Integrated testing equipment for airtight marking and foolproof design of diesel engine exhaust gas recovery regulating valve

Abstract

This utility model relates to an integrated testing device for the airtightness, marking, and error prevention of diesel engine exhaust gas recovery regulating valves. It includes a mounting base, on the front side of which is fixed an airtightness testing seat for placing the regulating valve. The airtightness testing seat has an inflation hole communicating with an external inflation pipe. Several clamping cylinders are arranged on the back side of the mounting base, with the telescopic ends of these cylinders penetrating the mounting base and hinged to clamping blocks for securing the regulating valve to the airtightness testing seat. A threaded hole detection device is arranged on the rear side of the mounting base, and the mounting base has through holes extending from the front and rear for the threaded hole detection device to extend and detect the regulating valve. A pneumatic marking machine for marking is fixed on the mounting base. This integrated testing device for the airtightness, marking, and error prevention of regulating valves has a simple structure, is easy to operate, reduces the labor intensity of operators, reduces inspection costs, and can complete airtightness, marking, and thread detection in a single clamping operation.

Description

Technical Field

[0001] This utility model relates to an integrated testing device for the airtightness of a diesel engine exhaust gas recovery regulating valve, featuring engraving and error-proof design. Background Technology

[0002] After processing, waste gas recovery regulating valves require multiple tests and marking / engraving processes. Typically, airtightness testing and pneumatic marking are performed separately. To prevent missed threads, operators tighten bolts and then remove them for final inspection, preventing unfinished tapping. This process involves two loading and unloading operations, bolt tightening, and bolt removal for final inspection, resulting in numerous steps and unnecessary waste. Therefore, this research aims to address these issues by developing a novel, convenient, integrated airtightness, marking, and error-proof testing device for waste gas recovery regulating valves. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide an integrated testing device for the airtightness marking and error prevention of diesel engine exhaust gas recovery regulating valve, which is not only reasonable in structure, but also convenient and fast.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: an integrated detection device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve, including a mounting base. An airtightness detection seat for placing the regulating valve is fixed on the front side of the mounting base. An inflation hole communicating with an external inflation pipe is opened on the airtightness detection seat. Several clamping cylinders are arranged on the back side of the mounting base. The telescopic end of each clamping cylinder passes through the mounting base and is hinged to a clamping block for clamping the regulating valve onto the airtightness detection seat. A threaded hole detection device is arranged on the rear side of the mounting base. A through hole is opened on the mounting base to allow the threaded hole detection device to extend and detect the regulating valve. A pneumatic marking machine for marking is fixed on the mounting base.

[0005] Furthermore, a U-shaped hinge seat is hinged between the clamping end of the clamping block and the hinged end of the clamping cylinder, and the hinge seat is fixedly connected to the mounting base.

[0006] Furthermore, a sealing assembly is provided at the valve port of the exhaust valve. The sealing assembly includes a plug. The end of the plug near the valve port has a coaxial annular groove to facilitate insertion into the valve port of the exhaust valve. The side of the plug away from the valve port is connected to a swing arm via a connecting rod. One end of the connecting rod is inserted into the sliding cavity inside the plug and slidably connected thereto. The other end of the connecting rod is connected to the swing arm. A spring is sleeved on the connecting rod. The two ends of the spring are respectively abutted against the plug and the swing arm. The other end of the swing arm is driven to rotate by a servo motor, which is fixed to the mounting base.

[0007] Furthermore, the end of the connecting rod is fixed with a pendant inside the sliding cavity to prevent it from falling out, and the sliding cavity has sufficient space for the pendant to slide back and forth.

[0008] Furthermore, the plug in the annular groove is inserted into the valve port of the exhaust valve, and a rubber gasket is coaxially sleeved in the annular groove.

[0009] Furthermore, the mounting base is fixed with a quick clamp for attaching the exhaust valve to the airtightness testing seat.

[0010] Furthermore, the bottom of the mounting base is fixed to the base plate, and the threaded hole detection device is fixed to the base plate.

[0011] Compared with the prior art, the present invention has the following advantages: The present invention has a simple structure and is easy to operate, which reduces the labor intensity of operators, reduces inspection costs, and is an integrated testing device that can complete air tightness, engraving and thread testing in one clamping, effectively preventing the previous process from being missed and reducing the risk of customer complaints.

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 This is a front view of the embodiment of the present invention after removing the threaded hole detection device; Figure 3 This is a top view of the embodiment of the present invention after removing the threaded hole detection device; Figure 4 This is a front view of the airtightness testing seat in an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the sealing component in an embodiment of the present utility model; Figure 6 This is a cross-sectional schematic diagram of the sealing component in an embodiment of this utility model; Figure 7 This is a schematic diagram of the regulating valve structure in an embodiment of this utility model.

[0014] In the diagram: 1-Mounting base, 2-Regulating valve, 3-Air tightness test seat, 4-Inflation pipe, 5-Inflation hole, 6-Clamping cylinder, 7-Clamping block, 8-Threaded hole detection device, 9-Through hole, 10-Pneumatic marking machine, 11-Hinge seat, 12-Valve port, 13-Sealing assembly, 14-Plug, 15-Annular groove, 16-Connecting rod, 17-Swing arm, 18-Sliding cavity, 19-Servo motor, 20-Dropping head, 21-Rubber pad, 22-Quick clamp, 23-Base plate, 24-Concave cavity, 25-Spring. Detailed Implementation

[0015] To make the above-mentioned features and advantages of this utility model more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0016] like Figures 1-7 As shown, the integrated airtightness marking and foolproof testing device for diesel engine exhaust gas recovery regulating valve includes an L-shaped mounting base 1. An airtightness testing seat 3 for placing the regulating valve 2 is fixed to the front side of the mounting base. The airtightness testing seat has an inflation hole 5 that communicates with an external inflation pipe 4. This inflation hole extends from front to back into the airtightness testing seat and then exits from the side of the airtightness testing seat to communicate with the inflation pipe. The airtightness inflation device connected to the external inflation pipe is a standard feature and will not be described in detail here. The mounting base has three sets of clamping cylinders 6 spaced apart on its back side. The telescopic ends of the clamping cylinders all extend forward through the mounting base and are hinged to clamping blocks 7 for clamping the air regulating valve to the airtightness testing seat. The mounting base has a thread hole detection device 8 on its rear side. The mounting base has through holes 9 for the thread hole detection device to extend and detect the regulating valve. The mounting base is fixed with a pneumatic marking machine 10 for engraving. The pneumatic marking machine is set at an angle and is a general marking and engraving device.

[0017] In this embodiment of the utility model, the regulating valve is provided with a valve port on the front side and a concave cavity 24 as a pressure holding cavity on the other side, which communicates with the valve port.

[0018] In this embodiment of the utility model, the threaded hole detection device generally includes a threaded inspection gauge, a telescopic plate, a rotating shaft, a rotating drive mechanism, and other structures. Similar disclosures have been made in published documents such as [CN] Precision Threaded Hole Detection Device and Detection Method - CN117606326A, which will not be elaborated on here. This utility model uses a 7.5KW servo motor + 80 spindle power head.

[0019] In this embodiment of the utility model, a U-shaped hinge seat 11 is hinged between the clamping end of the clamping block and the hinged end of the clamping cylinder. The hinge seat is fixed to the mounting base. The cylinder extends and drives the clamping block to swing around the hinge point, thereby causing the clamping end of the clamping block to be pressed against the regulating valve for fastening.

[0020] In this embodiment of the utility model, a sealing assembly 13 is provided at the valve port 12 of the exhaust valve. The sealing assembly includes a plug 14. The end of the plug near the valve port is coaxially provided with an annular groove 15 to facilitate insertion into the valve port of the exhaust valve. The side of the plug away from the valve port is connected to a swing arm 17 via a connecting rod 16. One end of the connecting rod is inserted into the sliding cavity 18 built into the plug and slidably connected thereto. The other end of the connecting rod is connected to the swing arm. A spring 25 is sleeved on the connecting rod. The two ends of the spring are respectively abutted against the plug and the swing arm. The other end of the swing arm is driven to rotate by a servo motor 19, which is fixedly connected to the mounting base.

[0021] In this embodiment of the utility model, the end of the connecting rod is fixedly provided with a drop head 20 to prevent it from falling out in the sliding cavity, and the sliding cavity has enough space for the drop head to slide back and forth.

[0022] In this embodiment of the utility model, the plug in the annular groove is inserted into the valve port of the exhaust valve, and a rubber pad 21 is coaxially sleeved in the annular groove.

[0023] In this embodiment of the utility model, a quick clip 22 for attaching the exhaust valve to the airtightness testing seat is fixed on the mounting base.

[0024] In this embodiment of the utility model, the bottom of the mounting base is fixed on the base plate 23, and the threaded hole detection device is fixed on the base plate.

[0025] The working principle of this utility model embodiment is as follows: First, the airtightness testing platform is purged to remove iron filings or debris from the reference surface. Then, the servo motor rotates the swing arm and the plug into position, and the regulating valve is placed simultaneously. By pressing the plug, the spring is compressed, and the plug is released at the valve port of the regulating valve. The plug completes the sealing process of the valve port under the tension of the spring. At the same time, the quick clamp completes the positioning and pre-tightening of the regulating valve. Then, the clamping cylinder extends to make the clamping block complete the clamping of the regulating valve. At this time, the airtightness test can be performed. The air in the air inlet is filled into the air inlet to complete the airtightness test of the regulating valve cavity. After the test is qualified, the pneumatic marking machine is started to engrave the characters (if the airtightness test is not good, the workpiece is isolated and scrapped). After engraving, the thread hole test is performed. The position of the thread hole to be tested on the regulating valve is aligned with the through hole, so the thread hole testing device can be moved forward to perform the test. The test is convenient, the overall design is ingenious, the operation is convenient, the labor intensity of the operator is reduced, and the inspection cost is reduced.

[0026] This utility model is not limited to the above-described preferred embodiment. Anyone can derive other various forms of integrated testing equipment for the airtightness marking and foolproof design of diesel engine exhaust gas recovery regulating valves based on the teachings of this utility model. All equivalent variations and modifications made within the scope of the claims of this utility model shall fall within the scope of this utility model.

Claims

1. An integrated testing device for the airtightness of diesel engine exhaust gas recovery regulating valve, characterized by: The device includes a mounting base, on the front side of which is fixed an airtightness testing seat for placing a regulating valve. The airtightness testing seat has an inflation hole that communicates with an external inflation pipe. The back side of the mounting base is provided with several clamping cylinders, the telescopic ends of which pass through the mounting base and are hinged to clamping blocks for clamping the regulating valve to the airtightness testing seat. The rear side of the mounting base is provided with a threaded hole detection device, and the mounting base has through holes at the front and rear for the threaded hole detection device to extend and detect the regulating valve. A pneumatic marking machine for engraving is fixed on the mounting base.

2. The integrated testing device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve according to claim 1, characterized in that: A U-shaped hinge seat is hinged between the clamping end of the clamping block and the hinged end of the clamping cylinder, and the hinge seat is fixed to the mounting base.

3. The integrated testing device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve according to claim 1, characterized in that: A sealing assembly is provided at the valve port of the waste gas recovery regulating valve. The sealing assembly includes a plug. The end of the plug near the valve port has a coaxial annular groove to facilitate insertion into the valve port of the waste gas recovery regulating valve. The side of the plug away from the valve port is connected to a swing arm via a connecting rod. One end of the connecting rod is inserted into the sliding cavity inside the plug and slidably connected to it. The other end of the connecting rod is connected to the swing arm. A spring is sleeved on the connecting rod. The two ends of the spring are respectively abutted against the plug and the swing arm. The other end of the swing arm is driven to rotate by a servo motor, which is fixed to the mounting base.

4. The integrated testing device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve according to claim 3, characterized in that: The end of the connecting rod is fixed with a drop head inside the sliding cavity to prevent it from falling out.

5. The integrated testing device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve according to claim 3, characterized in that: The plug in the annular groove is inserted into the valve port of the waste gas recovery regulating valve, and a rubber gasket is coaxially sleeved in the annular groove.

6. The integrated testing device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve according to claim 1, characterized in that: The mounting base is fixed with a quick clamp for attaching the exhaust gas recovery regulating valve to the airtightness testing seat.

7. The integrated testing device for airtight marking and error prevention of diesel engine exhaust gas recovery regulating valve according to claim 1, characterized in that: The mounting base is fixed to the bottom of the base plate, and the threaded hole detection device is fixed to the base plate.

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