An explosion-proof safety electric heater

Abstract

The utility model belongs to the technical field of electric heaters, and particularly relates to an explosion-proof safety electric heater, comprising: an explosion-proof electric heater body, a feed pipe is fixedly installed on one side of the explosion-proof electric heater body, a sliding plate is plugged and installed on the peripheral side wall of the feed pipe, a filter screen is fixedly installed on the sliding plate and located in the feed pipe, a fixing plate is fixedly installed on the peripheral side wall of the feed pipe and located on one side of the sliding plate, two limit columns 1 are fixedly installed on one side of the sliding plate, the two limit columns 1 both extend into the fixing plate, and the limit columns 1 are plugged and matched with the fixing plate; a fixing component, the fixing component is located on the fixing plate, and is used to fix the positions of the two limit columns 1; the overall device in the utility model is convenient for transporting the explosion-proof electric heater body and saves labor when in use, and can prevent impurities in petroleum from entering the explosion-proof electric heater body to cause device blockage, and is convenient for cleaning impurities on the filter screen.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric heaters, and in particular relates to an explosion-proof safety electric heater. Background Art

[0002] The explosion-proof safety electric heater focuses on safety in design, using high-explosion-proof materials and technologies to ensure safe operation in flammable and explosive environments such as petroleum.

[0003] For example, the Chinese patent with publication number CN220582749U discloses an electric heater for flammable liquids, which relates to the field of electric heaters and includes a heating casing, an electric heating control box is provided at the bottom of the heating casing, and a casing is provided at the top of the heating casing. Under the operation of the electric heating control box, the utility model heats the air in the heating chamber in the heating casing by the electric heating pipe, and at the same time, under the operation of the air pump, the air in the heating chamber inside the heating casing is driven to circulate along the heating channel to maintain the temperature of the air inside the heating casing, and because the oil pipeline divides the heating chamber into a spiral heat conduction channel, the time of the hot air in the heating chamber can be extended, and the heating effect can be improved, thereby achieving the effect of uniformly heating the oil pipeline and making the oil transportation inside the oil pipeline smoother.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when used, such as: when the above device heats oil, impurities in the oil may cause the heater to be blocked, and impurities may cause uneven heat distribution inside the electric heater, making the temperature of some parts too high, thereby increasing the risk of thermal runaway and fire or explosion. At the same time, the above device needs to be lifted by multiple people during transportation, which wastes labor, and manual lifting may cause the device to be damaged by impact. In view of this, we propose an explosion-proof and safe electric heater. Utility Model Content

[0006] The purpose of the utility model is to provide an explosion-proof safety electric heater to solve the problems raised in the above background technology.

[0007] In view of this, the utility model provides an explosion-proof safety electric heater, comprising:

[0008] An explosion-proof electric heater body, a feed pipe is fixedly installed on one side of the explosion-proof electric heater body, a sliding plate is plugged and installed on the peripheral side wall of the feed pipe, a filter screen is fixedly installed on the sliding plate and located in the feed pipe, a fixed plate is fixedly installed on the peripheral side wall of the feed pipe and located on one side of the sliding plate, two limit columns 1 are fixedly installed on one side of the sliding plate, the two limit columns 1 both extend into the fixed plate, and the limit columns 1 are plugged and matched with the fixed plate;

[0009] A fixing assembly, which is located on the fixing plate and is used to fix the positions of the two limit posts;

[0010] A base, wherein the base is fixedly mounted on the bottom of the explosion-proof electric heater body, and a power cavity is provided in the base, and two sliding rods are slidably installed in the power cavity, and a rotating column 1 is rotatably installed at both ends of the sliding rods, and the lower end of the rotating column 1 extends to the outside and is provided with a rotating groove, and a roller is rotatably installed at the bottom of the rotating groove, and a rotating column 2 is rotatably installed in the rotating groove, and one end of the rotating column 2 is rotatably connected to the power cavity;

[0011] A driving assembly is located in the power cavity and is used to drive the two sliding rods to slide.

[0012] In the present technical scheme, when it is necessary to transport the explosion-proof electric heater body, the two sliding rods can be driven to slide and move away from each other through the provided driving assembly, and the two sliding rods respectively drive the four rotating column 1s to rotate downward, and the rotating column 1 drives the corresponding rotating column 2 and the corresponding rollers to rotate downward, and when the four rollers are in contact with the ground, personnel can push the explosion-proof electric heater body, which is convenient for transportation and saves labor. When the explosion-proof electric heater body is moved to a suitable position, the provided driving assembly can be driven to slide and move toward each other, and the two sliding rods respectively drive the four rotating column 1s to rotate upward, and the rotating column 1 drives the corresponding rotating column 2 and the corresponding rollers to rotate upward, and finally the four rollers are retracted, and the bottom of the base will contact the ground at this time, making the explosion-proof electric heater body more stable during operation;

[0013] When the oil needs to be heated, the oil passes through the feed pipe and then enters the explosion-proof electric heater body through the filter screen, and the impurities on the oil will stay on the filter screen. After the oil is heated in the explosion-proof electric heater body, it is discharged to the outside through the discharge pipe, which can prevent the impurities in the oil from entering the explosion-proof electric heater body and causing the device to be blocked;

[0014] When it is necessary to deal with the impurities on the filter screen, the sliding plate can be taken out of the feed pipe through the set driving component, and then the impurities on the filter screen are cleaned. When the cleaning is completed, the personnel inserts the sliding plate into the feed pipe, and then the two limit columns are inserted into the fixed plate. The positions of the two limit columns can be fixed through the set driving component. Finally, the position of the sliding plate is fixed, thereby achieving the purpose of cleaning the impurities on the filter screen.

[0015] In the above technical solution, further, the fixing assembly includes:

[0016] A limit groove, wherein the limit groove is provided in the fixed plate, and two limit columns 2 are slidably installed in the limit groove, and the ends of the two limit columns 2 that are away from each other extend into the two limit columns 1 respectively, and the limit columns 2 are plugged into and matched with the limit columns 1, and a tension spring 1 fixed to the inner wall of the limit groove is fixedly installed on the limit column 2, and a driving block is slidably installed in the limit groove and between the two limit columns 2, and the two sides of the driving block are respectively in contact with the two limit columns 2, and the upper end of the driving block passes through the limit groove, extends to the outside and is fixedly installed with a handle, and the bottom of the handle is fixedly installed with a plurality of tension springs 2 fixed to the top of the fixed plate.

[0017] In the technical solution, when it is necessary to deal with impurities on the filter screen, the handle is pulled upward, and at the same time, the plurality of tension springs 2 are pulled and stretched, and the handle drives the driving block to slide upward. When the driving block no longer squeezes the two limit posts 2, under the action of the tension of the two tension springs 1, the two tension springs 1 respectively pull the two limit posts 2 to slide in the direction of the driving block, and then one end of the limit post 2 is separated from the corresponding limit post 1. At this time, the sliding plate can be taken out of the feed pipe, and then the impurities on the filter screen are cleaned. When the cleaning is completed, the personnel inserts the sliding plate into the feed pipe. The two limit columns 1 are inserted into the feed pipe, and then the two limit columns 1 are inserted into the fixed plate. At this time, the handle is released, and under the tension of the tension spring 2, the tension spring 2 pulls the handle to slide downward, and the handle drives the driving block to slide downward. The inclined surface at the bottom of the driving block will squeeze the two limit columns 2 to slide away from the driving block. At the same time, the two tension springs 1 are pulled and stretched, and finally one end of the two limit columns 2 will respectively enter the two limit columns 1, so that the positions of the two limit columns 1 can be fixed. Finally, the position of the sliding plate is fixed, thereby achieving the effect of cleaning impurities on the filter screen.

[0018] In the above technical solution, further, the driving component includes:

[0019] A motor is fixedly installed in the power cavity and located on one side of one of the sliding rods. A threaded rod is fixedly installed on the output shaft of the motor. One end of the threaded rod passes through two sliding rods. The threaded rod is provided with threads with opposite rotation directions at both ends, and the threaded rod is threadedly connected to the sliding rod.

[0020] When the four rollers are in contact with the ground, personnel can push the explosion-proof electric heater body, which is convenient for transportation and saves labor. When the explosion-proof electric heater body is moved to a suitable position, the motor is started, the motor is powered on and drives the threaded rod to rotate in the opposite direction. Under the action of the thread, the threaded rod drives the two sliding rods to slide and move away from each other, and the two sliding rods respectively drive the four rotating column 1 to rotate upward, and the rotating column 1 drives the corresponding rotating column 2 and the corresponding roller to rotate upward, finally achieving the effect of retracting the four rollers. At this time, the bottom of the base will contact the ground, making the explosion-proof electric heater body more stable during operation.

[0021] In the above technical solution, further, a sealing rubber pad is fixedly installed on the sliding plate and located inside the feed pipe.

[0022] In the technical solution, the sealing rubber pad is provided to ensure that the oil will not leak after the sliding plate is inserted into the feed pipe.

[0023] In the above technical solution, further, the threaded rod is rotationally connected to the power chamber, and the rotating column 1 is rotationally connected to the power chamber.

[0024] In this technical solution, it is ensured that the threaded rod can rotate in the power cavity, and it is ensured that the rotating column 1 can rotate in the power cavity.

[0025] In the above technical solution, further, a discharge pipe is fixedly installed on the other side of the explosion-proof electric heater body.

[0026] In this technical solution, it is ensured that the oil after heating is completed can be discharged from the explosion-proof electric heater body through the discharge pipe.

[0027] The beneficial effects of the utility model are:

[0028] 1. When the explosion-proof safety electric heater needs to be transported, the two sliding rods can be driven to slide and move away from each other through the set driving assembly, and the two sliding rods respectively drive the four rotating columns 1 to rotate downward, and the rotating column 1 drives the corresponding rotating column 2 and the corresponding roller to rotate downward. When the four rollers are in contact with the ground, personnel can push the explosion-proof electric heater body, which facilitates transportation and saves labor.

[0029] 2. When the explosion-proof safety electric heater needs to heat the oil, the oil passes through the feed pipe and then enters the explosion-proof electric heater body through the filter screen, and the impurities on the oil will remain on the filter screen. After the oil is heated in the explosion-proof electric heater body, it is discharged to the outside through the discharge pipe, which can prevent the impurities in the oil from entering the explosion-proof electric heater body and causing blockage of the device. The absence of impurities in the device can increase the explosion-proof performance of the overall device.

[0030] 3. When it is necessary to deal with impurities on the filter screen, the explosion-proof safety electric heater can take the sliding plate out of the feed pipe through the set driving component, and then clean the impurities on the filter screen. When the cleaning is completed, the personnel inserts the sliding plate into the feed pipe, and then the two limit columns are inserted into the fixed plate. The position of the two limit columns can be fixed by the set driving component, and finally the position of the sliding plate is fixed, thereby achieving the effect of cleaning the impurities on the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0032] Figure 2 It is a schematic diagram of the partial explosion structure of the utility model;

[0033] Figure 3 It is a schematic diagram of the cross-sectional structure of the fixing plate of the utility model;

[0034] Figure 4 It is a schematic diagram of the threaded rod area structure of the utility model;

[0035] Figure 5 It is a schematic diagram of the cross-sectional structure of the base of the utility model.

[0036] The symbols in the figure are:

[0037] 1. Explosion-proof electric heater body; 2. Feed pipe; 3. Sliding plate; 4. Filter; 5. Limiting column 1; 6. Fixed plate; 7. Discharging pipe; 8. Base; 9. Power chamber; 10. Sliding rod; 11. Rotating column 1; 12. Rotating groove; 13. Rotating column 2; 14. Roller; 15. Limiting groove; 16. Limiting column 2; 17. Tension spring 1; 18. Handle; 19. Tension spring 2; 20. Drive block; 21. Threaded rod; 22. Motor. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0039] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0041] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0042] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0043] Embodiment 1:

[0044] See also Figure 1 - Figure 5 As shown, this embodiment provides an explosion-proof safety electric heater, comprising:

[0045] An explosion-proof electric heater body 1, a feed pipe 2 is fixedly installed on one side of the explosion-proof electric heater body 1, a sliding plate 3 is plugged and installed on the peripheral side wall of the feed pipe 2, a filter screen 4 is fixedly installed on the sliding plate 3 and located in the feed pipe 2, a fixed plate 6 is fixedly installed on the peripheral side wall of the feed pipe 2 and located on one side of the sliding plate 3, two limit columns 5 are fixedly installed on one side of the sliding plate 3, the two limit columns 5 both extend into the fixed plate 6, and the limit columns 5 are plugged and matched with the fixed plate 6;

[0046] A fixing assembly, which is located on the fixing plate 6 and is used to fix the positions of the two limiting columns 5;

[0047] Base 8, base 8 is fixedly installed at the bottom of explosion-proof electric heater body 1, and a power cavity 9 is opened in base 8, two sliding rods 10 are slidably installed in the power cavity 9, both ends of the sliding rods 10 are rotatably installed with rotating columns 11, the lower end of rotating column 11 extends to the outside and is provided with a rotating groove 12, a roller 14 is rotatably installed at the bottom of the rotating groove 12, and a rotating column 2 13 is rotatably installed in the rotating groove 12, and one end of the rotating column 2 13 is rotatably connected to the power cavity 9;

[0048] The driving assembly is located in the power cavity 9 and is used to drive the two sliding rods 10 to slide.

[0049] Among them, when the explosion-proof electric heater body 1 needs to be transported, the two sliding rods 10 can be driven to slide and move away from each other through the provided driving assembly, and the two sliding rods 10 respectively drive the four rotating columns 11 to rotate downward, and the rotating column 11 drives the corresponding rotating column 2 13 and the corresponding roller 14 to rotate downward, and when the four rollers 14 are in contact with the ground, personnel can push the explosion-proof electric heater body 1, which is convenient for transportation and saves labor. When the explosion-proof electric heater body 1 is moved to a suitable position, the provided driving assembly can be driven to slide and move closer to each other, and the two sliding rods 10 respectively drive the four rotating columns 11 to rotate upward, and the rotating column 11 drives the corresponding rotating column 2 13 and the corresponding roller 14 to rotate upward, and finally achieves the effect of retracting the four rollers 14, and at this time the bottom of the base 8 will contact the ground, making the explosion-proof electric heater body 1 more stable during operation;

[0050] When the oil needs to be heated, the oil passes through the feed pipe 2 and then enters the explosion-proof electric heater body 1 after being filtered by the filter screen 4, and the impurities on the oil will stay on the filter screen 4. After the oil is heated in the explosion-proof electric heater body 1, it is discharged to the outside through the discharge pipe 7, which can prevent the impurities in the oil from entering the explosion-proof electric heater body 1 and causing the device to be blocked;

[0051] When it is necessary to deal with the impurities on the filter screen 4, the sliding plate 3 can be taken out of the feed pipe 2 through the set driving component, and then the impurities on the filter screen 4 are cleaned. When the cleaning is completed, the personnel inserts the sliding plate 3 into the feed pipe 2, and then the two limit columns 5 are inserted into the fixed plate 6. The positions of the two limit columns 5 can be fixed through the set driving component. Finally, the position of the sliding plate 3 is fixed, thereby achieving the effect of cleaning the impurities on the filter screen 4.

[0052] In this embodiment, the fixing component includes:

[0053] A limiting groove 15, the limiting groove 15 is provided in the fixed plate 6, and two limiting columns 16 are slidably installed in the limiting groove 15, and the ends of the two limiting columns 16 that are away from each other extend into the two limiting columns 15 respectively, and the limiting columns 16 and the limiting columns 15 are plugged and matched, and a tension spring 17 fixed to the inner wall of the limiting groove 15 is fixedly installed on the limiting column 16, and a driving block 20 is slidably installed in the limiting groove 15 and between the two limiting columns 16, and the two sides of the driving block 20 are respectively in contact with the two limiting columns 16, and the upper end of the driving block 20 passes through the limiting groove 15 and extends to the outside and is fixedly installed with a handle 18, and the bottom of the handle 18 is fixedly installed with a plurality of tension springs 19 fixed to the top of the fixed plate 6;

[0054] When it is necessary to process the impurities on the filter screen 4, the handle 18 is pulled upward, and at the same time, the plurality of tension springs 19 are pulled and stretched, and the handle 18 drives the driving block 20 to slide upward. When the driving block 20 no longer squeezes the two limit posts 16, under the action of the tension of the two tension springs 17, the two tension springs 17 respectively pull the two limit posts 16 to slide in the direction of the driving block 20, and then one end of the limit post 16 is separated from the corresponding limit post 1 5. At this time, the sliding plate 3 can be taken out of the feed pipe 2, and then the impurities on the filter screen 4 are cleaned. When the cleaning is completed, the personnel inserts the sliding plate 3 into the feed pipe. 2, and then the two limit columns 15 are inserted into the fixed plate 6. At this time, the handle 18 is released. Under the action of the tension of the tension springs 19, the tension springs 19 pull the handle 18 to slide downward, and the handle 18 drives the driving block 20 to slide downward. The inclined surface at the bottom of the driving block 20 squeezes the two limit columns 16 to slide away from the driving block 20. At the same time, the two tension springs 17 are pulled and extended. Finally, one end of the two limit columns 16 will enter the two limit columns 15 respectively, so that the positions of the two limit columns 5 can be fixed. Finally, the position of the sliding plate 3 is fixed, and the impurities on the filter screen 4 are cleaned.

[0055] In this embodiment, the driving component includes:

[0056] The motor 22 is fixedly installed in the power cavity 9 and is located on one side of one of the sliding rods 10. The output shaft of the motor 22 is fixedly installed with a threaded rod 21. One end of the threaded rod 21 passes through the two sliding rods 10. The threaded rod 21 is provided with threads with opposite rotation directions at both ends, and the threaded rod 21 is threadedly connected with the sliding rod 10;

[0057] When the explosion-proof electric heater body 1 needs to be transported, the motor 22 is first started. The motor 22 is powered on and drives the threaded rod 21 to rotate forward. Under the action of the thread, the threaded rod 21 drives the two sliding rods 10 to slide and move away from each other. The two sliding rods 10 respectively drive the four rotating columns 11 to rotate downward. The rotating column 11 drives the corresponding rotating column 2 13 and the corresponding roller 14 to rotate downward. When the four rollers 14 are in contact with the ground, personnel can push the explosion-proof electric heater body 1, which is convenient for transportation and saves labor. When the explosion-proof electric heater body 1 is moved to a suitable position, the motor 22 is started, the motor 22 is powered on and drives the threaded rod 21 to rotate in the opposite direction. Under the action of the thread, the threaded rod 21 drives the two sliding rods 10 to slide and approach each other, and the two sliding rods 10 respectively drive the four rotating columns 11 to rotate upward, and the rotating column 11 drives the corresponding rotating column 2 13 and the corresponding roller 14 to rotate upward, and finally the four rollers 14 are retracted. At this time, the bottom of the base 8 will contact the ground, making the explosion-proof electric heater body 1 more stable during operation.

[0058] Embodiment 2:

[0059] This embodiment provides an explosion-proof safety electric heater, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0060] In this embodiment, a sealing rubber pad is fixedly installed on the sliding plate 3 and located inside the feed pipe 2 .

[0061] The sealing rubber pad can ensure that the oil will not leak after the sliding plate 3 is inserted into the feed pipe 2.

[0062] Embodiment 3:

[0063] This embodiment provides an explosion-proof safety electric heater, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0064] In this embodiment, the threaded rod 21 is rotatably connected to the power chamber 9 , and the rotating column 11 is rotatably connected to the power chamber 9 .

[0065] Among them, it is ensured that the threaded rod 21 can rotate in the power chamber 9, and it is ensured that the rotating column 11 can rotate in the power chamber 9.

[0066] Embodiment 4:

[0067] This embodiment provides an explosion-proof safety electric heater, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0068] In this embodiment, a discharge pipe 7 is fixedly installed on the other side of the explosion-proof electric heater body 1 .

[0069] It is ensured that the oil after heating is completed can be discharged from the explosion-proof electric heater body 1 through the discharge pipe 7 .

[0070] Working principle: When the explosion-proof electric heater body 1 needs to be transported, the motor 22 is first started. The motor 22 is powered on and drives the threaded rod 21 to rotate forward. Under the action of the thread, the threaded rod 21 drives the two sliding rods 10 to slide and move away from each other. The two sliding rods 10 respectively drive the four rotating columns 11 to rotate downward. The rotating column 11 drives the corresponding rotating column 2 13 and the corresponding roller 14 to rotate downward. When the four rollers 14 are in contact with the ground, personnel can push the explosion-proof electric heater body 1, which is convenient for transportation and saves labor. When the explosion-proof electric heater body 1 is displaced to a suitable position, the motor 22 is started, the motor 22 is powered on and drives the threaded rod 21 to rotate in the opposite direction. Under the action of the thread, the threaded rod 21 drives the two sliding rods 10 to slide and approach each other, and the two sliding rods 10 respectively drive the four rotating columns 11 to rotate upward, and the rotating column 11 drives the corresponding rotating column 2 13 and the corresponding roller 14 to rotate upward, and finally achieves the effect of retracting the four rollers 14. At this time, the bottom of the base 8 will contact the ground, making the explosion-proof electric heater body 1 more stable when working;

[0071] When the oil needs to be heated, the oil passes through the feed pipe 2 and then enters the explosion-proof electric heater body 1 after being filtered by the filter screen 4, and the impurities on the oil will stay on the filter screen 4. After the oil is heated in the explosion-proof electric heater body 1, it is discharged to the outside through the discharge pipe 7, which can prevent the impurities in the oil from entering the explosion-proof electric heater body 1 and causing the device to be blocked;

[0072] When it is necessary to process the impurities on the filter screen 4, the handle 18 is pulled upward, and at the same time, the plurality of tension springs 19 are pulled and stretched, and the handle 18 drives the driving block 20 to slide upward. When the driving block 20 no longer squeezes the two limit posts 16, under the action of the tension of the two tension springs 17, the two tension springs 17 respectively pull the two limit posts 16 to slide in the direction of the driving block 20, and then one end of the limit post 16 is separated from the corresponding limit post 1 5. At this time, the sliding plate 3 can be taken out of the feed pipe 2, and then the impurities on the filter screen 4 are cleaned. When the cleaning is completed, the personnel inserts the sliding plate 3 into the feed pipe 2. Then, the two limit columns 15 are inserted into the fixed plate 6, and the handle 18 is released at this time. Under the action of the tension of the tension springs 19, the tension springs 19 pull the handle 18 to slide downward, and the handle 18 drives the driving block 20 to slide downward. The inclined surface at the bottom of the driving block 20 will squeeze the two limit columns 16 to slide away from the driving block 20. At the same time, the two tension springs 17 are pulled and extended. Finally, one end of the two limit columns 16 will enter the two limit columns 5 respectively, so that the positions of the two limit columns 5 can be fixed. Finally, the position of the sliding plate 3 is fixed, thereby achieving the effect of cleaning impurities on the filter screen 4.

[0073] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An explosion-proof safety electric heater, characterized in that: include: An explosion-proof electric heater body (1), a feed pipe (2) is fixedly installed on one side of the explosion-proof electric heater body (1), a sliding plate (3) is plugged and installed on the peripheral side wall of the feed pipe (2), a filter screen (4) is fixedly installed on the sliding plate (3) and located inside the feed pipe (2), a fixed plate (6) is fixedly installed on the peripheral side wall of the feed pipe (2) and located on one side of the sliding plate (3), two limit columns (5) are fixedly installed on one side of the sliding plate (3), the two limit columns (5) both extend into the fixed plate (6), and the limit columns (5) are plugged and matched with the fixed plate (6); A fixing assembly, the fixing assembly being located on the fixing plate (6) and being used to fix the positions of the two limiting columns (5); A base (8), wherein the base (8) is fixedly mounted on the bottom of the explosion-proof electric heater body (1), and a power chamber (9) is provided in the base (8), and two sliding rods (10) are slidably mounted in the power chamber (9), and a rotating column (11) is rotatably mounted at both ends of the sliding rod (10), and the lower end of the rotating column (11) extends to the outside and is provided with a rotating groove (12), and a roller (14) is rotatably mounted at the bottom of the rotating groove (12), and a rotating column (13) is rotatably mounted in the rotating groove (12), and one end of the rotating column (13) is rotatably connected to the power chamber (9); A driving assembly is located in the power chamber (9) and is used to drive the two sliding rods (10) to slide.

2. An explosion-proof safety electric heater according to claim 1, characterized in that: The fixing assembly comprises: A limit groove (15), wherein the limit groove (15) is provided in the fixed plate (6), and two limit columns (16) are slidably installed in the limit groove (15), and the ends of the two limit columns (16) that are away from each other respectively extend into the two limit columns (5), and the limit columns (16) are plugged and matched with the limit columns (5), and a tension spring (17) fixed to the inner wall of the limit groove (15) is fixedly installed on the limit column (16), and a driving block (20) is slidably installed in the limit groove (15) and between the two limit columns (16), and the two sides of the driving block (20) are respectively in contact with the two limit columns (16), and the upper end of the driving block (20) passes through the limit groove (15) and extends to the outside and is fixedly installed with a handle (18), and the bottom of the handle (18) is fixedly installed with a plurality of tension springs (19) fixed to the top of the fixed plate (6).

3. An explosion-proof safety electric heater according to claim 2, characterized in that: The drive assembly comprises: A motor (22) is fixedly mounted in the power chamber (9) and located on one side of one of the sliding rods (10); a threaded rod (21) is fixedly mounted on the output shaft of the motor (22); one end of the threaded rod (21) passes through the two sliding rods (10); the threaded rod (21) is provided with threads with opposite rotation directions at both ends, and the threaded rod (21) is threadedly connected to the sliding rod (10).

4. The explosion-proof safety electric heater according to claim 1, characterized in that: A sealing rubber pad is fixedly installed on the sliding plate (3) and located inside the feed pipe (2).

5. The explosion-proof safety electric heater according to claim 3, characterized in that: The threaded rod (21) is rotatably connected to the power chamber (9), and the rotating column (11) is rotatably connected to the power chamber (9).

6. The explosion-proof safety electric heater according to claim 1, characterized in that: A discharge pipe (7) is fixedly mounted on the other side of the explosion-proof electric heater body (1).

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