Efficient compressed air precision filter

Abstract

The utility model provides an efficient compressed air precision filter and belongs to the technical field of filters. The efficient compressed air precision filter comprises a filter body, a compression mechanism and a flow limiting mechanism, the filter body comprises a filter cartridge, a pair of connecting grooves are formed in the outer side of the filter cartridge, an air inlet pipe and an air outlet pipe are installed in the connecting grooves respectively, flanges are installed at the free ends of the air inlet pipe and the air outlet pipe, and the flow limiting mechanism comprises a connecting plate. The connecting plate is installed in the air inlet pipe, the connecting cover is installed in the air inlet pipe, a groove is formed in one end of the connecting cover, a circular-truncated-cone-shaped groove is formed in the other end of the connecting cover, the groove is connected with the small-radius end of the circular-truncated-cone-shaped groove, a baffle is arranged in the circular-truncated-cone-shaped groove in a sliding mode, and the side face of the baffle is attached to the groove. According to the technical scheme, through the use of the flow limiting mechanism, airflow backflow can be prevented, pressurized gas can be smoothly filtered, and the gas filtering effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a high-efficiency compressed air precision filter. Background Art

[0002] The filter can filter the air entering it by filtering, intercepting, inertia, diffusion, gravity and other effects of the filter element, effectively removing impurities such as moisture, dust particles, oil mist, etc. in the air, so that the air enters clean and dry, and the reliability of the pneumatic setting is improved.

[0003] Existing filters generally have standard efficiency and can only filter out a certain amount of air per unit time. Faced with complex usage conditions, it is impossible to improve efficiency in a short period of time. For example, a high-efficiency compressed air precision filter with a Chinese publication number of CN218687581U comprises: a tank body, the tank body is provided with an air inlet and an air outlet, the interior of the tank body is provided with an upper partition and a lower partition, a filter element is installed between the upper partition and the lower partition; a capsule body, the bottom end of the capsule body is provided with a sealing plate, the sealing plate is in contact with the inner wall of the tank body, the top of the capsule body is provided with a connecting pipe, the connecting pipe passes through the tank body, the connecting pipe is connected to a three-way pipe, one end of the three-way pipe is connected to a gas filling pipe, and the other end of the three-way pipe is connected to a pressure reducing pipe.

[0004] This technical solution adds a pressurizing structure, which presses down the sealing plate through the expansion of the bladder, so that the effective volume inside the tank body is reduced, thereby achieving a pressurizing effect; however, the air inlet of this technical solution does not have a one-way mechanism. Therefore, when the tank body is pressurized, the gas in the tank body may flow out reversely through the air inlet due to the increased pressure. In order to prevent this situation, it is necessary to increase the input pressure of the gas transmission device so that the pressure is greater than the pressure in the tank body. However, the input pressure increases gradually. When it does not exceed the tank body pressure, the gas in the tank body may still flow back through the air inlet, resulting in the gas in the tank body not passing through the filter element, thereby affecting the filtration of the gas. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a high-efficiency compressed air precision filter.

[0006] The utility model is achieved in this way:

[0007] A high-efficiency compressed air precision filter comprises a filter body, a compression mechanism, and a flow limiting mechanism. The filter body comprises a filter cartridge, a pair of connecting grooves are provided on the outer side of the filter cartridge, an air inlet pipe and an air outlet pipe are respectively installed in the pair of connecting grooves, and flanges are installed at the free ends of the air inlet pipe and the air outlet pipe. The flow limiting mechanism comprises a connecting plate, and the connecting plate is installed inside the air inlet pipe. A plurality of air holes are provided on one side of the connecting plate. A connecting cover is installed inside the air inlet pipe, a slot is provided at one end of the connecting cover, a truncated cone groove is provided at the other end of the connecting cover, and the slot is connected to the end with a smaller radius of the truncated cone groove, a baffle is slid inside the truncated cone groove, and the side of the baffle is in contact with the slot, a spring is connected between the baffle and the connecting plate, and the compression mechanism is installed on the top of the filter cartridge.

[0008] Furthermore, a sealing ring is installed on the outer side of the baffle, and a pair of limit blocks are installed on one end of the connecting cover, and the baffle and the pair of limit blocks are abutted against each other.

[0009] The beneficial effect of adopting the above-mentioned further scheme is that the air inlet pipe is used to input the gas to be filtered, and the air outlet pipe is used to discharge the filtered gas. The compression mechanism is used to reduce the space in the filter cartridge, thereby increasing the air pressure in the filter cartridge. The gas in the filter cartridge will squeeze the baffle plate, causing it to collide with a pair of limit blocks, thereby blocking the slot. At this time, the gas in the filter cartridge cannot flow back from the air inlet pipe, so that the pressurized gas can be filtered smoothly, thereby improving the filtering effect on the gas.

[0010] Furthermore, the compression mechanism includes a cylinder cover, which is installed on the top of the filter cylinder. An electric telescopic rod is installed on the top of the cylinder cover. A piston is provided below the cylinder cover. The piston is connected to the telescopic end of the electric telescopic rod, and the side of the piston is in contact with the inner wall of the filter cylinder.

[0011] Furthermore, a bellows is connected between the top of the piston and the bottom of the cylinder cover, and the bellows is sleeved on the outside of the telescopic end of the electric telescopic rod.

[0012] The beneficial effect of adopting the above further scheme is that the extension and retraction of the electric telescopic rod is used to drive the movement of the piston, thereby changing the space inside the filter cartridge, reducing the effective volume, and thus achieving the purpose of pressurization, and using a bellows to cover the gap between the telescopic end of the electric telescopic rod and the cartridge cover, so that gas cannot flow out of the gap.

[0013] Furthermore, a pair of first fixing blocks are installed on the outer side of the cartridge cover, and a pair of second fixing blocks are installed on the outer side of the top end of the filter cartridge. The tops of the first fixing blocks and the second fixing blocks are both provided with fixing holes, screws are connected between the fixing holes, and nuts are engaged with the outer threads of the screws.

[0014] Furthermore, a fixing plate and a support frame are installed inside the filter cartridge, a pair of mounting holes are opened on the top of the fixing plate, filter elements are installed in the mounting holes, the bottom of the filter element is placed on the top of the support frame, and the air inlet pipe and the air outlet pipe are respectively located above and below the fixing plate.

[0015] The beneficial effect of adopting the above further scheme is that the gas flowing in from the air inlet pipe will enter the filter element from the upper hole of the filter element, flow out through the filter element, and then flow out through the air outlet pipe, thereby achieving the purpose of filtering the gas.

[0016] Furthermore, a pair of limiting plates are installed on the inner wall of the filter cartridge, a pair of limiting grooves are opened at the bottom edge of the fixed plate, the limiting plates slide in the limiting grooves, and a sealing ring is installed on the side of the fixed plate.

[0017] The beneficial effect of adopting the above further scheme is that the cartridge cover is fixed to the top of the filter cartridge by means of screws and nuts, so the user can use a tool to unscrew the nut and then remove the cartridge cover. Since the fixing plate is snap-fitted and installed in the filter cartridge, when the cartridge cover is removed, the fixing plate and the filter element can be removed to achieve the purpose of cleaning the filter element.

[0018] Furthermore, a water outlet groove is provided at the bottom center of the filter cartridge, a water outlet pipe is connected to one side of the water outlet groove, and a valve body is installed at the bottom end of the water outlet pipe.

[0019] The beneficial effect of adopting the above further solution is that the filtration will remove moisture in the air, and the moisture will accumulate at the inner bottom of the filter cartridge. When the valve body is opened, the moisture will flow out through the outlet pipe, thereby achieving the purpose of drainage.

[0020] The beneficial effect of the utility model is that the utility model obtains a high-efficiency compressed air precision filter through the above-mentioned design, and the technical solution utilizes the flow direction of the gas to change the activity mode of the baffle, thereby achieving the purpose of preventing the backflow of the airflow without affecting the input gas, so that the pressurized gas can be smoothly filtered to improve the filtering effect of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A three-dimensional structural schematic diagram of a high-efficiency compressed air precision filter provided by the utility model;

[0023] Figure 2 This is a schematic diagram of the explosion structure of the high-efficiency compressed air precision filter provided by the utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure of structure A in the middle;

[0025] Figure 4 A schematic diagram of the cross-sectional structure of a high-efficiency compressed air precision filter provided by the utility model;

[0026] Figure 5 for Figure 4 A schematic diagram of the structure of structure B in the middle;

[0027] Figure 6 for Figure 4 Schematic diagram of the enlarged structure of the C structure.

[0028] In the figure: 100, filter body; 1001, filter cartridge; 1002, air inlet pipe; 1003, air outlet pipe; 1004, flange; 1005, fixing plate; 1006, support frame; 1007, filter element; 1008, water outlet pipe; 1009, valve body; 1010, second fixing block; 1011, fixing hole; 1012, limiting plate; 200, compression mechanism; 2001, cylinder cover; 2002, electric telescopic rod; 2003, piston; 2004, bellows; 2005, first fixing block; 300, flow limiting mechanism; 3001, connecting plate; 3002, spring; 3003, baffle; 3004, connecting cover; 3005, limiting block; 3006, air hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1 of the utility model high efficiency compressed air precision filter

[0032] The utility model provides the following technical solutions: Figure 1-Figure 6 , including a filter body 100, a compression mechanism 200, and a flow limiting mechanism 300. The filter body 100 includes a filter cartridge 1001. A pair of connecting grooves are provided on the outer side of the filter cartridge 1001. An air inlet pipe 1002 and an air outlet pipe 1003 are respectively installed in the pair of connecting grooves. Flanges 1004 are installed at the free ends of the air inlet pipe 1002 and the air outlet pipe 1003. The flow limiting mechanism 300 includes a connecting plate 3001. The connecting plate 3001 is installed inside the air inlet pipe 1002. A plurality of air holes 3006 are provided on one side of the connecting plate 3001. A connecting cover 3004 is installed inside the air inlet pipe 1002, one end of the connecting cover 3004 is provided with a slot, the other end of the connecting cover 3004 is provided with a truncated cone groove, and the slot is connected to the end of the truncated cone groove with a smaller radius, a baffle 3003 is slid inside the truncated cone groove, the side of the baffle 3003 is fitted with the slot, a spring 3002 is connected between the baffle 3003 and the connecting plate 3001, the compression mechanism 200 is installed on the top of the filter cartridge 1001, a sealing ring is installed on the outside of the baffle 3003, and one end of the connecting cover 3004 is provided with A pair of limit blocks 3005, a baffle 3003 and a pair of limit blocks 3005 are counteracted, the air inlet pipe 1002 is used to input the gas to be filtered, and the air outlet pipe 1003 is used to discharge the filtered gas. The compression mechanism 200 is used to reduce the space in the filter cartridge 1001, thereby increasing the air pressure in the filter cartridge 1001. When the air pressure in the filter cartridge 1001 is greater than the input air pressure of the input device, the air in the filter cartridge 1001 may flow back from the air inlet pipe 1002. In order to prevent this from happening, the present technical solution uses the spring 3002 and the baffle 3003 to prevent the air from flowing back from the air inlet pipe 1002. 03. The connecting cover 3004 is used to solve the above problem. When the gas is input, the baffle 3003 will slide in the truncated cone groove. At this time, the gas will flow into the filter cartridge 1001 through the gap between the baffle 3003 and the truncated cone groove. If the air pressure in the filter cartridge 1001 is greater than the input air pressure, the gas in the filter cartridge 1001 will squeeze the baffle 3003, causing it to collide with a pair of limit blocks 3005 and block the slot. At this time, the gas in the filter cartridge 1001 cannot flow out through the air inlet pipe 1002, and the gas can only flow out from the air outlet pipe 1003.

[0033] Embodiment 2 of the utility model high efficiency compressed air precision filter

[0034] Reference Figure 1-Figure 6Specifically, the compression mechanism 200 includes a cartridge cover 2001, which is mounted on the top of the filter cartridge 1001. An electric telescopic rod 2002 is mounted on the top of the cartridge cover 2001. A piston 2003 is disposed below the cartridge cover 2001. The piston 2003 is connected to the telescopic end of the electric telescopic rod 2002. The side of the piston 2003 fits the inner wall of the filter cartridge 1001. A bellows 2004 is connected between the top of the piston 2003 and the bottom of the cartridge cover 2001. The bellows 2004 is sleeved on the outer side of the telescopic end of the electric telescopic rod 2002. The telescopic movement of the electric telescopic rod 2002 is used to drive the piston 2003 to move, thereby changing the space in the filter cartridge 1001, reducing the effective volume, and achieving the purpose of pressurization. The bellows 2004 is used to cover the gap between the telescopic end of the electric telescopic rod 2002 and the cartridge cover 2001, so that the gas cannot flow out of the gap.

[0035] Embodiment 3 of the utility model high efficiency compressed air precision filter

[0036] Reference Figure 1-Figure 6 Specifically, a fixing plate 1005 and a supporting frame 1006 are installed inside the filter cartridge 1001. A pair of mounting holes are opened on the top of the fixing plate 1005, and filter elements 1007 are installed in the mounting holes. The bottom of the filter element 1007 is placed on the top of the supporting frame 1006. The air inlet pipe 1002 and the air outlet pipe 1003 are respectively located above and below the fixing plate 1005. The gas flowing in from the air inlet pipe 1002 will enter the filter element from the hole above the filter element 1007, and flow out through the filter element 1007, and then flow out through the air outlet pipe 1003, thereby achieving the purpose of filtering the gas.

[0037] Specifically, the working principle of this type of high-efficiency compressed air precision filter is as follows: when in use, the gas delivery device and the exhaust pipeline are connected to the flanges 1004 of the air inlet pipe 1002 and the air outlet pipe 1003 respectively. While ensuring that the input air pressure of the gas delivery device is greater than the air pressure in the filter cartridge 1001, the gas will enter the filter element from the hole above the filter element 1007, flow out through the filter element 1007, and then flow out through the air outlet pipe 1003. If the filtering speed of the gas is to be accelerated, the electric telescopic rod 2002 can be used to move the piston 2003, thereby changing the space in the filter cartridge 1001 and reducing the effective volume, thereby achieving the purpose of pressurization. At the same time, the input air pressure of the gas delivery device is increased to be greater than the air pressure in the adjusted filter cartridge 1001, so that the gas passes through the filter element 1007 quickly to increase the filtering speed of the gas.

[0038] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. High efficiency compressed air precision filter, characterized by: The invention comprises a filter body (100), a compression mechanism (200), and a flow limiting mechanism (300), wherein the filter body (100) comprises a filter cartridge (1001), a pair of connection grooves are provided on the outer side of the filter cartridge (1001), an air inlet pipe (1002) and an air outlet pipe (1003) are respectively installed in the pair of connection grooves, and flanges (1004) are installed at the free ends of the air inlet pipe (1002) and the air outlet pipe (1003), and the flow limiting mechanism (300) comprises a connection plate (3001), and the connection plate (3001) is installed inside the air inlet pipe (1002), and the connection plate (3001) is installed inside the air inlet pipe (1002). 01) is provided with a plurality of air holes (3006), a connecting cover (3004) is installed inside the air inlet pipe (1002), one end of the connecting cover (3004) is provided with a slot, the other end of the connecting cover (3004) is provided with a truncated cone groove, and the slot is connected to the end of the truncated cone groove with a smaller radius, a baffle (3003) is slid inside the truncated cone groove, the side of the baffle (3003) is fitted with the slot, a spring (3002) is connected between the baffle (3003) and the connecting plate (3001), and the compression mechanism (200) is installed on the top of the filter cartridge (1001).

2. The high-efficiency compressed air precision filter according to claim 1, characterized in that: A sealing ring is installed on the outer side of the baffle (3003), and a pair of limit blocks (3005) are installed on one end of the connection cover (3004), and the baffle (3003) and the pair of limit blocks (3005) are abutted against each other.

3. The high-efficiency compressed air precision filter according to claim 1, characterized in that: The compression mechanism (200) comprises a cylinder cover (2001), wherein the cylinder cover (2001) is mounted on the top of the filter cylinder (1001), an electric telescopic rod (2002) is mounted on the top of the cylinder cover (2001), a piston (2003) is provided below the cylinder cover (2001), the piston (2003) is connected to the telescopic end of the electric telescopic rod (2002), and the side surface of the piston (2003) is in contact with the inner wall of the filter cylinder (1001).

4. The high-efficiency compressed air precision filter according to claim 3, characterized in that: A bellows (2004) is connected between the top of the piston (2003) and the bottom of the cylinder cover (2001), and the bellows (2004) is sleeved on the outside of the telescopic end of the electric telescopic rod (2002).

5. The high-efficiency compressed air precision filter according to claim 4, characterized in that: A pair of first fixing blocks (2005) are installed on the outer side of the cartridge cover (2001), and a pair of second fixing blocks (1010) are installed on the outer side of the top end of the filter cartridge (1001). The tops of the first fixing blocks (2005) and the second fixing blocks (1010) are both provided with fixing holes (1011), and screws are connected between the fixing holes (1011), and nuts are engaged with the outer threads of the screws.

6. The high-efficiency compressed air precision filter according to claim 1, characterized in that: A fixing plate (1005) and a support frame (1006) are installed inside the filter cartridge (1001); a pair of mounting holes are opened on the top of the fixing plate (1005); filter elements (1007) are installed in each of the mounting holes; the bottom of the filter element (1007) is placed on the top of the support frame (1006); and the air inlet pipe (1002) and the air outlet pipe (1003) are respectively located above and below the fixing plate (1005).

7. The high-efficiency compressed air precision filter according to claim 6, characterized in that: A pair of limiting plates (1012) are installed on the inner wall of the filter cartridge (1001), a pair of limiting grooves are opened at the bottom edge of the fixed plate (1005), the limiting plates (1012) slide in the limiting grooves, and a sealing ring is installed on the side of the fixed plate (1005).

8. The high-efficiency compressed air precision filter according to claim 7, characterized in that: A water outlet groove is provided at the center of the bottom of the filter cartridge (1001), one side of the water outlet groove is connected to a water outlet pipe (1008), and a valve body (1009) is installed at the bottom end of the water outlet pipe (1008).

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