A device for monitoring the material height of a cement tank

Abstract

The present invention discloses a device for monitoring the material height of a cement tank, which relates to the technical field of cement tanks and includes a cement tank body. The interior of the cement tank body is provided with a temperature control mechanism, a stirring mechanism, a cleaning mechanism, a distance measuring mechanism, and a controller. The temperature control mechanism is connected to the cement tank body, the stirring mechanism is connected to the cement tank body, the cleaning mechanism is connected to the stirring mechanism, and the distance measuring mechanism is connected to the stirring mechanism. The cement tank body includes a storage tank body, the bottom of the storage tank body is fixedly connected to a frame, one side of the storage tank body is fixedly connected to an inspection ladder, the bottom of the storage tank body is provided with a discharge port, and the top of the storage tank body is provided with a feed port. The present invention compacts the material inside the cement tank body by providing a distance measuring mechanism and a stirring mechanism, reduces the influence of bubbles between the materials inside the cement tank body on the material height measurement, and improves the accuracy of the material height measurement of the device.

Description

Technical Field

[0001] The invention relates to the technical field of cement tanks, in particular to a device for monitoring the material height of a cement tank. Background Art

[0002] Cement tanks, also known as cement silos, are generally used for bulk cement storage in concrete mixing plants and are suitable for storing various bulk building materials such as cement and fly ash.

[0003] The cement tank is placed vertically, and a discharge port is provided at the bottom of the tank. The material stored inside the tank is pumped out from the bottom of the tank through a pump. When the cement tank is storing and taking cement, the mixed state of the cement easily sticks to the inner wall of the tank, and bubbles are present in the cement, which affects the user's detection of the material height inside the cement tank and reduces the utilization rate of the internal space of the tank. Summary of the Invention

[0004] The object of the present invention is to provide a device for monitoring the material height of a cement tank to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for monitoring the material level of a cement tank, comprising a cement tank body, wherein a temperature control mechanism, a stirring mechanism, a cleaning mechanism, a distance measuring mechanism and a controller are provided inside the cement tank body, wherein the temperature control mechanism is connected to the cement tank body, the stirring mechanism is connected to the cement tank body, the cleaning mechanism is connected to the stirring mechanism, and the distance measuring mechanism is connected to the stirring mechanism;

[0006] The cement tank body includes a storage tank body, the bottom of the storage tank body is fixedly connected to a frame body, one side of the storage tank body is fixedly connected to a maintenance ladder, the bottom of the storage tank body is provided with a discharge port, the top of the storage tank body is provided with a feed port, and the inner wall of the storage tank body is provided with a slide groove.

[0007] The stirring mechanism includes a screw, the bottom end of which is fixedly connected to a stirring rod, and one end of which is movably connected to a stirring blade. A drive motor is provided on the top of the cement tank, and the output shaft of the drive motor is fixedly connected to the top end of the screw via a coupling. The drive motor drives the screw to rotate, and the screw drives the stirring rod to mix the cement, thereby preventing the cement from solidifying.

[0008] The sensor is a force-sensitive sensor, and the distance measuring mechanism includes a rotating plate. A push rod is hinged on one side of the rotating plate. A sensor is provided at one end of the push rod. One end of the sensor is connected to the stirring mechanism via a support rod. A sleeve is provided on the outside of the push rod. The other end of the sensor is sleeved with the sleeve. A spring is provided between the sleeve and the push rod. The controller is located on the top of the cement tank and is electrically connected to the sensor. Through the coordination of the rotating plate, sensor, sleeve, push rod and spring, the rotating plate can be deflected along one side of the stirring blade. When the rotating plate contacts the material, the rotating plate deflects and at the same time, the rotating plate pushes the push rod to squeeze the sensor, and the sensor transmits an electrical signal to the controller. When the rotating plate is separated from the material, the spring pushes the push rod away from the sensor, and the push rod no longer squeezes the sensor, causing the sensor to transmit an electrical signal to the controller.

[0009] The cleaning mechanism includes a threaded sleeve, the inner wall of which is threadedly connected to the screw, a scraper ring fixedly connected to the outer wall of the threaded sleeve, a block fixedly connected to the outer wall of the scraper ring, the scraper ring connected to the storage tank body, and the block slidingly connected to the chute. The threaded sleeve drives the scraper ring upward or downward through the rotation of the screw and the positioning of the block by the chute, and the scraper ring fits against the inner wall of the storage tank body, allowing the scraper ring to clean sticky cement and prevent cement from solidifying on the inner wall of the storage tank body.

[0010] A fixed ferrule is fixedly connected to one side of the threaded ferrule, and a scraper is fixedly connected to the inner wall of the fixed ferrule. A through-hole is formed in the outer wall of the fixed ferrule, and one side of the scraper engages with the screw, with the through-hole adjacent to the scraper. The screw rotates along the inner wall of the threaded ferrule, allowing the scraper on the inner wall of the fixed ferrule to clean cement stuck to the screw surface, preventing the cement from affecting the movement of the threaded ferrule and the stirring blade.

[0011] The temperature control mechanism includes a heating coil, an induction switch, a relay, and an indicator light. Several heating coils are provided, equidistantly spaced vertically inside the storage tank. The heating coils heat the cement inside the tank to prevent freezing of the cement inside the tank due to low ambient temperature.

[0012] There are multiple induction switches and indicator lights, each equidistantly positioned vertically on the outer wall of the storage tank. The tank has multiple indicator holes located within the chute, and the induction switches are slidably mounted within the holes. The indicator lights are connected in series with the induction switches. When the screw rotates, the threaded sleeve drives the clamping block downward, squeezing the induction switch on the inner wall of the chute. This squeezing of the induction switch connects the circuit of the indicator light, which then illuminates the indicator light on the outer wall of the storage tank. The approximate height of the material inside the storage tank can be determined by observing the height of the indicator lights.

[0013] The relay is a normally closed temperature relay, and there are several such relays, connected in parallel with the heating coil. The relay controls the heating coil according to the ambient temperature of the storage tank. The heating coil, the induction switch, and the indicator light are connected in series in the circuit. When the ambient temperature is suitable, the relay closes, short-circuiting the heating coil, causing the induction switch to light up the indicator light. When the ambient temperature is too low, the relay opens, allowing the heating coil to operate, preventing the material inside the storage tank from freezing.

[0014] The threaded ferrule is connected to the stirring blade, and there are three distance measuring mechanisms, which are arranged in a circular manner and equidistantly on one side of the stirring blade. The drive motor is electrically connected to the controller. The stirring blade is driven to rotate by a screw, and the stirring blade rotates to squeeze and compact the material on the bottom layer. At the same time, the cleaning mechanism drives the stirring blade to rise, causing the material to squeeze and deflect the rotating plate. When the sensor loses the squeeze, the controller stops the rotation of the drive motor and calculates the number of revolutions of the drive motor from the bottom of the storage tank to accurately determine the material height.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This device for monitoring the material height of a cement tank compacts the material inside the cement tank through the setting of a distance measuring mechanism and a stirring mechanism, reducing the influence of bubbles between the materials inside the cement tank on the material height measurement, and improving the accuracy of the device for material height measurement;

[0017] 2. This device for monitoring the material height of a cement tank reduces the adhesion of materials to the inner wall of the cement tank through the provision of a cleaning mechanism and a stirring mechanism, making it easier for users to clean the cement tank and further improving the accuracy of the device in measuring the material height inside the cement tank.

[0018] 3. The device for monitoring the material height of the cement tank, through the setting of the temperature control mechanism and the cleaning mechanism, enables the device to adjust the temperature inside the cement tank according to the ambient temperature, thereby avoiding the problem of material freezing caused by the ambient temperature being too low. At the same time, the card block triggers the induction switch, so that the heating coil works according to the height of the material inside the cement tank, reducing the energy consumption of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a side structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the top structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the front cross-sectional structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection structure of the stirring mechanism and the cleaning mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the connection structure between the fixed sleeve and the screw rod of the present invention;

[0026] Figure 7 This is a schematic diagram of the connection structure between the stirring blade and the threaded sleeve of the present invention;

[0027] Figure 8 This is a schematic diagram of the connection structure between the scraper plate and the fixed sleeve of the present invention;

[0028] Figure 9 It is a schematic side sectional view of the cleaning mechanism of the present invention;

[0029] Figure 10 It is a schematic side sectional structure diagram of the distance measuring mechanism of the present invention;

[0030] Figure 11 It is the circuit diagram of the temperature control mechanism of the present invention;

[0031] Figure 12 This invention Figure 10 Enlarged view of point A in the middle.

[0032] In the figure: 1. Cement tank body; 101. Storage tank body; 102. Maintenance ladder; 103. Frame; 104. Discharge port; 105. Feed port; 106. Chute; 2. Temperature control mechanism; 201. Heating coil; 202. Induction switch; 203. Relay; 204. Indicator light; 3. Stirring mechanism; 301. Screw; 302. Stirring blade; 303. Stirring rod; 304. Drive motor; 4. Cleaning mechanism; 401. Scraper clamp; 402. Block; 403. Threaded sleeve; 404. Fixed sleeve; 405. Scraper plate; 406. Through hole; 5. Distance measuring mechanism; 501. Rotating plate; 502. Sensor; 503. Sleeve; 504. Push rod; 505. Spring; 6. Controller. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1-12 The present invention provides a technical solution: a device for monitoring the material level of a cement tank, comprising a cement tank body 1, wherein a temperature control mechanism 2, a stirring mechanism 3, a cleaning mechanism 4, and a distance measuring mechanism 5 are provided inside the cement tank body 1, wherein the temperature control mechanism 2 is connected to the cement tank body 1, the stirring mechanism 3 is connected to the cement tank body 1, the cleaning mechanism 4 is connected to the stirring mechanism 3, and the distance measuring mechanism 5 is connected to the stirring mechanism 3;

[0035] The cement tank body 1 includes a storage tank body 101, a frame body 103 is fixedly connected to the bottom of the storage tank body 101, a maintenance ladder 102 is fixedly connected to one side of the storage tank body 101, a discharge port 104 is opened at the bottom of the storage tank body 101, a feed port 105 is opened at the top of the storage tank body 101, and a chute 106 is opened on the inner wall of the storage tank body 101;

[0036] The temperature control mechanism 2 includes a heating coil 201, an induction switch 202, a relay 203 and an indicator light 204. There are several heating coils 201, and the heating coils 201 are vertically and equidistantly arranged inside the storage tank body 101. The heating coils control the temperature and heat the cement inside the storage tank body 101 to avoid the problem of cement freezing inside the storage tank body 101 due to the low ambient temperature.

[0037] There are several induction switches 202 and indicator lights 204. The indicator lights 204 are vertically and equidistantly arranged on the outer wall of the storage tank body 101. The storage tank body 101 has several indicating through holes at the position of the slide 106. The induction switch 202 is slidably installed in the indicating through hole. The indicator light 204 is connected in series with the induction switch 202. When the screw rod 301 rotates, the threaded sleeve 403 drives the block 402 to move downward. The block 402 squeezes the induction switch 202 on the inner wall of the slide. After the induction switch 202 is squeezed, the circuit of the indicator light 204 is connected, and then the indicator light 204 on the outer wall of the storage tank body 101 is controlled to light up. The approximate height of the material inside the storage tank body 101 is judged by observing the height of the indicator light 204.

[0038] Relay 203 is a normally closed temperature relay. There are several relays 203. Relay 203 is connected in parallel with the heating coil 201. Relay 203 and heating coil 201 are connected in parallel in the circuit. Relay 203 controls the heating coil 201 according to the ambient temperature of the storage tank 101. The heating coil 201, the induction switch 202 and the indicator light 204 are connected in series in the circuit. When the ambient temperature is suitable, the relay 203 is closed to short-circuit the heating coil 201, so that the induction switch 202 controls the indicator light 204 to light up. When the ambient temperature is too low, the relay 203 is disconnected, so that the heating coil 201 works, thereby avoiding freezing of the material inside the storage tank 101.

[0039] The stirring mechanism 3 includes a screw rod 301, the bottom end of the screw rod 301 is fixedly connected to a stirring rod 303, one end of the screw rod 301 is movably connected to a stirring blade 302, and a driving motor 304 is provided on the top of the cement tank body 1. The output shaft of the driving motor 304 is fixedly connected to the top end of the screw rod 301 through a coupling. The screw rod 301 is driven to rotate by the driving motor 304, and the screw rod 301 drives the stirring rod 303 to mix the cement to avoid the problem of cement coagulation.

[0040] The cleaning mechanism 4 includes a threaded sleeve 403, the inner wall of the threaded sleeve 403 is threadedly connected to the screw rod 301, the outer wall of the threaded sleeve 403 is fixedly connected to a scraper clamping ring 401, the outer wall of the scraper clamping ring 401 is fixedly connected to a clamping block 402, the scraper clamping ring 401 is connected to the storage tank body 101, the clamping block 402 slides with the slide groove 106, and through the rotation of the screw rod 301 and the limitation of the clamping block 402 by the slide groove 106, the threaded sleeve 403 drives the scraper clamping ring 401 to move up or down, and the scraper clamping ring 401 fits against the inner wall of the storage tank body 101, so that the scraper clamping ring 401 cleans the sticky cement and prevents the cement from condensing on the inner wall of the storage tank body 101.

[0041] The clamping block 402 is movably connected to the induction switch 202, and the clamping block 402 on one side of the scraper clamping ring 401 is driven to move synchronously by the screw rod 301. The clamping block 402 squeezes the induction switch 202 on the inner wall of the chute 106, and then controls the indicator light 204 on the outer wall of the storage tank body 101 to light up. The approximate height of the material inside the storage tank body 101 is judged by observing the height of the indicator light 204.

[0042] One side of the threaded sleeve 403 is fixedly connected to a fixed sleeve 404, and the inner wall of the fixed sleeve 404 is fixedly connected to a scraper plate 405. The outer wall of the fixed sleeve 404 is provided with a through hole 406. One side of the scraper plate 405 is in contact with the screw rod 301, and the through hole 406 is adjacent to the scraper plate 405. The screw rod 301 rotates along the inner wall of the threaded sleeve 403, so that the scraper plate 405 on the inner wall of the fixed sleeve 404 cleans the cement stuck on the surface of the screw rod 301, thereby preventing the cement from affecting the movement of the threaded sleeve 403 and the stirring blade 302.

[0043] There are three distance measuring mechanisms 5, and the distance measuring mechanisms 5 are arranged in a ring with equal distances on one side of the stirring blade 302. The distance measuring mechanism 5 includes a rotating plate 501, and a push rod 504 is hinged on one side of the rotating plate 501. One end of the push rod 504 is movably connected to a spring 505, one end of the push rod 504 is fixedly connected to a sleeve 503, and one end of the push rod 504 is movably connected to a sensor 502.

[0044] The controller 6 is located on the top of the cement tank 1 . The controller 6 is electrically connected to the sensor 502 . The drive motor 304 is electrically connected to the controller 6 .

[0045] The sensor 502 is a force-sensitive sensor. One end of the sensor 502 is connected to the stirring mechanism 3 through a support rod. A sleeve 503 is provided on the outside of the push rod 504. The other end of the sensor 502 is sleeved with the sleeve 503. A spring 505 is provided between the sleeve 503 and the push rod 504. Through the cooperation of the rotating plate 501, the sensor 502, the sleeve 503, the push rod 504 and the spring 505, the rotating plate 501 can be deflected along one side of the stirring blade 302. When the rotating plate 501 contacts the material, the rotating plate 501 deflects, and at the same time, the rotating plate 501 pushes the push rod 504 to squeeze the sensor 502, and the sensor 502 transmits the electrical signal to the controller 6; when the rotating plate 501 is separated from the material, the spring 505 pushes the push rod 504 away from the sensor 502, and the push rod 504 no longer squeezes the sensor 502, so that the sensor 502 transmits the electrical signal to the controller 6.

[0046] The threaded sleeve 403 is connected to the stirring blade 302 through a bearing, and the stirring blade 302 is driven to rotate by the screw rod 301. While the stirring blade 302 rotates, it squeezes and compacts the material on the bottom layer. At the same time, the cleaning mechanism 4 drives the stirring blade 302 to rise, so that the material squeezes and deflects the rotating plate 501. When the sensor 502 loses the squeeze, the controller 6 stops the rotation of the drive motor 304. By calculating the number of revolutions of the drive motor 304 rising from the bottom of the storage tank body 101, the accurate material height is obtained.

[0047] Working principle of the present invention:

[0048] The material is poured into the storage tank body 101 through the feed port 105, and the motor is started to drive the screw rod 301 to rotate. The stirring rod 303 at the bottom end of the screw rod 301 stirs the material at the bottom of the storage tank body 101, and the screw rod 301 rotates along the inner wall of the threaded sleeve 403. The block 402 connected to one side of the threaded sleeve 403 limits the moving direction of the scraper clamping ring 401, so that the scraper clamping ring 401 moves along the inner wall of the slide groove 106 through the block 402. The threaded sleeve 403 drives the stirring blade 302 connected to one side of the bearing to move synchronously, so that the screw rod 301 drives the stirring blade 302 to rotate. The stirring blade 302 rises while rotating, so that the stirring blade 302 compacts the bottom material and squeezes out the gas in the material;

[0049] When the stirring blade 302 rotates, it drives the rotating plate 501 hinged on one side of the stirring blade 302 to deflect, so that the rotating plate 501 pushes the push rod 504 hinged on one side at the same time, and the push rod 504 moves along the inner wall of the sleeve 503, so that one end of the push rod 504 squeezes the sensor 502. When the rotating plate 501 at the bottom of the stirring blade 302 is out of contact with the material, the rotating plate 501 loses pressure, and the spring 505 pushes the rotating plate 501 to return to its original position. At the same time, the spring 505 pushes the push rod 504 away from the sensor 502. The sensor 502 transmits an electrical signal to the controller 6. The controller 6 controls the rotation of the drive motor 304 and calculates the height of the material by calculating the number of revolutions of the screw rod 301 driven by the drive motor 304.

[0050] As the threaded sleeve 403 moves, the scraper ring 401 on the outer wall moves. The scraper ring 401 fits against the inner wall of the storage tank 101, allowing the scraper ring 401 to clean the sticky cement and prevent the cement from condensing on the inner wall of the storage tank 101. At the same time, the scraper plate 405 on the inner wall of the fixed sleeve 404 cleans the cement stuck on the surface of the screw rod 301, preventing the material from affecting the movement of the threaded sleeve 403 and the stirring blade 302.

[0051] As the scraper clamping ring 401 rises, the block 402 on one side of the scraper clamping ring 401 triggers the induction switch 202 on the inner wall of the chute 106, so that the indicator light 204 on the outer wall of the storage tank body 101 lights up. By observing the height of the indicator light 204, the height of the material inside the storage tank body 101 can be understood;

[0052] When the cement tank 1 is storing materials, the relay 203 is connected in parallel with the heating coil 201 in the circuit. The relay 203 is specifically a normally closed temperature relay. The relay 203 controls the heating coil 201 according to the ambient temperature of the storage tank 101. The heating coil 201, the induction switch 202 and the indicator light 204 are connected in series in the circuit. When the ambient temperature is suitable, the relay 203 is closed to short-circuit the heating coil 201, so that the induction switch 202 controls the indicator light 204 to light up. When the ambient temperature is too low, the relay 203 is disconnected, and the induction switch 202 is triggered while the block 402 slides along the slide 106. According to the height at which the induction switch 202 is triggered, the heating coil 201 is controlled to work, thereby preventing the material inside the storage tank 101 from freezing.

[0053] When the material in the storage tank 101 needs to be discharged, the discharge port 104 is opened, and the drive motor 304 is started to drive the screw 301 to rotate in the opposite direction, so that the threaded sleeve 403 drives the stirring blade 302 to move downward, and the stirring blade 302 rotates along the screw 301 to squeeze the material downward. At the same time, the scraper ring 401 scrapes off the material adhered to the inner wall of the storage tank 101, thereby assisting the rapid discharge of the material inside the storage tank 101.

[0054] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for monitoring the material level of a cement tank, comprising a cement tank body (1), characterized in that: The cement tank body (1) is provided with a temperature control mechanism (2), a stirring mechanism (3), a cleaning mechanism (4), a distance measuring mechanism (5) and a controller (6); the temperature control mechanism (2) is connected to the cement tank body (1); the stirring mechanism (3) is connected to the cement tank body (1); the cleaning mechanism (4) is connected to the stirring mechanism (3); and the distance measuring mechanism (5) is connected to the stirring mechanism (3); The cement tank body (1) comprises a material storage tank body (101), a frame body (103) is fixedly connected to the bottom of the material storage tank body (101), a maintenance ladder (102) is fixedly connected to one side of the material storage tank body (101), a discharge port (104) is provided at the bottom of the material storage tank body (101), a feed port (105) is provided at the top of the material storage tank body (101), and a chute (106) is provided on the inner wall of the material storage tank body (101); The stirring mechanism (3) comprises a screw (301), the bottom end of the screw (301) is fixedly connected to a stirring rod (303), one end of the screw (301) is movably connected to a stirring blade (302), a driving motor (304) is provided on the top of the cement tank (1), and the output shaft of the driving motor (304) is fixedly connected to the top end of the screw (301) via a coupling; The distance measuring mechanism (5) comprises a rotating plate (501), a push rod (504) is hingedly connected to one side of the rotating plate (501), a sensor (502) is provided at one end of the push rod (504), one end of the sensor (502) is connected to the stirring mechanism (3) through a support rod, a sleeve (503) is provided on the outside of the push rod (504), the other end of the sensor (502) is sleeved with the sleeve (503), a spring (505) is provided between the sleeve (503) and the push rod (504), the controller (6) is located at the top of the cement tank body (1), and the controller (6) is electrically connected to the sensor (502); The distance measuring mechanism (5) is arranged in an annular manner and equidistantly on one side of the stirring blade (302), and the driving motor (304) is electrically connected to the controller (6); Through the cooperation of the rotating plate (501), the sensor (502), the sleeve (503), the push rod (504) and the spring (505), the rotating plate (501) can be deflected along one side of the stirring blade (302).

2. The device for monitoring the material level of a cement tank according to claim 1, characterized in that: The cleaning mechanism (4) comprises a threaded sleeve (403), the inner wall of the threaded sleeve (403) is threadedly connected to the screw rod (301), the outer wall of the threaded sleeve (403) is fixedly connected to a scraper clamping ring (401), the outer wall of the scraper clamping ring (401) is fixedly connected to a clamping block (402), the scraper clamping ring (401) is connected to the material storage tank body (101), and the clamping block (402) slides with the slide groove (106).

3. The device for monitoring the material level of a cement tank according to claim 2, characterized in that: One side of the threaded sleeve (403) is fixedly connected to a fixed sleeve (404), the inner wall of the fixed sleeve (404) is fixedly connected to a scraper (405), the outer wall of the fixed sleeve (404) is provided with a through hole (406), one side of the scraper (405) is in contact with the screw rod (301), and the through hole (406) is adjacent to the scraper (405).

4. The device for monitoring the material level of a cement tank according to claim 1, characterized in that: The temperature control mechanism (2) comprises a heating coil (201), an induction switch (202), a relay (203) and an indicator light (204). A plurality of heating coils (201) are provided, and the heating coils (201) are vertically and equidistantly arranged inside the storage tank (101).

5. The device for monitoring the material level of a cement tank according to claim 4, characterized in that: The induction switch (202) and the indicator light (204) are both provided in a plurality, and the indicator lights (204) are vertically and equidistantly provided on the outer wall of the storage tank body (101). The storage tank body (101) is provided with a plurality of indicator through holes at the position of the chute (106), and the induction switch (202) is slidably installed in the indicator through holes, and the indicator lights (204) are connected in series with the induction switch (202).

6. The device for monitoring the material level of a cement tank according to claim 4, characterized in that: A plurality of relays (203) are provided, and the relays (203) are connected in parallel with the heating coil (201).

7. The device for monitoring the material level of a cement tank according to claim 2, characterized in that: The threaded sleeve (403) is connected to the stirring blade (302), and the number of the distance measuring mechanisms (5) is three.

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