A waste gas recirculation valve

Abstract

This utility model belongs to the field of circulation valve technology, specifically relating to an exhaust gas circulation valve, comprising: a valve body, a base plate at the bottom of the valve body, a side pipe on the top periphery of the valve body, and a docking plate at the end of the side pipe; a snap-fit ​​structure, comprising multiple snap-fit ​​structures, all disposed on the base plate, for connecting the base plate to the vehicle body; and a latching structure, disposed on the side pipe near the docking plate, for connecting the end of the side pipe to the end of the external pipe, thereby solving the problem that existing exhaust gas circulation valves mostly use bolts to connect to the external pipe and the vehicle body, which results in slow connection speed and low efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of circulation valve technology, and specifically relates to an exhaust gas circulation valve. Background Technology

[0002] The exhaust gas recirculation valve, commonly known as the EGR valve, is a key component in the emission control system of a car engine. Its function is to guide a portion of the exhaust gas emitted after engine combustion back into the engine's intake manifold, where it mixes with fresh air and fuel and participates in combustion again.

[0003] However, when existing exhaust gas recirculation valves are assembled with corresponding components in the vehicle engine emission control system, they are mostly connected to the external pipe and vehicle body with bolts, which results in slow connection speed and low efficiency. Utility Model Content

[0004] Based on the problems mentioned in the background technology above, this utility model provides an exhaust gas recirculation valve to solve the problems of slow connection speed and low efficiency in existing exhaust gas recirculation valves, which mostly use bolts to connect to external pipes and vehicle bodies.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An exhaust gas recirculation valve, comprising:

[0007] The valve body has a bottom plate at its bottom and a side tube on its top periphery, with a connecting plate at the end of the side tube.

[0008] The snap-fit ​​structure is provided in multiple ways, and all of them are set on the base plate for connecting the base plate to the vehicle body;

[0009] A snap-fit ​​structure is provided on the side tube near the docking plate and is used to connect the end of the side tube to the end of the outer tube.

[0010] Based on the above technical solution, the present invention has made the following improvements:

[0011] Furthermore, the snap-fit ​​structure includes screw holes, through holes, and stabilizing posts. Multiple screw holes and through holes are provided, with each screw hole located on the vehicle body and each through hole located on the base plate. Each screw hole corresponds to a corresponding through hole. A stabilizing post is threaded into each screw hole and is located within the through hole. A slot is provided around the stabilizing post, and a locking block and a retaining spring are engaged within the slot. The retaining spring is located between the engaging end of the locking block and the bottom of the slot. A limiting post is provided on the locking block, and a limiting groove is provided on the side wall of the slot. The limiting post is located within the limiting groove.

[0012] Furthermore, the grabbing structure includes a threaded part, a threaded ring, and a second docking plate. The threaded part is disposed on the tube body of the side tube near the first docking plate. The threaded ring is screwed into the threaded part. Multiple hook rods are arranged in an array laterally on the outer peripheral wall of the threaded ring. The second docking plate is disposed at the end of the outer tube. Multiple through grooves are arranged in an array on the peripheral side wall of the second docking plate. The hook ends of each hook rod extend through the corresponding through groove and hook onto the side wall of the second docking plate facing away from the first docking plate.

[0013] Furthermore, the screw ring is composed of two open arc-shaped bodies, and each end of the two arc-shaped bodies is provided with a mating block. Each end of the mating block of one arc-shaped body is provided with a stud, and each end of the mating block of the other arc-shaped body is provided with a light hole. The stud is inserted into the light hole, and a nut is screwed into the end of the stud. One side of the nut is tightly attached to the side wall of the mating block.

[0014] The beneficial effects of this utility model are:

[0015] 1. The snap-fit ​​structure allows for quick snap-fit ​​connection between the base plate on the valve body and the vehicle body, thus avoiding the use of bolts for connection.

[0016] 2. The clamping structure allows for quick clamping connection between the end of the side pipe on the valve body and the end of the outer pipe, thus avoiding the use of bolts for connection. Attached Figure Description

[0017] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0018] Figure 1 This is a structural diagram of a waste gas recirculation valve according to the present invention;

[0019] Figure 2 This is an assembly diagram of a waste gas recirculation valve according to the present invention;

[0020] Figure 3 This is an assembly cross-sectional view of an exhaust gas recirculation valve according to the present invention.

[0021] The attached diagram is labeled as follows:

[0022] 101. Valve body; 102. Base plate; 103. Side pipe; 104. Connecting plate one; 201. Threaded hole; 202. Through hole; 203. Stabilizing column; 204. Slot; 205. Locking block; 206. Abutting spring; 207. Limiting column; 208. Limiting groove; 301. Threaded part; 302. Threaded ring; 303. Hook rod; 304. Connecting plate two; 305. Through groove; 401. Connecting block; 402. Threaded stud; 403. Nut. Detailed Implementation

[0023] like Figures 1-3 As shown, an exhaust gas recirculation valve includes:

[0024] The valve body 101 has a base plate 102 at its bottom and a snap-fit ​​structure. Multiple snap-fit ​​structures are provided and are all located on the base plate 102. The snap-fit ​​structure includes screw holes 201, through holes 202 and stabilizer pins 203. Multiple screw holes 201 are located on the vehicle body and multiple through holes 202 are located on the base plate 102. The positions of each screw hole 201 and each through hole 202 are corresponding. A stabilizer pin 203 is screwed into each screw hole 201. During the initial assembly, the bottom thread of the stabilizer pin 203 is screwed into the screw hole 201, so that the stabilizer pin 203 is assembled into the screw hole 201 of the vehicle body and does not need to be removed thereafter.

[0025] The stabilizing post 203 is located inside the through hole 202. A slot 204 is provided around the stabilizing post 203. A locking block 205 and a retaining spring 206 are locked in the slot 204. The retaining spring 206 is located between the locking end of the locking block 205 and the bottom of the slot 204. The retaining spring 206 can push the locking block 205 out of the slot 204. A limiting post 207 is provided on the locking block 205. A limiting groove 208 is provided on the side wall of the slot 204. The limiting post 207 is located in the limiting groove 208. The combination of the limiting post 207 and the limiting groove 208 can limit the locking block 205 and prevent the locking block 205 from completely coming out of the slot 204.

[0026] During assembly, the bottom thread of the stabilizer 203 is screwed into the screw hole 201, so that the stabilizer 203 is assembled into the screw hole 201 of the vehicle body and cannot be removed. Then, by pressing the locking block 205, the abutment spring 206 is contracted, causing the locking block 205 to retract into the slot 204. At this time, the through hole 202 on the bottom plate 102 of the valve body 101 is fitted onto the stabilizer 203 and the bottom plate 102 is moved down, so that the bottom of the bottom plate 102 is attached to the vehicle body. Then, the pressing of the locking block 205 is released, causing the abutment spring 206 to rebound. Under the abutment action of the abutment spring 206, one end of the locking block 205 extends out of the slot 204, so that the bottom of the locking block 205 is attached to the top of the bottom plate 102, thereby clamping the bottom plate 102 between the locking block 205 and the vehicle body, so as to achieve quick snap-fit ​​between the bottom plate 102 on the valve body 101 and the vehicle body, thus avoiding the use of bolts for connection.

[0027] A side tube 103 is provided on the top periphery of the valve body 101. A first docking plate 104 is provided at the end of the side tube 103. A grabbing structure is provided on the tube body of the side tube 103 near the first docking plate 104. The grabbing structure includes a threaded part 301, a screw ring 302 and a second docking plate 304. The threaded part 301 is provided on the tube body of the side tube 103 near the first docking plate 104. The screw ring 302 is screwed into the threaded part 301. The screw ring 302 can rotate and move on the threaded part 301. Multiple hook rods 303 are arranged in an array laterally on the outer peripheral wall of the screw ring 302. The second docking plate 304 is provided at the end of the outer tube. Multiple through grooves 305 are arranged in an array on the peripheral side wall of the second docking plate 304. The hook end of each hook rod 303 extends through the corresponding through groove 305 and hooks onto the side wall of the second docking plate 304 facing away from the first docking plate 104.

[0028] During assembly, the mating disc 104 on the side tube 103 of the valve body 101 is fastened to the mating disc 304 on the outer tube. The hook ends of each hook rod 303 on the threaded ring 302 extend through the corresponding through grooves 305 on the mating disc 304 to the side wall of the mating disc 304 facing away from the mating disc 104. Then, by rotating the threaded ring 302, it rotates and moves away from the outer tube on the threaded part 301, so that the hook ends of each hook rod 303 are offset from the corresponding through grooves 305. This causes the hook ends of each hook rod 303 to hook onto the side wall of the mating disc 304 facing away from the mating disc 104, thereby achieving a quick snap-fit ​​connection between the mating disc 104 at the end of the side tube 103 on the valve body 101 and the mating disc 304 at the end of the outer tube, thus avoiding the use of bolts for connection.

[0029] The threaded ring 302 is composed of two open arc-shaped bodies. Each end of the two arc-shaped bodies is provided with a mating block 401. Each end of the mating block 401 of one arc-shaped body is provided with a stud 402, and each end of the mating block 401 of the other arc-shaped body is provided with a smooth hole. The stud 402 is inserted into the smooth hole, and a nut 403 is screwed into the end of the stud 402. One side of the nut 403 is tightly attached to the side wall of the mating block 401. By setting the threaded ring 302 into two open arc-shaped bodies, it is easy to assemble the threaded ring 302 into the threaded part 301.

[0030] During assembly, the two arc-shaped bodies are snapped onto the threaded part 301. Then, the studs 402 on the mating blocks 401 at both ends of one arc-shaped body are inserted into the open holes on the mating blocks 401 at both ends of the other arc-shaped body. Finally, the nuts 403 are screwed into the studs 402, so that one side of the nuts 403 fits tightly against the side wall of the mating block 401. This connects and assembles the two snapped arc-shaped bodies at both ends, forming a complete ring.

[0031] The present invention has been described in detail above. The specific embodiments are provided only to help understand the method and core idea of ​​the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An exhaust gas recirculation valve characterized by: include: The valve body (101) has a bottom plate (102) at its bottom and a side tube (103) on its top periphery. The end of the side tube (103) is provided with a docking plate (104). The system includes multiple snap-fit ​​structures, all mounted on a base plate (102) for connecting the base plate (102) to the vehicle body. Each snap-fit ​​structure includes screw holes (201), through holes (202), and stabilizer posts (203). Multiple screw holes (201) and through holes (202) are provided. The screw holes (201) are located on the vehicle body, and the through holes (202) are located on the base plate (102). Each screw hole (201) corresponds to a corresponding through hole (202), and each screw hole (201) is threaded with a certain amount of material. The stabilizer (203) is located inside the through hole (202). A slot (204) is provided on the periphery of the stabilizer (203). A block (205) and a stop spring (206) are locked in the slot (204). The stop spring (206) is located between the locking end of the block (205) and the bottom of the slot (204). A limit post (207) is provided on the block (205). A limit groove (208) is provided on the side wall of the slot (204). The limit post (207) is located in the limit groove (208). A snap-fit ​​structure is provided on the tube body of the side tube (103) near the docking plate (104) for connecting the end of the side tube (103) to the end of the outer tube.

2. A waste gate valve according to claim 1, wherein: The grabbing structure includes a threaded part (301), a screw ring (302), and a second docking plate (304). The threaded part (301) is disposed on the tube body of the side tube (103) near the first docking plate (104). The screw ring (302) is screwed into the threaded part (301). Multiple hook rods (303) are arranged in a horizontal array on the outer peripheral wall of the screw ring (302). The second docking plate (304) is disposed at the end of the outer tube. Multiple through grooves (305) are arranged in an array on the peripheral side wall of the second docking plate (304). The hook end of each hook rod (303) extends through the corresponding through groove (305) and hooks onto the side wall of the second docking plate (304) facing away from the first docking plate (104).

3. A waste gate valve according to claim 2, wherein: The threaded ring (302) is composed of two open arc-shaped bodies. Both ends of the two arc-shaped bodies are provided with mating blocks (401). One arc-shaped body has a stud (402) on each of the mating blocks (401) at both ends, and the other arc-shaped body has a light hole on each of the mating blocks (401) at both ends. The stud (402) is inserted into the light hole, and a nut (403) is screwed into the end of the stud (402). One side of the nut (403) is tightly attached to the side wall of the mating block (401).

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