Combined filtering and drying cylinder

Abstract

The utility model relates to a combined type filtering and drying cylinder which comprises a cylinder shell, an inner container shell, a connecting disc, a water absorption assembly, a fine filtering assembly and a rough filtering assembly, the inner container shell and the connecting disc are arranged in the cylinder shell, the water absorption assembly is arranged in the inner container shell, the connecting disc is provided with an air inlet channel and an air outlet channel, and the fine filtering assembly is of a hollow annular structure. The fine filtration assembly is arranged between the cylinder outer shell and the inner container shell in a sleeved mode and is divided into an inner cavity and an outer cavity through the fine filtration assembly, the inner container shell is connected with the rough filtration assembly in a clamped mode, the rough filtration assembly is arranged between the air inlet channel and the inner cavity, and the water absorption assembly is arranged between the outer cavity and the air outlet channel. Meanwhile, the filtering area of the fine filtering assembly is increased, oil molecules in compressed air are adsorbed and intercepted more thoroughly, the influence of the oil molecules on the molecular sieve is reduced, and the service life of the drying cylinder is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of air dryer, especially relates to a combined filter drying cylinder. BACKGROUND

[0002] The drying cylinder is usually used as a pre-treatment device, mainly used for cleaning and drying compressed air in a pneumatic system, the drying barrel is usually provided with a filter element for filtering oil stains and a molecular sieve for adsorbing moisture in the gas, in the traditional drying cylinder, the filtering area of the filter element is small, and the ability of adsorbing oil molecules is limited, so that part of the oil molecules enter the molecular sieve, affecting the ability of the molecular sieve to adsorb moisture, reducing the service life of the drying cylinder, in order to improve the ability of adsorbing and intercepting oil molecules, the structure of the drying cylinder needs to be modified. SUMMARY

[0003] In order to overcome the defects of the background art, the utility model adopts the technical scheme: a combined filter drying cylinder, which comprises a cylinder shell, an inner container shell and a connecting disc arranged in the cylinder shell, and a water absorption assembly arranged in the inner container shell, the connecting disc is provided with an air inlet and an air outlet, and further comprises a fine filter assembly and a coarse filter assembly, the fine filter assembly has a hollow ring structure, the fine filter assembly is sleeved between the cylinder shell and the inner container shell, and the fine filter assembly divides the space into an inner chamber and an outer chamber, the inner container shell is connected with the coarse filter assembly arranged between the air inlet and the inner chamber through clamping, and the water absorption assembly is arranged between the outer chamber and the air outlet.

[0004] According to the above technical scheme, the compressed gas enters the drying cylinder through the air inlet, passes through the coarse filter assembly, the inner chamber, the fine filter assembly, the outer chamber and the water absorption assembly, and then flows out from the air outlet, compared with the traditional drying cylinder, the combined filter drying cylinder further comprises the coarse filter assembly, and the inner chamber is longitudinally lengthened, so that the filtering area of the fine filter assembly is increased, the adsorption and interception of oil molecules in the compressed air are more complete, the influence of oil molecules on the molecular sieve is reduced, and the service life of the drying cylinder is prolonged.

[0005] The utility model further sets up that the inner container shell is provided with an inner ring part and an outer ring part, the inner container shell is connected to the connecting disc through the inner ring part, and is connected to the cylinder shell through the outer ring part, the water absorption assembly is arranged in the inner ring part, the fine filter assembly and the coarse filter assembly are respectively sleeved at the upper and lower ends of the inner ring part, and the coarse filter assembly is arranged between the inner ring part and the outer ring part.

[0006] Further, the outer ring part is provided with a plurality of inner holes arranged in a circle at the inner chamber, and the outer side of the outer ring part is provided with a first sealing groove for mounting a sealing ring.

[0007] According to the above technical scheme, the inner container shell is connected to the cylinder shell through the first sealing groove, so that the gas in the air inlet can only flow to the inner chamber through the inner holes, the airflow can not bypass the coarse filter assembly and the fine filter assembly, and the stability of the filtering structure is maintained.

[0008] The utility model further sets up, the coarse filter subassembly includes first spring, metal filter core and open check ring, the inner ring part and outer ring part all are equipped with the clamping groove of being suitable for open check ring, metal filter core is through open check ring and is connected between the inner ring part and the outer ring part, and first spring is equipped between the outer ring part and metal filter core.

[0009] Further, the inner ring part and the outer ring part are respectively provided with clamping groove clamping blocks matched with the open check ring.

[0010] The metal filter core is pressed into a ring structure by aluminum foil or stainless steel wire mesh, has high void ratio, makes the airflow rate high, and meets the filtering requirements for impurities and oil stains.

[0011] The utility model further sets up, the metal filter core is aluminum foil filter core, and the upper and lower sides of the aluminum foil filter core are provided with aluminum foil baffle, and the aluminum foil baffle is provided with mesh hole.

[0012] The aluminum foil filter core has low structural strength, and the aluminum foil baffle is used to increase the structural strength, so that irreversible deformation of the aluminum foil filter core during installation is avoided, and the stability of the filtering structure is maintained.

[0013] The utility model further sets up, the fine filter subassembly includes second spring, gland, glass fiber filter, base and V type sealing ring that distribute in sequence from top to bottom, and second spring is equipped between the barrel shell and the gland, and the base is sealedly connected with the outer ring part through V type sealing ring.

[0014] Further, the glass fiber filter includes a shroud, a glass fiber filter core, and a side sleeve, the glass fiber filter core is sleeved outside the shroud, the glass fiber filter core and the shroud are clamped at both ends by the side sleeve, and the shroud is provided with circumferentially distributed side holes.

[0015] The second spring provides a force to the gland in the direction of the connecting disc, so that the both ends of the glass fiber filter core are sealedly connected with the gland and the base through the sealing gasket, the base is sealedly connected with the inner container shell through the V type sealing ring, the force of the second spring seals the glass fiber filter while sealingly connecting the inner container shell with the connecting disc, the shroud and the side sleeve form a circular groove for installing the glass fiber filter core, the support of the shroud avoids the force of the second spring pressing the glass fiber filter core, and the stability of the glass fiber filter core structure is maintained.

[0016] The utility model further sets up, the inner container shell is provided with a spring seat at the top of the inner ring part, the water suction assembly includes third spring, upper baffle, molecular sieve and filter sheet that distribute in sequence from top to bottom, the third spring is equipped between the spring seat and the upper baffle, and the spring seat and the upper baffle are both provided with air holes.

[0017] Adopting the technical scheme, the molecular sieve is always in a cylindrical structure through the force of the third spring, and the molecular sieve particles are prevented from overflowing out through the clamping of the upper baffle and the filter sheet.

[0018] Compared with the prior art, the utility model has the advantages of:

[0019] Compared with the traditional drying cylinder, the utility model adds the coarse filter assembly, and the inner chamber is longitudinally lengthened, so that the filtering area of the fine filter assembly is increased, oil molecules in the compressed air are more completely adsorbed and intercepted, the influence of the oil molecules on the molecular sieve is reduced, and the service life of the drying cylinder is prolonged.

[0020] The utility model embodiment is further described below with reference to the drawings. DRAWINGS

[0021] Figure 1 It is a sectional view of the utility model;

[0022] Figure 2 It is a sectional view of the inner container shell of the utility model;

[0023] Figure 3 It is a sectional view of the utility model; Figure 1 It is a local enlarged view of A in the middle;

[0024] Figure 4 It is an exploded view of the fine filter assembly of the utility model;

[0025] Figure 5 It is a sectional view of the utility model; Figure 1 It is a local enlarged view of B in the middle;

[0026] Figure 6 It is a structural schematic view of the flow path of the compressed gas into the utility model;

[0027] Wherein: 1 - cylinder shell, 2 - inner container shell, 3 - connecting disc, 4 - coarse filter assembly, 5 - fine filter assembly, 6 - water absorption assembly, 11 - air inlet, 12 - air outlet, 13 - inner chamber, 14 - outer chamber, 21 - inner ring part, 22 - outer ring part, 23 - inner hole, 24 - first sealing groove, 25 - clamping groove, 26 - clamping block, 27 - spring seat, 41 - first spring, 42 - metal filter core, 43 - open blocking ring, 44 - aluminum foil baffle, 45 - mesh, 51 - second spring, 52 - gland, 53 - glass fiber filter, 54 - base, 55 - V-shaped sealing ring, 56 - shield, 57 - glass fiber filter core, 58 - side sleeve, 59 - sealing gasket, 61 - third spring, 62 - upper baffle, 63 - molecular sieve, 64 - filter sheet; DETAILED DESCRIPTION

[0028] As Figure 1 shown, the utility model provides a combined filter drying cylinder, including cylinder shell 1, and be equipped with inner container shell 2 and connecting disc 3 in cylinder shell 1, and be equipped with water absorption subassembly 6 in inner container shell 2, connecting disc 3 is equipped with air inlet 11 and air outlet 12, still including fine filter assembly 5 and rough filter assembly 4, fine filter assembly 5 is hollow annular structure, fine filter assembly 5 is set between cylinder shell 1 and inner container shell 2, and is divided into inner chamber 13 and outer chamber 14 by fine filter assembly 5, inner container shell 2 is clamped and is equipped with rough filter assembly 4 between air inlet 11 and inner chamber 13, water absorption subassembly 6 is equipped between outer chamber 14 and air outlet 12.

[0029] As Figure 2 shown, in the embodiment, inner container shell 2 is equipped with inner ring part 21 and outer ring part 22, inner container shell 2 is sealedly connected to connecting disc 3 through inner ring part 21, is sealedly connected to cylinder shell 1 through outer ring part 22, water absorption subassembly 6 is equipped in inner ring part 21, fine filter assembly 5, rough filter assembly 4 are respectively set in the upper and lower ends of inner ring part 21, and rough filter assembly 4 is equipped between inner ring part 21 and outer ring part 22, outer ring part 22 is located at inner chamber 13 and is equipped with the inner hole 23 of circumferential distribution, and the outside of outer ring part 22 is equipped with the first sealing groove 24 for installing sealing ring.

[0030] As Figure 3 shown, in the embodiment, rough filter assembly 4 includes first spring 41, metal filter core 42 and open check ring 43, inner ring part 21 and outer ring part 22 are equipped with the clamping groove 25 matched with open check ring 43, metal filter core 42 is clamped between inner ring part 21 and outer ring part 22 through open check ring 43, and first spring 41 is equipped between outer ring part 22 and metal filter core 42, inner ring part 21 and outer ring part 22 are equipped with the clamping groove 25 matched with open check ring 43 and clamping block 26, metal filter core 42 is aluminum foil filter core, the upper and lower sides of aluminum foil filter core are equipped with aluminum foil baffle 44, and aluminum foil baffle 44 is equipped with mesh 45.

[0031] As Figure 4 shown, in the embodiment, fine filter assembly 5 includes second spring 51, gland 52, glass fiber filter 53, base 54 and V-shaped sealing ring 55 sequentially distributed from top to bottom, wherein, second spring 51 is equipped between cylinder shell 1 and gland 52, the upper and lower ends of glass fiber filter 53 are sealedly connected gland 52 and base 54 through sealing pad 59, base 54 is vulcanized and fixed with V-shaped sealing ring 55, base 54 is sealedly connected to outer ring part 22 through V-shaped sealing ring 55, glass fiber filter 53 includes shield 56, glass fiber filter core 57 and side sleeve 58, glass fiber filter core 57 is set outside shield 56, and the two ends of glass fiber filter core 57 and shield 56 are clamped with side sleeve 58, and shield 56 is equipped with circumferentially distributed side hole.

[0032] AsFigure 3 、 5 In the embodiment, the inner container shell 2 is provided with a spring seat 27 at the top of the inner ring part 21, the water absorption assembly 6 comprises a third spring 61, an upper baffle 62, a molecular sieve 63 and a filter sheet 64 distributed in sequence from top to bottom, the third spring 61 is arranged between the spring seat 27 and the upper baffle 62, and the spring seat 27 and the upper baffle 62 are both provided with air permeable holes.

[0033] The working principle of the utility model is that compressed gas enters the drying cylinder through the air inlet 11, the impurities and oil stains in the compressed gas are coarsely filtered through the metal filter element 42, passes through the outer ring part 22 of the inner container shell 2 to the inner cavity 13 through the inner hole 23, enters the glass fiber filter element 57 through the side hole and the protective cover 56, the oil in the compressed gas is finely filtered through the glass fiber filter element 57, and then moves from the outer cavity 14 to the inner side of the inner ring part 21 of the inner container shell 2, after the water in the compressed gas is absorbed by the molecular sieve 63, the gas flows out from the air outlet 12, thereby completing the filtration of the gas.

[0034] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A combined filter-dryer cartridge, comprising a cartridge shell (1), an inner liner shell (2) and a connecting plate (3) arranged in the cartridge shell (1), and a water absorption assembly (6) arranged in the inner liner shell (2), the connecting plate (3) being provided with an air inlet channel (11) and an air outlet channel (12), characterized in that, Further comprising a fine filter assembly (5) and a coarse filter assembly (4), the fine filter assembly (5) is a hollow ring structure, the fine filter assembly (5) is sleeved between the cylinder shell (1) and the inner shell (2), and the inner chamber (13) and the outer chamber (14) are divided by the fine filter assembly (5), the inner shell (2) is clamped with the coarse filter assembly (4) arranged between the air inlet (11) and the inner chamber (13), and the water absorption assembly (6) is arranged between the outer chamber (14) and the air outlet (12).

2. The combined filter-drying cartridge according to claim 1, characterized in that: The inner shell (2) is provided with an inner ring part (21) and an outer ring part (22), the inner shell (2) is sealingly connected to the connecting disc (3) through the inner ring part (21), and is sealingly connected to the cylinder shell (1) through the outer ring part (22), the water absorption assembly (6) is arranged in the inner ring part (21), and the fine filter assembly (5) and the coarse filter assembly (4) are respectively sleeved on the upper and lower ends of the inner ring part (21), and the coarse filter assembly (4) is arranged between the inner ring part (21) and the outer ring part (22).

3. A combined filter-drier cartridge according to claim 2, wherein: The outer ring part (22) is provided with a plurality of inner holes (23) arranged in a circle at the inner chamber (13), and the outer side of the outer ring part (22) is provided with a first sealing groove (24) for mounting a sealing ring.

4. The combined filter-drier cartridge of claim 3 wherein: The coarse filter assembly (4) comprises a first spring (41), a metal filter core (42) and an open blocking ring (43), the inner ring part (21) and the outer ring part (22) are both provided with a clamping groove (25) matched with the open blocking ring (43), the metal filter core (42) is clamped between the inner ring part (21) and the outer ring part (22) through the open blocking ring (43), and the first spring (41) is arranged between the outer ring part (22) and the metal filter core (42).

5. A combined filter-drier cartridge according to claim 4 wherein: The inner ring part (21) and the outer ring part (22) are respectively provided with a clamping groove (25) and a clamping block (26) matched with the open blocking ring (43).

6. The combined filter-drier cartridge of claim 4 wherein: The metal filter core (42) is an aluminum foil filter core, the upper and lower sides of the aluminum foil filter core are provided with aluminum foil baffles (44), and the aluminum foil baffles (44) are provided with mesh holes (45).

7. The combined filter-drier cartridge of claim 3 wherein: The fine filter assembly (5) comprises a second spring (51), a gland (52), a glass fiber filter (53), a base (54) and a V-shaped sealing ring (55) arranged in sequence from top to bottom, and the second spring (51) is arranged between the cylinder shell (1) and the gland (52), and the base (54) is sealingly connected to the outer ring part (22) through the V-shaped sealing ring (55).

8. A combined filter-drier cartridge according to claim 7, wherein: The glass fiber filter (53) comprises a shield (56), a glass fiber filter core (57) and a side sleeve (58), the glass fiber filter core (57) is sleeved outside the shield (56), the two ends of the glass fiber filter core (57) and the shield (56) are clamped with the side sleeve (58), and the shield (56) is provided with a plurality of side holes arranged in a circle.

9. The combined filter-drier cartridge of claim 3 wherein: The inner shell (2) is provided with a spring seat (27) at the top of the inner ring part (21), the water absorption assembly (6) comprises a third spring (61), an upper baffle (62), a molecular sieve (63) and a filter sheet (64) arranged in sequence from top to bottom, the third spring (61) is arranged between the spring seat (27) and the upper baffle (62), and the spring seat (27) and the upper baffle (62) are both provided with air permeable holes.

Images