Fluid distribution cylinder and angle filter

Abstract

The invention provides a fluid distribution cylinder and an angle filter. The fluid distribution cylinder comprises a cylinder body and a cylinder bottom arranged at one end of the cylinder body. A first distribution hole is formed in the cylinder body, a second distribution hole is formed in the cylinder bottom, the second distribution hole comprises a center hole formed in the center of the cylinder bottom and a peripheral side hole formed in the periphery of the center hole, and the diameter of the center hole is larger than that of the peripheral side hole. A distribution cylinder inlet is formed in one end, far away from the cylinder bottom, of the cylinder body, the fluid distribution cylinder is used for being mounted on the inner side of a filter screen of the angle filter, and the distribution cylinder inlet is used for being communicated with an inlet of the angle filter, so that fluid firstly passes through the distribution cylinder and then passes through the filter screen when entering the angle filter. According to the fluid distribution cylinder and the angle filter, the problem that the filter screen is damaged due to the fact that fluid impact force is excessively concentrated can be effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of fluid filtration equipment, and particularly to a fluid distribution cylinder and an angle filter. Background Art

[0002] In industrial production, the lined mesh angle filter is widely used in the filtration of various fluids. In the process of implementing this application, the inventors found that there are at least the following problems in the prior art: during the actual use of the angle filter, after the filter net inside the filter has been used for a period of time, the filter net will be torn and even broken by the fluid, resulting in the failure of the filter. Through simulation analysis, it is known that there is a fluid reflux phenomenon at the filter inlet, and this reflux phenomenon is one of the main reasons for the breakage of the filter net. At the same time, due to the unreasonable flow path of the fluid inside the filter, when the fluid flow rate suddenly increases, the filter net is extremely likely to bear excessive pressure, thus accelerating the damage of the filter net. And because the flow path of the fluid inside the filter is unreasonable, when the filter net is continuously scoured by the fluid, it cannot effectively disperse the force, and it also causes the filter net to be damaged due to excessive local force. The damage of the filter net not only increases the maintenance cost of the equipment, but also the frequent replacement of the filter net will affect the continuity of production, resulting in a decrease in production efficiency, bringing many inconveniences and economic losses to production and operation. Summary of the Invention

[0003] Based on this, this application provides a fluid distribution cylinder and an angle filter to improve the problem that the filter net is easily damaged due to excessive force caused by the unreasonable design of the internal flow path of the filter in the prior art.

[0004] To achieve the above object, the technical solution of the embodiment of this application is realized as follows:

[0005] On the one hand, the embodiment of this application provides a fluid distribution cylinder, including a cylinder body and a cylinder bottom provided at one end of the cylinder body; a first distribution hole is provided on the cylinder body, a second distribution hole is provided on the cylinder bottom, the second distribution hole includes a central hole provided at the center of the cylinder bottom and a circumferential hole provided on the outer circumference of the central hole, and the diameter of the central hole is greater than the diameter of the circumferential hole;

[0006] One end of the cylinder body away from the cylinder bottom forms a distribution cylinder inlet, and the fluid distribution cylinder is used to be installed inside the filter net of the angle filter, and the distribution cylinder inlet is used to communicate with the inlet of the angle filter so that the fluid enters the angle filter after passing through the distribution cylinder and then through the filter net.

[0007] In one embodiment, the first distribution holes include a front-end distribution hole disposed near the inlet side of the distribution cylinder and a rear-end distribution hole disposed near the bottom side of the cylinder, and the aperture of the front-end distribution hole is larger than that of the rear-end distribution hole.

[0008] In one embodiment, the front-end distribution holes are evenly distributed circumferentially on the cylinder body, the rear-end distribution holes are evenly distributed circumferentially on the cylinder body, and the intersection line of the front-end distribution holes and the rear-end distribution holes is located near the center of the length of the cylinder body.

[0009] In one embodiment, the ratio of the aperture of the central hole to the outer diameter of the bottom of the cylinder is (1 to 3):4.

[0010] In one embodiment, the circumferential side holes are evenly distributed around the outer circumference of the central hole, and the number of turns of the circumferential side holes is at least two turns.

[0011] In one embodiment, the material of the fluid distribution cylinder includes stainless steel.

[0012] On the other hand, an embodiment of the present application provides an angle filter, including a filter cylinder body, a filter screen and the fluid distribution cylinder as described above. The filter screen is arranged inside the filter cylinder body, the fluid distribution cylinder is arranged inside the filter cylinder body and is located inside the filter screen. The distribution cylinder inlet is communicated with the inlet of the angle filter, so that when the fluid enters the angle filter, it first passes through the fluid distribution cylinder and then passes through the filter screen.

[0013] In one embodiment, the filter cylinder body includes a first cylinder body and a second cylinder body which are communicated;

[0014] One end of the first cylinder body is the filter inlet, and the other end is the sewage discharge port;

[0015] One end of the second cylinder body is connected to the middle of the first cylinder body, and the other end is the filter outlet;

[0016] The filter screen is arranged inside the first cylinder body, and the ratio of the length of the fluid distribution cylinder to the length of the filter screen is (1 to 3):4.

[0017] In one embodiment, the filter screen and the fluid distribution cylinder are arranged at intervals.

[0018] In one embodiment, a cylinder mouth flange is arranged on the cylinder body at the distribution cylinder inlet, and the cylinder mouth flange is fixedly connected to the first cylinder body.

[0019] The present application has at least the following beneficial effects: The fluid distribution cylinder provided by the present application is used to be installed inside the filter screen of the angle filter, and when the fluid enters the angle filter, it first passes through the fluid distribution cylinder and then through the filter screen. Since the pressure of the fluid drops after passing through the first distribution hole and the second distribution hole of the fluid distribution cylinder, the impact force of the fluid on the filter screen is reduced, and the overly concentrated impact force of the fluid on the filter screen is avoided, making the fluid evenly distributed on the filter screen. A large central hole is provided at the center of the bottom of the fluid distribution cylinder of the present application, and small peripheral holes are provided around the central hole. The aperture of the central hole is relatively large, which can reduce the flow resistance and increase the opening rate of the fluid distribution cylinder. The peripheral holes can increase the radial flow rate of the fluid, and even if the flow rate suddenly increases, the filter screen can be effectively protected from excessive impact force. At the same time, the peripheral holes can effectively reduce the fluid pressure at the rear end (the end far from the inlet) of the filter, thereby reducing the occurrence of the fluid backflow phenomenon towards the filter inlet direction and further preventing the filter screen from being damaged. The angle filter provided by the present application effectively extends the service life of the filter screen and improves the production efficiency of the angle filter by arranging a fluid distribution cylinder with a reasonable structure inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a front view structural schematic diagram of the fluid distribution cylinder according to an embodiment of the present application.

[0021] Figure 2 is Figure 1 a left view structural schematic diagram of the fluid distribution cylinder.

[0022] Figure 3 is Figure 1 a three-dimensional partial cross-sectional structural schematic diagram of the fluid distribution cylinder.

[0023] Figure 4 is a front view cross-sectional structural schematic diagram of the angle filter according to an embodiment of the present application.

[0024] Figure 5 is Figure 4 a bottom view structural schematic diagram of the angle filter.

[0025] Figure 6 is Figure 4 a right view structural schematic diagram of the angle filter.

[0026] Figure 7 is a flow trend diagram of the internal fluid of the angle filter with a traditional structure.

[0027] The meanings of the reference numerals in the drawings are as follows:

[0028] 10. Fluid distribution cylinder; 11. Inlet of the distribution cylinder; 12. Cylinder body; 120. First distribution hole; 121. Front-end distribution hole; 122. Rear-end distribution hole; 13. Bottom of the cylinder; 130. Second distribution hole; 131. Central hole; 132. Peripheral hole; 14. Flange at the cylinder opening; 20. Filter screen; 30. Filter cylinder body; 31. First cylinder; 32. Second cylinder; 311. Inlet of the filter; 312. Drainage port; 321. Outlet of the filter; 40. Drainage cover. Detailed implementation mode

[0029] The technical solution of the present application will be further elaborated in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit the implementation of this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. In the description of this application, unless otherwise stated, the meaning of "plurality" is two or more.

[0032] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 3 , the fluid distribution cylinder 10 of the embodiment of this application includes a cylinder body 12 and a bottom 13 of the cylinder provided at one end of the cylinder body 12; a first distribution hole 120 is provided on the cylinder body 12, and a second distribution hole 130 is provided on the bottom 13 of the cylinder. The second distribution hole 130 includes a central hole 131 provided at the center of the bottom 13 of the cylinder and a peripheral hole 132 provided on the outer periphery of the central hole 131. The diameter of the central hole 131 is larger than the diameter of the peripheral hole 132.

[0034] One end of the cylinder body 12 away from the cylinder bottom 13 forms a distribution cylinder inlet 11. The fluid distribution cylinder 10 is used to be installed inside an angle filter and is located inside the filter net 20. The distribution cylinder inlet 11 is used to communicate with the inlet of the angle filter, so that when the fluid enters the angle filter, it first passes through the distribution cylinder and then through the filter net 20.

[0035] The fluid distribution cylinder 10 of this embodiment is made of corrosion-resistant and high-strength materials, such as stainless steel. This kind of material can ensure that the fluid distribution cylinder 10 can still work stably and reliably in a complex fluid environment.

[0036] As Figure 1 shown, the first distribution holes 120 of this embodiment include a front-end distribution hole 121 arranged on the side close to the distribution cylinder inlet 11 and a rear-end distribution hole 122 arranged on the side close to the cylinder bottom 13. The aperture of the front-end distribution hole 121 is larger than that of the rear-end distribution hole 122. Herein, the front end refers to the side close to the fluid inlet, and the rear end is the side away from the fluid inlet. The number and distribution mode of the first distribution holes 120 can be set according to actual needs. For example, the front-end distribution holes 121 are arranged in an array along the circumferential direction of the cylinder body 12, or arranged in a crisscross pattern along the circumferential direction of the cylinder body 12 (as Figure 1 shown); the distribution mode of the rear-end distribution holes 122 can be the same as or different from that of the front-end distribution holes 121. Making the aperture of the front-end distribution hole 121 larger than that of the rear-end distribution hole 122 can increase the front-end pressure in the fluid distribution cylinder 10, so that the flow rate at the front end of the fluid distribution cylinder 10 increases, the front-end filter net 20 of the angle filter can be effectively utilized, and at the same time, fluid backflow can be avoided. Specifically, for example, the front-end distribution holes 121 can be evenly distributed along the circumferential direction on the cylinder body 12, and the rear-end distribution holes 122 can also be evenly distributed along the circumferential direction on the cylinder body 12. The boundary line L between the front-end distribution holes 121 and the rear-end distribution holes 122 is located near the center of the length of the cylinder body 12, that is, the front-end distribution holes 121 are provided on half of the cylinder body 12 in the length direction, and the rear-end distribution holes 122 are provided on the other half of the cylinder body 12.

[0037] As Figure 2 shown, the ratio of the aperture of the central hole 131 of this embodiment to the outer diameter of the cylinder bottom 13 is (1-3):4, that is, the aperture of the central hole 131 is about 1 / 4 to 3 / 4 of the outer diameter of the cylinder bottom 13. Preferably, the aperture of the central hole 131 is half of the outer diameter of the cylinder bottom 13. The circumferential side holes 132 are evenly distributed around the outer circumference of the central hole 131, and the number of turns of the circumferential side holes 132 is at least two turns. As Figure 2As shown in the figure, the center of the bottom 13 of the fluid distribution cylinder 10 is a large circular hole (central hole 131), and the outer periphery of the large circular hole is two circles of small circular holes (peripheral side holes 132). This design allows the fluid flowing through the bottom 13 to disperse from the middle and the periphery respectively. The small holes are evenly arranged around, which will cause a sudden increase in the pressure inside the bottom 13, so that more fluid is ejected from the small holes around, making the fluid flow in two directions, radial and axial, to achieve the diversion and rectification of the fluid, enabling the fluid that originally concentrated on impacting the filter screen 20 to be more evenly distributed to each part of the filter screen 20, reducing the local impact force of the fluid on the filter screen 20, and improving the service life of the filter screen 20.

[0038] As Figures 4 to 6 shown, the present application also provides an angle filter, which includes a filter cylinder body 30, a filter screen 20 and the fluid distribution cylinder 10 of the above embodiment. The filter screen 20 is arranged inside the filter cylinder body 30, and the fluid distribution cylinder 10 is arranged inside the filter cylinder body 30 and is located inside the filter screen 20. The distribution cylinder inlet 11 is communicated with the inlet of the angle filter, so that when the fluid enters the angle filter, it first passes through the fluid distribution cylinder 10 and then passes through the filter screen 20.

[0039] Specifically, as Figure 4 shown, the filter cylinder body 30 includes a first cylinder body 31 and a second cylinder body 32 which are connected in communication. One end of the first cylinder body 31 is a filter inlet 311, and the other end is a sewage discharge port 312. One end of the second cylinder body 32 is connected to the middle of the first cylinder body 31, and the other end is a filter outlet 321; the filter screen 20 is arranged inside the first cylinder body 31, and the ratio of the length of the fluid distribution cylinder 10 to the length of the filter screen 20 is (1 - 3):4.

[0040] In use, the first cylinder body 31 is placed horizontally, the second cylinder body 32 is placed vertically, and the second cylinder body 32 is located below the first cylinder body 31. The filter net 20 is also cylindrical in shape, and both ends of the filter net 20 are tightly connected to both ends of the first cylinder body 31 respectively, so that all the fluid entering the angle filter can pass through the filter net 20 and then be discharged from the filter outlet 321 at the bottom. At one end of the first cylinder body 31 away from the filter inlet 311, a detachable sewage cover 40 is provided. For some dirt accumulated inside the filter net 20 (near the sewage cover 40), the accumulated dirt can be removed by removing the sewage cover 40, so as to improve the filtering efficiency of the angle filter. The fluid distribution cylinder 10 is installed in the space surrounded by the filter net 20, that is, inside the filter net 20, and the fluid distribution cylinder 10 is arranged at an interval from the filter net 20. The distance between the fluid distribution cylinder 10 and the filter net 20 is preferably greater than 3 mm. The length of the fluid distribution cylinder 10 is about 1 / 4 to 3 / 4 of the length of the filter net 20, and preferably the length of the fluid distribution cylinder 10 is about half of the length of the filter net 20. In this way, the fluid in the angle filter can be better distributed in terms of flow rate, so that the flow rates passing through the front end and the rear end of the filter net 20 each account for about 50%, thereby improving the utilization rate of the filter net 20, enabling the front-end filter net 20 to be effectively utilized, and also reducing the impact force of the fluid on the filter net 20.

[0041] As Figure 1 and Figure 2 shown, on the cylinder body 12 at the distribution cylinder inlet 11 of this embodiment, a cylinder mouth flange 14 is provided, and the cylinder mouth flange 14 is fixedly connected to the first cylinder body 31. That is, a circle of flange is provided at the distribution cylinder inlet 11, and the cylinder mouth flange 14 is welded and fixed to the filter inlet 311 of the angle filter, so that all the fluid flowing into the filter inlet 311 will pass through the fluid distribution cylinder 10 before reaching the filter net 20, so as to achieve the distribution effect of the fluid and reduce the impact force of the fluid on the filter net 20.

[0042] As Figure 7As shown, in the angle filter in the prior art, due to the unreasonable design of the flow path of the internal fluid, part of the filter net 20 fails to be fully utilized, making it difficult to improve the overall filtration efficiency. Moreover, when dealing with fluids with different flow rates and velocities, the adaptability of the traditional angle filter is poor. For example, when the fluid flow rate suddenly increases, the filter net 20 is easily subjected to excessive pressure and thus accelerates damage; when the flow rate is too small, it will cause the filter net 20 to not be fully utilized, resulting in waste of filtration resources. The fluid distribution cylinder 10 and the angle filter in the embodiment of the present application well improve the above problems. By arranging the fluid distribution cylinder 10 in the angle filter, the flow direction and velocity of the fluid are re-distributed, improving the adaptability of the angle filter, reducing the local impact force of the fluid on the filter net 20, and at the same time improving the filtration efficiency of the filter net 20, so that the filter net 20 is fully utilized.

[0043] Due to the excessive impact force at the filter inlet 311 of the traditional angle filter, a high-speed low-pressure area is formed at the filter inlet 311. Therefore, when the fluid reaches the rear end cut-off area (i.e., near the sewage outlet 312), a stagnant area will be generated, forming a low-speed high-pressure area. This leads to the situation of low pressure at the inlet and high pressure at the rear end, and the fluid will flow from the rear end of the filter towards the inlet direction, flow back inside through the filter net 20. Since the filter net 20 has no internal support structure, this backflow phenomenon combined with the impact force of the high-speed fluid at the filter inlet 311 is extremely likely to cause damage to the filter net 20. As Figure 7 shown, it is a flow trend diagram of the internal fluid of the traditional structure angle filter. It can be seen from the figure that the fluid inside the traditional structure angle filter is mainly concentrated in the second half of the filter, resulting in a low utilization rate of the filter net 20 in the first half of the filter. Considering the above backflow problem, the angle filter in the embodiment of the present application adds a fluid distribution cylinder 10 inside the angle filter and reasonably designs the structure of the fluid distribution cylinder 10. By designing the aperture size, distribution position, etc. of the distribution holes (the first distribution hole 120, the second distribution hole 130), the pressure at the front end of the filter net 20 is increased, the pressure at the rear end is reduced, the flow rate of the fluid is evenly distributed, and the fluid that originally concentrated on impacting the filter net 20 can be more evenly distributed to each part of the filter net 20, thereby re-distributing the fluid passing through the front and rear parts of the filter net 20. At the same time, the presence of the fluid distribution cylinder 10 changes the flow state of the fluid at the filter inlet 311, effectively reducing the occurrence of inlet backflow and extending the service life of the filter net 20.

[0044] The fluid distribution cylinder and the angle filter with the fluid distribution cylinder provided by the embodiments of the present application effectively solve the problems of easy breakage and short service life of the filter screen in the existing inner-lined mesh angle filter. By adding a fluid distribution cylinder, the internal structure of the filter is optimized, the utilization rate of the filter screen is improved, the situation of inlet backflow is reduced, the overall service life of the angle filter is extended, and the stable production is ensured. Through the design of adding a fluid distribution cylinder at the inlet of the angle filter, when the fluid enters the filter, it will first pass through the distribution cylinder, so that the fluid is divided into two flow directions, radial and axial. Through the special structure of the fluid distribution cylinder and the different designs of the sizes of the distribution holes, the fluid can pass through the filter screen evenly, effectively improving the utilization rate of the filter screen. At the same time, since the fluid distribution cylinder redistributes the fluid, it avoids the damage of the filter screen caused by excessive fluid impact force on a local part. The design of the fluid distribution cylinder increases the flow rate at the inlet of the filter screen, greatly reducing the backflow phenomenon existing at the front end of the filter, and reducing the risk of damage and shedding of the filter screen caused by the reverse scouring of the fluid on the filter screen.

[0045] The fluid distribution cylinder and the angle filter of the embodiments of the present application can reasonably distribute the fluid, give full play to the performance of the filter screen, and improve the use stability of the angle filter. It can be widely applied to the manufacturing fields of equipment such as water system pipelines, valves, and pumps. The fluid distribution cylinder of the embodiments of the present application conducts preliminary shunting and rectification of the fluid through the design of the special aperture of the distribution holes and the internal flow channel, so that the fluid that originally concentrated on impacting the filter screen can be more evenly distributed to each part of the filter screen, thereby redistributing the fluid before and after passing through the filter screen. It improves the utilization rate of the filter screen. The fluid distribution cylinder makes the fluid evenly distributed on the filter screen, which can avoid the premature damage of the local filter screen due to excessive fluid impact force, greatly improving the overall utilization rate of the filter screen and extending the service life of the filter screen. It can effectively reduce the inlet backflow phenomenon of the angle filter, reduce the risk of damage to the filter screen caused by backflow, and thus ensure the stable operation of the filter and reduce the incidence of production interruption problems caused by filter failure. The special design of the angle filter in the embodiments of the present application extends the service life of the filter screen and the filter, reduces the frequency of replacing the filter screen and the filter, reduces the maintenance cost of the equipment, and improves the production efficiency.

[0046] It should be noted that in this article, the term "including", "comprising" 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 further 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 another identical element in the process, method, article or device including that element.

[0047] As described above, this is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A fluid dispensing cylinder, characterized in that: It includes a barrel body and a barrel bottom provided at one end of the barrel body; a first distribution hole is provided on the barrel body, a second distribution hole is provided on the barrel bottom, the second distribution hole includes a central hole provided at the center of the barrel bottom and circumferential holes provided on the outer periphery of the central hole, and the diameter of the central hole is larger than the diameter of the circumferential holes. One end of the barrel body away from the barrel bottom forms a distribution barrel inlet. The fluid distribution barrel is used to be installed inside the filter net of an angle filter, and the distribution barrel inlet is used to communicate with the inlet of the angle filter so that when fluid enters the angle filter, it first passes through the distribution barrel and then through the filter net.

2. The fluid distribution cylinder according to claim 1, characterized in that: The first distribution hole includes a front-end distribution hole provided near the side of the distribution barrel inlet and a rear-end distribution hole provided near the side of the barrel bottom. The aperture of the front-end distribution hole is larger than the aperture of the rear-end distribution hole.

3. The fluid distribution cylinder according to claim 2, characterized in that: The front-end distribution holes are evenly distributed circumferentially on the barrel body, the rear-end distribution holes are evenly distributed circumferentially on the barrel body, and the intersection line of the front-end distribution holes and the rear-end distribution holes is located near the center of the length of the barrel body.

4. The fluid distribution cylinder according to claim 1, characterized in that: The ratio of the aperture of the central hole to the outer diameter of the barrel bottom is (1-3):

4.

5. The fluid distribution cylinder according to claim 1, wherein: The circumferential holes are evenly distributed around the outer periphery of the central hole, and the number of circles of the circumferential holes is at least two.

6. The fluid distribution cylinder according to any one of claims 1 to 5, characterized in that: The material of the fluid distribution barrel includes stainless steel.

7. An angle filter, characterized in that: It includes a filter barrel, a filter net and the fluid distribution barrel according to any one of claims 1 to 6. The filter net is provided inside the filter barrel, the fluid distribution barrel is provided inside the filter barrel and is located inside the filter net, and the distribution barrel inlet communicates with the inlet of the angle filter so that when fluid enters the angle filter, it first passes through the fluid distribution barrel and then through the filter net.

8. The angle filter according to claim 7, wherein: The filter barrel includes a first barrel body and a second barrel body connected in communication. One end of the first barrel body is a filter inlet, and the other end is a sewage discharge port. One end of the second barrel body is connected to the middle of the first barrel body, and the other end is a filter outlet. The filter net is provided inside the first barrel body, and the ratio of the length of the fluid distribution barrel to the length of the filter net is (1-3):

4.

9. The angle filter according to claim 7, wherein: The filter net and the fluid distribution barrel are arranged at intervals.

10. The angle filter according to claim 8, characterized in that: A barrel mouth flange is provided on the barrel body at the distribution barrel inlet, and the barrel mouth flange is fixedly connected to the first barrel body.

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