Device for detecting moisture content of sand-gravel material in concrete mixing plant

Abstract

The utility model discloses a sand-gravel water content detection device for a concrete mixing plant, and relates to the technical field of sand-gravel water content detection. Comprising a near-infrared moisture meter, a position adjusting assembly and a probe protection assembly, wherein the position adjusting assembly is mounted on a concrete mixing plant and used for adjusting the position of the near-infrared moisture meter, the probe protection assembly is mounted on the near-infrared moisture meter and used for protecting the near-infrared moisture meter, and a mounting groove in threaded connection with the probe protection assembly is formed in the front end of the near-infrared moisture meter; and a probe main body which coincides with the axis of the probe protection assembly is arranged in the mounting groove. According to the invention, the near-infrared moisture meter is adopted to carry out on-line detection on the moisture of the sand-gravel material in the concrete mixing plant, and the near-infrared moisture meter is directly and fixedly mounted in the concrete mixing plant through the position adjusting assembly, so that a worker can calculate the moisture content of the sand-gravel material according to the content of the added sand-gravel material; the whole sand-gravel material moisture detection device is installed in a concrete mixing plant, manual material taking is not needed, and the working efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sand and gravel moisture content detection, and in particular to a sand and gravel moisture content detection device for a concrete mixing station. Background Art

[0002] A concrete mixing station is a combined device used for centralized mixing of concrete, also known as a concrete prefabrication site. During the concrete mixing process, the moisture content of sand and gravel needs to be tested to control the moisture content of sand and gravel.

[0003] At present, the moisture content of washed sand in concrete mixing plants needs to be tested manually on site. After sampling, the sand and gravel are taken to the laboratory for moisture testing. The moisture content can be tested by laboratory sampling or by manual judgment by experienced material inspectors.

[0004] After searching, the Chinese patent authorization announcement number CN218660297U discloses a concrete mixing station sand and gravel moisture content detection device, including a mixing box, a weighing mechanism, and through the first motor, a threaded shaft, a fixed cylinder, a fixed plate, a gravity sensor and a blocking plate, the quality of the sand and gravel before drying can be accurately measured, and then the heater and the mixing blades are used in cooperation with each other to quickly dry the sand and gravel, so that the quality after drying can be accurately controlled, thereby preventing the evaporation of water in the sand and gravel during the transfer process, thereby improving the moisture content accuracy of the sand and gravel.

[0005] The device for detecting the moisture content of sand and gravel in a concrete mixing station in the above-mentioned patent has the following shortcomings: the device weighs the mass of sand and gravel before and after drying to obtain the moisture content of sand and gravel, but it still needs to rely on manual material collection, and it is not convenient to be directly installed on site at the mixing station to realize non-contact detection of the moisture content of washed sand in the process of conveying and batching. Utility Model Content

[0006] The purpose of the utility model is to solve or at least alleviate the problem in the prior art that the equipment still needs to rely on manual material collection and is not convenient to be directly installed on site at the mixing station to realize non-contact detection of the moisture content of washed sand in the process of conveying and batching.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting the moisture content of sand and gravel in a concrete mixing station, comprising a near-infrared moisture meter, a position adjustment component installed in the concrete mixing station and used to adjust the position of the near-infrared moisture meter, and a probe protection component installed in the near-infrared moisture meter and used to protect the near-infrared moisture meter, wherein a mounting groove threadedly connected to the probe protection component is provided at the front end of the near-infrared moisture meter, and a probe body which coincides with the axis of the probe protection component is provided inside the mounting groove.

[0008] By adopting the above technical solution, the near-infrared moisture meter is directly fixed inside the concrete mixing station through a position adjustment component and is kept at an appropriate distance from the concrete in the concrete mixing station. The probe body is placed downward and perpendicular to the concrete. The moisture content of sand and gravel is monitored in real time through the near-infrared moisture meter, thereby realizing non-contact detection of the moisture content of washed sand.

[0009] Optionally, the position adjustment assembly includes a T-shaped guide slider fixedly connected to the near-infrared moisture meter, a transmission screw installed inside the guide slider and connected via a screw nut, and an installation bin wrapped around the outside of the transmission screw to protect the transmission screw and the guide slider.

[0010] By adopting the above technical solution, the guide slider can realize linear motion on the transmission screw through the screw nut, so as to adjust the position of the near-infrared moisture meter, avoiding the near-infrared moisture meter always detecting the moisture of concrete sand and gravel at the same position.

[0011] Optionally, the installation bin is fixedly mounted to the concrete mixing station by external bolts.

[0012] By adopting the above technical solution, the installation bin can protect the transmission screw rod.

[0013] Optionally, a lead screw motor is fixedly mounted on one side of the mounting bin by bolts, and a power output end of the lead screw motor is connected to a transmission lead screw.

[0014] By adopting the above technical solution, the transmission screw can be driven to rotate by the screw motor.

[0015] Optionally, a guide slot for limiting the position of the guide slider is provided at the connection between the guide slider and the installation bin, and the outer dimensions of the guide slot and the guide slider are matched to each other.

[0016] By adopting the above technical solution, the guide slide groove plays a guiding and limiting role on the guide slider.

[0017] Optionally, the probe protection assembly includes a protection cover covering the outside of the probe body, a movable baffle rotatably mounted on the front end of the protection cover, and a water retaining strip arranged around the movable baffle for waterproofing.

[0018] By adopting the above technical solution, the probe protection assembly can protect the probe body, thereby preventing sand and gravel in the concrete mixing station from hitting the probe body and causing damage to the probe body.

[0019] Optionally, a connector is fixed on the top of the movable baffle, and a rotating rod is passed through the interior of the connector, and one end of the rotating rod is connected to a rotating motor and fixedly connected to a power output end of the rotating motor.

[0020] With the above technical solution, the rotary motor can drive the rotating rod to rotate, thereby driving the movable baffle to rotate through the rotating rod. When the near-infrared moisture meter needs to be used, it can be rotated open without hindering the normal use of the probe body.

[0021] Optionally, a limiting plate fixed on the protective cover is provided on one side end surface of the movable baffle, the water retaining strip is bonded to the protective cover, and the outer dimensions of the water retaining strip and the movable baffle are adapted to each other.

[0022] By adopting the above technical solution, the movable baffle is limited by setting a limit plate to prevent the movable baffle from rotating backward into the protective cover.

[0023] In summary, the beneficial effects of this application are as follows:

[0024] 1. The new model of the present application adopts a near-infrared moisture meter to perform online detection of the moisture content of sand and gravel in the concrete mixing station. Workers can calculate the moisture content of sand and gravel according to the added sand and gravel content. The entire sand and gravel moisture detection device is installed in the concrete mixing station, eliminating the need for manual material collection and improving work efficiency.

[0025] 2. In the new application, the position of the near-infrared moisture meter can be adjusted through a position adjustment component, so as to avoid the influence of the calculation result caused by the near-infrared moisture meter always detecting the moisture of concrete sand and gravel at the same position, thereby reducing the error.

[0026] 3. In the new application, the probe protection assembly can protect the probe body, thereby preventing sand and gravel in the concrete mixing station from hitting the probe body and causing damage to the probe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the entire application;

[0028] Figure 2 It is a schematic diagram of the transmission screw of this application;

[0029] Figure 3 It is a schematic diagram of the protective cover of this application;

[0030] Figure 4 It is a schematic diagram of the movable baffle of this application.

[0031] Explanation of the accompanying drawings: In the figure: 1. Near-infrared moisture meter; 2. Position adjustment component; 201. Installation compartment; 202. Guide slider; 203. Guide slide groove; 204. Screw motor; 205. Transmission screw; 206. Screw nut; 3. Probe protection component; 301. Protective cover; 302. Movable baffle; 303. Water retaining bar; 304. Limiting plate; 305. Connector; 306. Rotating rod; 307. Rotating motor; 4. Probe body; 5. Installation groove. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] See also Figure 1 The invention discloses a device for detecting moisture content of gravel in a concrete mixing station, comprising a near-infrared moisture meter 1, a position adjustment component 2 installed in the concrete mixing station and used for adjusting the position of the near-infrared moisture meter 1, and a probe protection component 3 installed in the near-infrared moisture meter 1 and used for protecting the near-infrared moisture meter 1. The front end of the near-infrared moisture meter 1 is provided with a mounting groove 5 threadedly connected with the probe protection component 3, and the interior of the mounting groove 5 is provided with a probe body 4 which coincides with the axis of the probe protection component 3. The near-infrared moisture meter 1 is directly fixedly installed in the concrete mixing station through the position adjustment component 2, and is kept at a suitable distance from the concrete in the concrete mixing station. The probe body 4 is placed downwardly and perpendicularly to the concrete. The moisture content of gravel is monitored in real time by the near-infrared moisture meter 1, thereby realizing non-contact detection of the moisture content of washed sand.

[0034] Reference Figure 1 and Figure 2 The position adjustment component 2 includes a guide slider 202 of a T-shaped structure fixedly connected to the near-infrared moisture meter 1, a transmission screw 205 installed inside the guide slider 202 and connected by a screw nut 206, and an installation bin 201 wrapped around the outside of the transmission screw 205 to protect the transmission screw 205 and the guide slider 202. The position adjustment component 2 is fixed by bolts at a suitable position as needed. The installation bin 201 is fixedly installed with the concrete mixing station by external bolts. The installation bin 201 can protect the transmission screw 205. A guide slot 203 for limiting the guide slider 202 is provided at the connection between the guide slider 202 and the installation bin 201, and the outer dimensions of the guide slot 203 and the guide slider 202 are adapted to each other, and the guide slot 203 plays a guiding and limiting role for the guide slider 202;

[0035] A screw motor 204 is fixedly installed on one side of the installation bin 201 by bolts, and the power output end of the screw motor 204 is connected to the transmission screw 205. The screw motor 204 can drive the transmission screw 205 to rotate, thereby driving the guide slider 202 to realize linear motion on the transmission screw 205 through the screw nut 206. At the same time, the guide slider 202 slides in the guide slot 203, thereby adjusting the position of the near-infrared moisture meter 1, avoiding the near-infrared moisture meter 1 always detecting the moisture of concrete sand and gravel at the same position.

[0036] Reference Figure 3 and Figure 4The probe protection assembly 3 includes a protective cover 301 covering the outside of the probe body 4, a movable baffle 302 rotatably installed at the front end of the protective cover 301, and a water retaining strip 303 for waterproofing arranged around the movable baffle 302. The water retaining strip 303 is bonded and connected to the protective cover 301, and the outer dimensions of the water retaining strip 303 and the movable baffle 302 are mutually adapted. The probe protection assembly 3 can protect the probe body 4. Since the protective cover 301 is threadedly connected to the mounting groove 5, when the near-infrared moisture meter 1 is maintained in the later stage, the protective cover 301 can be rotated to separate the protective cover 301 from the mounting groove 5, and the stains outside the protective cover 301 are cleaned regularly to ensure the normal use of the protective cover 301 and prevent the sand and gravel in the concrete mixing station from hitting the probe body 4 and causing damage to the probe body 4;

[0037] A connector 305 is fixed to the top of the movable baffle 302, and a rotating rod 306 is passed through the interior of the connector 305. One end of the rotating rod 306 is connected to a rotary motor 307 and is fixedly connected to the power output end of the rotary motor 307. The rotary motor 307 can drive the rotating rod 306 to rotate, thereby driving the movable baffle 302 to rotate through the rotating rod 306. When the near-infrared moisture meter 1 needs to be used, it can be rotated and opened, and will not hinder the normal use of the probe body 4. A limiting plate 304 fixed to the protective cover 301 is provided on one side end face of the movable baffle 302. The limiting plate 304 is provided to limit the movable baffle 302. The rotary motor 307 drives the movable baffle 302 to rotate backward through the rotating rod 306, so that the movable baffle 302 and the limiting plate 304 are tightly closed, which can prevent the movable baffle 302 from rotating backward into the protective cover 301.

[0038] The implementation principle of the present application is as follows: when in use, firstly, the position adjustment component 2 is fixed by bolts at a suitable position as required, the installation bin 201 is installed inside the mixing station, the probe body 4 is directed toward the concrete sand and gravel, and the weight of the sand and gravel in the mixing station is obtained according to the sand and gravel weighing system in the concrete mixing station;

[0039] Next, the moisture content of the sand and gravel is detected by the near-infrared moisture meter 1, and the rotary motor 307 is started. The power output end of the rotary motor 307 drives the rotating rod 306 to rotate, thereby driving the movable baffle 302 to rotate forward and open through the rotating rod 306. The infrared light beam emitted by the probe body 4 can hit the concrete sand and gravel, thereby obtaining the moisture value of the sand and gravel at the current position. The detected moisture value is transmitted to the control center of the mixing station through a cable. After the corresponding value is measured, the rotary motor 307 drives the connector 305 to rotate through the rotating rod 306, thereby driving the movable baffle 302 to rotate backward through the connecting head 305, so that the movable baffle 302 and the limit plate 304 are tightly closed;

[0040] Subsequently, the screw motor 204 is started, and the power output end of the screw motor 204 drives the transmission screw 205 to rotate, thereby driving the guide slider 202 to make a linear motion on the transmission screw 205 through the screw nut 206. After the guide slider 202 slides in the guide slot 203, the position of the near-infrared moisture meter 1 is adjusted. After the near-infrared moisture meter 1 is moved to the next detection point, the rotary motor 307 is started again to open the movable baffle 302, and the moisture content of the sand and gravel is detected at the detection point.

[0041] Finally, the control center controls the water adding system and the feeding system according to the moisture detection values ​​of the sand and gravel at all positions, so that the moisture content of the sand and gravel reaches the appropriate standard. When the near-infrared moisture meter 1 is maintained in the later stage, the protective cover 301 can be rotated to separate the protective cover 301 from the installation groove 5, and the stains outside the protective cover 301 are cleaned regularly to ensure the normal use of the protective cover 301.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for detecting moisture content of gravel in a concrete mixing station, comprising a near-infrared moisture meter (1), a position adjustment component (2) installed in the concrete mixing station and used to adjust the position of the near-infrared moisture meter (1), and a probe protection component (3) installed in the near-infrared moisture meter (1) and used to protect the near-infrared moisture meter (1), characterized in that: The front end of the near-infrared moisture meter (1) is provided with a mounting groove (5) threadedly connected to the probe protection component (3), and a probe body (4) is arranged inside the mounting groove (5) and coincides with the axis of the probe protection component (3).

2. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 1 is characterized in that: The position adjustment assembly (2) comprises a guide slider (202) of a T-shaped structure fixedly connected to the near-infrared moisture meter (1), a transmission screw (205) installed inside the guide slider (202) and connected via a screw nut (206), and an installation bin (201) wrapped around the outside of the transmission screw (205) for protecting the transmission screw (205) and the guide slider (202).

3. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 2 is characterized in that: The installation bin (201) is fixedly installed with the concrete mixing station via external bolts.

4. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 3 is characterized in that: A screw motor (204) is fixedly mounted on one side of the mounting bin (201) by means of bolts, and a power output end of the screw motor (204) is connected to a transmission screw (205).

5. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 4 is characterized in that: A guide slot (203) for limiting the position of the guide slider (202) is provided at the connection between the guide slider (202) and the installation bin (201), and the outer dimensions of the guide slot (203) and the guide slider (202) are mutually compatible.

6. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 1, characterized in that: The probe protection assembly (3) comprises a protection cover (301) covering the outside of the probe body (4), a movable baffle (302) rotatably mounted on the front end of the protection cover (301), and water retaining strips (303) arranged around the movable baffle (302) for waterproofing.

7. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 6, characterized in that: A connector (305) is fixed on the top of the movable baffle (302), and a rotating rod (306) is inserted into the interior of the connector (305). One end of the rotating rod (306) is connected to a rotating motor (307) and is fixedly connected to a power output end of the rotating motor (307).

8. The device for detecting moisture content of sand and gravel in a concrete mixing station according to claim 7, characterized in that: A limiting plate (304) fixed to the protective cover (301) is provided on one end face of the movable baffle (302), the water retaining strip (303) is bonded to the protective cover (301), and the outer dimensions of the water retaining strip (303) and the movable baffle (302) are mutually compatible.

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