A device for testing the air tightness of an electronic water pump

Abstract

The present invention discloses a device for testing the air tightness of an electronic water pump in the field of air tightness detection technology, comprising an outer frame; a support plate slidably connected to the outer frame in the horizontal direction, and provided with a positioning member capable of horizontally positioning the test water pump on the support plate; a vertical telescopic cylinder fixedly connected to the support plate; a vertical ballast column fixedly connected to the vertical telescopic cylinder and capable of pressing and sealing the liquid outlet of the test water pump to the support plate; a horizontal telescopic cylinder fixedly connected to the outer frame; a horizontal ballast block fixedly connected to the horizontal telescopic cylinder and capable of pressing the test water pump in the horizontal direction; and an O-ring provided on the horizontal ballast block and capable of sealing the horizontal ballast block to the test water pump. The device of the present invention not only facilitates fixing the electronic water pump, but also ensures that the forces on the electronic water pump are balanced and uniform in the horizontal and vertical directions.

Description

Technical Field

[0001] The present invention relates to the technical field of air tightness detection, and in particular to a device for testing the air tightness of an electronic water pump. Background Art

[0002] As a key component of the engine cooling system, the electronic water pump delivers coolant to various cooling system components, dissipating heat from the engine and heat-generating parts to prevent overheating and failure. Controlled by the ECM, the electronic water pump provides coolant on demand. When the engine is cold, it is idle or operates at a low speed for rapid warm-up. Under heavy engine load, it can operate at high speed to maintain the engine within the optimal temperature range, achieving rapid warm-up and reducing fuel consumption.

[0003] When an electronic water pump is operating, it generates a certain operating pressure (1 bar). This operating pressure ensures that the coolant reaches the engine and heat-generating components, removing heat and dissipating it. At the same time, this operating pressure inevitably places certain demands on the sealing structure of the electronic water pump's fluid cavity. Therefore, during the electronic water pump manufacturing process, the fluid cavity is tested for airtightness at a certain pressure to ensure the sealing reliability of the fluid cavity.

[0004] When conducting an airtight test on an electronic water pump, the liquid inlet and outlet of the electronic water pump need to be sealed. Currently, a cylinder is commonly used to drive the sealing head to move and seal the liquid inlet and outlet. Although this method can achieve the sealing of the liquid inlet and outlet, it still has the following shortcomings in actual production activities:

[0005] 1. The electronic water pump needs to be fixed, but the shape of the electronic water pump is irregular and it is difficult to fix it;

[0006] 2. The cylinder drives the plugging head to move, which will cause uneven or unbalanced force on both sides of the electronic water pump, which may easily cause damage to the electronic water pump. Summary of the Invention

[0007] In view of this, an object of the present invention is to provide a device for testing the air tightness of an electronic water pump, so as to solve the technical problems that the electronic water pump is difficult to fix and is subjected to uneven force.

[0008] The technical solution adopted by the present invention is: a device for testing the air tightness of an electronic water pump, comprising:

[0009] outer frame;

[0010] A carrying plate, the carrying plate is slidably connected to the outer frame in a horizontal direction, and a positioning member is provided on the carrying plate for cooperating with the test water pump and capable of horizontally positioning the test water pump;

[0011] A vertical telescopic cylinder, which is arranged in the vertical direction and has a fixed end fixedly connected to the bearing plate;

[0012] A vertical ballast column, which is fixedly connected to the telescopic end of the vertical telescopic cylinder and can compress and seal the liquid outlet of the test water pump and the bearing plate in the vertical direction;

[0013] A horizontal telescopic cylinder, wherein the horizontal telescopic cylinder is arranged in a horizontal direction and a fixed end of the horizontal telescopic cylinder is fixedly connected to the outer frame;

[0014] A horizontal ballast block, which is fixedly connected to the telescopic end of the horizontal telescopic cylinder, and the horizontal ballast block and the outer frame can compress and fix the test water pump in the horizontal direction;

[0015] An O-type sealing ring is provided on the horizontal ballast block and is capable of sealingly connecting the horizontal ballast block to the liquid inlet of the test water pump;

[0016] Wherein, the horizontal ballast block is provided with an air inlet channel which can be connected with the liquid inlet of the test water pump.

[0017] Preferably, the air inlet passage comprises an axial section and a radial section which are vertically connected, the axial section is perpendicular to and passes through the ballast surface of the horizontal ballast block, and the radial section is arranged parallel to the ballast surface.

[0018] Preferably, an embedding groove is provided on the ballast surface around the axial section, and the O-ring is embedded in the embedding groove.

[0019] Preferably, the outer frame includes a bottom plate, a vertical plate and a top plate, the bottom plate is arranged horizontally, the two vertical plates are vertically fixedly connected to the two ends of the bottom plate in a one-to-one correspondence, and the two ends of the top plate are fixedly connected to the vertical plates.

[0020] Preferably, a horizontal guide rail is provided on the bottom plate, and a slider is fixedly connected to the lower surface of the supporting plate, and the slider is slidably connected to the horizontal guide rail.

[0021] Preferably, gripping portions are provided on opposite sides of the two vertical plates.

[0022] Preferably, a portal mounting frame is vertically fixedly connected to one side of the bearing plate, and a fixed end of the vertical telescopic cylinder is fixedly connected to the portal mounting frame.

[0023] Preferably, the vertical telescopic cylinder and the horizontal telescopic cylinder are both pneumatic cylinders.

[0024] Preferably, the positioning member is a positioning column or a positioning hole, and the number of the positioning members is at least two.

[0025] Preferably, the number of the vertical ballast columns is four.

[0026] Beneficial effects of the present invention:

[0027] The present invention provides a positioning piece on the bearing plate on the inner side of the outer frame, which can be plugged into the mounting hole on the test water pump to realize the horizontal positioning of the test water pump; the horizontal telescopic cylinder is arranged on one side of the bearing plate and is fixedly connected to the outer frame, and the bearing plate is horizontally slidably connected to the outer frame. When the horizontal telescopic cylinder drives the horizontal ballast block to load the liquid inlet of the test water pump, the test water pump can move horizontally synchronously with the bearing plate under the action of external force, and make the other end of the test water pump abut against the outer frame, so that the test water pump is collinear in the horizontal direction and balanced evenly; an O-ring is provided between the horizontal ballast block and the test water pump, and the test water pump can be realized by the pressure deformation of the O-ring. The liquid inlet on the test water pump is sealed, and at the same time, an air inlet channel connected to the liquid inlet of the test water pump is provided on the horizontal ballast block, and the test gas can be transported to the fluid cavity of the test water pump through the air inlet channel to realize the air tightness detection of the fluid cavity of the test water pump; the vertical telescopic cylinder is arranged on one side of the load-bearing plate, and the fixed end of the vertical telescopic cylinder is fixedly connected to the load-bearing plate, so that the vertical telescopic cylinder can move horizontally synchronously with the load-bearing plate, and the telescopic end of the vertical telescopic cylinder is fixedly connected to the vertical ballast column, which can press and fix the liquid outlet of the test water pump on the load-bearing plate through the lifting and lowering of the vertical ballast column and the plug-in cooperation with the vertical ballast column and the mounting hole on the test water pump, thereby realizing the sealing of the liquid outlet on the test water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic structural diagram of a device for testing the air tightness of an electronic water pump according to the present invention from a first perspective;

[0029] Figure 2 A schematic structural diagram of the device for testing the air tightness of an electronic water pump according to the present invention from a second perspective;

[0030] Figure 3 Schematic diagram of the connection between the outer frame, the load-bearing plate and the vertical telescopic cylinder;

[0031] Figure 4 This is a schematic diagram of the connection between the outer frame and the horizontal telescopic cylinder;

[0032] Figure 5 is a structural diagram of the horizontal ballast block;

[0033] Figure 6 A reference diagram showing the first perspective of the device for testing the air tightness of an electronic water pump according to the present invention;

[0034] Figure 7 A reference diagram showing the use of the device for testing the air tightness of an electronic water pump according to the present invention from a second perspective;

[0035] Figure 8 It is a three-dimensional schematic diagram of the electronic water pump.

[0036] Description of reference numerals in the figures:

[0037] 100, external frame;

[0038] 110, bottom plate; 120, vertical plate; 130, top plate; 140, horizontal guide rail; 150, grip;

[0039] 200, load-bearing plate;

[0040] 210, positioning member; 220, slider; 230, door mounting bracket;

[0041] 300, vertical telescopic cylinder;

[0042] 400, vertical ballast column;

[0043] 500, horizontal telescopic cylinder;

[0044] 600, horizontal ballast block;

[0045] 610, air inlet channel; 620, axial section; 630, radial section; 640, ballast surface; 650, embedded groove;

[0046] 700, O-ring;

[0047] 800, test the water pump;

[0048] 810, pump body; 820, liquid inlet; 830, liquid outlet. DETAILED DESCRIPTION

[0049] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention and are not intended to limit the present invention.

[0050] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0052] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0053] Examples, such as Figures 1-8 As shown, a device for testing the air tightness of an electronic water pump comprises:

[0054] Outer frame 100.

[0055] The supporting plate 200 is arranged on the inner side of the outer frame 100 and is connected to the outer frame 100 in a horizontal sliding direction. The supporting plate 200 is provided with a positioning member 210 that cooperates with the test water pump 800 and can horizontally position the test water pump 800.

[0056] The vertical telescopic cylinder 300 is arranged along the vertical direction, and the fixed end (cylinder end) of the vertical telescopic cylinder 300 is fixedly connected to the bearing plate 200 .

[0057] The vertical ballast column 400 is fixedly connected to the telescopic end (piston end) of the vertical telescopic cylinder 300, and the vertical ballast column 400 can compress and seal the liquid outlet 830 of the test water pump 800 and the bearing plate 200 in the vertical direction.

[0058] The horizontal telescopic cylinder 500 is arranged in the horizontal direction, and the fixed end (cylinder end) of the horizontal telescopic cylinder 500 is fixedly connected to the outer frame 100.

[0059] The horizontal ballast block 600 is fixedly connected to the telescopic end (piston end) of the horizontal telescopic cylinder 500 , and the horizontal ballast block 600 and the outer frame 100 can press and fix the test water pump 800 in the horizontal direction.

[0060] The O-ring 700 is disposed on the horizontal ballast block 600 , and the O-ring 700 can seal the connection between the horizontal ballast block 600 and the test water pump 800 .

[0061] The horizontal ballast block 600 is provided with an air inlet channel 610 that can communicate with the liquid inlet 820 of the test water pump 800 .

[0062] The present application provides a positioning member 210 on the supporting plate 200 on the inner side of the outer frame 100, which can be plugged into the mounting hole on the test water pump 800 through the positioning member 210 to achieve horizontal positioning of the test water pump 800; the horizontal telescopic cylinder 500 is arranged on one side of the supporting plate 200 and is fixedly connected to the outer frame 100, and the supporting plate 200 is slidably connected to the outer frame 100 in the horizontal direction. When the horizontal telescopic cylinder 500 drives the horizontal ballast block 600 to ballast the liquid inlet 820 of the test water pump 800, the test water pump 800 can move horizontally synchronously with the supporting plate 200 under the action of external force, so that the other end of the test water pump 800 abuts against the outer frame 100, so that the test water pump 800 can be subjected to collinear, balanced and uniform force in the horizontal direction; an O-ring 700 is provided between the horizontal ballast block 600 and the test water pump 800, which can be deformed by the pressure of the O-ring 700 , realizing the sealing of the liquid inlet 820 on the test water pump 800, and at the same time, an air inlet channel 610 connected with the liquid inlet 820 of the test water pump 800 is provided on the horizontal ballast block 600, and the test gas can be transported to the fluid cavity of the test water pump 800 through the air inlet channel 610 to realize the air tightness test of the test water pump 800; the vertical telescopic cylinder 300 is arranged on one side of the bearing plate 200, and the fixed end of the vertical telescopic cylinder 300 is fixedly connected to the bearing plate 200, so that the vertical telescopic cylinder 300 can move horizontally synchronously with the bearing plate 200, and the telescopic end of the vertical telescopic cylinder 300 is fixedly connected to the vertical ballast column 400, and the liquid outlet 830 of the test water pump 800 can be pressed and fixed on the bearing plate 200 by the lifting and lowering of the vertical ballast column 400 and the plug-in cooperation with the vertical ballast column 400 and the mounting hole on the test water pump 800, thereby realizing the sealing of the liquid outlet 830 on the test water pump 800.

[0063] In a specific embodiment, if Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 As shown, the air inlet channel 610 includes an axial section 620 and a radial section 630 that are vertically connected. A ballast surface 640 corresponding to the liquid inlet 820 of the test water pump 800 is provided on one side of the horizontal ballast block 600. The axial section 620 is vertically formed on the ballast surface 640 on the horizontal ballast block 600, and one end of the axial section 620 passes through the ballast surface 640, and the other end is vertically connected to the radial section 630; the radial section 630 is formed on the horizontal ballast block 600 along the vertical direction or the horizontal direction, and an air pipe joint (not shown in the figure) is installed on the outer end of the radial section 630.

[0064] Preferably, an embedding groove 650 is provided on the ballast surface 640 around the axial section 620 , and the O-ring 700 is embedded in the embedding groove 650 .

[0065] This arrangement is because: by embedding the O-ring 700 in the embedding groove 650 on the ballast surface 640, the O-ring 700 can be coaxial with the liquid inlet 820 of the test water pump 800. When the horizontal ballast block 600 moves horizontally to press the liquid inlet 820 of the test water pump 800, the O-ring 700 will be squeezed and deformed, which can ensure the sealing effect between the test water pump 800 and the horizontal ballast block 600.

[0066] In a specific embodiment, if Figure 1 、 Figure 2 As shown, the outer frame 100 includes a bottom plate 110, a vertical plate 120 and a top plate 130; wherein, the number of the vertical plates 120 is two, and the bottom plate 110 and the top plate 130 are arranged parallel to each other in the horizontal direction, and the two vertical plates 120 are vertically fixedly connected to the two ends of the bottom plate 110 in a one-to-one correspondence, and the two ends of the top plate 130 are fixedly connected to the vertical plates 120, so that the outer frame 100 as a whole is in a U-shape.

[0067] Preferably, gripping portions 150 are provided on opposite sides of the two vertical plates 120 , that is, gripping portions 150 are provided on both horizontal ends of the outer frame 100 , so as to facilitate the movement of the device.

[0068] In a specific embodiment, if Figure 1 、 Figure 2 、 Figure 3 As shown, a horizontal guide rail 140 is provided on the bottom plate 110 of the outer frame 100, and there are two horizontal guide rails 140. The two horizontal guide rails 140 are fixedly installed on the upper surface of the bottom plate 110 in the horizontal direction, and two sliders 220 are fixedly connected to the lower surface of the supporting plate 200. The two sliders 220 are slidably connected with the two horizontal guide rails 140 in a one-to-one correspondence, so that the supporting plate 200 and the outer frame 100 can slide relatively horizontally and approach or move away from the vertical plate 120 of the outer frame 100.

[0069] This arrangement is because: after the supporting plate 200 is horizontally slidably connected to the outer frame 100 through the horizontal guide rail 140 and the slider 220, when the horizontal telescopic cylinder 500 drives the horizontal ballast block 600 to press the liquid inlet 820 of the test water pump 800, the test water pump 800 can slide in the horizontal direction under the action of external force until the other end of the test water pump 800 abuts against the vertical plate 120 of the outer frame 100, so that the horizontal external force acting on the test water pump 800 is collinear, that is, the force on the test water pump 800 is balanced and uniform, so as to ensure the sealing effect of the liquid inlet 820 on the test water pump 800 and the horizontal ballast block 600.

[0070] In a specific embodiment, if Figure 3As shown, a gantry mounting frame 230 is fixedly connected to one side of the bearing plate 200. The gantry mounting frame 230 is arranged in the vertical direction, and the two legs at the bottom end of the gantry mounting frame 230 are fixedly connected to the bearing plate 200. The fixed end of the vertical telescopic cylinder 300 is fixedly connected to the gantry mounting frame 230, so that the vertical telescopic cylinder 300 can drive the vertical ballast column 400 and the bearing plate 200 to move horizontally synchronously, and can drive the vertical ballast column 400 to move vertically and press the test water pump 800.

[0071] In a specific embodiment, the vertical telescopic cylinder 300 and the horizontal telescopic cylinder 500 are both pneumatic cylinders.

[0072] In a specific embodiment, if Figure 1 、 Figure 2 、 Figure 3 As shown, the positioning member 210 is a positioning column or a positioning hole, and there are at least two positioning members 210. Multiple positioning members 210 can position the installation surface of the test water pump 800 in the left and right directions and the front and back directions of the horizontal plane.

[0073] Preferably, the number of the vertical ballast columns 400 is four, and the four vertical ballast columns 400 can form a plug-in fit with the four mounting holes around the liquid outlet 830 on the test water pump 800, and press the liquid outlet 830 of the test water pump 800 to be fixed on the supporting plate 200.

[0074] The use process of the device of the present invention is as follows:

[0075] The liquid inlet 820 of the test water pump 800 is the entrance for the coolant to enter the fluid cavity, and is an annular plane; the liquid outlet 830 of the test water pump 800 is the outlet for the coolant to flow out of the test water pump 800 after obtaining a certain amount of energy in the fluid cavity, and is an annular plane with a sealing ring.

[0076] First, place the test water pump 800 on the bearing plate 200, and insert the mounting column on the test water pump 800 into the positioning hole on the bearing plate 200 to achieve horizontal positioning of the test water pump 800; then control the vertical telescopic cylinder 300 to extend and drive the vertical ballast column 400 to move downward, and the test water pump 800 is pressed and fixed on the bearing plate 200 through the vertical ballast column 400, and the sealing ring of the liquid outlet 830 of the test water pump 800 is deformed, which plays a role in sealing the liquid outlet 830; at the same time, the vertical telescopic cylinder 300, the bearing plate 200 and the test water pump 800 can slide left and right relative to the outer frame 100. Then control the horizontal telescopic cylinder 500 to extend and drive the horizontal ballast block 600 to move horizontally and press the liquid inlet 820 of the test water pump 800. Under the action of the horizontal pressing force, the test water pump 800 and the supporting plate 200 move horizontally away from the horizontal telescopic cylinder 500 until one side of the test water pump 800 abuts against the vertical plate 120 of the outer frame 100, and the test water pump 800 is horizontally supported by the outer frame 100.

[0077] Connect one end of the air supply pipeline to the air pipe joint at one end of the air inlet channel 610, and deliver 2.5 bar compressed air to the fluid cavity of the test water pump 800 through the air supply device. The compressed air reaches the fluid cavity of the test water pump 800 through the air inlet channel 610, and then the leakage of compressed air in the fluid cavity is detected by an air tightness detector.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A device for testing the air tightness of an electronic water pump, characterized in that: include: outer frame (100); a carrying plate (200), the carrying plate (200) being slidably connected to the outer frame (100) in a horizontal direction, and a positioning member (210) being provided on the carrying plate (200) for cooperating with the test water pump (800) and capable of horizontally positioning the test water pump (800); A vertical telescopic cylinder (300), wherein the vertical telescopic cylinder (300) is arranged in a vertical direction, and a fixed end of the vertical telescopic cylinder (300) is fixedly connected to the bearing plate (200); A vertical ballast column (400), wherein the vertical ballast column (400) is fixedly connected to the telescopic end of the vertical telescopic cylinder (300), and the vertical ballast column (400) is capable of compressing and sealing the liquid outlet (830) of the test water pump (800) and the bearing plate (200) in the vertical direction; A horizontal telescopic cylinder (500), wherein the horizontal telescopic cylinder (500) is arranged in a horizontal direction, and a fixed end of the horizontal telescopic cylinder (500) is fixedly connected to the outer frame (100); a horizontal ballast block (600), wherein the horizontal ballast block (600) is fixedly connected to the telescopic end of the horizontal telescopic cylinder (500), and the horizontal ballast block (600) and the outer frame (100) are capable of pressing and fixing the test water pump (800) in the horizontal direction; an O-type sealing ring (700), the O-type sealing ring (700) being arranged on the horizontal ballast block (600) and capable of sealingly connecting the horizontal ballast block (600) and the liquid inlet (820) of the test water pump (800); The horizontal ballast block (600) is provided with an air inlet channel (610) capable of communicating with a liquid inlet (820) of a test water pump (800).

2. The device for testing the air tightness of an electronic water pump according to claim 1, characterized in that: The air inlet channel (610) includes an axial section (620) and a radial section (630) that are vertically connected. The axial section (620) is perpendicular to and passes through the ballast surface (640) of the horizontal ballast block (600), and the radial section (630) is arranged parallel to the ballast surface (640).

3. The device for testing the air tightness of an electronic water pump according to claim 2, characterized in that: An embedding groove (650) is provided on the ballast surface (640) around the axial section (620), and the O-type sealing ring (700) is embedded in the embedding groove (650).

4. The device for testing the air tightness of an electronic water pump according to claim 1, characterized in that: The outer frame (100) comprises a bottom plate (110), a vertical plate (120) and a top plate (130); the bottom plate (110) is arranged horizontally; the two vertical plates (120) are vertically fixedly connected to the two ends of the bottom plate (110) in a one-to-one correspondence; and the two ends of the top plate (130) are fixedly connected to the vertical plates (120).

5. The device for testing the air tightness of an electronic water pump according to claim 4, characterized in that: A horizontal guide rail (140) is provided on the bottom plate (110), a slider (220) is fixedly connected to the lower surface of the carrying plate (200), and the slider (220) is slidably connected to the horizontal guide rail (140).

6. The device for testing the air tightness of an electronic water pump according to claim 4, characterized in that: The two vertical plates (120) are provided with gripping portions (150) on opposite sides thereof.

7. The device for testing the air tightness of an electronic water pump according to claim 1, characterized in that: One side of the bearing plate (200) is vertically fixedly connected to a portal mounting frame (230), and a fixed end of the vertical telescopic cylinder (300) is fixedly connected to the portal mounting frame (230).

8. The device for testing the air tightness of an electronic water pump according to claim 1, characterized in that: The vertical telescopic cylinder (300) and the horizontal telescopic cylinder (500) are both pneumatic cylinders.

9. The device for testing the air tightness of an electronic water pump according to claim 1, characterized in that: The positioning member (210) is a positioning column or a positioning hole, and the number of the positioning members (210) is at least two.

10. The device for testing the air tightness of an electronic water pump according to claim 1, characterized in that: The number of the vertical ballast columns (400) is four.

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