Paper machine dust removal device

Abstract

The utility model discloses a dedusting device for a paper machine, which comprises a separating barrel, a backwashing filter and a water tank which are circularly connected to form a circulating water path, the separating barrel is at least connected with two sections of air pipes, the first air pipe is connected with a dust area of the paper machine, and the second air pipe is connected with an exhaust fan. According to the device, spraying water can be recycled, a large amount of water resources can be saved, and meanwhile the production water cost is reduced; besides, a backwashing filter is arranged in a circulating water path of the device, so that impurities can be effectively filtered, and the problems that the impurities in the circulating water are continuously accumulated, the nozzle is blocked, the dust removal effect is influenced, the working efficiency is reduced and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dust removal device, especially a paper machine dust removal device. BACKGROUND

[0002] Paper machine produces a large amount of paper dust in the production process, which not only affects the appearance of paper, but also has serious fire hazards. At this time, the paper machine dust removal system is needed to remove the paper dust in the production process of the paper machine dry part. The existing dust removal device mainly has two technical problems: one is that a large amount of water is needed in the spraying process, and the traditional paper machine dust removal device directly discharges the washed water to the ditch, wasting a large amount of water resources; the second is that after the dust removal device is used for a long time, the dust is easily enriched in the circulating water, which increases the impurities in the water, blocks the nozzle, and affects the dust removal effect and reduces the working efficiency. UTILITY MODEL CONTENT

[0003] The utility model aims at providing a paper machine dust removal device with spraying water recycling and good dust removal effect.

[0004] Technical scheme: the paper machine dust removal device, comprising a separation barrel connected in circulation, a backwashing filter and a water tank, a circulating water circuit is formed, the separation barrel is connected with at least two sections of air pipe, wherein the first air pipe is connected with the dust area of the paper machine, and the second air pipe is connected with the exhaust fan.

[0005] Further, the separation barrel, the backwashing filter and the water tank are connected in circulation through the water pipe.

[0006] Further, the separation barrel is internally provided with a spraying nozzle, and the spraying nozzle is communicated with the water pipe. The spraying inside the separation barrel is used for washing the dust sucked into the separation barrel; the separation barrel separates water vapor through the rotation of the flowing air flow with different densities and the centrifugal force of different substances, the clean gas is sucked into the exhaust fan and discharged to the atmosphere, and the water-containing dust falls to the bottom of the separation barrel.

[0007] Further, the circulating water circuit is provided with a flow meter and a circulating water pump, the flow meter is used for monitoring the water flow, and when the flow is lower than a certain value, the filter is arranged to automatically backwash.

[0008] Further, the separation barrel in the circulating water circuit is provided with a plurality of separation barrels for collecting dust from different areas.

[0009] Further, the water and impurities flowing into the bottom of the separation barrel flow into the water tank through the drain pipe.

[0010] Further, after the fan is started, the separation barrel and the air pipe form a negative pressure to suck the dust in the paper machine area.

[0011] Further, when the water tank liquid level is low, water can be supplemented through the water supplement pipe, a float ball valve is installed at the water tank connection position, automatic water supplement of the water tank low liquid level is realized, and sufficient water source of the spray system is ensured.

[0012] Further, a sewage outlet is further arranged below the water tank.

[0013] Beneficial effects: compared with the prior art, the device has the following advantages: the device can realize recycling of the spray water, is beneficial to saving a large amount of water resources, and simultaneously reduces production water cost; in addition, the device is provided with a backwashing filter in the circulating water path, can effectively filter impurities, thereby avoiding continuous accumulation of impurities in the circulating water, causing nozzle blockage, affecting dust removal effect and reducing working efficiency and the like problems. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural device diagram of the utility model. DETAILED DESCRIPTION

[0015] The technical scheme of the utility model will be further described below in combination with the drawings.

[0016] Figure 1 The reference signs in the drawings are as follows: 1-separation bucket, 2-backwashing filter, 3-water tank, 4-1-first air pipe, 4-2-second air pipe, 5-exhaust fan, 6-water pipe, 7-flow meter, 8-circulating water pump, 9-water supplement pipe, 10-sewage outlet.

[0017] EMBODIMENT

[0018] The paper machine dust removal device disclosed by the utility model is as shown in the drawing, and comprises a separation bucket 1, a backwashing filter 2 and a water tank 3 connected in sequence through a water pipe 6, wherein the three constitute a circulating water path. Figure 1 The first air pipe 4-1 is connected with a dust area of the paper machine, and the second air pipe 4-2 is connected with an exhaust fan 5. The water pipe 6 is connected with the circulating water pump 8, and the outlet of the circulating water pump 8 is provided with the backwashing filter 2 with a filter screen specification of 10 meshes for filtering impurities and avoiding nozzle blockage. The flow meter 7 is installed at a position 1 meter away from the outlet of the backwashing filter 2 for monitoring water flow, and the backwashing filter 2 is automatically backwashed for 30 seconds when the flow is lower than 150 L / min. The outlet of the flow meter 7 is connected with the water pipe 6, the water pipe 6 is communicated with each water point of the separation bucket 1, and each spray system normally operates when the circulating water pump 8 operates.

[0019] Workflow: After starting the exhaust fan 5, the separation bucket 1 and the air pipe form a negative pressure, each separation bucket 1 starts working at the same time, inhales the dust in the paper machine initial winding area, and opens the circulating water pump 8, the spray water is sent to each separation bucket 1 through the water pipe 6 to realize spraying, and washes the dust inhaled into the separation bucket 1. The separation bucket 1 rotates with different densities by flowing air, and the centrifugal force of different substances, separates water vapor, and clean gas is sucked into the exhaust fan 5 and discharged into the atmosphere, and the spray water containing dust falls to the bottom of the separation bucket 1, enters the water tank 3 through the drain pipe, and the spray water is used as circulating water. When the water level in the water tank 3 is low, water is added through the float ball valve installed at the connection with the water tank 3, so that the water tank 3 can realize automatic water replenishment when the water level is low through the water replenishment pipe 9, and the water source of the spraying system is sufficient; when the water flow monitored by the flow meter 7 is lower than 150L / min, the backwashing filter 2 is automatically backwashed for 30 seconds. The water in the water tank 3 also undergoes physical sedimentation of impurities including system heavy slag and caked materials while circulating, and the impurities are discharged through the blowdown port 10. The water tank 3 can be cleaned once a week to remove the residual impurities (heavy slag) at the bottom.

[0020] The device can realize the recycling of spray water, which is beneficial to save a large amount of water resources and reduce the production water cost; in addition, the device is provided with a backwashing filter in the circulating water path, which can effectively filter impurities, so that the problem of nozzle blockage caused by continuous accumulation of impurities in the circulating water is avoided, the dust removal effect is affected, and the working efficiency is reduced.

Claims

1. A dust removal device for a paper machine, characterized in that, The system includes a circulating separation tank (1), a backwash filter (2), and a water tank (3) to form a circulating water circuit. The separation tank (1) is connected to at least two sections of air duct, wherein the first air duct (4-1) is connected to the dust area of ​​the paper machine, and the second air duct (4-2) is connected to the exhaust fan (5).

2. The paper machine dust removal device according to claim 1, characterized in that, The separation tank (1), backwash filter (2) and water tank (3) are connected in a circulating manner through water pipes (6).

3. The paper machine dust removal device according to claim 1, characterized in that, The separation tank (1) is equipped with a spray nozzle, which is connected to a water pipe (6).

4. The paper machine dust removal device according to claim 1, characterized in that, The water tank (3) is equipped with a float valve.

5. The paper machine dust removal device according to claim 1, characterized in that, A flow meter (7) is installed on the circulating water line.

6. The paper machine dust removal device according to claim 1, characterized in that, A circulating water pump (8) is installed on the circulating water line.

7. The paper machine dust removal device according to claim 1, characterized in that, The circulating water circuit has multiple separation tanks (1).

8. The paper machine dust removal device according to claim 1, characterized in that, The water tank (3) is also connected to a water supply pipe (9), and a drain outlet (10) is provided at the bottom of the water tank.

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