A cleaning device for paper making

Abstract

The present application relates to the technical field of papermaking cleaning equipment, and in particular to a cleaning device for papermaking, which includes a box body, a gas delivery device and a liquid delivery device, one side of the box body is provided with an opening, an atomizing nozzle is provided in the box body, the injection port of the atomizing nozzle is directly opposite to the opening side of the box body, the atomizing nozzle includes a gas delivery pipeline, a liquid delivery pipeline and a nozzle connected in sequence, the gas delivery pipeline is connected to the gas delivery device through an air inlet pipe, and the liquid delivery pipeline is connected to the liquid delivery device through a liquid inlet pipe. The present application has the effect of making the water mist sprayed by the atomizing nozzle have more uniform kinetic energy.

Description

Technical Field

[0001] The present application relates to the technical field of papermaking cleaning equipment, and in particular to a cleaning device for papermaking. Background Art

[0002] In the papermaking process, the function of the wet end is mainly to control the moisture content of the pulp. First, the pulp is spread on the mesh, and the mesh is driven by a conveying device to move and enter between two squeezing rollers, thereby squeezing the pulp on the mesh to reduce the moisture content of the pulp. Finally, the pulp squeezed to the required moisture content is dried and formed into paper.

[0003] In this process, since the mesh serves as a water-permeable carrier, pulp fibers are likely to remain on the mesh when the pulp is squeezed by the squeezing roller. This causes the mesh to have reduced water permeability during the recycling process and the subsequent pulp spreading process, which deteriorates the quality of the subsequently formed paper, necessitating the need to clean the mesh.

[0004] The existing method of cleaning the mesh is mainly to convey the mesh through a conveying roller group, install a cleaning device on the mesh conveying path, and use the cleaning device to rinse the mesh during the conveying process. Since the mesh is relatively fragile as a whole, conventional cleaning mostly uses an atomizing nozzle for cleaning. However, in existing atomizing nozzles, the high-pressure water flow output from the pump body is usually directly atomized. The atomized water droplets caused by this method are uneven in size, resulting in a large difference in kinetic energy of the water droplets generated in each area, resulting in uneven force when cleaning the mesh, which can easily lead to incomplete local cleaning of the mesh. Summary of the invention

[0005] In order to make the water mist sprayed from the atomizing nozzle have more uniform kinetic energy, the present application provides a cleaning device for papermaking.

[0006] The present application provides a cleaning device for papermaking that adopts the following technical solution:

[0007] A cleaning device for papermaking comprises a box body, an air delivery device and a liquid delivery device. An opening is arranged on one side of the box body. An atomizing nozzle is arranged in the box body. The injection port of the atomizing nozzle is directly opposite to the opening side of the box body. The atomizing nozzle comprises an air delivery pipeline, a liquid delivery pipeline and a nozzle which are connected in sequence. The air delivery pipeline is connected to the air delivery device through an air inlet pipe, and the liquid delivery pipeline is connected to the liquid delivery device through a liquid inlet pipe.

[0008] By adopting the above technical solution, the atomizing nozzle arranged in the box body includes an air supply pipeline and a liquid supply pipeline, and the two realize gas supply and liquid supply respectively through the air supply device and the liquid supply device, and the gas and liquid two flows collide in the atomizing pipeline to produce more refined atomized water droplets, thereby realizing the refinement of the water droplets, reducing the difference in size and mass between the atomized water droplets, and making the kinetic energy of the atomized water droplets more uniform.

[0009] Optionally, the liquid infusion pipeline includes an outer tube layer, an intermediate body and a plurality of connecting parts, the intermediate body is arranged inside the outer tube layer and coaxially with the outer tube layer, each connecting part is fixedly connected to the two at the same time, and the closed loop between the two connecting parts, the outer tube layer and the intermediate body constitutes a branch channel connected to the gas pipeline, and the liquid infusion pipeline is provided with a liquid inlet channel, which passes through the outer tube layer, the connecting part and the intermediate body, the liquid inlet channel is connected to the liquid inlet pipe, and a plurality of liquid inlets connected to the branch channel and the liquid inlet channel are provided on the side wall of the intermediate body and the side wall of the outer tube layer.

[0010] By adopting the above technical scheme, a number of branch channels are formed between the outer tube layer, the intermediate body and a number of connecting parts, so that the high-pressure airflow input from the gas pipeline is divided into a plurality of small tributaries, and a liquid inlet connected to the liquid inlet channel is opened on the side wall of each branch channel, so that the fluid input from the infusion device can flow from the liquid inlet into the branch channel, and then collide and atomize under the action of the tributaries of the high-pressure airflow; compared with the traditional method of directly passing the fluid to the side wall of the high-pressure airflow, when inputting equal volumes of fluid, the traditional method can only fully mix on the outer circle of the high-pressure airflow, and the mixing area is small, while the present design divides the high-pressure airflow into a plurality of tributaries, and makes each tributary fully collide with the liquid in the liquid inlet of the side wall of the branch channel, so that when the same volume of fluid is input, the collision area with the high-pressure airflow is increased, thereby refining the size of the atomized water droplets.

[0011] Optionally, the liquid inlets are distributed in a circular shape with equal intervals along the side wall of the branch channel, and a plurality of groups of the liquid inlets distributed in a circular shape are provided along the length direction of the branch channel.

[0012] By adopting the above technical solution, the liquid inlet is arranged in a ring shape, and several groups of liquid inlet groups are arranged along the length direction of the branch channel, so as to perform multi-stage atomization, so that each air flow branch is fully atomized and collided from the inside to the outside, making the atomized water droplets smaller.

[0013] Optionally, the intermediate body is arranged in an elliptical shape, and its two ends are arranged in a colinear manner with the gas outlet of the gas pipeline.

[0014] By adopting the above technical solution, the intermediate body is set to be elliptical, so as to reduce the resistance encountered by the airflow output from the gas pipeline when it collides with the intermediate body for diversion, thereby reducing the kinetic energy loss of the airflow.

[0015] Optionally, a jet pipe is also connected between the infusion pipe and the nozzle, an annular groove is provided on the inner wall of the jet pipe, an annular receiving portion is coaxially fixed on the annular groove, an annular rotating portion is rotatably connected to the inner wall of the receiving portion, and a plurality of fan blades are fixedly provided on the inner wall of the rotating portion.

[0016] By adopting the above technical solution, a rotatable fan structure is provided in the jet pipe, and its blades are fixedly connected to the inner ring of the rotating part. When the once atomized fluid hits the fan blades, secondary atomization is performed, and the fan blades are driven to rotate, so that the atomized flow becomes smaller and then output from the nozzle.

[0017] Optionally, the fan blades are made of piezoelectric material.

[0018] By adopting the above technical solution, the piezoelectric material generates a positive piezoelectric effect when hit by an atomized flow, and opposite positive and negative charges appear on the inner and outer surfaces of the piezoelectric material, so that the droplets passing through its surface are positively charged, so that the sprayed atomized flow has better impurity removal ability.

[0019] Optionally, a liquid storage cavity is further provided in the box body, and the liquid storage cavity and the infusion device are connected via a liquid inlet tube. A plurality of atomizing nozzles are provided, and each of the atomizing nozzles is arranged at equal intervals along the length direction of the opening side of the box body. A receiving tube is provided between the liquid storage cavity and each of the atomizing nozzles, and a pressure regulating valve is arranged in series on the receiving tube.

[0020] By adopting the above technical solution, the liquid storage chamber arranged in the box body is used as a buffer chamber and a pressure stabilizing chamber. The infusion device transports the fluid medium into the liquid storage chamber, and then after reaching a certain hydraulic pressure, it enters the atomizing nozzle for atomization through the pressure regulating valve.

[0021] Optionally, a reverse flow valve is arranged in series on the pipeline between the liquid storage chamber and the infusion device.

[0022] By adopting the above technical solution, the reverse flow valve is provided to prevent the fluid medium in the liquid storage cavity from flowing back and causing damage to the infusion device.

[0023] Optionally, a driving motor is provided at one end of the box body, and a screw rod is coaxially fixedly connected to the rotating shaft of the driving motor, and the screw rod is arranged along the length direction of the opening on the box body. A bearing seat is fixedly provided at the other end of the box body, and the end of the screw rod facing away from the driving motor is rotatably connected to the bearing seat through a bearing, and a receiving block is threadedly connected to the screw rod, and the receiving block is fixedly connected to the atomizing nozzle. A guide rod parallel to the screw rod is also fixedly provided in the box body, and the guide rod passes through the receiving block.

[0024] By adopting the above technical solution, the receiving block can achieve stable movement under the action of both the screw structure and the guide rod, so that the atomizing nozzle can always be aligned with different positions of the box opening.

[0025] Optionally, a clamp is fixedly provided on the receiving block, and both the liquid inlet pipe and the air inlet pipe have a section fixedly connected to the receiving block through the clamp, and each pipe is fixedly connected to at least two of the clamps.

[0026] By adopting the above technical solution, a clamp is provided to fix a section of the pipe body of each of the liquid inlet pipe and the air inlet pipe, so that during the movement of the receiving block, the force at the connection between the two pipes and the atomizing nozzle is converted into the force at the pipe body, thereby avoiding wear on the connection between the pipe and the atomizing nozzle and increasing the service life of the atomizing nozzle.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. By setting the atomizing nozzle to be dominated by high-pressure airflow, the fluid passes through the atomizing nozzle from the side, so that the high-pressure gas tears the fluid into smaller atomized water droplets, thereby reducing the difference in the size of each atomized water droplet, thereby reducing the difference in kinetic energy of the atomized water droplets;

[0029] 2. An intermediate body and a connecting part are provided to form a plurality of branch channels, and the high-pressure airflow input from the gas pipeline is divided into shares, and then the fluid flows from the liquid inlet channel into the branch channel for multi-stage synchronous injection, thereby increasing the contact area between the high-pressure airflow and the fluid, and increasing the degree of refinement and mixing;

[0030] 3. Fan blades made of piezoelectric material are set to drive the fan blades to rotate for secondary atomization when the atomized flow passes through the fan blades, further improving the atomization degree. The atomized flow gives pressure to the fan blades, causing polarization differentiation of the fan blades, so that the passing atomized flow is charged, thereby further improving the impurity removal ability of the atomized flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of Example 1 of the present application.

[0032] Figure 2 It is a schematic diagram of the structure of the atomizing nozzle of an embodiment of the present application.

[0033] Figure 3 It is a structural diagram of Example 2 of the present application.

[0034] Description of reference numerals:

[0035] 1. Box body; 4. Atomizing nozzle; 41. Gas pipeline; 42. Liquid pipeline; 421. Outer tube layer; 422. Intermediate body; 423. Connecting part; 424. Branch channel; 425. Liquid inlet; 426. Liquid inlet; 43. Nozzle; 5. Gas inlet pipe; 6. Liquid inlet pipe; 7. Jet pipeline; 71. Annular groove; 72. Receiver; 73. Rotating part; 74. Fan blade; 8. Liquid storage chamber; 9. Receiver tube; 10. Pressure regulating valve; 11. Reverse flow valve; 12. Driving motor; 13. Screw; 14. Bearing seat; 15. Receiver block; 16. Guide rod; 17. Clamp. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-3 This application is described in further detail.

[0037] Example 1

[0038] The present application discloses a cleaning device for papermaking, referring to Figure 1 and Figure 2 A cleaning device for papermaking includes a U-shaped and horizontally arranged hollow box body 1, an external gas delivery device and an external liquid delivery device, wherein the gas delivery device is an air pump, and the liquid delivery device is a water pump. A rectangular opening is opened on the lower side of the middle section of the box body 1, and the length direction of the rectangular opening is arranged in the same direction as the length direction of the middle section. A liquid storage chamber 8 is also arranged in the box body 1, and the liquid storage chamber 8 and the liquid delivery device are connected through a liquid inlet pipe 6. A row of atomizing nozzles 4 are arranged in the box body 1, and the injection port of each atomizing nozzle 4 is directly opposite to the opening side of the box body 1. Each atomizing nozzle 4 is arranged at equal intervals along the length direction of the opening side of the box body 1. The liquid storage chamber 8 and each atomizing nozzle 4 are connected through a receiving pipe 9, and a pressure regulating valve 10 is arranged in series on the receiving pipe 9, and the threshold value set by each pressure regulating valve 10 is the same. A reverse flow valve 11 is arranged in series on the liquid inlet pipe 6, and the gas delivery device is connected with each atomizing nozzle 4 through the air inlet pipe 5.

[0039] The atomizing nozzle 4 comprises an air delivery pipeline 41, a liquid delivery pipeline 42, a jet pipeline 7 and a nozzle 43 which are connected in sequence.

[0040] The gas delivery pipeline 41 is a cylindrical pipeline and is connected to the air inlet pipe 5 .

[0041] The liquid delivery pipeline 42 includes a cylindrical outer tube layer 421, an elliptical intermediate body 422, and a plurality of plate-shaped connecting parts 423. The intermediate body 422 is arranged inside the outer tube layer 421 and is coaxially arranged with the outer tube layer 421. Each connecting part 423 is fixedly connected to both of them at the same time, and each connecting part 423 is arranged at equal intervals around the axis of the outer tube layer 421. The closed loop between the two connecting parts 423, the outer tube layer 421 and the intermediate body 422 constitutes a branch channel 424 connected to the gas delivery pipeline 41. The liquid delivery pipeline 42 is provided with a liquid inlet channel. 425, the liquid inlet channel 425 passes through the outer tube layer 421, the connecting portion 423 and the intermediate body 422, and the liquid inlet channel 425 is opened in the form of an annular channel in the outer tube layer 421, the liquid inlet channel 425 is connected to the liquid inlet pipe 6, and a plurality of liquid inlets 426 communicating with the branch channel 424 and the liquid inlet channel 425 are opened on the side wall of the intermediate body 422 and the side wall of the outer tube layer 421, and the liquid inlets 426 are distributed in an annular manner with equal intervals along the side wall of the branch channel 424, and a plurality of groups of annularly distributed liquid inlets 426 are arranged along the length direction of the branch channel 424,

[0042] An annular groove 71 is provided on the inner wall of the jet pipe 7, and an annular receiving portion 72 is coaxially fixedly arranged on the annular groove 71. An annular rotating portion 73 is rotatably connected to the inner wall of the receiving portion 72. A plurality of blades 74 are fixedly arranged on the inner wall of the rotating portion 73. Each blade 74 is inclined at forty-five degrees, and the blades 74 are made of piezoelectric material.

[0043] In Example 1 of the present application, the implementation principle of a cleaning device for papermaking is: the air pump and the water pump are driven simultaneously to provide airflow and fluid to the atomizing nozzle 4, wherein the airflow serves as the main channel medium, passes through the branch channel 424 of the atomizing nozzle 4 in turn, collides with the fluid to be atomized, hits the fan blades 74 for secondary atomization, and is output from the nozzle 43 after being charged.

[0044] Example 2

[0045] The present application discloses a cleaning device for papermaking, referring to Figure 3 , which is different from Example 1 in that: a driving motor 12 is horizontally arranged at one end of the box body 1, a screw rod 13 is coaxially fixedly connected to the rotating shaft of the driving motor 12, and the length direction of the screw rod 13 is arranged parallel to the length direction of the rectangular opening, and a bearing seat 14 is fixedly arranged at the other end of the box body 1, and the end of the screw rod 13 away from the driving motor 12 is rotatably connected to the bearing seat 14 through a bearing, a rectangular receiving block 15 is threadedly connected to the screw rod 13, and an atomizing nozzle 4 is arranged on the receiving block 15, and a guide rod 16 parallel to the screw rod 13 is also fixedly arranged in the box body 1, and the guide rod 16 passes through the receiving block 15.

[0046] A clamp 17 is also fixedly provided on the receiving block 15. Both the liquid inlet pipe 6 and the air inlet pipe 5 have a section fixedly connected to the receiving block 15 through the clamp 17. Each pipe is fixedly connected with two clamps 17. A through hole connecting the air inlet pipe 5 and the gas pipeline 41 is opened on the receiving block 15, so that the air inlet pipe 5 is connected to the gas pipeline 41 of the atomizing nozzle 4, and the liquid inlet pipe 6 is connected to the liquid inlet channel 425 of the liquid pipeline 42.

[0047] In the second embodiment of the present application, a cleaning device for papermaking is implemented in accordance with the following principles: the atomizing nozzle 4 can be indirectly driven to move along the length direction of the opening of the box body 1 through the screw rod 13 structure.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cleaning device for papermaking, characterized in that: The invention comprises a box body (1), a gas delivery device and a liquid delivery device, wherein one side of the box body (1) is open, an atomizing nozzle (4) is arranged inside the box body (1), the spray port of the atomizing nozzle (4) is directly opposite to the open side of the box body (1), the atomizing nozzle (4) comprises a gas delivery pipeline (41), a liquid delivery pipeline (42) and a nozzle (43) which are connected in sequence, the gas delivery pipeline (41) is connected to the gas delivery device via an air inlet pipe (5), and the liquid delivery pipeline (42) is connected to the liquid delivery device via a liquid inlet pipe (6); The liquid delivery pipeline (42) comprises an outer tube layer (421), an intermediate body (422) and a plurality of connecting parts (423); the intermediate body (422) is arranged inside the outer tube layer (421) and coaxially with the outer tube layer (421); each connecting part (423) is fixedly connected to both of them at the same time; a closed loop between the two connecting parts (423), the outer tube layer (421) and the intermediate body (422) forms a branch channel connected to the gas delivery pipeline (41). (424), a liquid inlet channel (425) is provided on the liquid infusion pipeline (42), the liquid inlet channel (425) passes through the outer tube layer (421), the connecting portion (423) and the intermediate body (422), the liquid inlet channel (425) is communicated with the liquid inlet pipe (6), and a plurality of liquid inlets (426) are provided on the side wall of the intermediate body (422) and the side wall of the outer tube layer (421), which are communicated with the branch channel (424) and the liquid inlet channel (425); The liquid inlets (426) are distributed in a circular manner at equal intervals along the side wall of the branch channel (424), and a plurality of groups of the liquid inlets (426) distributed in a circular manner are provided along the length direction of the branch channel (424).

2. A cleaning device for papermaking according to claim 1, characterized in that: The intermediate body (422) is arranged in an elliptical shape, and its two ends are arranged in a colinear manner with the gas outlet of the gas transmission pipeline (41).

3. A cleaning device for papermaking according to claim 1, characterized in that: A jet pipe (7) is also provided between the liquid infusion pipe (42) and the nozzle (43), an annular groove (71) is provided on the inner side wall of the jet pipe (7), an annular receiving portion (72) is coaxially fixedly provided on the annular groove (71), an annular rotating portion (73) is rotatably connected to the inner side wall of the receiving portion (72), and a plurality of fan blades (74) are fixedly provided on the inner side wall of the rotating portion (73).

4. A cleaning device for papermaking according to claim 3, characterized in that: The fan blades (74) are made of piezoelectric material.

5. A cleaning device for papermaking according to claim 1, characterized in that: The box body (1) is further provided with a liquid storage chamber (8), the liquid storage chamber (8) and the infusion device are connected via a liquid inlet pipe (6), a plurality of atomizing nozzles (4) are provided, and the atomizing nozzles (4) are arranged at equal intervals along the length direction of the opening side of the box body (1), a receiving pipe (9) is provided between the liquid storage chamber (8) and the atomizing nozzles (4), and a pressure regulating valve (10) is provided in series on the receiving pipe (9).

6. A cleaning device for papermaking according to claim 5, characterized in that: A reverse flow valve (11) is arranged in series on the pipeline between the liquid storage chamber (8) and the infusion device.

7. A cleaning device for papermaking according to claim 1, characterized in that: A driving motor (12) is arranged at one end of the box body (1), a screw rod (13) is coaxially fixedly connected to the rotating shaft of the driving motor (12), the screw rod (13) is arranged along the length direction of the opening on the box body (1), a bearing seat (14) is fixedly arranged at the other end of the box body (1), the end of the screw rod (13) away from the driving motor (12) is rotatably connected to the bearing seat (14) through a bearing, a receiving block (15) is threadedly connected to the screw rod (13), and the receiving block (15) is fixedly connected to the atomizing nozzle (4), and a guide rod (16) parallel to the screw rod (13) is also fixedly arranged in the box body (1), and the guide rod (16) passes through the receiving block (15).

8. A cleaning device for papermaking according to claim 7, characterized in that: A clamp (17) is also fixedly provided on the receiving block (15), and a section of both the liquid inlet pipe (6) and the air inlet pipe (5) is fixedly connected to the receiving block (15) via the clamp (17), and each pipe is fixedly connected to at least two of the clamps (17).

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