Environment-friendly exhaust system of diesel fork lift truck

Abstract

The environment-friendly exhaust system of the diesel fork lift truck comprises a filter assembly and a catalytic oxidation assembly, the filter assembly comprises a shell, a filter element and a spring, the shell is provided with a filter cavity, an exhaust inlet and an exhaust outlet, the exhaust inlet and the exhaust outlet both communicate with the filter cavity, and the filter element is arranged in the filter cavity. The filter element is located in the filter cavity and located between the exhaust inlet and the exhaust outlet, the filter element is connected to the shell in a sliding mode in the axis direction of the filter cavity, one end of the spring is connected with the shell, and the other end of the spring is connected with the filter element. The device has the effects of reducing the replacement frequency of the filter element, improving the filtering effect and being green and environment-friendly.

Description

Technical Field

[0001] The present application relates to the field of internal combustion forklifts, and in particular to an environmentally friendly exhaust system for internal combustion forklifts. Background Art

[0002] The exhaust of internal combustion forklifts is somewhat polluting and needs to be discharged through an environmentally friendly exhaust system.

[0003] In related technologies, the environmentally friendly exhaust system of an internal combustion forklift includes a filter component and a catalytic oxidation component. The exhaust gas first passes through the filter component and then through the catalytic oxidation component. The filter component generally includes a filter element and a housing, and the filter element is located in the housing.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: after long-term use, the filter element is easily clogged, which makes it difficult for the exhaust gas to pass through the filter element, resulting in low filtering effect, requiring frequent replacement, and is not environmentally friendly. Utility Model Content

[0005] In order to reduce the frequency of filter element replacement, improve filtering effects, and be environmentally friendly, the present application provides an environmentally friendly exhaust system for an internal combustion forklift.

[0006] The environmentally friendly exhaust system for an internal combustion forklift provided in this application adopts the following technical solutions:

[0007] An environmentally friendly exhaust system for an internal combustion forklift, comprising a filter assembly and a catalytic oxidation assembly, the filter assembly comprising a housing, a filter element and a spring, the housing having a filter chamber, an exhaust inlet and an exhaust outlet, the exhaust inlet and the exhaust outlet both being connected to the filter chamber, the exhaust outlet being connected to the inlet of the catalytic oxidation assembly, the filter element being located in the filter chamber and between the exhaust inlet and the exhaust outlet, the filter element being slidably connected to the housing along the axial direction of the filter chamber, one end of the spring being connected to the housing, and the other end of the spring being connected to the filter element.

[0008] By adopting the above technical solution, when the exhaust gas passes through the filter element, it will drive the filter element to move, and the spring will drive the filter element to reset. In the repeated process, some large particles of pollutants attached to the filter element will be easily shaken off, reducing the blockage of the filter element, improving the filtering effect, and being green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of a specific embodiment of the present application.

[0010] Figure 2 yes Figure 1 Enlarged schematic diagram of circle A in the middle.

[0011] Figure 3It is a three-dimensional cross-sectional schematic diagram of the filter component.

[0012] Figure 4 yes Figure 3 Schematic cross-sectional view of .

[0013] Figure 5 yes Figure 4 Enlarged schematic diagram of circle B in the middle.

[0014] Figure numerals: 1. Catalytic oxidation component; 2. Filter component; 21. Housing; 211. First shell; 212. Second shell; 213. Filter chamber; 214. Exhaust inlet; 215. Exhaust outlet; 22. Filter element; 221. Groove; 23. Spring; 3. Fixing rod; 4. Spiral portion; 41. Brush body; 42. Through hole; 5. Blocking filter; 51. Blocking wall; 52. Receiving groove; 6. Horizontal rod. DETAILED DESCRIPTION

[0015] The following is combined with Figure 1-5 This application is described in further detail.

[0016] The embodiment of the present application discloses an environmentally friendly exhaust system for an internal combustion forklift. Figure 1 、 Figure 2 as well as Figure 3 The environmentally friendly exhaust system for an internal combustion forklift includes a filter assembly 2 and a catalytic oxidation assembly 1. Filter assembly 2 includes a housing 21, a filter element 22, and a spring 23. Housing 21 has a filter chamber 213, an exhaust inlet 214, and an exhaust outlet 215. Exhaust inlet 214 and exhaust outlet 215 are both connected to filter chamber 213, and exhaust outlet 215 is connected to the inlet of catalytic oxidation assembly 1. Filter element 22 is located in filter chamber 213 and between exhaust inlet 214 and exhaust outlet 215. Filter element 22 is slidably connected to housing 21 along the axis of filter chamber 213. One end of spring 23 is connected to housing 21, and the other end of spring 23 is connected to filter element 22. Specifically, catalytic oxidation assembly 1 is a three-way catalytic converter.

[0017] During use, the exhaust gas and the spring 23 drive the filter element 22 to shake, so that some impurities blocked by the filter element 22 are shaken off, reducing the risk of the filter element 22 being blocked, reducing the frequency of replacing the filter element 22, improving the filtering effect, and being green and environmentally friendly; in addition, the more the filter element 22 is blocked, the more obvious the shaking effect of the exhaust gas and the spring 23 on the filter element 22, and it is easier to shake off some impurities.

[0018] Specifically, refer to Figure 3 as well as Figure 4The filter element 22 is barrel-shaped and has a groove 221. Along the axis of the filter chamber 213, the filter element 22 is at least partially located between the groove 221 and the exhaust inlet 214. The spring 23 is located within the groove 221. The environmentally friendly exhaust system for an internal combustion forklift includes a horizontal rod 6 connected to the housing 21. The horizontal rod 6 is at least partially located at the exhaust inlet 214. One end of the spring 23 is connected to the horizontal rod 6, and the other end of the spring 23 contacts the bottom of the groove 221. The barrel-shaped filter element 22 ensures that if the filter element 22 near the exhaust inlet 214 becomes clogged, the sidewalls of the filter element 22 can still provide filtering.

[0019] In some embodiments, reference Figure 3 as well as Figure 4 The environmentally friendly exhaust system for an internal combustion forklift includes a fixed rod 3 connected to the housing 21. The length of the fixed rod 3 is parallel to the sliding direction of the filter element 22. The filter element 22 is slidably mounted on the fixed rod 3. Specifically, the fixed rod 3 is at least partially located in the groove 221. The upper end of the fixed rod 3 passes through the filter element 22. The fixed rod 3 and the filter element 22 are slidably and sealingly engaged. The lower end of the fixed rod 3 is connected to the horizontal rod 6. Furthermore, a spring 23 is mounted on the fixed rod 3. The fixed rod 3 can limit the spring 23 to a certain extent.

[0020] In some embodiments, reference Figure 3 as well as Figure 4 The environmentally friendly exhaust system of the internal combustion forklift includes a spiral portion 4, which is located in the filter cavity 213 and between the filter element 22 and the inner wall of the housing 21. Furthermore, along the radial direction of the filter cavity 213, the spiral portion 4 is located between the filter element 22 and the inner wall of the housing 21.

[0021] Specifically, refer to Figure 3 as well as Figure 4 When the exhaust gas enters the space between the spiral portion 4 and the inner wall of the outer shell 21, the exhaust gas spirals forward along the spiral portion 4. Under the action of centrifugal force, large-mass impurities will be thrown to the inner wall of the outer shell 21, and small impurities will be blocked by the filter element 22, further reducing the risk of clogging of the filter element 22. It is green and environmentally friendly and has high filtering capacity.

[0022] In some embodiments, reference Figure 3 as well as Figure 4 The spiral portion 4 is connected to the housing 21. Several brushes 41 are connected to the wall of the spiral portion 4 near the filter element 22. These brushes 41 are in contact with the filter element 22. Specifically, along the radial direction of the filter cavity 213, the brushes 41 are located between the spiral portion 4 and the filter element 22. Specifically, the brushes 41 are made of high-temperature resistant plastic or metal.

[0023] When the exhaust gas and the spring 23 drive the filter element 22 to vibrate, the brush body 41 contacts the filter element 22 , which can further sweep away impurities attached to the filter element 22 , thereby further improving the filtering effect of the filter element 22 .

[0024] In some embodiments, reference Figure 3 as well as Figure 4 The environmentally friendly exhaust system of the internal combustion forklift includes a blocking filter 5 and a blocking wall 51. The blocking filter 5 is connected to the filter element 22. The blocking filter 5 is located between the filter element 22 and the inner wall of the outer shell 21. The blocking wall 51 is connected to the blocking filter 5. The blocking wall 51, the blocking filter 5 and the outer wall of the filter element 22 form a receiving groove 52. The receiving groove 52 is located between the blocking filter 5 and the spiral portion 4.

[0025] Specifically, refer to Figure 3 as well as Figure 4 Along the axis of the filter chamber 213, the blocking filter 5 and the blocking wall 51 are located between the exhaust outlet 215 and the spiral portion 4. The blocking filter 5 and the filter element 22 are integrally formed. The blocking wall 51 and the blocking filter 5 are both annular in shape. Along the radial direction of the filter chamber 213, the blocking wall 51 and the blocking filter 5 are at least partially located on one side of the filter element 22. The blocking wall 51 and the blocking filter 5 are integrally formed. During use, impurities dropped by centrifugal force and the action of the brush body 41 are received by the receiving groove 52, further reducing obstruction of the filter element 22.

[0026] In some embodiments, reference Figure 3 as well as Figure 4 The housing 21 includes a first housing 211 and a second housing 212. The first housing 211 has a filter chamber 213 and an exhaust inlet 214, and the second housing 212 has an exhaust outlet 215. The first housing 211 and the second housing 212 are detachably connected. The first housing 211 is at least partially located within the second housing 212, and the first housing 211 and the second housing 212 are threadedly connected. Specifically, the horizontal rod 6 is fixedly connected to the second housing 212, and the filter element 22 is slidably connected to the first housing 211.

[0027] Specifically, during installation, the filter element 22 can be first sleeved on the fixing rod 3 for pre-positioning, and then the first shell 211 is sleeved onto the filter element 22, and then the first shell 211 and the second shell 212 are threadedly matched, which is convenient for installation.

[0028] In some embodiments, reference Figure 4 as well as Figure 5 The spiral portion 4 has a through hole 42, which passes through the spiral portion 4 along the axial direction of the filter cavity 213. Part of the impurities thrown off by the centrifugal force can fall directly into the receiving groove 52 through the through hole 42 on the spiral portion 4, which is more convenient.

[0029] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An environmentally friendly exhaust system for an internal combustion forklift, characterized by: The invention comprises a filter assembly (2) and a catalytic oxidation assembly (1), wherein the filter assembly (2) comprises a housing (21), a filter element (22) and a spring (23), wherein the housing (21) has a filter chamber (213), an exhaust inlet (214) and an exhaust outlet (215), wherein the exhaust inlet (214) and the exhaust outlet (215) are both communicated with the filter chamber (213), and the exhaust outlet (215) is communicated with the inlet of the catalytic oxidation assembly (1), wherein the filter element (22) is located in the filter chamber (213) and between the exhaust inlet (214) and the exhaust outlet (215), wherein the filter element (22) is slidably connected to the housing (21) along the axial direction of the filter chamber (213), wherein one end of the spring (23) is connected to the housing (21), and the other end of the spring (23) is connected to the filter element (22).

2. The environmentally friendly exhaust system for an internal combustion forklift according to claim 1, characterized in that: The environmentally friendly exhaust system of the internal combustion forklift comprises a fixing rod (3), the fixing rod (3) being connected to the housing (21), the length direction of the fixing rod (3) being parallel to the sliding direction of the filter element (22), and the filter element (22) being slidingly sleeved on the fixing rod (3).

3. The environmentally friendly exhaust system for an internal combustion forklift according to claim 1, characterized in that: The environmentally friendly exhaust system of the internal combustion forklift comprises a spiral portion (4), wherein the spiral portion (4) is located in the filter cavity (213), and the spiral portion (4) is located between the filter element (22) and the inner side wall of the housing (21).

4. The environmentally friendly exhaust system for an internal combustion forklift according to claim 3, characterized in that: The spiral portion (4) is connected to the housing (21), and a wall surface of the spiral portion (4) close to the filter element (22) is connected to a plurality of brush bodies (41), and the plurality of brush bodies (41) are in contact with the filter element (22).

5. The environmentally friendly exhaust system for an internal combustion forklift according to claim 3 or 4, characterized in that: The environmentally friendly exhaust system of the internal combustion forklift comprises a blocking filter (5) and a blocking wall (51), wherein the blocking filter (5) is connected to the filter element (22), the blocking filter (5) is located between the filter element (22) and the inner wall of the housing (21), the blocking wall (51) is connected to the blocking filter (5), the blocking wall (51), the blocking filter (5) and the outer wall of the filter element (22) form a receiving groove (52), and the receiving groove (52) is located between the blocking filter (5) and the spiral portion (4).

6. The environmentally friendly exhaust system for an internal combustion forklift according to claim 1, characterized in that: The housing (21) comprises a first shell (211) and a second shell (212); the first shell (211) has the filter cavity (213) and the exhaust inlet (214); the second shell (212) has the exhaust outlet (215); and the first shell (211) and the second shell (212) are detachably connected.

7. The environmentally friendly exhaust system for an internal combustion forklift according to claim 6, characterized in that: The first shell (211) is at least partially located inside the second shell (212), and the first shell (211) is threadedly connected to the second shell (212).

8. The environmentally friendly exhaust system for an internal combustion forklift according to claim 3, characterized in that: The spiral portion (4) has a through hole (42), and the through hole (42) passes through the spiral portion (4) along the axial direction of the filter cavity (213).

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