Pipeline filtering device

Abstract

The utility model discloses a pipeline filtering device, which relates to the technical field of filtering devices, and comprises a filtering barrel, a filtering sieve plate and a back flushing mechanism, the filtering sieve plate is arranged in the filtering barrel, the filtering barrel is divided into a feeding cavity and a discharging cavity by the filtering sieve plate, a feeding pipe is arranged on the feeding cavity, a discharging pipe is arranged on the discharging cavity, and the back flushing mechanism is arranged on the discharging pipe. End covers are densely arranged on the filtering barrel, and back flushing mechanisms are arranged on the filtering barrel, are positioned on the two sides of the filtering sieve plate and can be used for dispersing foreign matters blocked on the filtering sieve plate. Feed liquid containing foreign matters enters from the feeding pipe and is screened and filtered by the filtering sieve plate, the foreign matters are left in the feeding cavity, the clean feed liquid is discharged from the discharging pipe, and when the filtering sieve plate is blocked, dredging can be performed through the back flushing mechanism, so that filter residues such as the foreign matters in the feeding cavity can be conveniently cleaned subsequently, and liquid leakage is avoided in the filter residue cleaning process; operation is convenient and reliable, environmental protection is achieved, and the pipeline filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a pipeline filtering device. Background Art

[0002] In the production process of enterprises, impurities or foreign matter are inevitably present in the fluid materials transported by pipelines. Although certain effects have been achieved by installing traditional filtering devices, with the continuous improvement of environmental protection requirements, leakage in the chemical production process must be eliminated. Traditional pipeline filters are mostly Y-type filters. During the cleaning process of the filter residue, there will always be liquid flowing out of the discharge port, which can easily cause environmental pollution, and the filter plate is blocked and cannot be cleaned directly. Utility Model Content

[0003] The utility model aims to provide a pipeline filtering device to solve the problems existing in the above-mentioned prior art, so that there will be no leakage during the cleaning process of the filter residue, the filter screen plate is easy to clean, and the pipeline filtering effect is improved.

[0004] To achieve the above purpose, the utility model provides the following solutions:

[0005] The utility model provides a pipeline filtering device, including a filter barrel, a filter screen plate and a back-blowing mechanism, wherein the filter barrel is provided with a filter screen plate, the filter screen plate divides the filter barrel into a feed chamber and a discharge chamber, the feed chamber is provided with a feed pipe, the discharge chamber is provided with a discharge pipe, the filter barrel is sealed with an end cover, the filter barrel is provided with a back-blowing mechanism and the back-blowing mechanism is located on both sides of the filter screen plate, and the back-blowing mechanism can disperse foreign matter blocked on the filter screen plate.

[0006] Preferably, the backflush mechanism comprises an air inlet pipe and an air outlet pipe, and the air inlet pipe is arranged on one side of the filter screen plate, and the air outlet pipe is arranged on the other side.

[0007] Preferably, valves are provided on the air inlet pipe and the air outlet pipe, and the air inlet pipe is connected to a nitrogen source.

[0008] Preferably, the filter barrel is connected to the end cover via a flange and bolts, and a sealing ring is provided between the filter barrel and the end cover.

[0009] Preferably, the filter screen plate is vertically arranged in the filter barrel, the feed pipe is arranged below the side wall of the filter barrel, the discharge pipe is arranged above the side wall of the filter barrel, and the feed pipe and the discharge pipe are both provided with valves.

[0010] Preferably, the filter screen plate is inserted into a slot on the inner wall of the filter barrel, and the filter holes of the filter screen plate are provided with different sizes and models.

[0011] Preferably, a pair of viewing mirrors are symmetrically arranged on the side walls of the filter barrel, and the viewing mirrors are respectively located on both sides of the filter screen plate and the vertical distance from the filter screen plate does not exceed 20 cm.

[0012] Preferably, a pressure gauge is provided on the feed chamber and the discharge chamber respectively.

[0013] Compared with the prior art, the utility model has achieved the following technical effects:

[0014] In the utility model, the feed liquid containing foreign matter enters from the feed pipe, is screened and filtered by the filter screen plate, the foreign matter remains in the feed cavity, and the clean feed liquid is discharged from the discharge pipe. When the filter screen plate is blocked, it can be unblocked by the back-blowing mechanism, which is convenient for the subsequent cleaning of foreign matter and other filter residues in the feed cavity. There will be no leakage during the filter residue cleaning process, the operation is convenient and reliable, more environmentally friendly, and the pipeline filtering effect is also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the structure of the pipeline filtering device in the embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly structure of the filter screen plate in the embodiment of the utility model;

[0018] Figure 3 A top view of the pipeline filtering device in the embodiment of the utility model;

[0019] Among them: 1-filter barrel, 2-end cover, 3-filter screen plate, 4-feed chamber, 5-feed pipe, 6-discharge chamber, 7-discharge pipe, 8-inlet pipe, 9-outlet pipe, 10-bolt, 11-valve, 12-sight glass, 13-pressure gauge, 100-pipeline filtering device. DETAILED DESCRIPTION

[0020] 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.

[0021] The utility model aims to provide a pipeline filtering device to solve the problems existing in the prior art, so that there will be no leakage during the cleaning process of the filter residue, the filter screen plate is easy to clean, and the pipeline filtering effect is improved.

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figures 1 to 3 As shown: This embodiment provides a pipeline filtering device 100, including a filter barrel 1, a filter screen plate 3 and a back-blowing mechanism. The filter barrel 1 is provided with a filter screen plate 3, and the filter screen plate 3 divides the filter barrel 1 into a feed chamber 4 and a discharge chamber 6. The feed chamber 4 is provided with a feed pipe 5, and the discharge chamber 6 is provided with a discharge pipe 7. The filter barrel 1 is sealed with an end cover 2, and the filter barrel 1 is provided with a back-blowing mechanism and the back-blowing mechanism is located on both sides of the filter screen plate 3. The back-blowing mechanism can disperse foreign matter blocked on the filter screen plate 3. The filter screen plate 3 can be inserted obliquely into the filter barrel, or placed flat in the filter barrel, or can be set vertically to divide the filter barrel into a feed chamber 4 and a discharge chamber 6. Since both chambers are in the barrel, it can be ensured that the pipeline will not leak when cleaning the filter residue.

[0024] As a preferred solution, the back-blowing mechanism in this embodiment includes an air inlet pipe 8 and an air outlet pipe 9, and an air inlet pipe 8 is provided on one side of the filter screen plate 3, and an air outlet pipe 9 is provided on the other side. Valves 11 are provided on both the air inlet pipe 8 and the air outlet pipe 9, and the air inlet pipe 8 is connected to a nitrogen source. The air outlet pipe 9 in this embodiment is provided on the end cover 2, and the air inlet pipe 8 is provided at the bottom of the barrel, so as to facilitate blowing up some substances with large mass. When the nitrogen back-blowing operation is performed, each valve 11 needs to be controlled to perform, and the valves 11 on the feed pipe 5 and the discharge pipe 7 and the valve 11 on the air outlet pipe 9 are closed, and only the valve on the air inlet pipe 8 is opened to allow nitrogen to enter. After a certain pressure is reached inside the filter, the valve 11 on the air inlet pipe 8 is closed, and the valve 11 on the air outlet pipe 9 is opened to release nitrogen. This operation is repeated several times, and the back-blowing operation is performed to achieve the effect of dredging the filter screen plate 3.

[0025] As a preferred embodiment, the filter barrel 1 in this embodiment is connected to the end cover 2 through a flange and bolts 10, and a sealing ring is arranged between the filter barrel 1 and the end cover 2 to ensure the sealing of the filter barrel 1, while facilitating the opening of the end cover 2 to clear out foreign matter and other filter residues from the feed chamber 4.

[0026] As a preferred solution, in this embodiment, the filter screen plate 3 is vertically arranged in the filter barrel 1, the feed pipe 5 is arranged below the side wall of the filter barrel 1, and the discharge pipe 7 is arranged above the side wall of the filter barrel 1. The feed pipe 5 and the discharge pipe 7 are both provided with valves 11, which are convenient for controlling the feeding and discharging of materials and closing the feeding when cleaning the filter residue. The filter screen plate 3 is inserted into the slot on the inner wall of the filter barrel 1 for easy installation. The filter holes of the filter screen plate 3 are provided with different sizes and models, which can be selected or adjusted according to the size of the material or foreign matter.

[0027] As a preferred solution, a pair of sight glasses 12 are symmetrically arranged on the side wall of the filter barrel 1 in this embodiment. The sight glasses 12 are respectively located on both sides of the filter screen plate 3 and the vertical distance from the filter screen plate 3 is no more than 20 cm, preferably no more than 5 cm. The closer the sight glasses are to the filter screen plate 3, the better, so as to facilitate observation of the blockage of the filter screen plate 3. The sight glasses 12 are respectively located in the middle of the feed cavity 4 and the discharge cavity 6, and can be used to observe the filtering and blockage of the material and foreign matter on the feed side of the filter screen plate 3. The size of the sight glasses 12 can be adjusted according to the size of the barrel body of the filter barrel 1.

[0028] As a preferred solution, in this embodiment, a pressure gauge 13 is respectively provided on the feed chamber 4 and the discharge chamber 6. The pressure gauges 13 in this embodiment are all provided on the end cover 2, and the filtering and clogging conditions of the filter screen plate 3 can be judged by observing the reading difference of the pressure gauges 13 on both sides.

[0029] When the pipeline filtering device 100 of this embodiment is used, the feed liquid containing foreign matter enters from the feed pipe 5, is screened and filtered by the filter screen plate 3, the foreign matter remains in the feed chamber 4, and the clean feed liquid is discharged from the discharge pipe 7; the filtering of materials and foreign matter and the blockage of the filter screen plate 3 can be observed from the sight glass 12 of the feed chamber 4; when the filter screen plate 3 is blocked, the screen plate can be unblocked by the nitrogen backblowing mechanism, which is convenient for the subsequent cleaning of materials or foreign matter in the feed bin; the pressure of the feed liquid before and after the filter screen plate 3 can be observed through the pressure gauge 13 during the filtration process, and the blockage of the screen plate can also be judged by the pressure difference; the end cover 2 can be opened to clean the material and foreign matter, which is convenient and efficient, and at the same time avoids the outflow of the feed liquid.

[0030] This specification uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A pipeline filtering device, characterized in that: It includes a filter barrel, a filter screen plate and a back-blowing mechanism. The filter screen plate is arranged in the filter barrel, and the filter screen plate divides the filter barrel into a feed chamber and a discharge chamber. The feed chamber is provided with a feed pipe, and the discharge chamber is provided with a discharge pipe. The filter barrel is sealed with an end cover, and the filter barrel is provided with a back-blowing mechanism and the back-blowing mechanism is located on both sides of the filter screen plate. The back-blowing mechanism can disperse foreign matter blocked on the filter screen plate.

2. The pipeline filtering device according to claim 1, characterized in that: The back-blowing mechanism comprises an air inlet pipe and an air outlet pipe. The air inlet pipe is arranged on one side of the filter screen plate, and the air outlet pipe is arranged on the other side.

3. The pipeline filtering device according to claim 2, characterized in that: The air inlet pipe and the air outlet pipe are both provided with valves, and the air inlet pipe is connected with a nitrogen source.

4. The pipeline filtering device according to claim 1, characterized in that: The filter barrel is connected to the end cover via a flange and bolts, and a sealing ring is provided between the filter barrel and the end cover.

5. The pipeline filtering device according to claim 1, characterized in that: The filter screen plate is vertically arranged in the filter barrel, the feed pipe is arranged below the side wall of the filter barrel, and the discharge pipe is arranged above the side wall of the filter barrel. The feed pipe and the discharge pipe are both provided with valves.

6. The pipeline filtering device according to claim 1, characterized in that: The filter screen plate is inserted into a slot on the inner wall of the filter barrel, and the filter holes of the filter screen plate are provided with different sizes and models.

7. The pipeline filtering device according to claim 1, characterized in that: A pair of viewing mirrors are symmetrically arranged on the side wall of the filter barrel. The viewing mirrors are respectively located on both sides of the filter screen plate and the vertical distance from the filter screen plate does not exceed 20 cm.

8. The pipeline filtering device according to claim 1, characterized in that: A pressure gauge is respectively arranged on the feed chamber and the discharge chamber.

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