Device for fixing air filter in air inlet filtering system

Abstract

The utility model provides a device for fixing an air filter in an air inlet filtering system, and particularly, the device comprises a first pressing assembly for applying primary pressing force to the air filter, and a second pressing assembly for applying secondary pressing force to the air filter, the second pressing assembly is used for applying secondary pressing force to the first pressing assembly; the second pressing assembly comprises a fixing pin seat used for fixing the second pressing assembly to the wall of an outer plate box body of the diesel engine air inlet filtering device. The pressing plate is used for being connected with the first pressing assembly; and the pressing degree adjusting assembly is used for adjusting the distance between the pressing plate and the fixed pin seat in the pressing direction so as to adjust the pressing force between the first pressing assembly and the air filter. According to the device, on the premise that the pressing effect is not affected, the structure is optimized, bolt fixing is omitted, and the pressing plate can be rapidly detached; meanwhile, the pressing device has a better pressing effect, secondary pressing is achieved, the pressing precision is higher, use is convenient and fast, and maintenance is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of train diesel engine intake air filtering devices, and particularly relates to a device for fixing an air filter in an intake air filtering system. Background Art

[0002] The existing diesel engine intake air filtering device provides clean air for each train device by filtering dust in the air, and an air filter for secondary filtering and dust removal of the received air after primary filtering is arranged inside.

[0003] In the prior art, when installing the air filter, a long bolt is used to pass through the axis of the air filter to fix the air filter on the vertical wall of the L-shaped plate of the inner plate box body. In this way, during use, the air filter may become detached due to the loosening of the bolt. Moreover, each disassembly requires replacing the bolt fastener, the disassembly process is cumbersome, wasting working hours, and will damage the integrity of the air filter. Summary of the Utility Model

[0004] In view of this, the utility model provides a device for fixing an air filter in an intake air filtering system. Specifically, the device includes:

[0005] A first pressing component for applying a primary pressing force to the air filter;

[0006] And a second pressing component for applying a secondary pressing force to the first pressing component;

[0007] The second pressing component includes a fixed pin seat for fixing the second pressing component on the outer plate box body wall of the diesel engine intake air filtering device, a pressing plate for connecting the first pressing component, and a pressing degree adjusting component for adjusting the distance between the pressing plate and the fixed pin seat in the pressing direction to thereby adjust the pressing force between the first pressing component and the air filter.

[0008] Based on the above solution,

[0009] The pressing degree adjusting component includes a pin shaft arranged on the fixed pin seat and a pressing block sleeved on the pin shaft and adjusting the distance between the pressing plate and the fixed pin seat in the pressing direction during the rotation around the pin shaft to thereby adjust the pressing force between the first pressing component and the air filter.

[0010] Based on the above solution,

[0011] The pressing block includes a socket part for sleeving the pressing block on the pin shaft, a cam part for adjusting the pressing force between the first pressing component and the air filter in the pressing direction during the rotation of the pressing block around the pin shaft, and a stop part for preventing the pressing block from rotating excessively; a stop block cooperating with the stop part is arranged on the fixed pin seat.

[0012] Based on the above solution, the surface of the cam portion that contacts the pressing plate at least during the pressing process is a cylindrical surface or a conical surface.

[0013] Based on the above solution, when the cam portion provides the maximum pressing force to the pressing plate, the inclination direction and inclination angle at the contact between the cam portion and the pressing plate are the same as those of the air filter.

[0014] Based on the above solution, the first pressing assembly includes a pressing structure for transmitting the pressing force provided by the second pressing assembly to the air filter and a connecting portion for receiving the pressing force provided by the pressing plate; an adjusting assembly for adjusting the distance between the two in the pressing direction is provided between the pressing structure and the connecting portion.

[0015] The adjusting assembly includes a screw rod and a nut group that is threadedly connected to the screw rod and is used to adjust the distance between the pressing structure and the connecting portion in the pressing direction.

[0016] Based on the above solution, a plurality of connecting rods are provided on the pressing plate, and a first pressing assembly is provided at each end of the connecting rod.

[0017] Based on the above solution, the connecting rod includes a first connecting rod that is axially movably connected to the pressing plate, and second connecting rods are respectively provided at both ends of the first connecting rod in a detachable connection manner; the first pressing assembly is provided on the second connecting rod.

[0018] Based on the above solution, the pressing structure is a sleeve-type structure, and in the use state, the pressing structure is sleeved on the end of the air filter.

[0019] The present application also provides a train diesel engine intake air filtration system, including a plurality of diesel engine intake air filtration devices; the diesel engine intake air filtration device includes an outer plate box body and an inner plate box body, and a plurality of air filters for performing secondary filtration and dust removal on the received air that has been primary filtered are arranged inside the inner plate box body, and also includes the above-mentioned device for fixing the air filter to the side wall of the inner plate box.

[0020] The device of the present utility model optimizes the structure without affecting the pressing effect, cancels the bolt fixation, and realizes the quick disassembly of the pressing plate. At the same time, the present utility model has a better pressing effect, secondary pressing, higher pressing precision, is convenient and fast to use, and is easy to maintain. Press the first pressing component against the end of the air filter. At the same time, fix the fixed pin seat on the outer plate box wall of the diesel engine intake filtering device, and adjust the distance between the pressing plate and the fixed pin seat in the pressing direction by adjusting the pressing degree adjusting component, so as to adjust the pressing force between the first pressing component and the air filter. The quick fixation and pressing of the air filter can be realized. The conical surface setting of the cam part in the device can not only ensure the pressing effect, but also eliminate the need for inclination during the installation of the whole device. The design of the sleeve-type structure of the pressing structure ensures that the air filter will not fall off even when the pressing force is insufficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the device in Embodiment 1 of the present utility model;

[0022] Figure 2 is a schematic structural diagram of the end part of the device in an embodiment of the present utility model;

[0023] Figure 3 is a schematic structural diagram of the end part of the device in an embodiment of the present utility model (showing the bottom);

[0024] Figure 4 is a schematic structural diagram of a pressing block in the device of the present utility model;

[0025] Figure 5 is a schematic structural diagram of another pressing block in the device of the present utility model;

[0026] Figure 6 is a schematic structural diagram of the pressing state of the pressing block and the pressing plate in the present utility model;

[0027] Figure 7 is Figure 4 a schematic structural diagram of the pressing process of the pressing block in ; wherein, the top figure is the state before pressing, the middle figure is the state during pressing, and the bottom figure is the state when locked;

[0028] Figure 8 is Figure 5 a schematic structural diagram of the pressing process of the pressing block in ; wherein, the top figure is the state before pressing, the middle figure is the state during pressing, and the bottom figure is the state when locked;

[0029] Figure 9 is Figure 4 a schematic diagram of the state of the pressing block during pressing in ;

[0030] Figure 10For Figure 5 Schematic diagram of the state when the middle pressing block presses;

[0031] Figure 11 Schematic diagram of the structure of the first pressing assembly in the device of the present utility model;

[0032] Figure 12 Schematic diagram of the holding structure in the first pressing assembly in the device of the present utility model being a sleeve cover structure;

[0033] Figure 13 Schematic diagram of the structure of the device in the embodiment of the present utility model. Specific implementation manner

[0034] The following further describes the present utility model in detail with reference to the drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present utility model and do not impose any limitations on it.

[0035] Embodiment 1

[0036] The present application provides a specific implementation manner of a device for fixing an air filter in a train diesel engine intake filtration system, as Figure 1 described, the device for fixing an air filter in a train diesel engine intake filtration system includes:

[0037] A first pressing assembly 1 for applying a primary pressing force to the air filter;

[0038] And a second pressing assembly 2 for applying a secondary pressing force to the first pressing assembly 1;

[0039] The second pressing assembly 2 includes a fixing pin seat 2-1 for fixing the second pressing assembly 2 on the outer plate box wall of the diesel engine intake filtration device, a pressing plate 2-2 for connecting the first pressing assembly 1, and a pressing degree adjusting assembly 2-3 for adjusting the distance between the pressing plate 2-2 and the fixing pin seat 2-1 in the pressing direction, thereby adjusting the pressing force between the first pressing assembly 1 and the air filter.

[0040] Refer to the patent applied by the applicant: Application No. 202322173063.4, Title: Diesel Engine Intake Filtration Device and Diesel Engine Intake Filtration Device in the System, in this patent Figure 4Each air intake filtering device in the diesel engine air intake filtering system shown contains a plurality of air filters, which are vertically installed on the vertical wall of the L-shaped plate of the inner plate box body. Since the vertical wall of the L-shaped plate is inclined, the air filters are also inclined. In the prior art, when installing the air filter, a long bolt is used to pass through the axis of the air filter to fix the air filter on the vertical wall of the L-shaped plate of the inner plate box body. In this way, during use, the air filter may become detached due to the loosening of the bolt. Moreover, each disassembly requires replacing the bolt fastener, the disassembly process is cumbersome, wasting working hours, and it will damage the integrity of the air filter.

[0041] Structures such as the air filter, outer plate box body, outer plate box body wall, inner plate box body, inner plate box body wall, and L-shaped plate in this application all refer to the patent: Application No. 202322173063.4, Title: Diesel Engine Air Intake Device and System.

[0042] The above-mentioned pressing direction refers to the direction of pressing the air filter against the vertical wall of the L-shaped plate of the inner plate box body, that is, the direction perpendicular to the vertical wall of the L-shaped plate.

[0043] During use, press the first pressing assembly 1 against the end of the air filter. At the same time, fix the fixed pin seat 2-1 on the outer plate box body wall of the diesel engine air intake filtering device, and adjust the distance between the pressing plate 2-2 and the fixed pin seat 2-1 in the pressing direction by adjusting the pressing degree adjusting assembly 2-3, thereby adjusting the pressing force between the first pressing assembly 1 and the air filter.

[0044] Figure 1 The device in [description] has two first pressing assemblies 1. Therefore, 2 air filters can be fixed simultaneously. The form of the pressing degree adjusting assembly 2-3 can be various. Its principle is to adjust the relative distance between the fixed pin seat 2-1 and the pressing plate 2-2 in the pressing direction. For example, the method of adjusting with bolts (similar to the adjusting method in this application) Figure 10 Although the method of adjusting with bolts can adjust the relative distance between the fixed pin seat 2-1 and the pressing plate 2-2, it is difficult to make the two pressing degree adjusting assemblies 2-3 provide the same pressing degree, and the adjustment process is cumbersome, unable to meet the requirement of quick installation. To solve this technical problem, this application provides a specific implementation method, as shown in Figure 2 and 3As shown, the compaction degree adjustment assembly 2-3 includes a pin shaft 2-31 disposed on the fixed pin seat 2-1 and a pressing block 2-32 sleeved on the pin shaft 2-31 and adjusting the distance between the pressing plate 2-2 and the fixed pin seat 2-1 in the pressing direction during the rotation around the pin shaft 2-31, thereby realizing the adjustment of the pressing force between the first pressing assembly 1 and the air filter. During the rotation of the pressing block 2-32, the pressing block 2-32 provides different pressing forces for the pressing plate 2-2. In this way, the air filter can be quickly pressed and fixed on the vertical wall of the L-shaped plate only by rotating the pressing block 2-32.

[0045] As a specific implementation manner of the pressing block 2-32, as Figure 4 shown, the pressing block 2-32 includes a socket portion 2-321 for sleeving the pressing block 2-32 on the pin shaft 2-31, a cam portion 2-322 for adjusting the pressing force between the first pressing assembly 1 and the air filter in the pressing direction during the rotation of the pressing block 2-32 around the pin shaft 2-31, and a stop portion 2-323 for preventing the pressing block 2-32 from rotating excessively; a stop block 2-11 cooperating with the stop portion 2-323 is disposed on the fixed pin seat 2-1. In order to facilitate the rotation of the pressing block 2-32, a handle 2-324 is disposed on the outer wall of the socket portion 2-321. During rotation, only need to hold the handle 2-324 to rotate the pressing block 2-32, and the relative distance between the fixed pin seat 2-1 and the pressing plate 2-2 can be adjusted by the cam portion 2-322, thereby realizing the pressing and fixing of the air filter.

[0046] As Figure 6As shown, during the rotation of the pressing block 2-32, the relative position of the center of the socket part 2-321 remains unchanged. Since the distances from the outer wall surface of the cam part 2-322 to the center of the socket part 2-321 are different, the cam part 2-322 can provide pressing forces of different magnitudes to the pressing plate 2-2. During the rotation, the pressing force provided by the position where the distance from the outer wall surface of the cam part 2-322 to the center of the socket part 2-321 is a1 is less than that at the position where the distance is a2. The position where the distance from the outer wall surface of the cam part 2-322 to the center of the socket part 2-321 is A has the maximum distance from the center of the socket part 2-321. Therefore, when rotating to this position, the provided pressing force is the largest. Although the pressing force provided at this position is the largest, it is difficult to maintain the stability between the cam part 2-322 and the pressing plate 2-2 at this position. Therefore, it is necessary to continue rotating until the cam part 2-322 rotates past the position of distance A, for example, to the position of distance B in the figure. At this time, since the pressing plate 2-2 is in a tensioned state, it will push the pressing block 2-32 to continue rotating, and the continuous rotation will reduce the pressing force. Therefore, in order to prevent its continuous rotation, in this application, a stop part 2-323 is provided on the pressing block 2-32, and a stop block 2-11 that cooperates with the stop part 2-323 is provided on the fixed pin seat 2-1. This cooperation structure can not only prevent the excessive rotation of the pressing block 2-32, but also appropriately reduce the pressure between the pressing block 2-32 and the pressing plate 2-2 after reaching the maximum pressing force, and lock the pressing block 2-32 at the same time (for example, at the position between A and B in the figure, because when the cam part 2-322 rotates to the position of B, the stop part 2-323 abuts against the stop block 2-11).

[0047] During the pressing process, the shape of the surface where the cam part 2-322 contacts the pressing plate 2-2 affects the smoothness and pressing effect of the pressing process. In order to achieve a good pressing effect, as Figure 4 shown, the surface of the cam part 2-322 that contacts the pressing plate 2-2 at least during the pressing process is a cylindrical surface.

[0048] The air filter is vertically installed on the vertical wall of the L-shaped plate inside the inner plate box. Since the vertical wall of the L-shaped plate is inclined, the air filter is also inclined. As Figure 7 and Figure 9 shown( Figure 7The arrow in the figure indicates the rotation direction during pressing. The top figure shows the state before pressing, the middle figure shows the state during pressing, and the bottom figure shows the state during locking). If the surface of the cam portion 2-322 that contacts the pressing plate 2-2 at least during pressing is a cylindrical surface, although a good pressing effect can be achieved, it is necessary to install the fixed pin seat 2-1 obliquely during installation, and the oblique direction and angle are the same as those of the air filter, which will obviously increase the assembly difficulty of the product. To solve this technical problem, the present application provides another specific implementation of the pressing block 2-32, as Figure 5 shown, the surface of the cam portion 2-322 that contacts the pressing plate 2-2 at least during pressing is a conical surface. Moreover, when the cam portion 2-322 provides the maximum pressing force to the pressing plate 2-2, the oblique direction and oblique angle at the contact between the cam portion 2-322 and the pressing plate 2-2 are the same as those of the air filter. The pressing process is as Figure 8 and Figure 10 shown, Figure 8 The arrow in the figure indicates the rotation direction during pressing. The top figure shows the state before pressing (at this time, the pressing plate 2-2 is not tilted), the middle figure shows the state during pressing (at this time, the pressing plate 2-2 is tilted, and the tilt angle is the same as the slope of the conical surface), and the bottom figure shows the state during locking. The conical surface setting of the cam portion 2-322 can not only ensure the pressing effect, but also eliminate the need for tilting during the installation of the entire device.

[0049] In the device of the present application, the first pressing assembly 1 is used to receive the pressure of the second pressing assembly 2 and press the air filter against the vertical wall of the L-shaped plate of the inner plate box body. As a specific implementation, as Figure 11 shown, the first pressing assembly 1 includes a pressing structure 1-1 for transmitting the pressing force provided by the second pressing assembly 2 to the air filter and a connecting portion 1-3 for receiving the pressing force provided by the pressing plate 2-2; an adjusting assembly 1-2 for adjusting the distance between the two in the pressing direction is provided between the pressing structure 1-1 and the connecting portion 1-3. As a specific implementation, the adjusting assembly 1-2 includes a screw 1-21 and a nut group 1-22 that is threadedly connected to the screw 1-21 and is used to adjust the distance between the pressing structure 1-1 and the connecting portion 1-3 in the pressing direction. The function of the nut group 1-22 is to perform fine adjustment according to the pressing situation, such as when the size of the used air filter is smaller or larger than the standard size. During use, Figure 11 the pressing structure 1-1 in the figure presses on the end plane of the air filter. This structure will become loose during severe vehicle movement or long-term use of the device, resulting in the air filter falling off. To solve this technical problem, as Figure 12As shown, the pressing structure 1-1 is a sleeve cover structure. In the use state, the pressing structure 1-1 is sleeved on the end of the air filter. With the design of the sleeve cover structure, even when the pressing force is insufficient, the air filter will not fall off.

[0050] Embodiment 2

[0051] Based on the device in Embodiment 1, the present application provides another specific implementation manner of a device for fixing an air filter in a train diesel engine intake filtration system.

[0052] Figure 1 The device in [description] can press two air filters. However, in a train diesel engine intake filtration system, there are multiple air filters in one filtration device. At this time, multiple Figure 1 devices in [description] are required. This also increases the installation cost and installation efficiency. To solve this technical problem, as Figure 13 shown, a plurality of connecting rods 3 are arranged on the pressing plate 2-2, and a first pressing component 1 is arranged at each end of the connecting rod 3. Figure 13 There are two connecting rods 3 and four first pressing components 1 in [description], so that four air filters can be pressed at one time.

[0053] As a specific implementation, the connecting rod 3 includes a first connecting rod 3-1 that is axially movably connected to the pressing plate 2-2, and second connecting rods 3-2 are respectively arranged at both ends of the first connecting rod 3-1 in a detachable connection manner; the first pressing component 1 is arranged on the second connecting rod 3-2. The detachable connection manner between the first connecting rod 3-1 and the second connecting rod 3-2 does not require the entire device to be disassembled when the air filter needs to be replaced or repaired. It only needs to detach the second connecting rod 3-2 from the first connecting rod 3-1.

[0054] Other structures in this embodiment directly use the corresponding structures in Embodiment 1 and will not be elaborated here.

[0055] Embodiment 3

[0056] Based on the devices for fixing an air filter in a train diesel engine intake filtration system in Embodiments 1 and 2, the present application provides a train diesel engine intake filtration system. Specifically, it includes a plurality of diesel engine intake filtration devices; each diesel engine intake filtration device includes an outer plate box body and an inner plate box body. A plurality of air filters for performing secondary filtration and dust removal on the received air after primary filtration are arranged inside the inner plate box body, and it further includes a device for fixing the air filter on the side wall of the inner plate box. The structure of the device is the same as that of the devices for fixing an air filter in a train diesel engine intake filtration system in Embodiments 1 and 2 and will not be elaborated here.

[0057] Except for the device used to fix the air filter to the side wall of the inner board box, the other structures in the above-mentioned train diesel engine intake air filtration system belong to the prior art. For details, please directly refer to the patent application No. 202322173063.4, titled: Diesel Engine Intake Air Filtration Device in Diesel Engine Intake Air Filtration Device and System, which will not be elaborated here.

[0058] The above are only the preferred embodiments of the present invention, and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A device for fixing an air filter in an air intake filtration system, characterized in that: include A first pressing assembly (1) for applying a primary pressing force to the air filter; and a second pressing assembly (2) for applying a secondary pressing force to the first pressing assembly (1); The second pressing assembly (2) comprises a fixing pin seat (2-1) for fixing the second pressing assembly (2) on the outer plate box wall of the diesel engine intake filter device, a pressing plate (2-2) for connecting the first pressing assembly (1), and a pressing degree adjustment assembly (2-3) for adjusting the distance between the pressing plate (2-2) and the fixing pin seat (2-1) in the pressing direction to thereby adjust the pressing force between the first pressing assembly (1) and the air filter; The first pressing assembly (1) comprises a pressing structure (1-1) for transmitting the pressing force provided by the second pressing assembly (2) to the air filter and a connecting portion (1-3) for receiving the pressing force provided by the pressing plate (2-2); an adjusting assembly (1-2) for adjusting the distance between the pressing structure (1-1) and the connecting portion (1-3) in the pressing direction is arranged between the pressing structure (1-1) and the connecting portion (1-3); The adjustment assembly (1-2) comprises a screw rod (1-21) and a nut group (1-22) arranged on the screw rod (1-21) in a threaded connection manner and used for adjusting the distance between the pressing structure (1-1) and the connecting part (1-3) in the pressing direction.

2. A device for fixing an air filter in an air intake filtration system according to claim 1, characterized in that: The compression adjustment component (2-3) comprises a pin shaft (2-31) arranged on a fixed pin seat (2-1) and a compression block (2-32) sleeved on the pin shaft (2-31) and adjusting the distance between the compression plate (2-2) and the fixed pin seat (2-1) in the compression direction during rotation around the pin shaft (2-31), thereby adjusting the compression force between the first compression component (1) and the air filter.

3. A device for fixing an air filter in an air intake filtration system according to claim 2, characterized in that: The clamping block (2-32) comprises a sleeve portion (2-321) for sleeve-mounting the clamping block (2-32) on the pin shaft (2-31), a cam portion (2-322) for adjusting the clamping force between the first clamping assembly (1) and the air filter in the clamping direction during the process of the clamping block (2-32) rotating around the pin shaft (2-31), and a stop portion (2-323) for preventing the clamping block (2-32) from excessively rotating; the fixed pin seat (2-1) is provided with a stop block (2-11) for use in conjunction with the stop portion (2-323).

4. A device for fixing an air filter in an air intake filtration system according to claim 3, characterized in that: The surface of the cam portion (2-322) that contacts the pressing plate (2-2) at least during the pressing process is a cylindrical surface or a conical surface.

5. A device for fixing an air filter in an air intake filtration system according to claim 4, characterized in that: When the cam portion (2-322) provides the maximum pressing force for the pressing plate (2-2), the inclination direction and inclination angle of the contact point between the cam portion (2-322) and the pressing plate (2-2) are consistent with those of the air filter.

6. The device for fixing an air filter in an air intake filtration system according to claim 1, characterized in that: A plurality of connecting rods (3) are arranged on the clamping plate (2-2), and a first clamping assembly (1) is respectively arranged at both ends of the connecting rod (3).

7. A device for fixing an air filter in an air intake filtration system according to claim 6, characterized in that: The connecting rod (3) comprises a first connecting rod (3-1) axially connected to the clamping plate (2-2), and second connecting rods (3-2) are respectively arranged at both ends of the first connecting rod (3-1) in a detachable manner; the first clamping assembly (1) is arranged on the second connecting rod (3-2).

8. The device for fixing an air filter in an air intake filter system according to claim 7, characterized in that: The pressing and holding structure (1-1) is a sleeve-type structure. When in use, the pressing and holding structure (1-1) is sleeved on the end of the air filter.

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