Valve seat grinding device with positioning function

Abstract

The utility model relates to a valve seat grinding device with a positioning function, and relates to the technical field of valve seat grinding, the valve seat grinding device comprises a mounting seat, the mounting seat is detachably mounted on a valve body, a mounting plate is arranged on the mounting seat in a lifting manner, two screw rods are fixedly connected to the mounting seat, and a lifting sliding table is slidably connected to the two screw rods; the two lifting sliding tables are fixedly connected with the mounting plate; and a grinding motor, a control panel, a lifting driving mechanism, a pressure control module and a light supplementing module. According to the grinding device, the technical effects of automatically adjusting the position of the grinding disc and automatically controlling the grinding pressure can be achieved, and the convenience of grinding the sealing face on the valve seat by an operator through the grinding device can be improved.

Description

Technical Field

[0001] The present application relates to the field of valve seat grinding technology, and in particular to a valve seat grinding device with a positioning function. Background Art

[0002] The valve seat and valve disc are important components to ensure the sealing of the breathing valve. Traditional breathing valves are generally carbon steel castings or cast aluminum valve bodies. The valve seat and valve body are integrally cast carbon steel. The rough surface of the valve seat sealing surface is prone to rust and corrosion after long-term use. Therefore, during the maintenance of the breathing valve, it is often necessary to remove the valve seat of the breathing valve and grind the sealing surface.

[0003] In the prior art, the valve seat of the breathing valve is mainly ground manually. When grinding the valve seat, the valve seat needs to be fixed in advance, and a grinding disc matching the valve seat diameter needs to be installed on the grinding rod through an upper limit sleeve, a lower limit sleeve, etc. (the upper limit sleeve and the lower limit sleeve are respectively pressed against the upper and lower sides of the grinding disc), and then the grinding rod is installed on the connecting head of the grinding motor. After sticking sandpaper (or applying grinding paste) on the bottom of the grinding disc, the operator extends the grinding disc into the valve seat so that the sandpaper fits the sealing surface on the valve seat, starts the grinding motor to drive the grinding disc to rotate, and drives the sandpaper to rub the sealing surface.

[0004] However, at the maintenance site, when the operator grinds the valve seat, it is necessary to fix the grinding motor to the valve body through the positioning bracket installed on the grinding motor. Before grinding, the operator installs the grinding disc, grinding paper, and grinding rod on the grinding motor, and then fixes the positioning bracket to the valve body through bolts, etc. However, the valve seat sealing surface positions of different types of breathing valves are different. The operator needs to replace the grinding rods of different lengths according to the position of the valve seat sealing surface, which is inconvenient and needs improvement. Utility Model Content

[0005] In order to achieve the technical effect of automatically adjusting the position of the grinding disc and improve the convenience for operators to use the grinding device to grind the sealing surface, the present application provides a valve seat grinding device with a positioning function.

[0006] The valve seat grinding device with positioning function provided in this application adopts the following technical solution:

[0007] A valve seat grinding device with a positioning function, comprising a mounting seat, the mounting seat being detachably mounted on a valve body, a mounting plate being provided on the mounting seat for lifting and lowering, two screw rods being fixedly connected to the mounting seat, a lifting slide being slidably connected to the two screw rods, and both the lifting slides being fixedly connected to the mounting plate; and:

[0008] A grinding motor, fixedly mounted on the mounting plate;

[0009] A control panel, fixedly mounted on the mounting base, for inputting a start signal and a stop signal;

[0010] A lifting drive mechanism is located on the mounting seat, the driving end of which is matched with the two screw rods for transmission, and is connected to the signal output end of the control panel for receiving the start signal and driving the mounting plate to move toward the direction close to the valve seat, and receiving the stop signal and driving the mounting plate to move toward the direction away from the valve seat;

[0011] A pressure control module, connected to the signal output terminal of the control panel, for receiving the start signal and controlling the grinding pressure between the bottom of the grinding disc and the sealing surface of the valve seat, and outputting a control signal when the grinding pressure reaches a set value;

[0012] A fill light module is fixedly mounted on the mounting base;

[0013] The signal input end of the grinding motor is connected to the control panel and the signal output end of the pressure control module. The grinding motor starts when it receives the control signal and stops when it receives the stop signal.

[0014] The signal input end of the lifting drive mechanism is signal-connected to the signal output end of the pressure control module, and the lifting drive mechanism receives the control signal and stops driving.

[0015] By adopting the above technical solution, when the operator needs to perform grinding maintenance on the sealing surface of the valve seat, the operator can first remove the relevant parts on the valve body, and then fix the mounting seat on the valve body with bolts. Then the operator installs the grinding rod, upper limit sleeve, lower limit sleeve, grinding disc, etc. on the grinding motor, and fixes the sandpaper on the bottom of the grinding disc; when the operator inputs the start signal command through the control panel, the lifting drive mechanism drives the two screws to rotate, so as to drive the mounting plate and the grinding motor to move in the direction close to the sealing surface on the valve seat; during the driving process, the pressure controls the contact pressure between the grinding disc and the sealing surface, and automatically controls the lifting drive mechanism to stop driving when the contact pressure reaches the set pressure value, and at the same time controls the grinding motor to start; when the grinding is completed, the operator inputs the stop signal command through the control panel, the grinding motor stops running, and at the same time the lifting drive mechanism drives the grinding motor and the grinding disc to move in the direction away from the valve seat. Through the coordination and use of the control panel, lifting drive mechanism, and pressure control module, the position of the grinding disc can be automatically adjusted to make the grinding disc and the sealing surface close together, the grinding pressure between the grinding disc and the sealing surface can be controlled, and the technical effect of automatic positioning can be achieved, which improves the usability of the valve seat grinding device and the convenience of the operator using the grinding device to grind the sealing surface on the valve seat. After the grinding is completed, the fill light module can provide a bright and clear view of the sealing surface, which is convenient for the operator to observe the grinding effect of the grinding disc on the sealing surface, further improving the convenience of the operator using the grinding device.

[0016] Preferably, the two screw rods are respectively provided with transmission gears, the lifting drive mechanism comprises a lifting motor, a transmission belt and a driving gear, the transmission gear is rotatably mounted on the mounting seat, and the transmission belt is sleeved on the driving gear and the two transmission gears;

[0017] The cylinder body of the lifting motor is fixedly connected to the mounting seat, and the driving shaft of the lifting motor is interference fit with the transmission gear.

[0018] By adopting the above technical solution, through the mutual coordination and use of the lifting motor, the transmission toothed belt, the driving gear and the two transmission gears, after the operator inputs the start signal command or the stop signal command through the control panel, the forward and reverse rotation of the lifting motor can drive the driving gear to rotate in different directions, and the two lead screws can be driven to rotate in different directions through the coordination of the transmission toothed belt and the transmission gear, so as to drive the mounting plate to move toward or away from the valve seat.

[0019] Preferably, the tops of the two screw rods are respectively fixedly connected with anti-drop blocks.

[0020] By adopting the above technical solution, the anti-dropping block can limit the position of the mounting plate, thereby reducing the occurrence of the mounting plate falling off the screw rod.

[0021] Preferably, the pressure control module comprises:

[0022] A pressure sensor is fixedly mounted on the bottom of the upper limit sleeve, is tightly arranged between the upper limit sleeve and the grinding disc, is connected to the signal output end of the control panel, and is used to detect the contact pressure between the upper limit sleeve and the grinding disc and output a sensed pressure signal;

[0023] A single chip microcomputer is connected to the signal output terminal of the pressure sensor, and is used to receive the sensed pressure signal and calculate the pressure change value, and output a control signal when the pressure change value reaches a set pressure value;

[0024] The signal input ends of the lifting motor and the grinding motor are signal-connected to the signal output end of the single-chip microcomputer. The lifting motor receives the control signal and stops running, and the grinding motor receives the control signal and starts running.

[0025] By adopting the above technical scheme, in the process of the driving motor driving the mounting plate, the grinding motor, and the grinding disc to move toward the direction close to the valve seat, the pressure sensor senses the contact pressure between the upper limit sleeve and the grinding disc, and in the process of the bottom of the grinding disc contacting and pressing against the sealing surface, the contact pressure between the upper limit sleeve and the grinding disc gradually increases. The contact pressure and the grinding pressure between the grinding disc and the sealing surface can be calculated by calculating the pressure change value through the single-chip microcomputer. When the grinding pressure reaches the set pressure value, the single-chip microcomputer controls the driving motor to stop driving the grinding disc to move continuously downward and controls the grinding motor to start at the same time, so as to realize automatic control of the grinding pressure and automatically start the grinding motor when the grinding pressure is reached.

[0026] Preferably, the fill light module comprises a mounting rod and an LED lamp, the mounting rod is fixedly connected to the mounting seat, and the LED lamp is fixedly mounted on the mounting rod.

[0027] By adopting the above technical solution, the operator can use the LED light to provide a clear and bright field of view for checking the grinding effect of the sealing surface.

[0028] Preferably, it also includes a timer and a display, wherein the signal input end of the timer is connected to the control panel and the signal output end of the single chip microcomputer, the timer receives the control signal and starts timing and outputs a grinding time signal, and the timer receives the stop signal and stops timing;

[0029] The display is fixedly mounted on the mounting base, a signal input end of the display is signal-connected to a signal output end of the timer, and the display receives and displays the grinding time signal.

[0030] By adopting the above technical solution, through the mutual coordination and use between the timer and the display, the operator can intuitively understand and grasp the grinding time through the display on the mounting base, so as to accurately control the grinding time of the sealing surface.

[0031] In summary, the valve seat grinding device with positioning function of the present application includes at least one of the following beneficial technical effects:

[0032] 1. Through the coordination and use of the control panel, lifting motor, driving gear, transmission gear, transmission rack, pressure sensor, and single-chip computer, the technical effect of automatically controlling the movement of the mounting plate and the grinding motor toward or away from the valve seat can be achieved. At the same time, the contact pressure between the grinding disc and the sealing surface can be automatically controlled to achieve the technical effect of automatically positioning the grinding disc, which can effectively improve the convenience of the operator to use the grinding device to grind the sealing surface of the valve seat;

[0033] 2. Through the setting of LED lights, after grinding, the operator can intuitively understand the grinding effect of the sealing surface with the help of LED lights, further improving the convenience of the operator in using the grinding device;

[0034] 3. The grinding time can be automatically counted by using the timer and the display. The operator can easily grasp the grinding time through the display to control the shutdown of the grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a grinding device.

[0036] Figure 2 yes Figure 1 The enlarged schematic diagram at point A in the middle is mainly used to show the installation position of the pressure sensor.

[0037] Figure 3 It is a schematic diagram of an embodiment of the present application for demonstrating the internal signal transmission of a grinding device.

[0038] Explanation of the reference numerals: 1. Mounting seat; 11. Mounting plate; 12. Screw rod; 121. Lifting slide; 122. Transmission gear; 123. Anti-slip block; 13. Grinding motor; 2. Valve body; 21. Valve seat; 22. Sealing surface; 3. Lifting drive mechanism; 31. Lifting motor; 32. Transmission belt; 33. Driving gear; 4. Pressure sensor; 5. Fill light module; 51. Mounting rod; 52. LED lamp; 6. Grinding disc; 61. Sandpaper; 62. Upper limit sleeve; 63. Grinding rod. DETAILED DESCRIPTION

[0039] The following is combined with Figure 1-3 This application is described in further detail.

[0040] Example

[0041] The embodiment of the present application discloses a valve seat grinding device with a positioning function. Figure 1 and Figure 3 , including a mounting seat 1, the mounting seat 1 can be detachably mounted on the valve body 2, a mounting plate 11 is provided on the mounting seat 1 for lifting, two screw rods 12 are fixedly connected to the mounting seat 1, and a lifting slide 121 is slidably connected to the two screw rods 12, and the two lifting slides 121 are fixedly connected to the mounting plate 11.

[0042] And: a grinding motor 13, fixedly mounted on the mounting plate 11; a control panel, fixedly mounted on the mounting seat 1, for inputting a start signal and a stop signal; a lifting drive mechanism 3, located on the mounting seat 1, with a driving end that cooperates with two lead screws 12 in transmission, and connected to a signal output end of the control panel for receiving a start signal and driving the mounting plate 11 to move toward the direction close to the valve seat 21, and receiving a stop signal and driving the mounting plate 11 to move toward the direction away from the valve seat 21; a pressure control module, connected to a signal output end of the control panel for receiving a start signal and controlling the grinding pressure between the bottom of the grinding disc 6 and the sealing surface 22 of the valve seat 21, and outputting a control signal when the grinding pressure reaches a set value; a fill light module 5, fixedly mounted on the mounting seat 1.

[0043] The signal input end of the grinding motor 13 is connected to the signal output end of the control panel and the pressure control module. The grinding motor 13 receives the control signal and starts, and receives the stop signal and stops running; the signal input end of the lifting drive mechanism 3 is connected to the signal output end of the pressure control module. The lifting drive mechanism 3 receives the control signal and stops driving.

[0044] When the operator needs to grind and maintain the sealing surface 22 on the valve seat 21, the operator can first remove the relevant components on the valve body 2, and then fix the mounting seat 1 on the valve body 2 with bolts. Then the operator installs the grinding rod 63, the upper limit sleeve 62, the lower limit sleeve, the grinding disc 6, etc. on the grinding motor 13, and fixes the sandpaper 61 at the bottom of the grinding disc 6.

[0045] When the operator inputs the start signal command through the control panel, the lifting drive mechanism 3 drives the two screws 12 to rotate, so as to drive the mounting plate 11 and the grinding motor 13 to move together toward the sealing surface 22 on the valve seat 21; during the driving process, the contact pressure between the grinding disc 6 and the sealing surface 22 is pressure-controlled, and when the contact pressure reaches the set pressure value, the lifting drive mechanism 3 is automatically controlled to stop driving, and the grinding motor 13 is controlled to start.

[0046] When the grinding is completed, the operator inputs a stop signal command through the control panel, and the grinding motor 13 stops running. At the same time, the lifting drive mechanism 3 drives the grinding motor 13 and the grinding disc 6 to move in a direction away from the valve seat 21.

[0047] By coordinating and using the control panel, the lifting drive mechanism 3, and the pressure control module, it is possible to automatically adjust the position of the grinding disk 6 so that the grinding disk 6 and the sealing surface 22 are pressed tightly against each other, control the grinding pressure between the grinding disk 6 and the sealing surface 22, and achieve the technical effect of automatic positioning, thereby improving the usability of the valve seat 21 grinding device and the convenience for operators to use the grinding device to grind the sealing surface 22 on the valve seat 21.

[0048] After the grinding is completed, the fill light module 5 can provide a bright and clear view for the sealing surface 22, so that the operator can observe the grinding effect of the grinding disc 6 on the sealing surface 22, thereby further improving the convenience of the operator in using the grinding device.

[0049] Reference Figure 1 , transmission gears 122 are respectively installed on the two screw rods 12, the lifting drive mechanism 3 includes a lifting motor 31, a transmission belt 32 and a driving gear 33, the transmission gear 122 is rotatably installed on the mounting base 1, and the transmission belt 32 is sleeved on the driving gear 33 and the two transmission gears 122; the cylinder body of the lifting motor 31 is fixedly connected to the mounting base 1, and the driving shaft of the lifting motor 31 is interference fit with the transmission gear 122.

[0050] By matching and using the lifting motor 31, the transmission belt 32, the drive gear 33 and the two transmission gears 122, after the operator inputs a start signal command or a stop signal command through the control panel, the lifting motor 31 can drive the drive gear 33 to rotate in different directions by forward and reverse rotation, and the transmission belt 32 and the transmission gear 122 can drive the two screw rods 12 to rotate in different directions, so as to drive the mounting plate 11 to move toward or away from the valve seat 21.

[0051] Reference Figure 1 The tops of the two screw rods 12 are respectively fixedly connected with anti-dropping blocks 123. The anti-dropping blocks 123 can limit the position of the mounting plate 11, thereby reducing the occurrence of the situation where the mounting plate 11 falls off from the screw rod 12.

[0052] Preferably, the pressure control module includes: a pressure sensor 4, which is fixedly mounted on the bottom of the upper limit sleeve 62, tightly arranged between the upper limit sleeve 62 and the grinding disk 6, and is signal-connected to the signal output end of the control panel, for detecting the contact pressure between the upper limit sleeve 62 and the grinding disk 6 and outputting an induced pressure signal; a single-chip microcomputer, which is signal-connected to the signal output end of the pressure sensor 4, for receiving the induced pressure signal and calculating the pressure change value, and outputting a control signal when the pressure change value reaches a set pressure value; the signal input ends of the lifting motor 31 and the grinding motor 13 are signal-connected to the signal output end of the single-chip microcomputer, the lifting motor 31 receives the control signal and stops running, and the grinding motor 13 receives the control signal and starts.

[0053] When the driving motor drives the mounting plate 11, the grinding motor 13 and the grinding disc 6 to move toward the valve seat 21, the pressure sensor 4 senses the contact pressure between the upper limit sleeve 62 and the grinding disc 6. When the bottom of the grinding disc 6 contacts and presses against the sealing surface 22, the contact pressure between the upper limit sleeve 62 and the grinding disc 6 gradually increases. The pressure change value is calculated by the single-chip microcomputer, and the contact pressure and the grinding pressure between the grinding disc 6 and the sealing surface 22 can be calculated. When the grinding pressure reaches the set pressure value, the single-chip microcomputer controls the driving motor to stop driving the grinding disc 6 to move continuously downward and controls the grinding motor 13 to start at the same time, so as to realize automatic control of the grinding pressure and automatically start the grinding motor 13 when the grinding pressure is reached.

[0054] Reference Figure 1 The fill light module 5 includes a mounting rod 51 and an LED lamp 52. The mounting rod 51 is fixedly connected to the mounting seat 1, and the LED lamp 52 is fixedly mounted on the mounting rod 51. The LED lamp 52 can provide a clear and bright field of vision for the operator to check the grinding effect of the sealing surface 22.

[0055] Reference Figure 3 , also includes a timer and a display, the signal input end of the timer is connected to the control panel and the signal output end of the single-chip microcomputer, the timer receives the control signal and starts timing, and outputs the grinding time signal, the timer receives the stop signal and stops timing; the display is fixedly installed on the mounting base 1, the signal input end of the display is connected to the signal output end of the timer, the display receives the grinding time signal and displays it.

[0056] By using the timer and the display together, the operator can intuitively understand and grasp the grinding time through the display on the mounting seat 1, so as to accurately control the grinding time of the sealing surface 22.

[0057] The implementation principle of a valve seat grinding device with a positioning function in an embodiment of the present application is: through the coordination and use of the control panel, the lifting motor 31, the driving gear 33, the transmission gear 122, the transmission rack, the pressure sensor 4, and the single-chip microcomputer, the technical effect of automatically controlling the movement of the mounting plate 11 and the grinding motor 13 toward or away from the valve seat 21 can be achieved, and at the same time, the contact pressure between the grinding disk 6 and the sealing surface 22 can be automatically controlled to achieve the technical effect of automatically positioning the grinding disk 6, which can effectively improve the convenience of the operator using the grinding device to grind the sealing surface 22 of the valve seat 21.

[0058] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A valve seat grinding device with positioning function, characterized in that: The valve body (2) comprises a mounting seat (1), wherein the mounting seat (1) is detachably mounted on the valve body (2), a mounting plate (11) is provided on the mounting seat (1) for lifting, two screw rods (12) are fixedly connected to the mounting seat (1), a lifting slide (121) is slidably connected to the two screw rods (12), and the two lifting slides (121) are fixedly connected to the mounting plate (11); as well as: A grinding motor (13) is fixedly mounted on the mounting plate (11); A control panel, fixedly mounted on the mounting base (1), and used for inputting a start signal and a stop signal; A lifting drive mechanism (3) is located on the mounting seat (1), the driving end of which is in driving cooperation with the two screw rods (12) and is connected to the signal output end of the control panel, and is used to receive the start signal and drive the mounting plate (11) to move in a direction close to the valve seat (21), and receive the stop signal and drive the mounting plate (11) to move in a direction away from the valve seat (21); A pressure control module, connected to the signal output terminal of the control panel, for receiving the start signal and controlling the grinding pressure between the bottom of the grinding disc (6) and the sealing surface (22) of the valve seat (21), and outputting a control signal when the grinding pressure reaches a set value; A fill light module (5) is fixedly mounted on the mounting base (1); The signal input end of the grinding motor (13) is connected to the control panel and the signal output end of the pressure control module, and the grinding motor (13) starts when it receives the control signal and stops when it receives the stop signal; The signal input end of the lifting drive mechanism (3) is signal-connected to the signal output end of the pressure control module, and the lifting drive mechanism (3) receives the control signal and stops driving.

2. A valve seat grinding device with positioning function according to claim 1, characterized in that: A transmission gear (122) is respectively mounted on the two screw rods (12); the lifting drive mechanism (3) comprises a lifting motor (31), a transmission toothed belt (32) and a driving gear (33); the transmission gear (122) is rotatably mounted on the mounting seat (1); the transmission toothed belt (32) is sleeved on the driving gear (33) and the two transmission gears (122); The cylinder body of the lifting motor (31) is fixedly connected to the mounting seat (1), and the driving shaft of the lifting motor (31) is interference fit with the transmission gear (122).

3. A valve seat grinding device with positioning function according to claim 2, characterized in that: The tops of the two screw rods (12) are respectively fixedly connected with anti-drop blocks (123).

4. A valve seat grinding device with positioning function according to claim 2, characterized in that: The pressure control module comprises: A pressure sensor (4) is fixedly mounted on the bottom of the upper limit sleeve (62), is tightly arranged between the upper limit sleeve (62) and the grinding disc (6), is signal-connected to the signal output end of the control panel, and is used to detect the contact pressure between the upper limit sleeve (62) and the grinding disc (6) and output a sensed pressure signal; A single chip microcomputer, connected to the signal output terminal of the pressure sensor (4), configured to receive the sensed pressure signal and calculate the pressure change value, and output a control signal when the pressure change value reaches a set pressure value; The signal input ends of the lifting motor (31) and the grinding motor (13) are signal-connected to the signal output end of the single-chip microcomputer; the lifting motor (31) receives the control signal and stops running, and the grinding motor (13) receives the control signal and starts running.

5. A valve seat grinding device with positioning function according to claim 4, characterized in that: The fill light module (5) comprises a mounting rod (51) and an LED lamp (52); the mounting rod (51) is fixedly connected to the mounting seat (1); and the LED lamp (52) is fixedly mounted on the mounting rod (51).

6. The valve seat grinding device with positioning function according to claim 4, characterized in that: It also includes a timer and a display, wherein the signal input end of the timer is connected to the control panel and the signal output end of the single chip microcomputer, the timer receives the control signal and starts timing, and outputs a grinding time signal, and the timer receives the stop signal and stops timing; The display is fixedly mounted on the mounting base (1), the signal input end of the display is signal-connected to the signal output end of the timer, and the display receives the grinding time signal and displays it.

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