Pressure screen for carbon-free paper coating machine

Abstract

The utility model discloses a pressure screen for a carbon-free paper coating machine, which comprises an outer shell, an upper sealing cover in bolted connection with the upper end of the outer shell, a screen filter screen rotatably mounted on the inner side of the outer shell, a plurality of rotor wing plates fixedly mounted on the circumference of the inner side of the screen filter screen in an array manner, and a driving motor fixedly mounted at the upper end of the upper sealing cover, the output end of the driving motor is fixedly connected to the rotor wing plate, two separation rings are fixedly installed on the inner side of the outer shell, the screen is rotationally installed on the separation rings, a feeding port and a discharging port are fixedly formed in the outer shell, a slag discharging port is formed in the lower end of the outer shell, and a plurality of first spray heads are fixedly installed in the outer shell and located between the two separation rings. And the first nozzle is connected with a water inlet penetrating through the outer shell. After the screening device is used, the rotating screening and filtering net is automatically washed through the first spray head, impurities attached to the screening and filtering net are washed, and cleaning and maintaining work on the screening and filtering net is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of pressure screens and relates to a pressure screen for a carbonless paper coating machine. Background Art

[0002] Carbonless paper coating machine is a kind of equipment used to apply coating on the surface of carbonless paper. In order to improve the quality and uniformity of coating, the raw materials will be filtered through a pressure screen before coating to reduce impurities and bubbles. The pressure screen usually rotates the raw materials entering the pressure screen through the rotating wing plate, and then forms a pressure difference on both sides of the cylindrical screen, so that the raw materials that meet the standards flow out through the screen, and the impurities sink and are discharged.

[0003] The pressure screen improves the filtering effect by the pressure generated by rotation. At the same time, impurities are easily embedded in the mesh of the screen through pressure, which requires frequent cleaning and is more troublesome. Utility Model Content

[0004] In view of the above problems, the utility model proposes a pressure screen for a carbonless paper coating machine, which well solves the problems in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A pressure screen for a carbonless paper coating machine, comprising:

[0007] An outer shell, wherein the upper side of the outer shell is cylindrical and the lower side is conical;

[0008] An upper cover, the upper cover being bolted to the upper end of the outer shell;

[0009] A screen filter, the screen filter being rotatably mounted inside the outer shell;

[0010] A plurality of rotor plates are fixedly mounted in a circular array on the inner side of the screen;

[0011] A driving motor, wherein the driving motor is fixedly mounted on the upper end of the upper cover, and an output end of the driving motor is fixedly connected to the rotor plate;

[0012] Separation rings, two of which are fixedly mounted on the inner side of the outer shell, and the screen is rotatably mounted on the separation rings;

[0013] A feed inlet and a discharge inlet, wherein the feed inlet passes through the outer shell and is located above the upper end of the screen, and the discharge inlet passes through the outer shell and is located at the upper end of the separator ring at the lower side;

[0014] A slag discharge port, the slag discharge port being opened at the lower end of the outer shell;

[0015] A first nozzle, wherein a plurality of the first nozzles are installed in a linear array along the axial direction of the outer shell inside the outer shell, and the first nozzles are all located between the two separation rings;

[0016] a water inlet, the water inlet passing through the outer shell and connected to the first nozzle;

[0017] Among them, the feed port, discharge port, slag discharge port and water inlet are all equipped with control valves.

[0018] Optionally, the sieve screen comprises a filter screen, and the filter screen is installed at a position between the two separation rings.

[0019] Optionally, a rotor frame is installed at the output end of the driving motor, the rotor plate is fixedly installed on the rotor frame, and a rising spiral is fixedly installed on the part of the rotor frame below the separation ring on the lower side.

[0020] Optionally, the sieve filter comprises a filter frame, a slot is fixedly installed on the inner side of the filter frame, and the rotor plate is plugged and installed in the slot.

[0021] Optionally, the outer shell is fixedly installed with a return liquid pipe that passes through the outer shell, and a plurality of second nozzles are installed in an axial linear array inside the outer shell. The first end of the return liquid pipe is connected to the second nozzle, and the second end is connected to the discharge port. The return liquid pipe is installed with a booster pump.

[0022] Optionally, a one-way valve is installed at the discharge port located on the side of the liquid return pipe away from the outer shell.

[0023] Optionally, the control valve is a solenoid valve.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. After use, the first nozzle automatically flushes the rotating screen to flush the impurities attached to the screen, reducing the cleaning and maintenance work of the screen;

[0026] 2. After the raw materials enter the screen, part of them will fall into the bottom of the screen and the outer shell. The filter is located between the separation ring. By setting the rising spiral, the raw materials at the bottom center of the screen can be raised through the rising spiral to enter the area where the filter is located to complete the filtration. At the same time, the circulation of the filtered raw materials in the screen can be increased, and multiple filtrations can be performed to improve the filtration effect.

[0027] 3. During the filtering process, in order to reduce the impact on the raw material concentration, the first nozzle part may not be convenient to use. By setting the second nozzle part, the second nozzle sprays the filtered raw material, and the raw material is used to flush the screen to reduce the blockage of the screen during the filtering process. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 yes Figure 1 Enlarged schematic diagram of part A.

[0030] Reference numerals: 1, outer shell; 11, separation ring; 12, feed port; 13, discharge port; 14, slag discharge port; 15, water inlet; 16, liquid return pipe;

[0031] 2. Upper cover;

[0032] 3. Screen filter; 31. Rotor plate; 32. Filter; 33. Rotor frame; 34. Filter frame; 341. Slot;

[0033] 21. Driving motor;

[0034] 41. First nozzle; 42. Second nozzle. DETAILED DESCRIPTION

[0035] 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 in 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.

[0036] See also Figure 1 , which is a pressure screen for a carbonless paper coating machine disclosed in an embodiment of the utility model, comprises an outer shell 1, the upper side of the outer shell 1 is cylindrical, the lower side is conical, the upper end of the outer shell 1 is bolted with an upper cover 2, a screen filter 3 is rotatably installed inside the outer shell 1, a plurality of rotor plates 31 are fixedly installed in a circumferential array inside the screen filter 3, a driving motor 21 is fixedly installed on the upper end of the upper cover 2, the output end of the driving motor 21 is fixedly connected to the rotor plate 31, two separation rings 11 are fixedly installed inside the outer shell 1, the screen filter 3 is rotatably installed on the separation ring 11, and the outer shell 1 is fixedly installed with a feed port 12 The feed port 12 and the discharge port 13 pass through the outer shell 1, the feed port 12 is located above the upper end of the screen 3, the discharge port 13 is located at the upper end of the lower separation ring 11, and a slag discharge port 14 is opened at the lower end of the outer shell 1. A plurality of first nozzles 41 are fixedly installed in the outer shell 1, and the plurality of first nozzles 41 are installed on the inner side of the outer shell 1 in an axial linear array along the outer shell 1. The first nozzles 41 are all located between the two separation rings 11, and the first nozzles 41 are connected with a water inlet 15 that passes through the outer shell 1. The feed port 12, the discharge port 13, the slag discharge port 14 and the water inlet 15 are all equipped with control valves.

[0037] Specifically, the screen 3 is connected to the rotor plate 31 and the driving motor 21, so that the screen 3 rotates with the rotor plate 31, and a first nozzle 41 is installed on the inner side of the outer shell 1, and the rotating screen 3 is flushed by the first nozzle 41 to reduce the blockage of the screen 3.

[0038] In this way, after use, the rotating screen 3 is automatically flushed through the first nozzle 41 to flush the impurities attached to the screen 3, thereby reducing the cleaning and maintenance work on the screen 3.

[0039] In some feasible embodiments, the upper side of the outer shell 1 is cylindrical and the lower side is conical. For easy placement, a support leg is provided at the bottom of the outer shell 1. The separation ring 11 is annular and the outer side of the separation ring 11 is fixedly mounted on the outer shell 1. Figure 1 and Figure 2 , a bearing is installed inside, the screen 3 is installed on the inner ring of the bearing, the area between the two separation rings 11 and located outside the screen 3 is the area of ​​the raw material after screening, the feed port 12 is located above the upper end of the screen 3, and the discharge port 13 is located at the upper end of the lower separation ring 11. The raw material enters the screen 3 from the upper end of the screen 3 and is discharged from the discharge port 13. The rotor plate 31 is a rectangular plate. The raw material is stirred by the rotor plate 31, so that the raw material rotates and passes through the screen 3 under the action of centrifugal force. A slag discharge port 14 is provided at the lower end of the outer shell 1. After the filtration is completed, impurities are discharged through the slag discharge port 14;

[0040] The first nozzle 41 is a water spray head, and multiple first nozzles 41 are connected by a water pipe. The water inlet 15 is connected to the water pipe to flush the screen 3 with high-pressure water flow. Impurities are flushed from the inside to the outside by centrifugal force, while the first nozzle 41 is flushed from the outside to the inside, which makes it easier to flush the impurities from the screen 3. In order to facilitate the control of the feed port 12, the discharge port 13, the slag discharge port 14 and the water inlet 15 during cleaning, the control valve is set to be a solenoid valve for easy automatic control.

[0041] As a specific implementation of a pressure screen for a carbonless paper coating machine provided in the application, the screen filter 3 includes a filter screen 32 , and the filter screen 32 is installed between two separation rings 11 .

[0042] Generally speaking, the area between the separation rings 11 is the area where the filtered raw materials are discharged. The filter net 32 ​​is arranged in the area between the separation rings 11 to facilitate filtering.

[0043] Furthermore, a rotor frame 33 is installed at the output end of the driving motor 21, the rotor plate 31 is fixedly installed on the rotor frame 33, and a rising spiral is fixedly installed on the portion of the rotor frame 33 below the lower separation ring 11.

[0044] In combination with the specific usage scenario, after the raw materials enter the screen filter 3, part of them will fall into the bottom of the screen filter 3 and the outer shell 1, and the filter 32 is located between the separating rings 11. By setting an ascending spiral, the raw materials at the bottom center of the screen filter 3 can rise through the ascending spiral into the area where the filter 32 is located to complete the filtration. At the same time, the circulation of the filtered raw materials in the screen filter 3 can also be increased, and multiple filtrations can be performed to improve the filtration effect.

[0045] In some feasible embodiments, the rotor frame 33 includes a cylindrical rod, a connecting rod is installed in a circular array on the side of the cylindrical rod, the connecting rod is fixedly installed with the rotor plate 31, the rising spiral is a rectangular pipe spirally installed on the lower end of the cylindrical rod, the lower end of the cylindrical rod is rotatably connected to the lower end of the screen 3, a ring is installed at the lower end of the screen 3, the ring is fixedly connected to the lower end of the screen 3 through the rectangular support rods of the circular array, the cylindrical rod is plug-connected to the ring, and the upper end of the cylindrical rod is connected to the output end of the drive motor 21. For the convenience of installation and disassembly, the output end of the drive motor 21 is plug-connected to the cylindrical rod key connection.

[0046] Furthermore, the sieve filter 3 comprises a filter frame 34 , a slot 341 is fixedly installed inside the filter frame 34 , and the rotor plate 31 is plugged and installed in the slot 341 .

[0047] It should be understood that by providing the plug-in installed rotor plate 31, the filter frame 34 is partially detachable, which facilitates further cleaning and maintenance of the filter screen 3 after disassembly.

[0048] In some feasible embodiments, the filter frame 34 includes at least two circular ring frames, which are connected by rectangular connecting rods in a circular array. The slots 341 are opened on the rectangular connecting rods. The circular ring frames are installed corresponding to the separating rings 11. A conical cylinder is installed on the lower side of the filter frame 34, and the bottom of the conical cylinder is rotatably connected to the bottom of the outer shell 1.

[0049] As another specific embodiment of a pressure screen for a carbonless paper coating machine provided in the application, the outer shell 1 is fixedly installed with a return pipe 16 that penetrates the outer shell 1, and a plurality of second nozzles 42 are installed in an axial linear array on the inner side of the outer shell 1. The first end of the return pipe 16 is connected to the second nozzle 42, and the second end is connected to the discharge port 13. The return pipe 16 is installed with a booster pump.

[0050] In combination with specific usage scenarios, during the filtration process, in order to reduce the impact on the raw material concentration, the first nozzle 41 may be inconvenient to use. By setting the second nozzle 42, the second nozzle 42 sprays the filtered raw material, and the raw material is used to flush the screen 3, thereby reducing the blockage of the screen 3 during the filtration process.

[0051] In some feasible ways, the opening interval of the second nozzle 42 can be set according to the specific usage of the raw material. In order to reduce the impact of the second nozzle 42 on the flow of the discharge port 13, the second nozzle 42 can also be connected to the outer shell 1.

[0052] Furthermore, a one-way valve is installed at the discharge port 13 located on the side of the liquid return pipe 16 away from the outer shell 1 .

[0053] It should be understood that by providing a one-way valve, the possibility of the raw material in the discharge port 13 flowing back into the liquid return pipe 16 is reduced.

[0054] In some feasible embodiments, the second nozzle 42 has the same structure as the first nozzle 41 .

[0055] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure screen for a carbonless paper coating machine, characterized in that: include: An outer shell, wherein the upper side of the outer shell is cylindrical and the lower side is conical; An upper cover, the upper cover being bolted to the upper end of the outer shell; A screen filter, the screen filter being rotatably mounted inside the outer shell; A plurality of rotor plates are fixedly mounted in a circular array on the inner side of the screen; A driving motor, wherein the driving motor is fixedly mounted on the upper end of the upper cover, and an output end of the driving motor is fixedly connected to the rotor plate; Separation rings, two of which are fixedly mounted on the inner side of the outer shell, and the screen is rotatably mounted on the separation rings; A feed inlet and a discharge inlet, wherein the feed inlet passes through the outer shell and is located above the upper end of the screen, and the discharge inlet passes through the outer shell and is located at the upper end of the separator ring at the lower side; A slag discharge port, the slag discharge port being opened at the lower end of the outer shell; A first nozzle, wherein a plurality of the first nozzles are installed in a linear array along the axial direction of the outer shell inside the outer shell, and the first nozzles are all located between the two separation rings; a water inlet, the water inlet passing through the outer shell and connected to the first nozzle; Among them, the feed port, discharge port, slag discharge port and water inlet are all equipped with control valves.

2. A pressure screen for a carbonless paper coating machine according to claim 1, characterized in that: The sieve filter comprises a filter screen, and the filter screen is installed at a position between the two separation rings.

3. A pressure screen for a carbonless paper coating machine according to claim 2, characterized in that: The output end of the driving motor is equipped with a rotor frame, the rotor plate is fixedly installed on the rotor frame, and the part of the rotor frame below the separation ring on the lower side is fixedly equipped with an ascending spiral.

4. A pressure screen for a carbonless paper coating machine according to claim 2, characterized in that: The sieve filter comprises a filter frame, a slot is fixedly installed on the inner side of the filter frame, and the rotor plate is plugged and installed in the slot.

5. The pressure screen for a carbonless paper coating machine according to claim 1, characterized in that: The outer shell is fixedly provided with a liquid return pipe which passes through the outer shell, and a plurality of second nozzles are installed in an axial linear array inside the outer shell. The first end of the liquid return pipe is connected to the second nozzle, and the second end is connected to the discharge port. The liquid return pipe is provided with a booster pump.

6. A pressure screen for a carbonless paper coating machine according to claim 5, characterized in that: A one-way valve is installed at the discharge port located at the side of the liquid return pipe away from the outer shell.

7. The pressure screen for a carbonless paper coating machine according to claim 1, characterized in that: The control valve is a solenoid valve.

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