Papermaking black liquid filtering equipment

Abstract

The papermaking black liquid filtering equipment comprises a filtering box, two connecting sliding grooves are symmetrically formed in the top end of the interior of the filtering box along the center, first hydraulic lifting rods are detachably installed at the bottom ends of the interiors of the connecting sliding grooves, and the interior of the filtering box is connected with a filtering net through the first hydraulic lifting rods; connecting plates are fixedly connected to the two side walls of the filter screen, four mounting plates are fixedly connected to the upper surface of the filter box in a rectangular array, a second hydraulic lifting rod is detachably mounted on one side of the lower surface of each mounting plate, and a cleaning assembly is connected to the bottom end of each second hydraulic lifting rod. According to the scheme, the papermaking black liquid filtering equipment is provided with the cleaning assembly, so that the inner wall of the filtering box is cleaned, and the problems that impurities in the black liquid can be adhered to the inner wall of the filtering net, once the filtering net is not cleaned, the aesthetic degree of the equipment is influenced, and the next work of the equipment is also influenced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking, and more specifically, to a papermaking black liquor filtering device. Background Art

[0002] Papermaking, as the name suggests, is the technology of making paper; during the papermaking process, impurities in the black liquor need to be filtered through filtering equipment.

[0003] For example, a papermaking black liquor filtering device disclosed in CN214033153U has the following technical solutions: it includes a shell, a tripod, a feed port, a discharge port, an exhaust port, a slag discharge port and a filter assembly; a cavity is provided in the shell, the lower end of the shell is fixedly connected to the upper end of the tripod, the feed port is arranged on the side surface of the lower end of the shell, the discharge port is arranged at the center of the bottom end of the shell, the exhaust port is arranged at the top of the shell, the slag discharge port is arranged on the side surface of the lower end of the shell, and the filter assembly is arranged inside the shell; the filter assembly includes a stirring rod, an air permeable plate and a filter screen, and the stirring rod is provided with multiple, the upper ends of multiple stirring rods are connected to the air permeable plate, the lower ends of multiple stirring rods are connected to the filter screen, the air permeable plate is arranged at the upper end of the shell, and the filter screen is arranged at the lower end of the shell; it mainly filters the black liquor during the rotation by setting a rotating filter assembly, and rolls the residue to the slag discharge port for discharge and recovery during rotation, has a simple structure and good filtering effect.

[0004] The above-mentioned papermaking black liquor filtering equipment still has certain shortcomings: since the impurity particles in the black liquor vary in size, once the impurity particles clog the filter screen, the filtration time will be increased, thereby reducing the filtration efficiency of the equipment. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a papermaking black liquor filtering device to solve the problems existing in the prior art.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a papermaking black liquor filtering device, including a filter box, two connecting slides are symmetrically provided at the top of the interior of the filter box along the center, and the bottom end of the interior of the connecting slide is detachably installed with a first hydraulic lifting rod, the interior of the filter box is connected to a filter screen through the first hydraulic lifting rod, and the two side walls of the filter screen are fixedly connected with connecting plates, the upper surface of the filter box is fixedly connected with four mounting plates in a rectangular array, and a second hydraulic lifting rod is detachably installed on one side of the lower surface of the mounting plate, and the bottom end of the second hydraulic lifting rod is connected to a cleaning assembly.

[0007] Wherein, a sealing ring is fixedly connected to the middle of the bottom end of the front face of the filter box, and a liquid outlet pipe is connected to the middle of the bottom end of the front face of the filter box through the sealing ring.

[0008] The top end of the first hydraulic lifting rod is connected to the lower surface of the connecting plate, the surface of the connecting plate is adapted to the interior of the connecting chute, and the depth of the connecting chute is less than the depth of the filter box.

[0009] The cleaning assembly includes a stabilizing plate, a centrifugal pump and a connecting hose. The upper surface of the stabilizing plate is fixedly connected to the centrifugal pump, and the input end of the centrifugal pump is connected to the connecting hose.

[0010] One end of the connecting hose is connected to a rectangular connecting pipe, and the lower surface of the rectangular connecting pipe is connected to a plurality of cleaning heads in a rectangular array.

[0011] The upper surface of the rectangular connecting pipe is connected to the bottom end of the second hydraulic lifting rod, and the surface of the rectangular connecting pipe is adapted to the interior of the filter box.

[0012] The output end of the centrifugal pump is symmetrically connected to two connecting elbows along the center, one end of the connecting elbow is connected to a liquid storage tank, and the interior of the liquid storage tank is filled with liquid.

[0013] The beneficial effects of the above technical solution of the utility model are as follows:

[0014] 1. In the above solution, the papermaking black liquor filtering equipment is provided with a connecting chute, a first hydraulic lifting rod, and a connecting plate to clean the clogged filter screen, thereby avoiding the problem that due to the different sizes of impurity particles in the black liquor, once the impurity particles clog the filter screen, it will increase the filtration time and thus reduce the filtration efficiency of the equipment;

[0015] 2. In the above scheme, the papermaking black liquor filtering equipment is provided with a cleaning component to clean the inner wall of the filter box to prevent impurities in the black liquor from adhering to the inner wall of the filter screen. If it is not cleaned, it will affect the appearance of the equipment and will also affect the next operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of the filter box and the mounting plate of the utility model;

[0018] Figure 3 This is a schematic diagram of the assembly of the filter box and filter screen of the utility model;

[0019] Figure 4 This is a schematic structural diagram of the cleaning component of the present utility model.

[0020] [reference numerals]

[0021] 1. Filter box; 2. Connecting chute; 3. First hydraulic lifting rod; 4. Filter screen; 5. Connecting plate; 6. Mounting plate; 7. Second hydraulic lifting rod; 8. Cleaning assembly; 9. Sealing ring; 10. Liquid outlet pipe; 81. Stabilizing plate; 82. Centrifugal pump; 83. Connecting hose; 84. Rectangular connecting pipe; 85. Cleaning head; 86. Connecting elbow; 87. Liquid storage tank. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1:

[0024] See also Figure 1-4 , a papermaking black liquor filtering device, including a filter box 1, two connecting chutes 2 are symmetrically provided at the top of the interior of the filter box 1 along the center, a first hydraulic lifting rod 3 is detachably installed at the bottom end of the interior of the connecting chute 2, the interior of the filter box 1 is connected to a filter screen 4 through the first hydraulic lifting rod 3, and both side walls of the filter screen 4 are fixedly connected to a connecting plate 5, the upper surface of the filter box 1 is fixedly connected to four mounting plates 6 in a rectangular array, a second hydraulic lifting rod 7 is detachably installed on one side of the lower surface of the mounting plate 6, and a cleaning component 8 is connected to the bottom end of the second hydraulic lifting rod 7;

[0025] The middle part of the bottom end of the front face of the filter box 1 is fixedly connected with a sealing ring 9, and the middle part of the bottom end of the front face of the filter box 1 is connected with a liquid outlet pipe 10 through the sealing ring 9. The top end of the first hydraulic lifting rod 3 is connected to the lower surface of the connecting plate 5, and the surface of the connecting plate 5 is adapted to the inside of the connecting chute 2. The depth of the connecting chute 2 is less than the depth of the filter box 1. The cleaning assembly 8 includes a stabilizing plate 81, a centrifugal pump 82 and a connecting hose 83. The upper surface of the stabilizing plate 81 is fixedly connected with a centrifugal pump 82, and the centrifugal pump 83 is fixedly connected to the upper surface of the stabilizing plate 81. 2 is connected to the input end of the connecting hose 83, one end of the connecting hose 83 is connected to a rectangular connecting pipe 84, the lower surface of the rectangular connecting pipe 84 is connected to a plurality of cleaning heads 85 in a rectangular array, the upper surface of the rectangular connecting pipe 84 is connected to the bottom end of the second hydraulic lifting rod 7, the surface of the rectangular connecting pipe 84 is adapted to the interior of the filter box 1, the output end of the centrifugal pump 82 is connected to two connecting elbows 86 symmetrically along the center, one end of the connecting elbow 86 is connected to a liquid storage tank 87, the interior of the liquid storage tank 87 is filled with liquid.

[0026] Benefits: The provision of the mounting plate 6 and the second hydraulic lifting rod 7 facilitates the lifting and lowering of the filter screen 4, thereby enhancing the practicability of the device.

[0027] The working process of this utility model is as follows:

[0028] When the papermaking black liquor filtering equipment is working, in order to improve the filtering efficiency of the device, a connecting slide 2, a first hydraulic lifting rod 3 and a connecting plate 5 are provided. When the filter screen 4 is clogged with impurities, the first hydraulic lifting rod 3 and the second hydraulic lifting rod 7 are started, so that the first hydraulic lifting rod 3 drives the connecting plate 5 to move upward, and the second hydraulic lifting rod 7 drives the rectangular connecting pipe 84 to move upward. Because the side wall of the filter screen 4 is connected to the side wall of the connecting plate 5, the movement of the connecting plate 5 can drive the filter screen 4 to move upward until the filter screen 4 is moved out of the interior of the filter box 1. At this time, the clogged filter screen 4 can be cleaned. Because the first hydraulic lifting rod 3 has the function of automatic lifting, it can control the height of the filter screen 4, thereby facilitating the cleaning of the clogged filter screen 4 and saving working time.

[0029] In the above scheme, when the papermaking black liquor filtering equipment is working, in order to improve the aesthetics of the filtering equipment, a cleaning component 8 is provided. After the papermaking black liquor filtration is completed, the centrifugal pump 82 inside the cleaning component 8 is started to make it work. Then the centrifugal pump 82 will extract the liquid stored in the liquid storage tank 87 through the connecting elbow 86, and then transport it to the inside of the rectangular connecting pipe 84 through the connecting hose 83. Finally, the cleaning head 85 will spray the liquid to clean the inside of the filter box 1, thereby preventing impurities from adhering to the inner wall of the filter box 1 and improving the aesthetics of the equipment.

[0030] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0031] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0032] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A papermaking black liquor filtering device, comprising a filter box (1), characterized in that: The top of the filter box (1) is provided with two connecting chutes (2) symmetrically along the center, and the bottom of the connecting chutes (2) is detachably mounted with a first hydraulic lifting rod (3), and the inside of the filter box (1) is connected to a filter screen (4) through the first hydraulic lifting rod (3), and both side walls of the filter screen (4) are fixedly connected with connecting plates (5), and the upper surface of the filter box (1) is fixedly connected with four mounting plates (6) in a rectangular array, and a second hydraulic lifting rod (7) is detachably mounted on one side of the lower surface of the mounting plate (6), and the bottom end of the second hydraulic lifting rod (7) is connected with a cleaning assembly (8).

2. The papermaking black liquor filtering equipment according to claim 1, characterized in that: A sealing ring (9) is fixedly connected to the middle of the bottom end of the front face of the filter box (1), and a liquid outlet pipe (10) is connected to the middle of the bottom end of the front face of the filter box (1) through the sealing ring (9).

3. The papermaking black liquor filtering equipment according to claim 1, characterized in that: The top end of the first hydraulic lifting rod (3) is connected to the lower surface of the connecting plate (5), the surface of the connecting plate (5) is adapted to the interior of the connecting chute (2), and the depth of the connecting chute (2) is less than the depth of the filter box (1).

4. The papermaking black liquor filtering equipment according to claim 1, characterized in that: The cleaning assembly (8) comprises a stabilizing plate (81), a centrifugal pump (82) and a connecting hose (83); the upper surface of the stabilizing plate (81) is fixedly connected to the centrifugal pump (82); the input end of the centrifugal pump (82) is connected to the connecting hose (83).

5. The papermaking black liquor filtering equipment according to claim 4, characterized in that: One end of the connecting hose (83) is connected to a rectangular connecting pipe (84), and the lower surface of the rectangular connecting pipe (84) is connected to a plurality of cleaning heads (85) in a rectangular array.

6. The papermaking black liquor filtering equipment according to claim 5, characterized in that: The upper surface of the rectangular connecting pipe (84) is connected to the bottom end of the second hydraulic lifting rod (7), and the surface of the rectangular connecting pipe (84) is adapted to the interior of the filter box (1).

7. The papermaking black liquor filtering equipment according to claim 4, characterized in that: The output end of the centrifugal pump (82) is symmetrically connected to two connecting elbows (86) along the center, and one end of the connecting elbow (86) is connected to a liquid storage tank (87), and the interior of the liquid storage tank (87) is filled with liquid.

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