Cleaning and spraying device for felt for papermaking

Abstract

The invention relates to the technical field of papermaking equipment, in particular to a papermaking felt cleaning and spraying device which comprises a support, a water outlet pipe is arranged at the top of the support, a water inlet pipe is arranged at the bottom of the support, a plurality of filtering assemblies are evenly arranged on the left side and the right side of the support, and top water outlets of the filtering assemblies are connected with the water outlet pipe through first pipelines. A bottom water inlet of the filtering assembly is connected with the water inlet pipe through a second pipeline, and a first valve and a second valve are arranged on the first pipeline and the second pipeline respectively; the spraying mechanism is provided with the multiple filtering assemblies, when each filtering assembly is cleaned, other filtering mechanisms can be normally used, and therefore normal use of the spraying mechanism cannot be affected.

Description

Technical Field

[0001] The present invention relates to the technical field of papermaking equipment, and particularly to a felt cleaning and spraying device for papermaking. Background Art

[0002] During the papermaking process, a felt is required to remove excess water from the pulp to improve the quality and strength of the paper. As the usage time increases, the felt will also adsorb a lot of impurities and become dirty. Therefore, it is necessary to clean or replace the felt regularly to avoid affecting the production quality of the paper.

[0003] In the prior art, when cleaning the felt, a spraying device is generally used to rinse the felt. However, since tap water may contain impurities, if the felt is directly rinsed with tap water, the impurities in the water body may be washed onto the felt, thus affecting the pulp quality. Therefore, in order to purify the water body, a filtering mechanism needs to be provided in the spraying device to remove the impurities in the water body. However, after being filtered by the filtering mechanism, although the impurities in the water body can be removed, the impurities will also remain inside the filtering mechanism. After a period of accumulation, the water passing capacity of the filtering mechanism will decrease, thus affecting the spraying effect. Therefore, the filtering mechanism also needs to be cleaned or replaced regularly. However, during the cleaning process of the existing filtering mechanism, the machine must be stopped, which causes the spraying mechanism to be temporarily unavailable, and thus may affect the production efficiency of the enterprise. For this reason, we propose a felt cleaning and spraying device for papermaking to well solve the above drawbacks. Summary of the Invention

[0004] The purpose of the present invention is to provide a felt cleaning and spraying device for papermaking to solve the problems raised in the above background art.

[0005] The present invention is achieved through the following technical solutions:

[0006] A felt cleaning and spraying device for papermaking includes a bracket. A water outlet pipe is provided at the top of the bracket, and a water inlet pipe is provided at the bottom of the bracket. A plurality of filtering components are evenly arranged on the left and right sides of the bracket. The top water outlet of the filtering component is connected to the water outlet pipe through a first pipeline, and the bottom water inlet of the filtering component is connected to the water inlet pipe through a second pipeline. A first valve and a second valve are respectively provided on the first pipeline and the second pipeline;

[0007] It further includes a spraying mechanism, a first slag discharge pipe, and a second slag discharge pipe. The water inlet of the spraying mechanism is connected to the water outlet pipe through a third pipeline. There are two first slag discharge pipes and two second slag discharge pipes, and the two first slag discharge pipes and the two second slag discharge pipes are respectively located on the left and right sides of the bracket;

[0008] The filtering assembly includes a filter cartridge and a filter element disposed inside the filter cartridge. The filter cartridge is connected to the first slag discharge pipe, and the filter element is connected to the second slag discharge pipe.

[0009] Optionally, a first connecting portion is sleeved at the bottom of the filter cartridge, and the first connecting portion is communicated with the inside of the filter cartridge; a second connecting portion is sleeved at the top of the filter cartridge, and the second connecting portion is communicated with the inside of the filter element.

[0010] Optionally, the first pipeline is connected to the second connecting portion, and the second pipeline is connected to the first connecting portion.

[0011] Optionally, the spraying mechanism includes a main spraying pipe and a plurality of nozzles. The main spraying pipe has a water inlet port, and the water inlet port is connected to the third pipeline.

[0012] Optionally, the bottom of the filter cartridge has a slag outlet, and the slag outlet is connected to the first slag discharge pipe through a third valve.

[0013] Optionally, a slag discharge pipe is provided on the side wall of the filter cartridge. The slag discharge pipe penetrates through the side wall of the filter cartridge and is communicated with the bottom of the filter element, and the slag discharge pipe is connected to the second slag discharge pipe through a fourth valve.

[0014] Optionally, a rotating sleeve is provided inside the filter element. The top of the rotating sleeve is rotatably connected to the inner wall of the filter element. A plurality of strip-shaped openings are formed in the side wall of the rotating sleeve, and a water leakage hole is formed in the top wall of the rotating sleeve.

[0015] Optionally, a main shaft is fixedly provided on the top wall of the rotating sleeve, and a first bevel gear is sleeved outside the main shaft; an impeller is rotatably provided inside the second connecting portion, and a second bevel gear is fixedly sleeved on the rotating shaft of the impeller, and the first bevel gear and the second bevel gear are meshed with each other.

[0016] Optionally, the top wall of the rotating sleeve is rotatably connected to the inner wall of the filter element through a one-way bearing. When the water body passes through the second connecting portion from the inside of the filter element, the impeller cannot rotate; when the water body passes through the second connecting portion from the outside and enters the filter element, the impeller can rotate.

[0017] Optionally, there is a gap between the side wall of the rotating sleeve and the inner wall of the filter element, and the strip-shaped openings are distributed vertically.

[0018] Compared with the prior art, the present invention provides a felt cleaning and spraying device for papermaking, which has the following beneficial effects:

[0019] 1. The present invention has a plurality of filtering assemblies, and when each filtering assembly is being cleaned, other filtering mechanisms can be used normally, so the normal use of the spraying mechanism will not be affected;

[0020] 2. The present invention cleans the filter element by backwashing, without disassembling the filter assembly, greatly improving the cleaning efficiency. At the same time, it also helps to improve the production efficiency of the enterprise, is more environmentally friendly, and has lower costs.

[0021] 3. The present invention has a rotating sleeve. When the filter assembly is backwashed, the rotating sleeve can rotate on the filter element, thereby increasing the impact force of the water body and improving the cleaning effect of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the front view of the structure of the present invention;

[0023] Figure 2 is the side view of the structure of the present invention;

[0024] Figure 3 is the schematic diagram of the filter assembly of the present invention;

[0025] Figure 4 is the schematic diagram of the structure of the rotating sleeve of the present invention;

[0026] Figure 5 is Figure 3 the enlarged corresponding view at A in

[0027] In the figure: 100, bracket; 200, water outlet pipe; 300, water inlet pipe; 400, filter assembly; 401, first pipeline; 402, second pipeline; 403, first valve; 404, second valve; 405, filter cartridge; 406, filter element; 407, first connecting part; 408, second connecting part; 409, third valve; 410, slag discharge pipe; 411, fourth valve; 412, rotating sleeve; 413, strip-shaped opening; 414, leakage hole; 415, main shaft; 416, first bevel gear; 417, impeller; 418, second bevel gear; 500, spraying mechanism; 501, third pipeline; 502, main pipe; 503, nozzle; 600, first slag discharge pipe; 700, second slag discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1: Please refer to Figure 1 - Figure 3, A felt cleaning and spraying device for papermaking, comprising a bracket 100. An outlet pipe 200 is provided at the top of the bracket 100, and an inlet pipe 300 is provided at the bottom of the bracket 100. A number of filter components 400 are evenly arranged on the left and right sides of the bracket 100. The top water outlet of the filter component 400 is connected to the outlet pipe 200 through a first pipeline 401, and the bottom water inlet of the filter component 400 is connected to the inlet pipe 300 through a second pipeline 402. A first valve 403 and a second valve 404 are respectively provided on the first pipeline 401 and the second pipeline 402. Water source enters the device through the inlet pipe 300, and after being filtered by the filter component 400, it then enters the outlet pipe 200.

[0030] Specifically, the filter component 400 includes a filter cylinder 405 and a filter element 406 disposed inside the filter cylinder 405. The filter cylinder 405 is an outer shell, and the filter element 406 is a cylindrical structure made of a metal mesh structure. The filter cylinder 405 is connected to a first slag discharge pipe 600, and the filter element 406 is connected to a second slag discharge pipe 700. A first connecting portion 407 is sleeved at the bottom of the filter cylinder 405, and the first connecting portion 407 communicates with the inside of the filter cylinder 405. A second connecting portion 408 is sleeved at the top of the filter cylinder 405, and the second connecting portion 408 communicates with the inside of the filter element 406. The first pipeline 401 is connected to the second connecting portion 408, and the second pipeline 402 is connected to the first connecting portion 407.

[0031] Therefore, water enters the filter cylinder 405 from the first connecting portion 407, then passes through the side wall of the filter element 406 and enters the filter element 407, and finally discharges from the second connecting portion 408. During this process, some impurities in the water body are left outside the filter element 406 or embedded in the mesh holes of the filter element 406.

[0032] This embodiment further includes a spraying mechanism 500, a first slag discharge pipe 600, and a second slag discharge pipe 700. Among them, the water inlet of the spraying mechanism 500 is connected to the outlet pipe 200 through a third pipeline 501. There are two first slag discharge pipes 600 and two second slag discharge pipes 700, and the two first slag discharge pipes 600 and the two second slag discharge pipes 700 are respectively located on the left and right sides of the bracket 100. The spraying mechanism 500 includes a spraying main pipe 502 and a number of nozzles 503. The spraying main pipe 502 has a water inlet port, and this water inlet port is connected to the third pipeline 501. After being filtered by the filter component 400, water enters the outlet pipe 200, and finally the water enters the spraying mechanism 500 through the third pipeline 501 and is finally sprayed out by the nozzles 503 for flushing the felt or other spare parts for papermaking.

[0033] Further, the bottom of the filter cartridge 405 has a slag outlet, which is connected to the first slag discharge pipe 600 through a third valve 409. A slag discharge pipe 410 is provided on the side wall of the filter cartridge 405. The slag discharge pipe 410 penetrates through the side wall of the filter cartridge 405 and is connected to the bottom of the filter element 406, and the slag discharge pipe 410 is connected to the second slag discharge pipe 700 through a fourth valve 411.

[0034] In summary, in the actual application process of this embodiment, water enters the device from the water inlet pipe 300, and then after being filtered by a number of filter components 400, it is sprayed out from the spraying mechanism 500. During this process, the first valve 403 and the second valve 404 are both opened, and the third valve 409 and the fourth valve 411 are both closed. After using for a period of time, since impurities may adhere to the filter component 400, in order to avoid clogging of the mesh holes by impurities and affecting the water outlet efficiency, backwashing is required to remove the impurities. The specific process is as follows:

[0035] First, close the second valve 404 in a certain filter component 400, and then open the corresponding third valve 409 and fourth valve 411; then the water filtered by other filter components 400 still enters the water outlet pipe 200. However, due to the opening of the first valve 403, the water will enter the filter element 406 from the water outlet pipe 200, and then backwash the filter element 406 in the reverse direction, so that the impurities attached to the filter element 406 are discharged from the third valve 409 or the fourth valve 411. After the backwashing of one filter component 400 is completed, repeat the next filter component 400. It should be noted that only one filter component 400 is backwashed each time, and the remaining filter components 400 are in the normal working state, and the backwashing time for each time is 3 to 8 seconds.

[0036] Embodiment 2: Please refer to Figure 1 - Figure 5 , this embodiment of the present application also proposes a felt cleaning and spraying device for papermaking. The difference between this embodiment and Embodiment 1 is that: a rotating sleeve 412 is provided inside the filter element 406. The top of the rotating sleeve 412 is rotatably connected to the inner wall of the filter element 406. A number of strip-shaped openings 413 are provided on the side wall of the rotating sleeve 412, and a water leakage hole 414 is provided on the top wall of the rotating sleeve 412. Specifically, in this embodiment, there is a gap between the side wall of the rotating sleeve 412 and the inner wall of the filter element 406. The strip-shaped openings 413 are distributed vertically, and the number of strip-shaped openings 413 is one.

[0037] Furthermore, a main shaft 415 is fixedly provided on the top wall of the rotating sleeve 412. An external portion of the main shaft 415 is sleeved with a first bevel gear 416. An impeller 417 is rotatably provided inside the second connecting portion 408. A second bevel gear 418 is fixedly sleeved on a rotating shaft of the impeller 417, and the first bevel gear 416 and the second bevel gear 418 are meshed with each other. The top wall of the rotating sleeve 412 is rotatably connected to the inner wall of the filter element 406 through a one-way bearing. When water passes through the second connecting portion 408 from inside the filter element 406, the impeller 417 cannot rotate. When water passes through the second connecting portion 408 from the outside and enters the filter element 406, the impeller 417 can rotate.

[0038] The rotating sleeve 412 is cylindrical and has a closed structure at both upper and lower ends. In addition, the top end of the rotating sleeve 412 is lower than the second connecting portion 408. Therefore, when water enters the inside of the filter element 406 from the second connecting portion 408, the water is all concentrated above the top of the rotating sleeve 412. Immediately afterwards, the water passes through the leakage holes 414 and enters the rotating sleeve 412, so that the pressure inside the rotating sleeve 412 increases. Then, the water inside the rotating sleeve 412 passes through the strip-shaped opening 413 and enters the filter cylinder 405, and finally is discharged from the slag outlet, while part of the water located inside the filter element 406 is discharged through the slag discharge pipe 410.

[0039] It should be noted that since the width of the strip-shaped opening 413 is relatively narrow, the flow rate of the water ejected from the strip-shaped opening 413 is relatively fast, and the impact force is greater, which is more conducive to washing down the impurities attached to the side wall of the filter element 406. In addition, due to the arrangement of the impeller 417, when water enters the inside of the filter element 406, it will indirectly drive the rotating sleeve 412 to rotate, so that the strip-shaped opening 413 sprays water while rotating to cover all positions of the filter element 406, further improving the washing effect.

[0040] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A felt cleaning and spraying device for papermaking, comprising a bracket (100), a water outlet pipe (200) is provided at the top of the bracket (100), and a water inlet pipe (300) is provided at the bottom of the bracket (100), characterized in that: A number of filter components (400) are evenly arranged on the left and right sides of the bracket (100). The top water outlet of the filter component (400) is connected to the water outlet pipe (200) through a first pipeline (401), and the bottom water inlet of the filter component (400) is connected to the water inlet pipe (300) through a second pipeline (402), and a first valve (403) and a second valve (404) are respectively provided on the first pipeline (401) and the second pipeline (402); It further includes a spraying mechanism (500), a first slag discharge pipe (600) and a second slag discharge pipe (700). The water inlet of the spraying mechanism (500) is connected to the water outlet pipe (200) through a third pipeline (501). There are two first slag discharge pipes (600) and two second slag discharge pipes (700), and the two first slag discharge pipes (600) and the two second slag discharge pipes (700) are respectively located on the left and right sides of the bracket (100); The filter component (400) includes a filter cylinder (405) and a filter element (406) arranged inside the filter cylinder (405). The filter cylinder (405) is connected to the first slag discharge pipe (600), and the filter element (406) is connected to the second slag discharge pipe (700).

2. The felt cleaning and spraying device for papermaking according to claim 1, wherein: A first connecting part (407) is sleeved at the bottom of the filter cylinder (405), and the first connecting part (407) is communicated with the inside of the filter cylinder (405); a second connecting part (408) is sleeved at the top of the filter cylinder (405), and the second connecting part (408) is communicated with the inside of the filter element (406).

3. The felt cleaning and spraying device for papermaking according to claim 2, wherein: The first pipeline (401) is connected to the second connecting part (408), and the second pipeline (402) is connected to the first connecting part (407).

4. A felt cleaning and spraying device for papermaking according to claim 1, characterized in that: The spraying mechanism (500) includes a spraying main pipe (502) and a number of nozzles (503). The spraying main pipe (502) has a water inlet port, and this water inlet port is connected to the third pipeline (501).

5. The felt washing and spraying device for papermaking according to claim 1, characterized in that: The bottom of the filter cylinder (405) has a slag outlet, and this slag outlet is connected to the first slag discharge pipe (600) through a third valve (409).

6. A felt washing and spraying device for papermaking according to claim 1, characterized in that: A slag discharge pipe (410) is provided on the side wall of the filter cylinder (405). The slag discharge pipe (410) penetrates the side wall of the filter cylinder (405) and is communicated with the bottom of the filter element (406), and the slag discharge pipe (410) is connected to the second slag discharge pipe (700) through a fourth valve (411).

7. The felt cleaning and spraying device for papermaking according to claim 3, characterized in that: A rotating sleeve (412) is arranged inside the filter element (406). The top of the rotating sleeve (412) is rotatably connected to the inner wall of the filter element (406). A number of strip-shaped openings (413) are opened on the side wall of the rotating sleeve (412), and a water leakage hole (414) is opened on the top wall of the rotating sleeve (412).

8. A felt cleaning and spraying device for papermaking according to claim 7, characterized in that: A main shaft (415) is fixedly provided on the top wall of the rotating sleeve (412), and a first bevel gear (416) is sleeved outside the main shaft (415); an impeller (417) is rotatably provided inside the second connecting portion (408), a second bevel gear (418) is fixedly sleeved on the rotating shaft of the impeller (417), and the first bevel gear (416) is meshed with the second bevel gear (418).

9. The flannel cleaning and spraying device for papermaking according to claim 8, characterized in that: The top wall of the rotating sleeve (412) is rotatably connected with the inner wall of the filter element (406) through a one-way bearing. When the water body passes through the second connecting portion (408) from the inside of the filter element (406), the impeller (417) cannot rotate; when the water body passes through the second connecting portion (408) from the outside and enters the filter element (406), the impeller (417) can rotate.

10. A felt cleaning spray device for papermaking according to claim 9, characterized in that: A gap is provided between the side wall of the rotating sleeve (412) and the inner wall of the filter element (406), and the strip-shaped openings (413) are distributed vertically.

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