Automatic checking and adjusting platform for pressure switch

Abstract

The utility model provides an automatic checking and adjusting platform for a pressure switch. The automatic checking and adjusting platform comprises a bracket and a main controller, the clamping unit is arranged on the bracket and is used for fixing the detected pressure switch; the pressure adjusting unit is arranged on the bracket and is used for adjusting the detected pressure switch; the pressure transmission pipeline is connected between the pressure interface of the main controller and the pressure interface of the detected pressure switch and is used for realizing pressure transmission; the adjusting signal transmission line is connected between an adjusting signal interface of the main controller and the pressure adjusting unit and is used for transmitting an adjusting signal generated by the main controller to the pressure adjusting unit so as to realize pressure adjustment; and the switching signal transmission line is connected between the switching signal interface of the main controller and the switching signal interface of the detected pressure switch so as to realize switching signal transmission. And automatic verification and accurate adjustment of the pressure switch are realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial automation control technical field more specifically, relate to a pressure switch automatic check and adjust platform. BACKGROUND

[0002] Pressure switch refers to the switch value instrument that the switch value signal is produced to the set value through the pressure of measured medium measurement. Through the instrument of different forms and measurement range selection, can be used for measuring pressure, differential pressure, liquid level, flow rate etc. The set value of physical quantity. According to different working conditions and measurement range, pressure switch adopts different pressure measuring element, generally can be divided into spring tube type pressure switch and force balance type pressure switch. The existing design can not meet the instrument adjustment demand in the full-automatic adjustment process of pressure switch. UTILITARY MODEL CONTENT

[0003] The utility model solves technical problems at, in view of the above-mentioned defect of unable to realize high-precision automatic adjustment of prior art, provide a pressure switch automatic check and adjust platform.

[0004] The utility model solves technical problems at, in view of the above-mentioned defect of unable to realize high-precision automatic adjustment of prior art, provide a pressure switch automatic check and adjust platform.

[0005] Clamping unit is set up in the bracket and is used for fixing the pressure switch under test;

[0006] Pressure regulating unit is set up in the bracket and is used for adjusting the pressure switch under test;

[0007] Pressure transmission pipeline is connected between the pressure interface of the main controller and the pressure interface of the pressure switch under test for realizing pressure transmission;

[0008] Adjusting signal transmission line is connected between the adjusting signal interface of the main controller and the pressure regulating unit for transmitting the adjusting signal generated by the main controller to the pressure regulating unit to realize pressure regulation;

[0009] Switch signal transmission line is connected between the switch signal interface of the main controller and the switch signal interface of the pressure switch under test to realize switch signal transmission.

[0010] In an embodiment, the pressure regulating unit includes a set value regulating unit and a hysteresis regulating unit, and the bracket includes:

[0011] First support rod and first telescopic rod connected thereto, and the set value regulating unit is arranged on the first telescopic rod;

[0012] The second supporting rod and the second telescopic rod connected therewith, and the hysteresis adjusting unit is arranged on the second telescopic rod.

[0013] In an embodiment, the clamping unit comprises:

[0014] A clamping device, which is in contact with the pressure switch to be tested to achieve the clamping function;

[0015] An adjusting hand wheel connected with the clamping device and capable of adjusting the clamping force of the clamping device by rotation to fix the pressure switch to be tested.

[0016] In an embodiment, the pressure transmission pipeline comprises:

[0017] A pressurization transmission pipeline connected with the pressurization pressure interface of the main controller, for transmitting the pressurized gas pressure to the pressurization pressure interface of the pressure switch to be tested to achieve the increase of pressure;

[0018] A depressurization transmission pipeline connected with the depressurization pressure interface of the main controller, for transmitting the depressurized gas pressure to the depressurization pressure interface of the pressure switch to be tested to achieve the decrease of pressure;

[0019] In the same time, the pressure transmission is carried out through the pressurization transmission pipeline or the depressurization transmission pipeline.

[0020] In an embodiment, it further comprises a first interface seat and a second interface seat;

[0021] The pressurization transmission pipeline is connected with the pressurization pressure interface of the pressure switch to be tested through the first interface seat;

[0022] The depressurization transmission pipeline is connected with the depressurization pressure interface of the pressure switch to be tested through the second interface seat.

[0023] In an embodiment, the adjusting signal transmission line comprises:

[0024] A constant value adjusting transmission line connected between the constant value adjusting signal interface of the main controller and the constant value adjusting unit, for transmitting the constant value adjusting signal generated by the main controller to the constant value adjusting unit to achieve the constant value adjustment of pressure;

[0025] A hysteresis adjusting transmission line connected between the hysteresis adjusting signal interface of the main controller and the hysteresis adjusting unit, for transmitting the hysteresis adjusting signal generated by the main controller to the hysteresis adjusting unit to achieve the hysteresis adjustment of pressure.

[0026] In an embodiment, the set value adjusting unit comprises a first step adjusting device, a set value adjusting knob and a set value adjusting screw, the set value adjusting screw being connected with a set value adjusting end of the pressure switch under test; the first step adjusting device is connected with the first telescopic rod and the set value adjusting screw respectively, and the set value adjusting screw is connected with the set value adjusting knob of the pressure switch under test, for adjusting the set pressure degree of the pressure switch under test through rotation or linear motion;

[0027] The hysteresis adjusting unit comprises a second step adjusting device, a hysteresis adjusting knob and a hysteresis adjusting screw, the hysteresis adjusting screw being connected with a hysteresis adjusting end of the pressure switch under test; the second step adjusting device is connected with the second telescopic rod and the hysteresis adjusting screw respectively, and the hysteresis adjusting screw is connected with the hysteresis adjusting knob of the pressure switch under test, for adjusting the hysteresis degree of the pressure switch under test through rotation or linear motion.

[0028] In an embodiment, the support comprises a base for supporting and fixing the clamping unit and the pressure switch under test.

[0029] In an embodiment, the set value adjusting transmission line is connected with the first step adjusting device through the first support rod and the first telescopic rod;

[0030] The hysteresis adjusting transmission line is connected with the second step adjusting device through the second support rod and the second telescopic rod.

[0031] In an embodiment, the clamping unit is horizontally arranged at the lower half of the pressure switch.

[0032] The pressure switch automatic calibration and adjustment platform has the advantages that: through the cooperative work of the main controller, the clamping unit, the pressure adjusting unit and the transmission pipeline, automatic calibration and accurate adjustment of the pressure switch are realized, and the problem that the pressure switch is difficult to be calibrated and adjusted with full automation and high precision in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0033] The utility model will be further described below in combination with the drawings and embodiments, in the drawings,

[0034] Figure 1 It is the pressure switch automatic check adjusting platform structure schematic diagram of the utility model.

[0035] Figure 2 It is the pressure switch automatic check adjusting platform structure schematic diagram of the utility model.

[0036] Figure 3 It is the pressure switch structure schematic diagram of the utility model.

[0037] The following label is as follows:

[0038] 10, support, 11, first support rod, 12, first telescopic rod, 13, second support rod, 14, second telescopic rod, 15, base, 20, main controller, 30, clamping unit, 31, fixed value adjusting unit, 311, fixed value adjusting knob, 312, fixed value adjusting screw rod, 313, pressure transmission device, 314, micro switch, 315, fixed value adjusting end, 316, hysteresis adjusting end, 32, hysteresis adjusting unit, 321, hysteresis adjusting knob, 322, hysteresis adjusting screw rod, 33, clamp, 34, adjusting hand wheel, 40, pressure adjusting unit, 50, pressure transmission pipeline, 51, pressure increasing transmission pipeline, 52, pressure reducing transmission pipeline, 60, adjusting signal transmission line, 61, fixed value adjusting transmission line, 62, hysteresis adjusting transmission line, 70, switch signal transmission line, 80, first interface seat, 90, second interface seat. DETAILED DESCRIPTION

[0039] The utility model will be further described below in combination with the drawings and embodiments, in the drawings,

[0040] As Figure 1 shown, it is the pressure switch automatic check adjusting platform structure schematic diagram of the utility model.

[0041] The technical solution adopted by this utility model to solve its technical problem is: to provide an automatic calibration and adjustment platform for pressure switches, including a support 10 and a main controller 20; and further including:

[0042] The clamping unit 30 is mounted on the bracket 10 and is used to fix the pressure switch being tested.

[0043] The pressure regulating unit 40 is mounted on the bracket 10 and is used to regulate the pressure switch being tested;

[0044] The pressure transmission pipeline 50 is connected between the pressure interface of the main controller 20 and the pressure interface of the pressure switch under test to realize pressure transmission;

[0045] The adjustment signal transmission line 60 is connected between the adjustment signal interface of the main controller 20 and the pressure adjustment unit 40 to transmit the adjustment signal generated by the main controller 20 to the pressure adjustment unit 40 to achieve pressure adjustment.

[0046] The switch signal transmission line 70 is connected between the switch signal interface of the main controller 20 and the switch signal interface of the pressure switch under test to realize the switch signal transmission.

[0047] It should be noted that the pressure switch under test includes a balancing device, a micro switch device, and a pressure transmission device; the balancing device includes left and right sides, and the pressure transmission device is located at the lower left and / or lower right. The upper left is the micro switch, and the upper right is the pressure regulating side, or vice versa; wherein, the pressure regulating side includes a setpoint adjustment terminal and a hysteresis adjustment terminal.

[0048] The pressure regulating side is connected to the regulating signal transmission line 60 via the pressure regulating unit 40 to receive the regulating signal sent by the main controller 20, thereby precisely adjusting the pressure to ensure its stability and accuracy. The micro switch is connected to the switch signal transmission line 70 to detect the trigger state of the pressure switch and transmit the signal to the main controller 20 for real-time monitoring of pressure changes. The pressure transmission pipeline 50 is connected to the pressure transmission device to transmit the pressure regulated by the main controller 20 to the inside of the pressure switch, realizing the pressure transmission and regulation functions.

[0049] The clamping unit 30 of the automatic calibration and adjustment platform of the pressure switch is installed on the support 10, can provide stable clamping force and be flexibly adjusted according to pressure switches of different sizes and models, ensures firm fixation, and avoids errors and mistakes caused by device shaking. The pressure adjustment unit 40 is also arranged on the support 10, and according to preset programs and parameters, accurately increases and decreases the pressure, so that the pressure switch is in different pressure states, and the performance is comprehensively detected. The pressure transmission pipeline 50 connects the main controller 20 and the pressure switch, serves as a key link, ensures accurate and stable transmission of the pressure command. The adjustment signal transmission line 60 connects the main controller 20 and the pressure adjustment unit 40, transmits the adjustment signal, and realizes accurate pressure control. The switch signal transmission line 70 is responsible for the signal interaction between the main controller 20 and the pressure switch, and monitors the on-off state in real time.

[0050] The platform realizes automatic calibration of the pressure switch through integration of various components, from fixation to pressure increase, pressure stabilization, pressure decrease and other operations, without frequent manual intervention, improves efficiency and reduces human error risk. The pressure adjustment unit 40 cooperates with the main controller 20, flexibly adjusts the pressure according to the preset program, cooperates with the switch signal monitoring, and comprehensively detects the performance. The platform has universality and flexibility, and is suitable for various types of pressure switches. Only the parameters and programs of the main controller 20 need to be adjusted. In addition, the platform can expand data recording and analysis functions, automatically store calibration data, and help long-term tracking and evaluation of the performance of the pressure switch.

[0051] As shown in Figure 2 Further, the pressure adjustment unit 40 includes a constant value adjustment unit 31 and a hysteresis adjustment unit 32, and the support 10 includes:

[0052] The first support rod 11 and the first telescopic rod 12 connected thereto, the constant value adjustment unit 31 is arranged on the first telescopic rod 12;

[0053] The second support rod 13 and the second telescopic rod 14 connected thereto, the hysteresis adjustment unit 32 is arranged on the second telescopic rod 14.

[0054] Further, the clamping unit 30 includes:

[0055] The clamp 33 can contact the pressure switch to be tested to realize the clamping function;

[0056] The adjustment hand wheel 34 is connected with the clamp 33 and can adjust the clamping force of the clamp 33 by rotating, so as to fix the pressure switch to be tested.

[0057] It should be noted that the structure of the support 10 is formed by the vertical connection of the first support rod 11 and the first telescopic rod 12 to form a longitudinal adjustment module, the first telescopic rod 12 is internally provided with an electric drive mechanism and is installed with a fixed value adjustment unit 31 for applying a set pressure value to the pressure switch; the second support rod 13 and the second telescopic rod 14 are arranged in the side and the end thereof is installed with a hysteresis adjustment unit 32, which is driven by a stepping motor to dynamically adjust the pressure hysteresis value. The two support rods are fixed to the platform base through an adjustable base 15, and a horizontal calibration instrument is provided to ensure stability. The clamping unit 30 adopts a symmetrical clamp with an inner anti-slip silica gel layer to adapt to pressure switches of different diameters.

[0058] Further, the pressure transmission pipeline 50 includes:

[0059] The pressure transmission pipeline 51 is connected to the pressure boost interface of the main controller 20 and the pressure boost interface of the pressure switch under test, for transmitting the pressure of the boosted gas to the pressure boost interface of the pressure switch under test to increase the pressure;

[0060] The pressure transmission pipeline 52 is connected to the pressure reduction interface of the main controller 20 and the pressure reduction interface of the pressure switch under test, for transmitting the pressure of the reduced gas to the pressure reduction interface of the pressure switch under test to reduce the pressure;

[0061] At the same time, the pressure transmission pipeline 51 or the pressure transmission pipeline 52 is selected for pressure transmission.

[0062] It should be noted that the pressure transmission pipeline 51 connects the pressure boost interface of the main controller 20 and the pressure boost interface of the pressure switch under test. When the pressure is boosted, the main controller 20 transmits the pressure of the gas to the pressure switch through the pipeline to increase the pressure and simulate a high-pressure environment.

[0063] The pressure transmission pipeline 52 connects the pressure reduction interface of the main controller 20 and the pressure reduction interface of the pressure switch under test. When the pressure is reduced, the main controller 20 transmits the pressure of the gas through the pipeline to reduce the pressure.

[0064] When the pressure is checked, the platform only selects one of the pressure transmission pipeline 51 or the pressure transmission pipeline 52 to work at the same time, which is controlled by the logic of the main controller 20 to avoid system disorder and inaccurate data caused by simultaneous pressure increase and reduction, and to ensure the order, accuracy and safety of the check.

[0065] Further, it further includes a first interface seat 80 and a second interface seat 90;

[0066] The pressure transmission pipeline 51 is connected to the pressure boost interface of the pressure switch under test through the first interface seat 80;

[0067] The pressure transmission pipeline 52 is connected to the pressure reduction interface of the pressure switch under test through the second interface seat 90.

[0068] It should be noted that during the pressure boost check, the main controller 20 starts the pressure boost program, and the gas pressure is transmitted to the pressure boost pressure interface of the pressure switch being tested through the pressure boost transmission pipeline 51 and the first interface seat 80 after pressure boost, realizing pressure increase; during the pressure reduction check, the main controller 20 performs pressure reduction operation, and the gas pressure is transmitted to the pressure reduction pressure interface of the pressure switch being tested through the pressure reduction transmission pipeline 52 and the second interface seat 90 after pressure reduction, realizing pressure reduction. During the entire check process, only one of pressure boost or pressure reduction is performed at the same time, which is realized by the control logic of the main controller 20, preventing the system from being disorderly and the data from being inaccurate due to simultaneous pressure boost and pressure reduction, and ensuring that the check process is orderly, accurate and safe. The pressure boost and pressure reduction transmission pipeline 52 cooperates with the corresponding interface seat to accurately simulate the pressure change of the pressure switch in actual working conditions, so that the pressure switch experiences complete pressure cycle, detects performance comprehensively, improves check accuracy, ensures reliable work of the pressure switch, and eliminates safety hazards. At the same time, only one transmission pipeline is used at the same time, avoiding mutual interference between the pressure boost and pressure reduction processes, reducing repeated operations, and the main controller 20 quickly switches the pipeline according to the preset program, realizing continuous and stable adjustment of pressure, greatly shortening the check period, improving the check efficiency, meeting the demand for rapid check in production, maintenance and other aspects, and improving the overall work efficiency and production progress. In addition, the first interface seat 80 and the second interface seat 90 ensure that the pressure boost and pressure reduction transmission pipeline 52 is tightly connected with the pressure switch interface, effectively preventing gas leakage, ensuring the sealing and reliability of the system, the main controller 20 accurately controls the pressure, the pipeline stably transmits, the pressure change is stable and controllable, avoiding damage to the pressure switch, and prolonging the service life.

[0069] Further, the adjustment signal transmission line 60 includes:

[0070] The constant value adjustment transmission line 61 is connected between the constant value adjustment signal interface of the main controller 20 and the constant value adjustment unit 31, and is used to transmit the constant value adjustment signal generated by the main controller 20 to the constant value adjustment unit 31, so as to realize constant value adjustment of the pressure;

[0071] The hysteresis adjustment transmission line 62 is connected between the hysteresis adjustment signal interface of the main controller 20 and the hysteresis adjustment unit 32, and is used to transmit the hysteresis adjustment signal generated by the main controller 20 to the hysteresis adjustment unit 32, so as to realize hysteresis adjustment of the pressure.

[0072] It should be noted that the set value regulation transmission line 61 is connected between the set value regulation signal interface of the main controller 20 and the set value regulation unit 31, for transmitting the set value regulation signal generated by the main controller 20 to the set value regulation unit 31, so as to realize the set value regulation of the pressure; the hysteresis regulation transmission line 62 is connected between the hysteresis regulation signal interface of the main controller 20 and the hysteresis regulation unit 32, for transmitting the hysteresis regulation signal generated by the main controller 20 to the hysteresis regulation unit 32, so as to realize the hysteresis regulation of the pressure. In this way, through the adjustment signal transmission line 60, the main controller 20 can accurately control the pressure regulation unit 40, so as to realize the accurate set value regulation and hysteresis regulation of the pressure, and ensure the stability and reliability of the pressure switch under different working conditions.

[0073] As shown in Figure 3 Further, the set value regulation unit 31 comprises a first step regulator, a set value regulation knob 311 and a set value regulation screw 312, the set value regulation screw 312 being connected with the set value regulation end of the pressure switch under test; the first step regulator is connected with the first telescopic rod 12 and the set value regulation screw 312 respectively, and the set value regulation screw 312 is connected with the set value regulation knob 311 of the pressure switch under test, for adjusting the set pressure degree of the pressure switch under test through rotation or linear motion;

[0074] The hysteresis regulation unit 32 comprises a second step regulator, a hysteresis regulation knob 321 and a hysteresis regulation screw 322, the hysteresis regulation screw 322 being connected with the hysteresis regulation end of the pressure switch under test; the second step regulator is connected with the second telescopic rod 14 and the hysteresis regulation screw 322 respectively, and the hysteresis regulation screw 322 is connected with the hysteresis regulation knob 321 of the pressure switch under test, for adjusting the hysteresis degree of the pressure switch under test through rotation or linear motion.

[0075] It should be noted that the pressure switch under test comprises a balance device, a micro switch device and a pressure conduction device; the balance device comprises left and right sides, and the pressure conduction device 313 is arranged at the lower left and / or lower right. The upper left is the micro switch, and the upper right is the pressure regulation side, or the upper left is the micro switch 314, and the upper right is the pressure regulation side; wherein the pressure regulation side comprises a set value regulation end 315 and a hysteresis regulation end 316. The hysteresis regulation end 316 is the end point of the limiting rod above the balance device, as shown in Figure 3 B1 and B2 are the adjustment points of the limiting rod LE, VE is the hysteresis regulation knob, and VP is the set value regulation knob. The pressure conduction device is a bellows.

[0076] The working principle of the pressure switch is as follows: the pressure from the medium acts upward on the bellows, the flexible bellows causes the displacement of the force balance device LP, and the fixed value adjusting unit 31 is equipped with an elastic element RP for adjusting the set value. When the force from the bellows is less than the force exerted by the spring, the operating rod promotes the micro switch 314 to be in the action state; as the force from the bellows continuously increases, once it exceeds the force exerted by the spring, the micro switch 314 will be reset to the released state. In some embodiments, it can also be that when the force from the bellows is less than the force exerted by the spring, the operating rod promotes the micro switch to be in the released state; as the force from the bellows continuously increases, once it exceeds the force exerted by the spring, the micro switch will be reset to the action state.

[0077] After the first stepper regulator receives the adjustment signal from the main controller through the fixed value adjustment transmission line, it drives the fixed value adjustment knob 311 to rotate in the required direction (clockwise for pressure increase, counterclockwise for pressure decrease). The knob 311 drives the fixed value adjustment screw 312 to rotate and convert into linear motion, changing the vertical relative position of the fixed value adjustment end to adjust the set pressure of the pressure switch. During this period, the elastic element buffers the impact and provides feedback force to ensure tight connection. After reaching the position, the first stepper regulator stops driving. The elastic element IP is also used to display the pressure change and adjustment state.

[0078] After the second stepper regulator receives the adjustment signal from the main controller through the hysteresis adjustment transmission line, it drives the hysteresis adjustment knob 321 to rotate in the required direction (clockwise for pressure increase, counterclockwise for pressure decrease). The knob 321 drives the hysteresis adjustment screw 322 to rotate and convert into linear motion, changing the vertical relative position of the hysteresis adjustment end to adjust the set pressure of the pressure switch. During this period, the elastic element buffers the impact and provides feedback force to ensure tight connection. After reaching the position, the second stepper regulator stops driving. The elastic element IE is used to display the pressure change and adjustment state.

[0079] When performing pressure verification, the main controller 20 sends an adjustment signal to the pressure adjustment unit 40 through the adjustment signal transmission line 60, thereby achieving precise regulation of the pressure. At the same time, the pressure transmission pipeline 50 is responsible for transmitting the pressure adjusted by the main controller 20 to the pressure switch under test, and the switch signal transmission line 70 is used to transmit the signal of the pressure switch under test to the main controller 20, realizing real-time feedback of the signal.

[0080] In a specific embodiment, the adjuster is composed of a motor, a gear assembly and an encoder disk. The main controller 20 receives the calibration adjustment command and controls the motor to rotate forward and backward. The motor provides rotational drive, and the current measurement module collects the motor operating current to determine whether the motor is stalled by the current size. When stalled, the motor stops immediately to prevent the pressure switch screw from being twisted. The gear assembly reduces the motor rotation speed to avoid excessive adjustment. The encoder disk feeds back the rotary drill bit position to achieve precise angle control.

[0081] In normal calibration, the main controller 20 receives the calibration platform control command, controls the motor to rotate forward and backward and drives the rotary head to rotate, and controls the rotation direction of the pressure switch screw. The current measurement module feeds back the motor driving current in real time. When the screw is twisted too much, the current changes suddenly, and the motor stops rotating at this time to avoid damage. The encoder disk accurately feeds back the rotary head position. In fine adjustment, the calibration platform sends a command to the main controller 20 to accurately control the rotary head to rotate a certain angle each time, so that the screw position accurately corresponds to the set pressure value.

[0082] The adjustment process is as follows:

[0083] The pressure switch automatic adjustment platform is used to adjust the pressure set value and the back-lash adjustment screw 322 of the pressure switch and is integrated on the platform. The connection system of the pressure switch automatic calibration tool is as follows: After the calibration platform sets the pressure set value and the back-lash set value, the pressure is gradually increased according to the range setting value until the switch acts, and the action value P1 is captured. After unloading, the pressure is re-pressurized to the set pressure value P. If the captured action value P1 is less than the set pressure value P, the screw needs to be rotated clockwise, and the platform sends a corresponding signal to the adjustment platform. If P1 is greater than P, the screw needs to be rotated counterclockwise. After the adjustment is completed, the pressure is unloaded and re-pressurized to verify the screw position. If there is an error, the action pressure and the set value are compared, and the screw is fine-tuned clockwise or counterclockwise. The pressure is repeatedly pressurized and calibrated until the screw position corresponds to the set pressure. In fine adjustment, the adjustment platform enters the step mode, and the calibration platform sends a pulse signal. Each pulse makes the adjustment device step one unit. The step unit can be set to 1 / 8 turn, 1 / 4 turn or 1 turn on the upper computer interface.

[0084] Further, the support 10 includes a base 15 for supporting and fixing the clamping unit 30 and the pressure switch to be tested.

[0085] Further, the set value adjustment transmission line 61 is connected with the first step adjuster through the first support rod 11 and the first telescopic rod 12.

[0086] The back-lash adjustment transmission line 62 is connected with the second step adjuster through the second support rod 13 and the second telescopic rod 14.

[0087] Further, the clamping unit 30 is horizontally arranged at the lower half of the pressure switch.

[0088] The utility model provides a pressure switch automatic check and adjust platform, including support 10 and main control ware 20, still include: clamping unit 30, set up in support 10 and be used for fixing the pressure switch of being examined, pressure regulation unit 40, set up in support 10 and be used for the mediation to pressure switch of being examined, pressure transmission pipeline 50, connect in pressure interface of main control ware 20 with pressure interface between pressure switch of being examined for realizing pressure transmission, adjust signal transmission line 60, connect in the regulation signal interface of main control ware 20 with pressure regulation unit 40 between for the regulation signal transmission of main control ware 20 generates to pressure regulation unit 40 to realize pressure regulation, switch signal transmission line 70, connect in switch signal interface of main control ware 20 with switch signal interface between pressure switch of being examined to realize switch signal transmission. Through the cooperative work of main control ware 20 and clamping unit 30, pressure regulation unit 40 and transmission pipeline, realized the automatic check and accurate regulation of pressure switch, solved the problem that pressure switch is difficult to carry out full automatic high accuracy check and regulation in the prior art.

Claims

1. An automatic calibration and adjustment platform for pressure switches, characterized in that, Includes a bracket and a main controller; also includes: A clamping unit is mounted on the bracket and used to fix the pressure switch under test; A pressure regulating unit is mounted on the bracket and is used to regulate the pressure switch under test; A pressure transmission pipeline is connected between the pressure interface of the main controller and the pressure interface of the pressure switch under test to realize pressure transmission. An adjustment signal transmission line is connected between the adjustment signal interface of the main controller and the pressure adjustment unit to transmit the adjustment signal generated by the main controller to the pressure adjustment unit to achieve pressure adjustment. A switch signal transmission line is connected between the switch signal interface of the main controller and the switch signal interface of the pressure switch under test to realize switch signal transmission.

2. The automatic pressure switch calibration and adjustment platform according to claim 1, characterized in that, The pressure regulating unit includes a setpoint regulating unit and a hysteresis regulating unit, and the bracket includes: A first support rod and a first telescopic rod connected thereto, wherein the setpoint adjustment unit is disposed on the first telescopic rod; The second support rod and the second telescopic rod connected thereto, wherein the hysteresis adjustment unit is located on the second telescopic rod.

3. The automatic pressure switch calibration and adjustment platform according to claim 2, characterized in that, The clamping unit includes: The clamp can contact the pressure switch being tested to achieve a clamping function; Adjust the handwheel, which is connected to the clamp and can be rotated to adjust the clamping force of the clamp to fix the pressure switch under test.

4. The automatic pressure switch calibration and adjustment platform according to claim 3, characterized in that, The pressure transmission pipeline includes: A pressurization transmission pipeline is connected to the pressurization pressure interface of the main controller to transmit the pressurized gas pressure to the pressurization pressure interface of the pressure switch under test, so as to increase the pressure. A pressure-reducing transmission pipeline is connected to the pressure-reducing interface of the main controller to transmit the reduced gas pressure to the pressure-reducing interface of the pressure switch under test, so as to reduce the pressure. At the same time, pressure is transmitted through either the pressurization transmission pipeline or the depressurization transmission pipeline.

5. The automatic pressure switch calibration and adjustment platform according to claim 4, characterized in that, It also includes a first interface socket and a second interface socket; The booster transmission pipeline is connected to the booster pressure port of the pressure switch under test through the first interface socket; The pressure reduction transmission pipeline passes through the pressure reduction interface of the pressure switch under test via the second interface seat.

6. The automatic pressure switch calibration and adjustment platform according to claim 5, characterized in that, The regulating signal transmission line includes: A setpoint adjustment transmission line is connected between the setpoint adjustment signal interface of the main controller and the setpoint adjustment unit, and is used to transmit the setpoint adjustment signal generated by the main controller to the setpoint adjustment unit to realize the setpoint adjustment of pressure. A hysteresis regulation transmission line is connected to the hysteresis regulation signal interface of the main controller and the hysteresis regulation unit, and is used to transmit the hysteresis regulation signal generated by the main controller to the hysteresis regulation unit to realize pressure hysteresis regulation.

7. The automatic pressure switch calibration and adjustment platform according to claim 6, characterized in that, The setpoint adjustment unit includes a first step adjuster, a setpoint adjustment knob, and a setpoint adjustment screw. The setpoint adjustment screw is connected to the setpoint adjustment end of the pressure switch under test. The first step adjuster is connected to the first telescopic rod and the setpoint adjustment screw respectively. The setpoint adjustment screw is connected to the setpoint adjustment knob of the pressure switch under test and is used to adjust the set pressure of the pressure switch under test by rotation or linear motion. The hysteresis adjustment unit includes a second step adjuster, a hysteresis adjustment knob, and a hysteresis adjustment screw. The hysteresis adjustment screw is connected to the hysteresis adjustment end of the pressure switch under test. The second step adjuster is connected to the second telescopic rod and the hysteresis adjustment screw respectively. The hysteresis adjustment screw is connected to the hysteresis adjustment knob of the pressure switch under test and is used to adjust the hysteresis of the pressure switch under test by rotation or linear motion.

8. The automatic pressure switch calibration and adjustment platform according to claim 7, characterized in that, The bracket includes a base for supporting and fixing the clamping unit and the pressure switch being tested.

9. The automatic pressure switch calibration and adjustment platform according to claim 8, characterized in that, The setpoint adjustment transmission line is connected to the first step advance regulator through the first support rod and the first telescopic rod; The hysteresis adjustment transmission line is connected to the second stepper regulator via the second support rod and the second telescopic rod.

10. The automatic pressure switch calibration and adjustment platform according to claim 9, characterized in that, The clamping unit is horizontally positioned in the lower half of the pressure switch.

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