Integrated dust removal device for concrete mixing plant

Abstract

The application provides an integrated dust removal device of a concrete mixing station, and belongs to the technical field of dust removal of mixing stations. The integrated dust removal device of the concrete mixing station comprises a box body, characterized in that: a first dust removal cavity and a second dust removal cavity are arranged in the box body, the first dust removal cavity is communicated with the second dust removal cavity, an air inlet pipe is communicated with one side of the box body, a spraying assembly is arranged in the first dust removal cavity, an air suction assembly is arranged in the second dust removal cavity, a rotating assembly is arranged on one side of the box body, the rotating assembly is rotationally connected with the air suction assembly, and an air exhaust assembly is communicated with the top of the box body. In the application, the integrated dust removal device of the concrete mixing station is convenient for twice dust removal, and the dust removal effect is improved.

Description

Technical Field

[0001] This application relates to the field of dust removal in concrete mixing plants, and more specifically, to an integrated dust removal device for concrete mixing plants. Background Technology

[0002] A concrete mixing plant, also known as a precast concrete plant, is a mechanical equipment that uses machines to replace manual labor to mix materials such as cement, sand, gravel, and water in a certain proportion to produce concrete needed for construction projects and other operations, and then pumps it out. It is a combined unit used for centralized mixing of concrete.

[0003] In the concrete production process, concrete raw materials need to be added to a mixing tank. After the concrete raw materials are mixed, concrete is obtained. However, dust is inevitably generated during the mixing process. If the dust is directly emitted into the air, it will cause environmental pollution.

[0004] Chinese patent application CN202420190720.8 discloses a dust removal device for a concrete mixing plant, comprising a housing, an exhaust fan, and a spray assembly. The housing is equipped with an inlet pipe and an outlet pipe. The inlet pipe is connected to the mixing tank, and the outlet pipe is connected to the suction port of the exhaust fan. The spray assembly includes a water tank, a water pump, and spray pipes. The water tank is located on the housing, and the spray pipes are located inside the housing. Multiple atomizing nozzles are connected to the spray pipes and are spaced apart. The water pump is connected between the water tank and the spray pipes. This application effectively reduces dust emissions during the mixing process.

[0005] The above solution also has the following shortcomings: During use, as the spraying components spray water into the box to remove dust, the water level inside the box gradually rises, which gradually reduces the effective space for dust diffusion in the upper part of the box. This directly shortens the time for dust to come into contact with and collide with the water mist and to settle naturally, causing some dust to be carried away by the airflow before it can be absorbed or settled by the water mist, thus reducing the dust removal effect. Utility Model Content

[0006] To overcome the above deficiencies, this application provides an integrated dust removal device for a concrete mixing plant, which aims to improve the problem that the water level inside the tank gradually rises, causing the effective space for dust diffusion in the upper part of the tank to gradually decrease. This directly shortens the time for dust to come into contact with water mist and to settle naturally, resulting in some dust being carried away by the airflow before it can be absorbed or settled by the water mist, thus reducing the dust removal effect.

[0007] This application provides an integrated dust removal device for a concrete mixing plant, comprising a housing, characterized in that: a first dust removal chamber and a second dust removal chamber are provided inside the housing, the first dust removal chamber and the second dust removal chamber are connected, an air inlet pipe is connected to one side of the housing, a spray assembly is provided in the first dust removal chamber, an air suction assembly is provided in the second dust removal chamber, a rotating assembly is provided on one side of the housing, the rotating assembly is rotatably connected to the air suction assembly, and an exhaust assembly is connected to the top of the housing.

[0008] In one specific implementation, the spray assembly includes a filter frame fixedly connected to the inner wall of the housing, a water suction pipe connected to one side of the housing, the filter frame covering one end of the water suction pipe, a water pump installed on the outer wall of the housing, the water suction pipe connected to the water pump inlet, a water pump outlet connected to the water pump outlet, the water outlet fixedly connected to the housing, and a plurality of atomizing nozzles evenly connected to one side of the water outlet.

[0009] In the above process, the water entering the suction pipe can be filtered by the filter frame to prevent impurities in the water from damaging the water pump and to prevent clogging of the atomizing nozzle. The water pump draws water out of the tank and delivers it to the atomizing nozzle through the outlet pipe. The atomized water can fully contact the dust-laden gas in the first dust removal chamber, increasing the contact area between water and dust, improving the dust adsorption efficiency, enhancing the initial dust removal effect, and realizing the recycling of water and saving water resources.

[0010] In one specific implementation, the air intake assembly includes a first filter screen fixedly connected to the inner wall of the box, a connecting pipe fixedly connected inside the box, the first filter screen covering one end of the connecting pipe, a centrifugal exhaust fan connected to one end of the connecting pipe, the centrifugal exhaust fan being installed inside the box, and an exhaust pipe connected to the air outlet of the centrifugal exhaust fan.

[0011] In the above process, the first filter screen can perform preliminary filtration of the gas entering the connecting pipe, preventing larger particles of impurities from entering the centrifugal induced draft fan, which is convenient for protecting the induced draft fan and extending its service life. The centrifugal induced draft fan draws the dust-laden gas into the box through the exhaust pipe. Since one end of the exhaust pipe is lower than the water level in the box, the dissolving and adsorption effects of water can be used to remove residual fine dust again, thus improving the dust removal effect.

[0012] In one specific implementation, the rotating assembly includes a motor mounted on the top of the housing, a rotating shaft fixedly connected to the output end of the motor, the rotating shaft being rotatably connected to the housing and the air outlet pipe respectively, a rotating block fixedly connected to one end of the rotating shaft, two oblique holes being formed through the rotating block, two rotating rods being fixedly connected to the outer ring of the rotating block, a sealed bearing being embedded in one end of the air outlet pipe, and the rotating block being interference-fitted with the inner ring of the sealed bearing.

[0013] In the above process, the motor drives the rotating shaft and rotating block to rotate. The oblique hole on the rotating block can rotate to release air, expand the contact area between the gas and water, and make the gas and water contact more completely. At the same time, the rotating rod can break the air bubbles during rotation, avoiding the reduction in dust removal efficiency caused by air bubble blockage, and avoiding affecting the dust removal effect.

[0014] In one specific implementation, the exhaust assembly includes an exhaust frame communicating with the top of the housing, and a second filter screen is fixedly connected inside the exhaust frame.

[0015] In the above process, the gas after dust removal is discharged through the exhaust frame, and the second filter screen facilitates further filtration of the gas, intercepting residual fine dust and further improving the purification effect of the dust removal device.

[0016] In one specific implementation, a drain pipe is connected to the bottom of the box, and a valve is installed on the drain pipe.

[0017] In the above process, the valve facilitates the opening and closing of the drain pipe, which can easily discharge the sediment and impurities in the tank.

[0018] In one specific implementation, the bottom of the box is set to be conical.

[0019] In the above implementation process, by setting the bottom of the box to a cone shape, it is easy to collect impurities and facilitate unified sewage discharge.

[0020] Compared with the prior art, the beneficial effects of this application are as follows: A negative pressure is generated by the suction component, drawing dust-laden gas into the first dust removal chamber through the inlet pipe. The spray component atomizes water flow, entraining large dust particles in the gas for initial dust removal. The gas after initial dust removal is then drawn into the second dust removal chamber through the suction component. Since one end of the suction component is lower than the water level inside the chamber, the dissolving and adsorption properties of water are used to further remove residual fine dust. Simultaneously, the rotating component allows for convenient rotation of the exhaust air, increasing the contact area between the gas and water, ensuring more complete contact, and facilitating the breaking of air bubbles. This avoids the reduction in dust removal efficiency caused by bubble blockage, thus achieving two-stage dust removal and improving the overall dust removal effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of an integrated dust removal device for a concrete mixing plant provided in the embodiments of this application;

[0023] Figure 2 A cross-sectional structural schematic diagram of an integrated dust removal device for a concrete mixing plant provided for the embodiments of this application;

[0024] Figure 3 for Figure 2 Enlarged view of point A;

[0025] Figure 4 for Figure 2 Enlarged view of point B;

[0026] Figure 5 for Figure 2 Enlarged view of point C;

[0027] Figure 6 A cross-sectional structural diagram illustrating the connection relationship between the intake assembly and the rotating assembly provided in an embodiment of this application;

[0028] Figure 7 for Figure 6 Enlarged view of point D;

[0029] Figure 8 This is a schematic cross-sectional view of the rotating component provided in an embodiment of this application.

[0030] In the diagram: 1. Housing; 2. First dust removal chamber; 3. Second dust removal chamber; 4. Air inlet pipe; 5. Spray assembly; 51. Filter frame; 52. Water suction pipe; 53. Water pump; 54. Water outlet pipe; 55. Atomizing nozzle; 6. Air suction assembly; 61. First filter screen; 62. Connecting pipe; 63. Centrifugal induced draft fan; 64. Air outlet pipe; 65. Sealed bearing; 7. Rotating assembly; 71. Motor; 72. Rotating shaft; 73. Rotating block; 74. Inclined hole; 75. Rotating rod; 8. Exhaust assembly; 81. Exhaust frame; 82. Second filter screen; 9. Sewage pipe; 10. Valve. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0032] Please see Figure 1 This application provides an integrated dust removal device for a concrete mixing plant, comprising a housing 1, characterized in that: a first dust removal chamber 2 and a second dust removal chamber 3 are provided inside the housing 1, the first dust removal chamber 2 and the second dust removal chamber 3 are connected, an air inlet pipe 4 is connected to one side of the housing 1, a spray assembly 5 is provided in the first dust removal chamber 2, an air suction assembly 6 is provided in the second dust removal chamber 3, a rotating assembly 7 is provided on one side of the housing 1, the rotating assembly 7 is rotatably connected to the air suction assembly 6, an exhaust assembly 8 is connected to the top of the housing 1, and one end of the air inlet pipe 4 is connected to the external mixing tank.

[0033] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The spray assembly 5 includes a filter frame 51 fixedly connected to the inner wall of the housing 1. A water suction pipe 52 is connected to one side of the housing 1. The filter frame 51 covers one end of the water suction pipe 52. A water pump 53 is installed on the outer wall of the housing 1. The water suction pipe 52 is connected to the inlet of the water pump 53. The outlet of the water pump 53 is connected to the outlet pipe 54. The outlet pipe 54 is fixedly connected to the housing 1. Several atomizing nozzles 55 are evenly connected to one side of the outlet pipe 54. The filter frame 51 filters the water entering the water suction pipe 52, preventing impurities in the water from damaging the water pump 53 and preventing blockage of the atomizing nozzles 55. The water pump 53 draws water from the housing 1 and delivers it to the atomizing nozzles 55 through the outlet pipe 54. The atomized water can fully contact the dust-laden gas in the first dust removal chamber 2, increasing the contact area between water and dust, improving the dust adsorption efficiency, enhancing the initial dust removal effect, and realizing water recycling, thus saving water resources.

[0034] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 The suction assembly 6 includes a first filter screen 61 fixedly connected to the inner wall of the housing 1. A connecting pipe 62 is fixedly connected inside the housing 1. The first filter screen 61 covers one end of the connecting pipe 62. One end of the connecting pipe 62 is connected to a centrifugal induced draft fan 63. The centrifugal induced draft fan 63 is installed inside the housing 1. The outlet of the centrifugal induced draft fan 63 is connected to an exhaust pipe 64. During dust removal, the housing 1 is pre-filled with water so that the water level is higher than the end of the exhaust pipe 64. The first filter screen 61 can filter the air entering the connecting pipe. The gas at 62 undergoes preliminary filtration to prevent larger particles from entering the centrifugal induced draft fan 63, thus protecting the fan and extending its service life. The dust-laden gas is drawn into the housing 1 through the outlet pipe 64 by the centrifugal induced draft fan 63. Since one end of the outlet pipe 64 is lower than the water level in the housing 1, the dissolving and adsorption properties of water are used to further remove residual fine dust, improving the dust removal effect. Both the water pump 53 and the centrifugal induced draft fan 63 are electrically connected to an external controller.

[0035] In the specific configuration, the rotating assembly 7 includes a motor 71 installed on the top of the housing 1. The output end of the motor 71 is fixedly connected to a rotating shaft 72. The rotating shaft 72 is rotatably connected to the housing 1 and the air outlet pipe 64. One end of the rotating shaft 72 is fixedly connected to a rotating block 73. Two oblique holes 74 are opened through the rotating block 73. Two rotating rods 75 are fixedly connected to the outer ring of the rotating block 73. One end of the air outlet pipe 64 is fitted with a sealed bearing 65. The rotating block 73 and the inner ring of the sealed bearing 65 are interference-fitted. The motor 71 drives the rotating shaft 72 and the rotating block 73 to rotate. The oblique holes 74 on the rotating block 73 can rotate to release air, expanding the contact area between the gas and water, making the contact between the gas and water more complete. At the same time, the rotating rods 75 can break up air bubbles during rotation, avoiding the reduction in dust removal efficiency caused by air bubble blockage, and avoiding affecting the dust removal effect.

[0036] In a specific configuration, the exhaust assembly 8 includes an exhaust frame 81 connected to the top of the housing 1. A second filter 82 is fixedly connected inside the exhaust frame 81. The dust-removed gas is discharged through the exhaust frame 81, and the second filter 82 facilitates further filtration of the gas, intercepting residual fine dust and further improving the purification effect of the dust removal device.

[0037] In the specific setup, the bottom of the box 1 is connected to a drain pipe 9, and a valve 10 is installed on the drain pipe 9. The valve 10 can easily control the opening and closing of the drain pipe 9, and can easily discharge the sediment and impurities inside the box 1.

[0038] In the specific setup, the bottom of the box 1 is set to be conical. By setting the bottom of the box 1 to be conical, it is easy to collect impurities and facilitate unified sewage discharge.

[0039] The working principle of this integrated dust removal device for a concrete mixing plant is as follows: When using the integrated dust removal device, the centrifugal induced draft fan 63 is activated by an external controller to generate negative pressure, drawing dust-laden gas from the external mixing tank into the first dust removal chamber 2 through the air inlet pipe 4. The water pump 53 is activated by the external controller to draw water from the housing 1 through the water suction pipe 52. At this time, the filter frame 51 filters the water entering the water suction pipe 52, preventing impurities from damaging the water pump 53 or clogging the atomizing nozzle 55. The water is then transported by the water pump 53 and the water outlet pipe 54 to the atomizing nozzle 55 for atomization. The atomized water then interacts with the dust in the first dust removal chamber 2. The dust-laden gas comes into full contact, completing the initial dust removal. The gas after the initial dust removal is drawn into the second dust removal chamber 3 by the centrifugal induced draft fan 63 through the connecting pipe 62. Since one end of the exhaust pipe 64 is lower than the water level in the box 1, the residual fine dust is removed again by the dissolving and adsorption effect of water. At the same time, the motor 71 drives the rotating shaft 72 and the rotating block 73 to rotate. The oblique hole 74 of the rotating block 73 can easily rotate to release air, thereby increasing the contact area between the gas and water and making the contact more complete. The rotating rod 75 rotates to break up the air bubbles, which can prevent the air bubbles from blocking the dust removal efficiency. The purified gas is discharged through the exhaust frame 81 and the second filter screen 82.

[0040] It should be noted that the specific models and specifications of the water pump 53 and the centrifugal induced draft fan 63 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0041] The power supply and operating principle of the water pump 53 and the centrifugal induced draft fan 63 are clear to those skilled in the art and will not be described in detail here.

[0042] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An integrated dust removal device for a concrete mixing plant, comprising a housing (1), characterized in that: The housing (1) has a first dust removal chamber (2) and a second dust removal chamber (3) inside. The first dust removal chamber (2) is connected to the second dust removal chamber (3). An air inlet pipe (4) is connected to one side of the housing (1). A spray assembly (5) is installed in the first dust removal chamber (2). An air suction assembly (6) is installed in the second dust removal chamber (3). A rotating assembly (7) is installed on one side of the housing (1). The rotating assembly (7) is rotatably connected to the air suction assembly (6). An exhaust assembly (8) is connected to the top of the housing (1).

2. The integrated dust removal device for a concrete mixing plant according to claim 1, characterized in that, The spray assembly (5) includes a filter frame (51) fixedly connected to the inner wall of the housing (1), a water suction pipe (52) connected to one side of the housing (1), the filter frame (51) covering one end of the water suction pipe (52), a water pump (53) installed on the outer wall of the housing (1), the water suction pipe (52) connected to the inlet of the water pump (53), the outlet of the water pump (53) connected to the outlet pipe (54), the outlet pipe (54) fixedly connected to the housing (1), and a plurality of atomizing nozzles (55) evenly connected to one side of the outlet pipe (54).

3. The integrated dust removal device for a concrete mixing plant according to claim 1, characterized in that, The air intake assembly (6) includes a first filter screen (61) fixedly connected to the inner wall of the housing (1), a connecting pipe (62) fixedly connected inside the housing (1), the first filter screen (61) covering one end of the connecting pipe (62), a centrifugal fan (63) connected to one end of the connecting pipe (62), the centrifugal fan (63) installed inside the housing (1), and an air outlet pipe (64) connected to the air outlet of the centrifugal fan (63).

4. The integrated dust removal device for a concrete mixing plant according to claim 3, characterized in that, The rotating assembly (7) includes a motor (71) installed on the top of the housing (1). The output end of the motor (71) is fixedly connected to a rotating shaft (72). The rotating shaft (72) is rotatably connected to the housing (1) and the air outlet pipe (64) respectively. A rotating block (73) is fixedly connected to one end of the rotating shaft (72). Two oblique holes (74) are opened through the rotating block (73). Two rotating rods (75) are fixedly connected to the outer ring of the rotating block (73). A sealed bearing (65) is embedded in one end of the air outlet pipe (64). The rotating block (73) and the inner ring of the sealed bearing (65) are interference-fitted.

5. The integrated dust removal device for a concrete mixing plant according to claim 1, characterized in that, The exhaust assembly (8) includes an exhaust frame (81) connected to the top of the housing (1), and a second filter (82) is fixedly connected inside the exhaust frame (81).

6. The integrated dust removal device for a concrete mixing plant according to claim 1, characterized in that, The bottom of the box (1) is connected to a drain pipe (9), and a valve (10) is installed on the drain pipe (9).

7. An integrated dust removal device for a concrete mixing plant according to claim 1, characterized in that, The bottom of the box (1) is set in a cone shape.

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