Harvester with tail gas treatment device

Abstract

The utility model relates to the technical field of harvesters, in particular to a harvester with a tail gas treatment device, which comprises a first cavity, a second cavity, a fastening hoop, a connecting leg and an auxiliary positioning connecting unit. Movable limiting units are arranged on the inner walls of the first cavity and the second cavity; according to the harvester with the tail gas treatment device, the auxiliary positioning connecting unit and the movable limiting unit are arranged at the tail gas treatment device, so that a filter element is replaced and cleaned more conveniently and quickly, and the situations that the filter element of the tail gas treatment device is blocked and fails are reduced; tail gas discharged by the harvester is always in a standard state, and the actual practical requirement is met.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to a harvester with an exhaust gas treatment device. Background Art

[0002] Nowadays, most harvester engines are gasoline and diesel engines. Diesel engines are widely used in large harvesters. They have the characteristics of strong power, good fuel economy and strong durability, but they also have the disadvantage of large exhaust emissions. With the increasingly stringent environmental protection regulations, the emission performance of harvester engines has also received more and more attention, and the emission performance of diesel engines has also been continuously improved to meet environmental protection requirements.

[0003] Existing Chinese patent publication number CN211116195U discloses a diesel engine exhaust treatment device comprising a housing, one end of which serves as an air inlet, and the other as an air outlet. Within the housing, a POC treatment layer, a DOC treatment layer, and a DPF treatment layer are sequentially arranged from the air inlet to the air outlet. In this invention, the POC treatment layer, located ahead of the DCO treatment layer, captures carbon particles in the exhaust and catalyzes the reaction of the carbon particles with oxygen to produce carbon dioxide and carbon monoxide, reducing the PM content in the exhaust. This reduces the amount of PM that enters the DOC carrier, thereby reducing the likelihood of PM clogging the DOC carrier.

[0004] The exhaust gas treatment devices of diesel engine harvesters under the above scheme and existing technology generally have the problem that the exhaust gas treatment effect is weakened after the exhaust gas treatment device is used for a long time. The reason for this is mostly due to the blockage and aging of the filter element in the device, which needs to be replaced or cleaned regularly. However, the existing exhaust gas treatment devices generally have the disadvantage of being inconvenient to disassemble and assemble. There is a lack of corresponding structure here, and improvement and optimization are needed. Utility Model Content

[0005] The purpose of the present utility model is to provide a harvester with an exhaust gas treatment device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: A harvester with an exhaust gas treatment device includes a first cavity, a second cavity, a fastening clamp, a connecting leg, and an auxiliary positioning connecting unit;

[0007] A fastening hoop is clamped and fixed in the middle of the first cavity, and the fastening hoop itself is fixedly connected by bolts and nuts. A connecting leg is fixedly connected to the lower end of the fastening hoop. One end of the first cavity is connected to the second cavity through an auxiliary positioning connection unit. Another fastening hoop is clamped and fixed in the middle of the second cavity, and another connecting leg is fixedly connected to the lower end of the fastening hoop.

[0008] Preferably, the auxiliary positioning connection unit includes a first flange, a second flange, a first positioning block, a positioning hole, a first magnet, a second positioning block, a positioning pin, and a second magnet;

[0009] The first flange is connected to one end of the first cavity, a first positioning block is fixedly connected to the first flange, a positioning hole is provided on the first positioning block, a first magnet is fixedly connected in the positioning hole, the second flange is connected to one end of the second cavity, a second positioning block is fixedly connected to the second flange, a positioning pin is connected to the second positioning block, and one end of the positioning pin is fixedly connected to the second magnet.

[0010] Preferably, a first connecting hole is provided on the first flange, a second connecting hole is provided on the second flange, the first flange and the second flange are fastened together by fastening bolts and fastening nuts, a limiting groove is provided in the middle of the first flange, and a sealing ring is placed in the limiting groove.

[0011] Preferably, the first cavity includes a POC treatment filter element, a shock-absorbing rubber ring, a fixed limit block, and a movable limit unit; the outer ring of the POC treatment filter element is covered with a shock-absorbing rubber ring, and the shock-absorbing rubber ring is tightly attached to the inner wall of the first cavity. The first cavity is tightly attached to the right inner wall of the POC treatment filter element and a fixed limit block is provided. The first cavity is tightly attached to the left inner wall of the POC treatment filter element and a movable limit unit is provided.

[0012] Preferably, the movable limiting unit includes a positioning slot, a third magnet, a movable latch, and a fourth magnet; the positioning slot is arranged on the inner walls of the first cavity and the second cavity, the bottom end of the positioning slot is fixedly connected to the third magnet, a movable latch is movably inserted in the positioning slot, and the lower end of the movable latch is fixedly connected to the fourth magnet.

[0013] Preferably, the second cavity includes a DOC treatment filter element, a DPF treatment filter element, a shock-absorbing rubber ring, a fixed limit block and a movable limit unit; the outer ring of the DOC treatment filter element is covered with a shock-absorbing rubber ring, and the shock-absorbing rubber ring is tightly attached to the inner wall of the second cavity, and the second cavity is tightly attached to the inner walls on both sides of the DOC treatment filter element. A fixed limit block is provided at the left inner wall of the second cavity close to the DPF treatment filter element, and a movable limit unit is provided at the right inner wall of the second cavity close to the DPF treatment filter element.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model proposes a harvester with an exhaust gas treatment device, which mainly makes the replacement and cleaning of the filter element more convenient and quick by arranging an auxiliary positioning connection unit and a movable limit unit at the exhaust gas treatment device, reduces the occurrence of clogging and failure of the filter element of the exhaust gas treatment device, and ensures that the exhaust gas emitted by the harvester is always in a standard state, meeting actual practical needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a harvester with an exhaust gas treatment device;

[0017] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0018] Figure 3 for Figure 1 Schematic cross-sectional view of ;

[0019] Figure 4 for Figure 3 Schematic diagram of the enlarged portion B.

[0020] In the figure: first cavity 1, second cavity 2, fastening clamp 3, connecting leg 4, first flange 501, second flange 502, first positioning block 503, positioning hole 504, first magnet 505, second positioning block 506, positioning pin 507, second magnet 508, limiting groove 509, first connecting hole 510, second connecting hole 511, fastening bolt 512, fastening nut 513, sealing ring 601, POC treatment filter element 7, DOC treatment filter element 8, DPF treatment filter element 9, shock-absorbing rubber ring 10, fixed limiting block 11, positioning notch 121, third magnet 122, movable latch 123, fourth magnet 124. DETAILED DESCRIPTION

[0021] In order to clearly and completely describe the purpose and technical solution of the present invention and make its advantages more clearly understood, the following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention and are not intended to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 4 , the utility model provides the following preferred embodiments:

[0023] Example 1: A harvester with an exhaust gas treatment device includes a first cavity 1, a second cavity 2, a fastening clamp 3, a connecting leg 4, and an auxiliary positioning connection unit;

[0024] A fastening hoop 3 is clamped and fixed in the middle of the first cavity 1, and the fastening hoop 3 itself is fixedly connected by bolts and nuts. The lower end of the fastening hoop 3 is fixedly connected to a connecting leg 4. One end of the first cavity 1 is connected to the second cavity 2 through an auxiliary positioning connection unit. Another fastening hoop 3 is clamped and fixed in the middle of the second cavity 2, and the lower end of the fastening hoop 3 is fixedly connected to another connecting leg 4.

[0025] In actual use, one end of the first cavity 1 is connected to the engine exhaust pipe, and the other end is connected to the second cavity 2 through an auxiliary positioning connection unit. The middle of the first cavity 1 is fixed with a fastening clamp 3, and one end of the second cavity 2 discharges exhaust into the atmosphere. The middle of the second cavity 2 is fixed with another fastening clamp 3, and the lower ends of the fastening clamps 3 are connected to connecting legs 4, which are fixedly connected to the harvester frame.

[0026] Example 2: Based on Example 1, the auxiliary positioning connection unit includes a first flange 501, a second flange 502, a first positioning block 503, a positioning hole 504, a first magnet 505, a second positioning block 506, a positioning pin 507, and a second magnet 508;

[0027] The first flange 501 is connected to one end of the first cavity 1, and a first positioning block 503 is fixedly connected to the first flange 501. The first positioning block 503 is provided with a positioning hole 504, and a first magnet 505 is fixedly connected in the positioning hole 504. The second flange 502 is connected to one end of the second cavity 2, and a second positioning block 506 is fixedly connected to the second flange 502, and a positioning pin 507 is connected to the second positioning block 506, and one end of the positioning pin 507 is fixedly connected to the second magnet 508; a first connecting hole 510 is provided on the first flange 501, and a second connecting hole 511 is provided on the second flange 502. The first flange 501 and the second flange 502 are fastened together by fastening bolts 512 and fastening nuts 513. A limiting groove 509 is provided in the middle of the first flange 501, and a sealing ring 601 is placed in the limiting groove 509.

[0028] In actual use, when replacing the filter element and installing the exhaust gas treatment device, it is only necessary to place the sealing ring 601 in the limit groove 509, and then plug the positioning hole 504 on the first positioning block 503 with the positioning pin 507 on the second positioning block 506, wherein the first magnet 505 and the second magnet 508 attract each other to play an auxiliary plug-in role. At this time, the first connecting hole 510 on the first flange 501 and the second connecting hole 511 on the second flange 502 are automatically aligned, and then fastened together by the fastening bolt 512 and the fastening nut 513.

[0029] 7. Example 3: On the basis of Example 1, the first cavity 1 includes a POC treatment filter element 7, a shock-absorbing rubber ring 10, a fixed limit block 11, and a movable limit unit; the outer ring of the POC treatment filter element 7 is covered with a shock-absorbing rubber ring 10, and the shock-absorbing rubber ring 10 is in close contact with the inner wall of the first cavity 1. The first cavity 1 is close to the right inner wall of the POC treatment filter element 7 and is provided with a fixed limit block 11. The first cavity 1 is close to the left inner wall of the POC treatment filter element 7 and is provided with a movable limit unit; the movable limit unit includes a positioning notch 121, a third magnet 122, a movable latch 123, and a fourth magnet 124; the positioning notch 121 is provided on the inner walls of the first cavity 1 and the second cavity 2, the bottom end of the positioning notch 121 is fixedly connected to the third magnet 122, the movable latch 123 is movably inserted in the positioning notch 121, and the lower end of the movable latch 123 is fixedly connected to the fourth magnet 124;

[0030] The second cavity 2 includes a DOC treatment filter element 8, a DPF treatment filter element 9, a shock-absorbing rubber ring 10, a fixed limit block 11 and a movable limit unit; the outer ring of the DOC treatment filter element 8 is covered with a shock-absorbing rubber ring 10, and the shock-absorbing rubber ring 10 is close to the inner wall of the second cavity 2. The second cavity 2 is close to the inner walls on both sides of the DOC treatment filter element 8 and is provided with movable limit units. The second cavity 2 is close to the left inner wall of the DPF treatment filter element 9 and is provided with a fixed limit block 11. The second cavity 2 is close to the right inner wall of the DPF treatment filter element 9 and is provided with a movable limit unit.

[0031] In actual use, the exhaust gas enters the first cavity 1 from the engine exhaust pipe, and passes through the POC treatment filter element 7, the DOC treatment filter element 8, and the DPF treatment filter element 9 in sequence. The POC treatment filter element 7 first captures the carbon particles in the exhaust gas, and catalyzes the carbon particles to react with oxygen to generate carbon dioxide and carbon monoxide under the high temperature of the exhaust gas emission, thereby reducing the content of carbon particles in the exhaust gas, thereby reducing the content of PM in the exhaust gas. The DOC treatment filter element 8 can catalyze nitrogen oxides, hydrocarbons, carbon monoxide and other substances to react with oxygen to generate water, carbon dioxide, nitrogen dioxide and other substances, thereby reducing the content of harmful gases in the exhaust gas. The DPF treatment filter element 9 can further capture the carbon particles in the exhaust gas, and catalyze the reaction of carbon particles with oxygen to generate carbon dioxide, thereby further reducing the content of PM in the exhaust gas. When replacing the filter element, you only need to remove the fastening clamp 3 on the second cavity 2 and the connection between the two cavities. Just pull out the bolts, and then pull out the movable pins 123 of all movable limiting units and the POC treatment filter element 7, DOC treatment filter element 8 and DPF treatment filter element 9 in the cavity. When replacing and installing, after installing the POC treatment filter element 7, DOC treatment filter element 8 and DPF treatment filter element 9 and the movable pin 123, place the sealing ring 601 in the limiting groove 509, and then plug the positioning hole 504 on the first positioning block 503 with the positioning pin 507 on the second positioning block 506, wherein the first magnet 505 and the second magnet 508 attract each other to assist in plugging, at this time, the first connecting hole 510 on the first flange 501 and the second connecting hole 511 on the second flange 502 are automatically aligned, and then fastened together by the fastening bolts 512 and the fastening nuts 513, and finally fix the fastening clamp 3 at the second cavity 2.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A harvester with an exhaust gas treatment device, characterized in that: It comprises a first cavity (1), a second cavity (2), a fastening hoop (3), a connecting leg (4), and an auxiliary positioning connection unit; A fastening hoop (3) is clamped and fixed in the middle of the first cavity (1), and the fastening hoop (3) itself is fixedly connected by bolts and nuts. The lower end of the fastening hoop (3) is fixedly connected to a connecting leg (4). One end of the first cavity (1) is connected to the second cavity (2) through an auxiliary positioning connection unit. Another fastening hoop (3) is clamped and fixed in the middle of the second cavity (2), and the lower end of the fastening hoop (3) is fixedly connected to another connecting leg (4).

2. The harvester with an exhaust gas treatment device according to claim 1, characterized in that: The auxiliary positioning connection unit comprises a first flange (501), a second flange (502), a first positioning block (503), a positioning hole (504), a first magnet (505), a second positioning block (506), a positioning pin (507), and a second magnet (508); The first flange (501) is connected to one end of the first cavity (1), a first positioning block (503) is fixedly connected to the first flange (501), a positioning hole (504) is provided on the first positioning block (503), a first magnet (505) is fixedly connected in the positioning hole (504), the second flange (502) is connected to one end of the second cavity (2), a second positioning block (506) is fixedly connected to the second flange (502), a positioning pin (507) is connected to the second positioning block (506), and a second magnet (508) is fixedly connected to one end of the positioning pin (507).

3. The harvester with an exhaust gas treatment device according to claim 2, characterized in that: The first flange (501) is provided with a first connecting hole (510), and the second flange (502) is provided with a second connecting hole (511). The first flange (501) and the second flange (502) are fastened together by fastening bolts (512) and fastening nuts (513). A limiting groove (509) is provided in the middle of the first flange (501), and a sealing ring (601) is placed in the limiting groove (509).

4. The harvester with an exhaust gas treatment device according to claim 1, characterized in that: The first cavity (1) comprises a POC treatment filter element (7), a shock-absorbing rubber ring (10), a fixed limiting block (11), and a movable limiting unit; the outer ring of the POC treatment filter element (7) is covered with a shock-absorbing rubber ring (10), and the shock-absorbing rubber ring (10) is in close contact with the inner wall of the first cavity (1); the first cavity (1) is provided with a fixed limiting block (11) in close contact with the right inner wall of the POC treatment filter element (7); and the first cavity (1) is provided with a movable limiting unit in close contact with the left inner wall of the POC treatment filter element (7).

5. The harvester with an exhaust gas treatment device according to claim 4, characterized in that: The movable limiting unit comprises a positioning notch (121), a third magnet (122), a movable latch (123), and a fourth magnet (124); the positioning notch (121) is provided on the inner walls of the first cavity (1) and the second cavity (2); the bottom end of the positioning notch (121) is fixedly connected to the third magnet (122); the movable latch (123) is movably inserted into the positioning notch (121); and the lower end of the movable latch (123) is fixedly connected to the fourth magnet (124).

6. The harvester with an exhaust gas treatment device according to claim 1, characterized in that: The second cavity (2) comprises a DOC treatment filter element (8), a DPF treatment filter element (9), a shock-absorbing rubber ring (10), a fixed limit block (11) and a movable limit unit; the outer ring of the DOC treatment filter element (8) is covered with a shock-absorbing rubber ring (10), and the shock-absorbing rubber ring (10) is in close contact with the inner wall of the second cavity (2); movable limit units are provided at the inner walls on both sides of the second cavity (2) in close contact with the DOC treatment filter element (8); a fixed limit block (11) is provided at the inner wall on the left side of the second cavity (2) in close contact with the DPF treatment filter element (9); and a movable limit unit is provided at the inner wall on the right side of the second cavity (2) in close contact with the DPF treatment filter element (9).

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