Calibrating device for concrete gas content tester

Abstract

The utility model relates to the technical field of concrete quality detection equipment, and discloses a calibration device for a concrete gas content tester, which comprises a box body, a cover plate arranged on the upper surface of the box body, a limiting component arranged on the upper surface of the cover plate, a water injection pipe arranged on the upper surface of the cover plate, and a water outlet pipe arranged on the upper surface of the water injection pipe, the upper surface of the cover plate is provided with a gas injection pipe and a connecting piece, the top of the connecting piece is fixedly connected with pressure gauges, the upper surface of the cover plate is provided with a sealing assembly, and in order to make a connector not prone to loosening, after the equipment uses the two pressure gauges for detection, one of the pressure gauges is detached, and then the sealing piece is in threaded connection with the connector; the clamping piece is used for being clamped on the outer surface of the ring piece, the side portion of the clamping piece makes contact with the outer surface of the limiting strip, the clamping piece can be well clamped on the outer surface of the ring piece, meanwhile, the threaded rod is rotated to enable the threaded block to move downwards, the connecting rod pulls the clamping piece to press downwards, and therefore the sealing piece is not prone to loosening.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete quality detection equipment, in particular to a calibration device for a concrete air content measuring instrument. Background Art

[0002] The concrete air content meter is used to measure the air content in the mixture. Concrete can be divided into two components, namely coarse aggregate and mortar. The size of the coarse aggregate particle size has almost no direct effect on the air content. The introduced bubbles are distributed in the fine particles of concrete, namely mortar, and the performance of the entire concrete is determined by the performance of the mortar.

[0003] Some equipment on the market generally installs multiple mounting columns to facilitate the calibration and testing of multiple pressure gauges to be measured at the same time. By setting a vibration mechanism inside the measuring bowl, it is convenient to improve the accuracy of concrete sample measurement. By setting a diaphragm between the water chamber and the top of the measuring bowl, the water inside the water chamber enters the measuring bowl at the same time, preventing the concrete to be measured inside the measuring bowl from moving into the water chamber, thereby improving the efficiency and accuracy of the measurement.

[0004] However, in actual use, the above-mentioned equipment needs to be sealed after the equipment calibration is completed. When the equipment is testing cement, air is pumped into the equipment, which causes the sealed connector to generate greater pressure. After the equipment is frequently used, the sealed connector is prone to loosening, resulting in friction between the connector and the seal, which makes the standard pressure gauge poorly sealed during installation and causes inaccurate data during equipment calibration. In view of this, we propose a calibration device for a concrete air content meter. Utility Model Content

[0005] The purpose of the utility model is to provide a calibration device for a concrete air content measuring instrument to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a calibration device for a concrete air content measuring instrument, comprising a box body, a cover plate provided on the upper surface of the box body, a limit assembly provided on the upper surface of the cover plate, a water injection pipe provided on the upper surface of the cover plate, an air injection pipe provided on the upper surface of the cover plate, a connector provided on the upper surface of the cover plate, a pressure gauge fixedly connected to the top of the connector, a sealing assembly provided on the upper surface of the cover plate, and the sealing assembly comprising:

[0007] A connector, the connector being fixedly connected to the upper surface of the cover plate, the outer surface of the connector being fixedly connected to a mounting piece, and the bottom of the inner wall of the mounting piece being rotatably connected to a threaded rod;

[0008] A threaded block, the threaded block being threadedly connected to the outer surface of the threaded rod, the side of the threaded block being hinged with a connecting rod, and the end of the connecting rod being hinged with a clamp;

[0009] A sealing member is threadedly connected to the outer surface of the connector, a limiting strip is fixedly connected to the outer surface of the sealing member, and a ring is fixedly connected to the outer surface of the sealing member.

[0010] Preferably, the size of the clamping member is adapted to the size of the ring member, and the side portion of the clamping member is arranged in an arc shape, which can enable the clamping member to better fit the outer surface of the ring member.

[0011] Preferably, the limiting strips are evenly distributed on the outer surface of the seal in a circular array, and the outer surface of the limiting strips contacts the clamping piece, which allows the limiting strips to clamp the clamping piece more firmly on the outer surface of the ring piece.

[0012] Preferably, the mounting piece is arranged in an L-shape, and a threaded block is arranged inside the mounting piece, so that the threaded block can move well inside the mounting piece.

[0013] Preferably, an auxiliary component is provided inside the sealing member, and the auxiliary component includes an insert, the insert is fixedly connected to the top of the inner wall of the sealing member, and a sealing ring is fixedly connected to the outer surface of the insert.

[0014] Preferably, the sealing rings are evenly distributed on the outer surface of the insert in a linear array, and the position of the insert corresponds to the position of the connector.

[0015] Compared with the prior art, the present invention provides a calibration device for a concrete air content measuring instrument, which has the following beneficial effects:

[0016] 1. The concrete air content meter uses a calibration device. In order to prevent the connector from loosening, after the equipment is tested with two pressure gauges, one of them is removed, and the seal is connected to the connector threadedly. The clamp is clamped on the outer surface of the ring, and the side of the clamp is in contact with the outer surface of the limit bar, so that the clamp can be well clamped on the outer surface of the ring. At the same time, the threaded rod is rotated to move the threaded block downward, and the connecting rod pulls the clamp downward to press it, so that the seal is not easy to loosen. When the standard pressure gauge is installed, the internal part of the equipment can be better inspected, and the data displayed by the pressure gauge that has been used for a long time can be compared, so that the pressure gauge that has been used for a long time can be effectively calibrated and adjusted.

[0017] 2. The calibration device for the concrete air content meter is used. In order to improve the sealing performance of the equipment, when the seal is installed on the outer surface of the connector, the insert is inserted into the inside of the connector. As the seal rotates, the seal moves downward, so that the sealing ring provided on the outer surface of the insert contacts the inner wall of the connector, and the sealing ring and the arc-shaped groove on the inner wall of the connector are engaged with each other, so that the sealing performance of the equipment is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional left-view structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the explosion structure of the cover plate of the utility model;

[0020] Figure 3 This is an enlarged structural diagram of area A of the utility model;

[0021] Figure 4 This is a schematic diagram of the sealing structure of the utility model.

[0022] In the figure: 1. Box body; 2. Cover plate; 3. Limiting assembly; 4. Connecting part; 5. Pressure gauge; 6. Air injection pipe; 7. Water injection pipe; 8. Sealing assembly; 801. Connecting head; 802. Sealing part; 803. Limiting strip; 804. Ring; 805. Mounting part; 806. Threaded rod; 807. Threaded block; 808. Connecting rod; 809. Clamp; 9. Auxiliary assembly; 901. Insert; 902. Sealing ring. DETAILED DESCRIPTION

[0023] like Figures 1-4 As shown, the utility model provides a technical solution: a calibration device for a concrete air content measuring instrument, comprising a box body 1, a cover plate 2 is provided on the upper surface of the box body 1, a limit assembly 3 is provided on the upper surface of the cover plate 2, a water injection pipe 7 is provided on the upper surface of the cover plate 2, an air injection pipe 6 is provided on the upper surface of the cover plate 2, a connector 4 is provided on the upper surface of the cover plate 2, a pressure gauge 5 is fixedly connected to the top of the connector 4, a sealing assembly 8 is provided on the upper surface of the cover plate 2, and the sealing assembly 8 includes a connector 801, a mounting part 805, a threaded rod 806, a threaded block 807, a connecting rod 808, a clamp 809, a seal 802, a limit strip 803 and a ring 804.

[0024] 804 , the outer surface of the clamping member 809 is arranged in an arc shape, so that the clamping member 809 can better fit the outer surface of the ring member 804. The sealing member 802 is threadedly connected to the outer surface of the connector 801, and the outer surface of the sealing member 802 is fixedly connected to the limiting strip 803. The limiting strip 803 is evenly distributed in a circular array. At the outer surface of the seal 802, the outer surface of the limit strip 803 contacts the clamping piece 809, which allows the limit strip 803 to clamp the clamping piece 809 more firmly on the outer surface of the ring 804. The outer surface of the seal 802 is fixedly connected to the ring 804, so that after the equipment has been used for a long time, the seal 802 can be rotated to remove the seal 802, and then the standard pressure gauge 5 is installed on the outer surface of the connector 801, and the standard pressure gauge 5 and the pressure gauge 5 used for a long time are installed together on the upper surface of the cover plate 2. After the concrete is placed inside the equipment, the cover plate 2 covers the box body 1, and it is fixed with the limit assembly 3. At the same time, water is injected into the equipment from the water injection pipe 7, and then the water injection pipe 7 is sealed, and air is injected into the air injection pipe 6, so that the two pressure gauges 5 can detect the inside of the equipment. In this way, the data displayed by the two pressure gauges 5 can be compared, thereby effectively calibrating the pressure gauge 5 that has been used for a long time.

[0025] At the same time, an auxiliary component 9 is provided inside the seal 802, and the auxiliary component 9 includes an insert 901, which is fixedly connected to the top of the inner wall of the seal 802. The position of the insert 901 corresponds to the position of the connector 801, and a sealing ring 902 is fixedly connected to the outer surface of the insert 901. The sealing rings 902 are evenly distributed on the outer surface of the insert 901 in a linear array. In this way, when the seal 802 is installed on the outer surface of the connector 801, the insert 901 can be inserted into the inside of the connector 801. As the seal 802 rotates, the seal 802 moves downward, so that the sealing ring 902 set on the outer surface of the insert 901 contacts the inner wall of the connector 801, so that the sealing ring 902 and the arc-shaped groove on the inner wall of the connector 801 are engaged with each other, making the equipment more sealed.

[0026] In the present invention, when in use, after the equipment is tested using two pressure gauges 5, one of them is removed, and the seal 802 is threadedly connected to the connector 801, and the clamping member 809 is clamped on the outer surface of the ring 804, so that the side of the clamping member 809 contacts the outer surface of the limit strip 803, so that the clamping member 809 can be well clamped on the outer surface of the ring 804, and at the same time, the threaded rod 806 is rotated to move the threaded block 807 downward, and the connecting rod 808 pulls the clamping member 809 to press downward, so that the seal 802 is not easy to loosen.

[0027] Furthermore, when the seal 802 is installed on the outer surface of the connector 801, the insert 901 is inserted into the inside of the connector 801, and then as the seal 802 rotates, the seal 802 moves downward, so that the sealing ring 902 set on the outer surface of the insert 901 contacts the inner wall of the connector 801, so that the sealing ring 902 and the arc-shaped groove on the inner wall of the connector 801 are engaged with each other, making the equipment more sealed.

[0028] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A calibration device for a concrete air content measuring instrument, comprising a box (1), a cover plate (2) provided on the upper surface of the box (1), a limit assembly (3) provided on the upper surface of the cover plate (2), a water injection pipe (7) provided on the upper surface of the cover plate (2), an air injection pipe (6) provided on the upper surface of the cover plate (2), a connector (4) provided on the upper surface of the cover plate (2), a pressure gauge (5) fixedly connected to the top of the connector (4), characterized in that: A sealing assembly (8) is provided on the upper surface of the cover plate (2), and the sealing assembly (8) comprises: A connector (801), the connector (801) being fixedly connected to the upper surface of the cover plate (2), a mounting member (805) being fixedly connected to the outer surface of the connector (801), and a threaded rod (806) being rotatably connected to the bottom of the inner wall of the mounting member (805); A threaded block (807), wherein the threaded block (807) is threadedly connected to the outer surface of the threaded rod (806), a connecting rod (808) is hingedly connected to the side of the threaded block (807), and a clamp (809) is hingedly connected to the end of the connecting rod (808); A sealing member (802) is threadedly connected to the outer surface of the connector (801), a limiting strip (803) is fixedly connected to the outer surface of the sealing member (802), and a ring member (804) is fixedly connected to the outer surface of the sealing member (802).

2. The calibration device for a concrete air content measuring instrument according to claim 1, characterized in that: The size of the clamping member (809) is adapted to the size of the ring member (804), and the side of the clamping member (809) is arranged in an arc shape.

3. The calibration device for a concrete air content measuring instrument according to claim 1, characterized in that: The limiting strips (803) are evenly distributed on the outer surface of the sealing member (802) in a circumferential array, and the outer surface of the limiting strips (803) is in contact with the clamping member (809).

4. The calibration device for a concrete air content measuring instrument according to claim 1, characterized in that: The mounting member (805) is arranged in an L-shape, and a threaded block (807) is arranged inside the mounting member (805).

5. The calibration device for a concrete air content measuring instrument according to claim 1, characterized in that: An auxiliary component (9) is provided inside the sealing member (802), and the auxiliary component (9) includes an insert (901). The insert (901) is fixedly connected to the top of the inner wall of the sealing member (802), and a sealing ring (902) is fixedly connected to the outer surface of the insert (901).

6. The calibration device for a concrete air content measuring instrument according to claim 5, characterized in that: The sealing rings (902) are evenly distributed on the outer surface of the insert (901) in a linear array, and the position of the insert (901) corresponds to the position of the connector (801).

Images