Pulp pressurized screen for papermaking

Abstract

The utility model relates to the field of papermaking equipment, in particular to a pulp pressurized screen for papermaking, which comprises a shell, a driving pipe rotatably arranged at the lower end of the shell, a screen cylinder arranged in the shell, a conical lower end of the bottom surface of the screen cylinder, a limiting cone arranged in the screen cylinder, a stand column arranged at the upper end of the limiting cone, and a plurality of groups of rotor wings arranged on the side surface of the stand column, the driving pipe extends into the shell and is rotationally and hermetically connected with the shell, the upper end of the driving pipe is fixedly connected with the limiting cone, a plurality of feeding ports are formed in the upper end of the driving pipe, a lifting mechanism is arranged at the lower end of the shell, the driving pipe is rotationally connected with the lifting mechanism, and the lifting mechanism is provided with a driving mechanism connected with the driving pipe. And a drain valve is arranged at the lower end of the shell. The vibrating screen has the advantage that residual impurities in the screen cylinder can be cleaned conveniently.

Description

Technical Field

[0001] The utility model relates to the field of papermaking equipment, in particular to a pulp pressure screen for papermaking. Background Art

[0002] In order to ensure the quality of paper during papermaking, the pulp needs to be filtered. The equipment needed in this process is a pulp pressure screen. The basic structure of the pulp pressure screen includes a screen drum, a rotor and a drive mechanism. The pulp in the screen drum is filtered by the screen drum and then transported to the outside of the screen drum. The larger impurities contained in the pulp cannot pass through the screen drum and will remain in the screen drum. These impurities are not easy to clean in the screen drum. Therefore, it is particularly necessary to develop a pulp pressure screen for papermaking that is easy to clean the residual impurities in the screen drum. Summary of the invention

[0003] The utility model aims to provide a pulp pressure screen for papermaking, which has the advantage of being convenient for cleaning residual impurities in the screen drum.

[0004] The technical solutions adopted are as follows:

[0005] A pulp pressure screen for papermaking comprises a shell, a driving pipe is rotatably provided at the lower end of the shell, a screen drum is arranged in the shell, the lower end of the bottom surface of the screen drum is conical, a limiting cone is arranged in the screen drum, a column is arranged at the upper end of the limiting cone, and multiple groups of rotors are arranged on the side of the column, the driving pipe extends to the inside of the shell and is rotatably sealed with the shell, the upper end of the driving pipe is fixedly connected to the limiting cone, multiple feed ports are opened at the upper end of the driving pipe, a lifting mechanism is arranged at the lower end of the shell, the driving pipe is rotatably connected to the lifting mechanism, the lifting mechanism is provided with a driving mechanism connected to the driving pipe, and a drain valve is arranged at the lower end of the shell.

[0006] Preferably, a cover plate is disposed at the upper end of the shell, a water spray ring is disposed at the lower end of the cover plate, and a plurality of first telescopic mechanisms connected to the water spray ring are vertically disposed on the cover plate.

[0007] There are multiple nozzles inside the water spray ring.

[0008] The water spray ring is connected with a water supply hose, and a water supply mechanism connected with the water supply hose is arranged on the outer side of the shell.

[0009] Preferably, a baffle is provided at the bottom end of the shell, a guide cone plate is provided at the lower end surface of the screen drum, and the guide cone plate cover is provided above the baffle.

[0010] Preferably, the lifting mechanism comprises a mounting plate, and a plurality of second telescopic mechanisms extending vertically are connected to the lower end of the mounting plate.

[0011] Preferably, a bearing seat is provided on the mounting plate, and the drive tube is installed in the bearing seat.

[0012] Preferably, the driving mechanism comprises a driven gear, a driving gear and a driving motor, the driving motor is connected to the driving gear, the driven gear is fixedly arranged at the lower end of the driving tube, and the driven gear is meshed with the driving gear.

[0013] Compared with the prior art, the beneficial effects are:

[0014] 1. When the utility model is screening pulp, the driving mechanism drives the driving tube to rotate, thereby driving the limiting cone, the column and the rotor to rotate synchronously, so as to push the pulp in the screen drum to the side wall of the screen drum, and use the screen drum to filter the pulp. After the pulp in the screen drum is filtered, the lifting mechanism controls the driving tube, the column and the rotor to rise synchronously, and the remaining larger impurities and pulp enter the feed port from the gap between the limiting cone and the screen drum, and flow out along the driving tube, which has the advantage of being easy to clean impurities and pulp.

[0015] 2. The utility model utilizes the first telescopic mechanism to drive the water spray ring to move outside the screen drum, and utilizes the water supply mechanism, the water supply hose and each nozzle to perform flushing to clear the blocked part of the screen drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a pulp pressure screen for papermaking in the utility model.

[0017] Figure 2 yes Figure 1 The structural diagram at A in the middle,

[0018] Figure 3 This is a schematic diagram of the structure of a pulp pressure screen for papermaking in a state of removing impurities.

[0019] In the figure: 1. shell, 2. drive pipe, 3. screen drum, 4. limiting cone, 5. column, 6. rotor, 7. feed port, 8. mounting plate, 9. second telescopic mechanism, 101. driven gear, 102. drive gear, 103. drive motor, 11. drain valve, 12. enclosure, 13. guide cone plate, 14. cover plate, 15. water spray ring, 16. first telescopic mechanism, 17. nozzle, 18. water supply hose, 19. water supply mechanism. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with specific embodiments. Figures 1 to 3 As shown:

[0021] Embodiment 1: A pulp pressure screen for papermaking, comprising a shell 1, a driving tube 2 is rotatably provided at the lower end of the shell 1, the driving tube 2 extends vertically, a screen drum 3 is provided in the shell 1, the screen drum 3 is a prior art, and will not be described in detail here; the lower end of the bottom surface of the screen drum 3 is conical, a limiting cone 4 is provided in the screen drum 3, a column 5 is provided at the upper end of the limiting cone 4, and a plurality of groups of rotors 6 are provided on the side of the column 5, the driving tube 2 extends into the shell 1 and is rotatably sealed and connected with the shell 1,

[0022] The upper end of the driving tube 2 is fixedly connected to the limiting cone 4, and a plurality of feed ports 7 are provided at the upper end of the driving tube 2. A lifting mechanism is provided at the lower end of the shell 1. The driving tube 2 is rotatably connected to the lifting mechanism. The lifting mechanism is provided with a driving mechanism connected to the driving tube 2. The driving mechanism drives the driving tube 2 to rotate, and the lifting mechanism drives the driving tube 2 to rise and fall, thereby driving the driving tube 2, the column 5 and the rotor 6 to rise and fall synchronously. A drain valve 11 is provided at the lower end of the shell 1.

[0023] When pulp screening is performed, the driving mechanism drives the driving tube 2 to rotate, thereby driving the limiting cone 4, the column 5 and the rotor 6 to rotate synchronously, thereby pushing the pulp in the screen drum 3 to the side wall of the screen drum 3, and using the screen drum 3 to filter the pulp. After the pulp in the screen drum 3 is filtered, the lifting mechanism controls the driving tube 2, the column 5 and the rotor 6 to rise synchronously, and the remaining larger impurities and pulp enter the feed port 7 from the gap between the limiting cone 4 and the screen drum 3, and flow out along the driving tube 2 for easy cleaning.

[0024] Embodiment 2: A pulp pressure screen for papermaking, comprising a shell 1, a driving tube 2 is rotatably provided at the lower end of the shell 1, the driving tube 2 extends vertically, a screen drum 3 is provided in the shell 1, the screen drum 3 is a prior art, and will not be described in detail here; the lower end of the bottom surface of the screen drum 3 is conical, a limiting cone 4 is provided in the screen drum 3, a column 5 is provided at the upper end of the limiting cone 4, and a plurality of sets of rotors 6 are provided on the side of the column 5, the driving tube 2 extends into the shell 1 and is rotatably sealed and connected with the shell 1,

[0025] The upper end of the driving tube 2 is fixedly connected to the limiting cone 4. A plurality of feed ports 7 are provided at the upper end of the driving tube 2. A lifting mechanism is provided at the lower end of the shell 1. The lifting mechanism comprises a mounting plate 8. A plurality of second telescopic mechanisms 9 extending vertically are connected to the lower end of the mounting plate 8. The driving tube 2 is rotatably connected to the lifting mechanism. A bearing seat is provided on the mounting plate 8. The driving tube 2 is installed in the bearing seat.

[0026] The lifting mechanism is provided with a driving mechanism connected to the driving tube 2, the driving mechanism includes a driven gear 101, a driving gear 102 and a driving motor 103, the driving motor 103 is connected to the driving gear 102, the driven gear 101 is fixedly arranged at the lower end of the driving tube 2, the driven gear 101 is meshed with the driving gear 102, the driving mechanism drives the driving tube 2 to rotate, and the lifting mechanism drives the driving tube 2 to rise and fall, thereby driving the driving tube 2, the column 5 and the rotor 6 to rise and fall synchronously, and a drain valve 11 is provided at the lower end of the shell 1.

[0027] The bottom end of the housing 1 is provided with a baffle 12, and the lower end surface of the screen drum 3 is provided with a guide cone plate 13, which is covered above the baffle 12. The guide cone plate 13 and the baffle 12 guide the pulp.

[0028] A cover plate 14 is provided at the upper end of the shell 1, a water spray ring 15 is provided at the lower end of the cover plate 14, a plurality of first telescopic mechanisms 16 connected to the water spray ring 15 are vertically provided on the cover plate 14, a plurality of nozzles 17 are provided inside the water spray ring 15, the water spray ring 15 is connected to a water supply hose 18, a water supply mechanism 19 connected to the water supply hose 18 is provided outside the shell 1, the first telescopic mechanism 16 drives the water spray ring 15 to move outside the screen drum 3, and the water supply mechanism 19, the water supply hose 18 and the nozzles 17 are used for flushing to clear the blocked parts of the screen drum 3.

[0029] The specific working process is as follows: when screening the pulp, the driving mechanism drives the driving tube 2 to rotate, thereby driving the limiting cone 4, the column 5 and the rotor 6 to rotate synchronously, thereby pushing the pulp in the screen drum 3 to the side wall of the screen drum 3, and using the screen drum 3 to filter the pulp. After the pulp in the screen drum 3 is filtered, the lifting mechanism controls the driving tube 2, the column 5 and the rotor 6 to rise synchronously, and the remaining larger impurities and pulp enter the feed port 7 from the gap between the limiting cone 4 and the screen drum 3, and flow out along the driving tube 2 for easy cleaning. When the impurities and pulp flow out from the driving tube 2, the first telescopic mechanism 16 drives the water spray ring 15 to move on the outside of the screen drum 3, and uses the water supply mechanism 19, the water supply hose 18 and each nozzle 17 to flush and clear the blocked parts of the screen drum 3.

[0030] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A pulp pressure screen for papermaking, characterized in that: It includes a shell, a driving pipe is rotatably provided at the lower end of the shell, a screen drum is provided in the shell, the lower end of the bottom surface of the screen drum is conical, a limiting cone is provided in the screen drum, a column is provided at the upper end of the limiting cone, and multiple groups of rotors are provided on the side of the column. The driving pipe extends to the interior of the shell and is rotatably sealed with the shell, the upper end of the driving pipe is fixedly connected to the limiting cone, multiple feed ports are opened at the upper end of the driving pipe, a lifting mechanism is provided at the lower end of the shell, the driving pipe is rotatably connected to the lifting mechanism, the lifting mechanism is provided with a driving mechanism connected to the driving pipe, and a drain valve is provided at the lower end of the shell.

2. A pulp pressure screen for papermaking as claimed in claim 1, characterized in that: A cover plate is provided at the upper end of the shell, a water spray ring is provided at the lower end of the cover plate, a plurality of first telescopic mechanisms connected to the water spray ring are vertically provided on the cover plate, a plurality of nozzles are provided on the inner side of the water spray ring, the water spray ring is connected to a water supply hose, and a water supply mechanism connected to the water supply hose is provided on the outer side of the shell.

3. A pulp pressure screen for papermaking as claimed in claim 1, characterized in that: The bottom end of the shell is provided with a baffle, the lower end surface of the screen drum is provided with a guide cone plate, and the guide cone plate cover is arranged above the baffle.

4. A pulp pressure screen for papermaking as claimed in claim 1, characterized in that: The lifting mechanism comprises a mounting plate, and a plurality of second telescopic mechanisms extending vertically are connected to the lower end of the mounting plate.

5. A pulp pressure screen for papermaking as claimed in claim 4, characterized in that: A bearing seat is arranged on the mounting plate, and the driving pipe is installed in the bearing seat.

6. A pulp pressure screen for papermaking as claimed in claim 1, characterized in that: The driving mechanism comprises a driven gear, a driving gear and a driving motor. The driving motor is connected to the driving gear. The driven gear is fixedly arranged at the lower end of the driving tube, and the driven gear is meshed with the driving gear.

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