Internal dust removal device for papermaking workshop

Abstract

The utility model relates to the technical field of papermaking dust removal equipment, in particular to a papermaking workshop internal dust removal device which comprises a dust collection chamber, negative pressure equipment and dust removal equipment, the top and the bottom of the dust collection chamber are provided with an exhaust pipe and a discharge pipe respectively, the negative pressure equipment comprises a negative pressure fan, a fan inlet pipe and a fan outlet pipe, and the fan inlet pipe and the fan outlet pipe are connected to the negative pressure fan. The fan inlet pipe is communicated with a plurality of paper machine dust collection pipes and a plurality of splitting machine dust collection pipes, the fan outlet pipe is communicated with the dust collection chamber and arranged in the tangential direction of the dust collection chamber, the dust removal equipment comprises a dust removal water pump, a water inlet pipe and a water supply pipe, the water inlet pipe and the water supply pipe are connected to the dust removal water pump, and an atomization assembly is arranged at the end of the water supply pipe and installed in the exhaust pipe. According to the utility model, the potential safety hazard in the papermaking workshop is effectively reduced, the environment and the health of workers are protected, the separation efficiency of waste paper dust can be improved, the secondary pollution of raised dust is avoided, the recycling of the waste paper dust is realized, the resource waste is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking dust removal equipment, and in particular relates to an internal dust removal device of a papermaking workshop. Background Art

[0002] Papermaking is an important utility model of the working people in ancient China. Machine papermaking is carried out continuously on a papermaking machine. Pulp suitable for paper quality is diluted with water to a certain concentration, and initially dehydrated on the wire section of the papermaking machine to form wet paper sheets, which are then pressed for dehydration and then dried into paper.

[0003] In the papermaking production workshop, a lot of paper dust and paper scraps are generated, and a large amount of waste paper dust floats in the air. When workers are in this working environment for a long time, they are likely to suffer from respiratory diseases, which directly affects their health. In addition, the waste paper dust is large in quantity, and the particles are irregular in shape, large and small, and it is difficult to collect and treat them in the air. At the same time, a large number of particles gather together, which may cause explosions and pose safety hazards. The existing dust removal method usually adopts a bag dust collector, which mainly reduces the waste paper dust in the gas by filtering, adsorbing and separating the dust-containing gas generated by the papermaking equipment on the surface of the filter bag to achieve the purpose of purifying the air. Although it has the advantages of high efficiency, energy saving and easy maintenance, the waste paper dust in the dust-containing gas is easy to gather on the surface of the filter bag, which increases its resistance to the airflow, thereby causing the filter bag to be blocked. Therefore, it is necessary to pay attention to regular cleaning and replacement of the filter bag, and timely inspection and maintenance, otherwise it will greatly reduce its filtration efficiency and even shorten its service life, thereby increasing the cost of use.

[0004] Therefore, we propose a dust removal device inside a papermaking workshop to solve the above technical problems. Utility Model Content

[0005] In order to solve at least one technical problem in the above-mentioned background technology, the utility model proposes an internal dust removal device for a papermaking workshop.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A dust removal device inside a papermaking workshop comprises a dust collecting chamber, a negative pressure device and a dust removal device, wherein an exhaust pipe and a discharge pipe are respectively arranged at the top and the bottom of the dust collecting chamber, the negative pressure device comprises a negative pressure fan and a fan inlet pipe and a fan outlet pipe connected to the negative pressure fan, the fan inlet pipe is connected to a plurality of paper machine dust suction pipes and a plurality of slitting machine dust suction pipes, the fan outlet pipe is connected to the dust collecting chamber and is arranged along the tangent direction of the dust collecting chamber, the dust removal device comprises a dust removal water pump and a water inlet pipe and a water supply pipe connected to the dust removal water pump, an atomization component is arranged at the end of the water supply pipe, the atomization component is installed in the exhaust pipe and the atomization range can completely cover the circular area of ​​the cross section of the exhaust pipe.

[0008] The above technical solution is adopted, by connecting the paper machine dust suction pipe and the slitter dust suction pipe to the paper machine and the slitter respectively, connecting the water inlet pipe to the water tank, connecting the discharge pipe to the white water pool, and then starting to operate the equipment. During the operation of the papermaking equipment, the negative pressure fan is started, and negative pressure is formed through the fan inlet pipe and the fan outlet pipe. The waste paper dust generated during the operation of the paper machine and the slitter is attracted into the fan inlet pipe through the paper machine dust suction pipe and the slitter dust suction pipe, and then enters the dust collecting chamber through the fan outlet pipe. The fan outlet pipe is arranged along the tangential direction of the dust collecting chamber, and the principle of cyclone dust removal is utilized to ensure that when the dust-containing airflow enters the dust collecting chamber in the tangential direction, it will form a high-speed rotating vortex along the inner wall of the dust collecting chamber. This rotating vortex will throw the waste paper dust to the inner wall of the dust collector, and the gas will rise due to the centrifugal force and be discharged out of the dust collecting chamber through the exhaust pipe, thereby effectively separating the waste paper dust from the airflow and depositing it at the bottom of the dust collecting chamber, effectively improving the dust separation efficiency. At the same time, because it is equipped with dust removal equipment, when the negative pressure fan is working, the dust removal water pump draws water through the water inlet pipe, and supplies water to the atomizing assembly installed in the exhaust pipe through the water supply pipe. The atomizing effect covers the circular area of ​​the entire cross-section of the exhaust pipe, intercepting the dust in the exhaust gas to avoid secondary pollution caused by dust. After these waters fall into the dust collecting chamber, they merge with the waste paper dust in the dust collecting chamber and are discharged into the white water pool through the discharge pipe, so that the waste paper dust is recycled and utilized, reducing resource waste and reducing production costs. Compared with the bag dust collector in the prior art, this dust removal device utilizes the combination of cyclone dust removal principle and atomization dust removal technology to greatly improve the separation efficiency of waste paper dust, avoid secondary pollution of dust, and realize the recycling of waste paper dust, effectively reducing safety hazards in papermaking workshops and protecting the environment and workers' health.

[0009] In a further technical solution, a vortex tube is provided on the lower side of the dust collecting chamber and is arranged along the tangent direction of the dust collecting chamber, and the fan outlet pipe is detachably connected to the vortex tube.

[0010] By adopting the above technical solution, the fan outlet pipe and the vortex tube are connected in a detachable manner, which facilitates the installation and disassembly between the dust collecting chamber and the negative pressure fan, is beneficial to the maintenance and cleaning of the equipment, and is convenient to use.

[0011] In a further technical solution, the fan outlet pipe and the vortex tube are flange-connected.

[0012] By adopting the above technical solution and flange connection, good sealing performance of the connection can be ensured, air leakage can be avoided, and efficient operation of the negative pressure system can be maintained.

[0013] In a further technical solution, the atomizing assembly includes a first atomizing nozzle and a plurality of second atomizing nozzles, wherein the first atomizing nozzle is installed in the middle of the exhaust pipe, and the second atomizing nozzles are installed below the first atomizing nozzle and are arranged in a ring shape on the side wall of the exhaust pipe.

[0014] By adopting the above technical solution, through the arrangement of the first atomizing nozzle and the second atomizing nozzle, it is ensured that the atomization effect can cover the entire cross-section of the exhaust pipe, forming a three-dimensional atomization area, and improving the dust removal efficiency.

[0015] In a further technical solution, valves are provided on the paper machine dust suction pipe and the slitting machine dust suction pipe.

[0016] By adopting the above technical solution, each paper machine vacuum pipe and slitting machine vacuum pipe is provided with a valve, so that each vacuum point can be controlled independently. This design allows specific vacuum points to be opened or closed according to actual needs, thereby improving the flexibility and energy-saving effect of the system.

[0017] In a further technical solution, a frequency conversion control component is also included, and the frequency conversion control component includes a pressure sensor and a control system. The pressure sensor is installed on the fan inlet pipe, and the negative pressure fan and the pressure sensor are both electrically connected to the control system.

[0018] By adopting the above technical solution, the pressure changes in the fan inlet pipe are monitored by a pressure sensor, and the data is transmitted to the control system. The control system automatically adjusts the speed of the negative pressure fan according to the real-time data of the pressure sensor to ensure that the system operates under the optimal negative pressure state. Through frequency conversion control, the speed of the negative pressure fan can be adjusted according to actual needs, avoiding unnecessary high-load operation, significantly reducing energy consumption and improving operating efficiency.

[0019] In a further technical solution, the dust removal water pump is electrically connected to the control system and operates synchronously with the negative pressure fan.

[0020] By adopting the above technical solution, the dust removal water pump and the negative pressure fan operate synchronously, ensuring that when the negative pressure fan is started, the dust removal water pump also works at the same time, achieving the coordinated cooperation of water mist and negative pressure dust suction, improving the overall dust removal efficiency, while reducing energy consumption and lowering operating costs.

[0021] In a further technical solution, the water inlet pipe is connected to the condensate water pipeline of the paper machine.

[0022] By adopting the above technical solution, condensed water from the paper machine is used as a dust removal water source, thereby realizing the recycling of condensed water, reducing the pressure on natural water resources, and complying with the concept of sustainable development.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0024] 1. The utility model combines the cyclone dust removal principle and the atomization dust removal technology. Compared with the bag dust collector in the prior art, it not only reduces the frequency of inspection and maintenance, but also greatly improves the separation efficiency of waste paper dust, avoids the secondary pollution of dust, and realizes the recycling of waste paper dust, reduces resource waste, reduces production costs, effectively reduces safety hazards in papermaking workshops, and protects the environment and workers' health.

[0025] 2. In the utility model, valves are provided on each paper machine dust suction pipe and slitting machine dust suction pipe, so that each dust suction point can be controlled independently, which improves the flexibility of the system and enables specific dust suction points to be opened or closed according to actual needs, thereby saving energy and reducing costs.

[0026] 3. The utility model sets a frequency conversion control component to monitor the pressure changes in the fan inlet and automatically adjust the speed of the negative pressure fan to ensure that the system operates under the optimal negative pressure state, avoid unnecessary high-load operation, significantly reduce energy consumption, and improve operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0028] Figure 1 It is a schematic diagram of the structure of the utility model;

[0029] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0030] Figure 3 for Figure 1 A partial enlarged schematic diagram of point B in the middle;

[0031] Figure 4 It is a top view schematic diagram of the dust collecting chamber of the utility model.

[0032] Figure markings: 1-dust collecting chamber, 2-exhaust pipe, 3-discharge pipe, 4-negative pressure fan, 5-fan inlet pipe, 6-fan outlet pipe, 7-paper machine dust suction pipe, 8-slitting machine dust suction pipe, 9-dust removal water pump, 10-water inlet pipe, 11-water supply pipe, 12-vortex tube, 13-first atomizing nozzle, 14-second atomizing nozzle, 15-valve, 16-pressure sensor, 17-control system. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] Embodiment 1:

[0035] See also Figure 1 and Figure 4 The present embodiment provides an internal dust removal device for a papermaking workshop, comprising a dust collecting chamber 1, a negative pressure device and a dust removal device, wherein an exhaust pipe 2 and a discharge pipe 3 are respectively provided at the top and the bottom of the dust collecting chamber 1, the negative pressure device comprises a negative pressure fan 4 and a fan inlet pipe 5 and a fan outlet pipe 6 connected to the negative pressure fan 4, the fan inlet pipe 5 is connected to a paper machine dust suction pipe 7 and a slitting machine dust suction pipe 8, the fan outlet pipe 6 is connected to the dust collecting chamber 1 and arranged along the tangent direction of the dust collecting chamber 1, the dust removal device comprises a dust removal water pump 9 and a water inlet pipe 10 and a water supply pipe 11 connected to the dust removal water pump 9, an atomization component is provided at the end of the water supply pipe 11, the atomization component is installed in the exhaust pipe 2 and the atomization range can completely cover the circular area of ​​the cross section of the exhaust pipe 2.

[0036] Specifically, the paper machine vacuum pipe 7, the slitter vacuum pipe 8, the fan inlet pipe 5 and the fan outlet pipe 6 are pre-buried or installed at appropriate locations according to the on-site space conditions. Before the operation, the paper machine vacuum pipe 7 and the slitter vacuum pipe 8 are connected to the paper machine and the slitter respectively, the water inlet pipe 10 is connected to the water tank, and the discharge pipe 3 is connected to the white water pool, and then the equipment is started. During the operation of the papermaking equipment, the negative pressure fan 4 is started, and negative pressure is formed through the fan inlet pipe 5 and the fan outlet pipe 6. The waste paper dust generated during the operation of the paper machine and the slitter is attracted into the fan inlet pipe 5 through the paper machine dust suction pipe 7 and the slitter dust suction pipe 8, and then enters the dust collecting chamber 1 through the fan outlet pipe 6. The fan outlet pipe 6 is arranged along the tangential direction of the dust collecting chamber 1, and the principle of cyclone dust removal is utilized to ensure that when the dust-laden airflow enters the dust collecting chamber 1 in the tangential direction, it will form a high-speed rotating vortex along the inner wall of the dust collecting chamber 1. This rotating vortex will throw the waste paper dust to the inner wall of the dust collector, and the gas will rise due to the action of centrifugal force and be discharged from the dust collecting chamber 1 through the exhaust pipe 2, thereby effectively separating the waste paper dust from the airflow and depositing it at the bottom of the dust collecting chamber 1, effectively improving the dust separation efficiency. At the same time, because it is equipped with dust removal equipment, when the negative pressure fan 4 is working, the dust removal water pump 9 draws water through the water inlet pipe 10, and supplies water to the atomizing assembly installed in the exhaust pipe 2 through the water supply pipe 11. The atomizing effect covers the circular area of ​​the entire cross section of the exhaust pipe 2, intercepts the dust in the exhaust gas, and avoids secondary pollution caused by dust. After these waters fall into the dust collecting chamber 1, they merge with the waste paper dust in the dust collecting chamber 1 and are discharged into the white water pool through the discharge pipe 3, so that the waste paper dust is recycled and utilized, reducing resource waste and reducing production costs. Compared with the bag dust collector in the prior art, this dust removal device utilizes the combination of the cyclone dust removal principle and the atomization dust removal technology to greatly improve the separation efficiency of waste paper dust, avoid secondary pollution of dust, and realize the recycling of waste paper dust, effectively reducing the safety hazards in the papermaking workshop and protecting the environment and the health of workers. It is worth mentioning that the water inlet pipe 10 can also be connected to the paper machine condensate pipe, so that the paper machine condensate can be used as a dust removal water source, realizing the recycling of condensate, reducing the pressure on natural water resources, and complying with the concept of sustainable development.

[0037] In this embodiment, see Figure 2 The atomizing assembly includes a first atomizing nozzle 13 and a plurality of second atomizing nozzles 14. The first atomizing nozzle 13 is installed in the middle of the exhaust pipe 2, and the second atomizing nozzle 14 is installed below the first atomizing nozzle 13 and is arranged in a ring shape on the side wall of the exhaust pipe 2.

[0038] Specifically, the first atomizing nozzle 13 and the second atomizing nozzle 14 both adopt solid conical nozzles. Through the arrangement of the first atomizing nozzle 13 and the second atomizing nozzle 14, it is ensured that the atomization effect can cover the entire cross-section of the exhaust pipe 2, forming a three-dimensional atomization area and improving the dust removal efficiency.

[0039] Embodiment 2:

[0040] This embodiment is obtained by further optimizing the embodiment 1. Figure 1 and Figure 4 A vortex tube 12 is provided on the lower side of the dust collecting chamber 1 and is arranged along the tangent direction of the dust collecting chamber 1 , and the fan outlet pipe 6 is flange-connected to the vortex tube 12 .

[0041] Specifically, the fan outlet pipe 6 and the vortex tube 12 are connected by flange connection, which is convenient for installation and disassembly between the dust collecting chamber 1 and the negative pressure fan 4, is beneficial to the maintenance and cleaning of the equipment, and is easy to use. The flange connection can ensure good sealing performance at the connection, avoid air leakage, and maintain efficient operation of the negative pressure system.

[0042] Embodiment 3:

[0043] This embodiment is obtained by further optimizing on the basis of Embodiment 1 or Embodiment 2. In this embodiment, refer to Figure 3 The paper machine dust suction pipe 7 and the slitting machine dust suction pipe 8 are both provided with valves 15.

[0044] Specifically, each paper machine vacuum pipe 7 and slitting machine vacuum pipe 8 is provided with a valve 15, so that each vacuum point can be controlled independently. This design allows specific vacuum points to be opened or closed according to actual needs, thereby improving the flexibility and energy saving effect of the system.

[0045] Embodiment 4:

[0046] This embodiment is obtained by further optimizing on the basis of Embodiment 1, Embodiment 2 or Embodiment 3. In this embodiment, refer to Figure 1 , and also includes a frequency conversion control component, which includes a pressure sensor 16 and a control system 17. The pressure sensor 16 is installed on the fan inlet pipe 5, and the negative pressure fan 4 and the pressure sensor 16 are both electrically connected to the control system 17.

[0047] Specifically, the control system 17 adopts a relatively mature PLC controller in the prior art to ensure the stability and reliability of the control system 17. The pressure sensor 16 monitors the pressure changes in the fan inlet pipe 5 and transmits the data to the control system 17. The control system 17 automatically adjusts the speed of the negative pressure fan 4 according to the real-time data of the pressure sensor 16 to ensure that the system operates under the optimal negative pressure state. Through frequency conversion control, the negative pressure fan 4 can adjust the speed according to actual needs, avoiding unnecessary high-load operation, significantly reducing energy consumption, and improving operating efficiency.

[0048] In this embodiment, see Figure 1 The dust removal water pump 9 is electrically connected to the control system 17 and runs synchronously with the negative pressure fan 4.

[0049] Specifically, the dust removal water pump 9 runs synchronously with the negative pressure fan 4 to ensure that when the negative pressure fan 4 is started, the dust removal water pump 9 also works at the same time, thereby achieving coordinated cooperation between water mist and negative pressure dust suction, improving the overall dust removal efficiency, and reducing energy consumption and operating costs.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A dust removal device inside a papermaking workshop, characterized in that: The invention comprises a dust collecting chamber (1), a negative pressure device and a dust removal device. The top and bottom of the dust collecting chamber (1) are respectively provided with an exhaust pipe (2) and a discharge pipe (3). The negative pressure device comprises a negative pressure fan (4) and a fan inlet pipe (5) and a fan outlet pipe (6) connected to the negative pressure fan (4). The fan inlet pipe (5) is connected to a plurality of paper machine dust suction pipes (7) and a plurality of slitting machine dust suction pipes (8). The fan outlet pipe (6) is connected to the dust collecting chamber (1) and arranged along the tangent direction of the dust collecting chamber (1). The dust removal device comprises a dust removal water pump (9) and a water inlet pipe (10) and a water supply pipe (11) connected to the dust removal water pump (9). An atomizing assembly is provided at the end of the water supply pipe (11). The atomizing assembly is installed in the exhaust pipe (2) and the atomizing range can completely cover the circular area of ​​the cross section of the exhaust pipe (2).

2. The internal dust removal device of a papermaking workshop according to claim 1 is characterized in that: A vortex tube (12) is provided on the lower side of the dust collecting chamber (1) and is arranged along the tangent direction of the dust collecting chamber (1), and the fan outlet pipe (6) is detachably connected to the vortex tube (12).

3. The internal dust removal device of a papermaking workshop according to claim 2 is characterized in that: The fan outlet pipe (6) and the vortex tube (12) are flange-connected.

4. The dust removal device inside a papermaking workshop according to claim 1, characterized in that: The atomizing assembly comprises a first atomizing nozzle (13) and a plurality of second atomizing nozzles (14); the first atomizing nozzle (13) is installed in the middle of the exhaust pipe (2); and the second atomizing nozzles (14) are installed below the first atomizing nozzle (13) and are arranged in a ring shape on the side wall of the exhaust pipe (2).

5. The internal dust removal device of a papermaking workshop according to claim 1, characterized in that: The paper machine dust suction pipe (7) and the slitting machine dust suction pipe (8) are both provided with valves (15).

6. The dust removal device inside a papermaking workshop according to claim 5, characterized in that: It also includes a frequency conversion control component, which includes a pressure sensor (16) and a control system (17). The pressure sensor (16) is installed on the fan inlet pipe (5), and the negative pressure fan (4) and the pressure sensor (16) are both electrically connected to the control system (17).

7. The internal dust removal device of a papermaking workshop according to claim 6, characterized in that: The dust removal water pump (9) is electrically connected to the control system (17) and operates synchronously with the negative pressure fan (4).

8. The dust removal device inside a papermaking workshop according to claim 1, characterized in that: The water inlet pipe (10) is connected to the condensate water pipeline of the paper machine.

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