Sample constant weight detection box and detection device

Abstract

The utility model relates to the field of constructional engineering raw material detection, in particular to a sample constant weight detection box and a detection device, the sample constant weight detection box comprises a drying box, an accommodating space is arranged in the drying box, a pressure measuring device is arranged outside the drying box, a weighing tray is arranged in the accommodating space, and the weighing tray and the box wall of the drying box are arranged at an interval; the weighing tray is provided with a force guide rod which penetrates through the box wall, one end of the force guide rod is connected with the pressure measuring device, and the other end of the force guide rod is connected with the weighing tray; the weight change of the test sample can be monitored in real time, so that the weighing error caused by personnel operation is avoided, and the manual operation process is reduced; the detection device comprises a control unit, a drying oven system and a display unit, and further comprises a sample constant weight detection box, the control unit is connected with the pressure measurement device, the drying oven system is connected with the drying box, and the drying oven system and the display unit are both connected with the control unit; through automatic judgment of the control unit, the detection time is shortened, the detection efficiency is improved, and energy is saved.

Description

Technical Field

[0001] The utility model relates to the field of raw material detection of construction projects, in particular to a sample constant weight detection box and a detection device. Background Art

[0002] Constant weight means that after the sample material is dried under certain conditions, its mass does not change more than the weighing accuracy required by the experiment between two consecutive weighings with an interval of not less than 3 hours.

[0003] However, the current constant weight test of samples relies on manual weighing, requiring testers to take out samples for weighing in strict accordance with specifications. Operators need to have a high degree of professional knowledge and skills, resulting in poor accuracy of measurement results. Moreover, frequent weighing during sample testing will increase the workload of testers. Due to the long testing cycle, it may affect the progress of the entire project.

[0004] Therefore, there is an urgent need for a technical solution to solve the technical problem that the current constant weight detection of samples relies on manual work and the measurement accuracy is not high. Utility Model Content

[0005] The utility model aims to provide a sample constant weight detection box and a detection device to solve the technical problem that the current constant weight detection of samples relies on manual work and the measurement accuracy is not high.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A sample constant weight detection box, comprising a drying box, a containing space is arranged inside the drying box, a pressure measuring device is arranged outside the drying box, a weighing tray is arranged in the containing space, and the weighing tray is spaced apart from the box wall of the drying box;

[0008] The weighing tray is provided with a force-guiding rod, and the force-guiding rod passes through the box wall. One end of the force-guiding rod is connected to the pressure measuring device, and the other end is connected to the weighing tray.

[0009] The utility model discloses a sample constant weight detection box, which avoids the influence of temperature changes inside the drying box on the measurement accuracy of the pressure measuring device by arranging the weighing tray and the pressure measuring device inside and outside the drying box respectively; the weighing tray is used to place test samples, and the test samples press the weighing tray under the action of gravity, and the force of the weighing tray is transmitted to the pressure measuring device by the guide rod, so that the pressure measuring device can monitor the gravity changes on the weighing tray in real time; by using the sample constant weight detection box of the utility model, the weight changes of the test samples in the drying box can be monitored in real time, and the weighing errors caused by human operation are avoided, the measurement accuracy is improved, the manual operation process is reduced, and the work intensity of the operators is reduced.

[0010] As a preferred solution of the utility model, a sleeve is provided at the end of the weighing tray, a base is provided on the box wall, and the base is hinged to the sleeve. By providing a sleeve at the end of the weighing tray and hingedly connecting the sleeve to the base, the sleeve is used as a fulcrum of a lever. When a test sample is placed on the weighing tray, the pressure measuring device can be more sensitive to the weight change of the test sample under the action of the lever principle.

[0011] As a preferred solution of the utility model, the shaft sleeve is adapted to be provided with a rotating shaft, and the rotating shaft axially penetrates the shaft sleeve; the base includes a first hinge seat and a second hinge seat, and one end of the rotating shaft is connected to the first hinge seat, and the other end is connected to the second hinge seat. The base is provided at both ends of the rotating shaft, so that the weighing tray can be better supported, making the weighing tray more stable and ensuring the accuracy of the measurement results.

[0012] As a preferred solution of the utility model, a force guide seat is arranged in the middle of the shaft sleeve, and the end of the force guide seat is hinged to the force guide rod. By arranging the force guide seat in the middle of the shaft sleeve, the shaft sleeve can drive the force guide seat to move around the rotation axis, and the pressure measuring device determines the weight change of the test sample through the force change on the force guide rod.

[0013] As a preferred solution of the utility model, the box wall includes a bottom plate and a side plate, the side plate is vertically arranged on the bottom plate, the force guide rod and the weighing tray are both arranged parallel to the bottom plate, and the force guide rod runs through the side plate. The force guide rod, the force guide seat and the weighing tray together form a "Z"-shaped structural member, which can better conduct the force of the tray, making the measurement result of the pressure measuring device more accurate.

[0014] As a preferred solution of the utility model, the box wall is provided with a through hole, a through-wall tube is arranged in the through hole, the force-guiding rod passes through the through-wall tube, and the force-guiding rod is slidably connected with the through-wall tube. The through-wall tube is a circular tube, one end of which is located in the accommodation space and the other end is located outside the drying box, the through-wall tube penetrates the box wall, and the force-guiding rod passes through the hollow part of the through-wall tube.

[0015] As a preferred solution of the utility model, sealing covers are provided at both ends of the through-wall tube, and the sealing covers are provided with through-rod holes adapted to the force-guiding rod. The sealing covers can prevent the external environment from being connected to the accommodation space, so that the accommodation space always maintains an environment conducive to the weighing of the test sample, and the sealing covers can also limit the radial position of the force-guiding rod; lubricants are provided in the through-wall tube to facilitate the sliding of the force-guiding rod and improve the measurement accuracy.

[0016] As a preferred solution of the utility model, a contact platform is provided at the end of the force-guiding rod, and the contact platform contacts the pressure measuring device. The contact platform is a circular plate, and the pressure measuring device contacts the circular plate to measure the weight change of the test sample; the circular plate increases the contact area between the pressure measuring device and the force-guiding rod, making the measurement result more accurate.

[0017] As a preferred solution of the utility model, an opening is provided on the side of the drying box, the opening is communicated with the accommodating space, a sealing plate is provided to cover the opening, and the sealing plate is detachably connected to the drying box. The opening is provided to facilitate the taking and placing of the test sample, and the sealing plate is provided to isolate the accommodating space from the external environment to avoid the influence of the external environment on the measurement results of the test sample.

[0018] A sample constant weight detection device comprises a control unit, an oven system and a display unit, and also comprises the above-mentioned sample constant weight detection box, wherein the control unit is connected to the pressure measuring device, the oven system is connected to the drying box, and the oven system and the display unit are both connected to the control unit.

[0019] The utility model discloses a sample constant weight detection device, wherein the pressure measuring device is used to collect the initial weight data of the test sample on the weighing tray, and automatically collects the weight data of each time period according to the set collection interval time; the control unit is used to analyze and process the collected weight data, and judge whether the constant weight is reached according to the national standard of the corresponding test sample, and when the two weights before and after a certain time period meet the constant weight deviation range, the control unit issues a prompt that the constant weight is reached; the oven system is used to receive the instruction of the control unit, and when it is judged that the material has reached the constant weight, the oven is automatically closed to stop the baking process; the display unit outputs the processing result in a visual form.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] 1. A sample constant weight detection box of the utility model avoids the influence of temperature changes inside the drying box on the measurement accuracy of the pressure measuring device by arranging the weighing tray and the pressure measuring device inside and outside the drying box respectively; the weighing tray is used to place test samples, and the test samples press the weighing tray under the action of gravity, and the force of the weighing tray is transmitted to the pressure measuring device by the guide rod, so that the pressure measuring device can monitor the gravity changes on the weighing tray in real time; by using a sample constant weight detection box of the utility model, the weight changes of the test samples in the drying box can be monitored in real time, and the weighing errors caused by human operation are avoided, the measurement accuracy is improved, the manual operation process is reduced, and the work intensity of the operators is reduced.

[0022] 2. The utility model is a sample constant weight detection device, the pressure measuring device is used to collect the initial weight data of the test sample on the weighing tray, and automatically collects the weight data of each time period according to the set collection interval time; the control unit is used to analyze and process the collected weight data, and judge whether the constant weight is reached according to the national standards of the corresponding test samples. When the two weights before and after a certain time period meet the constant weight deviation range, the control unit issues a prompt that the constant weight is reached; the oven system is used to receive instructions from the control unit, and when it is judged that the material has reached the constant weight, the oven is automatically turned off to stop the baking process; the display unit outputs the processing results in a visual form.

[0023] 3. The utility model provides a sample constant weight detection device, which does not require the detection personnel to frequently take out materials for weighing, and realizes the automatic detection of test samples. The data collection and processing adopt high-precision sensors and advanced algorithms to ensure the accuracy and reliability of the test results. The control unit automatically judges, which significantly shortens the detection time, improves the detection efficiency, saves energy cost expenditure, reduces the workload of detection personnel, and reduces human errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a sample constant weight detection box in Example 1;

[0025] Figure 2 This is a schematic structural diagram of a sample constant weight detection box in Example 1;

[0026] Figure 3 is a schematic cross-sectional structural diagram of a sample constant weight detection box in Example 1;

[0027] Figure 4 It is a structural schematic diagram of a sample constant weight detection device of Example 4.

[0028] icon:

[0029] 1-accommodating space, 2-pressure measuring device, 3-weighing tray, 4-force guiding rod, 5-shaft sleeve, 6-base, 7-rotating shaft, 8-force guiding seat, 9-bottom plate, 10-side plate, 11-top plate, 12-equipment installation space, 13-control unit installation space, 14-wall pipe, 15-sealing cover, 16-abutment platform, 61-first articulated seat, 62-second articulated seat, 100-control unit. DETAILED DESCRIPTION

[0030] The utility model is described in detail below in conjunction with the accompanying drawings.

[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0032] Example 1

[0033] like Figure 1-Figure 3 A sample constant weight detection box shown in the figure comprises a drying box, wherein a receiving space 1 is arranged inside the drying box, a pressure measuring device 2 is arranged outside the drying box, a weighing tray 3 is arranged in the receiving space 1, and the weighing tray 3 is spaced apart from the wall of the drying box;

[0034] The weighing tray 3 is provided with a force-guiding rod 4 , and the force-guiding rod 4 penetrates the box wall. One end of the force-guiding rod 4 is connected to the pressure measuring device 2 , and the other end is connected to the weighing tray 3 .

[0035] Specifically, the drying box is a rectangular box with side openings, and the walls are composed of a bottom plate 9, a top plate 11 and three side plates 10. The opposite sides of the side plates 10 are respectively connected to the bottom plate 9 and the top plate 11. The side plates 10 are vertically arranged on the bottom plate 9 and the top plate 11. Adjacent side plates 10 are connected to each other. The bottom plate 9, the top plate 11 and the three side plates 10 together form a storage space 1. The opening is connected to the storage space 1. A sealing plate is covered on the opening so that the sealing plate is detachably connected to the drying box by bolts. The operator can take and place the test sample into the storage space 1 through the opening. The sealing plate can isolate the storage space 1 from the external environment, so that a suitable detection environment is maintained in the storage space 1.

[0036] Specifically, the weighing tray 3 is a plate-like structural member, a shaft sleeve 5 is arranged at the end of the weighing tray 3, two bases 6 are arranged on the bottom plate 9, and the shaft sleeve 5 is adapted to be provided with a rotating shaft 7, so that the rotating shaft 7 axially passes through the middle of the shaft sleeve 5, so that the rotating shaft 7 can rotate in the shaft sleeve 5, and the two ends of the rotating shaft 7 are respectively connected to the base 6, and the weighing tray 3 can be stably supported by the rotating shaft 7 and the base 6; the base 6 is composed of a first hinge seat 61 and a second hinge seat 62, one end of the rotating shaft 7 is fixedly connected to the first hinge seat 61, and the other end is fixedly connected to the second hinge seat 62.

[0037] Specifically, a force guide seat 8 is arranged in the middle of the shaft sleeve 5, so that the angle between the force guide seat 8 and the weighing tray 3 is 60 degrees, the force guide rod 4 and the weighing tray 3 are arranged parallel to the bottom plate 9, and the force guide rod 4 passes through the side plate 10; the force guide rod 4, the force guide seat 8 and the weighing tray 3 together form a "Z"-shaped structural member, and the "Z"-shaped structural member can better transmit the force of the tray, so that the measurement result of the pressure measuring device 2 is more accurate

[0038] Specifically, a through hole is opened in the box wall, and a wall-penetrating tube 14 is adapted to be arranged in the through hole. The force guiding rod 4 passes through the wall-penetrating tube 14, and the force guiding rod 4 is slidably connected to the wall-penetrating tube 14. Sealing covers 15 are arranged at both ends of the wall-penetrating tube 14. The sealing covers 15 have a rod-penetrating hole adapted to the force guiding rod 4, and a butt platform 16 is arranged at the end of the force guiding rod 4, and the butt platform 16 is butted against the pressure measuring device 2; the force guiding rod 4 is a cylindrical rod, and the rod-penetrating hole is a circular hole whose shape is adapted to the cylindrical rod. The force guiding rod 4 can slide in the circular hole, and the butt platform 16 is a circular plate, and the circular plate is butted against the pressure measuring device 2.

[0039] Specifically, the pressure measuring device 2 is a LX-S19A high-precision force sensor.

[0040] Specifically, the wall-penetrating tube 14 is filled with a high temperature resistant lubricant, such as boron nitride high temperature grease, polyurea grease, composite calcium sulfonate-based grease, molybdenum disulfide high temperature grease, bentonite high temperature grease, and graphite high temperature grease.

[0041] Specifically, the force-guiding rod 4 is a metal rod with low heat conductivity.

[0042] Specifically, an equipment installation space 12 for installing the oven system is opened on the bottom plate 9 , and a control unit installation space 13 is opened on one of the side plates 10 .

[0043] The utility model provides a sample constant weight detection box, which avoids the influence of temperature changes inside the drying box on the measurement accuracy of the pressure measuring device 2 by arranging the weighing tray 3 and the pressure measuring device 2 inside and outside the drying box respectively; the weighing tray 3 is used to place the test sample, and the test sample presses the weighing tray 3 under the action of gravity, and the force of the weighing tray 3 is transmitted to the pressure measuring device 2 by the guide rod 4, so that the pressure measuring device 2 can monitor the gravity change on the weighing tray 3 in real time; by using the utility model, the weight change of the test sample in the drying box can be monitored in real time, and the weighing error caused by human operation is avoided, the measurement accuracy is improved, the manual operation process is reduced, and the work intensity of the operators is reduced.

[0044] Example 2

[0045] The structure of a sample constant weight detection box of this embodiment is substantially the same as that of the embodiment 1. The difference from the embodiment 1 is that the wall-penetrating tube 14 is disposed through the top plate 11 .

[0046] Specifically, the pressure measuring device 2 is disposed on the top plate 11 .

[0047] Preferably, the wall-penetrating pipe 14 is disposed through the bottom plate 9 , and the pressure measuring device 2 is disposed on the bottom plate 9 .

[0048] Example 3

[0049] The structure of a sample constant weight detection box in this embodiment is substantially the same as that of the embodiment 1, but different from the embodiment 1 is that the base 6 is provided in plurality.

[0050] Specifically, the shaft sleeve 5 is provided with a plurality of idle sections along the axial direction thereof, and the rotating shaft 7 located in the idle sections can be hinged to the base 6 .

[0051] Example 4

[0052] like Figure 4 A sample constant weight detection device shown includes a control unit 100, an oven system and a display unit, and also includes a sample constant weight detection box described in Example 1 / Example 2 / Example 3, the control unit 100 is connected to the pressure measuring device 2, the oven system is connected to the drying box, and the oven system and the display unit are both connected to the control unit 100.

[0053] The specific steps are as follows:

[0054] 1. Place the test sample on the weighing tray and set the constant weight interval time in the control unit;

[0055] 2. The weighing tray drives the force guide seat, so that the force guide seat and the force guide rod apply pressure to the pressure measuring device;

[0056] 3. The control unit collects the data of the pressure measuring device as initial data;

[0057] 4. As the water in the test sample evaporates, the sample weight gradually changes;

[0058] 5. The control unit collects the sample weight at the set time interval. When the collected data is the same as the data collected at the beginning of the time interval or within the deviation range specified in the specification, it is judged that the constant weight has been reached;

[0059] 6. The control unit emits a sound prompt and outputs an image prompt to the display unit; the control unit outputs a control signal and turns off the power of the oven system.

[0060] The utility model discloses a sample constant weight detection device, wherein the pressure measuring device 2 is used to collect the initial weight data of the test sample on the weighing tray 3, and automatically collects the weight data of each time period according to the set collection interval time; the control unit 100 is used to analyze and process the collected weight data, and judge whether the constant weight is reached according to the national standard of the corresponding test sample, when the two weights before and after a certain time period meet the constant weight deviation range, the control unit 100 issues a prompt that the constant weight is reached; the oven system is used to receive the instruction of the control unit 100, and when it is judged that the material has reached the constant weight, the oven is automatically closed to stop the baking process; the display unit outputs the processing result in a visual form.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sample constant weight detection box, characterized in that: It comprises a drying box, wherein a storage space (1) is arranged inside the drying box, a pressure measuring device (2) is arranged outside the drying box, a weighing tray (3) is arranged in the storage space (1), and the weighing tray (3) is spaced apart from the wall of the drying box; The weighing tray (3) is provided with a force-guiding rod (4), the force-guiding rod (4) passing through the box wall, one end of the force-guiding rod (4) being connected to the pressure measuring device (2), and the other end being connected to the weighing tray (3).

2. A sample constant weight detection box as claimed in claim 1, characterized in that: A shaft sleeve (5) is arranged at the end of the weighing tray (3), a base (6) is arranged on the box wall, and the base (6) is hinged to the shaft sleeve (5).

3. A sample constant weight detection box as claimed in claim 2, characterized in that: The shaft sleeve (5) is adapted to be provided with a rotating shaft (7), and the rotating shaft (7) axially penetrates the shaft sleeve (5); the base (6) comprises a first hinge seat (61) and a second hinge seat (62), and one end of the rotating shaft (7) is connected to the first hinge seat (61), and the other end is connected to the second hinge seat (62).

4. A sample constant weight detection box as claimed in claim 3, characterized in that: A force guiding seat (8) is arranged in the middle of the shaft sleeve (5), and an end of the force guiding seat (8) is hingedly connected to the force guiding rod (4).

5. A sample constant weight detection box as claimed in claim 1, characterized in that: The box wall comprises a bottom plate (9) and a side plate (10), wherein the side plate (10) is arranged perpendicularly to the bottom plate (9), the force guide rod (4) and the weighing tray (3) are arranged parallel to the bottom plate (9), and the force guide rod (4) passes through the side plate (10).

6. A sample constant weight detection box as claimed in claim 1, characterized in that: The box wall is provided with a through hole, a wall-penetrating tube (14) is adapted to be arranged in the through hole, the force-guiding rod (4) passes through the wall-penetrating tube (14), and the force-guiding rod (4) is slidably connected to the wall-penetrating tube (14).

7. A sample constant weight detection box as claimed in claim 6, characterized in that: Sealing covers (15) are provided at both ends of the wall-penetrating tube (14), and the sealing covers (15) are provided with rod-penetrating holes adapted to the force-guiding rod (4).

8. A sample constant weight detection box as claimed in claim 1, characterized in that: An abutment platform (16) is provided at the end of the force-guiding rod (4), and the abutment platform (16) abuts against the pressure measuring device (2).

9. A sample constant weight detection box as claimed in claim 1, characterized in that: An opening is provided on the side of the drying box, the opening is communicated with the accommodating space (1), and a sealing plate is provided to cover the opening, and the sealing plate is detachably connected to the drying box.

10. A sample constant weight detection device, characterized in that: The invention comprises a control unit (100), an oven system and a display unit, and also comprises a sample constant weight detection box according to any one of claims 1 to 9, wherein the control unit (100) is connected to the pressure measuring device (2), the oven system is connected to the drying box, and the oven system and the display unit are both connected to the control unit (100).

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