Filters

Abstract

The present invention relates to the technical field of filters, and proposes a filter, including a shell, a partition plate body arranged in the shell, the partition plate body divides the interior of the shell into a first cavity and a second cavity, an air intake cylinder body arranged on the shell, the air intake cylinder body penetrates the side wall of the shell, the end of the air intake cylinder body located outside the shell is the inlet end, there is a gap between the outer wall of the dust removal cylinder body and the inner wall of the air intake cylinder body, the dust removal cylinder body is connected with the second cavity, a guide plate body is arranged in the air intake cylinder body, the guide plate body has a conical guide surface, the tip of the conical guide surface is close to the inlet end of the air intake cylinder body, the conical guide surface is used to guide the air entering through the air intake cylinder body to the inner wall of the air intake cylinder body, a sewage outlet is opened on the side wall of the air intake cylinder body, the sewage outlet is close to the end with a larger diameter of the conical guide surface, a collecting shell is arranged on the air intake cylinder body, and the collecting shell is connected with the sewage outlet. Through the above technical scheme, the problem of poor initial filtering effect of the filter in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of filters, and in particular to filters. Background Art

[0002] The air filter is located in the air intake system of engineering machinery. It is responsible for filtering impurities such as dust and sand in the air entering the engine combustion chamber to prevent these impurities from wearing out the internal parts of the engine, while ensuring sufficient clean air for engine combustion. Due to its own structural design, the existing air filter has a poor filtering effect on some larger particles such as sand and gravel particles. Summary of the invention

[0003] The present invention provides a filter, which solves the problem that the filter in the prior art has poor filtering effect on larger particles such as sand and gravel.

[0004] The technical solution of the present invention is as follows: a filter, comprising:

[0005] case,

[0006] A partition plate body is arranged in the housing, and the partition plate body divides the interior of the housing into a first cavity and a second cavity, wherein the second cavity is used for installing a filter element.

[0007] An air intake cylinder is arranged on the shell, the air intake cylinder penetrates the side wall of the shell, one end of the air intake cylinder is located outside the shell, and the other end is located in the first cavity and close to the partition plate body, the air intake cylinder is communicated with the first cavity, and the end of the air intake cylinder located outside the shell is an inlet end,

[0008] A dust removal cylinder, one end of which is arranged on the partition plate body, and the other end is a free end and extends into the air intake cylinder body, a gap is provided between the outer wall of the dust removal cylinder body and the inner wall of the air intake cylinder body, and the dust removal cylinder body is connected with the second cavity,

[0009] The guide plate body is arranged in the air intake cylinder body, and the guide plate body has a conical guide surface, the tip of the conical guide surface is close to the inlet end of the air intake cylinder body, and the conical guide surface is used to guide the air entering through the air intake cylinder body to the inner wall of the air intake cylinder body, and there is a gap between the conical guide surface and the inner wall of the air intake cylinder body.

[0010] A sewage outlet is provided on the side wall of the air intake cylinder, and the sewage outlet is close to the end with a larger diameter of the conical guide surface.

[0011] A collecting shell is arranged on the air intake cylinder body, and the collecting shell is communicated with the sewage outlet.

[0012] As a further technical solution,

[0013] The sewage outlets are evenly arranged around the conical guide surface.

[0014] The collecting shell is annular and is sleeved outside the air inlet cylinder. An annular opening is provided on the collecting shell, and the annular opening is communicated with the sewage outlet.

[0015] As a further technical solution,

[0016] The guide plate body is provided with a plurality of first guide holes, and the plurality of first guide holes are evenly arranged along the circumference of the conical guide surface.

[0017] As a further technical solution,

[0018] The conical guide surface is coaxial with the air intake cylinder body, and the angle between the conical guide surface and the central axis gradually increases from the tip to the end with a larger diameter.

[0019] As a further technical solution, it also includes:

[0020] A guide cylinder is arranged in the air intake cylinder, the guide cylinder is located on one side of the guide plate body, and the guide cylinder is used to guide the air entering through the air intake cylinder to a position close to the middle of the air intake cylinder.

[0021] The guide cylinder is conical, and the end of the guide cylinder with a smaller diameter is close to and faces the tip of the conical guide surface.

[0022] As a further technical solution,

[0023] The guide cylinder is provided with a plurality of second guide holes, and the plurality of second guide holes are evenly arranged along the circumference of the guide cylinder.

[0024] As a further technical solution,

[0025] The first guide hole and the second guide hole are both strip-shaped, the first guide hole is opened along the generatrix direction of the conical guide surface, and the second guide hole is opened along the generatrix direction of the guide cylinder.

[0026] The first flow guide hole penetrates an end of the conical flow guide surface with a larger diameter, and the second flow guide hole penetrates an end of the flow guide cylinder with a smaller diameter.

[0027] As a further technical solution,

[0028] The first guide holes and the second guide holes are arranged alternately.

[0029] As a further technical solution, it also includes:

[0030] A shaft body is arranged in the air intake cylinder body, and the shaft body is coaxial with the air intake cylinder body.

[0031] The spiral blade is arranged between the shaft body and the inner wall of the air intake cylinder, and the spiral blade and the guide cylinder body are respectively located on both sides of the guide plate body.

[0032] As a further technical solution,

[0033] The air intake cylinder is divided into an upper section, a middle section and a lower section from the inlet end to the other end. The guide cylinder and the guide plate are located in the upper section, the spiral blades are located in the middle section, and the middle section of the air intake cylinder is conical and the end with a larger diameter is close to the lower section.

[0034] The working principle and beneficial effects of the present invention are:

[0035] In the present invention, the first cavity completes the initial screening of the air, and the filter element in the second cavity completes the further fine filtration of the air. Specifically, when the air is initially screened, the air entering the air intake cylinder can effectively guide the airflow to flow along the inner wall of the air intake cylinder after passing through the conical guide surface, and then the large particles will enter the first cavity through the gap between the dust removal cylinder and the air intake cylinder. The air without the particles enters the second cavity through the free end of the dust removal cylinder for further filtration. The ingenious setting of the sewage outlet, especially near the position with the larger diameter end of the conical guide surface, can effectively collect and discharge the dust and impurities carried by the airflow. Specifically, the larger particles will have a certain speed and inertia after passing through the conical guide surface, and enter the collection shell through the sewage outlet, which not only filters out larger particles such as larger sand and gravel, but also improves the life of the filter element, but also facilitates regular cleaning, greatly simplifies the maintenance process, and reduces maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0038] Figure 2 It is a left-side structural schematic diagram of the present invention;

[0039] Figure 3 For the present invention Figure 2 Schematic diagram of the AA section structure;

[0040] Figure 4 For the present invention Figure 3 Middle B is a schematic diagram of a partially enlarged structure;

[0041] Figure 5 It is a schematic diagram of the explosion structure of the present invention;

[0042] Figure 6 It is a schematic diagram of the three-dimensional structure of the air intake cylinder body of the present invention;

[0043] Figure 7 This is a schematic diagram of the front view of the air intake cylinder body of the present invention;

[0044] Figure 8 For the present invention Figure 7 Schematic diagram of the CC cross-section structure;

[0045] Fig. 9 It is a schematic diagram of the cross-sectional structure of the air intake cylinder of the present invention;

[0046] Fig.10 The explosion structure of the filter element of the present invention is shown in FIG. Figure 1 ;

[0047] Fig.11 The explosion structure of the filter element of the present invention is shown in FIG. Figure 2 ;

[0048] Fig.12 For the present invention Figure 3 Middle D is a schematic diagram of the partially enlarged structure;

[0049] Fig.13 For the present invention Fig.10 Middle E is a schematic diagram of a partially enlarged structure;

[0050] In the figure: 1-shell, 11-first cavity, 12-second cavity, 2-partition plate, 31-air inlet cylinder, 32-dust removal cylinder, 33-drainage port, 41-guide plate, 411-conical guide surface, 42-collection shell, 421-annular opening, 43-first guide hole, 44-guide cylinder, 45-second guide hole, 51-shaft, 52-spiral blade, 61-dust outlet, 62-check valve, 63-outlet Mouth pipe, 64-flow guide reinforcing rib plate, 7-filter element, 71-first core body, 72-third cavity, 73-upper opening, 74-lower opening, 75-second core body, 76-fourth cavity, 77-first annular groove, 78-annular convex edge, 79-annular skeleton, 791-first annular plate, 792-second annular plate, 710-support core body, 81-support plate body, 82-bayonet, 83-first gap, 84-annular gap. DETAILED DESCRIPTION

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0052] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0053] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0055] like Figure 1-13 As shown, the present invention proposes a filter, comprising: a shell 1, a partition plate 2 is arranged in the shell 1, the partition plate 2 divides the interior of the shell 1 into a first cavity 11 and a second cavity 12, the second cavity 12 is used to install a filter element, an air intake cylinder 31 is arranged on the shell 1, the air intake cylinder 31 passes through the side wall of the shell 1, one end of the air intake cylinder 31 is located outside the shell 1, and the other end is located in the first cavity 11 and close to the partition plate 2, the air intake cylinder 31 is connected to the first cavity 11, the end of the air intake cylinder 31 located outside the shell 1 is the inlet end, one end of the dust removal cylinder 32 is arranged on the partition plate 2, and the other end is a free end and extends into the air intake cylinder 31, and the outer wall of the dust removal cylinder 32 is connected to the air intake cylinder 31. There is a gap between the inner walls of the cylinder 31, the dust removal cylinder 32 is connected to the second cavity 12, the guide plate body 41 is arranged in the air intake cylinder 31, and the guide plate body 41 has a conical guide surface 411, the tip of the conical guide surface 411 is close to the inlet end of the air intake cylinder 31, the conical guide surface 411 is used to guide the air entering through the air intake cylinder 31 to the inner wall of the air intake cylinder 31, there is a gap between the conical guide surface 411 and the inner wall of the air intake cylinder 31, a sewage outlet 33 is opened on the side wall of the air intake cylinder 31, the sewage outlet 33 is close to the end with a larger diameter of the conical guide surface 411, and the collecting shell 42 is arranged on the air intake cylinder 31, and the collecting shell 42 is connected to the sewage outlet 33.

[0056] In this embodiment, Figure 4 and Figure 8As shown, the first cavity 11 completes the initial screening of the air, and the filter element in the second cavity 12 completes the further fine filtration of the air. Specifically, when the air is initially screened, the air entering the air intake cylinder 31 can effectively guide the airflow to flow along the inner wall of the air intake cylinder 31 after passing through the conical guide surface 411, and then the large particles will pass through the gap between the dust removal cylinder 32 and the air intake cylinder 31 and enter the first cavity 11. The air without particles passes through the free end of the dust removal cylinder 32 and enters the second cavity 12 for further filtration. The ingenious arrangement of the sewage outlet 33, especially at the position close to the larger diameter end of the conical guide surface 411, can effectively collect and The dust and impurities carried by the exhaust airflow, specifically, larger particles, will have a certain speed and inertia after passing through the conical guide surface 411, and enter the collection shell 42 through the sewage outlet 33, which not only filters out larger particles such as larger sand and gravel, and improves the life of the filter element, but also facilitates regular cleaning, greatly simplifies the maintenance process, and reduces maintenance costs and time. It is equivalent to a two-level primary screening, that is, the conical guide surface 411 removes larger sand and gravel particles under the action of inertia, and then removes slightly smaller particles through the dust removal cylinder 32, thereby improving the overall air filtration effect, reducing the burden on the filter element, and increasing the service life of the filter element.

[0057] Furthermore, a plurality of sewage outlets 33 are evenly arranged around the conical guide surface 411 . The collecting shell 42 is annular and sleeved outside the air inlet cylinder 31 . The collecting shell 42 is provided with an annular opening 421 , which is connected to the sewage outlet 33 .

[0058] In this embodiment, the sewage outlet 33 is a plurality of openings evenly opened around the conical guide surface 411, forming an all-round discharge network to meet the demand of the conical guide surface 411 to discharge sewage in all directions. The collecting shell 42 is designed to be annular and is sleeved on the outside of the air intake cylinder 31. Such an annular structure is not only beautiful but also practical, and can seamlessly connect multiple sewage outlets 33, ensuring that the discharged large particles such as sand and gravel can be effectively collected.

[0059] Furthermore, the guide plate body 41 is provided with a plurality of first guide holes 43 , and the plurality of first guide holes 43 are evenly arranged along the circumference of the conical guide surface 411 .

[0060] In this embodiment, the first guide hole 43 does not allow larger sand and gravel particles to pass through (large sand and gravel particles need to be guided by the conical guide surface 411 before entering the sewage outlet 33 or passing through the gap between the conical guide surface 411 and the inner wall of the air intake cylinder 31), but it can increase the overall air flow rate, reduce the burden of the filter air circulation, and reduce energy consumption.

[0061] Furthermore, the conical guide surface 411 is coaxial with the air intake cylinder 31 , and the angle between the conical guide surface 411 and the central axis gradually increases from its tip to the end with a larger diameter.

[0062] In this embodiment, Figure 8 As shown, the coaxial design ensures that the airflow smoothly transitions to the conical guide surface along the central axis of the air intake cylinder, reduces the sudden change of the airflow direction, reduces the turbulence and resistance of the air flow, and makes the airflow more orderly and efficient. The design of the conical guide surface 411 with a gradually increasing angle from the tip to the end with a larger diameter can gradually accelerate the airflow, and use the momentum effect of the airflow to more effectively push the larger particles carried to the inner wall of the guide plate body 41 and the air intake cylinder body 31, and then discharge them through the sewage outlet 33, and can also reduce the impact force between the airflow passing through the guide cylinder body 44 and the conical guide surface 411, thereby reducing energy consumption.

[0063] Furthermore, it also includes that the guide cylinder 44 is arranged in the air intake cylinder 31, the guide cylinder 44 is located on one side of the guide plate body 41, the guide cylinder 44 is used to guide the air entering through the air intake cylinder 31 to the middle part close to the air intake cylinder 31, the guide cylinder 44 is conical, and the end of the guide cylinder 44 with a smaller diameter is close to and facing the tip of the conical guide surface 411.

[0064] In this embodiment, Figure 8 As shown, the guide cylinder 44 is located on one side of the guide plate body 41, and is specially designed to guide the airflow to concentrate on the middle part of the air inlet cylinder 31. Combining the design of the guide plate body 41 and the guide cylinder 44, the direction of the particles in the airflow can be more finely controlled, so that the particles move along the guide plate body 41 and provide a speed for it, so that larger particles can be more easily guided to the sewage outlet 33 under the action of inertia.

[0065] Furthermore, a plurality of second flow guiding holes 45 are formed on the flow guiding cylinder 44 , and the plurality of second flow guiding holes 45 are evenly arranged along the circumference of the flow guiding cylinder 44 .

[0066] In this embodiment, Fig. 9 As shown, the second guide hole 45 does not allow larger sand and gravel particles to pass through (large sand and gravel particles need to be discharged through the lower end outlet of the guide cylinder 44), but can increase the overall air flow rate, reduce the burden of air circulation of the filter, reduce energy consumption, and the air passing through the second guide hole 45 can have an impact force on the conical guide surface 411, which can further increase the speed of the particles passing through the conical guide surface 411 and better discharge larger particles.

[0067] Furthermore, the first guide hole 43 and the second guide hole 45 are both strip-shaped. The first guide hole 43 is opened along the generatrix direction of the conical guide surface 411, and the second guide hole 45 is opened along the generatrix direction of the guide cylinder 44. The first guide hole 43 passes through the end with a larger diameter of the conical guide surface 411, and the second guide hole 45 passes through the end with a smaller diameter of the guide cylinder 44.

[0068] In this embodiment, the first guide hole 43 and the second guide hole 45 are designed to be strip-shaped and opened along the generatrix direction of each guide structure, ensuring that the airflow can flow along the longest radial direction of the guide surface and the guide cylinder when passing through. This design helps the airflow to accelerate linearly and pass smoothly, reducing the turbulence and energy loss of the airflow. The first guide hole 43 passes through the end with a larger diameter of the conical guide surface 411, which helps to accelerate the airflow while using the inertia principle to effectively separate and guide larger particles to move to one side of the guide plate body, and finally be guided to the sewage outlet, and as Fig. 9 As shown, the first guide hole 43 and the second guide hole 45 are designed to be strip-shaped, and the through-type design can prevent particles from clogging the first guide hole 43 and the second guide hole 45, and the impact of the airflow has a certain cleaning effect.

[0069] Furthermore, the first guide holes 43 and the second guide holes 45 are arranged alternately.

[0070] In this embodiment, the first guide holes 43 and the second guide holes 45 are arranged alternately, so that the gas passing through the second guide holes 45 can directly impact the conical guide surface 411, thereby further accelerating the particles on the conical guide surface 411, increasing the speed of the particles, and allowing them to pass through the sewage outlet 33 better.

[0071] Furthermore, the shaft body 51 is arranged in the air intake cylinder body 31, the shaft body 51 is coaxial with the air intake cylinder body 31, the spiral blade 52 is arranged between the shaft body 51 and the inner wall of the air intake cylinder body 31, and the spiral blade 52 and the guide cylinder body 44 are respectively located on both sides of the guide plate body 41.

[0072] In this embodiment, Fig. 9 As shown, the spiral blades 52 can cause the air flowing through them to rotate. The rotation of the air will generate centrifugal force. Under the action of the centrifugal force, some smaller particles will be closer to the inner wall of the air inlet cylinder 31, and therefore it will be easier to be discharged into the first cavity 11 through the gap between the outer wall of the dust removal cylinder 32 and the inner wall of the air inlet cylinder 31.

[0073] Furthermore, the air intake cylinder 31 is divided into an upper section, a middle section and a lower section from the inlet end to the other end. The guide cylinder 44 and the guide plate body 41 are located in the upper section, the spiral blades 52 are located in the middle section, and the middle section of the air intake cylinder 31 is conical and the end with a larger diameter is close to the lower section.

[0074] In this embodiment, Figure 8 As shown, the middle section of the air intake cylinder 31 is conical, which can provide movement space for particles close to the inner wall of the air intake cylinder 31, and effectively move the particles as far away from the dust removal cylinder 32 as possible under the action of centrifugal force, so that the overall filtering effect is better and smaller particles are discharged as much as possible.

[0075] Furthermore, the shell 1 has a dust exhaust port 61 , and the first cavity 11 is connected to the outside through the dust exhaust port 61 . A one-way valve 62 is arranged on the dust exhaust port 61 . The shell 1 also has an outlet pipe 63 connected to the second cavity 12 .

[0076] In this embodiment, the dust outlet 61 is used to discharge the particles in the first cavity 11 , and the one-way valve 62 is used to prevent air from entering the first cavity 11 from the outside.

[0077] Furthermore, a plurality of air intake cylinders 31 and dust removal cylinders 32 are provided in a one-to-one correspondence.

[0078] In this embodiment, the provision of multiple air intake cylinders 31 and dust removal cylinders 32 can improve the efficiency of air intake and reduce the burden of filtering air.

[0079] Furthermore, the connection point between the air inlet cylinder 31 and the first cavity 11 is closer to the partition plate 2 than the free end of the dust removal cylinder 32 .

[0080] In this embodiment, Figure 4 As shown, the connection between the air intake cylinder 31 and the first cavity 11 is closer to the partition plate 2 than the free end of the dust removal cylinder 32 , in order to prevent the particles in the first cavity 11 from entering the second cavity 12 through the dust removal cylinder 32 .

[0081] Furthermore, it also includes that the guide reinforcement rib plate 64 is arranged on the inner wall of the air intake cylinder 31, and the guide reinforcement rib plate 64 is arranged between two adjacent sewage outlets 33. The guide reinforcement rib plate 64 is a triangular prism shape, and the guide reinforcement rib plate 64 has a guide surface near the inlet end of the air intake cylinder 31.

[0082] In this embodiment, Fig. 9 As shown, both ends of the guide reinforcing rib plate 64 extend to the upper and lower sides of the sewage outlet 33 , which can improve the overall strength of the air intake cylinder 31 and can also guide the particles that hit it into the sewage outlet 33 .

[0083] Further, the filter element 7 includes a first core body 71 arranged in the second cavity 12, the first core body 71 has a third cavity 72, the first core body 71 has an upper opening 73 and a lower opening 74 connected to the third cavity 72, a first gap 83 is provided between the outer wall of the upper opening end 73 and the inner wall of the second cavity 12, the outer wall at the lower opening 74 of the first core body 71 is in close contact with the second cavity 12, the first gap 83 is connected to the first cavity 11, the second core body 75 is disassembled and arranged in the third cavity 72, the second core body 75 has a fourth cavity 76, the second core body 75 has a second opening, the fourth cavity 76 is connected to the first cavity through the second opening, and the second core body 75 seals the upper opening 73.

[0084] In this embodiment, Figure 3 and Figure 10-12 As shown, the filter element 7 is a split structure, consisting of a first core body 71, a second core body 75, an annular skeleton 79 and a supporting core body 710. When in use, the air entering through the air intake cylinder body 31 enters the second cavity 12, and part of it enters the first gap 83, and part of it enters the fourth cavity 76. The air entering the first gap 83 is filtered by the first core body 71 and then enters the third cavity 72. The air entering the fourth cavity 76 is filtered by the second core body 75 and then enters the third cavity 72. Then, both enter the combustion chamber through the outlet pipe 63. The filter element 7 adopts a combined form, which is convenient for installation on the one hand, and convenient for replacing damaged parts on the other hand, without replacing the entire part, thereby saving costs.

[0085] Furthermore, one end of the upper opening 73 of the first core body 71 has a first annular groove 77, and the second opening end of the second core body 75 has an annular ridge 78. After the second core body 75 is arranged in the first core body 71, the annular ridge 78 is located in the first annular groove 77, and an annular gap 84 is provided between the inner wall of the first annular groove 77 and the outer wall of the annular ridge 78. The annular skeleton 79 is used to be arranged in the annular gap 84.

[0086] In this embodiment, Fig.11 and Fig.12 As shown, the annular skeleton 79 is made of a relatively hard material, which can effectively support one end of the upper opening 73 and the second opening end of the second core 75 to prevent them from deformation, thereby increasing their service life. In addition, it also plays a role in sealing the annular convex edge 78 and the annular gap 84 to improve the sealing performance.

[0087] Furthermore, the annular skeleton 79 includes a first annular plate 791 and a second annular plate 792. The first annular plate is arranged on the second annular plate. The first annular plate is arranged in the annular gap. The plate surface of the second annular plate is in contact with the end surface of the upper opening end of the first core body 71 and the end surface of the second opening end of the second core body 75.

[0088] In this embodiment, the first annular plate 791 is arranged in the annular gap to effectively play a supporting role. In addition, the second annular plate 792 plays a sealing role on the one hand, and on the other hand can further improve the strength of the first annular plate 791, enhance the overall shape stability, and further prevent deformation.

[0089] Furthermore, it also includes a supporting plate body 81 . A plurality of supporting plate bodies 81 are arranged along the circumference of the partition plate body 2 . The partition plate body 81 has a bayonet 82 . The fourth periphery of the second annular plate is used to be bayoneted in the bayonet 82 .

[0090] In this embodiment, Fig.10 , Fig.12 and Fig.13 As shown, the support plate body 81 can play the role of clamping and fixing the second annular plate on the one hand, and on the other hand, there is a certain gap between the bayonet 82 and the inner wall of the second cavity 12, thereby forming a first gap 83, which is very convenient.

[0091] Furthermore, it also includes a support core 710 which is disposed in one end of the lower opening 74 of the first core 71 , and the side wall of the support core 710 is in contact with the inner wall of the lower opening 74 of the first core 71 .

[0092] In this embodiment, Fig.10 As shown, the edges of the supporting core 710 are made of hard material, which can not only play a filtering role, but also support the lower opening 74 of the first core 71 and the cavity wall of the second cavity 12 to maintain a stable seal.

[0093] Furthermore, the second cavity 12 is divided into an upper second cavity and a lower second cavity. The first gap 83, the fourth cavity 76 and the portion between the partition plate body 2 form the upper second cavity, and the portion between the support core 710 and the outlet pipe 63 is the lower second cavity. The outlet pipe 63 is connected to the lower second cavity.

[0094] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A filter, characterized in that: include, Housing (1), A partition plate body (2) is arranged in the housing (1), and the partition plate body (2) divides the interior of the housing (1) into a first cavity (11) and a second cavity (12), wherein the second cavity (12) is used for installing a filter element. An air intake cylinder (31) is arranged on the shell (1), the air intake cylinder (31) passes through the side wall of the shell (1), one end of the air intake cylinder (31) is located outside the shell (1), and the other end is located in the first cavity (11) and close to the partition plate (2), the air intake cylinder (31) is communicated with the first cavity (11), and the end of the air intake cylinder (31) located outside the shell (1) is an inlet end. A dust removal cylinder (32) is provided at one end on the partition plate (2), and the other end is a free end and extends into the air intake cylinder (31), a gap is provided between the outer wall of the dust removal cylinder (32) and the inner wall of the air intake cylinder (31), and the dust removal cylinder (32) is communicated with the second cavity (12). A guide plate body (41) is arranged in the air intake cylinder body (31), and the guide plate body (41) has a conical guide surface (411), the tip of the conical guide surface (411) is close to the inlet end of the air intake cylinder body (31), and the conical guide surface (411) is used to guide the air entering through the air intake cylinder body (31) to a position close to the inner wall of the air intake cylinder body (31), and there is a gap between the conical guide surface (411) and the inner wall of the air intake cylinder body (31). A sewage outlet (33) is provided on the side wall of the air inlet cylinder (31), and the sewage outlet (33) is close to the end of the conical guide surface (411) with a larger diameter. A collecting shell (42) is arranged on the air intake cylinder (31), and the collecting shell (42) is in communication with the sewage outlet (33). The sewage outlets (33) are uniformly provided with a plurality of them around the conical guide surface (411). The collecting shell (42) is annular and is sleeved outside the air intake cylinder (31). The collecting shell (42) is provided with an annular opening (421), and the annular opening (421) is communicated with the sewage outlet (33). The guide plate body (41) is provided with a plurality of first guide holes (43), and the plurality of first guide holes (43) are evenly arranged in the circumferential direction of the conical guide surface (411).

2. The filter according to claim 1, characterized in that: The conical flow guide surface (411) is coaxial with the air intake cylinder (31), and the angle between the conical flow guide surface (411) and the central axis gradually increases from its tip to an end with a larger diameter.

3. The filter according to claim 1, characterized in that: Also includes, A flow guide cylinder (44) is arranged in the air intake cylinder (31), the flow guide cylinder (44) is located on one side of the flow guide plate body (41), and the flow guide cylinder (44) is used to guide the air entering through the air intake cylinder (31) to a position close to the middle of the air intake cylinder (31). The flow guide cylinder (44) is conical, and the end of the flow guide cylinder (44) with a smaller diameter is close to and faces the tip of the conical flow guide surface (411).

4. The filter according to claim 3, characterized in that: The flow guide cylinder (44) is provided with a plurality of second flow guide holes (45), and the plurality of second flow guide holes (45) are evenly arranged along the circumference of the flow guide cylinder (44).

5. The filter according to claim 4, characterized in that: The first flow guide hole (43) and the second flow guide hole (45) are both strip-shaped; the first flow guide hole (43) is opened along the generatrix direction of the conical flow guide surface (411); and the second flow guide hole (45) is opened along the generatrix direction of the flow guide cylinder (44). The first flow guide hole (43) penetrates an end of the conical flow guide surface (411) with a larger diameter, and the second flow guide hole (45) penetrates an end of the flow guide cylinder (44) with a smaller diameter.

6. The filter according to claim 4, characterized in that: The first guide holes (43) and the second guide holes (45) are arranged alternately.

7. The filter according to claim 3, characterized in that: Also includes, The shaft body (51) is arranged in the air intake cylinder body (31), and the shaft body (51) and the air intake cylinder body (31) are coaxial. The spiral blade (52) is arranged between the shaft body (51) and the inner wall of the air intake cylinder body (31); the spiral blade (52) and the flow guide cylinder body (44) are respectively located on two sides of the flow guide plate body (41).

8. The filter according to claim 7, characterized in that: The air intake cylinder (31) is divided into an upper section, a middle section and a lower section from the inlet end to the other end, the guide cylinder (44) and the guide plate body (41) are located in the upper section, the spiral blade (52) is located in the middle section, and the middle section of the air intake cylinder (31) is conical and the end with a larger diameter is close to the lower section.

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