Mechanical granary temperature early warning device

Abstract

A mechanical granary temperature early warning device comprises a power supply mechanism and a detection assembly electrically connected with the power supply mechanism through an electric wire. The detection assembly comprises a feedback unit and a trigger unit arranged on the feedback unit; the feedback unit comprises a bottle body, and a feedback medium and a piston rod which can slide under the influence of thermal expansion and cold contraction of the feedback medium are arranged in the bottle body; the trigger unit comprises a strain gauge arranged at the opening of the bottle body and a contact head arranged at a gap with the strain gauge, the positive and negative electrodes of the power supply mechanism are connected with the strain gauge and the contact head respectively, and the piston rod is arranged to be capable of pushing the strain gauge to make contact with the contact head; when the temperature of the granary meets the grain storage condition, the strain gauge and the contact head are separated, the whole circuit is in an open circuit state, when the temperature in the granary is too high, the feedback medium is heated to expand and can push the piston rod to move, and then the strain gauge is pushed to make contact with the contact head through the piston rod. At the moment, the circuit is converted into a closed circuit, and the alarm works through the alarm.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to a mechanical grain warehouse temperature early warning device. Background Technology

[0002] In the environmental monitoring of grain warehouses, the storage temperature is an important indicator related to the quality of stored grain. Currently, in the grain storage work, temperature sensors are usually used to detect the internal temperature of the grain warehouse, and the temperature is remotely monitored through a monitoring host. However, the method of using temperature sensors for temperature monitoring has two limitations. First, it cannot meet the on-site monitoring requirements. Second, the electrical signal processing of temperature sensors is complex, the installation cost is high, and because they are always in operation, they are prone to aging, which reduces their lifespan and detection accuracy. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model provides a mechanical grain warehouse temperature early warning device.

[0004] The technical solution of this utility model is as follows:

[0005] A mechanical grain silo temperature early warning device includes a power supply mechanism and a detection mechanism electrically connected to it via a wire. An alarm is also connected in series on the wire. The detection mechanism can monitor the internal temperature of the grain silo, and the alarm can be triggered when the internal temperature of the grain silo is too high.

[0006] As the core technical concept of this utility model, the detection mechanism includes a detection component, which includes a feedback unit and a triggering unit. Specifically, the feedback unit includes a bottle body, inside which is a feedback medium and a piston rod that can slide due to the thermal expansion and contraction of the feedback medium. The triggering unit includes a strain gauge located at the mouth of the bottle body and a contact head disposed with a gap between the strain gauge and the strain gauge. The positive and negative poles of the power supply mechanism are respectively connected to the strain gauge and the contact head, and the piston rod is configured to push the strain gauge and the contact head into contact. Based on the above structure, when the temperature of the grain silo meets the storage conditions of the grain, the strain gauge and the contact head are separated, and the circuit is in an open circuit state. When the temperature inside the grain silo is too high, the feedback medium expands due to heat and can push the piston rod to move, thereby pushing the strain gauge to contact the contact head. At this time, the circuit is switched to a closed circuit, and the alarm is activated through the alarm. This method of controlling the operation of the triggering unit through the mechanical action of the feedback unit allows the circuit to switch between open and closed circuits due to the influence of ambient temperature. At the same time, current flows in the circuit only in the closed state, and the alarm provides on-site temperature warning, effectively ensuring the service life of the warning device.

[0007] As described above, in order to enable the early warning device to perform early warning work at different trigger temperatures according to different grain storage temperature requirements, the strain gauge is fixed to the outer end of the bottleneck, and the distance between the contact head and the strain gauge along the axis of the bottleneck is adjustable.

[0008] As a preferred embodiment, in order to ensure the conductivity and elasticity of the strain gauge so that it can detach from the contact head when the temperature inside the grain silo drops, the strain gauge is made of steel.

[0009] As a further preferred embodiment, in order to enable the strain gauge to be pushed more smoothly by the piston rod, and at the same time to further ensure the elasticity of the strain gauge, the thickness of the strain gauge is 0.2-0.7mm.

[0010] As described above, in a preferred embodiment of the mechanical grain warehouse temperature warning device, the bottle body is made of ceramic, carbon fiber, or glass to reduce the impact of thermal expansion and contraction on the volume change of the internal feedback medium.

[0011] As a further preferred embodiment, in order to ensure the thermal expansion and contraction effect of the feedback medium, and thus ensure that the strain gauge can be smoothly deformed through its thermal expansion and contraction, the feedback medium is water, ethanol or gasoline.

[0012] As described above, in order to increase the total volume of the feedback medium and make it have a more obvious pushing effect on the piston rod when it expands and contracts with heat, the bottle body includes a spherical cavity and a cylindrical bottleneck connected to one side thereto, and the piston rod is slidably disposed in the bottleneck.

[0013] As a preferred embodiment, in order to enable the early warning device to be embedded inside the grain for use, thereby increasing its monitoring and early warning effect and preventing the grain from squeezing the bottle and affecting the change in the volume of the internal feedback medium, the early warning device also includes a protective cylinder. The detection component is fixed inside the protective cylinder, and the protective cylinder is provided with ventilation holes.

[0014] As a further preferred embodiment, the power supply mechanism includes a battery holder with a removable battery inside, making power replacement more convenient.

[0015] The beneficial effects of this utility model are as follows: This utility model is a mechanical grain silo temperature early warning device. When the grain silo temperature meets the storage conditions for grain, the strain gauge and the contact head are separated, and the circuit is in an open circuit state. When the internal temperature of the grain silo is too high, the feedback medium expands due to heat, which can push the piston rod to move. Then, the piston rod pushes the strain gauge to contact the contact head, and the circuit is switched to a closed circuit. The alarm is activated through the alarm. This method of controlling the trigger unit through the mechanical action of the feedback unit allows the circuit to switch between open and closed circuits due to the influence of ambient temperature. At the same time, current flows in the circuit only in the closed state, and the temperature early warning is activated on-site through the alarm, effectively ensuring the service life of the early warning device. Attached Figure Description

[0016] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the early warning device in the embodiment;

[0019] Figure 2 This is a schematic diagram of the detection mechanism in the embodiment;

[0020] Figure 3 This is a schematic diagram of the internal structure of the detection mechanism in the embodiment;

[0021] Figure 4 This is a schematic diagram of the detection component in the embodiment;

[0022] Figure 5 for Figure 4 A magnified schematic diagram of the partial structure at point A in the middle;

[0023] Figure 6 This is the main view of the detection component in the embodiment;

[0024] The components represented by the various reference numerals in the diagram are:

[0025] 1. Power supply mechanism; 2. Detection mechanism; 21. Detection component; 211. Feedback unit; 2111. Bottle body; 2112. Piston rod; 2113. Fixing base; 212. Triggering unit; 2121. Connecting column; 2122. Strain gauge; 2123. Connecting rod; 2124. Slide rod; 2125. Adjustment knob; 2126. Contact head; 22. Protective cylinder; 221. First cylinder; 222. Second cylinder; 223. Fixing plate; 224. Conical head; 3. Alarm; 4. Wire. Detailed Implementation

[0026] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0027] Example

[0028] This embodiment provides a mechanical grain silo temperature early warning device, see [link to documentation]. Figure 1 The device includes a power supply mechanism 1 and a detection mechanism 2 electrically connected to it via a wire 4. An alarm 3 is also connected in series on the wire 4. In use, the detection mechanism 2 is placed inside the grain silo, while the alarm 3 and the power supply mechanism 1 are placed outside. The detection mechanism 2 can monitor the temperature inside the grain silo. When the temperature inside the grain silo is too high, the alarm 3 can trigger an alarm. The structure of the early warning device (the above-mentioned mechanical grain silo temperature early warning device) will be described in more detail below with reference to the accompanying drawings.

[0029] In this embodiment, the power supply mechanism 1 includes a battery holder with a removable battery inside, making power replacement more convenient.

[0030] In this embodiment, combined with Figure 2 and Figure 3 As the core technical concept of this utility model, the detection mechanism 2 includes a detection component 21, which includes a feedback unit 211 and a trigger unit 212 disposed thereon. The feedback unit 211 is configured to sense the temperature information inside the grain silo and drive the trigger unit 212 to work when the temperature is too high. Finally, the trigger unit 212 controls the alarm 3 to perform the alarm function.

[0031] Combination Figures 4-6 Furthermore, the feedback unit 211 includes a bottle body 2111, which contains a feedback medium and a piston rod 2112 that can slide due to the thermal expansion and contraction of the feedback medium. The triggering unit 212 includes a strain gauge 2122 disposed at the opening of the bottle body 2111 and a contact head 2126 disposed with a gap between the strain gauge 2122 and the strain gauge 2122. The positive and negative poles of the power supply mechanism 1 are respectively connected to the strain gauge 2122 and the contact head 2126, and the piston rod 2112 is configured to push the strain gauge 2122 and the contact head 2126 into contact.

[0032] Based on the above structure, when the temperature of the grain silo meets the storage conditions for grain, the strain gauge 2122 and the contact head 2126 are separated, and the circuit is in an open circuit state. When the temperature inside the grain silo is too high, the feedback medium expands due to heat, which can push the piston rod 2112 to move. Then, the piston rod 2112 pushes the strain gauge 2122 to contact the contact head 2126, and the circuit is switched to a closed circuit. The alarm is activated by the alarm 3. This method of controlling the operation of the triggering unit 212 by the mechanical action of the feedback unit 211 makes the operation of the feedback unit 211 unaffected by environmental factors other than temperature. The triggering operation is more stable and reliable. Moreover, the circuit can switch between open and closed circuits due to the influence of ambient temperature. At the same time, current flows in the circuit only in the closed state, and the temperature warning is realized on site through the alarm 3, which effectively ensures the service life of the warning device.

[0033] To further explain the structure of the feedback unit 211, in order to increase the total volume of the feedback medium so that it can have a more obvious pushing effect on the piston rod 2112 when it expands and contracts with heat, the bottle body 2111 includes a spherical cavity and a cylindrical bottleneck that is vertically arranged on its upper side and connected to it at its lower end. The piston rod 2112 is slidably disposed in the bottleneck.

[0034] Furthermore, the piston rod 2112 includes a plunger that slides vertically within the bottleneck, and a push rod is vertically coaxially provided on its upper side, through which the strain gauge 2122 can be pushed.

[0035] As a preferred embodiment, in order to reduce the impact of thermal expansion and contraction on the volume change of the internal feedback medium, the bottle body 2111 is made of ceramic, carbon fiber or glass, preferably glass, so as to facilitate observation of the state of the internal feedback medium during maintenance.

[0036] As a further preferred embodiment, in order to ensure the thermal expansion and contraction effect of the feedback medium, and thus ensure that the strain gauge 2122 can be smoothly deformed through its thermal expansion and contraction, the feedback medium is water, ethanol or gasoline, preferably water, so as to reduce the impact of the evaporation of the feedback medium on the triggering conditions of the early warning device.

[0037] Further, regarding the structure and installation method of the trigger unit 212, a fixed seat 2113 is provided on both sides of the bottle neck, i.e., on both outer sides of the upper end of the bottle neck. The trigger unit 212 also includes a connecting column 2121 vertically disposed on the upper side of one of the fixed seats 2113. The strain gauge 2122 is horizontally disposed, with one end connected to the upper end of the connecting column 2121 and the other end suspended above the bottle neck. The contact is mounted above the end of the strain gauge 2122 away from the connected end through a connecting bracket. By moving the piston rod 2112 upward, the end of the strain gauge 2122 away from the connecting column 2121 can be pushed upward to bend, thereby contacting the contact head 2126 to convert the circuit into a closed circuit, and complete the high temperature alarm work through the alarm 3.

[0038] As a preferred embodiment, in order to enable the early warning device to perform early warning work at different trigger temperatures according to different grain storage temperature requirements, the strain gauge 2122 is fixed to the outer end of the bottleneck, and the distance between the contact head 2126 and the strain gauge 2122 along the bottleneck axis is adjustable.

[0039] Specifically, the connecting frame includes a connecting rod 2123 vertically mounted on a fixed base 2113 opposite to the connecting column 2121. A sliding rod is horizontally mounted on the side of the connecting rod 2123 near the strain gauge 2122. One end of the sliding rod is vertically slidably connected to the connecting rod 2123. A threaded rod is vertically and rotatably mounted inside the sliding rod and is helically connected to the sliding rod. The upper end of the threaded rod extends out of the connecting rod 2123 and is equipped with an adjustment knob 2125. The contact head 2126 is mounted on the sliding rod. By adjusting the knob 2125, the sliding rod can be driven to slide, thereby driving the contact head 2126 to move, realizing the adjustment of the distance between the contact head 2126 and the strain gauge 2122.

[0040] As a further preferred embodiment, in order to ensure the conductivity and elasticity of the strain gauge 2122 so that the strain gauge 2122 can detach from the contact head 2126 on its own when the temperature inside the grain silo drops, the strain gauge 2122 is made of steel.

[0041] Preferably, in order to enable the strain gauge 2122 to be pushed more smoothly by the piston rod 2112, and to further ensure the elasticity of the strain gauge 2122, the thickness of the strain gauge 2122 is 0.2-0.7mm.

[0042] In this embodiment, in order to enable the early warning device to be embedded inside the grain for use, increase its monitoring and early warning effect, and prevent the grain from squeezing the bottle 2111 and affecting the change in the volume of the internal feedback medium, the early warning device also includes a protective cylinder 22. The detection component 21 is fixed inside the protective cylinder 22, and the protective cylinder 22 is provided with a vent hole.

[0043] Specifically, the protective cylinder 22 includes a first cylinder 221 and a second cylinder 222 arranged coaxially at the top and bottom. A fixing plate 223 is horizontally arranged between the two cylinders. The upper end of the bottleneck is fixed to the fixing plate 223 so that the feedback unit 211 is located inside the second cylinder 222 and the trigger unit 212 is located inside the first cylinder 221. The upper end of the first cylinder 221 is closed. The wire 4 passes through the upper end of the first cylinder 221 and is electrically connected to the trigger unit 212 inside. Multiple vent holes are densely distributed on the cylinder wall of the second cylinder 222.

[0044] As a preferred embodiment, in order to facilitate the placement of the warning device inside the grain, the lower end of the second cylinder 222 is also provided with a conical head 224 that allows the warning device to be easily inserted into the grain.

Claims

1. A mechanical grain warehouse temperature early warning device, characterized in that, Includes a power supply mechanism (1) and a detection component (21) electrically connected to it via a wire (4); The detection component (21) includes a feedback unit (211) and a trigger unit (212) disposed thereon; The feedback unit (211) includes a bottle body (2111), which contains a feedback medium and a piston rod (2112) that can slide due to the thermal expansion and contraction of the feedback medium. The triggering unit (212) includes a strain gauge (2122) disposed at the mouth of the bottle body (2111) and a contact head (2126) disposed with a gap between the strain gauge (2122). The positive and negative poles of the power supply mechanism (1) are connected to the strain gauge (2122) and the contact head (2126) respectively, and the piston rod (2112) is configured to push the strain gauge (2122) and the contact head (2126) into contact. An alarm (3) is also connected in series on the wire (4).

2. The mechanical grain silo temperature early warning device according to claim 1, characterized in that, The strain gauge (2122) is fixed to the outer end of the bottleneck, and the distance between the contact head (2126) and the strain gauge (2122) along the axis of the bottleneck is adjustable.

3. The mechanical grain warehouse temperature early warning device according to claim 1, characterized in that, The strain gauge (2122) is made of steel.

4. A mechanical grain storage temperature early warning device according to claim 3, characterized in that, The thickness of the strain gauge (2122) is 0.2-0.7 mm.

5. A mechanical grain silo temperature early warning device according to claim 1, characterized in that, The bottle body (2111) is made of ceramic, carbon fiber or glass.

6. A mechanical grain silo temperature early warning device according to claim 1, characterized in that, The feedback medium is water, ethanol, or gasoline.

7. A mechanical grain storage temperature early warning device according to any one of claims 1-6, characterized in that, The bottle body (2111) includes a spherical cavity and a cylindrical bottleneck connected to one side thereof, and the piston rod (2112) is slidably disposed within the bottleneck.

8. A mechanical grain silo temperature early warning device according to any one of claims 1-6, characterized in that, It also includes a protective cylinder (22), the detection component (21) is fixed inside the protective cylinder (22), and the protective cylinder (22) is provided with a vent hole.

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