Anti-clamping stagnation type exhaust gas recirculation valve

Abstract

The utility model relates to the technical field of exhaust gas recirculation valves, in particular to an anti-clamping stagnation type exhaust gas recirculation valve which comprises a valve body and a mounting plate, a mounting groove is formed in the upper surface of the mounting plate, a plurality of first mounting columns are arranged on the upper surface of the mounting plate, and first connecting blocks are rotationally connected to the surfaces of the first mounting columns. An abutting device is arranged at the end, away from the first mounting column, of each first connecting block, an air outlet pipe is in threaded connection with the inner wall of the containing groove, and a fixing device is arranged between the air outlet pipe and the valve body. According to the pressing device, the valve body can be tightly attached to the mounting plate through the elastic pressure of the first spring in the vertical direction; and meanwhile, the air outlet pipe is in threaded connection with the containing groove, a fixing device is arranged, under the elastic effect of a second spring, a second pressing block abuts against a second annular groove, and under double insurance and the influence of vibration, the air outlet pipe is still tightly attached to the air outlet hole.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas recirculation valve technology, and in particular to an anti-jamming exhaust gas recirculation valve. Background Technology

[0002] An exhaust gas recirculation (EGR) valve is an electromechanical integrated product used to guide exhaust gases back into the intake manifold for re-combustion and to regulate the recirculation flow. After gasoline burns in the engine, a portion of the exhaust gases can be re-entered into the intake manifold through the EGR valve to participate in combustion again. This process allows for more complete fuel combustion, reducing energy consumption; it also lowers the temperature of the engine combustion chamber, inhibiting the formation of NOx compounds, reducing heat loss, and reducing the engine load.

[0003] For example, the authorized announcement number "CN209637909U" describes a waste gas recirculation valve. Through the threaded connection between the threaded rod and the L-shaped clamping plate, when the threaded rod rotates, the L-shaped clamping plate can move along the inner wall of the slide groove, thereby disengaging from the second clamping groove, and then disassembling the valve body for cleaning. The outlet pipe, through the rotation of the extrusion plate, causes the clamping block to disengage from the first clamping groove, and then disassembles for easy replacement. In addition, the multi-layer structure inside the air inlet pre-treats the waste gas by absorbing heat and water.

[0004] The above-mentioned and existing technologies have the following drawbacks: The method of fixing the exhaust gas recirculation valve by inserting an L-shaped clamp into the second slot lacks a tightening force along the vertical direction of the valve body, resulting in an incomplete fit between the valve body and the mounting plate. Furthermore, the exhaust gas recirculation valve is only secured to the first slot by a clamping block under the pressure of the compression plate; therefore, vibration can cause an incomplete fit between the exhaust pipe and the exhaust port. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an anti-jamming exhaust gas recirculation valve.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A non-jamming exhaust gas recirculation valve is designed, comprising a valve body and a mounting plate. The mounting plate has an air inlet hole communicating with the valve body on its central surface. The inner wall of the air inlet hole is provided with multiple layers of filter media. The upper surface of the mounting plate has a mounting groove. The lower surface of the valve body has a mounting flange that matches the mounting groove. The upper surface of the mounting plate has multiple first mounting posts. Each of the multiple first mounting posts is rotatably connected to a first connecting block. Each end of the first connecting block away from the first mounting post is provided with a clamping device. The upper surface of the valve body has an air outlet hole. The upper end of the air outlet hole has a receiving groove. The inner wall of the receiving groove is threaded with an air outlet pipe. A fixing device is provided between the air outlet pipe and the valve body.

[0008] Preferably, the clamping device includes a first drive rod, which is slidably connected to a first connecting block. The upper end of the first drive rod is provided with a first end block. A first spring is sleeved on the outside of the first drive rod. The upper end of the first spring is connected to the lower surface of the first end block, and the lower end of the first spring is connected to the upper surface of the first connecting block. The lower end of the first drive rod is provided with a first pressing block. The upper surface of the mounting flange is provided with a first annular groove, and the lower surface of the first pressing block abuts against the lower inner wall of the first annular groove.

[0009] Preferably, a first sealing gasket is provided between the mounting groove and the mounting flange.

[0010] Preferably, the lower inner wall of the mounting groove is provided with a plurality of positioning grooves, and the lower surface of the mounting flange is provided with a plurality of positioning blocks corresponding one-to-one with the positioning grooves, the positioning blocks extending into the positioning grooves.

[0011] Preferably, the fixing device includes two locking components, two mounting seats, and two second drive rods. The two locking components are respectively disposed on the two side surfaces of the valve body, and the two mounting seats are respectively disposed on the two sides of the upper surface of the valve body. The two second drive rods are slidably connected to their corresponding mounting seats. A second end block is provided at the opposite end of the two second drive rods, and a second pressing block is provided at the opposite end of the two second drive rods. A second annular groove is formed on the surface of the air outlet pipe, and the second pressing block abuts against the inner wall of the second annular groove. A stop block is provided in the middle of each of the two second drive rods, and a second spring is sleeved on the outside of the second drive rod. The second spring is disposed between the stop block and the mounting seat on the same side.

[0012] Preferably, the locking component includes a second mounting post, which is disposed on one side surface of the valve body. One end of the second mounting post is rotatably connected to a second connecting block, and one end of the second connecting block is provided with a limiting block. A limiting groove is formed on one side surface of the limiting block.

[0013] Preferably, a second sealing gasket is provided between the air outlet pipe and the lower inner wall of the receiving groove.

[0014] The present invention proposes an anti-jamming waste gas recirculation valve, which has the following advantages: the clamping device, through the elastic pressure of the first spring in the up-down direction, makes the first pressing block press against the first annular groove, so that the valve body and the mounting plate fit tightly; the exhaust pipe is provided for easy disassembly, and the exhaust pipe is threadedly connected to the receiving groove; and the fixing device, under the elastic action of the second spring, makes the second pressing block press against the second annular groove. Under the double protection, even under the influence of vibration, the exhaust pipe still fits tightly with the exhaust hole. Attached Figure Description

[0015] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 2 This is an enlarged view of position A in this utility model;

[0017] Figure 3 This is an enlarged view of position B in this utility model;

[0018] Figure 4 This is a schematic diagram of the limiting block and limiting groove structure of this utility model.

[0019] In the diagram: 1. Valve body; 2. Mounting plate; 3. Air inlet; 4. Multi-layer filter media; 5. Mounting groove; 6. Mounting flange; 7. First mounting post; 8. First connecting block; 9. Air outlet; 10. Receiving groove; 11. Air outlet pipe; 12. First drive rod; 13. First end block; 14. First pressing block; 15. First annular groove; 16. First sealing gasket; 17. Positioning groove; 18. Positioning block; 19. Mounting seat; 20. Second drive rod; 21. Second end block; 22. Second pressing block; 23. Stop block; 24. Second spring; 25. Second mounting post; 26. Second connecting block; 27. Limiting block; 28. Limiting groove; 29. ​​Second annular groove; 30. Second sealing gasket; 31. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 An anti-jamming waste gas recirculation valve includes a valve body 1 and a mounting plate 2. The mounting plate 2 has an air inlet 3 communicating with the valve body 1 on its central surface. The inner wall of the air inlet 3 is provided with multiple layers of filter material 4, which consists of a water-absorbing layer, a heat-absorbing layer, and a heat-insulating layer. These layers can pre-absorb water vapor and heat in the waste gas, ensuring that the waste gas is in a low-temperature and dry state after entering the valve body 1. The upper surface of the mounting plate 2 has a mounting groove 5, and the lower surface of the valve body 1 has a mounting flange 6 that matches the mounting groove 5. The upper surface of the mounting plate 2 has multiple first mounting posts 7, and each of the multiple first mounting posts 7 is rotatably connected to a first connecting block 8. The end of the first connecting block 8 away from the first mounting post 7 is provided with a clamping device. The upper surface of the valve body 1 has an air outlet 9, and the upper end of the air outlet 9 has a receiving groove 10. The inner wall of the receiving groove 10 is threadedly connected to an air outlet pipe 11, and a fixing device is provided between the air outlet pipe 11 and the valve body 1.

[0022] The clamping device includes a first drive rod 12, which is slidably connected to a first connecting block 8. A first end block 13 is provided at the upper end of the first drive rod 12. A first spring 14 is sleeved on the outside of the first drive rod 12. The upper end of the first spring 14 is connected to the lower surface of the first end block 13, and the lower end of the first spring 14 is connected to the upper surface of the first connecting block 8. A first pressing block 15 is provided at the lower end of the first drive rod 12. A first annular groove 16 is provided on the upper surface of the mounting flange 6, and the lower surface of the first pressing block 15 abuts against the lower inner wall of the first annular groove 16.

[0023] A first sealing gasket 17 is provided between the mounting groove 5 and the mounting flange 6. The first sealing gasket 17 is provided to further increase the tightness of the connection between the mounting groove 5 and the mounting flange 6.

[0024] The lower inner wall of the mounting groove 5 is provided with multiple positioning grooves 18, and the lower surface of the mounting flange 6 is provided with multiple positioning blocks 19 that correspond one-to-one with the positioning grooves 18. The positioning blocks 19 extend into the positioning grooves 18. Positioning can be performed quickly by extending the positioning blocks 19 into the positioning grooves 18.

[0025] The fixing device includes two locking components, two mounting seats 20, and two second drive rods 21. The two locking components are respectively disposed on the two side surfaces of the valve body 1. The two mounting seats 20 are respectively disposed on the two sides of the upper surface of the valve body 1. The two second drive rods 21 are slidably connected to the corresponding mounting seats 20. The opposite ends of the two second drive rods 21 are provided with second end blocks 22, and the opposite ends of the two second drive rods 21 are provided with second pressing blocks 23. The surface of the air outlet pipe 11 is provided with a second annular groove 30. The second pressing block 23 abuts against the inner wall of the second annular groove 30. The middle of each of the two second drive rods 21 is provided with a stop block 24. A second spring 25 is sleeved on the outside of the second drive rod 21. The second spring 25 is disposed between the stop block 24 and the mounting seat 20 on the same side.

[0026] The locking assembly includes a second mounting post 26, which is disposed on one side surface of the valve body 1. One end of the second mounting post 26 is rotatably connected to a second connecting block 27. One end of the second connecting block 27 is provided with a limiting block 28, and a limiting groove 29 is formed on one side surface of the limiting block 28.

[0027] A second sealing gasket 31 is provided between the air outlet pipe 11 and the lower inner wall of the receiving groove 10.

[0028] Working principle: When cleaning the inside of valve body 1 is required, the clamping device pulls the first end block 13 to disengage the first pressing block 15 from the first annular groove 16. Then, the first connecting block 8 is rotated, allowing valve body 1 to be removed for cleaning. After cleaning, the first sealing gasket 17 is installed into the mounting groove 5, and then the positioning block 19 is inserted into the positioning groove 18, allowing the mounting flange 6 to enter the mounting groove 5. By lifting the first end block 13 and simultaneously rotating the first connecting block 8, the first pressing block 15 is pressed against the first annular groove 16 under the elastic pressure of the first spring 14, completing the installation. In summary, the clamping device, through the elastic pressure of the first spring 14 in the up-down direction, makes the first pressing block 15 press against the first annular groove 16, ensuring a tight fit between valve body 1 and mounting plate 2.

[0029] When the vent pipe 11 is damaged and needs to be replaced, the second end block 22 is pulled first through the fixing device to disengage the second pressing block 23 from the second annular groove 30. Then, through the locking assembly, the second connecting block 27 is rotated to engage the limiting groove 29 with the second end block 22. The vent pipe 11 can then be unscrewed from the receiving groove 10 for replacement. The new vent pipe 11 is then screwed onto the receiving groove 10, and the second connecting block 27 is rotated down to disengage the limiting groove 29 from the second end block 22. Under the elastic action of the second spring 25, the second pressing block 23 presses against the second annular groove 30. In summary, the vent pipe 11 is designed for easy disassembly. The vent pipe 11 is threadedly connected to the receiving groove 10, and the fixing device, under the elastic action of the second spring 25, ensures that the second pressing block 23 presses against the second annular groove 30. With this double protection, even under vibration, the vent pipe 11 remains tightly fitted to the vent hole 9.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A type of anti-jamming exhaust gas recirculation valve, comprising a valve body (1) and a mounting plate (2), characterized in that, The mounting plate (2) has an air inlet (3) that communicates with the valve body (1) on its middle surface. The inner wall of the air inlet (3) is provided with multiple layers of filter material (4). The mounting plate (2) has an installation groove (5) on its upper surface. The valve body (1) has an installation flange (6) that matches the installation groove (5) on its lower surface. The mounting plate (2) has multiple first mounting posts (7) on its upper surface. The surfaces of the multiple first mounting posts (7) are rotatably connected to first connecting blocks (8). The end of the first connecting block (8) away from the first mounting post (7) is provided with a clamping device. The valve body (1) has an air outlet (9) on its upper surface. The upper end of the air outlet (9) has a receiving groove (10). The inner wall of the receiving groove (10) is threaded with an air outlet pipe (11). The air outlet pipe (11) is fixed between the valve body (1) and the valve body (1).

2. The anti-jamming exhaust gas recirculation valve according to claim 1, characterized in that, The clamping device includes a first drive rod (12), which is slidably connected to a first connecting block (8). The upper end of the first drive rod (12) is provided with a first end block (13). A first spring (14) is sleeved on the outside of the first drive rod (12). The upper end of the first spring (14) is connected to the lower surface of the first end block (13), and the lower end of the first spring (14) is connected to the upper surface of the first connecting block (8). The lower end of the first drive rod (12) is provided with a first pressing block (15). The upper surface of the mounting flange (6) is provided with a first annular groove (16), and the lower surface of the first pressing block (15) abuts against the lower inner wall of the first annular groove (16).

3. The anti-jamming exhaust gas recirculation valve according to claim 1, characterized in that, A first sealing gasket (17) is provided between the mounting groove (5) and the mounting flange (6).

4. The anti-jamming exhaust gas recirculation valve according to claim 1, characterized in that, The lower inner wall of the mounting groove (5) is provided with multiple positioning grooves (18), and the lower surface of the mounting flange (6) is provided with multiple positioning blocks (19) that correspond one-to-one with the positioning grooves (18). The positioning blocks (19) extend into the positioning grooves (18).

5. The anti-jamming exhaust gas recirculation valve according to claim 1, characterized in that, The fixing device includes two locking components, two mounting seats (20) and two second drive rods (21). The two locking components are respectively disposed on the two sides of the valve body (1). The two mounting seats (20) are respectively disposed on the two sides of the upper surface of the valve body (1). The two second drive rods (21) are slidably connected to the corresponding mounting seats (20). The two second drive rods (21) are provided with a second end block (22) at the opposite end and a second pressing block (23) at the opposite end. The surface of the air outlet pipe (11) is provided with a second annular groove (30). The second pressing block (23) abuts against the inner wall of the second annular groove (30). The middle part of the two second drive rods (21) is provided with a stop block (24). A second spring (25) is sleeved on the outside of the second drive rod (21). The second spring (25) is disposed between the stop block (24) and the mounting seat (20) on the same side.

6. The anti-jamming exhaust gas recirculation valve according to claim 5, characterized in that, The locking assembly includes a second mounting post (26), which is disposed on one side surface of the valve body (1). One end of the second mounting post (26) is rotatably connected to a second connecting block (27), and one end of the second connecting block (27) is provided with a limiting block (28). A limiting groove (29) is opened on one side surface of the limiting block (28).

7. The anti-jamming exhaust gas recirculation valve according to claim 1, characterized in that, A second sealing gasket (31) is provided between the air outlet pipe (11) and the lower inner wall of the receiving groove (10).

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