CN215566301U - EGR valve leakage detection device - Google Patents
EGR valve leakage detection device Download PDFInfo
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- CN215566301U CN215566301U CN202122221167.9U CN202122221167U CN215566301U CN 215566301 U CN215566301 U CN 215566301U CN 202122221167 U CN202122221167 U CN 202122221167U CN 215566301 U CN215566301 U CN 215566301U
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Abstract
The utility model discloses an EGR valve leakage detection device, which relates to the technical field of detection devices and comprises a base plate, a seat support, a pressure head, a sealing head, a driving mechanism and a transmission mechanism, wherein the base plate is provided with a leakage detector, the seat support is fixedly arranged on the base plate, a detection chamber with an open top is arranged in the seat support, the detection chamber is communicated with the leakage detector through a channel arranged on the side wall of the detection chamber, the pressure head is movably arranged along the vertical direction, the tail end of the movement stroke of the pressure head is provided with a pressing station for pressing the EGR valve on the seat support, the sealing head is movably arranged along the horizontal direction, the tail end of the movement stroke of the sealing head is provided with a sealing station for sealing a side flange on a guide sleeve of the EGR valve, the driving mechanism is used for driving the sealing head to move, and the transmission mechanism is driven by the driving mechanism to drive the movement of the pressure head. The utility model can respectively drive the driving head and the sealing head to move orderly through the matching of the driving mechanism and the transmission mechanism, thereby saving the detection cost and facilitating the operation.
Description
Technical Field
The utility model relates to the technical field of detection devices, in particular to an EGR valve leakage detection device.
Background
The EGR valve (exhaust gas recirculation valve) is a mechanical and electrical integration product which is arranged on a diesel engine and used for controlling the exhaust gas recirculation quantity fed back to an air inlet system, and the EGR valve guides exhaust gas discharged by combustion of the engine to an air inlet manifold to participate in combustion so as to reduce the temperature of a combustion chamber, improve the working efficiency of the engine, improve the combustion environment, reduce the burden of the engine, effectively reduce the emission of NO compounds, reduce knocking and prolong the service life of each component.
The EGR valve product requires leak detection during production to remove off-spec product. For example, the patent with publication number CN202350987U, granted as published as 20120725, and named as "negative pressure EGR valve leakage detection tool", includes a base with more than two mounting holes, and is characterized in that an L-shaped bracket is fixedly connected to the base, a longitudinal cylinder and a transverse cylinder are mounted on the L-shaped bracket, a pressure head is arranged on a piston rod of the longitudinal cylinder, a sealing head is arranged on a piston rod of the transverse cylinder, a positioning blind hole and a baffle are further arranged on the base below the longitudinal cylinder, and a detection hole communicated with the blind hole is arranged on a side wall of the base. It can accomplish twice detection processes to improve detection efficiency, can practice thrift the human cost.
In the prior art, when the leakage of the EGR valve is detected, the leakage parameters of a valve seat and a guide sleeve of the EGR valve need to be detected, the existing detection tool is generally divided into two parts, and two detection procedures are needed; or a tool in the above patent, but two separate driving mechanisms (a longitudinal cylinder and a transverse cylinder) are needed, which is relatively complicated and costly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an EGR valve leakage detection device to solve the defects in the prior art.
In order to achieve the above purpose, the utility model provides the following technical scheme: the utility model provides a EGR valve leak testing device, includes bottom plate, seat support, pressure head, sealed head, actuating mechanism and drive mechanism, wherein, be provided with leak detection appearance on the bottom plate, the seat support fixed set up in on the bottom plate, be provided with the open detection cavity in top in the seat support, detect the cavity through seting up passageway and leak detection appearance intercommunication on its lateral wall, the pressure head is arranged along vertical direction activity, and the end of its motion stroke has one and presses the EGR valve on the position of pressing down on the seat support, sealed head is arranged along the horizontal direction activity, and the end of its motion stroke has the closed station of a side flange on the uide bushing that seals the EGR valve, actuating mechanism is used for the drive sealed head motion, drive mechanism accepts the actuating mechanism drive, in order to drive the pressure head motion.
Further, a sealing ring is arranged at an opening of the detection chamber.
Furthermore, a conical sealing ring is arranged on the periphery of the sealing head.
Further, the driving mechanism is an air cylinder, a hydraulic rod or an electric push rod.
Further, drive mechanism includes gear, first rack, second rack and elastic unit, wherein, gear revolve connects on the bottom plate, first rack through first connecting rod with sealing head fixed connection, and with the gear engagement cooperation, the vertical slip of second rack set up in on the bottom plate, and with gear engagement, the second rack through the second connecting rod with pressure head fixed connection, the vertical downward action of elastic unit elasticity is in on the pressure head.
Further, the elastic unit is a spring.
Further, the width of the gear is not less than the sum of the widths of the first rack and the second rack.
Furthermore, a vertical rod is fixedly connected to the bottom plate, a vertical sliding groove is formed in the vertical rod, and the second rack is arranged in the sliding groove in a sliding mode.
Furthermore, a through hole for avoiding the second rack is formed in the bottom plate.
Further, the first rack or the first connecting rod is connected with the bottom plate in a sliding mode, and the sliding direction is the same as the moving direction of the sealing head.
Compared with the prior art, the EGR valve leakage detection device provided by the utility model has the advantages that the driving mechanism is matched with the transmission mechanism, the driving head and the sealing head can be respectively driven to move orderly, the EGR valve is decompressed and tightly fixed on the seat support, the side flange of the EGR valve is sealed, and the leakage detection is carried out through the leakage detector. The pressure head and the sealing head of the utility model share the same driving mechanism, thus saving the detection cost and facilitating the operation.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIGS. 1-3 are schematic views of the overall structure of the device without detection according to the embodiment of the present invention;
4-6 are schematic diagrams of the overall structure of the ram provided by the embodiment of the utility model when the ram reaches the pressing station;
fig. 7-9 are schematic diagrams illustrating the overall structure of the sealing head in the sealing station according to the embodiment of the present invention.
Description of reference numerals:
1. a base plate; 1.1, a through hole; 2. a leak detector; 3. a seat support; 3.1, a detection chamber; 4. a pressure head; 5. a sealing head; 6. a drive mechanism; 7. a transmission mechanism; 7.1, a gear; 7.2, a first rack; 7.3, a first connecting rod; 7.4, a second rack; 7.5, a second connecting rod; 7.6, an elastic unit; 7.7, erecting a rod; 8. a seal ring; 9. and a conical surface sealing ring.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1-9, an EGR valve leakage detection apparatus according to an embodiment of the present invention includes a base plate 1, a seat 3, a pressing head 4, a sealing head 5, a driving mechanism 6, and a transmission mechanism 7, wherein, a leakage detector 2 is arranged on the bottom plate 1, a seat support 3 is fixedly arranged on the bottom plate 1, a detection chamber 3.1 with an open top is arranged in the seat support 3, the detection chamber 3.1 is communicated with the leakage detector 2 through a channel arranged on the side wall of the detection chamber, a pressure head 4 is movably arranged along the vertical direction, the end of the movement stroke is provided with a pressing station for pressing the EGR valve on the seat support 3, the sealing head 5 is movably arranged along the horizontal direction, the end of the movement stroke is provided with a closing station for closing a side flange on a guide sleeve of the EGR valve, the driving mechanism 6 is used for driving the sealing head 5 to move, and the transmission mechanism 7 is driven by the driving mechanism 6 to drive the driving head 4 to move.
Compared with the prior art, the EGR valve leakage detection device provided by the utility model can be used for respectively driving the pressure head 4 and the sealing head 5 to move orderly through the matching between the driving mechanism 6 and the transmission mechanism 7, so that the EGR valve is decompressed and tightly pressed on the seat support 3, the side flange of the EGR valve is sealed, and the detection is carried out through the leakage detector 2. The pressure head 4 and the sealing head 5 of the utility model share the same driving mechanism 6 in movement, thus saving the detection cost and facilitating the operation.
As the preferred technical scheme of this embodiment, the uncovered department of detecting cavity 3.1 is provided with sealing washer 8, and pressure head 4 is when moving to pressing the station, presses the EGR valve to seat support 3 on, makes the valve seat mouth of EGR valve and the uncovered butt joint of detecting cavity 3.1 close, and the EGR inner chamber communicates with detecting cavity 3.1, and sealing washer 8 can increase the disk seat of EGR valve and survey the leakproofness when the cavity is mated.
As a preferable technical solution of this embodiment, a conical surface sealing ring 9 is sleeved on the circumferential side of the sealing head 5, and when the sealing head 5 moves to the closing station, the sealing head 5 closes the side flange opening on the guide sleeve of the EGR valve, and the conical surface sealing ring 9 can increase the sealing performance between the sealing head 5 and the side flange on the guide sleeve of the EGR valve.
As a preferred technical solution of this embodiment, the driving mechanism 6 is an air cylinder, a hydraulic rod or an electric push rod, and the open end of the piston rod of the air cylinder, the hydraulic rod of the hydraulic cylinder or the electric push rod is fixedly connected with the sealing head 5.
As a preferred technical solution of the present embodiment, the transmission mechanism 7 includes a gear 7.1, a first rack 7.2, a second rack 7.4, and an elastic unit 7.6, wherein the gear 7.1 is rotatably connected to the bottom plate 1, and the first rack 7.2 is fixedly connected to the sealing head 5 through a first connecting rod 7.3 and is engaged with the gear 7.1. Preferably, the first rack 7.2 or the first connecting rod 7.3 is slidably connected to the bottom plate 1, and the sliding direction is the same as the moving direction of the sealing head 5, so that the smoothness of the movement of the first rack 7.2 can be improved. The second rack 7.4 is vertically arranged on the bottom plate 1 in a sliding manner, specifically, a vertical rod 7.7 is fixedly connected to the bottom plate 1, a vertical sliding groove is formed in the vertical rod 7.7, and the second rack 7.4 is connected in the sliding groove in a sliding manner. Second rack 7.4 and gear 7.1 meshing, second rack 7.4 is through second connecting rod 7.5 and pressure head 4 fixed connection, set up the through-hole 1.1 of dodging second rack 7.4 on the bottom plate 1, the vertical downward action of elastic element 7.6 elasticity is on pressure head 4, elastic element 7.6 is preferred to be the spring, the one end and the second connecting rod 7.5 of spring are connected, the other end is connected with pole setting 7.7 or bottom plate 1, the length direction of spring is unanimous with pressure head 4's direction of motion, also be vertical direction. Further, the width of the gear 7.1 is not less than the sum of the widths of the first rack 7.2 and the second rack 7.4, so that the first rack 7.2 and the second rack 7.4 are meshed and matched with the gear 7.1 in a side-by-side mode in the axial direction of the gear 7.1.
The working principle is as follows: when the EGR valve is used, the pressure head 4 and the sealing head 5 are both located at the position which is farthest away from the seat support 3 on the respective movement stroke, at the moment, the elastic unit generates elastic deformation (as shown in figure 1-3), the EGR valve is placed on the seat support 3, the valve seat of the EGR valve is ensured to be oppositely closed with the opening of the detection chamber 3.1, the side flange of the EGR valve is aligned with the sealing head 5 (the seat support 3 is provided with a notch matched with the lower part of the side flange of the EGR valve), the driving mechanism 6 is started, the driving mechanism 6 drives the sealing head 5 to move towards the side flange of the EGR valve, meanwhile, the driving mechanism 6 also drives the first rack 7.2 to synchronously move (at the same speed and in the same direction) through the first connecting rod 7.3, the first rack 7.2 drives the gear 7.1 to rotate, the gear 7.1 drives the second rack 7.4 to vertically move downwards, the second rack 7.4 drives the pressure head 4 to move downwards to the pressing station through the second connecting rod 7.5, and the pressure head 4 is contacted with the top of the EGR valve, the EGR valve is pressed on the seat support 3, the pressure head 4 presses the EGR valve downwards to enable the valve seat of the EGR valve to be closely matched with the detection chamber 3.1, at the moment, the first rack 7.2 and the gear 7.1 are in a meshed critical position, the elastic deformation quantity of the elastic unit 7.6 is reduced, but the elastic unit is still in a deformation state, the elastic force acts downwards on the pressure head 4, and at the moment, the valve seat of the EGR valve can be detected through the leakage detector 2 (as shown in figures 4-6); then, the sealing head 5 is driven by the driving mechanism 6 to move continuously to the side flange direction of the EGR valve to the closing station, but initially in the process, the first rack 7.2 is no longer meshed and matched with the gear 7.1, so that the first rack 7.2 no longer drives the gear 7.1 in the process, the second rack 7.4 and the pressure head 4 are not moved, the pressure head 4 is kept at the pressing station by the elastic force of the elastic unit 7.6, and after the sealing head 5 reaches the closing station, leakage detection can be carried out on the guide sleeve of the EGR valve (see fig. 7-9). After the detection, make actuating mechanism 6 back drive, drive sealed head 5 and move and keep away from the EGR valve, first rack 7.2 follows sealed head 5 and moves, return to the critical position with gear 7.1 meshing when first rack 7.2, keep away from the EGR valve along with sealed head 5 continues the motion, first rack 7.2 and gear 7.1 mesh are gone up, it rotates to drive gear 7.1, gear 7.1 drives the vertical upward movement of second rack 7.4, second rack 7.4 drives pressure head 4 upward movement, make pressure head 4 break away from the EGR valve, elastic unit 7.6 also can further be deformed, take off the EGR valve on the base 3 this moment can.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the utility model.
Claims (10)
1. The utility model provides a EGR valve leak detection device, includes bottom plate (1), be provided with leak detection appearance (2) on bottom plate (1), its characterized in that still includes:
the base support (3) is fixedly arranged on the bottom plate (1), a detection chamber (3.1) with an open top is arranged in the base support (3), and the detection chamber (3.1) is communicated with the leakage detector (2) through a channel arranged on the side wall of the detection chamber;
the pressure head (4) is movably arranged along the vertical direction, and the tail end of the movement stroke of the pressure head is provided with a pressing station for pressing the EGR valve on the seat support (3);
the sealing head (5) is movably arranged along the horizontal direction, and the tail end of the movement stroke of the sealing head is provided with a sealing station for sealing a side flange on a guide sleeve of the EGR valve;
a driving mechanism (6) for driving the sealing head (5) to move;
and the transmission mechanism (7) is driven by the driving mechanism (6) to drive the pressure head (4) to move.
2. An EGR valve leakage detection device according to claim 1, characterized in that the opening of the detection chamber (3.1) is provided with a sealing ring (8).
3. The EGR valve leakage detection apparatus according to claim 1, wherein a tapered sealing ring (9) is provided on a peripheral side of the sealing head (5).
4. The EGR valve leakage detecting apparatus according to claim 1, wherein the driving mechanism (6) is a cylinder, a hydraulic rod, or an electric push rod.
5. The EGR valve leakage detecting apparatus according to claim 1, wherein the transmission mechanism (7) includes:
a gear (7.1) which is rotationally connected to the base plate (1);
the first rack (7.2) is fixedly connected with the sealing head (5) through a first connecting rod (7.3) and is meshed with the gear (7.1);
the second rack (7.4) is vertically and slidably arranged on the bottom plate (1) and is meshed with the gear (7.1), and the second rack (7.4) is fixedly connected with the pressure head (4) through a second connecting rod (7.5);
and the elastic unit (7.6) vertically acts on the pressure head (4) downwards through elasticity.
6. An EGR valve leak detection apparatus according to claim 5, characterized in that the elastic means (7.6) is a spring.
7. An EGR valve leak detection apparatus according to claim 5, characterized in that the width of the gear (7.1) is not less than the sum of the widths of the first rack (7.2) and the second rack (7.4).
8. The EGR valve leakage detection device according to claim 5, characterized in that a vertical rod (7.7) is fixedly connected to the base plate (1), a vertical sliding groove is formed in the vertical rod (7.7), and the second rack (7.4) is slidably disposed in the sliding groove.
9. The EGR valve leakage detection device according to claim 5, characterized in that the base plate (1) is provided with a through hole (1.1) avoiding the second rack (7.4).
10. An EGR valve leakage detection device according to claim 5, characterized in that the first rack (7.2) or the first connecting rod (7.3) is slidably connected with the base plate (1) in the same direction as the movement direction of the sealing head (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122221167.9U CN215566301U (en) | 2021-09-14 | 2021-09-14 | EGR valve leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122221167.9U CN215566301U (en) | 2021-09-14 | 2021-09-14 | EGR valve leakage detection device |
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| Publication Number | Publication Date |
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| CN215566301U true CN215566301U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122221167.9U Active CN215566301U (en) | 2021-09-14 | 2021-09-14 | EGR valve leakage detection device |
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| CN (1) | CN215566301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962106A (en) * | 2022-05-25 | 2022-08-30 | 安徽腾达汽车科技有限公司 | Valve mechanism and oil pump |
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2021
- 2021-09-14 CN CN202122221167.9U patent/CN215566301U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962106A (en) * | 2022-05-25 | 2022-08-30 | 安徽腾达汽车科技有限公司 | Valve mechanism and oil pump |
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