Teflon heater with water shortage protection function

Abstract

The invention belongs to the technical field of electric heaters, and particularly relates to a Teflon heater with water shortage protection, which comprises a connecting seat, the bottom of the connecting seat is fixedly connected with an electric heater, the electric heater is composed of a connecting part and a heating part, and a temperature sensor is arranged at the joint of the connecting part and the heating part in the electric heater. A connecting wire is arranged on the outer surface of the connecting base, and a water shortage protection device is arranged at the end, away from the connecting base, of the connecting wire; water in the container can be heated through the arranged electric heater, the temperature sensor arranged in the electric heater can detect the water temperature, when water is injected and the water temperature changes, it is indicated that the water level reaches the heatable water temperature at the moment, and when water is heated and the temperature detected by the temperature sensor changes suddenly, the electric heater is started to heat the water. Water shortage protection can be carried out on the electric heater through the arranged water shortage protection device, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electric heaters, in particular to a Teflon heater with water shortage protection. BACKGROUND

[0002] An electric heater refers to an electric appliance that uses electric energy to achieve heating effect. It has small size, high heating power, and is widely used. It adopts intelligent control mode, has high temperature control precision, can be connected to a computer network, has wide application range, long service life, and high reliability. The core of the heater principle is energy conversion, the most widely used of which is the conversion of electric energy into heat energy. The heater is a commonly used electric heating device.

[0003] Among them, the Teflon heater has been widely used in many fields due to its unique advantages. In the chemical industry, it is commonly used for reaction kettle heating, pipeline heat tracing, and distillation column heating, etc., to ensure that the chemical reaction is carried out at a suitable temperature, improve production efficiency and product quality. In the electroplating industry, it is used for electrolyte heating and plating bath temperature control to ensure the stability of the electroplating process and the quality of the plating layer. In the food industry, indirect Teflon heaters can achieve food processing heat treatment and beverage production line heating, avoid medium pollution, and ensure food safety. In the pharmaceutical industry, it is used for drug production sterilization and laboratory instrument heating due to its high cleanliness. With the continuous upgrading of downstream industries, the performance requirements for Teflon heaters are becoming higher and higher, prompting continuous improvement and innovation of technology.

[0004] However, the traditional Teflon heater lacks effective water shortage protection mechanism. When the device leaks water or water is not replenished in time, etc., leading to water shortage, the heater will continue to work. Since water has good thermal conductivity, in the presence of water, heat can be dissipated in time, keeping the temperature of the heater within a reasonable range. However, when there is a lack of water, the heat generated by the heating element cannot be dissipated in time, causing the local temperature to rise sharply, far exceeding the tolerance temperature of Teflon material and heating element, thereby damaging the heater and shortening its service life.

[0005] Therefore, the application provides a Teflon heater with water shortage protection. SUMMARY

[0006] In order to make up for the shortcomings of the prior art and solve at least one technical problem raised in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the iron-fluorine heater with water shortage protection comprises a connecting seat, an electric heater is fixedly connected to the bottom of the connecting seat, the electric heater is composed of a connecting part and a heating part, a temperature sensor is arranged at the connecting part and the heating part of the electric heater, a connecting line is arranged on the outer surface of the connecting seat, a water shortage protection device is arranged at the end of the connecting line away from the connecting seat, the water shortage protection device is used for protecting the electric heater, the water shortage protection device is composed of a shell and a circuit board electronic protector, and the electric heater and the temperature sensor are electrically connected to the water shortage protection device through wires.

[0008] Preferably, the heating part adopts a spiral mechanism, and the heating part further comprises a stainless steel shell, an iron-fluorine sleeve, a three-hole magnesium oxide column, three conductive rods and a filler layer, the three conductive rods are all connected in the three-hole magnesium oxide column, the iron-fluorine sleeve is sleeved outside the three-hole magnesium oxide column, the stainless steel shell is sleeved outside the iron-fluorine sleeve, and the filler layer is filled between the iron-fluorine sleeve and the three-hole magnesium oxide column.

[0009] Preferably, a thimble is fixedly connected to the connecting part.

[0010] Preferably, the other end of the connecting line is provided with a terminal block, the connecting line is fixedly connected to the connecting seat through the terminal block, and the electric heater is electrically connected to the connecting line through the terminal block.

[0011] Preferably, a liquid level detection mechanism is arranged on the connecting seat, the liquid level detection mechanism is used for monitoring the liquid level in the heating container, the liquid level detection mechanism comprises a fixed pipe, a liftable floating ball is arranged on the fixed pipe, a baffle is fixedly connected to the fixed pipe and located directly above the floating ball, a proximity switch is arranged on the baffle, and the proximity switch is electrically connected to the water shortage protection device.

[0012] Preferably, a descaling mechanism is arranged on the fixed pipe, the descaling mechanism is used for scraping the outer surface of the fixed pipe, the descaling mechanism comprises a liftable annular seat, three annularly distributed fixed plates are fixedly connected to the annular seat, a movable rod is movably connected to the fixed plate, a first spring is fixedly connected to one end of the movable rod, one end of the first spring is fixedly connected to the fixed plate, and an arc-shaped scraper is fixedly connected to the other end of the movable rod and attached to the outer surface of the fixed pipe.

[0013] Preferably, the fixed pipe is provided with a power mechanism for driving the descaling mechanism to lift, the power mechanism comprises an accumulator, a piston cylinder is fixedly connected below the accumulator, an opening is formed in one end of the fixed pipe extending into the accumulator, a liftable piston is arranged in the piston cylinder, the piston is above the opening, three fixed rods distributed in a ring shape are fixedly connected to the top of the piston, one end of the three fixed rods movably penetrating the piston cylinder is fixedly connected to a ring-shaped seat, an opening is formed in the top of the accumulator, a hose is arranged at the output end of the accumulator, one end of the hose penetrates and is connected to the fixed pipe, and a one-way valve is arranged on the fixed pipe.

[0014] Preferably, the piston cylinder is provided with a reset mechanism for driving the ring-shaped seat to reset, the reset mechanism comprises a second spring, one end of the second spring is fixedly connected in the piston cylinder, the other end of the second spring is fixedly connected to the piston, and the second spring is sleeved on the outer surface of the fixed pipe.

[0015] Preferably, the fixed pipe is provided with a clamping mechanism for fixing the fixed pipe to the connecting seat, the clamping mechanism comprises a fixed seat fixedly connected to the connecting seat, the fixed pipe penetrates the fixed seat, and the fixed seat is provided with three arc-shaped clamping plates distributed in a ring shape in the inside, the three arc-shaped clamping plates are clamped on the outer surface of the fixed pipe.

[0016] Preferably, the fixed seat is provided with an adjusting mechanism for driving the arc-shaped clamping plate to be loose or tight on the fixed pipe, the adjusting mechanism comprises a knob rotatably connected to the fixed seat, a second bevel gear is fixedly connected to the knob, an L-shaped push-pull plate is fixedly connected to the arc-shaped clamping plate, a lead screw is arranged at one end of the L-shaped push-pull plate movably penetrating the fixed seat, the lead screw is screw-connected with the L-shaped push-pull plate, one end of the lead screw is rotatably connected to the fixed seat, the other end of the lead screw is fixedly connected with a first bevel gear, and the first bevel gear is meshingly connected with the second bevel gear.

[0017] The beneficial effects of the present application are as follows: 1. The iron fluorine dragon heater with water shortage protection has the advantages that the electric heater needs to cover the heating part of the heater with the water in the container during use, so that the heater can heat the water in the container, and when the container is short of water, the continuous heating of the heater will cause damage, thereby affecting the service life, the temperature sensor arranged in the electric heater can detect the water temperature in the container, when the water level submerges the temperature sensor during water injection in the container, the temperature sensor can detect the change of temperature, at this time, it indicates that the water in the container has reached the water level that can be heated, so that the electric heater can be started to heat the water in the container, or when the electric heater is short of water, the temperature sensor detects the change of water temperature, so that the water shortage protection device controls the electric heater to stop heating, the water shortage protection of the electric heater is realized, and the service life of the device is improved.

[0018] 2. The iron fluorine dragon heater with water shortage protection has the advantages that the liquid level detection mechanism arranged on the connecting seat can detect the liquid level in the container, when the liquid level does not reach the set liquid level, the device stops heating at this time, thereby protecting the device, when the liquid level rises to the set liquid level, the floating ball rising along the fixed pipe can rise along with the liquid level, when the rising floating ball contacts the proximity switch on the baffle, the device is started to heat, on the contrary, when the liquid level decreases, the floating ball along the fixed pipe decreases, at this time, the proximity switch is closed, so that the device stops heating, the device has better water shortage protection effect, and the stability of water shortage protection is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described below in combination with the drawings.

[0020] Figure 1 is a perspective view of the application; Figure 2 is a connection diagram of the fixed pipe and the floating ball in the application; Figure 3 is a connection diagram of the piston cylinder and the piston in the application; Figure 4 is a connection diagram of the fixed pipe and the arc-shaped scraper in the application; Figure 5 is a connection diagram of the fixed pipe and the fixed seat in the application; Figure 6 is a structure diagram of the heating part in the application; Figure 7 is a sectional view of the application; Figure 6 Figure 8 is a connection diagram of the temperature sensor and the connecting part in the application.

[0021] ​In the diagram: 1. Connecting seat; 2. Electric heater; 21. Connecting part; 22. Heating part; 221. Stainless steel shell; 222. Teflon sleeve; 223. Three-hole magnesium oxide column; 224. Conductive rod; 225. Filler layer; 3. Connecting wire; 4. Water shortage protection device; 5. Temperature sensor; 6. Fixing pipe; 61. Fixing seat; 62. Arc-shaped clamping plate; 621. L-shaped push-pull plate; 622. Lead screw; 623. First helical gear; 63. Knob; 631. Second helical gear; 64. Opening; 7. Float; 8. Ring seat; 81. Fixing plate; 82. Movable rod; 83. First spring; 84. Arc-shaped scraper; 9. Accumulator; 91. Piston cylinder; 92. Piston; 93. Fixing rod; 94. Second spring; 95. Opening; 96. Hose; 10. Baffle. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments. Example

[0023] like Figures 1 to 8 As shown, an embodiment of the present invention provides a Teflon heater with water shortage protection, including a connecting base 1. An electric heater 2 is fixedly connected to the bottom of the connecting base 1. The electric heater 2 consists of a connecting part 21 and a heating part 22. A temperature sensor 5 is provided inside the electric heater 2 at the connection between the connecting part 21 and the heating part 22. A connecting wire 3 is provided on the outer surface of the connecting base 1. A water shortage protection device 4 is provided at the end of the connecting wire 3 away from the connecting base 1. The water shortage protection device 4 is used to protect the electric heater. The water shortage protection device 4 consists of a housing and a circuit board electronic protector. The electric heater 2 and the temperature sensor 5 are both electrically connected to the water shortage protection device 4 through wires. When in operation, this application is mainly applicable to heating water in a fixed-size container. The container is equipped with an inlet pipe and a drain pipe. When in use, the electric heater 2 is inserted into the container by holding the connector 1, and then the connector 1 is fixed to the container with bolts. The connector 1 and the electric heater 2 can be sealed together by a sealing gasket. When the installation of the device is completed, water can be injected into the container through the water inlet pipe at this time, and after the water injection is completed, the water shortage protection device 4 is controlled to operate the electric heater 2, and the heating part 22 on the electric heater 2 can heat the water in the container. Since the electric heater 2 converts electrical energy into heat energy to heat the water in the container, the electric heater 2 itself will generate high temperature when heating. When the liquid level input into the container is not enough to submerge the electric heater 2, the electric heater 2 heating will cause itself to be damaged, or the water in the container needs to be discharged for use after heating. When the water in the container is discharged, the liquid level inside will decrease. At this time, the heating part 22 will continue to heat. The heated heating part 22 cannot timely exchange heat with the water to be heated, which causes the electric heater 2 to be damaged at high temperature, thereby affecting the service life of the device. Therefore, in the present application, the temperature sensor 5 arranged inside the electric heater 2 can detect the water temperature in the container. When the water level submerges the temperature sensor 5 during water injection, the temperature sensor 5 can detect the change of temperature. At this time, it indicates that the water in the container has reached the heatable water level, so that the electric heater 2 can be started to heat the water in the container. Or when the electric heater 2 is short of water, the temperature sensor 5 detects the change of water temperature, so that the water shortage protection device 4 controls the electric heater 2 to stop heating, which can protect the electric heater 2 from water shortage and improve the service life of the device. In summary, in the present application, the electric heater 2 can heat the water in the container, and the temperature sensor 5 arranged inside the electric heater 2 can detect the temperature of the water temperature. When the water temperature changes during water injection, it indicates that the water level has reached the heatable water temperature. At the same time of heating the water in the container, when the temperature detected by the temperature sensor 5 changes suddenly, it indicates that the container is short of water, which causes the electric heater 2 to heat in water shortage. The electric heater 2 can be protected from water shortage, and the service life of the device is improved.

[0024] As shown in Figure 6 , Figure 7 and Figure 8 , the above-mentioned heating part 22 adopts a spiral mechanism. The heating part 22 further includes a stainless steel shell 221, a Teflon sleeve 222, a three-hole type magnesium oxide column 223, three conductive rods 224, and a filler layer 225. The three conductive rods 224 are all connected through the three-hole type magnesium oxide column 223. The Teflon sleeve 222 is sleeved outside the three-hole type magnesium oxide column 223. The stainless steel shell 221 is sleeved outside the Teflon sleeve 222. The filler layer 225 is filled between the Teflon sleeve 222 and the three-hole type magnesium oxide column 223. In work, the water in the container can be heated by the heating part 22, the three conductive rods 224 can be heated, the three-hole magnesium oxide column 223 can limit and fix the three conductive rods 224, the Teflon sleeve 222 can be sleeved outside the three-hole magnesium oxide column 223, the Teflon sleeve 222 and the three-hole magnesium oxide column 223 can be filled and stabilized by the filler layer 225, and the stainless steel shell 221 can be sleeved outside the Teflon sleeve 222 to strengthen the protection and have a heat conduction effect.

[0025] As shown in Figure 1 The connecting part 21 is provided with a sleeve ring fixedly connected. In work, the sleeve ring can limit the connecting part 21, so that the connecting part 21 is connected to the electric heater 2 and has better firmness.

[0026] As shown in Figure 1 The other end of the connecting line 3 is provided with a terminal seat, the connecting line 3 is fixedly connected with the connecting seat 1 through the terminal seat, and the electric heater 2 is electrically connected with the connecting line 3 through the terminal seat. In work, the connecting line 3 can be fixedly connected with the connecting seat 1 through the terminal seat, the terminal seat can protect the connecting line, the electric heater 2 is electrically connected with the connecting seat 1, so that the connecting line 3 is electrically connected with the electric heater 2, and the electric heater 2 is conveniently powered and heated. Embodiment

[0027] In embodiment 1, the connecting seat 1 heats the water in the container through the connected electric heater 2, and the temperature sensor 5 arranged on the electric heater 2 can detect the change of the water temperature in the container, so as to judge whether the water in the container is short of water, avoid the electric heater 2 from heating in the state of short of water, and cause the device to be damaged. When the temperature sensor 5 detects the water shortage in the container, it mainly judges whether the water is short of water by detecting the change of the water temperature. In the water filling process, the initial temperature in the container is consistent with the water temperature, or the temperature difference is small, so that the temperature sensor 5 is insufficient to detect the change of the water temperature. When the water in the container is heated, the heated water needs to be used, and the water level decreases during use, which also causes the water to be short of water, so that the water temperature decreases, and the water temperature detected by the temperature sensor 5 has a small difference, so that it cannot be judged whether the water level in the container reaches the set liquid level that can be heated. Therefore, when the temperature sensor 5 is used alone to detect the temperature to judge whether the water in the container is short of water, it does not have better stability. Therefore, in the embodiment, the liquid level in the container is detected by a mechanical structure, and whether the water in the container is short of water is judged according to the liquid level, so as to provide double protection for the device, increase the protection effect, and improve the service life of the device.

[0028] As shown in Figures 1 to 8As shown, the connecting seat 1 is provided with a liquid level detection mechanism, which is used for monitoring the liquid level in the heating container, and includes a fixed pipe 6, a liftable floating ball 7 arranged on the fixed pipe 6, and a baffle 10 fixedly connected to the fixed pipe 6 and located directly above the floating ball 7. The baffle 10 is provided with a proximity switch, which is electrically connected to the water shortage protection device 4. In operation, the liquid level detection mechanism arranged on the connecting seat 1 can detect the liquid level in the container. When the liquid level does not reach the set level, the device stops running and heating, thereby protecting the device. When the liquid level rises to the set level, the liftable floating ball 7 on the fixed pipe 6 can rise along with the liquid level. When the floating ball 7 reaches the set level, the rising floating ball 7 contacts the proximity switch on the baffle 10, so that the device runs and heats. Conversely, when the liquid level drops, the floating ball 7 along the fixed pipe 6 drops. At this time, the proximity switch is closed, so that the device stops running and heating. The device can have better water shortage protection effect and improve the stability of water shortage protection. When the floating ball 7 approaches the sensing area of the proximity switch, the switch can send an electrical command without contact, thereby controlling the water shortage protection device 4 to run and open. The proximity switch is prior art, so it is not described in detail herein.

[0029] As shown in Figure 3 and Figure 4 The fixed pipe 6 is provided with a descaling mechanism, which is used for scraping the outer surface of the fixed pipe 6. The descaling mechanism includes a liftable annular seat 8, three annularly distributed fixed plates 81 fixedly connected to the annular seat 8, a movable rod 82 movably connected to the fixed plate 81, a first spring 83 fixedly connected to one end of the movable rod 82, one end of the first spring 83 fixedly connected to the fixed plate 81, an arc-shaped scraper 84 fixedly connected to the other end of the movable rod 82, and the arc-shaped scraper 84 abutting against the outer surface of the fixed pipe 6. When working, since the fixed pipe 6 always penetrates into the water in the container, long-term use will cause scale on the outer surface of the fixed pipe 6, which will affect the smoothness of the surface of the fixed pipe 6, so the descaling mechanism needs to be used to descale the outer surface of the fixed pipe 6. When descaling the outer surface of the fixed pipe 6, the annular seat 8 is driven to lift. Since the annular seat 8 is fixedly connected with the fixed plate 81, the movable rod 82 is movably penetrated through the fixed plate 81, one end of the movable rod 82 is fixedly connected with the first spring 83, and the other end of the movable rod 82 is fixedly connected with the arc-shaped scraper 84. The first spring 83 is in a compressed state, the compressed first spring 83 will generate a reaction force, the reaction force will push the arc-shaped scraper 84 fixedly connected with the movable rod 82 to adhere to the fixed pipe 6, so when the annular seat 8 lifts, the annular seat 8 will drive the connected arc-shaped scraper 84 to adhere to the outer surface of the fixed pipe 6 to scrape off. It needs to be explained that the arc-shaped scraper 84 is provided with three arc-shaped scrapers 84, and the three arc-shaped scrapers 84 are staggered with each other, so that the three arc-shaped scrapers 84 can completely scrape off the outer surface of the fixed pipe 6 when lifting, avoiding missing.

[0030] As shown in Figure 2 and Figure 3 , the fixed pipe 6 is provided with a power mechanism, which is used to drive the descaling mechanism to lift. The power mechanism comprises an energy accumulator 9, the lower portion of the energy accumulator 9 is fixedly connected with a piston cylinder 91 through the fixed pipe 6, one end of the fixed pipe 6 extending into the energy accumulator 9 is provided with an opening 64, the inside of the piston cylinder 91 is provided with a liftable piston 92, the piston 92 is located above the opening 64, the top of the piston 92 is fixedly connected with three fixed rods 93 arranged in a ring, one end of the three fixed rods 93 movably penetrating through the piston cylinder 91 is fixedly connected with the annular seat 8, the top of the energy accumulator 9 is provided with an opening 95, the output end of the energy accumulator 9 is provided with a hose 96, one end of the hose 96 is penetrated and connected with the fixed pipe 6, and the fixed pipe 6 is provided with a one-way valve; When working, the power mechanism can provide power for the lifting annular seat 8. The energy accumulator 9 of the power mechanism can store energy. When the container is heated, the internal pressure of the heated container will increase, and the energy accumulator 9 is communicated with the container through the hose 96. At this time, the gas pressure generated in the container is input into the energy accumulator 9 through the opening 95 for storage. When the descaling mechanism needs to be used for cleaning, the valve on the fixed pipe 6 is opened. At this time, the gas pressure stored in the energy accumulator 9 is input into the piston cylinder 91 through the opening 64 of the fixed pipe 6, and the piston 92 is arranged in the piston cylinder 91. When the gas pressure below the piston 92 increases, the piston 92 is pushed to move upward. The annular seat 8 is fixedly connected with the piston 92 through the fixed rod 93, so that when the piston 92 rises, the connected annular seat 8 also rises, thereby the power mechanism provides power for the descaling mechanism.

[0031] As shown in Figure 3As shown, the inside of the piston cylinder 91 is provided with a reset mechanism for driving the annular seat 8 to reset, which comprises a second spring 94, one end of which is fixedly connected to the inside of the piston cylinder 91, and the other end of which is fixedly connected to the piston 92, and the second spring 94 is sleeved on the outer surface of the fixed tube 6; In operation, the reset mechanism can pull the annular seat 8 to reset, and the reset annular seat 8 can prepare for the next scraping, that is, the piston 92 will also compress the second spring 94 connected to the top when it rises, and the second spring 94 itself has elasticity, so that the compressed second spring 94 will reset, and the reset second spring 94 will push the piston 92 to reset, and the piston 92 will pull the connected annular seat 8 to reset, and the reset annular seat 8 will prepare for the next scraping.

[0032] As shown in the drawings, Figure 5 As shown, the fixed tube 6 is provided with a clamping mechanism for fixing the fixed tube 6 on the connecting seat 1, which comprises a fixed seat 61 fixedly connected to the connecting seat 1, and the fixed tube 6 penetrates through the fixed seat 61, and the inside of the fixed seat 61 is provided with three arc-shaped clamping plates 62 arranged in a ring shape, which clamp the outer surface of the fixed tube 6; In operation, the fixed seat 61 can be fixed on the connecting seat 1 by screws, and the fixed tube 6 can penetrate through the fixed seat 61, and the clamping mechanism provided on the fixed seat 61 can clamp and fix the fixed tube 6, and the three arc-shaped clamping plates 62 provided by the clamping mechanism can be clamped on the outer surface of the fixed tube 6, so as to fix the fixed tube 6 on the connecting seat 1.

[0033] As shown in the drawings, Figure 5 As shown, the fixed seat 61 is provided with an adjusting mechanism for driving the arc-shaped clamping plate 62 to loosen or tighten the fixed tube 6, which comprises a knob 63 rotatably connected to the fixed seat 61, a second bevel gear 631 fixedly connected to the knob 63, an L-shaped push-pull plate 621 fixedly connected to the arc-shaped clamping plate 62, a lead screw 622 movably penetrating through one end of the fixed seat 61, the lead screw 622 being threadedly connected with the L-shaped push-pull plate 621, one end of the lead screw 622 being rotatably connected to the fixed seat 61, the other end of the lead screw 622 being fixedly connected with a first bevel gear 623, and the first bevel gear 623 being meshingly connected with the second bevel gear 631; When working, the adjusting mechanism can drive the arc-shaped clamping plates 62 to be loose or tight, that is, by rotating the knob 63, the second bevel gear 631 connected therewith can be rotated on the fixed seat 61, the second bevel gear 631 is in meshing connection with the first bevel gear 623, so that the first bevel gear 623 can be rotated, the first bevel gear 623 can drive the connected lead screw 622 to rotate on the fixed seat 61, since the lead screw 622 is in threaded connection with the L-shaped push-pull plate 621, when the lead screw 622 rotates, the L-shaped push-pull plate 621 can be driven to displace, the displaced L-shaped push-pull plate 621 can drive the connected arc-shaped clamping plates 62 to displace, so that the three arc-shaped clamping plates 62 can clamp and fix the fixed pipe 6 in the middle.

[0034] Working process: When the device is used for heating, the water shortage protection device 4 is arranged to control the operation of the electric heater 2, the heating part 22 on the electric heater 2 can heat the water in the container; since the electric heater 2 converts electric energy into heat energy, the water in the container is heated; 2In the process of heating the water in the container, when the water level input into the container is not enough to submerge the electric heater 2, the heating of the electric heater 2 will cause damage to itself, or the water in the container needs to be discharged for use after heating, when the water in the container is discharged, the liquid level in the container will decrease, at this time the heating part 22 will continue to heat, the heated heating part 22 cannot timely exchange heat with the water to be heated, which will cause the electric heater 2 to be damaged at high temperature, thereby affecting the service life of the device; therefore, in the present application, the temperature sensor 5 arranged in the electric heater 2 can detect the water temperature in the container, when the water level submerges the temperature sensor 5 during water injection into the container, the temperature sensor 5 can detect the change of temperature, at this time it indicates that the water in the container has reached a water level that can be heated, so that the electric heater 2 can be started to heat the water in the container, or when the electric heater 2 is short of water, the temperature sensor 5 detects the change of water temperature, so that the water shortage protection device 4 controls the electric heater 2 to stop heating, which can protect the electric heater 2 from water shortage and improve the service life of the device; At the same time, the liquid level detection mechanism arranged on the connecting seat 1 can detect the liquid level in the container, when the liquid level does not reach the set liquid level, at this time the device stops heating to protect the device, when the liquid level rises to the set liquid level, at this time the rising floating ball 7 on the fixed pipe 6 can rise along with the liquid level to reach the set liquid level, at this time the rising floating ball 7 contacts the proximity switch on the baffle 10, so that the device is operated to heat, on the contrary, when the liquid level decreases, at this time the floating ball 7 descends along with the fixed pipe 6, at this time the proximity switch is closed, so that the device stops heating, which can make the device have better water shortage protection effect and improve the stability of water shortage protection; When the device is cleaned, at this time the electric heater 2 stops heating, the lifting is carried out through the driving annular seat 8, since the annular seat 8 is fixed with the fixed plate 81, the movable rod 82 is movably penetrated in the fixed plate 81, one end of the movable rod 82 is fixed with the first spring 83, the other end of the movable rod 82 is fixed with the arc-shaped scraper 84, wherein the first spring 83 is in the compressed state, the first spring 83 in the compressed state will generate a reaction force, the reaction force will push the arc-shaped scraper 84 fixed with the movable rod 82 to adhere to the fixed pipe 6, so when the annular seat 8 is lifted, the annular seat 8 will drive the connected arc-shaped scraper 84 to adhere to the outer surface of the fixed pipe 6 for scraping, it should be noted that the arc-shaped scraper 84 is provided with three, the three arc-shaped scrapers 84 are staggered with each other, so that the three arc-shaped scrapers 84 can completely scrape the outer surface of the fixed pipe 6 when lifting, avoiding missing; The power mechanism can provide power for the lifting annular seat 8, the accumulator 9 provided in the power mechanism can store energy, wherein when the container is heated, the internal pressure of the heated container will become larger, and the accumulator 9 is communicated with the container through the hose 96, at this time the gas pressure generated in the container is input into the accumulator 9 through the opening 95 for storage, when the descaling mechanism is needed to clean, the valve on the fixed pipe 6 is opened, at this time the gas pressure stored in the accumulator 9 is input into the piston cylinder 91 through the opening hole 64 of the fixed pipe 6, and the piston 92 is arranged in the piston cylinder 91, when the gas pressure below the piston 92 increases, the piston 92 is pushed upward, and the annular seat 8 is fixed on the piston 92 through the fixed rod 93, so that the piston 92 rises and drives the connected annular seat 8 to rise, thereby the power mechanism provides kinetic energy for the descaling mechanism.

[0035] The basic principles, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A Teflon heater with water shortage protection, characterized in that: The device includes a connector, to the bottom of which an electric heater is fixedly connected. The electric heater consists of a connecting part and a heating part. A temperature sensor is installed inside the electric heater at the connection between the connecting part and the heating part. A connecting wire is installed on the outer surface of the connector. A water shortage protection device is installed at the end of the connecting wire away from the connector. The water shortage protection device is used to protect the electric heater. The water shortage protection device consists of a housing and a circuit board electronic protector. The electric heater and the temperature sensor are both electrically connected to the water shortage protection device via wires.

2. A Teflon heater with water shortage protection according to claim 1, characterized in that: The heating section adopts a spiral mechanism and also includes a stainless steel shell, a Teflon sleeve, a three-hole magnesium oxide column, a conductive rod, and a filler layer. There are three conductive rods, all of which are connected through the three-hole magnesium oxide column. The Teflon sleeve is fitted onto the outside of the three-hole magnesium oxide column, and the stainless steel shell is fitted onto the outside of the Teflon sleeve. The filler layer fills the space between the Teflon sleeve and the three-hole magnesium oxide column.

3. A Teflon heater with water shortage protection according to claim 1, characterized in that: A retaining ring is provided on the connecting part for fixed connection.

4. A Teflon heater with water shortage protection according to claim 1, characterized in that: The other end of the connecting line is provided with a terminal block, and the connecting line is fixedly connected to the terminal block through the terminal block. The electric heater is electrically connected to the connecting line through the terminal block.

5. A Teflon heater with water shortage protection according to claim 1, characterized in that: The connecting seat is equipped with a liquid level detection mechanism for monitoring the liquid level inside the heating container. The liquid level detection mechanism includes a fixed tube with a liftable float on it. A baffle is fixedly connected to the fixed tube and is located directly above the float. A proximity switch is installed on the baffle and is electrically connected to a water shortage protection device.

6. A Teflon heater with water shortage protection according to claim 5, characterized in that: The fixed tube is equipped with a descaling mechanism for scraping the outer surface of the fixed tube. The descaling mechanism includes a liftable annular seat, on which three annularly distributed fixed plates are fixedly connected. A movable rod is movably connected to the fixed plate. One end of the movable rod is fixedly connected to a first spring, and one end of the first spring is fixedly connected to the fixed plate. The other end of the movable rod is fixedly connected to an arc-shaped scraper, which is attached to the outer surface of the fixed tube.

7. A Teflon heater with water shortage protection according to claim 5, characterized in that: A power mechanism is installed on the fixed pipe to drive the descaling mechanism to move up and down. The power mechanism includes an accumulator. A piston cylinder is fixedly connected to the bottom of the accumulator through the fixed pipe. An opening is opened at one end of the fixed pipe extending into the accumulator. A liftable piston is installed inside the piston cylinder, and the piston is located above the opening. Three fixed rods arranged in a ring are fixedly connected to the top of the piston. One end of the three fixed rods is movably connected through the piston cylinder and fixed to a ring seat. An opening is opened at the top of the accumulator. A flexible hose is installed at the output end of the accumulator. One end of the flexible hose is connected to the fixed pipe, and a one-way valve is installed on the fixed pipe.

8. A Teflon heater with water shortage protection according to claim 7, characterized in that: The piston cylinder is equipped with a reset mechanism, which is used to drive the annular seat to reset. The reset mechanism includes a second spring, one end of which is fixed inside the piston cylinder, and the other end of which is fixed on the piston. The second spring is also sleeved on the outer surface of the fixed tube.

9. A Teflon heater with water shortage protection according to claim 5, characterized in that: The fixed tube is provided with a clamping mechanism for fixing the fixed tube to the connecting seat. The clamping mechanism includes a fixed seat, which is fixedly connected to the connecting seat. The fixed tube passes through the fixed seat. The fixed seat has three annularly distributed arc-shaped clamping plates inside, which clamp the outer surface of the fixed tube.

10. A Teflon heater with water shortage protection according to claim 9, characterized in that: The fixed base is provided with an adjustment mechanism, which is used to drive the arc-shaped clamping plate to tighten or loosen the fixed tube. The adjustment mechanism includes a knob, which is rotatably connected to the fixed base. A second helical gear is fixedly connected to the knob. An L-shaped push-pull plate is fixedly connected to the arc-shaped clamping plate. A lead screw is provided at one end of the L-shaped push-pull plate that movably passes through the fixed base. The lead screw is threadedly connected to the L-shaped push-pull plate, and one end of the lead screw is rotatably connected to the fixed base. A first helical gear is fixedly connected to the other end of the lead screw, and the first helical gear meshes with the second helical gear.

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