Guide stabilizing assembly of exhaust gas recirculation valve

Abstract

The utility model discloses a guide stabilizing assembly of an exhaust gas recirculation valve, which relates to the technical field of recirculation valves, and comprises a recirculation valve body, a connecting gear arranged on the recirculation valve body, an external motor arranged on the recirculation valve body, a driving gear fixedly connected on the external motor, and a guide stabilizing assembly arranged on the exhaust gas recirculation valve body, the driving gear and the connecting gear are meshed together, a guide groove is formed in the upper side of the inner wall of the front side of the recirculation valve body, a fixing pin is inserted into the inner wall of the guide groove in a sliding mode, two screws are rotated through two rotating discs, the two screws move towards the opposite positions, and meanwhile two arc-shaped concave connecting plates are pushed to move towards the opposite positions. And four fourth reset springs are stretched, and two arc-shaped concave connecting plates move to opposite positions, so that two rubber gaskets slowly make contact with the upper surface and the lower surface of the guide ring, the upper outer wall and the lower outer wall of the guide ring are supported and stabilized, the guide ring is prevented from being separated from a fixing pin after working for a long time, and the service life of the guide ring is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of recirculation valves, and particularly relates to a guiding and stabilizing component of an exhaust gas recirculation valve. Background Technique

[0002] The exhaust gas recirculation valve is an electromechanical integration product installed on a diesel engine to control the amount of exhaust gas recirculated back to the intake system. It is usually located on the right side of the intake manifold, near the throttle body, and is connected to it by a short metal pipe leading to the exhaust manifold. Its function is to control the amount of exhaust gas entering the intake manifold, so that a certain amount of exhaust gas flows into the intake manifold for recirculation. The exhaust gas recirculation valve is a very important and key component in the exhaust gas recirculation device.

[0003] In the traditional exhaust gas recirculation valve, there is a lack of a stabilizing device in the connection between the fixed pin and the guiding ring. Usually, the guiding ring is only sleeved on the outer wall of the fixed pin. However, during long-term operation or due to factors such as vibration, the guiding ring may become detached from the outer wall of the fixed pin, resulting in a reduction in the service life of the guiding ring and the stability of the fixed pin. Content of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a guiding and stabilizing component of an exhaust gas recirculation valve, which can solve the problem that in the traditional exhaust gas recirculation valve, there is a lack of a stabilizing device in the connection between the fixed pin and the guiding ring. Usually, the guiding ring is only sleeved on the outer wall of the fixed pin. However, during long-term operation or due to factors such as vibration, the guiding ring may become detached from the outer wall of the fixed pin, resulting in a reduction in the service life of the guiding ring and the stability of the fixed pin.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A guiding and stabilizing component of an exhaust gas recirculation valve, including a recirculation valve body, a connecting gear is arranged on the recirculation valve body, an external motor is arranged on the recirculation valve body, a driving gear is fixedly connected to the external motor, the driving gear is meshed with the connecting gear, a guiding groove is opened on the upper side of the inner wall of the front side of the recirculation valve body, and a fixed pin is slidably inserted into the inner wall of the guiding groove;

[0006] Wherein, a sliding groove is opened on the front inner wall of the guiding groove, a sliding block is slidably connected inside the sliding groove, and third return springs are fixedly connected to the upper and lower surfaces of one end of the sliding block located inside the sliding groove;

[0007] Wherein, one ends of the two third return springs away from the sliding block are respectively fixedly connected to the upper and lower inner walls inside the sliding groove, and a fixed block is fixedly connected to one end of the sliding block located outside the sliding groove;

[0008] Wherein, a concave fixing plate is arranged on the rear surface of the fixed block, and the concave fixing plate is fixedly connected to the rear surface of the fixed block.

[0009] Preferably, screws are rotatably connected to both the upper and lower surfaces of the concave fixing plate, and the two screws are arranged corresponding to each other up and down;

[0010] Among them, screws are rotatably connected to both the upper and lower surfaces of the two concave fixing plates, the two screws are arranged corresponding to each other up and down, and rotating discs are fixedly connected to the opposite surfaces of the two screws;

[0011] Among them, the relative ends of the two screws are threadedly penetrated into the concave part of the concave fixing plate.

[0012] Preferably, two fourth return springs arranged corresponding to each other front and back are fixedly connected to both the upper and lower sides of the concave part of the concave fixing plate;

[0013] Among them, the ends of the two fourth return springs arranged corresponding to each other front and back, which are far away from the concave fixing plate, are fixedly connected with arc-shaped concave connecting plates, and the two arc-shaped concave connecting plates are arranged corresponding to each other up and down.

[0014] Preferably, two second springs arranged corresponding to each other front and back are fixedly connected to the opposite surfaces of the two arc-shaped concave connecting plates, and rubber gaskets are fixedly connected to the ends of the two second springs arranged corresponding to each other front and back, which are far away from the arc-shaped concave connecting plates.

[0015] Preferably, a valve stem is slidably connected inside the recirculation valve body, a linkage is slidably sleeved on the outer wall of the valve stem, the fixed pin penetrates through the inner wall of the linkage at the outer end of the guide groove and slides out of the rear surface of the linkage, and a first return spring is movably sleeved on the outer wall of the linkage.

[0016] Preferably, a bearing is fixedly connected to the upper inner wall inside the linkage, and the outer wall of the outer end of the fixed pin located in the guide groove is fixedly sleeved in the inner wall of the bearing;

[0017] Among them, a guide ring is fixedly sleeved at the inner end of the fixed pin located inside the valve body guide groove, and the upper and lower surfaces of the guide ring are in contact with the opposite surfaces of the two arc-shaped concave connecting plates.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: In the guiding and stabilizing assembly of the exhaust gas recirculation valve, two rotating disks rotate two screw rods, and the two screw rods move towards each other. At the same time, two arc-shaped concave connecting plates are pushed to move towards each other, and four fourth return springs are stretched. During the movement of the two arc-shaped concave connecting plates towards each other, the two rubber gaskets gradually come into contact with the upper and lower surfaces of the guiding ring, playing a role in supporting and stabilizing the upper and lower outer walls of the guiding ring, preventing the guiding ring from detaching from the fixed pin during long-term operation, and extending the service life of the guiding ring. In the guiding and stabilizing assembly of the exhaust gas recirculation valve, when the recirculation valve body starts to work, the two arc-shaped concave connecting plates cooperate with the two screw rods to play a role in stabilizing the up and down movement of the fixed pin with the concave fixed plate and the guiding groove. At the same time, the fixed block drives the slider to move slightly inside the sliding groove, and the two third return springs play a buffering role for the vibration generated by the fixed pin, thereby improving the stability of the exhaust gas recirculation valve during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 is a schematic plan sectional structure view of the whole of the present utility model;

[0021] Figure 2 is Figure 1 an enlarged view of part A in

[0022] Reference numerals: 1, recirculation valve body; 2, connecting gear; 3, bearing; 4, fixed pin; 5, linkage member; 6, first return spring; 7, valve stem; 8, screw rod; 9, rotating disk; 10, rubber gasket; 11, guiding ring; 12, arc-shaped concave connecting plate; 13, second spring; 14, concave fixed plate; 15, fixed block; 16, slider; 17, third return spring; 18, sliding groove; 19, guiding groove; 20, fourth return spring; 21, external motor; 22, driving gear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The role of the accompanying drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model. However, it should not be construed as a limitation on the protection scope of the present utility model. In the description of the present utility model, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0024] In the description of the present utility model, "greater than", "less than", "exceeding", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features. In the description of the present utility model, unless otherwise clearly defined, words such as "set", "installed", "connected", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0025] Please refer to Figure 1-2 , the present utility model provides a technical solution: a guiding and stabilizing assembly for an exhaust gas recirculation valve, including a recirculation valve body 1, a connecting gear 2 is arranged on the recirculation valve body 1, an external motor 21 is arranged on the recirculation valve body 1, a driving gear 22 is fixedly connected to the external motor, and the driving gear 22 is engaged with the connecting gear 2;

[0026] Among them, a guiding groove 19 is opened on the upper side of the front inner wall of the recirculation valve body 1, and a fixing pin 4 is slidably inserted into the inner wall of the guiding groove 19;

[0027] Among them, a sliding groove 18 is opened on the front inner wall of the guiding groove 19, a sliding block 16 is slidably connected inside the sliding groove 18, and third return springs 17 are fixedly connected to both the upper and lower surfaces of one end of the sliding block 16 located inside the sliding groove 18;

[0028] Among them, one end of each of the two third return springs 17 away from the sliding block 16 is respectively fixedly connected to the upper and lower inner walls inside the sliding groove 18, and a fixing block 15 is fixedly connected to one end of the sliding block 16 located outside the sliding groove 18;

[0029] Among them, a concave fixing plate 14 is arranged on the rear surface of the fixing block 15, and the concave fixing plate 14 is fixedly connected to the rear surface of the fixing block 15.

[0030] Further, screw rods 8 are rotatably connected to both the upper and lower surfaces of the concave fixing plate 14, and the two screw rods 8 are arranged corresponding to each other vertically;

[0031] Among them, screw rods 8 are rotatably connected to both the upper and lower surfaces of the concave fixing plate 14, the two screw rods 8 are arranged corresponding to each other vertically, and rotating discs 9 are fixedly connected to the opposite surfaces of the two screw rods 8;

[0032] Among them, the opposite ends of the two screw rods 8 are threadedly penetrated into the concave part inside the concave fixing plate 14.

[0033] Further, two fourth return springs 20 arranged corresponding to each other front and back are fixedly connected to both the upper and lower sides of the concave part of the concave fixing plate 14;

[0034] Among them, the ends of the two fourth return springs 20 arranged corresponding to each other front and back, which are far away from the concave fixing plate 14, are fixedly connected with arc-shaped concave connecting plates 12, and the two arc-shaped concave connecting plates 12 are arranged corresponding to each other vertically.

[0035] Further, two second springs 13 arranged corresponding to each other front and back are fixedly connected to the opposite surfaces of the two arc-shaped concave connecting plates 12, and the ends of the two second springs 13 arranged corresponding to each other front and back, which are far away from the arc-shaped concave connecting plates 12, are fixedly connected with rubber gaskets 10.

[0036] Further, a valve rod 7 is slidably connected inside the recirculation valve body 1, a linkage member 5 is slidably sleeved on the outer wall of the valve rod 7, a fixing pin 4 penetrates through the inner wall of the linkage member 5 at the outer end of the guide groove 19 and slides out of the rear surface of the linkage member 5, and a first return spring 6 is movably sleeved on the outer wall of the linkage member 5.

[0037] Further, a bearing 3 is fixedly connected to the upper inner wall inside the linkage member 5, and the outer wall of the fixing pin 4 at the outer end of the guide groove 19 is fixedly sleeved in the inner wall of the bearing 3;

[0038] Among them, a guide ring 11 is fixedly sleeved at the end of the fixing pin 4 inside the valve body guide groove 19, and the upper and lower surfaces of the guide ring 11 are in contact with the opposite surfaces of the two arc-shaped concave connecting plates 12.

[0039] When using this guiding and stabilizing exhaust gas recirculation valve, first, the guiding ring 11 is sleeved on the front end of the fixing pin 4. Then, two screws 8 are rotated by two rotating disks 9. The two screws 8 move towards each other, simultaneously pushing two arc-shaped concave connecting plates 12 to move towards each other and stretching four fourth return springs 20. During the movement of the two arc-shaped concave connecting plates 12 towards each other, the two rubber gaskets 10 gradually come into contact with the upper and lower surfaces of the guiding ring 11, while compressing four second springs 13. After fixation, when the recirculation valve body 1 starts to work, the external motor 21 is started. The external motor 21 is arranged on the recirculation valve body 1. The external motor 21 drives the connecting gear 2 to rotate through the driving gear 22, so that when the proximal end of the cam located on the driven connecting gear 2 (the proximal end refers to the end of the cam closest to the axis of the driven connecting gear 2) abuts against the bearing, the linkage 5 can drive the valve stem 7 to move upward and reset under the action of the first return spring 6. When the external motor 21 drives the connecting gear 2 through the driving gear 22, so that the distal end of the cam located on the connecting gear 2 (the distal end refers to the end of the cam farthest from the axis of the driven gear) abuts against the bearing, the cam can push down the bearing 3 located on the connecting block, so that the connecting block overcomes the elastic force of the first return spring 6 and drives the valve stem 7 to move downward, finally realizing the opening between the valve disc and the valve seat, thereby controlling the exhaust gas flow. The cooperation of the two arc-shaped concave connecting plates 12 and the two screws 8 plays a role in stabilizing and fixing the guiding ring 11, preventing the guiding ring 11 from detaching from the fixing pin 4 during long-term operation, improving the service life of the guiding ring 11. At the same time, the concave fixing plate 14 and the guiding groove 19 play a role in stabilizing the up and down movement of the fixing pin 4, improving the stability of this guiding and stabilizing exhaust gas recirculation valve during use.

[0040] Working principle: When using this guiding and stabilizing exhaust gas recirculation valve, first, the guiding ring 11 is sleeved on the front end of the fixed pin 4. Then, the two screws 8 are rotated by the two rotating disks 9. The two screws 8 move towards each other, and at the same time, they push the two arc-shaped concave connecting plates 12 to move towards each other, and stretch the four fourth return springs 20. During the movement of the two arc-shaped concave connecting plates 12 towards each other, the two rubber gaskets 10 gradually come into contact with the upper and lower surfaces of the guiding ring 11, and at the same time, compress the four second springs 13. After fixation, when the recirculation valve body 1 starts to work, the external motor 21 is started. The external motor 21 is arranged on the recirculation valve body 1. The external motor 21 drives the connecting gear 2 to rotate through the driving gear 22, so that when the proximal end of the cam located on the driven connecting gear 2 (the proximal end refers to the end of the cam closest to the axis of the driven connecting gear 2) abuts against the bearing, the linkage 5 can drive the valve stem 7 to move upward and reset under the action of the first return spring 6. When the external motor 21 drives the connecting gear 2 through the driving gear 22, so that the distal end of the cam located on the connecting gear 2 (the distal end refers to the end of the cam farthest from the axis of the driven gear) abuts against the bearing, the cam can push down the bearing 3 located on the connecting block, so that the connecting block overcomes the elastic force of the first return spring 6 and drives the valve stem 7 to move downward, finally realizing the opening between the valve disc and the valve seat, thereby controlling the exhaust gas flow. The cooperation of the two arc-shaped concave connecting plates 12 and the two screws 8 plays a role in stabilizing and fixing the guiding ring 11, preventing the guiding ring 11 from detaching from the fixed pin 4 during long-term operation, improving the service life of the guiding ring 11, and at the same time, the concave fixed plate 14 and the guiding groove 19 play a role in stabilizing the up and down movement of the fixed pin 4.

[0041] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A guide stabilization assembly for an exhaust gas recirculation valve, characterized in that: include: A recirculation valve body (1), the recirculation valve body (1) being provided with a connecting gear (2), the recirculation valve body (1) being provided with an external motor (21), the external motor being fixedly connected with a driving gear (22), the driving gear (22) being meshed with the connecting gear (2); A guide groove (19) is provided on the upper side of the front inner wall of the recirculation valve body (1), and a fixing pin (4) is slidably inserted into the inner wall of the guide groove (19); A slide groove (18) is provided on the front inner wall of the guide groove (19), a slider (16) is slidably connected inside the slide groove (18), and a third return spring (17) is fixedly connected to the upper and lower surfaces of one end of the slider (16) located inside the slide groove (18); The two third return springs (17) have their ends away from the slider (16) fixedly connected to the upper and lower inner walls of the slide groove (18), respectively, and the slider (16) has its end located outside the slide groove (18) fixedly connected to a fixed block (15); Wherein, a concave fixing plate (14) is provided on the rear surface of the fixing block (15), and the concave fixing plate (14) is fixedly connected to the rear surface of the fixing block (15).

2. The guide stabilization assembly of an exhaust gas recirculation valve according to claim 1, characterized in that: The upper and lower surfaces of the concave fixing plate (14) are both rotatably connected to screw rods (8), and the two screw rods (8) are arranged correspondingly in the upper and lower parts; The upper and lower surfaces of the two concave fixing plates (14) are both rotatably connected to screw rods (8), the two screw rods (8) are arranged correspondingly up and down, and the opposite surfaces of the two screw rods (8) are both fixedly connected to rotating disks (9); The opposite ends of the two screw rods (8) are threadedly penetrated into the concave part of the concave fixing plate (14).

3. The guide stabilization assembly of an exhaust gas recirculation valve according to claim 1, characterized in that: Two fourth return springs (20) arranged in a front-to-rear manner are fixedly connected to the upper and lower sides of the concave portion of the concave fixing plate (14); Two fourth return springs (20) arranged in a front-to-rear manner have one end away from the concave fixing plate (14) fixedly connected to an arc-shaped concave connecting plate (12), and the two arc-shaped concave connecting plates (12) are arranged in a top-to-bottom manner.

4. The guide stabilization assembly of an exhaust gas recirculation valve according to claim 3, characterized in that: Two second springs (13) arranged in front and back correspondence are fixedly connected to the opposite surfaces of the two arc-shaped concave connecting plates (12), and a rubber gasket (10) is fixedly connected to one end of the two second springs (13) arranged in front and back correspondence away from the arc-shaped concave connecting plates (12).

5. The guide stabilization assembly of an exhaust gas recirculation valve according to claim 1, characterized in that: The recirculation valve body (1) is slidably connected to a valve stem (7) inside, and a linking member (5) is slidably sleeved on the outer wall of the valve stem (7). One end of the fixing pin (4) located outside the guide groove (19) slides into the inner wall of the linking member (5) and slides out of the rear surface of the linking member (5). The outer wall of the linking member (5) is movably sleeved with a first return spring (6).

6. The guide stabilization assembly of an exhaust gas recirculation valve according to claim 5, characterized in that: The upper inner wall of the linkage member (5) is fixedly connected to a bearing (3), and the outer wall of the fixing pin (4) located at one end outside the guide groove (19) is fixedly sleeved in the inner wall of the bearing (3); One end of the fixing pin (4) located inside the valve body guide groove (19) is fixedly sleeved with a guide ring (11), and the upper and lower surfaces of the guide ring (11) are in contact with the opposite surfaces of the two arc-shaped concave connecting plates (12).

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