Concrete production device
By rationally heating sand, stone and water and utilizing condensed water, the fluidity problem of steam heating sand and stone is solved, the efficient utilization of steam heat is achieved, and the efficiency and quality of concrete production are improved.
Patent Information
- Application Number
- CN202422077207.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the prior art, directly introducing steam into sand and stone aggregates for heating causes the sand's fluidity to deteriorate and the steam heat is not fully utilized, thereby affecting the accuracy and efficiency of the concrete mixing process.
A concrete production device was designed, which heats sand, stone and water through a jacket and steam conveying pipe system. The condensed water from the indirect heat exchange between steam and sand and stone was rationally utilized as the concrete water source. The heating process was optimized by combining temperature and flow sensors.
It improves the utilization rate of steam, ensures the fluidity of sand and the efficiency of concrete mixing, realizes the full utilization of steam heat, reduces the negative impact of steam on sand fluidity, and improves production efficiency.
Smart Images
Figure CN223314202U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of concrete production equipment, in particular to a concrete production device. Background Art
[0002] Concrete is one of the most important civil engineering materials today. It is an artificial stone material made from a cementitious material (cementitious material), granular aggregate (also known as aggregate), water, and, if necessary, admixtures and additives, mixed in specific proportions, then uniformly mixed, compacted into a dense shape, and cured and hardened. Concrete's abundant raw materials, low price, and simple production process have led to its increasing use. Concrete also boasts high compressive strength, excellent durability, and a wide range of strength grades. These characteristics have led to its widespread use, not only in various civil engineering projects but also in shipbuilding, machinery, marine development, geothermal engineering, and other fields.
[0003] Concrete thermal storage is a common method for winter concrete construction. It utilizes the heat contained in concrete to increase its strength to a predetermined value at normal temperatures. This method utilizes the heat generated by heating raw materials or concrete, as well as the heat of hydration of cement. Covering the concrete structure with insulation prevents rapid loss of this heat, slowing the cooling of the concrete and allowing it to reach its critical freezing strength at normal temperatures. The thermal storage method utilizes the heat from preheating raw materials and the heat of hydration of cement, and covers it with appropriate insulation to slow the cooling of the concrete, ensuring that the concrete hardens at normal temperatures for a period of time. When using the thermal storage method to process concrete for winter use, water heating should be the first consideration due to its high specific heat and the simplicity of water heating. However, if heating water alone is insufficient, sand and stone heating can be considered. This can be achieved by directly heating the sand and stone with steam or indirectly using steam coils. The temperatures for heating the water, sand, and stone are determined by thermal engineering calculations. While the temperature of aggregates such as sand and stone can be increased by directly introducing steam into them, the direct introduction of steam into the aggregates will also increase their moisture content due to the liquefaction of the steam. This is particularly true for fine aggregates, as the fluidity of the aggregate decreases as its moisture content increases. Furthermore, due to their large specific surface area, fine aggregates tend to retain more moisture, which introduces greater uncertainty into the determination of the water delivery rate during the subsequent concrete mixing process. Therefore, prior art has primarily considered utilizing steam sand and stone for indirect heat exchange to achieve heating of the aggregates. However, when processing concrete constructed using the thermal storage method, water heating should also be considered, ensuring that the processed concrete contains a predetermined amount of thermal energy for sufficient use. Moreover, the liquefied water formed by the steam that completes indirect heat exchange with aggregates such as sand and stone does not contain too many impurities, and its use should be fully considered to ensure that the steam carries heat and the material is fully utilized; therefore, in the process of processing concrete constructed by the heat storage method, the existing technology should consider the calorific value of steam and the comprehensive utilization of steam liquefied water in the process of steam heating aggregates such as sand and stone and the water used for mixing, so as to facilitate the determination of the amount of water required for concrete mixing processing while ensuring the fluidity of the aggregates, so as to meet market demand and facilitate promotion and application. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the utility model provides a concrete production device that can use steam to heat sand, stone and water and reasonably utilize the condensed water formed after indirect heat exchange between steam and sand and stone, so as to overcome the defects of the existing technology.
[0005] The technical solution adopted by the utility model is: a concrete production device, including a coarse aggregate storage tank and a fine aggregate storage tank, a mixer is arranged below the coarse aggregate storage tank and the fine aggregate storage tank, a water storage tank is arranged on the mixer, a surplus gas conveying pipe is arranged on the water storage tank, a first jacket is arranged on the outside of the coarse aggregate storage tank, a second jacket is arranged on the outside of the fine aggregate storage tank, the bottom end of the first jacket and the bottom end of the second jacket are both connected to the surplus gas conveying pipe, the surplus gas conveying pipe, the first jacket and the second jacket are connected to the steam conveying main pipe, the surplus gas conveying pipe and the steam conveying main pipe, the first jacket and the steam conveying main pipe, and the second jacket and the steam conveying main pipe are respectively connected through steam conveying branches, a first regulating valve and a pressure sensor are arranged on the steam conveying branch pipe, a first temperature sensor is arranged in the water storage tank, and a stirring device is respectively provided on the coarse aggregate storage tank and the fine aggregate storage tank, the stirring device includes a stirring shaft, a stirring blade arranged on the stirring shaft and a first driving motor connected to the stirring shaft.
[0006] Preferably, it also includes a cement storage tank, and the cement storage tank and the mixer, the coarse aggregate storage tank and the mixer, and the fine aggregate storage tank and the mixer are respectively connected through a solid raw material conveying pipe. The solid raw material conveying pipe is sequentially provided with a first plug-in butterfly valve, a weighing tank, a discharger and a second plug-in butterfly valve along the direction from close to the mixer to away from the mixer, and the discharger is provided with a second drive motor.
[0007] Preferably, a first material level meter is provided in the cement storage tank, and a second material level meter is provided in the cement storage tank above the first material level meter.
[0008] Preferably, the residual gas conveying pipe and the first jacket, as well as the residual gas conveying pipe and the second jacket are respectively connected through a mixed gas conveying pipe, and a one-way valve and a second temperature sensor are sequentially provided on the mixed gas conveying pipe from close to the residual gas conveying pipe to far away from the residual gas conveying pipe, and a steam hole is provided on one end of the residual gas conveying pipe located in the water storage tank.
[0009] Preferably, the water storage tank is provided with an exhaust valve and a liquid level sensor.
[0010] Preferably, the water storage tank and the mixer are connected via a water pipe, and a second regulating valve and a liquid flow sensor are provided on the water pipe.
[0011] Preferably, the inner wall of the coarse aggregate storage tank and the inner wall of the fine aggregate storage tank are both provided with ribs, and the cross section of the ribs adopts a triangular structure.
[0012] The beneficial effects of the utility model are as follows: first, the utility model can utilize steam to heat sand, stone and water, thereby reducing the technical problem of poor sand fluidity caused by excessive attached moisture due to direct introduction of high-pressure steam into the sand, and reasonably utilizes the condensed water formed after indirect heat exchange with sand and stone and introduces it into the water storage tank as one of the water sources for processing concrete, thereby achieving full utilization of the heat carried by steam and the condensate formed after steam liquefaction, improving the utilization rate of steam, and facilitating market promotion.
[0013] Secondly, a first temperature sensor is provided in the water storage tank of the utility model; installation of the first temperature sensor facilitates feedback of temperature parameters.
[0014] Thirdly, the water pipe of the present invention is provided with a second regulating valve and a liquid flow sensor; the installation of the liquid flow sensor facilitates the feedback of the flow parameters of the liquid medium transported through the water pipe.
[0015] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved work efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural diagram of the present utility model.
[0017] Figure 2 for Figure 1 A partially enlarged schematic diagram of detail A.
[0018] Figure 3 for Figure 1 A partially enlarged schematic diagram of detail B.
[0019] Figure 4 for Figure 1 A partially enlarged schematic diagram of detail C. DETAILED DESCRIPTION
[0020] like Figures 1 to 4As shown, a concrete production device includes a coarse aggregate storage tank 1 and a fine aggregate storage tank 2, a mixer 3 is provided below the coarse aggregate storage tank 1 and the fine aggregate storage tank 2, a water storage tank 4 is provided on the mixer 3, a residual gas conveying pipe 5 is provided on the water storage tank 4, a first jacket 6 is provided on the outside of the coarse aggregate storage tank 1, and a second jacket 7 is provided on the outside of the fine aggregate storage tank 2, the bottom end of the first jacket 6 and the bottom end of the second jacket 7 are both connected to the residual gas conveying pipe 5, the residual gas conveying pipe 5, the first jacket 6 and the second jacket 7 are connected to a steam conveying main pipe 8, and the residual gas conveying pipe 5 and the steam delivery main pipe 8, between the first jacket 6 and the steam delivery main pipe 8, and between the second jacket 7 and the steam delivery main pipe 8 are respectively connected through a steam delivery branch pipe 9, a first regulating valve 10 and a pressure sensor 11 are provided on the steam delivery branch pipe 9, a first temperature sensor 12 is provided in the water storage tank 4, and a stirring device is respectively provided on the coarse aggregate storage tank 1 and the fine aggregate storage tank 2, and the stirring device includes a stirring shaft 13, a stirring blade 14 provided on the stirring shaft 13, and a first drive motor 15 transmission-connected to the stirring shaft 13. The residual gas conveying pipe 5 and the first jacket 6, as well as the residual gas conveying pipe 5 and the second jacket 7, are respectively connected through a mixed gas conveying pipe 25. The mixed gas conveying pipe 25 is sequentially provided with a one-way valve 26 and a second temperature sensor 27 along the direction from close to the residual gas conveying pipe 5 to far away from the residual gas conveying pipe 5. A steam through hole 28 is provided on one end of the residual gas conveying pipe 5 located in the water storage tank 4. The number of the steam through holes 28 is several, and the multiple steam through holes 28 are evenly distributed on the end of the residual gas conveying pipe 5 located in the water storage tank 4.
[0021] In addition, this product also includes a cement storage tank 16. The cement storage tank 16 and the mixer 3, the coarse aggregate storage tank 1 and the mixer 3, and the fine aggregate storage tank 2 and the mixer 3 are all connected by solid raw material conveying pipes 17. The solid raw material conveying pipes 17 are sequentially provided with a first gate butterfly valve 18, a weighing tank 19, a discharger 20, and a second gate butterfly valve 21 from the direction close to the mixer 3 to the direction away from the mixer 3. The discharger 20 is provided with a second drive motor 22. This facilitates the weighing of the raw materials conveyed through the corresponding solid raw material conveying pipes 17 and the delivery of the weighed raw materials to the mixer 3.
[0022] A first level meter 23 is provided in the cement storage tank 16, and the installation of the first level meter 23 is convenient for feedback of the minimum level height of the cement storage tank 16; a second level meter 24 is provided in the cement storage tank 16 above the first level meter 23; the installation of the second level meter 24 is convenient for feedback of the maximum level height of the cement storage tank 16.
[0023] The water tank 4 is provided with an exhaust valve 29 and a liquid level sensor 30. The installation of the liquid level sensor 30 facilitates feedback of the liquid level height in the water tank 4. The water tank 4 and the mixer 3 are connected by a water pipe 31, and the water pipe 31 is provided with a second regulating valve 32 and a liquid flow sensor 33.
[0024] The inner wall of the coarse aggregate storage tank 1 and the inner wall of the fine aggregate storage tank 2 are respectively provided with ribs 34, and the cross-section of the ribs 34 adopts a triangular structure; the installation of the ribs 34 is convenient for guiding the passing medium, so that the medium moves toward the side away from the ribs 34; the number of ribs 34 installed in the coarse aggregate storage tank 1 and the number of ribs 34 installed on the inner wall of the fine aggregate storage tank 2 are both several, and the several ribs 34 installed in the coarse aggregate storage tank 1 are evenly distributed on the outside of the central axis of the coarse aggregate storage tank 1; the ribs 34 installed on the inner wall of the fine aggregate storage tank 2 are evenly distributed on the outside of the central axis of the fine aggregate storage tank 2.
[0025] The method of using this product is as follows: Figures 1 to 4 As shown, the following steps are included:
[0026] S1, after the coarse aggregate storage tank 1 is loaded with a preset mass of stone particles as coarse aggregate for concrete, the fine aggregate storage tank 2 is loaded with a preset mass of sand and soil as coarse aggregate for concrete, the cement storage tank 16 is loaded with a preset volume of cement, and the water storage tank 4 is loaded with a preset volume of municipal water, high-pressure steam is introduced into the first jacket 6 and the second jacket 7 respectively, and at the same time, the stirring device on the coarse aggregate storage tank 1 and the stirring device on the fine aggregate storage tank 2 are turned on. At this time, the stone particles in the coarse aggregate storage tank 1 in a stirring state and the high-pressure steam continuously introduced into the first jacket 6 are heat exchanged, and the stone particles in the fine aggregate storage tank 2 in a stirring state are heat exchanged. The sand in the stirring state and the high-pressure steam continuously introduced into the second jacket 7 are heat exchanged, and the medium discharged from the outlet end of the first jacket 6 and the outlet end of the second jacket 7 are both gas-liquid mixtures, and the gas-liquid mixture includes a large amount of liquefied water and unliquefied steam; the gas-liquid mixture is transported to the residual gas transmission pipe 5, and the liquefied water is merged into the municipal water supply stored in the water storage tank 4, while the unliquefied steam is directly heat exchanged with the municipal water supply stored in the water storage tank 4 and is fully liquefied, and the non-condensable gas in the gas-liquid mixture is continuously discharged to the outside through the exhaust valve 29.
[0027] S2. When the parameters fed back by the second temperature sensor 27 installed on the mixed gas delivery pipe 25 connected to the first jacket 6 and the second temperature sensor 27 installed on the mixed gas delivery pipe 25 connected to the second jacket 7 reach the preset range, stop supplying high-pressure steam to the first jacket 6 and the second jacket 7, and use the corresponding steam delivery branch pipe 9 on the residual gas delivery pipe 5 to supply steam to the municipal water stored in the water storage tank 4 according to the parameters fed back by the first temperature sensor 12. The steam entering the water storage tank 4 and the municipal water stored in the water storage tank 4 are directly heat exchanged. When the parameters fed back by the first temperature sensor 12 reach the preset range, stop supplying high-pressure steam to the municipal water stored in the water storage tank 4.
[0028] S3. The heated stone particles stored in the coarse aggregate storage tank 1, the heated sand and soil stored in the fine aggregate storage tank 2, and the cement stored in the cement storage tank 16 are first transported to the mixer 3 through the corresponding solid raw material conveying pipes 17. During this period, the heated stone particles, the heated sand and soil, and the cement are all measured to a preset weight by the corresponding weighing tanks 19 before being transported to the mixer 3. After the mixer 3 receives the heated stone particles, the heated sand and soil, and the cement, the mixer 3 first stirs the heated stone particles, the heated sand and soil, and the cement to form a uniform solid mixture. Then, the second regulating valve 32 is opened to uniformly convey the heated municipal water supply to the solid mixture in the stirring state until the cumulative flow rate fed back by the liquid flow sensor 33 reaches a preset range. Finally, the solid mixture and the heated municipal water supply are kept stirred, and other auxiliary materials required for concrete production are added to the mixer 3 until the preset stirring time, forming the processed concrete, which is then discharged from the mixer 3 and transported to a preset location by staff.
[0029] Through this embodiment, steam can be used to heat sand, stone and water, thereby reducing the technical problem of poor sand fluidity caused by excessive attached moisture due to direct introduction of high-pressure steam into the sand, and rationally utilizing the condensed water formed after indirect heat exchange with sand and stone to pass into the water storage tank 4 as one of the water sources for processing concrete, thereby achieving full utilization of the heat carried by steam and the condensate formed after steam liquefaction, improving the utilization rate of steam, and facilitating market promotion.
[0030] The embodiments described above are only preferred embodiments of the present invention and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles described in the patent scope of the present invention should be included in the scope of the patent application of the present invention.
Claims
1. A concrete production device, characterized in that: The invention comprises a coarse aggregate storage tank (1) and a fine aggregate storage tank (2), wherein a mixer (3) is provided below the coarse aggregate storage tank (1) and the fine aggregate storage tank (2), a water storage tank (4) is provided on the mixer (3), a residual gas conveying pipe (5) is provided on the water storage tank (4), a first jacket (6) is provided on the outside of the coarse aggregate storage tank (1), a second jacket (7) is provided on the outside of the fine aggregate storage tank (2), the bottom end of the first jacket (6) and the bottom end of the second jacket (7) are both connected to the residual gas conveying pipe (5), the residual gas conveying pipe (5), the first jacket (6) and the second jacket (7) are connected to a steam conveying main pipe (8), and the residual gas conveying pipe (5) and the steam conveying main pipe (8) are connected. The transport main pipe (8), the first jacket (6) and the steam transport main pipe (8), and the second jacket (7) and the steam transport main pipe (8) are respectively connected through a steam transport branch pipe (9). A first regulating valve (10) and a pressure sensor (11) are provided on the steam transport branch pipe (9). A first temperature sensor (12) is provided in the water storage tank (4). A stirring device is respectively provided on the coarse aggregate storage tank (1) and the fine aggregate storage tank (2). The stirring device includes a stirring shaft (13), a stirring blade (14) provided on the stirring shaft (13), and a first drive motor (15) connected to the stirring shaft (13).
2. The concrete production device according to claim 1, characterized in that: The invention also includes a cement storage tank (16). The cement storage tank (16) and the mixer (3), the coarse aggregate storage tank (1) and the mixer (3), and the fine aggregate storage tank (2) and the mixer (3) are respectively connected through a solid raw material conveying pipe (17). The solid raw material conveying pipe (17) is provided with a first plug-in butterfly valve (18), a weighing tank (19), a discharger (20), and a second plug-in butterfly valve (21) in sequence from close to the mixer (3) to far away from the mixer (3). The discharger (20) is provided with a second drive motor (22).
3. The concrete production device according to claim 1, characterized in that: A first material level meter (23) is provided in the cement storage tank (16), and a second material level meter (24) is provided in the cement storage tank (16) above the first material level meter (23).
4. The concrete production device according to claim 1, characterized in that: The residual gas delivery pipe (5) and the first jacket (6), as well as the residual gas delivery pipe (5) and the second jacket (7), are respectively connected via a mixed gas delivery pipe (25). A one-way valve (26) and a second temperature sensor (27) are sequentially provided on the mixed gas delivery pipe (25) from close to the residual gas delivery pipe (5) to far away from the residual gas delivery pipe (5). A steam through hole (28) is provided on one end of the residual gas delivery pipe (5) located in the water storage tank (4).
5. The concrete production device according to claim 1, characterized in that: The water storage tank (4) is provided with an exhaust valve (29) and a liquid level sensor (30).
6. The concrete production device according to claim 1, characterized in that: The water storage tank (4) and the mixer (3) are connected via a water pipe (31), and a second regulating valve (32) and a liquid flow sensor (33) are provided on the water pipe (31).
7. The concrete production device according to claim 1, characterized in that: Ridges (34) are respectively provided on the inner wall of the coarse aggregate storage tank (1) and the inner wall of the fine aggregate storage tank (2), and the cross section of the ribs (34) adopts a triangular structure.