CN213715014U

CN213715014U - Automatic overflow test device

Info

Publication number: CN213715014U
Application number: CN202022477321.4U
Authority: CN
Inventors: 刘科亮; 余丹艳; 施文棋; 张燕婷; 蔡友志
Original assignee: Xiamen Products Quality Supervision & Inspection Institute
Current assignee: Xiamen Products Quality Supervision & Inspection Institute
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-07-16
Anticipated expiration: 2030-10-30

Abstract

The utility model discloses an automatic overflow test device belongs to test technical field, and automatic overflow test device includes the sample platen that is used for bearing the examination sample that awaits measuring, and automatic overflow test device still includes water injection mechanism, delivery pipe, funnel, height adjusting mechanism and support, and the end of intaking of delivery pipe is linked together with the play water end of water injection mechanism, and on the water inlet of funnel was located to the play water end of delivery pipe, the delivery port of funnel was located the top of sample platen, funnel and support looks rigid coupling, height adjusting mechanism can drive the support and be reciprocating up-and-down motion. The utility model discloses an automatic overflow test device can realize automatic overflow test convenient and reliable, guarantees that test data is more accurate reliable.

Description

Automatic overflow test device

Technical Field

The utility model relates to a test technical field especially relates to an automatic overflow test device.

Background

The automatic overflow test device meets the requirements of GB4706.1-2005 standard 15.2 and GB4706.19 and GB4706.30, can uniformly pour 1% sodium chloride solution (15% of the container capacity, or 0.25L of solution with the same concentration, the two are more) for test into a container of a tested device within 1 minute, and when the automatic overflow test device is used for a liquid heater to carry out a moisture resistance test, the phenomena that water is accidentally splashed out of the container or the water in the container is too full when the structure of a test product is used in normal use operation, the water is boiled and overflowed when the automatic overflow test device is electrified, and whether the overflowed water can not influence the electrical insulation performance of the container can be ensured.

The overflow test is that most domestic electric appliance laboratories are operated in the following modes: 1. preparing a liquid holding cup by a manual measuring cup, slowly pouring a test sample by hands, and carrying out an overflow test; 2. manually preparing the liquid containing cup, and manually controlling the opening and closing of the valve through a device with a valve to perform an overflow test; 3. the liquid is prepared manually, the PLC controls time, the human-computer interface is operated, and the metering pump or the peristaltic pump controls flow precision to perform an overflow test. There are certain drawbacks and deficiencies to the above approaches: neither item 1 nor item 2 can control the accuracy of the 1 minute time and the accuracy of the flow rate of the poured water. The 3 rd mode can be well controlled for 1 minute, but the pouring process cannot be uniformly and slowly filled into the container because of the principle of a metering pump or a peristaltic pump: the device consists of a driving motor, a gear box transmission adjusting mechanism and a pump head. The diaphragm (piston) will be sucked by the delivered fluid during the first half of the stroke and will expel the fluid out of the pump head during the second half. The water adding process in the mode has certain impact force and certain interval, and water cannot slowly overflow but splashes out of the container in a large area, which is not in accordance with the requirements of test standards and is not in accordance with the actual daily normal use. By combining the methods, a novel automatic overflow test device meeting the requirements of test standards is developed.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect of the prior art, the utility model aims to solve the technical problem that an automatic overflow test device is proposed adopts sample platen, water injection mechanism, delivery pipe, funnel, height adjusting mechanism and support to constitute, makes automatic overflow test device can realize automatic overflow test convenient and reliable, guarantees that test data is more accurate reliable.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a pair of automatic overflow test device, include the sample platen that is used for bearing the sample that awaits measuring, automatic overflow test device still includes water injection mechanism, delivery pipe, funnel, height adjusting mechanism and support, and the end of intaking of delivery pipe is linked together with the play water end of water injection mechanism, and on the water inlet of funnel was located to the play water end of delivery pipe, the delivery port of funnel was located the top of sample platen, funnel and support looks rigid coupling, height adjusting mechanism can drive the support and be reciprocating elevating movement.

The utility model discloses preferred technical scheme lies in, and water injection mechanism includes water injection jar, ball screw is vice, direction mechanism group and tie-beam, and the flexible rod end of water injection jar passes through the nut end fixed connection that tie-beam and ball screw are vice, and the guide holder end and the tie-beam fixed connection of direction mechanism group, the play water end of water injection jar and the end of intaking of delivery pipe are linked together.

The utility model discloses preferred technical scheme lies in, and the bottom of sample platen is fixed with angle adjustment mechanism to the inclination of adjusting the sample platen.

The utility model discloses preferred technical scheme lies in, height adjusting mechanism is including heightening hand wheel, screw rod, guide arm and support, the one end of screw rod and the bottom rotatable coupling of support, and the other end of screw rod passes the top of support and support in proper order and heightens hand wheel fixed connection, the one end of guide arm and the bottom fixed connection of support, and the other end of guide arm passes the top fixed connection of support and support.

The utility model discloses preferred technical scheme lies in, angle adjustment mechanism includes rotation axis, two bearing frames, adjusting hand wheel, calibrated scale and pointer, and the sample platen is fixed on the rotation axis, the both ends of rotation axis respectively with a bearing frame rotatable coupling, adjusting hand wheel's one end and a bearing frame threaded connection, another bearing frame and calibrated scale looks rigid coupling, the pointer fix the tip at the rotation axis and with calibrated scale looks adaptation.

The utility model discloses preferred technical scheme lies in, is fixed with the laser instrument on the support, and the signal transmission end of laser instrument is corresponding the sample platen to realize accurate counterpoint to the sample water injection.

The utility model discloses preferred technical scheme lies in, automatic overflow test device still includes automatically controlled module, the signal end of water injection mechanism and the signal end electric connection of automatically controlled module.

The utility model discloses preferred technical scheme lies in, has seted up a plurality of locating holes on the sample platen, and the joint has the shelves pole that is used for fixing a position the sample in the locating hole.

The utility model discloses preferred technical scheme lies in, automatic overflow test device still includes basin, storage water tank and drain pipe, and the lateral wall at the basin is fixed to the bearing frame, and the uncovered of basin is served in to the sample platen is arranged in, and the end of intaking of storage water tank is linked together with the basin, and the play water end and the drain pipe of storage water tank are linked together.

The utility model has the advantages that:

the utility model provides an automatic overflow test device, water injection mechanism can pour into rivers into the funnel through the delivery pipe, and rivers can bear its structure of sample such as liquid heater that liquid spilled over can guarantee whether the liquid that makes and spill over can not influence the electrical insulation of utensil on the sample that drips through the funnel in normal use. Wherein, automatic overflow test device control water injection mechanism pours into the funnel through the delivery pipe and realizes the constant velocity ration overflow test, but sample platen rotation angle, the position of accessible height adjusting mechanism upper and lower regulation support to the distance of adjusting funnel and sample, thereby satisfy the sample test of equidimension not, reduced equipment in the past and relied on artifical quantity cup to pour liquid or artifical governing valve size control liquid flow and the error that causes easily, the test result is more accurate reliable. Through the process, the automatic overflow test device can conveniently and reliably realize automatic overflow test, and test data are more accurate and reliable.

Drawings

Fig. 1 is a schematic view of an overall structure of an automatic overflow testing apparatus according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of an automatic overflow testing device according to an embodiment of the present invention;

fig. 3 is a schematic view of a partial structure of an automatic overflow testing apparatus according to an embodiment of the present invention.

In the figure:

1. a sample platen; 2. a water injection mechanism; 21. a water injection cylinder; 22. a ball screw pair; 23. a guide mechanism group; 24. a connecting beam; 3. a water supply pipe; 4. a funnel; 5. a height adjustment mechanism; 51. a height-adjusting hand wheel; 52. a screw; 53. a guide bar; 54. a support; 6. a support; 7. an angle adjusting mechanism; 71. a rotating shaft; 72. a bearing seat; 73. adjusting a hand wheel; 74. a dial scale; 75. a pointer; 8. a laser; 9. an electric control module; 10. a water tank; 11. a water storage tank; 12. a drain pipe; 20. positioning holes; 30. a gear lever.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the automatic overflow testing apparatus provided in this embodiment includes a sample platen 1 for carrying a sample to be tested. In order to ensure that the automatic overflow test device can conveniently and reliably realize the automatic overflow test, the test data is more accurate and reliable. Further, automatic overflow test device still includes water injection mechanism 2, delivery pipe 3, funnel 4, height adjusting mechanism 5 and support 6, and the end of intaking of delivery pipe 3 is linked together with the play water end of water injection mechanism 2, and the play water end of delivery pipe 3 is located on the water inlet of funnel 4, and the delivery port of funnel 4 is located the top of sample platen 1, and funnel 4 and support 6 looks rigid coupling, and height adjusting mechanism 5 can drive support 6 and do reciprocating lift motion. The water injection mechanism 2 can inject water flow into the funnel 4 through the water supply pipe 3, the water flow drops on a sample through the funnel 4, and whether the structure of the sample such as a liquid heater which can bear liquid overflow in normal use can ensure that the overflowing liquid can not influence the electrical insulation of the appliance or not is checked. Wherein, automatic overflow test device control water injection mechanism 2 pours into funnel 4 through delivery pipe 3 and realizes the constant velocity ration overflow test, but sample platen 1 is 0 ~ 20, funnel 4 standard internal diameter 8mm, the position of support 6 is adjusted from top to bottom to accessible altitude mixture control mechanism 5, with the distance of adjusting funnel 4 and sample, thereby satisfy the sample test of equidimension not, the equipment dependence artifical dosage cup of having reduced pours liquid or artifical adjusting valve size control liquid flow and the error that causes easily, the test result is more accurate reliable. Through the process, the automatic overflow test device can conveniently and reliably realize automatic overflow test, and test data are more accurate and reliable.

Preferably, the water injection mechanism 2 comprises a water injection cylinder 21, a ball screw pair 22, a guide mechanism group 23 and a connecting beam 24, wherein a telescopic rod end of the water injection cylinder 21 is fixedly connected with a nut end of the ball screw pair 22 through the connecting beam 24, a guide seat end of the guide mechanism group 23 is fixedly connected with the connecting beam 24, and a water outlet end of the water injection cylinder 21 is communicated with a water inlet end of the water supply pipe 3. The ball screw pair 22 performs screw transmission to drive the telescopic rod end of the water injection cylinder 21 to reciprocate along with the connecting beam 24, so as to control the water injection flow of the water injection cylinder 21, and the guiding mechanism group 23 is used for guiding and balancing. The driving speed of the pulse control stepping motor is automatically calculated by an input conversion formula (the flow is equal to the stroke of the ball screw and the inner sectional area of the water injection cylinder), the water injection speed of the water injection cylinder 21 is pushed by the ball screw pair 22, 15% of the rated capacity of a sample container to be tested or 0.25L of saline water with the same concentration (the two are more) is uniformly and slowly injected into the sample container within 1 minute, and the data is accurate and reliable.

Preferably, an angle adjusting mechanism 7 is fixed to the bottom of the sample platen 1 to adjust the tilt angle of the sample platen 1. The inclination angle of the sample bedplate 1 can be adjusted by the angle adjusting mechanism 7 so as to simulate the condition of uneven table top frequently encountered in the actual use environment of a sample to be tested and ensure more accurate and reliable test data.

Preferably, the height adjusting mechanism 5 comprises a height adjusting hand wheel 51, a screw rod 52, a guide rod 53 and a support 54, wherein one end of the screw rod 52 is rotatably connected with the bottom of the support 54, the other end of the screw rod 52 sequentially penetrates through the support 6 and the top of the support 54 to be fixedly connected with the height adjusting hand wheel 51, one end of the guide rod 53 is fixedly connected with the bottom of the support 54, and the other end of the guide rod 53 penetrates through the support 6 to be fixedly connected with the top of the support 54. An operator can drive the screw rod 52 to rotate by rotating the heightening hand wheel 51, so as to drive the bracket 6 to perform spiral transmission along the axial direction of the screw rod 52, the guide rod 53 is used for supporting and guiding the reciprocating lifting motion of the bracket 6, and the support 54 is used for supporting and positioning the screw rod 52 and the guide rod 53.

Preferably, the angle adjusting mechanism 7 includes a rotating shaft 71, two bearing seats 72, an adjusting handwheel 73, a dial 74 and a pointer 75, the sample platen 1 is fixed on the rotating shaft 71, two ends of the rotating shaft 71 are respectively rotatably connected with one bearing seat 72, one end of the adjusting handwheel 73 is in threaded connection with one bearing seat 72, the other bearing seat 72 is fixedly connected with the dial 74, and the pointer 75 is fixed at the end of the rotating shaft 71 and is matched with the dial 74. An operator can adjust the degree of tightness of fit between the rotating shaft 71 and the bearing seat 72 by rotating the adjusting hand wheel 73, the rotating shaft 71 can be rotated during loosening, the inclination angle of the sample platen 1 can be known by reading the moving position of the pointer 75 on the dial 74, and after the rotating angle is adjusted, the rotating hand wheel 73 is rotated to be tightened to limit rotation of the rotating shaft 71. Wherein, the bearing seat 72 plays a role of supporting and limiting. Through the structure, the angle adjusting mechanism 7 can accurately and reliably adjust the inclination angle of the sample bedplate 1.

Preferably, a laser 8 is fixed on the support 6, and a signal emitting end of the laser 8 corresponds to the sample platen 1 so as to realize accurate alignment for water injection of the sample. The laser 8 can be accurately aligned to the center of the sample, so that the water flow dripping process is more concentrated and accurate, and the liquid overflow process is more stable.

Preferably, the automatic overflow test device further comprises an electric control module 9, and the signal end of the water injection mechanism 2 is electrically connected with the signal end of the electric control module 9. An operator can set the water injection flow per minute and the time for 1 minute through a human-computer interface of the electric control module 9, a PLC (programmable logic controller) of the electric control module 9 automatically calculates the pulse control stepping motor driving speed through an input conversion formula (the flow is equal to the stroke of the ball screw and the inner sectional area of the water injection cylinder), and the data is more accurate and reliable.

Preferably, the sample platen 1 is provided with a plurality of positioning holes 20, and a stop rod 30 for positioning the sample is clamped in the positioning holes 20. The locating hole 20 is used for location assembly shelves pole 30, and shelves pole 30 is used for the location sample, avoids the sample to take place the skew, guarantees that the water injection process is more steady, and the water injection position is more accurate, and then guarantees that the test result is more accurate reliable.

Preferably, the automatic overflow test device further comprises a water tank 10, a water storage tank 11 and a water discharge pipe 12, wherein the bearing seat 72 is fixed on the side wall of the water tank 10, the sample bedplate 1 is arranged on the open end of the water tank 10, the water inlet end of the water storage tank 11 is communicated with the water tank 10, and the water outlet end of the water storage tank 11 is communicated with the water discharge pipe 12. The tank 10 is used for receiving liquid overflowing from the sample to the sample platen 1, the storage tank 11 is used for storing liquid discharged from the tank 10, and the drain pipe 12 is used for discharging redundant liquid in the storage tank 11. Through the process, the drainage is ensured to be smooth, so that the overflow test process is ensured to be smoothly carried out.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides an automatic overflow test device, includes sample platen (1) that is used for bearing the sample that awaits measuring, its characterized in that:

the automatic overflow test device also comprises a water injection mechanism (2), a water supply pipe (3), a funnel (4), a height adjusting mechanism (5) and a bracket (6);

the water inlet end of the water supply pipe (3) is communicated with the water outlet end of the water injection mechanism (2), the water outlet end of the water supply pipe (3) is arranged on the water inlet of the funnel (4), the water outlet of the funnel (4) is positioned above the sample bedplate (1), the funnel (4) is fixedly connected with the support (6), and the height adjusting mechanism (5) can drive the support (6) to do reciprocating lifting motion.

2. An automatic overflow test device according to claim 1, characterized in that:

the water injection mechanism (2) comprises a water injection cylinder (21), a ball screw pair (22), a guide mechanism group (23) and a connecting beam (24);

the telescopic rod end of the water injection cylinder (21) is fixedly connected with the nut end of the ball screw pair (22) through the connecting beam (24), the guide seat end of the guide mechanism group (23) is fixedly connected with the connecting beam (24), and the water outlet end of the water injection cylinder (21) is communicated with the water inlet end of the water supply pipe (3).

3. An automatic overflow test device according to claim 1, characterized in that:

an angle adjusting mechanism (7) is fixed at the bottom of the sample bedplate (1) to adjust the inclination angle of the sample bedplate (1).

4. An automatic overflow test device according to claim 1, characterized in that:

the height adjusting mechanism (5) comprises a height adjusting hand wheel (51), a screw rod (52), a guide rod (53) and a support (54);

one end of the screw rod (52) is rotatably connected with the bottom of the support (54), the other end of the screw rod (52) sequentially penetrates through the support (6) and the top of the support (54) and is fixedly connected with the height-adjusting hand wheel (51), one end of the guide rod (53) is fixedly connected with the bottom of the support (54), and the other end of the guide rod (53) penetrates through the support (6) and is fixedly connected with the top of the support (54).

5. An automatic overflow testing device according to claim 3, characterized in that:

the angle adjusting mechanism (7) comprises a rotating shaft (71), two bearing seats (72), an adjusting hand wheel (73), a dial (74) and a pointer (75);

the sample platen (1) is fixed on the rotating shaft (71), two ends of the rotating shaft (71) are respectively rotatably connected with one bearing seat (72), one end of the adjusting hand wheel (73) is in threaded connection with one bearing seat (72), the other bearing seat (72) is fixedly connected with the dial (74), and the pointer (75) is fixed at the end part of the rotating shaft (71) and is matched with the dial (74).

6. An automatic overflow test device according to claim 1, characterized in that:

a laser (8) is fixed on the bracket (6);

and the signal transmitting end of the laser (8) corresponds to the sample bedplate (1) so as to realize accurate alignment for sample water injection.

7. An automatic overflow test device according to claim 1, characterized in that:

the automatic overflow test device also comprises an electric control module (9);

and the signal end of the water injection mechanism (2) is electrically connected with the signal end of the electric control module (9).

8. An automatic overflow test device according to claim 1, characterized in that:

a plurality of positioning holes (20) are formed in the sample bedplate (1);

a stop lever (30) for positioning a sample is clamped in the positioning hole (20).

9. An automatic overflow testing device according to claim 5, characterized in that:

the automatic overflow test device also comprises a water tank (10), a water storage tank (11) and a water drainage pipe (12);

the bearing seat (72) is fixed on the side wall of the water tank (10), the sample table plate (1) is arranged on the open end of the water tank (10), the water inlet end of the water storage tank (11) is communicated with the water tank (10), and the water outlet end of the water storage tank (11) is communicated with the water discharge pipe (12).