Flow guider of filter and air filter

Abstract

The utility model discloses a fluid director of a filter and an air filter, and belongs to the technical field of filtering equipment, the fluid director comprises a fluid director main body, a plurality of flow guide blades are arranged in the circumferential direction of the fluid director main body, a sealing ring integrally formed with the flow guide blades is arranged on the periphery of the flow guide blades, and a convex ring is arranged on the periphery of the sealing ring. The guide vanes are used for guiding high-pressure air, the high-pressure air forms high-speed rotating airflow after passing through the guide vanes arranged in the circumferential direction, the high-speed airflow can be thrown out, oil and water in the air can be separated out, the sealing rings are arranged on the peripheries of the guide vanes, gaps between the guide vanes and the water cup can be eliminated, and the sealing effect is achieved. When high-speed airflow passes through, all the airflow can pass through the guide vanes; and the convex ring can also play a sealing role and can also play a role in limiting and fixing the fluid director main body. According to the scheme, the problem that the air filtering effect is poor can be effectively solved, and the oil-water separation effect in air is improved.

Description

Technical Field

[0001] The utility model relates to an air filter structure, more specifically, it relates to a filter deflector and an air filter. Background Art

[0002] In the existing pneumatic air filter, after the deflector is combined with the umbrella-shaped seat and the filter element, the upper thread of the umbrella-shaped seat is fixed to the deflector, and the water cup is directly matched with the deflector. However, after the deflector is matched with the mouth of the water cup, there is a large gap in the radial direction, so that when the air enters the deflector position, part of the air will flow away from the gap, which is not conducive to the water separation effect of the filter.

[0003] For example: Chinese patent announcement number CN101352635A, published on January 28, 2009, the invention name is deflector assembly, the application discloses a deflector structure of a filter, including a deflector and a filter element and an umbrella seat arranged below the deflector, the upper part of the deflector is a blade seat, the guide blade is arranged on the outer edge of the blade seat, the center of the blade seat is provided with a connecting part, and the middle part of the deflector is provided with a guiding cavity. This solution can effectively solve the problem that the deflector assembly on the filter and the pressure regulating filter cannot be used universally, but in this solution, there will be a large gap between the guide blade and the water cup, which is not conducive to air water separation and has a poor filtering effect on the air. Utility Model Content

[0004] The utility model overcomes the problem of poor air filtering effect in existing filters and provides a filter deflector and an air filter. The solution can effectively solve the problem of poor air filtering effect and improve the oil-water separation effect in the air.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a deflector of a filter, comprising a deflector body, the deflector body is provided with a plurality of guide blades in the circumference, the outer periphery of the guide blades is provided with a sealing ring integrally formed with the guide blades, and the outer periphery of the sealing ring is provided with a convex ring. The guide blades are used to guide high-pressure air. After the high-pressure air passes through the circumferentially arranged guide blades, a high-speed swirling airflow is formed, which can make the high-speed airflow be thrown out and separate the oil and water in the air. The sealing ring is provided on the outer periphery of the guide pressing plate to eliminate the gap between the guide blades and the water cup, and play a sealing effect. When the high-speed airflow passes through, it can all pass through the guide blades; the convex ring can also play a sealing role, and can also play a role in limiting and fixing the deflector body.

[0006] Preferably, the guide blades are arranged in an annular and radial direction, and the radial inclination direction is downward from the guide body to the sealing ring. The guide blades guide the high-pressure airflow in the filter. By arranging the guide blades in an inclined manner, the high-pressure airflow can be directed to the air-water separation area. The guide blades are inclined in the annular direction, so that the high-pressure airflow is guided in one direction to form a vortex airflow. The radial inclination can increase the air inlet flow of the guide and improve the water separation effect in the air.

[0007] Preferably, corresponding to each of the guide blades, the guide body gradually approaches the sealing ring along the annular inclination direction of the guide blade. In this solution, the guide body is positioned close to the sealing ring so that the air guide holes formed between adjacent guide blades gradually narrow, which is beneficial to increase the air flow rate and improve the water separation effect of the guide.

[0008] Preferably, the guide blade is also provided with a notch, the notch includes a notch slope, and the notch slope forms an acute angle with the outer peripheral surface of the deflector body. The notch structure can reduce the damping effect of the gas, thereby increasing the flow velocity and water separation effect of the airflow; the notch slope forms an acute angle with the outer periphery of the deflector body, which can increase the air intake between the guide blades on the one hand, and improve the deflection effect on the other hand.

[0009] Preferably, the deflector body is further provided with a positioning ring, which protrudes from the surface of the deflector body. The positioning ring is used to position the deflector and prevent the deflector from changing its position.

[0010] Preferably, the side of the deflector body away from the guide blade is an inner annular surface, and the inner annular surface gradually decreases toward the positioning ring. The inner annular surface at the bottom of the deflector body is mainly used to fix the filter element inside the filter. The end surface of the inner annular surface has a larger diameter, and the diameter of the side facing the positioning ring is smaller. On the one hand, it can guide the installation of the filter element, and on the other hand, it can also fix the filter element.

[0011] An air filter includes the above-mentioned deflector and a water cup, wherein a ring groove is provided on the mouth of the water cup, the ring groove is adapted to be connected with the convex ring, and the sealing ring is fitted with the inner wall of the water cup. The water cup is used to receive filtered water, oil, etc. in high-pressure air, the ring groove at the mouth of the cup can be matched with the convex ring on the deflector, and the sealing ring of the deflector can also be fitted with the inner wall of the water cup, thereby eliminating the gap at the mouth of the water cup, forming a multi-layer sealing surface, so that the high-pressure airflow can all enter the water cup through the guide blades, and improve the filtering effect of the airflow.

[0012] Preferably, an umbrella-shaped fixing seat is further included, the umbrella-shaped fixing seat passes through the deflector, a filter element is arranged between the umbrella-shaped fixing seat and the deflector, one end of the filter element abuts against the umbrella-shaped fixing seat, and the other end abuts against the position where the inner peripheral annular surface of the deflector is located. The umbrella-shaped fixing seat is used to fix the deflector, the ventilation structure and the filter element so that the three are relatively fixed, and the filter element is used to filter moisture and oil in the air.

[0013] Preferably, the umbrella-shaped fixing seat is provided with a plurality of vents inside, and the vents are used to guide the air filtered by the filter element to the air outlet position to realize the circulation of the gas.

[0014] Preferably, a ventilation structure is further included, the ventilation structure including an air inlet and an air outlet, the air inlet is connected to the water cup through a flow guide, and the air outlet is connected to the filter element through an umbrella-shaped fixing seat. The air inlet is used to input air to be filtered, and the air outlet is used to output filtered gas. The flow guide and the filter element are located on the flow path of the air inlet and the air outlet, and play the effect of guiding and filtering the air.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) an integrally formed sealing ring is arranged on the outer periphery of the deflector, which can eliminate the assembly gap of the deflector; (2) the use of the deflector eliminates the gap between the filter cup mouth and the deflector, thereby improving the air intake effect and the filtering effect; (3) the structure is simple, the production cost is low, and it is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the deflector of the utility model.

[0017] Figure 2 It is a bottom view of the deflector of the utility model.

[0018] Figure 3 It is a cross-sectional view of the deflector of the utility model.

[0019] Figure 4 It is a half-section axonometric drawing of the deflector of the utility model.

[0020] Figure 5 It is a cross-sectional view of the filter of the utility model.

[0021] Figure 6 It is a top view of the umbrella-shaped fixing seat of the utility model.

[0022] In the figure: 1. guide body, 2. guide blade, 3. sealing ring, 4. convex ring, 5. notch, 5.1. notch slope, 6. positioning ring, 7. inner annular surface, 8. water cup, 9. ring groove, 10. umbrella-shaped fixing seat, 11. filter element, 12. air vent, 13. ventilation structure, 13.1. air inlet, 13.2. air outlet, 14. guide hole, 15. axial hole, 16. step hole, 17. connecting shaft, 18. slender shaft, 19. tray, 20. drain outlet. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0024] Example 1: Figures 1 to 4 The deflector of a filter shown in the figure comprises a deflector body 1, the deflector body 1 is in the shape of a disc, the middle part of the deflector body 1 is in the shape of a stepped through hole, a plurality of guide blades 2 are arranged in the circumferential direction of the deflector body 1, the guide blades 2 are evenly arranged along the circumferential surface of the deflector body 1, and a sealing ring 3 is commonly arranged on the outer edge of all the guide blades 2, the sealing ring 3 is integrally formed with all the guide blades 2, and a guide hole 14 is formed between adjacent guide blades 2; on the upper end surface ( Figure 3 A convex ring 4 is provided (in the direction shown in the figure), and the radial dimension of the convex ring 4 is larger than the radial dimension of the sealing ring 3; the sealing ring 3 is used to cooperate with the connecting structure to eliminate the gap between the outer edge of the guide blade 2 and the connecting structure, thereby improving the guiding effect of the guide vane 2 and the water separation effect of the air.

[0025] like Figure 4 As shown, all the guide blades 2 are arranged obliquely, and the inclination direction is the same along the circumferential direction. Specifically, the guide blades 2 are inclined downward in the counterclockwise direction (the effect is the same in the clockwise direction). The guide blades 2 start from the upper end surface of the guide body 1, extend toward the lower end surface of the guide body 1 and in the circumferential direction, and are connected to the lower end surface. Figure 3 As shown, the guide blades 2 are also arranged tilted in the radial direction of the guide body 1, and the inclination direction of the guide blades 2 is arranged tilted downward from one side of the guide body 1 to one side of the sealing ring 3, and the radial inclination angle is 7° to 10°. The radial inclination angle in this embodiment is 8°.

[0026] When high-pressure air passes through the deflector body 1, the high-pressure air first enters the guide holes 14 between the guide blades 2 from the upper surface of the deflector body 1, then moves along the inclination direction of the guide blades 2, and is finally discharged from the lower end surface of the deflector body 1. Since the guide blades 2 are arranged circumferentially inclined, the high-pressure air will rotate circumferentially along the spiral guide holes 14 after entering the guide holes 14 to form a high-pressure vortex airflow, thereby condensing the moisture in the high-pressure air and throwing out the condensed moisture to achieve the moisture separation effect of the high-pressure air. Similarly, other impurity components in the high-pressure air, such as oil, can also be separated in this way to improve the air filtering effect.

[0027] The guide blades 2 also have an inclination angle in the radial direction of the guide body 1, which, on the one hand, increases the air intake space of the guide hole 14, thereby increasing the air intake volume of the guide hole 14; on the other hand, it can also have a good guiding effect on the high-pressure air.

[0028] At the position of each guide blade 2, the circumferential side surface of the guide body 1 protrudes in the circumferential direction toward the position of the sealing ring 3, so that the diameter of the guide holes 14 between adjacent guide blades 2 gradually decreases in the direction of air circulation; since the diameter of the guide holes 14 gradually decreases in the direction of air circulation, when the high-pressure air enters the guide holes 14, it will be further compressed inside the guide holes 14, and after the pressure of the high-pressure air increases, the high-pressure air in the guide holes 14 will be accelerated, and the increase in flow speed is more conducive to the separation of moisture in the high-pressure air.

[0029] The upper part of the guide vane 2 is provided with a notch 5, so that the upper end surface of the guide body 1 is not directly connected to the sealing ring 3 through the guide vane 2, thereby reducing the volume of a part of the guide vane 2 and increasing the intake capacity of the guide hole 14 between adjacent guide vanes 2; and due to the notch design of the upper part of the guide vane 2, when the high-pressure air enters the guide hole 14 between the guide vanes 2, it can also reduce air damping, reduce air resistance, and improve the guiding effect. The notch 5 includes a notch slope 5.1 set on the guide vane 2, such as Figure 3 or Figure 4 As shown, the notched angle bevel 5.1 is inclined, and the inclination direction is downward from the position of the sealing ring 3 toward the position of the deflector body 1, so that the notched angle bevel 5.1 and the annular surface of the deflector body 1 form an acute angle structure. When the high-pressure air enters the notched angle 5, the notched angle bevel 5.1 can also guide the high-pressure air, and can guide the high-pressure air into the guide hole 14, thereby improving the guide effect of the deflector.

[0030] A positioning ring 6 is provided at the through hole position on the upper end face of the deflector body 1. The positioning ring 6 protrudes from the upper surface of the deflector body 1. The positioning ring 6 cooperates with the stepped through hole in the deflector to fix the deflector body 1. The through hole on the upper end face of the deflector body 1 is a smaller through hole, while the through hole on the lower end face of the deflector body 1 is a larger through hole. The inner wall of the through hole on the lower end face of the deflector body 1 is an inner peripheral annular surface 7, which is also an inclined surface, so that the end face diameter of the inner peripheral annular surface 7 (close to the lower end face of the deflector body 1) is larger, and the diameter on the side facing the positioning ring 6 is smaller, which can guide the installation of the filter element on the one hand, and fix the filter element on the other hand.

[0031] Example 2: Figures 1 to 6 A deflector of a filter and an air filter shown in the figure, the deflector comprises a deflector body 1, the deflector body 1 is disc-shaped, the middle part of the deflector body 1 is a stepped through hole, a plurality of guide blades 2 are arranged in the circumferential direction of the deflector body 1, the guide blades 2 are evenly arranged along the circumferential surface of the deflector body 1, and a sealing ring 3 is commonly arranged on the outer edge of all the guide blades 2, the sealing ring 3 is integrally formed with all the guide blades 2, and a guide hole 14 is formed between adjacent guide blades 2; on the upper end surface ( Figure 3 A convex ring 4 is provided (in the direction shown in the figure), and the radial dimension of the convex ring 4 is greater than the radial dimension of the sealing ring 3; the sealing ring 3 is used to cooperate with the mouth of the water cup 8, which can eliminate the gap between the outer edge of the guide blade 2 and the water cup 8, thereby improving the guide effect of the guide device and the water separation effect of the air.

[0032] like Figure 4 As shown, all the guide blades 2 are arranged obliquely, and the inclination direction is the same along the circumferential direction. Specifically, the guide blades 2 are inclined downward in the counterclockwise direction (the effect is the same in the clockwise direction). The guide blades 2 start from the upper end surface of the guide body 1, extend toward the lower end surface of the guide body 1 and in the circumferential direction, and are connected to the lower end surface. Figure 3 As shown, the guide blades 2 are also arranged tilted in the radial direction of the guide body 1, and the inclination direction of the guide blades 2 is arranged tilted downward from one side of the guide body 1 to one side of the sealing ring 3, and the radial inclination angle is 7° to 10°. The radial inclination angle in this embodiment is 8°.

[0033] When high-pressure air passes through the deflector body 1, the high-pressure air first enters the guide holes 14 between the guide blades 2 from the upper surface of the deflector body 1, then moves along the inclination direction of the guide blades 2, and is finally discharged from the lower end surface of the deflector body 1. Since the guide blades 2 are arranged circumferentially inclined, the high-pressure air will rotate circumferentially along the spiral guide holes 14 after entering the guide holes 14 to form a high-pressure vortex airflow, thereby condensing the moisture in the high-pressure air and throwing out the condensed moisture to achieve the moisture separation effect of the high-pressure air. Similarly, other impurity components in the high-pressure air, such as oil, can also be separated in this way to improve the air filtering effect.

[0034] The guide blades 2 also have an inclination angle in the radial direction of the guide body 1, which, on the one hand, increases the air intake space of the guide hole 14, thereby increasing the air intake volume of the guide hole 14; on the other hand, it can also have a good guiding effect on the high-pressure air.

[0035] At the position of each guide blade 2, the circumferential side surface of the guide body 1 protrudes in the circumferential direction toward the position of the sealing ring 3, so that the diameter of the guide holes 14 between adjacent guide blades 2 gradually decreases in the direction of air circulation; since the diameter of the guide holes 14 gradually decreases in the direction of air circulation, when the high-pressure air enters the guide holes 14, it will be further compressed inside the guide holes 14, and after the pressure of the high-pressure air increases, the high-pressure air in the guide holes 14 will be accelerated, and the increase in flow speed is more conducive to the separation of moisture in the high-pressure air.

[0036] The upper part of the guide vane 2 is provided with a notch 5, so that the upper end surface of the guide body 1 is not directly connected to the sealing ring 3 through the guide vane 2, thereby reducing the volume of a part of the guide vane 2 and increasing the intake capacity of the guide hole 14 between adjacent guide vanes 2; and due to the notch design of the upper part of the guide vane 2, when the high-pressure air enters the guide hole 14 between the guide vanes 2, it can also reduce air damping, reduce air resistance, and improve the guiding effect. The notch 5 includes a notch slope 5.1 set on the guide vane 2, such as Figure 3 or Figure 4 As shown, the notched angle bevel 5.1 is inclined, and the inclination direction is downward from the position of the sealing ring 3 toward the position of the deflector body 1, so that the notched angle bevel 5.1 and the annular surface of the deflector body 1 form an acute angle structure. When the high-pressure air enters the notched angle 5, the notched angle bevel 5.1 can also guide the high-pressure air, and can guide the high-pressure air into the guide hole 14, thereby improving the guide effect of the deflector.

[0037] A positioning ring 6 is provided at the through hole position on the upper end face of the deflector body 1. The positioning ring 6 protrudes from the upper surface of the deflector body 1. The positioning ring 6 cooperates with the stepped through hole in the deflector to fix the deflector body 1. The through hole on the upper end face of the deflector body 1 is a smaller through hole, while the through hole on the lower end face of the deflector body 1 is a larger through hole. The inner wall of the through hole on the lower end face of the deflector body 1 is an inner peripheral annular surface 7, which is also an inclined surface, so that the end face diameter of the inner peripheral annular surface 7 (close to the lower end face of the deflector body 1) is larger, and the diameter on the side facing the positioning ring 6 is smaller, which can guide the installation of the filter element 11 on the one hand, and fix the filter element 11 on the other hand.

[0038] like Figures 5 and 6 An air filter shown in the figure comprises a ventilation structure 13, a water cup 8, an umbrella-shaped fixing seat 10 and the above-mentioned filter, wherein the ventilation structure 13 comprises an air inlet 13.1 and an air outlet 13.2, and an axial hole 15 connected to the umbrella-shaped fixing seat 10, a step hole 16 is arranged at the bottom of the axial hole 15, and the step hole 16 cooperates with the positioning ring 6 on the deflector body 1, and the upper part of the umbrella-shaped fixing seat 10 is a connecting shaft 17 structure adapted to the axial hole 15, and the connecting shaft 17 of the umbrella-shaped fixing seat 10 passes through the through hole on the deflector body 1, and the connecting shaft 17 and the through hole can be arranged to be threadedly connected, when the umbrella-shaped fixing seat When 10 is connected and fixed to the axial hole 15, it is also connected and fixed to the deflector body 1 at the same time. The middle part of the umbrella-shaped fixing seat 10 is a slender shaft 18, and the bottom of the slender shaft 18 is a circular tray 19 structure. A filter element 11 is arranged between the deflector and the tray 19. One end of the filter element 11 abuts on the tray 19, and the other end abuts against the through hole and the inner peripheral annular surface 7 on the lower end face of the deflector body 1, and the slender shaft 18 of the umbrella-shaped fixing seat 10 is located inside the filter element 11, and a cavity structure is formed between the slender shaft 18 and the filter element 11, so that the umbrella-shaped fixing seat 10 fixes the filter element 11, the deflector and the ventilation structure 13 together to form an integral structure.

[0039] It should be noted that the interior of the connecting shaft 17 of the umbrella-shaped fixing seat 10 is hollow, and four circumferentially evenly distributed air holes 12 are also provided in the hollow body inside the connecting shaft 17. The air holes 12 are connected to the cavity formed by the slender shaft 18 and the filter element 11, and the connecting shaft 17 is connected to the axial hole 15, and the axial hole 15 is connected to the air outlet of the ventilation structure 13. At the same time, the air inlet 13.1 of the ventilation structure 13 is connected to the guide hole 14 at the guide blade 2 on the guide device, thereby forming an air flow channel between the air inlet 13.1 and the air outlet 13.2.

[0040] A water cup 8 is also fixedly connected to the bottom of the ventilation structure 13, and the water cup 8 is sealed and connected to the ventilation structure 13 through a sealing ring. A ring groove 9 is designed to be sunken at the cup mouth of the water cup 8, and the bottom of the ring groove 9 fits with the bottom surface of the convex ring 4 on the deflector body 1, and the outer peripheral surface of the sealing ring 3 on the deflector body 1 fits with the inner wall of the water cup 8 to form a sealing structure. Through the structure of the sealing ring 3 and the convex ring 4, the matching gap between the cup mouth of the water cup 8 and the deflector is eliminated, so that the high-pressure airflow flows completely through the guide holes 14 between the guide blades 2. A drain port 20 is provided at the bottom of the water cup 8, and when separated water is generated in the water cup 8, it can be discharged in time through the drain port 8.

[0041] After the high-pressure airflow passes through the air inlet 13.1, it flows to the upper side of the guide vane 2 of the guide device, and then the high-pressure gas forms a high-speed vortex airflow after passing through the guide vane 2, and the water and oil in the high-pressure air are thrown onto the inner wall of the water cup 8. After entering the water cup 8, the high-pressure air passes through the filter element 11 and enters the cavity formed by the filter element 11 and the slender shaft 18, and then enters the axial hole 15 of the ventilation structure 13 through the vent hole 12 at the connecting shaft 17 of the umbrella-shaped fixing seat 10, and finally is discharged from the air outlet 13.2. The separated water and oil slide along the inner wall of the water cup 8 to the bottom of the water cup, and then are discharged through the drain port 20.

Claims

1. A flow guide for a filter, characterized in that: The invention comprises a guide device body, wherein a plurality of guide blades are arranged on the circumference of the guide blade, a sealing ring which is integrally formed with the guide blade is arranged on the outer circumference of the guide blade, and a convex ring is arranged on the outer circumference of the sealing ring.

2. A flow guide for a filter according to claim 1, characterized in that: The guide vanes are arranged circumferentially and radially and tilted, and the radial tilting direction is tilted downward from the guide body to the sealing ring.

3. A flow guide for a filter according to claim 2, characterized in that: Corresponding to each of the guide vanes, the guide device body gradually approaches the sealing ring along the annular inclination direction of the guide vane.

4. A flow guide for a filter according to claim 3, characterized in that: The guide blade is also provided with a notch, and the notch includes a notch slope, and the notch slope forms an acute angle with the outer peripheral surface of the guide body.

5. A flow guide for a filter according to any one of claims 1 to 4, characterized in that: The deflector body is also provided with a positioning ring, and the positioning ring protrudes from the surface of the deflector body.

6. A flow guide for a filter according to claim 5, characterized in that: The side of the guide device body away from the guide vane is an inner peripheral annular surface, and the ring opening of the inner peripheral annular surface gradually decreases toward the side of the positioning ring.

7. An air filter, characterized in that: It comprises the deflector as claimed in claim 6, and also comprises a water cup, wherein a ring groove is provided on the cup mouth of the water cup, the ring groove is adaptively connected to the convex ring, and the sealing ring is fitted with the inner wall of the water cup.

8. An air filter according to claim 7, characterized in that: It also includes an umbrella-shaped fixing seat, which passes through the deflector. A filter element is arranged between the umbrella-shaped fixing seat and the deflector. One end of the filter element abuts against the umbrella-shaped fixing seat, and the other end abuts against the position of the inner peripheral annular surface of the deflector.

9. An air filter according to claim 8, characterized in that: A plurality of ventilation holes are arranged inside the umbrella-shaped fixing seat.

10. An air filter according to claim 8 or 9, characterized in that: It also includes a ventilation structure, which includes an air inlet and an air outlet. The air inlet is connected to the water cup through a deflector, and the air outlet is connected to the filter element through an umbrella-shaped fixing seat.

Images