Device for detecting water absorption rate of concrete gravel aggregate

Abstract

The utility model is applicable to the technical field of concrete gravel aggregate detection, and discloses a concrete gravel aggregate water absorption detection device which is characterized in that mounting frames are fixedly mounted on the surfaces of two ends of the top of the inner side of a fixed frame, an electric push rod is fixedly mounted on the inner side of each mounting frame, and a fixed sleeve is fixedly mounted at the bottom of a transmission shaft of each electric push rod; an air inlet pipe is fixedly installed between the inner sides of the two sets of fixing sleeves in a transverse penetrating mode, the top of the air inlet pipe fixedly communicates with the bottom of the connecting pipe, and a plurality of sets of air suction pipes fixedly communicate with the bottom of the air inlet pipe. According to the technical scheme, the air exhaust position of the air inlet pipe can be adjusted according to the height of gravel aggregate accumulated in the weighing frame, water vapor generated in the gravel aggregate drying process can be conveniently exhausted and discharged, the situation that the drying efficiency of the gravel aggregate is affected due to accumulation of the water vapor is avoided, and the drying efficiency of the gravel aggregate is improved. The detection efficiency of the gravel aggregate weighing and the water absorption rate is further influenced.

Description

Technical Field

[0001] The utility model is applicable to the technical field of concrete sand and gravel aggregate detection, and particularly relates to a concrete sand and gravel aggregate water absorption rate detection device. Background Art

[0002] At present, concrete refers to an artificial stone made by mixing cement as the main cementitious material with water, sand, gravel, and chemical admixtures and mineral admixtures when necessary, in appropriate proportions, and then evenly stirred, compacted, formed, and cured and hardened. When concrete is used, it is necessary to test whether the quality of the concrete meets the requirements for construction use. Therefore, its water absorption rate needs to be tested to discover the internal pores of the concrete, thereby reflecting the quality of the concrete.

[0003] However, when testing the water absorption rate of concrete sand and gravel aggregates, the method is to pour the corresponding wet sand and gravel into a weighing frame, dry the sand and gravel aggregates, quickly extract the water from them, and then weigh the dried sand and gravel aggregates before testing the water absorption rate. In order to improve the efficiency of the drying and weighing test, a corresponding extraction mechanism is often used to remove the dried evaporated water vapor from the weighing frame. However, the corresponding extraction mechanism cannot be adjusted for different sample sizes, resulting in the dried evaporated water vapor not being able to be quickly extracted and accumulating inside the weighing frame, affecting the weighing test efficiency of the sand and gravel aggregates. Therefore, we propose a device for testing the water absorption rate of concrete sand and gravel aggregates. Utility Model Content

[0004] The main purpose of the utility model is to provide a device for detecting the water absorption rate of concrete sand and gravel aggregates, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A device for detecting water absorption of concrete sand and gravel aggregates comprises a drying box, a weighing frame is rotatably mounted inside the drying box, and a fixing frame is detachably mounted on the top of the drying box by bolts;

[0007] An air extraction pipe is vertically fixedly installed at the middle end of the top of the fixed frame, an air extraction pump is fixedly installed at the bottom of the air extraction pipe, a corrugated hose is fixedly connected to the bottom of the air extraction pipe, and a connecting pipe is fixedly connected to the bottom of the corrugated hose;

[0008] The surfaces of both ends of the inner top of the fixed frame are fixedly installed with mounting frames, an electric push rod is fixedly installed on the inner side of each mounting frame, and a fixed sleeve is fixedly installed on the bottom of the transmission shaft of each electric push rod. An air intake pipe is fixedly installed transversely between the inner sides of the two groups of fixed sleeves, and the top of the air intake pipe and the bottom of the connecting pipe are fixedly connected. The bottom of the air intake pipe is fixedly connected with an air intake pipe, and the number of the air intake pipes is several groups;

[0009] A filter frame is fixedly installed transversely between the bottoms of each of the fixed sleeves, and the filter frame is located below the air inlet pipe.

[0010] By adopting the above technical solution, the operation of the electric push rod can drive the air inlet pipe to move vertically, and then the exhaust position of the air inlet pipe can be adjusted according to the height of the sand and gravel aggregates piled up inside the weighing frame, so as to facilitate the exhaust and discharge of water vapor generated during the drying process of the sand and gravel aggregates, thereby avoiding the accumulation of water vapor and affecting the drying efficiency of the sand and gravel aggregates, and further affecting the weighing efficiency of the sand and gravel aggregates and the water absorption rate detection efficiency.

[0011] As an optional solution to the technical solution of the present application, a rotating plate is rotatably installed at the bottom inner side of the weighing frame, a transmission screw is vertically fixedly installed at the middle end of the top of the rotating plate, a connecting screw is sleeved on the top of the transmission screw by threading, and the number of connecting screws is several groups, each of the connecting screws is fixedly installed on the top surface of a fixed block, each of the fixed blocks is fixedly installed on the top surface of a connecting screw, and the outer side of the connecting screw is screwed to the inside of the connecting screw through a thread, and a stirring plate is fixedly installed on the outer surface of each fixed block, and the stirring plate is located above the rotating plate.

[0012] By adopting the above technical solution, through the mutual connection of the connecting spiral tube and the connecting screw, and the adaptability adjustment of the stirring range of the stirring plate, the stirring plate can fully stir and disperse the sand and gravel aggregate when drying the sand and gravel aggregate, further improving the drying efficiency of the sand and gravel aggregate and improving the detection applicability of the overall mechanism.

[0013] As an optional solution of the technical solution of the present application, a rotating motor is fixedly installed at the middle end of the bottom of the drying box, and the top of the rotating motor transmission shaft is fixedly connected to the bottom surface of the rotating plate through a coupling.

[0014] By adopting the above technical solution, the rotating plate can be driven to rotate by the structural action of the rotating motor, thereby driving the stirring plate to rotate, thereby stirring and breaking up the concrete sand and gravel aggregates.

[0015] As an optional solution of the technical solution of the present application, sliding blocks are fixedly installed on both side surfaces of the bottom of the rotating plate, a guide groove is opened at the bottom inner side of the weighing frame, and the sliding block is slidably inserted into the guide groove.

[0016] By adopting the above technical solution, the rotation stability of the rotating plate is ensured by the guiding sliding action of the guide groove on the sliding block.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. A device for detecting the water absorption rate of concrete sand and gravel aggregates according to the technical solution of the present application connects the exhaust pipe and the air inlet pipe through a corrugated hose, and an electric push rod is arranged inside the fixed frame. After the bottom of the electric push rod transmission shaft is connected to the outer side of the air inlet pipe through the fixed sleeve, the electric push rod can drive the air inlet pipe vertically when it is in operation, and can drive the air inlet pipe to move vertically synchronously inside the weighing frame. At the same time, under the connecting action of the corrugated hose, the corrugated hose can be pulled and stretched as the air inlet pipe moves vertically, and the connectivity between the exhaust pipe and the air inlet pipe can still be guaranteed. Furthermore, the air inlet pipe can adjust the exhaust position of the air inlet pipe according to the height of the sand and gravel aggregates piled up inside the weighing frame, so as to facilitate the exhaust and discharge of water vapor generated during the drying process of the sand and gravel aggregates, avoid the accumulation of water vapor and affect the drying efficiency of the sand and gravel aggregates, and further affect the weighing of the sand and gravel aggregates and the water absorption rate detection efficiency.

[0019] 2. The technical solution of the present application is a device for detecting the water absorption rate of concrete sand and gravel aggregates. A transmission screw is vertically arranged on the top of a rotating plate, and a connecting screw and a connecting screw are respectively arranged at both ends of the side of a fixed block. After the connecting screw is screwed and sleeved on the outside of the connecting screw, the number of stirring plates and the stirring range are adjusted according to the amount of samples to be tested inside the weighing frame. When the sand and gravel aggregates are dried, the stirring plates can fully stir and disperse the sand and gravel aggregates, thereby further improving the drying efficiency of the sand and gravel aggregates and improving the detection applicability of the overall mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of a device for detecting water absorption rate of concrete sand and gravel aggregates according to the present utility model;

[0021] Figure 2 This is a schematic diagram of the top cross-sectional structure of a fixed block of a concrete sand and gravel aggregate water absorption rate detection device of the utility model;

[0022] Figure 3 This is a schematic diagram of the top cross-sectional structure of a drying box of a concrete sand and gravel aggregate water absorption rate detection device of the present utility model.

[0023] Figure numerals: 1. Drying box; 11. Weighing frame; 12. Rotating plate; 2. Fixed frame; 21. Exhaust pipe; 22. Corrugated hose; 23. Connecting pipe; 24. Mounting frame; 25. Electric push rod; 26. Fixed sleeve; 27. Inlet pipe; 28. Suction pipe; 29. Filter frame; 3. Rotating motor; 31. Transmission screw; 32. Fixed block; 33. Connecting screw; 34. Connecting screw; 35. Stirring plate; 4. Guide groove; 41. Sliding block; 5. Exhaust pump. DETAILED DESCRIPTION

[0024] like Figure 1-3 As shown, the utility model provides a technical solution: a device for detecting the water absorption rate of concrete sand and gravel aggregate, a rotating plate 12 is rotatably installed at the bottom inner side of the weighing frame 11, a transmission screw 31 is vertically fixedly installed at the middle end of the top of the rotating plate 12, the top of the transmission screw 31 is screwed with a connecting screw 33, and the number of the connecting screws 33 is several groups, each connecting screw 33 is fixedly installed with a fixing block 32 on the top surface, each fixing block 32 is fixedly installed with a connecting screw 34 on the top surface, and the outer side of the connecting screw is screwed into the inside of the connecting screw 33 by a thread, and the outer surface of each fixing block 32 is fixedly installed with a stirring plate 35, and the stirring plate 35 is located above the rotating plate 12.

[0025] In this technical solution (through Figure 1 、 Figure 2 and Figure 3 As shown), a rotating motor 3 is fixedly installed at the middle end of the bottom of the drying box 1, and the top of the transmission shaft of the rotating motor 3 is fixedly connected to the bottom surface of the rotating plate 12 through a coupling.

[0026] In this technical solution (through Figure 1 、 Figure 2 and Figure 3 The bottom of the air intake pipe 28 is fixedly connected to the bottom of the air intake pipe 28, and the number of air intake pipes 28 is several groups. A filter frame 29 is fixedly installed between the bottom of each fixed sleeve 26 and the bottom of the air intake pipe 27.

[0027] In this technical solution (through Figure 1 、 Figure 2 and Figure 3 As shown), sliding blocks 41 are fixedly mounted on both sides of the bottom surface of the rotating plate 12, a guide groove 4 is opened at the bottom inner side of the weighing frame 11, and the sliding block 41 is slidably inserted into the guide groove 4.

[0028] During operation, after the fixing frame 2 is removed from the top of the drying box 1 as a whole by screwing the bolts, the number of stirring plates 35 to be used and the installation height are adjusted according to the amount of concrete sand and gravel aggregate samples to be tested. After the connecting screw 33 at the bottom of the stirring plate 35 to be installed is screwed and sleeved on the surface of the connecting screw 34, the number and height of the stirring plates 35 are increased, and then the concrete sand and gravel aggregate to be tested is poured onto the surface of the rotating plate 12 inside the weighing frame 11, so that the stirring plates 35 can be evenly distributed inside the sand and gravel aggregate. After the sand and gravel aggregate samples are weighed in combination with the weighing mechanism inside the weighing frame 11, the fixing frame 2 is installed as a whole on the top of the drying box 1, and the electric push rod is turned on by the external control switch. 25, so that it runs and provides corresponding driving force to the air inlet pipe 27, so that the suction pipe 28 at the bottom of the air inlet pipe 27 can move and approach the top of the aggregate, and then the drying mechanism outside the drying box 1 is started to dry the sand and gravel aggregate inside the drying box 1, and the rotating motor 3 is started simultaneously to run and drive the transmission screw 31 and the stirring plate 35 to rotate synchronously, stirring and breaking up the sample inside the weighing frame 11, thereby improving the drying rate of the sample, and then the exhaust pump 5 is started simultaneously to run and transport the evaporated water vapor to the exhaust pipe 21 through the suction pipe 28 and the corrugated hose 22, so as to quickly extract the dried water vapor and avoid excessive accumulation that affects the drying efficiency of the sand and gravel aggregate.

Claims

1. A device for detecting water absorption of concrete sand and gravel aggregates, comprising a drying box (1), characterized in that: A weighing frame (11) is rotatably mounted inside the drying box (1), and a fixing frame (2) is detachably mounted on the top of the drying box (1) via bolts; An air extraction pipe (21) is vertically and fixedly installed through the middle of the top of the fixed frame (2); a corrugated hose (22) is fixedly connected to the bottom of the air extraction pipe (21); and a connecting pipe (23) is fixedly connected to the bottom of the corrugated hose (22); The surfaces of both ends of the inner top of the fixed frame (2) are fixedly mounted with mounting frames (24), an electric push rod (25) is fixedly mounted on the inner side of each mounting frame (24), a fixed sleeve (26) is fixedly mounted on the bottom of the transmission shaft of each electric push rod (25), an air intake pipe (27) is fixedly mounted transversely through the inner sides of the two groups of the fixed sleeves (26), and the top of the air intake pipe (27) and the bottom of the connecting pipe (23) are fixedly connected, and the bottom of the air intake pipe (27) is fixedly connected with an air intake pipe (28), and the number of the air intake pipes (28) is several groups; A filter frame (29) is transversely fixedly installed between the bottoms of each fixed sleeve (26), and the filter frame (29) is located below the air inlet pipe (27).

2. A concrete sand and gravel aggregate water absorption detection device according to claim 1, characterized in that: A rotating plate (12) is rotatably mounted on the bottom inner side of the weighing frame (11); a transmission screw (31) is vertically fixedly mounted on the middle end of the top of the rotation plate (12); a connecting screw (33) is sleeved on the top of the transmission screw (31) through a threaded connection, and the number of the connecting screws (33) is several groups.

3. A concrete sand and gravel aggregate water absorption detection device according to claim 2, characterized in that: A fixing block (32) is fixedly mounted on the top surface of each connecting solenoid (33), a connecting screw (34) is fixedly mounted on the top surface of each fixing block (32), and the outer side of the connecting screw is screwed to the inside of the connecting solenoid (33) through a thread, and a stirring plate (35) is fixedly mounted on the outer surface of each fixing block (32), and the stirring plate (35) is located above the rotating plate (12).

4. The device for detecting water absorption of concrete sand and gravel aggregate according to claim 1, characterized in that: A rotating motor (3) is fixedly installed at the middle end of the bottom of the drying box (1), and the top of the transmission shaft of the rotating motor (3) is fixedly connected to the bottom surface of the rotating plate (12) through a coupling.

5. The device for detecting water absorption of concrete sand and gravel aggregate according to claim 2, characterized in that: Sliding blocks (41) are fixedly mounted on both sides of the bottom of the rotating plate (12); a guide groove (4) is provided at the bottom inner side of the weighing frame (11), and the sliding blocks (41) are slidably inserted into the guide groove (4).

6. The device for detecting water absorption of concrete sand and gravel aggregate according to claim 1, characterized in that: An air pump (5) is fixedly installed at the bottom of the air extraction pipe (21).

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