Air filter box device of air compressor

Abstract

The invention relates to the field of air filters of air compressors, in particular to an air filter box device of an air compressor, which comprises a plugging mechanism, and the plugging mechanism is used for plugging an air inlet part when no air circulates; the locking mechanism is used for carrying out sealing treatment on other parts except for gas inlet and outlet parts in the device; the uniform distribution mechanism is used for uniformly distributing gas in the device; the air filter box device of the air compressor comprises a bottom cylinder, a plugging mechanism is fixedly installed on the bottom cylinder, an outer shell is fixedly installed on the outer end face of the plugging mechanism, a connecting frame is fixedly connected to the outer side of the outer shell, and a sealing cover is arranged at the end, away from the plugging mechanism, of the outer shell. Under the compression force of the spring, the bottom cylinder can penetrate through the round hole, so that the limiting effect on the perforated annular plate and the sealing cover is achieved, and meanwhile, compared with buckle type connection, the installation scheme is tighter and more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of air compressor air filters, and specifically to an air filter box device for an air compressor. Background Art

[0002] An air compressor air filter is composed of an air filter assembly and a filter element, and is externally connected to the intake valve of the air compressor through a joint and a threaded pipe, so as to filter dust, particles and other impurities in the incoming air. Different air compressor models can select the air filter to be installed according to the size of the incoming air volume.

[0003] The existing air filter box device for air compressors has the following problems: 1. Traditional air filter covers are closed by means of snap fasteners, but the air compressor will vibrate during operation, so the snap fastener connection is easily disengaged, resulting in dust spilling outwards; 2. Some filter elements are suspended and supported by support rods, but the support rods are inside the box body and fixed, so it is not convenient for operators to clean. Summary of the Invention

[0004] The present invention aims to provide an air filter box device for an air compressor to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: An air filter box device for an air compressor, including a plugging mechanism that plugs the intake part when there is no gas flow;

[0006] A locking mechanism that is used for closing the parts of the device other than the intake and exhaust;

[0007] An equalizing mechanism that is used for evenly distributing gas inside the device;

[0008] The outer end face of the plugging mechanism is fixedly installed with an outer housing, the outside of the outer housing is fixedly connected with a connecting frame, a closing cover is arranged at one end of the outer housing away from the plugging mechanism, the locking mechanism is arranged outside the outer housing, a filter element is arranged inside the outer housing, the equalizing mechanism is arranged inside the filter element, and an air outlet hole is opened at the bottom of the outer housing;

[0009] The locking mechanism includes a bent plate fixedly connected to the outside of the outer housing, a bottom notch is opened at the part where the bent plate is connected to the outer housing, an opening ring plate is arranged beside the bent plate, circular holes are opened on the surface of the opening ring plate, the opening ring plate is fixedly connected with the closing cover, a positioning plate is arranged at one end of the opening ring plate away from the bent plate, and the positioning plate is fixedly connected to the outside of the outer housing.

[0010] Preferably, a bottom cylinder is inserted into the top of the bent plate. A spring is fixedly connected to the outer side of the bottom cylinder. One end of the spring away from the bottom cylinder is fixedly connected to the top of the bent plate. The bottom of the bottom cylinder is press-fitted with a limit block, and the limit block is fixedly connected to the outer side of the outer shell. Elastic rings are symmetrically connected to both sides of the bottom cylinder. The bottom of the elastic ring is fixedly connected to a telescopic rod, and the telescopic rod is fixedly connected to the outer side of the outer shell.

[0011] Preferably, the equalization mechanism includes a filter element support column. The outer side of the filter element support column is fitted and adapted to the inner wall of the filter element. The filter element support column is arranged inside the outer shell. An adjustment component is arranged between the filter element support column and the filter element. An insertion rod is sleeved on the surface of the filter element support column. One end of the filter element support column away from the closed cover is fixedly connected to a hollow ring plate.

[0012] Preferably, an internal groove is formed on the surface of the filter element support column. A first fitting plate is inserted into the internal groove. One end of the first fitting plate away from the internal groove is fixedly connected to an internal connecting rod. The internal connecting rod penetrates through the surface of the filter element support column and extends to the other side. One end of the internal connecting rod away from the first fitting plate is fixedly connected to a second fitting plate. One end of the second fitting plate away from the internal connecting rod is fixedly connected to the insertion rod.

[0013] Preferably, the adjustment component includes a fixed ring track. The fixed ring track is fixedly connected to the inside of the outer shell. An opening is formed on one side of the fixed ring track away from the outer shell. A reset spring is fixedly connected inside the opening. One end of the reset spring away from the opening is fixedly connected to a dividing ball.

[0014] Preferably, a sliding connection strip is slidably fitted on one side of the fixed ring track away from the outer shell. The inner side of the sliding connection strip is fitted with the dividing ball. The two ends of the sliding connection strip are arc-shaped. One end of the sliding connection strip away from the dividing ball is fixedly connected to a socket ring. The inner side of the socket ring is fixedly connected to the outer side of the filter element support column.

[0015] Preferably, a spline column is press-fitted at one end of the sliding connection strip away from the dividing ball. One end of the spline column away from the sliding connection strip is press-fitted with the inner end face of the filter element. The spline column penetrates through the outer side of the socket ring and extends into its interior. An external connection plate is fixedly connected to the outer side of the spline column. One end of the external connection plate close to the socket ring is fixedly connected to an elastic strip, and one end of the elastic strip away from the external connection plate is fixedly connected to the socket ring.

[0016] Preferably, the blocking mechanism includes an air inlet pipe. The air inlet pipe is fixedly connected to the end face of the outer shell. A blocking head is press-fitted in the inner cavity of the air inlet pipe. One end of the blocking head away from the air inlet pipe is fixedly connected to a double-headed support rod, and one end of the double-headed support rod away from the blocking head is fixedly connected to a bent rod.

[0017] Preferably, an inner sliding strip is slidably fitted inside the end face of the outer housing. Both ends of the inner sliding strip are symmetrically connected with double-headed bent rods. The central part of the inner sliding strip is sleeved with an insertion rod. The side of the inner sliding strip away from the outer housing is fixedly connected to the outside of a hollow ring plate. One end of the insertion rod away from the filter element support column is fixedly connected with a rod connection ring. One end of the rod connection ring away from the insertion rod is in pressing fit with a bent rod.

[0018] Preferably, a first connecting rod is fixedly connected to the outside of the double-headed frame rod. One end of the first connecting rod away from the double-headed frame rod is inserted into a central clamping sleeve. One end of the central clamping sleeve away from the first connecting rod is fixedly connected with a second connecting rod. One end of the second connecting rod away from the central clamping sleeve is slidably fitted with an inner fixing rail. The inner fixing rail is fixedly connected to the inside of the air inlet pipe. A second magnetic block is fixedly connected to the inside of the inner fixing rail. One end of the second magnetic block away from the inner fixing rail is provided with a first magnetic block. The first magnetic block is fixedly connected to the second connecting rod.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. When the round hole opened on the surface of the perforated ring plate and the bottom of the bottom cylinder are on the same vertical plane, under the compression force of the spring, the bottom cylinder will pass through the round hole, thereby respectively playing a role in limiting the perforated ring plate and the sealing cover. At the same time, this installation scheme is tighter and more stable than the snap connection.

[0021] 2. One end of the spline column away from the filter element will press and fix the sliding connection strip. The outer end face of the sliding connection strip is connected to the filter element support column through a socket ring. Therefore, it plays a role in limiting and fixing the filter element support column to prevent it from shaking during operation.

[0022] 3. When the filter element support column rotates a certain angle, it will be subject to a rotational resistance, which is convenient for the operator to perform a comprehensive cleaning treatment on the filter element support column in the same orientation. At the same time, it also reminds the operator how many angles have been rotated and whether it is over-cleaned. At the same time, the rotational resistance also plays a role in preventing the filter element support column from rotating during the cleaning process.

[0023] 4. The plugging head will penetrate into the inside of the air inlet pipe, and the two will no longer fit together. At this time, compressed gas will enter the air inlet pipe. The plugging head plays a role in blocking the inside of the entire air filter box from the outside equipment when there is no gas flow, preventing the hydraulic oil or lubricating oil inside the outside equipment from leaking and flowing into the air filter box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic external structure diagram of an air filter box device of an air compressor of the present invention.

[0025] Figure 2 This is a full-section structural schematic diagram of the whole of the present invention.

[0026] Figure 3 This is a full-section structural schematic diagram of the locking mechanism of the present invention.

[0027] Figure 4 This is a structural schematic diagram of the locking mechanism of the present invention.

[0028] Figure 5 This is a full-section structural schematic diagram of the equalizing mechanism of the present invention.

[0029] Figure 6 This is an external structural schematic diagram of the equalizing mechanism of the present invention.

[0030] Figure 7 This is an internal structural schematic diagram of some components of the equalizing mechanism of the present invention.

[0031] Figure 8 For the present invention Figure 7 An enlarged structural schematic diagram of part A in it.

[0032] Figure 9 This is a sectional structural schematic diagram of some components of the equalizing mechanism of the present invention.

[0033] Figure 10 For the present invention Figure 9 An enlarged structural schematic diagram of part B in it.

[0034] Figure 11 This is an external structural schematic diagram of some components of the adjustment assembly of the present invention.

[0035] Figure 12 This is a full-section structural schematic diagram of the plugging mechanism of the present invention.

[0036] Figure 13 For the present invention Figure 12 An enlarged structural schematic diagram of part C in it.

[0037] Figure 14 This is a sectional structural schematic diagram of some components of the plugging mechanism of the present invention.

[0038] In the figure: 1. Outer housing; 2. Connecting frame; 3. Sealing cover; 4. Sealing mechanism; 5. Locking mechanism; 6. Filter element; 7. Equalizing mechanism; 51. Bent plate; 52. Bottom notch; 53. Open-hole ring plate; 54. Positioning plate; 55. Bottom cylinder; 56. Spring; 57. Limiting block; 58. Elastic ring; 59. Telescopic rod; 71. Filter element support column; 72. Adjusting component; 73. Inner groove; 74. First fitting plate; 75. Inner connecting rod; 76. Second fitting plate; 77. Hollow ring piece; 78. Insertion rod; 721. Fixed ring track; 722. Return spring; 723. Indexing ball; 724. Sliding strip; 725. Spline column; 726. Socket ring; 727. External connecting plate; 728. Elastic strip; 41. Air inlet pipe; 42. Sealing head; 43. Double-headed support rod; 44. Curved rod; 45. Rod connecting ring; 46. Inner sliding strip; 47. Double-headed bent rod; 48. First connecting rod; 49. Central socket; 40. Second connecting rod; 401. Inner fixing track; 402. First magnetic block; 403. Second magnetic block. Detailed implementation manners

[0039] Next, in combination with the accompanying drawings and the detailed implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be combined arbitrarily to form new embodiments. It should be known that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0040] Please refer to Figures 1 to 14 , the present invention provides a technical solution: As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, it includes a sealing mechanism 4, which seals the air inlet part when there is no gas flow;

[0041] a locking mechanism 5, which is used for sealing the parts other than the air inlet and outlet in the device;

[0042] an equalizing mechanism 7, which is used for evenly distributing the gas inside the device;

[0043] The outer end face of the sealing mechanism 4 is fixedly installed with an outer housing 1. The outside of the outer housing 1 is fixedly connected with a connecting frame 2. One end of the outer housing 1 away from the sealing mechanism 4 is provided with a sealing cover 3. The locking mechanism 5 is arranged on the outside of the outer housing 1. A filter element 6 is arranged inside the outer housing 1. The equalizing mechanism 7 is arranged inside the filter element 6. In addition, an air outlet hole is opened at the bottom of the outer housing 1.

[0044] Among them, the locking mechanism 5 includes a bent plate 51. The bent plate 51 is fixedly connected to the outer side of the outer shell 1. A bottom notch 52 is provided at the part where the bent plate 51 is connected to the outer shell 1. A perforated ring plate 53 is arranged beside the bent plate 51. The surface of the perforated ring plate 53 is provided with round holes. The perforated ring plate 53 is fixedly connected to the closed cover 3. A positioning plate 54 is arranged at one end of the perforated ring plate 53 away from the bent plate 51. The positioning plate 54 is fixedly connected to the outer side of the outer shell 1. A bottom cylinder 55 is inserted into the top of the bent plate 51. A spring 56 is fixedly connected to the outer side of the bottom cylinder 55. One end of the spring 56 away from the bottom cylinder 55 is fixedly connected to the top of the bent plate 51. By inserting the filter element 6 into the interior of the outer shell 1 along the outer side of the filter element support column 71, then fitting the closed cover 3 with the opening end face of the outer shell 1, and taking the end of the closed cover 3 away from the outer shell 1 as the perspective, rotating the closed cover 3 clockwise. At this time, the perforated ring plate 53 fixedly connected to the inner end face of the closed cover 3 will rotate clockwise accordingly and squeeze the bottom of the bottom cylinder 55. The surface of the perforated ring plate 53 in contact with the bottom cylinder 55 is a curved surface. The surface of the perforated ring plate 53 is provided with round holes. In addition, as the perforated ring plate 53 deflects clockwise, it will also be squeezed and fitted with the bottom notch 52 provided at the bottom of the bent plate 51. Then the bottom cylinder 55 squeezed by the perforated ring plate 53 will move upward through the top of the bent plate 51 and compress the spring 56 connected thereto. The spring 56 plays a role in resetting the bottom cylinder 55. Until the round hole on the surface of the perforated ring plate 53 and the bottom of the bottom cylinder 55 are in the same vertical plane, under the compression force of the spring 56, the bottom cylinder 55 will pass through the round hole, thus playing a role in limiting the perforated ring plate 53 and the closed cover 3 respectively. At the same time, this installation scheme is tighter and more stable than the snap connection.

[0045] A limiting block 57 is extrusion-fitted to the bottom of the bottom cylinder 55. The limiting block 57 is fixedly connected to the outer side of the outer shell 1. Elastic rings 58 are symmetrically connected to both sides of the bottom cylinder 55. A telescopic rod 59 is fixedly connected to the bottom of the elastic ring 58. The telescopic rod 59 is fixedly connected to the outer side of the outer shell 1. By manually pulling the elastic ring 58 outward by the operator, the telescopic rod 59 connected to its bottom will extend outward. At the same time, the bottom cylinders 55 fixedly connected to both ends of the elastic ring 58 will extend outward synchronously. Thus, when one of the elastic rings 58 is pulled outward, all the bottom cylinders 55 will extend outward synchronously and stop limiting the perforated ring plate 53.

[0046] Such as Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 and Figure 11As shown, the equalizing mechanism 7 includes a filter element support column 71. The outer side of the filter element support column 71 is fitted and matched with the inner wall of the filter element 6. The filter element support column 71 is arranged inside the outer shell 1. An adjusting component 72 is arranged between the filter element support column 71 and the filter element 6. An insertion rod 78 is sleeved on the surface of the filter element support column 71. One end of the filter element support column 71 away from the closing cover 3 is fixedly connected with a hollow ring plate 77. An internal slot 73 is opened on the surface of the filter element support column 71. A first fitting plate 74 is inserted into the internal slot 73. One end of the first fitting plate 74 away from the internal slot 73 is fixedly connected with an inner connecting rod 75. The inner connecting rod 75 penetrates through the surface of the filter element support column 71 and extends to the other side. One end of the inner connecting rod 75 away from the first fitting plate 74 is fixedly connected with a second fitting plate 76. The insertion rod 78 only replaces a number of subsequent first fitting plates 74 and second fitting plates 76 on the surface of the filter element support column 71. Thus, when compressed gas flows through, the first fitting plate 74 and the second fitting plate 76 will be retracted into the filter element support column 71 to conduct flow treatment on the gas. When the compressed gas does not need to flow, the first fitting plate 74 and the second fitting plate 76 will expand to facilitate the operator to clean the surface of the filter element support column 71 and the fitting plates. One end of the second fitting plate 76 away from the inner connecting rod 75 is fixedly connected with the insertion rod 78. The other end of the double-headed frame rod 43 is connected with the bending rod 44. Therefore, the bending rod 44 will move inward accordingly and squeeze the rod connecting ring 45. The other end of the rod connecting ring 45 is connected with the insertion rod 78. Therefore, the second fitting plate 76 fixedly connected to the other end of the insertion rod 78 will be retracted into the internal slot 73 opened on the filter element support column 71. In addition, the other end of the second fitting plate 76 is connected with the first fitting plate 74 through the inner connecting rod 75. Therefore, the first fitting plate 74 will enter its corresponding internal slot 73, causing a large number of holes to appear on the surface of the filter element support column 71. Then the compressed gas will enter the filter element support column 71 from the air inlet pipe 41, and then enter the filter element 6 from the holes shown on the surface of the filter element support column 71. At this time, the filter element 6 will filter the dust and impurities in the compressed gas, and the filtered compressed gas will be discharged outward from the air outlet hole opened at the bottom of the outer shell 1.

[0047] The adjusting component 72 includes a fixed ring rail 721 which is fixedly connected inside the outer housing 1. A notch is formed on the side of the fixed ring rail 721 away from the outer housing 1. A reset spring 722 is fixedly connected inside the notch. One end of the reset spring 722 away from the notch is fixedly connected with a indexing ball 723. A sliding connection bar 724 is slidably fitted on the side of the fixed ring rail 721 away from the outer housing 1. A notch is formed inside the fixed ring rail 721, and the inside of the notch is connected with the indexing ball 723 through the reset spring 722. The number of the sliding connection bars 724 is several, and both ends of each sliding connection bar 724 are curved surfaces. Therefore, whenever the sliding connection bar 724 rotates, its end face will squeeze the indexing ball 723, causing the indexing ball 723 to compress the reset spring 722 and retract into the notch. However, when the central part of the sliding connection bar 724 and the indexing ball 723 are in the same vertical plane, the indexing ball 723 will be fitted with the sliding connection bar 724 under the elastic force of the reset spring 722. Thus, when the filter element support column 71 rotates a certain angle, it will be subject to a rotational resistance, which is convenient for the operator to perform a full-range cleaning treatment on the filter element support column 71 in the same orientation. At the same time, it also reminds the operator of how many angles have been rotated and whether the cleaning is excessive. Meanwhile, the rotational resistance also plays a role in preventing the filter element support column 71 from rotating by itself during the cleaning process. The inner side of the sliding connection bar 724 is fitted with the indexing ball 723. Both ends of the sliding connection bar 724 are arc-shaped. One end of the sliding connection bar 724 away from the indexing ball 723 is fixedly connected with a socket ring 726. The inner side of the socket ring 726 is fixedly connected with the outer side of the filter element support column 71. One end of the sliding connection bar 724 away from the indexing ball 723 is press-fitted with a spline column 725. On the contrary, when the filter element 6 is pulled outwards, under the elastic force of the elastic bar 728, the spline column 725 will extend outwards and away from the sliding connection bar 724. The sliding connection bar 724 is slidably fitted inside the fixed ring rail 721. At the same time, the other side of the sliding connection bar 724 is connected with the filter element support column 71 through the socket ring 726. Therefore, the filter element support column 71 returns to the rotatable state. Thus, when the filter element 6 is pulled outwards, the rotation of the filter element support column 71 is convenient for the operator to perform a full-range dust cleaning on it. One end of the spline column 725 away from the sliding connection bar 724 is press-fitted with the inner end face of the filter element 6. The spline column 725 penetrates through the outside of the socket ring 726 and extends into its inside. An external connection plate 727 is fixedly connected to the outside of the spline column 725. One end of the external connection plate 727 close to the socket ring 726 is fixedly connected with an elastic bar 728. One end of the elastic bar 728 away from the external connection plate 727 is fixedly connected with the socket ring 726.As the closed cover 3 is fitted into the open end of the outer housing 1, the filter element 6 will be squeezed by the closed cover 3 and completely enter the interior of the outer housing 1. A spline column 725 is provided between the filter element 6 and the filter element support column 71. Therefore, during the process of the filter element 6 penetrating into the interior of the outer housing 1, the spline column 725 will be squeezed inward. At this time, the elastic strip 728 connected to the spline column 725 through the external connection plate 727 will be compressed. The elastic strip 728 plays a role in resetting the spline column 725. At the same time, the end of the spline column 725 away from the filter element 6 will squeeze and fix the sliding connection strip 724. The outer end face of the sliding connection strip 724 is connected to the filter element support column 71 through the socket ring 726. Therefore, it plays a role in limiting and fixing the filter element support column 71 to prevent it from shaking during operation.

[0048] As Figure 12 , Figure 13 and Figure 14 shown, the plugging mechanism 4 includes an air inlet pipe 41, which is fixedly connected to the end face of the outer housing 1. A plugging head 42 is extrusion-fitted in the inner cavity of the air inlet pipe 41. One end of the plugging head 42 away from the air inlet pipe 41 is fixedly connected to a double-headed frame rod 43. One end of the double-headed frame rod 43 away from the plugging head 42 is fixedly connected to a bent rod 44. An inner sliding strip 46 is slidingly fitted on the inner side of the end face of the outer housing 1. Double-headed bent rods 47 are symmetrically connected to both ends of the inner sliding strip 46. The central part of the inner sliding strip 46 is sleeved with an insertion rod 78. One side of the inner sliding strip 46 away from the outer housing 1 is fixedly connected to the outer side of the hollow ring plate 77. One end of the insertion rod 78 away from the filter element support column 71 is fixedly connected to a rod connection ring 45. One end of the rod connection ring 45 away from the insertion rod 78 is extrusion-fitted with the bent rod 44.

[0049] On the outer side of the double-headed support rod 43, a first connecting rod 48 is fixedly connected. One end of the first connecting rod 48 away from the double-headed support rod 43 is inserted with a central socket 49. One end of the central socket 49 away from the first connecting rod 48 is fixedly connected with a second connecting rod 40. One end of the second connecting rod 40 away from the central socket 49 is slidably fitted with an inner fixing rail 401. The inner fixing rail 401 is fixedly connected to the inner side of the air inlet pipe 41. Inside the inner fixing rail 401, a second magnetic block 403 is fixedly connected. One end of the second magnetic block 403 away from the inner fixing rail 401 is provided with a first magnetic block 402, and the first magnetic block 402 is fixedly connected with the second connecting rod 40. By connecting an external air pipe to the air inlet pipe 41 and filling compressed gas into the air inlet pipe 41, at this time, the compressed gas will first impact the plug 42. One end of the plug 42 is connected to the double-headed support rod 43, and the outer side of the double-headed support rod 43 is connected to the first connecting rod 48. In addition, the other end of the first connecting rod 48 is sleeved with the central socket 49, and the other end of the central socket 49 is slidably fitted inside the inner fixing rail 401 through the second connecting rod 40. Therefore, as the double-headed support rod 43 moves towards the outer housing 1, the first connecting rod 48 will extend out of the central socket 49, and at the same time, the second connecting rod 40 will move inward along the inner fixing rail 401 until it reaches the other end of the inner cavity of the inner fixing rail 401. The first magnetic block 402 fixedly connected to the outer side of the second connecting rod 40 and the second magnetic block 403 fixedly connected inside the inner fixing rail 401 are in a repulsive relationship and play a role in resetting the second connecting rod 40. Finally, the plug 42 will penetrate into the air inlet pipe 41 and the two will no longer fit together. At this time, the compressed gas will enter the air inlet pipe 41. The plug 42 plays a role in blocking the inside of the entire air filter box from the external equipment when there is no gas flow, preventing the hydraulic oil or lubricating oil inside the external equipment from leaking and flowing into the air filter box.

[0050] When the present invention is in use: First, insert the filter element 6 along the outer side of the filter element support column 71 into the inner part of the outer housing 1. Then, fit the closing cover 3 with the opening end face of the outer housing 1 in an embedded manner. Taking the end of the closing cover 3 away from the outer housing 1 as the viewing angle, rotate the closing cover 3 clockwise. At this time, the opening ring plate 53 fixedly connected to the inner end face of the closing cover 3 will rotate clockwise accordingly and squeeze the bottom of the bottom cylinder 55. The surface of the opening ring plate 53 is provided with round holes. In addition, as the opening ring plate 53 deflects clockwise, it will also be squeezed and fitted with the bottom notch 52 opened at the bottom of the bent plate 51. Then, the bottom cylinder 55 squeezed by the opening ring plate 53 will move upward through the top of the bent plate 51 and compress the spring 56 connected thereto until the round hole opened on the surface of the opening ring plate 53 and the bottom of the bottom cylinder 55 are on the same vertical plane. Under the compression force of the spring 56, the bottom cylinder 55 will pass through the round hole and realize the limiting treatment of the opening ring plate 53.

[0051] As the closing cover 3 is fitted into the opening end face of the outer housing 1, the filter element 6 will be squeezed by the closing cover 3 and completely enter the interior of the outer housing 1. A spline column 725 is provided between the filter element 6 and the filter element support column 71. Therefore, during the process of the filter element 6 penetrating into the interior of the outer housing 1, it will squeeze the spline column 725 inward. At this time, the elastic strip 728 connected to the spline column 725 through the external connection plate 727 will be compressed. At the same time, the end of the spline column 725 away from the filter element 6 will squeeze and fix the sliding connection strip 724 to achieve the limit fixing treatment of the filter element support column 71. On the contrary, when the filter element 6 is pulled outwards, under the elastic force of the elastic strip 728, the spline column 725 will extend outwards and away from the sliding connection strip 724. The sliding connection strip 724 is slidably fitted inside the fixed ring track 721. At the same time, the other side of the sliding connection strip 724 is connected to the filter element support column 71 through the socket ring 726. Therefore, the filter element support column 71 is rotatable.

[0052] By connecting an external air pipe to the air inlet pipe 41 and filling compressed gas into the air inlet pipe 41, at this time, the compressed gas will first impact the plugging head 42. The other end of the plugging head 42 is connected to the double-headed lever 43, and the outside of the double-headed lever 43 is connected to the first connecting rod 48. In addition, the other end of the first connecting rod 48 is sleeved with the central bushing 49, and the other end of the central bushing 49 is slidably fitted inside the inner fixing track 401 through the second connecting rod 40. Therefore, as the double-headed lever 43 moves towards the outer housing 1. The first connecting rod 48 will extend out of the central bushing 49, and at the same time, the second connecting rod 40 will move inward along the inner fixing track 401 until it reaches the other end of the inner cavity of the inner fixing track 401. Finally, the plugging head 42 will penetrate into the interior of the air inlet pipe 41 and the two will no longer be in contact. At this time, the compressed gas will enter the air inlet pipe 41. The other end of the double-headed lever 43 is connected to the bending rod 44. Therefore, the bending rod 44 will move inward accordingly and squeeze the rod connecting ring 45. The other end of the rod connecting ring 45 is connected to the inserting rod 78. Therefore, the second fitting plate 76 fixedly connected to the other end of the inserting rod 78 will be received into the internal slot 73 opened on the filter element support column 71. In addition, the other end of the second fitting plate 76 is connected to the first fitting plate 74 through the inner connecting rod 75. Therefore, the first fitting plate 74 will enter its corresponding internal slot 73, causing a large number of holes to appear on the surface of the filter element support column 71. Immediately afterwards, the compressed gas will enter the filter element support column 71 from the air inlet pipe 41, and then enter the filter element 6 from the holes on the surface of the filter element support column 71. At this time, the filter element 6 will filter the dust and impurities in the compressed gas, and the filtered compressed gas will be discharged outwards from the air outlet hole opened at the bottom of the outer housing 1.

[0053] The above embodiments are only preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. All kinds of changes made by those of ordinary skill in the art starting from the above conceptions without creative efforts fall within the scope of protection of the present invention.

Claims

1. An air filter box device for an air compressor, characterized in that: include: A blocking mechanism (4), which blocks the air inlet portion when there is no gas circulation; A locking mechanism (5), the locking mechanism (5) is used to seal the remaining parts of the device except for the air inlet and outlet; An even distribution mechanism (7), the even distribution mechanism (7) is used to evenly distribute the gas inside the device; An outer shell (1) is fixedly mounted on the outer end surface of the blocking mechanism (4); a connecting frame (2) is fixedly connected to the outer side of the outer shell (1); a closing cover (3) is arranged at one end of the outer shell (1) away from the blocking mechanism (4); the locking mechanism (5) is arranged on the outer side of the outer shell (1); a filter element (6) is arranged inside the outer shell (1); the equal distribution mechanism (7) is arranged inside the filter element (6); and an air outlet is provided at the bottom of the outer shell (1); The locking mechanism (5) comprises a bending plate (51), the bending plate (51) being fixedly connected to the outer side of the outer shell (1), a bottom notch (52) being provided at the portion where the bending plate (51) is connected to the outer shell (1), an open hole ring plate (53) being provided beside the bending plate (51), a circular hole being provided on the surface of the open hole ring plate (53), the open hole ring plate (53) being fixedly connected to the closing cover (3), a positioning plate (54) being provided at one end of the open hole ring plate (53) away from the bending plate (51), the positioning plate (54) being fixedly connected to the outer side of the outer shell (1).

2. The air filter box device of an air compressor according to claim 1, characterized in that: A bottom cylinder (55) is inserted into the top of the bending plate (51), a spring (56) is fixedly connected to the outer side of the bottom cylinder (55), one end of the spring (56) away from the bottom cylinder (55) is fixedly connected to the top of the bending plate (51), a limit block (57) is pressed and adapted at the bottom of the bottom cylinder (55), the limit block (57) is fixedly connected to the outer side of the outer shell (1), both sides of the bottom cylinder (55) are symmetrically connected to elastic rings (58), the bottom of the elastic ring (58) is fixedly connected to a telescopic rod (59), and the telescopic rod (59) is fixedly connected to the outer side of the outer shell (1).

3. The air filter box device of an air compressor according to claim 1, characterized in that: The equal distribution mechanism (7) comprises a filter element support column (71), the outer side of the filter element support column (71) is fitted with the inner wall of the filter element (6), the filter element support column (71) is arranged inside the outer shell (1), an adjustment component (72) is arranged between the filter element support column (71) and the filter element (6), a penetration rod (78) is sleeved on the surface of the filter element support column (71), and a hollow ring sheet (77) is fixedly connected to one end of the filter element support column (71) away from the closing cover (3).

4. The air filter box device of an air compressor according to claim 3, characterized in that: The surface of the filter element support column (71) is provided with an internal groove (73), a first interlocking plate (74) is inserted into the internal groove (73), an end of the first interlocking plate (74) away from the internal groove (73) is fixedly connected to an inner connecting rod (75), the inner connecting rod (75) is inserted into the surface of the filter element support column (71) and extends to the other side, an end of the inner connecting rod (75) away from the first interlocking plate (74) is fixedly connected to a second interlocking plate (76), and an end of the second interlocking plate (76) away from the inner connecting rod (75) is fixedly connected to an insertion rod (78).

5. The air filter box device of an air compressor according to claim 3, characterized in that: The adjustment assembly (72) comprises a fixed ring rail (721), the fixed ring rail (721) being fixedly connected to the interior of the outer shell (1), a hole being provided on a side of the fixed ring rail (721) away from the outer shell (1), wherein a return spring (722) is fixedly connected to the interior of the hole, and a dividing ball (723) is fixedly connected to the end of the return spring (722) away from the hole.

6. The air filter box device of an air compressor according to claim 5, characterized in that: The fixed ring rail (721) is slidably adapted to be provided with a sliding strip (724) on the side away from the outer shell (1), the inner side of the sliding strip (724) being engaged with the indexing ball (723), wherein both ends of the sliding strip (724) are arc-shaped, and the end of the sliding strip (724) away from the indexing ball (723) is fixedly connected to a sleeve ring (726), and the inner side of the sleeve ring (726) is fixedly connected to the outer side of the filter element support column (71).

7. The air filter box device of an air compressor according to claim 6, characterized in that: The end of the sliding strip (724) away from the indexing ball (723) is extruded and adapted with a spline column (725), and the end of the spline column (725) away from the sliding strip (724) is extruded and adapted with the inner end surface of the filter element (6). The spline column (725) is inserted into the outer side of the sleeve ring (726) and extends into the interior thereof. The outer side of the spline column (725) is fixedly connected with an external plate (727), and the end of the external plate (727) close to the sleeve ring (726) is fixedly connected with an elastic bar (728), and the end of the elastic bar (728) away from the external plate (727) is fixedly connected to the sleeve ring (726).

8. The air filter box device of an air compressor according to claim 1, characterized in that: The blocking mechanism (4) comprises an air intake pipe (41), the air intake pipe (41) being fixedly connected to the end surface of the outer shell (1), the inner cavity of the air intake pipe (41) being extruded and adapted to be equipped with a blocking head (42), one end of the blocking head (42) away from the air intake pipe (41) being fixedly connected to a double-headed frame rod (43), and one end of the double-headed frame rod (43) away from the blocking head (42) being fixedly connected to a bent rod (44).

9. The air filter box device of an air compressor according to claim 8, characterized in that: The inner side of the end surface of the outer shell (1) is slidably adapted with an inner slide bar (46), and both ends of the inner slide bar (46) are symmetrically connected with double-headed bent rods (47). The central part of the inner slide bar (46) is sleeved with the insertion rod (78). The side of the inner slide bar (46) away from the outer shell (1) is fixedly connected to the outer side of the hollow ring sheet (77). The end of the insertion rod (78) away from the filter element support column (71) is fixedly connected with a rod connection ring (45), and the end of the rod connection ring (45) away from the insertion rod (78) is extruded and adapted with the bent rod (44).

10. The air filter box device of an air compressor according to claim 8, characterized in that: A No. 1 connecting rod (48) is fixedly connected to the outer side of the double-headed frame rod (43); a center sleeve (49) is inserted into the end of the No. 1 connecting rod (48) away from the double-headed frame rod (43); a No. 2 connecting rod (40) is fixedly connected to the end of the center sleeve (49) away from the No. 1 connecting rod (48); an inner fixed rail (401) is slidably adapted to the end of the No. 2 connecting rod (40) away from the center sleeve (49); the inner fixed rail (401) is fixedly connected to the inner side of the intake pipe (41); a No. 2 magnetic block (403) is fixedly connected inside the inner fixed rail (401); a No. 1 magnetic block (402) is provided at the end of the No. 2 magnetic block (403) away from the inner fixed rail (401); and the No. 1 magnetic block (402) is fixedly connected to the No. 2 connecting rod (40).

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