Filter for pulp discharge of pulp barrel

Abstract

The filter comprises a filter body and a filter assembly, the filter body is fixedly connected with the outlet end of the slurry barrel through a flange plate, the filter body is provided with a main channel, the main channel is communicated with the outlet end of the slurry barrel, and the filter body is provided with a slurry return channel. The main channel and the slurry return channel are communicated through a slurry return through hole, the filter body is provided with a slurry outlet and a slurry return port, the slurry outlet is communicated with the main channel, the filter assembly is installed at the slurry outlet, the slurry return port is communicated with the slurry return channel, the filter body is provided with a channel switching mechanism, and the channel switching mechanism is used for controlling one of the slurry return through hole and the slurry outlet to be opened. The filtering assembly has the advantage of being convenient to disassemble and assemble, and the primary pulp can be kept in a flowing state all the time when the filtering assembly is disassembled and assembled, so that the problem that the primary pulp is condensed and blocks a pipe is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for dye production, and more specifically, to a filter for discharging pulp from a pulp barrel. Background Art

[0002] Pulp making is an important production step in the preparation process of disperse dyes. Pulp making is a process of adding water to dye raw materials and then fully stirring to make dye slurry. The initially made dye raw pulp has a large viscosity and uneven particles. Therefore, the output dye raw pulp needs to be filtered. Filtration can ensure the particle uniformity of the dye raw pulp to meet the subsequent production requirements. The current method is to directly install a filter screen at the position of the pulp discharging pipeline of the pulp barrel to filter the output raw pulp. However, the filter screen will be blocked after long-term use. The blockage will affect the output of the raw pulp. At this time, it is necessary to disassemble the filter screen for cleaning. In the existing structure, before disassembling the filter screen, the pulp discharging pipeline needs to be closed with a valve first. Due to the large viscosity of the dye raw pulp, directly closing the pipeline can prevent the raw pulp from leaking, but it also restricts the flow of the raw pulp in the pipeline. During the period of disassembling and replacing the filter screen, the raw pulp in the pipeline will gradually coagulate, causing new problems such as pipeline blockage. Therefore, enterprises have an urgent need for improvement in the filtering and discharging structure, and this case is born from this. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the above-mentioned requirements of the existing technology, and provide a filter for discharging pulp from a pulp barrel. The filter of the utility model is designed with a dual-channel structure of a main channel and a pulp return channel. When discharging pulp normally, the pulp return channel is closed. When disassembling and replacing the filter component, the pulp return channel is opened and enabled, and the raw pulp only flows away from the pulp return channel. The filter of the utility model can not only meet the requirement of disassembling and replacing the filter component, but also keep the raw pulp in a flowing state all the time, and solve the problem of its coagulation and pipeline blockage.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A filter for discharging pulp from a pulp bucket, which is installed at the outlet end of the pulp bucket, includes a filter body and a filtering component. One end of the filter body is connected with a flange plate, and the filter body is fixedly connected with the outlet end of the pulp bucket through the flange plate. The filter body is provided with a main channel, one end of the main channel facing the flange plate is open, and the main channel is communicated with the outlet end of the pulp bucket. The filter body is provided with a pulp return channel, and a pulp return through hole is arranged between the main channel and the pulp return channel. The main channel and the pulp return channel are communicated through the pulp return through hole. The filter body is provided with a pulp outlet and a pulp return port. The pulp outlet is communicated with the main channel, the filtering component is installed at the pulp outlet, the pulp return port is communicated with the pulp return channel, and a pulp return joint is installed at the pulp return port. The filter body is installed with a channel switching mechanism, and only one of the pulp return through hole and the pulp outlet can be opened, and the channel switching mechanism is used to control the selective opening of the pulp return through hole and the pulp outlet.

[0006] Further, the filtering component includes a first pulp outlet pipe joint and a second pulp outlet pipe joint. The pulp outlet is a vertical through hole, the upper end of the pulp outlet is communicated with the main channel, the first pulp outlet pipe joint is threadedly installed at the lower end of the pulp outlet, the first pulp outlet pipe joint and the second pulp outlet pipe joint are connected by flange bolts, a mesh cavity is formed between the first pulp outlet pipe joint and the second pulp outlet pipe joint, and a filter screen is installed in the mesh cavity.

[0007] Further, the pulp return through hole and the pulp outlet are arranged in an up-and-down corresponding manner. The channel switching mechanism includes a push cylinder and a sealing disc. The sealing disc is connected to the piston rod end of the push cylinder. The sealing disc is arranged in the main channel. The telescopic movement of the piston rod of the push cylinder can drive the sealing disc to move up and down. When the sealing disc rises, it can fit with the pulp return through hole, and when the sealing disc descends, it can fit with the pulp outlet.

[0008] Further, the diameter of the sealing disc is larger than the apertures of the pulp return through hole and the pulp outlet.

[0009] Further, the filter body is provided with a functional through hole, the functional through hole is communicated with the pulp return through hole, and a sealing plug or a high-pressure water pipe joint can be threadedly and sealedly installed in the functional through hole. The high-pressure water pipe joint is only installed when cleaning the pulp return through hole.

[0010] Further, an end face sealing ring is installed outside the open end of the main channel.

[0011] Further, a pulp return pump is installed outside the pulp bucket. The inlet end pipeline of the pulp return pump is connected to the pulp return joint, and the outlet end pipeline of the pulp return pump extends into the pulp bucket.

[0012] The beneficial effects of the present utility model are:

[0013] 1. The utility model is designed with a dual-channel structure inside the filter body, and a channel switching mechanism is used to switch and connect the main channel and the return slurry channel. During normal slurry discharging operation, the main channel and the return slurry channel are not connected, and the raw slurry is filtered and output by the filter assembly. When it is necessary to clean and replace the filter assembly, the main channel and the return slurry channel are switched to be connected through the channel switching mechanism. At this time, the slurry outlet is closed, and the filter assembly can be disassembled and replaced. The raw slurry flows away through the return slurry channel. The above design of the utility model not only ensures the convenience of disassembling and assembling the filter assembly, but also enables the raw slurry to maintain a continuously flowing state, solving the problem of its condensation and pipe blockage.

[0014] 2. The utility model can install a high-pressure water pipe in the return slurry channel. During normal slurry discharging operation, the return slurry channel can be cleaned to ensure that there is no residual slurry condensation in the return slurry line. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a filter for slurry discharging from a slurry bucket in this embodiment installed on a slurry bucket device;

[0016] Figure 2 is a schematic internal structure diagram of the filter for slurry discharging from a slurry bucket in the return slurry operation state in this embodiment;

[0017] Figure 3 is a schematic internal structure diagram of the filter for slurry discharging from a slurry bucket in the slurry discharging and filtering operation state in this embodiment.

[0018] Reference Numerals: slurry bucket 1, return slurry pump 11, filter body 2, flange 21, main channel 22, end face sealing ring 221, return slurry channel 23, return slurry through hole 24, slurry outlet 25, return slurry port 26, return slurry joint 261, functional through hole 27, sealing plug 271, high-pressure water pipe joint 272, filter assembly 3, first slurry discharging pipe joint 31, second slurry discharging pipe joint 32, mesh cavity 33, filter net 34, channel switching mechanism 4, push cylinder 41, sealing disc 42. Detailed Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Such as Figures 1 - 3A filter for discharging pulp from a pulp bucket, which is installed at the outlet end of the pulp bucket 1, includes a filter body 2 and a filtering component 3. One end of the filter body 2 is connected with a flange 21. The filter body 2 is fixedly connected with the outlet end of the pulp bucket 1 through the flange 21. The whole of the present utility model adopts flange connection, which is convenient for installation and disassembly operations. The filter body 2 is provided with a main channel 22. One end of the main channel 22 facing the flange 21 is open, and the main channel 22 is communicated with the outlet end of the pulp bucket 1. When the pulp bucket 1 outputs the dye stock solution, it first flows into the main channel 22. The filter body 2 is provided with a return pulp channel 23. A return pulp through hole 24 is arranged between the main channel 22 and the return pulp channel 23. The main channel 22 and the return pulp channel 23 are communicated through the return pulp through hole 24. The return pulp channel 23 is used for returning pulp. The dye stock solution can flow through the main channel 22 to the return pulp channel 23 for output, achieving the effect of returning pulp. The filter body 2 is provided with a pulp outlet 25 and a return pulp port 26. The pulp outlet 25 is communicated with the main channel 22. The filtering component 3 is installed at the pulp outlet 25. During normal output operation, the dye stock solution flows through the main channel 22 to the pulp outlet 25 for output. The filtering component 3 at the pulp outlet 25 forms a filtering effect on the dye stock solution to ensure that the particle size in the stock solution meets the production requirements of the next process. The return pulp port 26 is communicated with the return pulp channel 23. A return pulp joint 261 is installed at the return pulp port 26. When returning pulp, the dye stock solution flows into the return pulp channel 23 and is output from the return pulp joint 261 at the return pulp port 26. As Figure 1 shown, a return pulp pump 11 is installed outside the pulp bucket 1. The inlet end pipeline of the return pulp pump 11 is connected to the return pulp joint 261, and the outlet end pipeline of the return pulp pump 11 extends into the pulp bucket 1. During the return pulp operation, the return pulp pump 11 is used to suck the slurry and convey it back into the pulp bucket 1 through the pipeline. In the present utility model, the return pulp and the pulp discharge are two different operation processes and cannot be carried out simultaneously. Therefore, the filter body 2 is provided with a channel switching mechanism 4. Only one of the return pulp through hole 24 and the pulp outlet 25 can be opened. The channel switching mechanism 4 is used to control the selective opening of the return pulp through hole 24 and the pulp outlet 25. When the return pulp through hole 24 is opened, the pulp outlet 25 is closed. At this time, the discharge of the dye stock solution does not stop, but the discharged slurry returns to the pulp bucket 1 after swirling through the present utility model. This structural design can ensure the fluidity of the slurry and prevent it from staying and coagulating at the outlet end. When the return pulp through hole 24 is closed and the pulp outlet 25 is opened, the dye stock solution is normally output, and the filtering component 3 forms a filtering and output effect on the dye stock solution. After discharging pulp for a period of time, it is necessary to clean the filter screen. At this time, just switch to the return pulp route. Closing the pulp outlet 25 does not affect the disassembly, replacement and cleaning operations of the filtering component 3.

[0021] As Figure 2 and Figure 3As shown in the figure, the filtering component 3 includes a first slurry outlet pipe joint 31 and a second slurry outlet pipe joint 32. The slurry outlet 25 is a vertical through-hole. The upper end of the slurry outlet 25 communicates with the main channel 22. The first slurry outlet pipe joint 31 is threadedly installed at the lower end of the slurry outlet 25. The first slurry outlet pipe joint 31 and the second slurry outlet pipe joint 32 are connected by flange bolts. A mesh cavity 33 is formed between the first slurry outlet pipe joint 31 and the second slurry outlet pipe joint 32. A filter screen 34 is installed in the mesh cavity 33. The filter screen 34 can filter the output dye stock solution. The first slurry outlet pipe joint 31 and the second slurry outlet pipe joint 32 are bolted together, which is convenient for disassembly. After the first slurry outlet pipe joint 31 and the second slurry outlet pipe joint 32 are disassembled and separated, the filter screen 34 can be taken out for cleaning and replacement operations. Since the slurry outlet 25 is a vertical hole, the large-particle impurities filtered out can remain in the slurry outlet 25 and the first slurry outlet pipe joint 31. The first slurry outlet pipe joint 31 is also threadedly installed. After the first slurry outlet pipe joint 31 is disassembled, the large-particle impurities accumulated in the slurry outlet 25 and the first slurry outlet pipe joint 31 can be removed. The above operations take a certain amount of time. Since the slurry outlet 25 is closed at this time, it does not affect the disassembly, replacement and cleaning operations of the filtering component 3. At this time, the return slurry route is opened, and the slurry bucket 1 can still continuously output the dye stock solution. Only the dye stock solution returns to the slurry bucket 1 through the return slurry route. Since the dye stock solution continuously flows, the condensation and blockage at the outlet end of the slurry bucket 1 and in the main channel 22 will not occur.

[0022] As Figure 2 and Figure 3 shown, the channel switching mechanism 4 includes a push cylinder 41 and a sealing disc 42. The sealing disc 42 is connected to the piston rod end of the push cylinder 41. The sealing disc 42 is arranged in the main channel 22. The telescopic movement of the piston rod of the push cylinder 41 can drive the sealing disc 42 to move up and down. The return slurry through-hole 24 and the slurry outlet 25 are arranged vertically corresponding to each other, which is convenient for the sealing disc 42 to be closed during the up and down movement. When the sealing disc 42 rises, it can fit with the return slurry through-hole 24. When the sealing disc 42 descends, it can fit with the slurry outlet 25. The diameter of the sealing disc 42 is larger than the apertures of the return slurry through-hole 24 and the slurry outlet 25. Therefore, when the sealing disc 42 fits with the return slurry through-hole 24, it can close the return slurry through-hole 24, realizing the cutting off of the return slurry route. When the sealing disc 42 fits with the slurry outlet 25, it can close the slurry outlet 25, realizing the cutting off of the slurry outlet route. Since there is only one sealing disc 42, only one of the return slurry route and the slurry outlet route can be opened.

[0023] As Figure 2 and Figure 3As shown, the filter body 2 is provided with a functional through-hole 27. The functional through-hole 27 communicates with the slurry return through-hole 24. A sealing plug 271 or a high-pressure water pipe joint 272 can be installed in the functional through-hole 27 in a threaded and sealed manner. The high-pressure water pipe joint 272 is only installed when cleaning the slurry return through-hole 24. The sealing plug 271 must be installed when the slurry return route is opened. The sealing plug 271 can block the functional through-hole 27 to prevent slurry leakage. After the slurry return route is cut off and the slurry return operation is completed, however, there will still be residual raw slurry in the slurry return channel 23 and the slurry return pump 11, and these residual liquids will also coagulate and cause blockage. Therefore, after the slurry return operation, the operation of cleaning the slurry return route must be carried out. At this time, the sealing plug 271 can be replaced with a high-pressure water pipe joint 272 to introduce high-pressure clean water to clean the slurry return route. Since the slurry return through-hole 24 is closed by the sealing disc 42 at this time, the cleaning operation on the slurry return route does not affect the slurry output operation on the slurry output route. The slurry return cleaning water can be directly discharged into the slurry bucket 1 (in fact, a small amount of cleaning water does not affect the viscosity of the raw slurry), or it can be output through a pipeline to a dedicated external waste water tank.

[0024] As Figure 2 shown, an end face sealing ring 221 is installed outside the open end of the main channel 22. The open end of the main channel 22 is the end face where the flange 21 is located, which is the connecting end face with the outlet end of the slurry bucket 1. Installing the end face sealing ring 221 here can improve the sealing performance of the connecting position and prevent slurry leakage. To ensure complete non-slurry leakage, multiple end face sealing rings 221 can also be set for sealing.

[0025] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A filter for pulp barrel discharge, installed at the outlet end of the pulp barrel (1), characterized in that: The invention comprises a filter body (2) and a filter assembly (3), wherein one end of the filter body (2) is connected to a flange (21), and the filter body (2) is fixedly connected to the outlet end of a pulp barrel (1) via the flange (21); the filter body (2) is provided with a main channel (22), one end of the main channel (22) is open toward the flange (21), and the main channel (22) is connected to the outlet end of the pulp barrel (1); the filter body (2) is provided with a pulp return channel (23), and a pulp return through hole (24) is provided between the main channel (22) and the pulp return channel (23); The filter body (2) is provided with a pulp outlet (25) and a pulp return outlet (26), the pulp outlet (25) is connected to the main channel (22), the filter assembly (3) is installed at the pulp outlet (25), the pulp return outlet (26) is connected to the pulp return channel (23), the pulp return outlet (26) is installed with a pulp return joint (261), the filter body (2) is installed with a channel switching mechanism (4), the pulp return through hole (24) and the pulp outlet (25) can only be opened at one, and the channel switching mechanism (4) is used to control the opening of the pulp return through hole (24) and the pulp outlet (25).

2. A filter for discharging pulp from a pulp barrel according to claim 1, characterized in that: The filter assembly (3) comprises a first slurry outlet pipe joint (31) and a second slurry outlet pipe joint (32); the slurry outlet (25) is a vertical through hole; the upper end of the slurry outlet (25) is connected to the main channel (22); the first slurry outlet pipe joint (31) is threadedly mounted on the lower end of the slurry outlet (25); the first slurry outlet pipe joint (31) and the second slurry outlet pipe joint (32) are connected by flange bolts; a mesh cavity (33) is formed between the first slurry outlet pipe joint (31) and the second slurry outlet pipe joint (32); a filter screen (34) is installed in the mesh cavity (33).

3. A filter for discharging pulp from a pulp barrel according to claim 1, characterized in that: The return pulp through hole (24) and the pulp outlet (25) are arranged in correspondence with each other up and down. The channel switching mechanism (4) comprises a push cylinder (41) and a sealing disk (42). The sealing disk (42) is connected to the piston rod end of the push cylinder (41). The sealing disk (42) is arranged in the main channel (22). The extension and retraction of the piston rod of the push cylinder (41) can drive the sealing disk (42) to move up and down. When the sealing disk (42) rises, it can fit with the return pulp through hole (24). When the sealing disk (42) descends, it can fit with the pulp outlet (25).

4. A filter for discharging pulp from a pulp barrel according to claim 3, characterized in that: The diameter of the sealing disk (42) is larger than the diameters of the pulp return hole (24) and the pulp outlet (25).

5. A filter for discharging pulp from a pulp barrel according to claim 1, characterized in that: The filter body (2) is provided with a functional through hole (27), the functional through hole (27) being connected to the slurry return through hole (24), the functional through hole (27) being threadedly sealed with a sealing plug (271) or a high-pressure water pipe joint (272), the high-pressure water pipe joint (272) being installed only when the slurry return through hole (24) is cleaned.

6. A filter for discharging pulp from a pulp barrel according to claim 1, characterized in that: An end face sealing ring (221) is installed outside the open end of the main channel (22).

7. A filter for discharging pulp from a pulp barrel according to claim 1, characterized in that: A return pulp pump (11) is installed outside the pulp barrel (1), the inlet end pipeline of the return pulp pump (11) is connected to the return pulp joint (261), and the outlet end pipeline of the return pulp pump (11) extends into the pulp barrel (1).

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