Auxiliary feeding device for concrete mixing plant

Abstract

The present invention discloses an auxiliary feeding device for a concrete mixing station, comprising a bracket, an additive metering hopper is arranged on the top of the bracket, the water metering hopper is arranged at the center of the bracket in the horizontal direction, the additive metering hopper is arranged at the corner position of the top of the bracket, the additive metering hopper comprises a barrel, a water inlet, a water outlet and an electric butterfly valve, the water inlet is arranged on the top of the barrel, the water outlet is arranged at the bottom of the barrel, the electric butterfly valve is arranged at the water inlet and the water outlet respectively, and the barrel is connected to an air pipe, and the air pipe is connected to a negative pressure air source. The negative pressure air source transmits the negative pressure to the barrel through the air pipe, so that the barrel forms a negative pressure, and reduces the leakage of the liquid from the electric butterfly valve position. Compared with the prior art, there is no need to add a mobile receiving hopper at the water outlet position, and there is no need to put the liquid back, so as to avoid affecting the quality of the additive, and it is convenient to use.

Description

Technical Field

[0001] The invention relates to the field of concrete mixing stations, and in particular to an auxiliary feeding device used in concrete mixing stations. Background Art

[0002] Concrete mixing station is mainly composed of five systems including mixing host, material weighing system, material conveying system, material storage system and control system and other ancillary facilities. Compared with the aggregate measurement of the station, the aggregate measurement of the floor reduces four intermediate links, and the material measurement is vertical, which saves the measurement time and greatly improves the production efficiency.

[0003] Concrete mixing station is a building material manufacturing equipment composed of five major components: mixing host, material weighing system, material conveying system, material storage system, control system and other ancillary facilities. Its main working principle is to use cement as a binder, mix and stir sand, lime, coal slag and other raw materials, and finally make concrete, which is put into construction and production as a wall material. Since it was put into use, the concrete mixing station has always played an important role in my country's construction and building materials industry. Of course, this is also determined by the superior characteristics of the concrete mixing station itself; the concrete mixing station has good mixing performance. The equipment adopts a spiral double-horizontal shaft forced mixing host, which not only has strong mixing performance, but also can achieve good mixing effects for dry hardness, plasticity and various proportions of concrete.

[0004] In the prior art, an invention patent with authorization announcement number "CN201357514Y" discloses a concrete mixing station admixture safety device, which prevents liquid leakage when the admixture is not in use. However, the liquid in the mobile receiving hopper needs to be put back into the admixture, affecting the quality of the admixture. Summary of the invention

[0005] The object of the present invention is to provide an auxiliary feeding device for a concrete mixing station.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: an auxiliary feeding device for a concrete mixing station, comprising a bracket, a water metering hopper is arranged at the bottom of the bracket, and an additive metering hopper is arranged at the top of the bracket. The water metering hopper is arranged at the center of the bracket in the horizontal direction, and the additive metering hopper is arranged at the corner position of the top of the bracket. The additive metering hopper includes a barrel, a water inlet, a water outlet and an electric butterfly valve. The water inlet is arranged at the top of the barrel, the water outlet is arranged at the bottom of the barrel, the electric butterfly valve is respectively arranged at the water inlet and the water outlet, and the barrel is connected to an air pipe, and the air pipe is connected to a negative pressure air source.

[0007] Preferably, the negative pressure air source is a negative pressure air pump, the negative pressure air pump is arranged on the top of the bracket, and the negative pressure air pump is connected to the air pipe.

[0008] By adopting the above technical solution, there is no need to arrange the air pipe over a long distance, and the negative pressure in the additive metering bucket can be ensured by the negative pressure air pump.

[0009] Preferably, a fixing piece is provided at the center of the water measuring hopper, a lifting ring is provided at the center of the bracket, and a weighing sensor is provided between the fixing piece and the lifting ring.

[0010] The technical solution is adopted to measure the amount of water discharged from the water metering bucket each time.

[0011] Preferably, the bracket includes columns, connecting cross bars are connected between the tops of adjacent columns, connecting rods are arranged between the connecting cross bars, and both ends of the connecting rods in the length direction are respectively connected to the middle of the connecting cross bars.

[0012] By adopting the above technical solution, the water metering hopper and the admixture metering hopper are supported.

[0013] Preferably, the lifting ring is arranged at the overlapping position of the two connecting rods.

[0014] By adopting the above technical solution, the connection and support effects are enhanced.

[0015] Preferably, the negative pressure air pump is arranged on the connecting rod.

[0016] By adopting the above technical solution, the connecting rod has a supporting effect on the negative pressure air pump.

[0017] Preferably, a fixing ring is provided on the side wall of the barrel, the barrel is located at the center of the fixing ring, the side wall of the fixing ring extends outward in a horizontal direction to form a fixing seat, and the fixing seat is respectively connected to the supporting cross bar and the connecting rod.

[0018] By adopting the above technical solution, the additive metering hopper is fixed to the bracket through the fixing ring, and has a strong supporting effect.

[0019] Preferably, the fixing seat comprises a support plate and a reinforcing rib, one side of the reinforcing rib is connected to the side surface of the support plate, and the other end of the reinforcing rib is connected to the fixing ring.

[0020] By adopting the above technical solution, the structural strength is enhanced.

[0021] Preferably, the material barrel includes a barrel body and a cover plate, and a threaded joint is provided at the end of the air pipe, one end of the threaded joint is threadedly connected to the cover plate, and the other end of the threaded joint is connected to the air pipe, and the threaded joint connects the air pipe with the barrel body, and the upper surface of the cover plate is recessed downward to form a first sealing groove, and the first sealing groove is arranged around the threaded joint, and a first sealing ring is arranged in the first sealing groove.

[0022] By adopting the above technical solution, the air pipe is connected to the cover plate, thereby ensuring the sealing effect of the connection position between the air pipe and the cover plate.

[0023] Preferably, the lower surface of the cover plate extends downward to form a connecting ring, the connecting ring is arranged concentrically with the cover plate, and a second sealing ring is arranged between the connecting ring and the inner side surface of the barrel body.

[0024] By adopting the above technical solution, the sealing effect between the cover plate and the barrel body is guaranteed.

[0025] To summarize, when admixtures are needed, the water outlet is opened by opening the electric butterfly valve at the water outlet, and the admixture enters the water metering hopper through the water outlet. When the admixture increases and the addition needs to be stopped, the electric butterfly valve at the water outlet is closed to close the water outlet, forming a closed space in the barrel. At the same time, the negative pressure air source transmits the negative pressure to the barrel through the air pipe, so that negative pressure is formed in the barrel, reducing the leakage of liquid from the electric butterfly valve position. Compared with the prior art, there is no need to add a mobile receiving hopper at the water outlet position, and there is no need to put the liquid back, so as to avoid affecting the quality of the admixture, and it is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment;

[0027] Figure 2 is a cross-sectional schematic diagram of the embodiment at the cover plate position;

[0028] Figure 3 is a top view of a bracket of an embodiment;

[0029] In the figure, 1. bracket; 11. electric butterfly valve; 12. column; 13. connecting cross bar; 14. connecting rod; 2. water metering bucket; 21. fixing piece; 22. lifting ring; 23. weighing sensor; 3. additive metering bucket; 31. barrel; 32. water inlet; 33. water outlet; 34. fixing ring; 35. support plate; 36. reinforcing rib; 37. cover plate; 38. connecting ring; 39. second sealing ring; 41. air pipe; 42. negative pressure air pump; 43. threaded joint; 44. first sealing groove; 45. first sealing ring. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0032] Example:

[0033] like Figure 1 As shown, an auxiliary feeding device for a concrete mixing station includes a bracket 1, as shown in Figure 3 As shown, the bracket 1 includes columns 12, four columns 12 are provided, a connecting cross bar 13 is connected between the tops of adjacent columns 12, a connecting rod 14 is provided between the connecting cross bars 13, the connecting cross bars 13 and the connecting rods 14 are fixed by welding, and the two ends of the connecting rod 14 in the length direction are respectively connected to the middle of the connecting cross bar 13, a water metering bucket 2 is provided at the bottom of the bracket 1, the water metering bucket 2 is arranged at the center of the bracket 1 in the horizontal direction, a fixing piece 21 is provided at the center of the water metering bucket 2, and the fixing piece 21 is welded, a lifting ring 22 is provided at the center of the bracket 1, and the lifting ring 22 is arranged at the overlapping position of two connecting rods 14, a weighing sensor 23 is provided between the fixing piece 21 and the lifting ring 22, one end of the weighing sensor 23 is fixed to the lifting ring 22, and the other end of the weighing sensor 23 is connected to the fixing piece 21, so as to measure the weight in the water metering bucket 2.

[0034] like Figure 1 As shown, an additive metering hopper 3 is provided on the top of the bracket 1, and the additive metering hopper 3 is arranged at the corner position of the top of the bracket 1. The additive metering hopper 3 includes a material barrel, a water inlet 32, a water outlet 33 and an electric butterfly valve 11. A fixing ring 34 is provided on the side wall of the material barrel. The material barrel is located at the center of the fixing ring 34. The side wall of the fixing ring 34 extends outward in the horizontal direction to form a fixing seat. The fixing seat is respectively connected to the supporting cross bar and the connecting rod 14. The fixing seat includes a supporting plate 35 and a reinforcing rib 36. One side of the reinforcing rib 36 is welded and fixed to the side of the support plate 35, and the other end of the reinforcing rib 36 is welded and fixed to the fixing ring 34.

[0035] like Figure 1 As shown, the water inlet 32 ​​is arranged at the top of the barrel, the water outlet 33 is arranged at the bottom of the barrel, the electric butterfly valve 11 is arranged at the water inlet 32 ​​and the water outlet 33 respectively, and the air pipe 41 connected to the barrel is as shown in FIG. Figure 2As shown, the air pipe 41 is connected to a negative pressure air source, which can be an axial flow fan or a negative pressure air pump 42, etc. In this embodiment, the negative pressure air source is a negative pressure air pump 42, which plays a role in extracting the air in the barrel to the outside to maintain the negative pressure in the barrel. The negative pressure air pump 42 is arranged on the connecting rod 14 at the top of the bracket 1, and the negative pressure air pump 42 is connected to the air pipe 41. The barrel includes a barrel body 31 and a cover plate 37. A threaded joint 43 is arranged at the end of the air pipe 41, one end of the threaded joint 43 is threadedly connected to the cover plate 37, and the other end of the threaded joint 43 is connected to the air pipe 4 1 connection, the threaded joint 43 connects the air pipe 41 with the barrel body 31, the upper surface of the cover plate 37 is recessed downward to form a first sealing groove 44, the first sealing groove 44 is arranged around the threaded joint 43, a first sealing ring 45 is arranged in the first sealing groove 44, the lower surface of the cover plate 37 extends downward to form a connecting ring 38, the connecting ring 38 is arranged concentrically with the cover plate 37, a second sealing ring 39 is arranged between the connecting ring 38 and the inner side surface of the barrel body 31, the first sealing ring 45 and the second sealing ring 39 are made of rubber material to improve the sealing effect of the barrel.

[0036] Working principle:

[0037] When it is necessary to add additives to the barrel, close the electric butterfly valve 11 at the water outlet 33, open the electric butterfly valve 11 at the water inlet 32, and turn on the negative pressure air pump 42 at the same time to add additives to the barrel through the water inlet 32. When additives are needed, open the electric butterfly valve 11 at the water outlet 33 to open the water outlet 33, and the additives enter the water metering hopper 2 through the water outlet 33. When the additives are added and the addition needs to be stopped, close the electric butterfly valve 11 at the water outlet 33 to close the water outlet 33, forming a closed space in the barrel. At the same time, the negative pressure air source transmits the negative pressure to the barrel through the air pipe 41, so that negative pressure is formed in the barrel, reducing the leakage of liquid from the electric butterfly valve 11.

Claims

1. An auxiliary feeding device for a concrete mixing plant, comprising a bracket (1), characterized in that: A water metering hopper (2) is arranged at the bottom of the support (1), and an additive metering hopper (3) is arranged at the top of the support (1). The water metering hopper (2) is arranged at the center of the support (1) in the horizontal direction, and the additive metering hopper (3) is arranged at a corner position on the top of the support (1). The additive metering hopper (3) comprises a material barrel, a water inlet (32), a water outlet (33) and an electric butterfly valve (11). The water inlet (32) is arranged at the top of the material barrel, and the water outlet (33) is arranged at the bottom of the material barrel. The electric butterfly valve (11) is respectively arranged at the positions of the water inlet (32) and the water outlet (33). The material barrel is connected to an air pipe (41), and the air pipe (41) is connected to a negative pressure air source. The negative pressure air source is a negative pressure air pump (42), which is arranged at the top of the bracket (1), and the negative pressure air pump (42) is connected to the air pipe (41). A fixing piece (21) is arranged at the center of the water metering bucket (2), and a hanging ring (22) is arranged at the center of the bracket (1). A weighing sensor (23) is arranged between the fixing piece (21) and the hanging ring (22). The bracket (1) comprises a column (12), and a connecting cross bar (13) is connected between the tops of adjacent columns (12). A connecting rod (14) is arranged between the connecting cross bars (13), and the two ends of the connecting rod (14) in the length direction are respectively connected to the middle part of the connecting cross bar (13). The hanging ring (22) is provided with a connecting rod (14). The negative pressure air pump (42) is arranged at the overlapping position of the two connecting rods (14), the negative pressure air pump (42) is arranged on the connecting rod (14), the side wall of the barrel is provided with a fixing ring (34), the barrel is located at the center of the fixing ring (34), the side wall of the fixing ring (34) extends outward in the horizontal direction to form a fixing seat, the fixing seat is respectively connected to the supporting cross bar and the connecting rod (14), the fixing seat comprises a supporting plate (35) and a reinforcing rib (36), one side of the reinforcing rib (36) is connected to the side of the supporting plate (35), and the other end of the reinforcing rib (36) is connected to the fixing ring (34), the barrel comprises a barrel body (31) and a cover plate (37), and the end of the air pipe (41) is provided with a threaded joint (43), one end of the threaded joint (43) is threadedly connected to the cover plate (37), and the other end of the threaded joint (43) is connected to the air pipe (41). The threaded joint (43) enables the air pipe (41) to communicate with the barrel body (31). The upper surface of the cover plate (37) is recessed downward to form a first sealing groove (44). The first sealing groove (44) is arranged around the threaded joint (43). A first sealing ring (45) is arranged in the first sealing groove (44). The lower surface of the cover plate (37) extends downward to form a connecting ring (38). The connecting ring (38) is concentrically arranged with the cover plate (37). A second sealing ring (39) is arranged between the connecting ring (38) and the inner side surface of the barrel body (31).

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