Vacuum check valve equipment

Abstract

This utility model discloses a one-way valve airtightness testing device for automotive brake fluid reservoirs, specifically a vacuum one-way valve device. It includes a frame with a worktable fixed in the middle. A leak detector is mounted at the lower end of the frame. Two base plates are fixed to the top of the worktable, and multiple bases are fixed to each base. A one-way valve is placed on the top of each base. The one-way valve has a first flow channel, a second flow channel, and a third flow channel at its upper, rear, and lower ends, respectively. A bracket is fixed to the base plate, with a first sealing device for blocking the first flow channel at its upper end and a second sealing device for blocking the second flow channel at the rear end of the base plate. The lower left end of the one-way valve has a convex ring located outside the third flow channel. The upper end of the base has an upward-opening placement groove, in which a sealing block is installed to press against the bottom of the convex ring. A lifting mechanism is installed at the bottom of the worktable. This vacuum one-way valve device offers good sealing performance and high testing efficiency.

Description

Technical Field

[0001] This utility model relates to a one-way valve airtightness testing device for automotive brake fluid reservoirs, specifically a vacuum one-way valve device. Background Technology

[0002] After production, the one-way valve of the automotive brake fluid reservoir requires an airtightness test. The one-way valve has a flow port at its top, rear, and bottom. During testing, these three flow ports must be sealed, and a leak detector is used for the airtightness test. The test involves placing the one-way valve on a base that matches its shape. The groove in the base needs to fit the one-way valve tightly to prevent tipping. While the flow ports at the top and rear can be sealed using automated sealing equipment, the flow port at the bottom can only be sealed by a sealing gasket fixed inside the base, resulting in a less than ideal seal. Furthermore, because the one-way valve is tightly secured in the groove of the base, manual removal after testing is time-consuming and laborious. Utility Model Content

[0003] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a vacuum check valve device.

[0004] The technical solution of this utility model is: a vacuum one-way valve device, including a frame, a workbench fixed in the middle of the frame, a leak detector installed at the lower end of the frame, a control panel installed at the upper end of the frame, two base plates distributed left and right fixed on the top of the workbench, and multiple bases distributed from left to right fixed on each base plate, with a one-way valve placed on the upper end of each base plate. The one-way valve has a first flow channel, a second flow channel, and a third flow channel at its upper end, rear end, and lower end, respectively. A bracket is fixed on each of the two base plates, with a first sealing device for blocking the first flow channel installed on the upper end of the bracket, and a second sealing device for blocking the second flow channel installed on the rear end of the base plate.

[0005] The lower left end of the one-way valve has a downward protruding ring located outside the third flow channel opening. The upper end of the base has an upward-facing placement groove, in which a sealing block is installed to press against the bottom of the protruding ring. Two lifting mechanisms are installed on the bottom of the worktable, each including multiple sets of push rod assemblies and a lifting cylinder for driving the push rod assemblies up and down. The push rod assembly consists of a long push rod and a short push rod. Both the long and short push rods pass through the worktable and the base plate from bottom to top and then extend into the base. The top of the long push rod is fixedly connected to the bottom of the sealing block, and the top of the short push rod rests against the lower right end of the one-way valve.

[0006] Furthermore, the first sealing device includes a first cylinder that extends vertically and is fixed to the upper end of the bracket, and a first plug located above the first flow channel opening is fixed to the piston rod end of the lower end of the first cylinder.

[0007] Furthermore, the second sealing device includes a second cylinder that extends forward and backward and is fixed to the rear end of the base plate, and a second plug located behind the second flow channel is fixed to the piston rod end at the front end of the second cylinder.

[0008] Furthermore, the left end of the placement groove has a boss, and the boss has an upward-facing groove. The sealing block is inserted into the groove and slides up and down with the groove.

[0009] Furthermore, the lifting mechanism includes a fixed plate fixed to the bottom of the workbench and a support plate fixed inside the lower end of the frame. The bottom of the support plate is fixedly connected to a lifting cylinder extending vertically. The piston rod end of the upper end of the lifting cylinder is fixedly connected to a lifting platform. The fixed plate, lifting platform, and support plate are distributed from top to bottom. Multiple vertically extending guide columns are fixed between the fixed plate and the support plate. The guide columns pass through the lifting platform. Long and short push rods are both vertically extending and fixed to the top of the lifting platform. Both long and short push rods pass through the fixed plate.

[0010] Furthermore, the base is provided with two through holes, one vertically and the other horizontally distributed, namely a first through hole and a second through hole. The upper end of the first through hole is connected to the groove, and the first through hole and the second through hole are respectively for the long push rod and the short push rod to pass through.

[0011] The advantages of using the vacuum check valve device provided by this utility model are:

[0012] By setting a sealing block that mates with the one-way valve protruding ring in the placement groove of the base, and fixing the sealing block to the top of the long push rod, the sealing block can press the bottom of the protruding ring upward with the action of the lifting cylinder during the test, thereby effectively blocking the third flow channel opening. Compared with the existing technology that only relies on the fixed sealing gasket for contact sealing, the sealing effect is more reliable and effectively reduces the risk of leakage of the third flow channel opening during the test.

[0013] After the inspection is completed, the lifting cylinder drives the long and short push rods to move upwards simultaneously. The long and short push rods lift the one-way valve upwards and push the one-way valve out of the placement slot of the base. The operator can easily take out the product, saving time and effort and improving work efficiency.

[0014] The coordinated action of the lifting cylinder, the first cylinder, and the second cylinder enables automatic sealing and automatic ejection of the one-way valve, reducing manual intervention and lowering the labor intensity of operators. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation of the lifting mechanism of this utility model;

[0017] Figure 3 This is a schematic diagram of the installation of the one-way valve of this utility model;

[0018] Figure 4 This is a front view schematic diagram of the lifting mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the installation of the sealing block of this utility model;

[0020] Figure 6 This is a schematic diagram of the one-way valve of this utility model.

[0021] The diagram shows: 1—frame, 2—workbench, 3—leak detector, 4—control panel, 5—base plate, 6—base, 61—placement slot, 62—protrusion, 621—groove, 63—first through hole, 64—second through hole, 7—one-way valve, 71—first flow channel opening, 72—second flow channel opening, 73—third flow channel opening, 74—convex ring, 8—bracket, 9—sealing block, 10—lifting mechanism, 101—lifting cylinder, 102—long push rod, 103—short push rod, 104—fixed plate, 105—support plate, 106—lifting platform, 107—guide column, 11—first cylinder, 12—first plug, 13—second cylinder, 14—second plug. Detailed Implementation

[0022] To provide a more intuitive and complete understanding of the technical solution of this utility model, the following non-limiting features are described in conjunction with the accompanying drawings:

[0023] like Figure 1 — Figure 6 As shown, the vacuum one-way valve device includes a frame 1, a workbench 2 fixed in the middle of the frame 1, a leak detector 3 installed at the lower end of the frame 1, a control panel 4 installed at the upper end of the frame 1, two base plates 5 distributed left and right fixed on the top of the workbench 2, and multiple bases 6 distributed from left to right fixed on each base plate 5, with a one-way valve 7 placed on the upper end of each base 6. The one-way valve 7 has a first flow channel 71, a second flow channel 72, and a third flow channel 73 at its upper end, rear end, and lower end, respectively. A bracket 8 is fixed on each of the two base plates 5, with a first sealing device for blocking the first flow channel 71 installed at the upper end of the bracket 8, and a second sealing device for blocking the second flow channel 72 installed at the rear end of the base plate 5.

[0024] The lower left end of the one-way valve 7 has a downward protruding ring 74 located outside the third flow channel 73. The upper end of the base 6 has an upward-facing placement groove 61. A sealing block 9 for pressing against the bottom of the protruding ring 74 is installed in the placement groove 61. Two lifting mechanisms 10 distributed to the left and right are installed at the bottom of the workbench 2. Both lifting mechanisms 10 include multiple sets of push rod assemblies and a lifting cylinder 101 for driving the push rod assemblies to move up and down. The push rod assembly consists of a long push rod 102 and a short push rod 103. The long push rod 102 and the short push rod 103 pass through the workbench 2 and the base plate 5 from bottom to top and then extend into the base 6. The top of the long push rod 102 is fixedly connected to the bottom of the sealing block 9, and the top of the short push rod 103 rests against the lower right end of the one-way valve 7.

[0025] like Figure 3 As shown, the first sealing device includes a first cylinder 11 extending vertically and fixed to the upper end of the bracket 8. A first plug 12, located above the first flow channel opening 71, is fixed to the piston rod end of the lower end of the first cylinder 11. The number of first cylinders 11 is equal to the number of one-way valves 7. An air pipe for connecting to the first flow channel opening 71 is installed on the first plug 12, and the air pipe is connected to a leak detector 3. When the first cylinder 11 operates, it can drive the first plug 12 to move up and down, thereby opening or blocking the first flow channel opening 71. The first cylinder 11 drives the first plug 12 downward and presses down the one-way valve 7, allowing the one-way valve 7 to be stably placed on the base 6.

[0026] like Figure 3 As shown, the second sealing device includes a second cylinder 13 extending forward and backward and fixed to the rear end of the base plate 5. A second plug 14 is fixed to the piston rod end at the front end of the second cylinder 13, located behind the second flow channel opening 72. The number of second cylinders 13 is equal to the number of one-way valves 7. An air pipe for connecting to the second flow channel opening 72 is installed on the second plug 14, and the air pipe is connected to a leak detector 3. When the second cylinder 13 operates, it can drive the second plug 14 to move back and forth, thereby opening or blocking the second flow channel opening 72.

[0027] like Figure 5 As shown, in order to allow the sealing block 9 to move up and down stably, there is a boss 62 at the left end of the placement groove 61, and there is an upward-facing groove 621 in the boss 62. The sealing block 9 is inserted into the groove 621 and slides up and down with the groove 621.

[0028] like Figure 2 , Figure 4As shown, the lifting mechanism 10 includes a fixed plate 104 fixed to the bottom of the worktable 2 and a support plate 105 fixed inside the lower end of the frame 1. A lifting cylinder 101 extending vertically is fixedly connected to the bottom of the support plate 105. A lifting platform 106 is fixedly connected to the piston rod end of the upper end of the lifting cylinder 101. The fixed plate 104, lifting platform 106, and support plate 105 are distributed from top to bottom. Multiple vertically extending guide columns 107 are fixed between the fixed plate 104 and the support plate 105, passing through the lifting platform 106. Long push rods 102 and short push rods 103 are both vertically extending and fixed to the top of the lifting platform 106, passing through the fixed plate 104. When the lifting cylinder 101 operates, it can drive the lifting platform 106 to move up and down, thereby driving the long push rods 102 and short push rods 103 to move up and down. The guide columns 107 are provided to ensure that the lifting platform 106 can move up and down stably. The length of the long push rod 102 is greater than the length of the short push rod 103 because the bottom of the one-way valve 7 is uneven at both ends, so two lengths need to be set. The long push rod 102, together with the short push rod 103, can stably push the one-way valve 7 upward.

[0029] like Figure 5 As shown, in order to allow the long push rod 102 and the short push rod 103 to extend into the base 6, the base 6 is provided with two through holes, namely the first through hole 63 and the second through hole 64, which are vertically connected and horizontally distributed. The upper end of the first through hole 63 is connected to the groove 621, and the long push rod 102 and the short push rod 103 are respectively allowed to pass through the first through hole 63 and the second through hole 64.

[0030] like Figure 3 As shown, there are three bases 6 on each of the two base plates 5, meaning that this invention can test six one-way valves 7 at once, resulting in high testing efficiency.

[0031] During operation, the operator manually places the one-way valve 7 onto the base 6. The first cylinder 11 controls the first plug 12 to press down on the one-way valve 7 and block and seal the first flow channel 71. The second cylinder 13 controls the second plug 14 to move forward and block and seal the second flow channel 72. The lifting cylinder 101 controls the lifting platform 106 to move upward. The sealing block 9 fixed to the top of the long push rod 102 will squeeze the convex ring 74 at the lower left end of the one-way valve 7, thereby blocking and sealing the third flow channel 73. Then, the leak detector 3 starts to perform a vacuum test and holds pressure to detect whether the one-way valve 7 is leaking.

[0032] This utility model provides a sealing block 9 that cooperates with the protruding ring 74 of the one-way valve 7 in the placement groove 61 of the base 6, and fixes the sealing block 9 to the top of the long push rod 102. During the test, the sealing block 9 can press the bottom of the protruding ring 74 upward with the action of the lifting cylinder 101, thereby effectively blocking the third flow channel 73. Compared with the existing technology that only relies on the fixed sealing gasket for contact sealing, the sealing effect is more reliable and effectively reduces the risk of leakage of the third flow channel 73 during the test.

[0033] After the test is completed, the lifting cylinder 101 drives the long lifting rod 102 and the short lifting rod 103 to move upwards simultaneously. The long lifting rod 102 and the short lifting rod 103 lift the one-way valve 7 upwards and push the one-way valve 7 out of the placement slot 61 of the base 6. The operator can easily take out the product, saving time and effort and improving work efficiency.

[0034] This invention achieves automatic sealing and automatic ejection of the one-way valve 7 through the coordinated action of the lifting cylinder 101, the first cylinder 11, and the second cylinder 13, reducing manual intervention and lowering the labor intensity of operators.

[0035] Of course, the above are only preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any simple modifications and equivalent structural changes made based on the contents of the present utility model specification and drawings should also be included within the patent protection scope of the present utility model.

Claims

1. A vacuum check valve device, comprising a frame, a worktable fixed in the middle of the frame, a leak detector mounted at the lower end of the frame, and a control panel mounted at the upper end of the frame, characterized in that: The top of the workbench is fixed with two base plates distributed on the left and right. Each base plate is fixed with multiple bases distributed from left to right. Each base is equipped with a one-way valve. The one-way valve has a first flow channel, a second flow channel, and a third flow channel at its upper, rear, and lower ends, respectively. Each base plate is fixed with a bracket. The upper end of the bracket is equipped with a first sealing device for blocking the first flow channel, and the rear end of the base plate is equipped with a second sealing device for blocking the second flow channel. The lower left end of the one-way valve has a downward protruding ring located outside the third flow channel opening. The upper end of the base has an upward-facing placement groove, in which a sealing block is installed to press against the bottom of the protruding ring. Two lifting mechanisms are installed on the bottom of the worktable, each including multiple sets of push rod assemblies and a lifting cylinder for driving the push rod assemblies up and down. The push rod assembly consists of a long push rod and a short push rod. Both the long and short push rods pass through the worktable and the base plate from bottom to top and then extend into the base. The top of the long push rod is fixedly connected to the bottom of the sealing block, and the top of the short push rod rests against the lower right end of the one-way valve.

2. The vacuum check valve apparatus of claim 1, wherein: The first sealing device includes a first cylinder that extends vertically and is fixed to the upper end of a bracket, and a first plug located above the first flow channel opening is fixed to the piston rod end of the lower end of the first cylinder.

3. The vacuum check valve apparatus of claim 1, wherein: The second sealing device includes a second cylinder that extends forward and backward and is fixed to the rear end of the base plate, and a second plug located behind the second flow channel is fixed to the piston rod end at the front end of the second cylinder.

4. The vacuum check valve apparatus of claim 1, wherein: The left end of the placement slot has a boss, and the boss has an upward-facing groove. The sealing block is inserted into the groove and slides up and down with the groove.

5. The vacuum check valve apparatus of claim 4, wherein: The lifting mechanism includes a fixed plate fixed to the bottom of the workbench and a support plate fixed inside the lower end of the frame. The bottom of the support plate is fixedly connected to a lifting cylinder that extends vertically. The piston rod at the upper end of the lifting cylinder is fixedly connected to a lifting platform. The fixed plate, lifting platform, and support plate are distributed from top to bottom. Multiple vertically extending guide columns are fixed between the fixed plate and the support plate. The guide columns pass through the lifting platform. Long and short push rods are both vertically extended and fixed to the top of the lifting platform. Both long and short push rods pass through the fixed plate.

6. The vacuum check valve apparatus of claim 5, wherein: The base has two through holes, one vertically and the other horizontally distributed. The upper end of the first through hole is connected to the groove. The first through hole and the second through hole are respectively for the long push rod and the short push rod to pass through.

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