Device for testing water retention capacity of building mortar

Abstract

The utility model relates to the technical field of mortar performance testing, in particular to a building mortar water retention performance testing device which comprises a base, a pressing block and a filter plate. A material containing box for containing mortar is arranged on the base, and the filter plate is slidably connected with the inner wall of the material containing box; a plurality of pieces of absorbent paper are arranged on the filter plate, the pressing block is pressed at the upper ends of the absorbent paper, a fixing frame is arranged on the base, and a lifting mechanism for lifting the pressing block is arranged on the fixing frame. The filter plate is in sliding connection with the inner wall of the material containing box, so that the filter plate is tightly attached to the surface of mortar, the absorbent paper further completely absorbs water separated out from the mortar, and the detection result is more accurate; the rotary knob is rotated to drive the worm to rotate, the worm is in meshed connection with the worm gear, the mounting shaft drives the take-up roller to rotate to wind the cable on the take-up roller, the cable lifts the pressing block, transmission of the worm gear and the worm has self-locking performance, and the height of the pressing block can be automatically positioned and fixed by loosening the rotary knob.

Description

Technical Field

[0001] The utility model relates to the technical field of mortar performance testing, in particular to a building mortar water retention performance testing device. Background Technique

[0002] The water retention of mortar refers to the ability of mortar to retain water. That is, the property of the freshly mixed mortar to separate water from the binder and aggregates quickly during transportation, parking and construction. For mortar with good water retention, water is not easy to lose, and it is easy to spread into a uniform and dense mortar layer; on the contrary, it is easy to produce stratification, bleeding, water loss, difficult to construct and operate, and at the same time, it also affects the normal hydration and hardening of cement, resulting in a decrease in strength and bonding force.

[0003] A Chinese patent with the authorization announcement number CN214374807U discloses a mortar water retention testing device, including a circular test mold. An annular rubber gasket is arranged at the top edge of the circular test mold. A metal filter screen covering the circular test mold is fixed inside the annular rubber gasket. A plurality of guide rods are evenly fixed at the top of the annular rubber gasket. A plurality of layers of filter paper are placed on the top of the metal filter screen. Guide holes are opened on the edge of the filter paper that match the guide rods one by one. A pressing cover is placed on the top of the topmost layer of filter paper, and a metal pressing block is placed on the top of the pressing cover. In this utility model, by setting an annular rubber gasket with a guiding filter paper at the top of the circular test mold, the positioning of the filter paper can be restricted, ensuring the neatness during the stacking of the filter paper, so that the metal filter screen is evenly stressed, thus ensuring the uniform water absorption of the subsequent filter paper, and further improving the accuracy of the mortar water retention test.

[0004] The following defects exist in the above technical solution: In the above mortar water retention testing device, the metal pressing block presses on multiple filter papers. The deformation of the metal filter screen is mainly the inward depression of the middle part. The filter paper also depresses downward to absorb the separated water, but the edge position of the metal filter screen does not deform downward, resulting in incomplete water absorption at the edge position. Content of the Utility Model

[0005] The purpose of the utility model is to propose a building mortar water retention performance testing device aiming at the problems existing in the background technique.

[0006] The technical solution of the utility model: A building mortar water retention performance testing device includes a base, a pressing block and a filter plate;

[0007] A material loading box for holding mortar is arranged on the base. The filter plate is slidably connected to the inner wall of the material loading box, and the filter plate and the material loading box are coaxially distributed;

[0008] A plurality of absorbent papers are arranged on the filter plate. The pressing block presses on the upper ends of the plurality of absorbent papers. A fixing frame is arranged on the base, and a lifting mechanism for lifting the pressing block is arranged on the fixing frame.

[0009] Preferably, the lifting mechanism includes a cable and a mounting shaft;

[0010] The fixing frame is provided with a mounting frame, the mounting shaft is rotatably connected to the mounting frame, and a wire winding roller is arranged on the mounting shaft;

[0011] The mounting frame is provided with a mounting shell, a worm gear is arranged on the mounting shaft, a worm is rotatably arranged on the mounting shell, the worm is meshed with the worm gear, and a knob is arranged at the end of the worm;

[0012] One end of the cable is wound on the wire winding roller, and the other end of the cable is connected to the pressing block.

[0013] Preferably, baffles are arranged at both ends of the wire winding roller, the baffles are coaxially distributed with the wire winding roller, and the outer diameter value of the baffle is greater than the outer diameter value of the wire winding roller.

[0014] Preferably, a plurality of connecting wires are arranged at the end of the cable, a plurality of fixing blocks are arranged on the pressing block and correspond to the connecting wires one by one, the fixing blocks are evenly distributed in a circle on the pressing block, and the connecting wires are connected to the corresponding fixing blocks.

[0015] Preferably, a plurality of convex blocks are arranged on the inner wall of the material storage box, grooves are arranged on the outer side of the filter plate, and the grooves are slidably matched with the convex blocks.

[0016] Preferably, a fixing rod is arranged on the filter plate, the fixing rod is coaxially distributed with the filter plate, through holes are arranged on both the water absorption paper and the pressing block, and the fixing rod passes through the through holes.

[0017] Preferably, a rubber strip is arranged on the outer peripheral surface of the filter plate, and the rubber strip is pressed against the inner wall of the material storage box.

[0018] Compared with the prior art, the above technical solutions of the present utility model have the following beneficial technical effects:

[0019] 1. In the present utility model, the filter plate is slidably connected to the inner wall of the material storage box, so that the filter plate is closely attached to the surface of the mortar, further enabling the water absorption paper to completely absorb the water separated out from the mortar, and the detection result is more accurate.

[0020] 2. In the present utility model, rotating the knob drives the worm to rotate, the worm is meshed with the worm gear, the mounting shaft drives the wire winding roller to rotate to wind the cable on the wire winding roller, the cable lifts the pressing block, and the worm and worm gear transmission has self-locking property. Loosing the knob can automatically position and automatically fix the height of the pressing block.

[0021] 3. In the present utility model, the fixing rod is at the upper end of the filter plate. When placing the water absorption paper, directly pass the through hole through the fixing rod, so that the water absorption paper is coaxially distributed with the filter plate and the material storage box. The fixing rod is convenient for preventing the filter plate in the material storage box, and it is also convenient to take out the filter plate and the water absorption paper after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional view of an embodiment proposed by the present utility model.

[0023] Figure 2 This is a cross-sectional view of a test device for the water retention performance of building mortar proposed by the present utility model.

[0024] Figure 3 This is a schematic structural view of a test device for the water retention performance of building mortar proposed by the present utility model.

[0025] Figure 4 For Figure 1 This is a schematic internal structure view at position A in

[0026] Reference numerals: 1, base; 2, material storage box; 3, fixing frame; 4, pressing block; 5, wire winding roller; 6, cable; 7, convex block; 8, fixing rod; 9, knob; 10, absorbent paper; 11, mortar; 12, filter plate; 13, rubber strip; 14, through hole; 15, groove; 16, mounting shaft; 17, mounting frame; 18, worm; 19, worm gear; 20, mounting shell; 21, connecting wire. Specific embodiments

[0027] Embodiment 1

[0028] As Figures 1-4 shown, a test device for the water retention performance of building mortar proposed by the present utility model includes a base 1, a pressing block 4 and a filter plate 12;

[0029] A material storage box 2 for containing mortar 11 is provided on the base 1, the filter plate 12 is slidably connected to the inner wall of the material storage box 2, and the filter plate 12 and the material storage box 2 are coaxially distributed;

[0030] Furthermore, a plurality of convex blocks 7 are provided on the inner wall of the material storage box 2, and a groove 15 is provided on the outer side of the filter plate 12, and the groove 15 is slidably connected with the convex block 7 in a matching manner;

[0031] Furthermore, a rubber strip 13 is provided on the outer peripheral surface of the filter plate 12, and the rubber strip 13 is pressed against the inner wall of the material storage box 2;

[0032] A plurality of absorbent papers 10 are provided on the filter plate 12, the pressing block 4 is pressed on the upper ends of the plurality of absorbent papers 10, a fixing frame 3 is provided on the base 1, and a lifting mechanism for lifting the pressing block 4 is provided on the fixing frame 3.

[0033] In the present utility model, test mortar 11 is put into the material storage box 2, the filter plate 12 is slidably connected with the material storage box 2 and pressed on the upper end of the mortar 11, several absorbent papers 10 are placed on the upper end of the filter plate 12, the lifting mechanism presses the pressing block 4 on the upper end of the absorbent papers 10, the cable 6 is in a relaxed state, and when the detection time arrives, the lifting mechanism drives the pressing block 4 to move upward, and then the absorbent papers 10 can be taken out to check the amount of water separated out from the mortar; in the present utility model, the filter plate 12 is slidably connected to the inner wall of the material storage box 2, so that the filter plate 12 is closely attached to the surface of the mortar 11, further enabling the absorbent papers 10 to completely absorb the water separated out from the mortar 11, and the detection result is more accurate.

[0034] Example 2

[0035] As Figures 1-2 and Figure 4 shown, a test device for water retention performance of building mortar proposed by the present utility model. Compared with Example 1, in this embodiment, the lifting mechanism includes a cable 6 and a mounting shaft 16;

[0036] A mounting frame 17 is provided on the fixing frame 3. The mounting shaft 16 is rotatably connected to the mounting frame 17, and a wire winding roller 5 is provided on the mounting shaft 16;

[0037] A mounting shell 20 is provided on the mounting frame 17. A worm gear 19 is provided on the mounting shaft 16. A worm 18 is rotatably provided in the mounting shell 20. The worm 18 is meshed and connected with the worm gear 19, and a knob 9 is provided at the end of the worm 18;

[0038] One end of the cable 6 is wound on the wire winding roller 5, and the other end of the cable 6 is connected to the pressing block 4.

[0039] Furthermore, baffles are provided at both ends of the wire winding roller 5. The baffles are coaxially distributed with the wire winding roller 5, and the outer diameter value of the baffles is greater than the outer diameter value of the wire winding roller 5.

[0040] Furthermore, a plurality of connecting wires 21 are provided at the end of the cable 6. A plurality of fixing blocks are provided on the pressing block 4 and correspond to the connecting wires 21 one by one. The fixing blocks are evenly distributed in a circle on the pressing block 4, and the connecting wires 21 are connected to the corresponding fixing blocks.

[0041] In this embodiment, rotating the knob 9 drives the worm 18 to rotate. The worm 18 is meshed and connected with the worm gear 19. The mounting shaft 16 drives the wire winding roller 5 to rotate to wind the cable 6 on the wire winding roller 5. The cable 6 lifts the pressing block 4. On the contrary, rotating the knob 9 in the reverse direction can lower the pressing block 4 to press tightly on the absorbent paper 10. The transmission of the worm gear 19 and the worm 18 has self-locking property. Loosening the knob 9 can automatically position, further fixing the height of the pressing block 4.

[0042] Example 3

[0043] As Figures 1-3 shown, a test device for water retention performance of building mortar proposed by the present utility model. Compared with Example 1, in this embodiment, a fixing rod 8 is provided on the filter plate 12. The fixing rod 8 is coaxially distributed with the filter plate 12. Through holes 14 are provided on both the absorbent paper 10 and the pressing block 4. The through holes 14 are coaxially distributed with the absorbent paper 10 and the pressing block 4. The fixing rod 8 passes through the through holes 14.

[0044] In this embodiment, the fixing rod 8 is at the upper end of the filter plate 12. When placing the absorbent paper 10, directly pass the through hole 14 through the fixing rod 8, so that the absorbent paper 10 is coaxially distributed with the filter plate 12 and the material storage box 2. The fixing rod 8 is convenient for preventing the filter plate 12 in the material storage box 2, and at the same time, it is convenient to take out the filter plate 12 and the absorbent paper 10 after use.

[0045] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited thereto, and various changes can be made without departing from the gist of the present utility model within the scope of knowledge possessed by those skilled in the relevant art.

Claims

1. A test device for water retention performance of building mortar, characterized in that: It comprises a base (1), a pressing block (4) and a filter plate (12); A material holding box (2) for holding mortar (11) is provided on the base (1), a filter plate (12) is slidably connected to the inner wall of the material holding box (2), and the filter plate (12) and the material holding box (2) are coaxially distributed; A plurality of absorbent papers (10) are arranged on the filter plate (12), a pressing block (4) is pressed on the upper ends of the plurality of absorbent papers (10), a fixing frame (3) is arranged on the base (1), and a lifting mechanism for lifting the pressing block (4) is arranged on the fixing frame (3).

2. A building mortar water retention performance test device according to claim 1, characterized in that: The lifting mechanism includes a cable (6) and a mounting shaft (16); A mounting frame (17) is provided on the fixed frame (3), a mounting shaft (16) is rotatably connected to the mounting frame (17), and a wire take-up roller (5) is provided on the mounting shaft (16); A mounting housing (20) is provided on the mounting frame (17), a worm wheel (19) is provided on the mounting shaft (16), a worm (18) is rotatably provided on the mounting housing (20), the worm (18) is meshingly connected with the worm wheel (19), and a knob (9) is provided at the end of the worm (18); One end of the cable (6) is wound around the take-up roller (5), and the other end of the cable (6) is connected to the pressing block (4).

3. A building mortar water retention performance test device according to claim 2, characterized in that: Baffles are provided at both ends of the wire take-up roller (5), the baffles are coaxially distributed with the wire take-up roller (5), and the outer diameter of the baffles is greater than the outer diameter of the wire take-up roller (5).

4. A building mortar water retention performance test device according to claim 2, characterized in that: The end of the cable (6) is provided with a plurality of connecting wires (21), the pressing block (4) is provided with a plurality of fixing blocks corresponding one to one with the connecting wires (21), the fixing blocks are evenly distributed around the circumference of the pressing block (4), and the connecting wires (21) are connected to the corresponding fixing blocks.

5. A building mortar water retention performance test device according to claim 1, characterized in that: The inner wall of the material holding box (2) is provided with a plurality of protrusions (7), the outer side of the filter plate (12) is provided with a groove (15), and the groove (15) is connected to the protrusion (7) in a sliding manner.

6. A building mortar water retention performance test device according to claim 1, characterized in that: A fixing rod (8) is provided on the filter plate (12), and the fixing rod (8) is coaxially distributed with the filter plate (12). Through holes (14) are provided on the absorbent paper (10) and the pressing block (4), and the fixing rod (8) passes through the through holes (14).

7. A building mortar water retention performance test device according to claim 1, characterized in that: A rubber strip (13) is provided on the outer peripheral surface of the filter plate (12), and the rubber strip (13) is pressed tightly against the inner wall of the material holding box (2).

Images