Filtering assembly and gas storage tank applying same

Abstract

The utility model relates to a filter assembly and a gas storage tank using the filter assembly, which comprise a bracket main body and a filter piece arranged on the bracket main body, and are characterized by further comprising a connecting piece for fastening and connecting the bracket main body in an inserting and matching manner, the support main body is detachably connected to the gas storage tank by virtue of the connecting piece, and compared with the prior art, the gas storage tank has the advantages that the filter assembly is directly detachably connected with the gas storage tank by virtue of a connecting mode of inserting and connecting the filter assembly with the support main body; the problem that a common filtering assembly is arranged in the air storage tank and is difficult to detach or the detaching steps are tedious is solved, the whole filtering assembly can provide the function of filtering impurities in an air loop for a user, and the impurities are blocked in the filtering assembly of the air storage tank; the problem that impurities in the air passing through the inner cavity of the air storage tank affect the performance of an automobile brake and an air suspension system is effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air suspension systems, in particular to a filter component and an air storage tank with the filter component. Background Art

[0002] The air tank is an important component of the automobile air suspension system. The air supply source, such as an air pump, stores compressed air in the air tank, and then sends the compressed air to the shock absorber in the external pneumatic control system. If the air pressure in the shock absorber decreases, the compressed air in the air tank can be used to compensate for the air pressure. Therefore, components that control the flow of compressed air, such as air valves, need to be installed in the air tank.

[0003] During the operation of the vehicle, the compressed air stored in the inner cavity of the air tank will be contaminated with impurities when passing through the entire braking system (that is, the braking operation is performed by the compressed air according to the degree to which the driver presses the brake pedal). If the impurities enter and exit the air tank through the air valve, it will cause the following problems: compressed air with impurities enters the air circuit of the air suspension system, which will have an adverse effect on the safety of the entire vehicle or the reliability of the chassis air suspension system. To this end, a Chinese utility model patent with patent number ZL202120733732.7 (authorization announcement number CN214775840U) entitled "A vehicle air cylinder with a filtering structure" discloses a cylinder with a filtering mechanism embedded inside the air duct, so that dust can be filtered by the filtering mechanism in the air duct, thereby ensuring that the exhausted gas is in a clean state, wherein the filtering mechanism includes a support frame, a fixed rod rotated to the inside of the support frame, and a filter plate detachably connected to the outer wall of the fixed rod. After the air cylinder has been used for a period of time, it is necessary to unscrew the air outlet head and clean the inside of it. The replacement operation is: first, twist the fixed rod to make the fixed rod leave the support frame and then take out the entire filtering mechanism; second, clean the inside of the air duct; third, finally unscrew the locking ring to replace the filter plate. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a filter assembly which can prevent compressed air with impurities from entering the air circuit and is easy to replace in view of the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a gas storage tank using the above-mentioned filter assembly in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: the filter assembly is used to filter the compressed air in the air storage tank, and includes a bracket main body and a filter element arranged on the bracket main body, and is characterized in that it also includes a connecting piece for the bracket main body to be fastened and connected by plug-in, and the bracket main body can be detachably connected to the air storage tank with the help of the connecting piece.

[0007] In order to improve the filtering efficiency of the filter element, preferably, the bracket body includes a second connecting portion for connecting the filter element, and the side wall of the second connecting portion is provided with at least two first connecting ports that are in fluid communication with the compressed air in the air storage tank at intervals along the circumferential direction, and each first connecting port is covered with the filter element. Wherein, while a plurality of first connecting ports are provided, a filter element is also provided thereon, so that the filtering area of ​​the filter element can be increased to better filter the compressed air in the air storage tank, and the connection between the filter element and the second connecting portion can be achieved by covering the surface of the first connecting ports.

[0008] Furthermore, the bracket body also includes a first connection part connected to the second connection part, the outer diameter of the connection piece is reduced to form a small diameter end, and the first connection part is sleeved on the small diameter end by plugging. This design connects the connection piece to the first connection part by forming a small diameter end, which can ensure that the overall tube diameter of the bracket body is larger, and can maximize the filtration area of ​​the filter element.

[0009] In order to achieve the mating of the small diameter end of the connector and the first connecting part, preferably, the small diameter end of the connector has an annular outer step, and the first connecting part is provided with an annular inner step that matches and engages with the annular outer step. Since the contact surface of the annular outer step and the annular inner step is annular, the tightness of the two during mating is maximized.

[0010] Furthermore, the side wall of the first connection portion is provided with at least two slots spaced apart in the circumferential direction, and the spacing between the adjacent slots constitutes an elastic clamping foot, and each elastic clamping foot always has the tendency to clamp onto the annular outer step. Due to the arrangement of the slots, the elastic clamping foot has a "one thing for two purposes" function, and can achieve effective positioning while having a certain degree of deformation to achieve better insertion, and after insertion, due to its own elastic deformation, it can also achieve a clamping fit with the annular outer step.

[0011] Furthermore, the support body is cylindrical, and has a second connecting port at the bottom that is connected to the compressed air fluid in the air tank, and the second connecting port is also covered with the filter. When the compressed air enters and exits the air tank, it can be directly filtered in multiple stages from outside to inside or from inside to outside along the axial direction through the connecting member and the second connecting port of the support body, and finally the impurities can be better filtered, and the filtering performance is effectively improved.

[0012] To solve the second technical problem, the utility model also provides an air storage tank, comprising a tank body, the tank body having a cavity for storing compressed air and a filter assembly arranged in the cavity, characterized in that: the filter assembly adopts the filter assembly as described above, and correspondingly, the tank body is provided with a connecting seat to which the connecting member can be connected, and the first end of the connecting member exposed from the connecting seat is provided with an air inlet connector for controlling the inflow and outflow of compressed air, and when the air inlet connector is removed from the first end of the connecting seat, the filter assembly can be directly removed from the connecting seat for replacement with the old one.

[0013] In order to facilitate the replacement of the filter assembly with a new one, from the perspective of simple structure, preferably, the connector also includes a second end portion embedded in the connector seat, and the second end portion is detachably connected to the connector seat. The replacement of the filter assembly with a new one is finally achieved through the detachable connection between the second end portion of the connector and the connector seat.

[0014] In order to achieve a sealed connection between the second end of the connector and the connecting seat, the second end of the connector is further at least partially retracted radially inward to form an inwardly retracted section, and a sealing ring is sleeved on the inwardly retracted section to achieve a sealed connection between the second end and the connecting seat.

[0015] Compared with the prior art, the advantages of the utility model are: 1. The filter component is directly connected to the gas tank in a detachable manner by means of a plug-in connection with the bracket body, which solves the problem that the general filter component is difficult to disassemble or the disassembly steps are complicated when it is set in the gas tank; 2. The filter element can be an activated carbon sponge or a high-efficiency air particulate filter, and the setting of the bracket body can better support or set the filter element thereon, so that the overall filter assembly can provide users with the function of filtering impurities in the air circuit such as the gas tank. The impurities are blocked in the filter assembly of the gas tank, which effectively solves the problem that impurities in the air passing through the inner cavity of the gas tank affect the performance of the automobile braking and air suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of the filter assembly and the connector in a connected state in an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Exploded diagram of the decomposition;

[0018] Figure 3 This is a schematic diagram of the structure in which the filter assembly is arranged on the tank body in the embodiment of the utility model;

[0019] Figure 4 for Figure 3A cross-sectional view of the filter assembly (showing that the filter assembly is connected to the tank body via a connecting seat);

[0020] Figure 5 This is a structural diagram of the relationship between the filter assembly, the connector, the air inlet connector and the connector seat in the embodiment of the utility model;

[0021] Figure 6 for Figure 5 Schematic diagram of the decomposition structure;

[0022] Figure 7 for Figure 5 sectional view of . DETAILED DESCRIPTION

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 7 The filter assembly can be used in any air storage cylinder of a car. This embodiment is described by taking the air storage tank of the vehicle air suspension as an example. The air storage tank of the vehicle air suspension is mainly used to store compressed air for pneumatic shock absorbers of the air suspension system. The air suspension is connected to the air storage tank described later via the supply and exhaust pipelines and various branch pipelines.

[0025] The gas storage tank of this embodiment includes a tank body 4, which has a cavity 41 for storing compressed air and a filter assembly arranged in the cavity 41. The filter assembly adopts the filter assembly described below. Correspondingly, a connection seat 5 is provided on the tank body 4 to which the connection member 3 can be connected. The first end 33 of the connection member 3 exposed on the connection seat 5 is provided with an air inlet connector 6 for controlling the inflow and outflow of compressed air. When the air inlet connector 6 is removed from the first end 33 of the connection seat 5, the filter assembly can be directly removed from the connection seat 5 for replacement with a new one. Figure 1 As shown, the filter assembly of this embodiment is used to filter the compressed air in the air tank, and includes a bracket main body 1 and a filter element 2 arranged on the bracket main body 1, and also includes a connector 3 for fastening the bracket main body 1 by plugging. As mentioned above, the bracket main body 1 can be detachably connected to the air tank with the help of the connector 3.

[0026] Specifically, in order to improve the filtering efficiency of the filter element 2, the bracket body 1 is cylindrical and includes a second connecting portion 11 for connecting the filter element 2. The side wall of the second connecting portion 11 is provided with at least two first connecting ports 12 connected to the compressed air fluid in the gas tank at intervals along the circumferential direction. The number of the first connecting ports 12 in this embodiment is set to four. At the same time, a second connecting port 10 connected to the compressed air fluid in the gas tank is provided at the bottom. The second connecting port 10 is also covered with the filter element 2, and each first connecting port 12 is covered with the filter element 2. When the compressed air enters and exits the gas tank, it can be directly filtered from the outside to the inside or from the inside to the outside in multiple stages along the axial and radial directions through the connecting member 3 and the first connecting port 12 and the second connecting port 10 of the bracket body 1, so that impurities can be better filtered and the filtering performance is effectively improved. The filter element 2 in this embodiment is selected as an activated carbon sponge, and a wire mesh can be coated on its outer surface. The wire mesh can enhance its strength, and a layer of the filter element 2 can be provided inside and outside the first connecting port 12, or multiple layers can be provided.

[0027] The key point is how the bracket body 1 is fastened to the connector 3 by plugging, and how the filtering area of ​​the filter element 2 can be maximized. The following is an example of the clamping method:

[0028] refer to Figure 2 and 6 The bracket body 1 also includes a first connecting portion 13 connected to the second connecting portion 11. The outer diameter of the connecting member 3 is reduced to form a small-diameter end 31, and the first connecting portion 13 is sleeved on the small-diameter end 31 by plugging. The design connects the connecting piece 3 to the first connecting portion 13 by forming a small-diameter end 31, so that the overall tube diameter of the bracket body 1 is large, so as to increase the filtering area of ​​the filter element 2, and an annular outer step 32 is provided on the small-diameter end 31 of the connecting piece 3. Correspondingly, an annular inner step 14 is provided on the first connecting portion 13 to be engaged with the annular outer step 32. Since the contact surface between the annular outer step 32 and the annular inner step 14 is annular, the tightness of the two during mating is maximized. In order to better perform the mating of the two, at least two grooves 15 are provided on the side wall of the first connecting portion 13 at intervals along the circumferential direction, and the spacing between adjacent grooves 15 constitutes an elastic foot 16. Each elastic foot 16 always has a tendency to be clamped on the annular outer step 32. Due to the arrangement of the groove 15, the elastic foot 16 has the function of "one thing for two purposes". While achieving effective positioning, it can also have a certain degree of deformation to achieve better insertion. After insertion, it can also achieve a clamping fit with the annular outer step 32 due to its own elastic deformation.

[0029] Finally, reference Figure 4In addition to the first end 33 connected to the air inlet connector 6, the connecting member 3 also includes a second end 34 embedded in the connecting seat 5. The second end 34 and the connecting seat 5 can be detachably connected by threaded connection. As long as the connecting member 3 is removed from the connecting seat 5, the old filter assembly can be directly replaced with a new one. The second end 34 of the connecting member 3 is at least partially radially contracted inward to form a contracted section 35, and a sealing ring 7 is sleeved on the contracted section 35, so that the second end 34 and the connecting seat 5 are sealed when connected.

[0030] In summary, the filter assembly itself can be disassembled and connected, and the replacement method of the filter assembly connected to, for example, a gas tank is mainly based on the plug-in method with the connector 3;

[0031] First, the first connecting portion 13 of the support body 1 of the filter assembly is inserted into the small diameter end 31 of the connecting member 3. During the insertion, each elastic foot 16 is opened until the annular inner step 14 is clamped on the annular outer step 32, and the elastic foot 16 is clamped with the annular outer step 32 due to its own elastic deformation;

[0032] Second, the bracket body 1 with the filter 2 is inserted into the connection seat 5 of the gas storage tank together with the connection member 3, and the second end of the connection member 3 is connected to the thread of the connection member 3, while the first end of the connection member 3 is exposed outside the connection seat 5 and is threadedly connected to the air inlet joint 6, so that the filter 2 is used to better filter the compressed air in and out of the tank body 4 when the external compressed air enters and exits the gas storage tank;

[0033] Third, when the filter assembly needs to be replaced, it is only necessary to remove the air inlet connector 6 and then rotate the connector 3 away from the connector seat 5. Only one operation step is required to remove the entire filter assembly from the gas tank and replace the old one with a new one.

Claims

1. A filter assembly for filtering compressed air in a gas storage tank, comprising a support body (1) and a filter element (2) arranged on the support body (1), characterized in that: It also includes a connecting piece (3) for fastening the support body (1) by plugging and fitting, and the support body (1) can be detachably connected to the gas storage tank by means of the connecting piece (3).

2. The filter assembly according to claim 1, characterized in that: The support body (1) comprises a second connection portion (11) for connecting the filter element (2), and the side wall of the second connection portion (11) is provided with at least two first communication ports (12) spaced apart along the circumferential direction for communicating with the compressed air fluid in the air storage tank, and each first communication port (12) is covered with the filter element (2).

3. The filter assembly according to claim 1 or 2, characterized in that: The bracket body (1) further comprises a first connecting portion (13) connected to the second connecting portion (11); the connecting member (3) is reduced in outer diameter to form a small-diameter end (31); and the first connecting portion (13) is sleeved on the small-diameter end (31) by plugging.

4. The filter assembly according to claim 3, characterized in that: The small diameter end (31) of the connecting piece (3) has an annular outer step (32), and the first connecting portion (13) is provided with an annular inner step (14) which cooperates and engages with the annular outer step (32).

5. The filter assembly according to claim 4, characterized in that: The side wall of the first connecting portion (13) is provided with at least two slots (15) spaced apart along the circumferential direction, and the spacing between adjacent slots (15) constitutes an elastic clamping foot (16), and each elastic clamping foot (16) always has the tendency to be clamped on the annular outer step (32).

6. The filter assembly according to claim 5, characterized in that: The support body (1) is cylindrical and has a second communication port (10) at the bottom thereof which is in communication with the compressed air fluid in the air storage tank. The second communication port (10) is also covered with the filter element (2).

7. A gas storage tank, comprising a tank body (4), the tank body (4) having a cavity (41) for storing compressed air and a filter assembly arranged in the cavity (41), characterized in that: The filter assembly adopts the filter assembly as claimed in any one of claims 1 to 6, and correspondingly, a connecting seat (5) is provided on the tank body (4) to which the connecting member (3) can be connected, and an air inlet connector (6) for controlling the inflow and outflow of compressed air is provided on the first end (33) of the connecting member (3) exposed from the connecting seat (5). When the air inlet connector (6) is removed from the first end (33) of the connecting seat (5), the filter assembly can be directly removed from the connecting seat (5) for replacement with the old one.

8. The gas storage tank according to claim 7, characterized in that: The connecting member (3) further comprises a second end portion (34) embedded in the connecting seat (5), and the second end portion (34) is detachably connected to the connecting seat (5).

9. The gas storage tank according to claim 8, characterized in that: The second end portion (34) of the connecting member (3) is at least partially radially inwardly contracted to form an inwardly contracted section (35), and a sealing ring (7) is sleeved on the inwardly contracted section (35) to seal the second end portion (34) to the connecting seat (5).

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