 2-1, sealing plate, 4-1, nozzle, 4-2, rubber plug, 4-3, measuring cylinder. DETAILED DESCRIPTION
[0019] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.
[0020] For ease of description, the words "upper," "lower," "left," and "right" appearing in this utility model merely indicate the same orientation as in the drawings and do not limit the structure. These are intended solely to facilitate and simplify the description of this utility model and do not indicate or imply that the device or component referred to requires a specific orientation, construction, or operation. Therefore, they should not be construed as limiting this utility model. This utility model will now be further described with reference to the drawings and specific embodiments.
[0021] refer to Figure 1 and Figure 2 , an example of a compatibility testing device for cement mortar and water reducing agent is provided, comprising: a support column 1, a rotating bearing 2, an outer cylinder 3, a marsh cylinder 4, a gear ring 5, a worm 6, a support rod 7, and a handle 8. Specifically, the rotating bearing 2 is arranged horizontally, and the support column 1 is arranged vertically, with its upper end fixedly connected to the outer ring sidewall of the rotating bearing 2 by welding or other means. At least three support columns 1 are evenly distributed along the circumference of the rotating bearing 2 to form a support frame to support the rotating bearing 2 in the air.
[0022] The outer cylinder 3 is arranged vertically, and the rotating bearing 2 is sleeved on the outer wall of the outer cylinder 3 and the two are fixedly connected, so that the outer cylinder 3 can rotate in the water surface. The outer cylinder 3 is a cylindrical body with an open upper end, and the Marsh cylinder 4 is a conical cylinder or funnel-shaped cylinder with a nozzle 4-1 at its lower end. The Marsh cylinder 4 of the above structure is fixed vertically in the outer cylinder 3 and the upper ends of the two are sealed and fixedly connected to form a rotatable Marsh cylinder assembly. The nozzle 4-1 passes through the bottom surface of the outer cylinder 3 and is located at its lower part. At this time, the lower part of the Marsh cylinder 4 supports the bottom surface of the outer cylinder 3, thereby utilizing the bottom surface of the outer cylinder 3 and the conical structure characteristics of the Marsh cylinder 4 to support the Marsh cylinder 4, thereby improving the bearing capacity of the Marsh cylinder 4.
[0023] The gear ring 5 is sleeved on the outer wall of the outer cylinder 3 and the two are fixedly connected. The worm 6 is arranged horizontally and meshes with the gear ring 5. The support rod 7 is vertically fixed to the base plate or the ground. Both ends of the worm 6 pass through the bearings in the mounting holes on the support rod 7, thereby supporting the worm 6 to rotate on the outside of the outer cylinder 3. The handle 8 is fixedly connected to the end of the worm 6. Figure 1 As shown, the handle 8 may adopt a Z-shaped structure, and the worm 6 is rotated by the handle 8, thereby driving the outer cylinder 3 and the Marsh cylinder 4 to rotate forward or reverse together.
[0024] In another embodiment, Figure 1 As shown, both ends of the worm 6 in the above embodiment are fixedly connected with the handles 8, so that the worm 6 can be driven by any one of the handles 8, thereby improving the convenience of use of the compatibility testing device.
[0025] In another embodiment, Figure 3 As shown, a rotary motor 9 is used to replace the handle 8 in the above embodiment, and the motor shaft of the rotary motor 9 is connected to one end of the worm 6, so that the outer cylinder 3 and the Marsh cylinder 4 are rotated by the motor instead of manually.
[0026] In another embodiment, Figure 2 As shown, the rotary bearing 2 also has a sealing plate 2-1 to prevent foreign matter from entering the balls of the rotary bearing 2 and affecting the rotation.
[0027] In another embodiment, Figure 1 As shown, the compatibility testing device of the above embodiment also includes a rubber plug 4-2, which can be made of rubber or plastic. It is primarily used to seal the lower end of the nozzle 4-1 to prevent leakage during the process of filling the marsh tube 4 with cement mortar. After filling to a specified height (a marking line can be set on the marsh tube 4), the rubber plug 4-2 blocking the nozzle 4-1 is opened, allowing the cement mortar in the marsh tube 4 to flow out, and timing is simultaneously started. Therefore, a stopwatch is also required for timing.
[0028] In another embodiment, the compatibility testing device of the above embodiment further comprises a filter for cement mortar. Figure 1 and Figure 4 The filter includes a shell 10 and a filter screen 11. The filter screen 11 is fixed in the inner cavity of the shell 10, and the inner diameter of the shell 10 is larger than the outer diameter of the outer cylinder 3, so that the shell 10 can be put on the upper port of the outer cylinder 3 when in use. The shell 10 and the filter screen 11 can be made of plastic or stainless steel and are mainly used to filter the cement mortar injected into the Marsh cylinder 4 to prevent the presence of some large lumps in the mortar due to insufficient stirring, which affects the normal flow of the mortar in the Marsh cylinder 4 and even blocks the nozzle 4-1, affecting the accuracy of the test results. The pore size of the filter screen 11 is larger than the particle size of the sand in the mortar and smaller than the diameter of the nozzle 4-1.
[0029] In another embodiment, referring to Figure 1 and Figure 4 The outer wall of the shell 10 of the above embodiment has a circle of baffles 12 that are horizontally arranged and protrude outward, and the outer diameter of the baffle 12 is larger than the outer diameter of the rotating bearing 2. It is mainly used to prevent cement mortar from spilling to the outside and contaminating the rotating bearing 2 below when filling the Marsh cylinder 4 with cement mortar.
[0030] When using the above-mentioned apparatus to test the compatibility of cement mortar and a water-reducing agent, the nozzle 4-1 is first sealed with the rubber plug 4-2, and then cement mortar is added to the Marsh cylinder 4 to a specified height. One experimenter then opens the rubber plug 4-2 to allow the cement mortar in the Marsh cylinder 4 to flow out, while another experimenter simultaneously starts a timer to measure the amount of cement mortar entering the measuring cylinder 4-3 below the Marsh cylinder 4. The timer is stopped when the amount of cement mortar entering the measuring cylinder 4-3 below the Marsh cylinder 4 reaches a specified level (e.g., 200 ml). The measured time can be used to evaluate the effect of the water-reducing agent on the cement mortar and, therefore, the compatibility of the two.
[0031] After the above test is completed, it is necessary to drain the remaining cement mortar in the Marsh tube 4 and clean the inside of the Marsh tube 4 to prevent the mortar from sticking to the Marsh tube after solidification and hardening, affecting subsequent tests. At this time, one experimenter can use the handle 8 to drive the worm 6 to rotate, thereby driving the outer tube 3 and the Marsh tube 4 to rotate together, and another experimenter can use the water pipe 13 to add clean water into the upper port of the Marsh tube 4 (such as Figure 1 As shown), or the outer cylinder 3 and the Marsh cylinder 4 are driven to rotate by the above-mentioned rotary motor 9. Since the Marsh cylinder 4 is in a rotating state, the clean water entering it can automatically flush the inner wall of the Marsh cylinder 4, which can effectively improve the cleaning efficiency and cleaning effect. At the same time, multiple switching of the forward and reverse rotation of the Marsh cylinder 4 helps to further improve the cleaning efficiency and cleaning effect. The flushed mortar mixture flows out of the nozzle 4-1 and is collected in the waste water bucket placed in advance below. The above-mentioned testing device effectively improves the convenience of cleaning the Marsh cylinder, and overcomes the problem that the current Marsh cylinder is generally fixed on a support frame, requiring experimenters to hold tools such as brushes to brush, which is inconvenient to clean and labor-intensive.
[0032] Finally, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this utility model shall be included in the scope of protection of this utility model. Although the above description of the specific embodiments of the utility model is combined with the accompanying drawings, it does not limit the scope of protection of this utility model. Those skilled in the art should understand that based on the technical solution of this utility model, various modifications or variations that can be made by those skilled in the art without expending creative effort are still within the scope of protection of this utility model.
Claims
1. A compatibility testing device for cement mortar and water reducing agent, characterized in that: include: A support column, the support column is fixed to the side wall of the outer ring of the horizontally arranged rotating bearing, so that the rotating shaft is supported in the air; The outer cylinder, the rotating bearing is sleeved on the outer wall of the vertically arranged outer cylinder and the two are fixedly connected; A Marsh tube, wherein the Marsh tube is vertically fixed in the outer tube and the upper ends of the two are sealed and fixedly connected; the nozzle on the bottom surface of the Marsh tube passes through the bottom surface of the outer tube and is located below the bottom surface of the outer tube; A gear ring, the gear ring is sleeved on the outer wall of the outer cylinder and the two are fixedly connected; A worm, the worm being horizontally rotatably connected to the support rod and meshing with the ring gear; A handle is fixedly connected to the end of the worm.
2. The compatibility testing device for cement mortar and water reducing agent according to claim 1, characterized in that: Both ends of the worm are rotatably connected to the support rod.
3. The compatibility testing device for cement mortar and water reducing agent according to claim 2, characterized in that: Both ends of the worm are fixedly connected with the handles.
4. The compatibility testing device for cement mortar and water reducing agent according to claim 1, characterized in that: A rotary motor is used to replace the handle, and a motor shaft of the rotary motor is connected to one end of the worm.
5. The compatibility testing device for cement mortar and water reducing agent according to claim 1, characterized in that: The rotary bearing has a sealing plate.
6. The compatibility testing device for cement mortar and water reducing agent according to any one of claims 1 to 5, characterized in that: It also includes a cement mortar filter, which is used to be connected to the upper port of the outer cylinder.
7. The compatibility testing device for cement mortar and water reducing agent according to claim 6, characterized in that: The filter comprises a shell and a filter screen; the filter screen is fixed in the inner cavity of the shell, and the inner diameter of the shell is greater than the outer diameter of the outer cylinder.
8. The compatibility testing device for cement mortar and water reducing agent according to claim 7, characterized in that: The outer side wall of the shell is provided with a circle of baffles protruding outwards, and the outer diameter of the baffles is larger than the outer diameter of the rotating bearing.
9. The compatibility testing device for cement mortar and water reducing agent according to any one of claims 1 to 5, characterized in that: Also included is a rubber plug for sealing the lower port of the nozzle.
10. The compatibility testing device for cement mortar and water reducing agent according to any one of claims 1 to 5, characterized in that: Also included is a timer for timing.