Water blowing system and fiber cement board press

Abstract

The utility model relates to the technical field of plate body water blowing, and provides a water blowing system, which comprises a fan, a main air pipe and a plurality of branch air pipes, the branch air pipes are sequentially communicated on the main air pipe at intervals along the extension direction of the main air pipe, the fan is communicated with the main air pipe, each branch air pipe is communicated with an air knife, and the air knife is communicated with the main air pipe. Each air knife is provided with a plurality of air outlets, and each branch air pipe is provided with a control piece for controlling a pipeline of the branch air pipe to be opened or closed. The utility model further provides a fiber cement board pressing machine which comprises a machine frame and the water blowing system, and the water blowing system is installed on the machine frame. By adopting the water blowing system, the air knife can be controlled to blow out high-pressure air under the control of the control piece, so that waste water is circularly blown from one position to one direction and can be separated from a product after being blown to corners, the control is simple, the production efficiency is improved, the quality of the product is stabilized, and the production cost is reduced. And all the parts are easy to disassemble and convenient to repair and maintain.

Description

Technical Field

[0001] This utility model relates to the field of water blowing technology for boards, specifically a water blowing system and a fiber cement board press. Background Technology

[0002] In the current process of pressing high-density calcium silicate boards both domestically and internationally, wastewater is squeezed out from the slab stack. However, the squeezed wastewater cannot be removed from the slab in time and often remains in large quantities at the edges of the slab and the steel formwork. The common method is to manually clean the residual wastewater carefully with a compressed air hose after pressing and when the slab stack comes out of the press, or to manually sweep the area around the slab stack. One of these methods is labor-intensive and time-consuming, affecting production efficiency, while the other, although simpler in operation, affects subsequent pre-curing and steam curing processes due to the difference in moisture content between the inside and edges of the slab, and may also affect the quality of the slab. Utility Model Content

[0003] The purpose of this invention is to provide a water blowing system and a fiber cement board press, which can at least solve some of the defects in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a water blowing system, including a fan, a main air duct, and several branch air ducts, wherein each branch air duct is sequentially and spaced apart from the main air duct along the extension direction of the main air duct, the fan is connected to the main air duct, each branch air duct is connected to an air knife, each air knife has several air outlets, and each branch air duct is provided with a control component for controlling the opening or closing of the branch air duct.

[0005] Furthermore, each of the air outlets is sequentially and spaced apart on the air knife along the extension direction of the air knife.

[0006] Furthermore, the control component includes a pneumatic butterfly valve, and each of the branch ducts is connected to the main duct through the pneumatic butterfly valve.

[0007] Furthermore, the branch duct is connected to the air knife via a flexible hose.

[0008] Furthermore, the hose is fixedly connected to the air knife and the branch air pipe respectively by a hose clamp.

[0009] Furthermore, it also includes an air knife bracket for installing the air knife on the compressor.

[0010] Furthermore, the air knife is rotatably mounted on the air knife bracket.

[0011] Furthermore, it also includes duct supports for installing the main air duct on the compressor.

[0012] This utility model provides another technical solution: a fiber cement board press, including a frame and the above-mentioned water blowing system, wherein the water blowing system is installed on the frame.

[0013] Furthermore, there are two sets of the water blowing system, which are respectively located on opposite sides of the frame.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by using this water blowing system, the air knife can be controlled to blow out high-pressure air under the control of the control component, so that the wastewater is blown in one direction from one point until it reaches the corner, so that the wastewater can be separated from the product. It is simple to operate, improves production efficiency and stabilizes product quality. Moreover, the components are easy to disassemble, which facilitates maintenance. Attached Figure Description

[0015] Figure 1 A schematic diagram of a water blowing system provided for an embodiment of this utility model (only one set of air knives is shown);

[0016] Figure 2 A schematic diagram of a fiber cement board press provided for an embodiment of this utility model;

[0017] Figure 3 for Figure 2 First-person perspective illustration;

[0018] Figure 4 for Figure 2 A second-person perspective illustration;

[0019] Figure 5 A first-view schematic diagram of an air knife for a water blowing system provided in an embodiment of this utility model;

[0020] Figure 6 A second-view schematic diagram of an air knife for a water blowing system provided in an embodiment of this utility model;

[0021] In the attached diagram, the following labels are used: 1-Water blowing system; 10-Fan; 11-Main air duct; 110-Air duct support; 12-Branch air duct; 13-Air knife; 130-Air outlet; 131-Air inlet; 132-Screw; 133-Air knife support; 14-Pneumatic butterfly valve; 15-Hose; 2-Frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This utility model provides a water blowing system 1, including a blower 10, a main air duct 11, and several branch air ducts 12. Each branch air duct 12 is sequentially and spaced apart from the main air duct 11 along its extension direction. The blower 10 is connected to the main air duct 11. Each branch air duct 12 is connected to an air knife 13, and each air knife 13 has several air outlets 130. Each branch air duct 12 is equipped with a control element to control the opening or closing of the branch air duct 12. In this embodiment, using this water blowing system 1, the air knife 13 can be controlled by the control element to blow high-pressure air, thereby circulating wastewater from one point to one direction until it reaches the corner, thus separating the wastewater from the product. The system is simple to operate, improves production efficiency, stabilizes product quality, and the components are easy to disassemble for maintenance. Specifically, a main air duct 11 is designed to supply air to several branch air ducts 12. Multiple air knives 13 then spray high-speed gas, or high-pressure air, to blow away the wastewater. By using control components to regulate the timing of the air jets from different air knives 13, the air knives 13 can be positioned according to the direction of wastewater flow. For example, if the air knives 13 are arranged in a line, they can be opened starting from the middle air knives 13 and moving towards the ends, creating a cyclical blowing pattern. This allows the wastewater to be blown to the edges and away from the product. The middle air knives 13 can be positioned anywhere on the side of the slab stack in the middle of the press frame, while the air knives 13 positioned at the edge of the press frame can be positioned at the ends of the slab stack. Preferably, the blower 10 used is a high-pressure blower. The high-pressure blower operates continuously, blowing air through the main air duct 11 into the branch air ducts. The high-pressure air is then sequentially blown into each air knives 13 by the opening and closing of pneumatic butterfly valves 14.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6Each of the air outlets 130 is sequentially and spaced apart on the air knife 13 along its extension direction. In this embodiment, the air outlets 130 can be spaced apart on the air knife 13. An air inlet 131 is also provided on the air knife 13, which can be connected to a flexible hose 15. The position, size, and number of the air inlets 131 can be customized according to the press requirements, and can be located on the back, side, or upper and lower ends of the air knife 13. The air outlets 130 can also be selected and arranged according to the required thickness and air pressure / volume of the fiber cement board to be pressed, and the angle of the slope can be adjusted as required, or a planar structure can be adopted. The flexible hose 15 is fixedly connected to the air knife 13 and the branch duct 12 respectively via hose clamps.

[0025] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The control component includes a pneumatic butterfly valve 14, and each branch duct 12 is connected to the main duct 11 via the pneumatic butterfly valve 14. In this embodiment, the control component is refined, and the control method can be a pneumatic butterfly valve 14. The pneumatic butterfly valve 14 can open and close to control whether the branch duct 12 is open or closed, thereby controlling whether the corresponding air knife 13 is ejected. Of course, other existing methods of movable flow path blocking can also be used, and this embodiment does not limit this. Preferably, the branch duct and the pneumatic butterfly valve 14 are connected to the main duct 11 via flanges.

[0026] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The system also includes an air knife bracket 133 for mounting the air knife 13 on the press. The system also includes an air duct bracket 110 for mounting the main air duct 11 on the press. In this embodiment, the air knife 13 can be mounted on the press using the air knife bracket 133, specifically on the press frame 2. The number of air knife brackets 133 can be matched to the number of air knives 13 to ensure that each air knife 13 is mounted on the press using an air knife bracket 133. The air knife bracket 133 can be installed at any position on the press frame according to the size of different presses. Preferably, the air knife 13 is rotatably mounted on the air knife bracket 133. The rotatable design of the air knife 13 allows for adjustment of the air blowing angle. The length and size of the air knife 13 can be changed according to the pressing of different specifications of fiber cement boards and the stacking height of the boards. Furthermore, after installation, the height of the air knife 13 can be adjusted and the orientation of its outlet 130 can be rotated. Both the duct bracket 110 and the fan 10 bracket can be arbitrarily fixed to the side of the press frame 2, depending on the actual situation of the press. Preferably, the air knife 13 is rotatably mounted on the air knife bracket 133 via a screw 132. The duct bracket 110 and the main duct 11 can be installed on both sides of the press frame 2 and fixed to the press plate frame by welding or bolts. The fan 10 and the fan 10 bracket are installed on both sides of the press frame 2 and fixed to the press plate frame by welding or bolts.

[0027] The specific working principle of this system is as follows: The high-pressure blower starts, and the pneumatic butterfly valves 14 open sequentially from the center outwards. This causes the air knives 13 to blow high-pressure air, circulating the wastewater in one direction from a single point until it reaches the corners, causing the wastewater to detach from the slab stack. Specifically, after the slab stack enters the press, as the press presses the slab stack, the blower 10 starts, and one end of the pneumatic butterfly valve 14 opens first. The air knives 13 initially blow the wastewater squeezed out from the center of the slab in one direction. After maintaining this for 10-20 seconds, this pneumatic butterfly valve 14 closes, and the next pneumatic butterfly valve 14 in the same direction opens. The next air knife 13 then continues to blow the discharged wastewater in the same direction, repeating this cycle until the wastewater detaches from the slab and flows under the press. The repeated opening and closing of the pneumatic butterfly valves 14 ensures that the wastewater squeezed out from the sides of the slab stack is continuously blown away in the same direction and detaches from the slab, flowing under the press.

[0028] When pressing slabs of different sizes, the nut and screw 132 connecting the air knife bracket 133 and the air knife 13 can be loosened to adjust the air outlet 130 angle of the air knife 13, ensuring that the airflow range covers the length of the slab. After adjustment, tighten the nut and screw 132 to complete the process. If the adjustment is still not suitable, the air knife bracket 133 can be added to adjust the installation position of the air knife 13, or the air knife 13 of a different size can be replaced.

[0029] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This utility model provides a fiber cement board press, including a frame 2 and the aforementioned water blowing system 1, which is mounted on the frame 2. In this embodiment, the water blowing system 1 is used on the fiber cement board press and can be directly installed on the frame 2, enabling automated treatment of the extruded wastewater during slab pressing, thus improving the press's automation level. On one hand, it eliminates the need for manual water blowing after pressing, reducing the labor intensity of operators; on the other hand, it eliminates the production downtime caused by manual water blowing after pressing. Under the same conditions, automatically completing the water blowing work during pressing significantly shortens the downtime for water blowing after pressing, improving production efficiency, ensuring stable slab quality, and achieving cost reduction and efficiency improvement.

[0030] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 There are two sets of the water blowing system 1, which are respectively located on opposite sides of the frame 2. In this embodiment, one set is symmetrically configured on each of the left and right sides of the press, and the number and position of the air knives 13 can be adjusted arbitrarily according to the needs of the press.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water blowing system, comprising a blower, characterized in that: It also includes a main air duct and several branch air ducts. Each branch air duct is sequentially and spaced apart from the main air duct along its extension direction. The fan is connected to the main air duct. Each branch air duct is connected to an air knife. Each air knife has several air outlets. Each branch air duct is equipped with a control device to control the opening or closing of the branch air duct.

2. The water blowing system as described in claim 1, characterized in that: Each of the air outlets is arranged sequentially and at intervals on the air knife along the extension direction of the air knife.

3. The water blowing system as described in claim 1, characterized in that: The control component includes a pneumatic butterfly valve, and each of the branch ducts is connected to the main duct through the pneumatic butterfly valve.

4. The water blowing system as described in claim 1, characterized in that: The branch duct is connected to the air knife via a flexible hose.

5. The water blowing system as described in claim 4, characterized in that: The hose is fixedly connected to the air knife and the branch duct respectively by a hose clamp.

6. The water blowing system as described in claim 1, characterized in that: It also includes the air knife bracket for installing the air knife on the compressor.

7. The water blowing system as described in claim 6, characterized in that: The air knife is rotatably mounted on the air knife bracket.

8. The water blowing system as described in claim 1, characterized in that: It also includes duct supports for installing the main air duct on the compressor.

9. A fiber cement board press, comprising a frame, characterized in that: It also includes a water blowing system as described in any one of claims 1-8, the water blowing system being mounted on the frame.

10. The fiber cement board press as described in claim 9, characterized in that: There are two sets of the water blowing system, which are respectively located on opposite sides of the frame.

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