Anti-loss, anti-dust-blocking and anti-automatic-closing dust outlet cover structure of air prefilter
By setting claws and hinged structures between the air prefilter dust cover and the side wall of the dust chamber, combined with the rotation damping force, the problem of easy loss and automatic drop of the dust cover is solved, and the good sealing of the dust outlet is achieved is achieved. and the efficient prefiltration effect of air prefilter.
Patent Information
- Application Number
- CN202420116399.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The existing air prefilter dust cover is easily lost in the use environment of construction machinery and agricultural machinery and vehicles, and it is easy to fall automatically when cleaning dust, resulting in a lax seal and a decrease in the prefiltering effect.
A dust-out cover structure for anti-loss and anti-gray and automatic closing of air prefilter is designed. By setting claws and hinges between the dust-out cover and the side walls of the dust-out chamber, combined with the rotational damping force, the dust-out cover is prevented from being exposed. Automatically drop and ensure sealing.
Effectively prevent the loss and automatic drop of the dust cover, ensure the sealing of the dust outlet, improve the pre-filtration effect of the air pre-filter, and be suitable for the use environment of construction machinery and agricultural machinery and vehicles.
Smart Images
Figure CN222501913U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a dust outlet cover related structure of a dust outlet cavity of an air pre-filter for a motor vehicle. Background Art
[0002] Construction machinery and agricultural machinery vehicles often work in places with heavy air pollution, and the air filter has a heavy workload. If the pre-filter function is not added, the service life of the air filter will be greatly shortened, and the air filter needs to be frequently maintained or replaced, which increases the cost of use and is also very inconvenient. Therefore, air pre-filters have become a must-have device for such vehicles.
[0003] The air pre-filter has a dust outlet chamber, and the filtered dust is concentrated in the dust outlet chamber. The dust outlet chamber needs to be cleaned every once in a while to prevent the dust outlet chamber from being full and unable to accommodate the newly filtered dust. Therefore, a dust outlet is provided on the side wall of the dust outlet chamber. During normal operation, the air pre-filter is in a negative pressure state, and the dust outlet needs to be in a closed state to prevent the outside air from being sucked into the dust outlet chamber through the dust outlet, thereby forming a reverse airflow in the dust outlet chamber and bringing the dust into the downstream air filter. For this reason, a dust outlet cover is provided at the dust outlet in the prior art.
[0004] The dust outlet cover is usually in a state of closing the dust outlet. The dust outlet cover is opened only when dust needs to be cleaned, and the dust in the dust outlet cavity is cleaned out through the dust outlet.
[0005] The simplest dust cover is snapped or screwed onto the dust outlet. When cleaning the dust, it is directly removed from the dust chamber (the dust cover is separated from the wall of the dust chamber), and then put back after cleaning the dust. However, this structure of dust cover has the following disadvantages: the working scene of construction machinery or agricultural machinery vehicles is often very messy, with construction materials, construction equipment, sand and gravel, or scattered straw and crops everywhere. After the dust cover is removed, it is placed casually. After cleaning the dust in the dust chamber, the dust cover is often not found. If the dust cover cannot find the corresponding vehicle, it cannot be started and work normally, which brings great trouble.
[0006] For this purpose, the applicant has designed a dust cover structure that prevents loss. By designing a pull-out dust cover (coordinated with the pull-out of the dust chamber side wall), a connecting rope is set between the dust cover and the dust chamber side wall of the air pre-filter to prevent the dust cover from being lost. However, this has its disadvantages: after opening the dust cover, it is necessary to loosen the dust cover to clean the dust accumulated in the dust chamber. After loosening the hand, the dust cover falls and is suspended by the connecting rope below the dust outlet. When dust is discharged, dust falls on the dust cover (the dust cover blocks dust), and the entire surface of the dust cover is stained with dust. Not only is it easy to dirty your hands when reinstalling, but the dust outlet may not be sealed tightly due to dust particles blocking it. Once the seal is not tight, the filtering effect of the air pre-filter will be greatly reduced. In the use environment of construction machinery and agricultural machinery vehicles, it is also difficult to completely clean the dust cover.
[0007] To address the above issues, a snap-on structure is needed to press the dust cover tightly against the side wall of the dust chamber at the dust outlet. There is no snap-on space on the top of the dust cover, and it is impossible to design a strong snap-on structure on the side wall of the dust chamber above the dust cover. A strong snap-on structure (claw structure) can be set on the bottom wall of the dust chamber, but it only clamps the lower part of the dust cover, and there is no limiting structure on the top of the dust cover. As a result, the top of the dust cover will become loose due to vibration during the operation of the motor vehicle, resulting in poor sealing effect and a significant impact on the pre-filtration effect of the air pre-filter.
[0008] During the design process, the applicant first designed a dust cover structure that rotates upward to open. The advantage is that it does not block dust when dust is discharged, and when closed, there are claws at the bottom and hinged structures at the top, so that the entire dust cover can well close the dust outlet when the motor vehicle is running. However, this has a new problem, that is, after the dust cover is opened upward, the dust cover (the cover body) will automatically fall down as soon as you let go, blocking the dust outlet again, hindering manual dust cleaning.
[0009] The above is the design process of the utility model. New problems are discovered while solving them, and problems are constantly solved, and finally the structure of the utility model that can solve all the above problems is obtained. Utility Model Content
[0010] The utility model aims to provide an air pre-filter dust cover structure which is anti-lost, anti-dust blocking and anti-automatic closing.
[0011] To achieve the above-mentioned purpose, the utility model provides an air pre-filter dust cover structure that prevents loss, dust blocking and automatic closing, and includes a cover body for closing the dust outlet on the air pre-filter dust outlet chamber, and a claw for pressing the cover body against the outer wall of the dust outlet chamber is provided on the bottom wall of the dust outlet chamber;
[0012] A hinged seat is provided on the outer wall of the dust outlet chamber above the dust outlet, and a hinged sleeve is provided on the top of the cover body, which extends into the hinged seat, and a bolt is passed between the hinged sleeve and the hinged seat, the head of the bolt is crimped with the left end or the right end of the hinged seat, and a nut is threadedly connected to the other end of the bolt, and the nut is crimped with the right end or the left end of the hinged seat; the tightening pressure between the nut and the hinged seat forms a rotational damping force between the nut and the hinged seat and between the head of the bolt and the hinged seat, and the rotational damping force is used to prevent the cover body from automatically rotating and falling under the action of gravity after it is opened.
[0013] The hinge seat, the hinge sleeve, the bolt and the nut form a set of hinge structures, and two sets of the hinge structures are arranged at intervals on the left and right sides of the top of the cover body.
[0014] The clamping claws are provided with two sets on the bottom wall of the dust outlet chamber at intervals on the left and right sides.
[0015] A sealing ring is arranged on the inner surface of the cover body outside the dust outlet along the dust outlet.
[0016] The inner wall of the cover is provided with grid-shaped reinforcing ribs.
[0017] The utility model has the following advantages:
[0018] The cover of the utility model is hinged on the outer wall of the dust outlet chamber, and there is no problem of losing the cover (anti-loss). The utility model is an upper flip cover structure. When the dust outlet chamber discharges dust, the dust falls downward, and the cover will not block the dust from falling (anti-dust blocking), and the dust will not contaminate the entire surface of the cover. The utility model can conveniently form a rotation damping force by properly tightening the nut to prevent the cover from automatically falling under the action of gravity after it is opened upward (anti-automatic closing), which solves the various problems described in the background technology and is very suitable for use as an air pre-filter for engineering machinery and agricultural machinery vehicles.
[0019] The two sets of hinged structures have a better limiting effect on the top of the cover body, which is more conducive to the sealing of the top of the cover body and the side wall of the dust outlet chamber above the dust outlet after the dust outlet cover is closed, and the structural strength of the entire hinged structure is higher.
[0020] The two sets of claw structures can apply more uniform tightening pressure to the bottom of the cover body, thereby improving the uniformity and reliability of the seal between the cover body and the side wall of the dust outlet chamber.
[0021] The sealing ring can improve the sealing reliability. The grid-shaped reinforcement ribs can enhance the structural strength of the cover, making it less likely for the cover to deform due to factors such as temperature, and preventing the cover from deforming and causing poor sealing (dust outlet). BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a structural schematic diagram of an air pre-filter using the utility model;
[0023] Figure 2 yes Figure 1 CC section view;
[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the cover. Figure 3 The perspective is in front;
[0025] Figure 4 This is a schematic diagram of the three-dimensional structure of the lower cover from another angle. Figure 4 The perspective is behind;
[0026] Figure 5 yes Figure 1 Enlarged view of point A in the middle. DETAILED DESCRIPTION
[0027] like Figures 1 to 5As shown, the anti-loss, anti-dust, and anti-automatic closing air pre-filter dust cover structure of the utility model comprises a cover body 1 for closing a dust outlet 3 on a dust outlet chamber 4 of the air pre-filter, and a claw 2 for pressing the cover body 1 against the outer wall of the dust outlet chamber 4 is provided on the bottom wall of the dust outlet chamber 4; Figure 2 As shown, two sets of dust outlets 3 and cover bodies 1 are symmetrically provided on the air pre-filter.
[0028] An articulated seat 5 is provided on the outer wall of the dust outlet chamber 4 above the dust outlet port 3, and an articulated sleeve 6 is provided on the top of the cover body 1, which extends into the articulated seat 5, and a bolt 7 is passed between the articulated sleeve 6 and the articulated seat 5, and the head of the bolt 7 is crimped with the left end or the right end of the articulated seat 5, and the other end of the bolt 7 is threadedly connected with a nut 8, and the nut 8 is crimped with the right end or the left end of the articulated seat 5; the tightening pressure between the nut 8 and the articulated seat 5 forms a rotational damping force between the nut 8 and the articulated seat 5 and between the head of the bolt 7 and the articulated seat 5, and the rotational damping force is used to prevent the cover body 1 from automatically rotating and falling under the action of gravity after it is opened.
[0029] The dust cover of the utility model is hinged on the outer wall of the dust outlet chamber 4, and there is no problem of losing the cover body 1 (anti-loss). The utility model is an upper flip cover structure. When the dust outlet chamber 4 discharges dust, the dust falls downward, and the cover body 1 will not block the dust from falling (anti-dust blocking), and the dust will not contaminate the entire surface of the cover body 1. The utility model can conveniently form a rotation damping force by properly tightening the nut 8 to prevent the cover body 1 from automatically falling under the action of gravity after being opened upward (anti-automatic closing), which solves the various problems described in the background technology and is very suitable for use as an air pre-filter for engineering machinery and agricultural machinery vehicles.
[0030] Since the cover body 1 itself is small in size and light in weight, the damping force required for preventing automatic falling and closing is very small, and the nut 8 does not need to be overtightened.
[0031] The hinge seat 5 , the hinge sleeve 6 , the bolt 7 and the nut 8 form a set of hinge structures, and two sets of hinge structures are provided at intervals on the left and right sides of the top of the cover body 1 .
[0032] The two sets of hinge structures have a better limiting effect on the top of the cover body 1, which is more conducive to the sealing of the top of the cover body 1 and the side wall of the dust outlet chamber 4 above the dust outlet 3 after the cover body 1 is closed, and the structural strength of the entire hinge structure is higher.
[0033] The claws 2 are provided with two sets at intervals on the bottom wall of the dust outlet chamber 4. The two sets of claws 2 can apply more uniform tightening pressure to the bottom of the cover body 1, thereby improving the uniformity and reliability of the sealing between the cover body 1 and the side wall of the dust outlet chamber 4.
[0034] The inner surface of the cover body 1 outside the dust outlet 3 is provided with a sealing ring along the dust outlet 3. The sealing ring can improve the sealing reliability. The sealing ring is a conventional part and is not shown in the figure.
[0035] The inner wall of the cover 1 is provided with grid-shaped reinforcing ribs 9. The grid-shaped reinforcing ribs 9 can enhance the structural strength of the cover 1, making it less likely for the cover 1 to deform structurally under the influence of factors such as temperature, thereby preventing the cover 1 from deforming structurally and causing poor sealing (dust outlet 3).
[0036] When in use, the utility model is installed on the air pre-filter of engineering machinery or agricultural machinery vehicles. When the engineering machinery or agricultural machinery vehicles are operating normally, the two claws 2 clamp the lower end of the cover body 1, and the cover body 1 and the side wall of the dust outlet cavity 4 outside the dust outlet 3 form a good crimping seal through the sealing ring, thereby avoiding a decrease in the pre-filtration effect of the air pre-filter due to poor sealing.
[0037] When the dust accumulation in the dust discharge chamber 4 needs to be cleaned, the vehicle is stopped, and the staff manually releases the claws 2 to flip up the cover 1. Under the action of the rotation damping force, the cover 1 will not automatically fall after the staff lets go.
[0038] After the staff has finished manual dust cleaning, they rotate the cover 1 downward to close the dust outlet 3, and use the claws 2 to fasten the lower end of the cover 1, thus completing the dust cleaning work. During the overall dust cleaning process, the dust outlet cover will not be lost, nor will it block the route of dust falling, nor will it automatically rotate and fall, which is very suitable for use as an air pre-filter for construction machinery or agricultural machinery vehicles.
[0039] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.
Claims
1. An air pre-filter dust cover structure that prevents loss, dust blocking, and automatic closing, comprises a cover body for closing the dust outlet on the air pre-filter dust outlet chamber, and a claw for pressing the cover body tightly against the outer wall of the dust outlet chamber is provided on the bottom wall of the dust outlet chamber; Features: A hinged seat is provided on the outer wall of the dust outlet chamber above the dust outlet, and a hinged sleeve is provided on the top of the cover body, which extends into the hinged seat, and a bolt is passed between the hinged sleeve and the hinged seat, the head of the bolt is crimped with the left end or the right end of the hinged seat, and a nut is threadedly connected to the other end of the bolt, and the nut is crimped with the right end or the left end of the hinged seat; the tightening pressure between the nut and the hinged seat forms a rotational damping force between the nut and the hinged seat and between the head of the bolt and the hinged seat, and the rotational damping force is used to prevent the cover body from automatically rotating and falling under the action of gravity after it is opened.
2. The anti-loss, anti-dust, and anti-automatic closing air pre-filter dust cover structure according to claim 1 is characterized in that: The hinge seat, the hinge sleeve, the bolt and the nut form a set of hinge structures, and two sets of the hinge structures are arranged at intervals on the left and right sides of the top of the cover body.
3. The anti-loss, anti-dust, and anti-automatic closing air pre-filter dust cover structure according to claim 1, characterized in that: The clamping claws are provided with two sets on the bottom wall of the dust outlet chamber at intervals on the left and right sides.
4. The air pre-filter dust cover structure with the function of preventing loss, blocking dust and automatically closing according to any one of claims 1 to 3, characterized in that: A sealing ring is arranged on the inner surface of the cover body outside the dust outlet along the dust outlet.
5. The anti-loss, anti-dust, and anti-automatic closing air pre-filter dust cover structure according to claim 4 is characterized in that: The inner wall of the cover is provided with grid-shaped reinforcing ribs.