Self-cleaning stirring device

Abstract

The utility model discloses a self-cleaning stirring device which comprises a base, supporting legs are fixedly connected to the four corners of the bottom of the base, two clamping sleeves with openings in the tops are fixedly embedded in the top of the base, coal sample bottles are movably clamped in the clamping sleeves, and a shield with an opening in the bottom is movably contacted with the top of the base in a sealed mode. The two coal sample bottles are located in the shield, outer edges are integrally arranged at the tops of the two sides of the shield, and multi-stage electric telescopic rods are fixedly mounted on the two sides of the top of the base. According to the utility model, a series of structures are arranged, so that the two coal sample bottles can be conveniently and stably sealed and prevented from splashing before stirring, and the two coal sample bottles are safely enclosed and protected on the outer side, so that the safety and stability of the operation of the coal sample bottles are improved, and the inner parts of the two coal sample bottles can be conveniently and synchronously and automatically stirred and uniformly mixed; and the stirring rod piece can be automatically and quickly washed and cleaned after use, and the working efficiency and the cleaning effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring equipment, in particular to a self-cleaning stirring device. Background Art

[0002] The coal quality inspection specialty of thermal power plants is responsible for coal quality inspection (collection and preparation), which includes sampling, sample preparation, and testing. In the quality inspection and testing work, the coal quality test is a full-moisture coal sample, which requires a 2L sample bottle and a 240ml sample bottle for general coal sample. The coal sample needs to be mixed before testing. Currently, it is manually stirred (mixed). The laboratory technician stirs it with a spoon before the test, which requires 1 minute, or a stirring rod can be inserted into the stirring device inside the coal sample bottle for stirring.

[0003] The existing sample bottle stirring device has the following problems: 1. When the coal sample is inserted into the sample bottle for stirring, it is easy to splash out and be lost, and two sample bottles cannot be operated at the same time, and the stability of use is not ideal; 2. The stirring rod cannot be automatically and quickly cleaned after use, and the coal sample remaining outside the stirring rod may affect the quality of the next sample; In view of this, a self-cleaning stirring device is proposed to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a self-cleaning stirring device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-cleaning stirring device, comprising a base, wherein the four corners of the bottom of the base are fixedly connected with supporting legs, the top of the base is embedded and fixed with two ferrules with openings at the top, a coal sample bottle is movably mounted in the ferrules, the top of the base is sealed and movably contacted with a shield with an opening at the bottom, the two coal sample bottles are both located in the shield, the tops of both sides of the shield are integrally provided with outer edges, multi-stage electric telescopic rods are fixedly installed on both sides of the top of the base, the extended ends of the multi-stage electric telescopic rods are fixedly connected with the bottoms of the corresponding outer edges, the shield is driven to move up and down to be opened or closed by the multi-stage electric telescopic rods, and the shield is used to perform safety shielding protection on the outside;

[0006] The shield is provided with a sealing plate in sealing contact with the tops of the two coal sample bottles, and both sides of the top of the sealing plate are fixedly connected with elastic vertical guide support components that are slidably connected and interlaced with the inner wall of the top of the shield. The elastic vertical guide support components are used to drive the sealing plate to press and seal the tops of the two coal sample bottles when the shield moves down and closes;

[0007] A double-position telescopic synchronous stirring assembly is rotatably installed between the top inner wall of the shield and the sealing plate, the bottom of the double-position telescopic synchronous stirring assembly extends into the two coal sample bottles, and a driving motor whose output shaft is fixedly installed on the top of the shield is fixedly connected to the double-position telescopic synchronous stirring assembly. The double-position telescopic synchronous stirring assembly is used to evenly mix the samples in the two coal sample bottles synchronously when the driving motor is started;

[0008] A water tank is fixedly installed on the top of the protective cover, and a stirring rod cleaning assembly located between the two coal sample bottles is fixedly installed on the bottom of the water tank. The sealing plate is fixedly sleeved on the stirring rod cleaning assembly. The stirring rod cleaning assembly is used to clean the double-position telescopic synchronous stirring assembly after the coal sample bottle is taken away after use.

[0009] Preferably, the elastic vertical guide support assembly includes an L-shaped guide rod fixedly connected to the top of the sealing plate, the protective cover is slidably sleeved on the two L-shaped guide rods, and two compression springs in a compressed state are fixedly connected between the top of the sealing plate and the top inner wall of the protective cover, and the compression springs are movably sleeved on the corresponding L-shaped guide rods.

[0010] Preferably, the double-position telescopic synchronous stirring assembly includes two rotating shafts rotatably mounted on the inner wall of the top of the protective cover, the sliding sleeve on the rotating shaft is provided with a vertical guide sleeve, the sealing plate rotating sleeve is provided on the two vertical guide sleeves, the bottom end of the rotating shaft extends into the corresponding coal sample bottle, a plurality of stirring rods are fixedly connected to the outside of the rotating shaft, the fixed sleeve on the rotating shaft is provided with a synchronous wheel located above the sealing plate, the two synchronous wheels are transmission-connected with the same synchronous belt, and the top end of the rotating shaft on the left is fixedly connected to the bottom end of the output shaft of the driving motor.

[0011] Preferably, the stirring rod cleaning assembly includes a water pump fixedly installed at the bottom of the water tank, the water inlet of the water pump extends into the water tank, the water outlet of the water pump is connected and fixed with an inner tube, the bottom end of the inner tube extends into the protective cover, the sealing sliding sleeve on the inner tube is provided with an outer tube with a sealing structure at the bottom end, the sealing plate fixed sleeve is arranged on the outer tube, and multiple water spray heads are connected and fixed on both sides of the outer tube, the multiple water spray heads are all located between the two coal sample bottles and cooperate with the multiple stirring rods, and the inner tube is located on the inner side of the synchronous belt and does not contact with the inner side of it.

[0012] Preferably, a plurality of drainage holes are provided on the top of the base and the bottom of the sleeve, and a water receiving box matching with the plurality of drainage holes is provided below the base.

[0013] Preferably, a rectangular sealing ring is bonded and fixed to the bottom of the shield, and the bottom of the rectangular sealing ring is in active contact with the top of the base.

[0014] Preferably, a sealing gasket is bonded and fixed to the bottom of the sealing plate, and the bottom of the sealing gasket is in active contact with the tops of the two coal sample bottles.

[0015] Preferably, a synchronous control switch is fixedly connected to the rear side of the multi-stage electric telescopic rod located on the left side, and the synchronous control switch is electrically connected to the two multi-stage electric telescopic rods.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. This self-cleaning stirring device can drive the shield to move up and down to unseal and surround the shield through the cooperation of the multi-stage electric telescopic rod, the ferrule, the shield, the sealing plate and the elastic vertical guide support assembly. It can automatically elastically tighten and seal the two coal sample bottles when the shield moves down, so as to achieve the effect of automatically sealing the two coal sample bottles stably and splash-proofing before stirring. Combined with the method of safely enclosing and protecting the two coal sample bottles on the outside, the safety and stability of the operation of the coal sample bottles are improved;

[0018] 2. This self-cleaning stirring device can automatically and synchronously stir and mix the inside of two coal sample bottles through the cooperation of the double-position telescopic synchronous stirring assembly and the driving motor, thereby improving work efficiency;

[0019] 3. This self-cleaning stirring device, through the cooperation of the double-position telescopic synchronous stirring assembly, the driving motor, the stirring rod cleaning assembly and the water tank, can automatically and quickly rinse and clean the stirring rod after use, avoiding the residual coal sample on the outside of the stirring rod affecting the quality of the next sample, thereby improving the use effect.

[0020] The utility model is provided with a series of structures, which facilitates to automatically and stably seal the two coal sample bottles to prevent splashing before stirring, and to provide safe enclosure protection for the two coal sample bottles on the outside, thereby improving the safety and stability of the operation of the coal sample bottles, facilitating the synchronous and automatic stirring and mixing operations of the two coal sample bottles, and facilitating the automatic and rapid flushing and cleaning of the stirring rod after use, thereby improving work efficiency and cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a self-cleaning stirring device proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the front and cross-sectional structure of a self-cleaning stirring device proposed by the utility model;

[0023] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0024] In the figure: 100, coal sample bottle; 1, base; 2, protective cover; 3, multi-stage electric telescopic rod; 4, sealing plate; 5, ferrule; 6, drainage hole; 7, L-shaped guide rod; 8, compression spring; 9, rotating shaft; 10, stirring rod; 11, vertical guide sleeve; 12, synchronous wheel; 13, synchronous belt; 14, driving motor; 15, water tank; 16, water pump; 17, inner tube; 18, outer tube; 19, sprinkler head; 20, sealing gasket. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figures 1 to 3 As shown, a self-cleaning stirring device proposed in this embodiment includes a base 1, and the four corners of the bottom of the base 1 are fixedly connected with supporting legs. The top of the base 1 is embedded and fixed with two ferrules 5 with an opening at the top, and a coal sample bottle 100 is movably mounted in the ferrule 5. The top of the base 1 is sealed and movably contacted with a protective cover 2 with an opening at the bottom, wherein a rectangular sealing ring is bonded and fixed to the bottom of the protective cover 2, and the bottom of the rectangular sealing ring is movably contacted with the top of the base 1, which plays a role of active sealing between the bottom of the protective cover 2 and the top of the base 1, and the two coal sample bottles 100 are located at the protective cover 2. Inside, both sides of the top of the protective cover 2 are integrally provided with outer edges, and both sides of the top of the base 1 are fixedly installed with multi-stage electric telescopic rods 3, and the extended ends of the multi-stage electric telescopic rods 3 are fixedly connected to the bottoms of the corresponding outer edges. The rear side of the multi-stage electric telescopic rod 3 on the left is fixedly connected with a synchronous control switch, and the synchronous control switch is electrically connected to the two multi-stage electric telescopic rods 3, which facilitates personnel to synchronously open and close the two multi-stage electric telescopic rods 3, and uses the multi-stage electric telescopic rod 3 to drive the protective cover 2 to move up and down to open or close, and uses the protective cover 2 to perform safety shielding protection on the outside;

[0027] A sealing plate 4 is provided in the protective cover 2, which is in sealing and movable contact with the tops of the two coal sample bottles 100. A sealing gasket 20 is bonded and fixed to the bottom of the sealing plate 4. The bottom of the sealing gasket 20 is in movable contact with the tops of the two coal sample bottles 100, which plays a role in movable sealing between the bottom of the sealing plate 4 and the tops of the coal sample bottles 100. Both sides of the top of the sealing plate 4 are fixedly connected with elastic vertical guide support components that are slidably connected to the inner wall of the top of the protective cover 2. The elastic vertical guide support components are used to drive the sealing plate 4 to press and seal the tops of the two coal sample bottles 100 when the protective cover 2 moves down and closes.

[0028] A double-position telescopic synchronous stirring assembly is rotatably installed between the top inner wall of the shield 2 and the sealing plate 4, the bottom of the double-position telescopic synchronous stirring assembly extends into the two coal sample bottles 100, and a driving motor 14 whose output shaft is fixedly connected to the double-position telescopic synchronous stirring assembly is fixedly installed on the top of the shield 2. The double-position telescopic synchronous stirring assembly is used to evenly mix the samples in the two coal sample bottles 100 synchronously when the driving motor 14 is started;

[0029] A water tank 15 is fixedly installed on the top of the protective cover 2, and a stirring rod cleaning assembly located between the two coal sample bottles 100 is fixedly installed on the bottom of the water tank 15. The sealing plate 4 is fixedly sleeved on the stirring rod cleaning assembly. A plurality of drainage holes 6 are provided on the top of the base 1 and the bottom of the clamping sleeve 5. A water receiving box matching the plurality of drainage holes 6 is provided under the base 1. The stirring rod cleaning assembly is used to clean the double-position telescopic synchronous stirring assembly after the coal sample bottle 100 is removed after use. The provided drainage holes 6 are used to discharge the water used for cleaning downward and collect it in the water receiving box.

[0030] Specifically, the elastic vertical guide support assembly includes an L-shaped guide rod 7 fixedly connected to the top of the sealing plate 4, and the protective cover 2 is slidably mounted on the two L-shaped guide rods 7, wherein two rectangular guide holes are opened on the top inner wall of the protective cover 2, which are respectively slidably mounted on the outer sides of the corresponding L-shaped guide rods 7, so as to allow the L-shaped guide rods 7 to pass through and guide their vertical sliding. Two compression springs 8 in a compressed state are fixedly connected between the top of the sealing plate 4 and the top inner wall of the protective cover 2, and the compression springs 8 are movably mounted on the corresponding L-shaped guide rods 7; the L-shaped guide rod 7 and the compression spring 8 are arranged to cooperate with each other, and when the protective cover 2 moves upward, the compression force on the compression spring 8 is released, and the sealing plate 4 is driven upward by the compression spring 8 to release the sealing work, and when the protective cover 2 moves downward, the compression spring 8 drives the sealing plate 4 downward to elastically press and seal the two coal sample bottles 100.

[0031] Furthermore, the double-position telescopic synchronous stirring assembly includes two rotating shafts 9 rotatably mounted on the inner wall of the top of the protective cover 2, wherein the inner wall of the top of the protective cover 2 is provided with two first circular holes, a first bearing is fixedly sleeved in the first circular hole, the inner ring of the first bearing is fixedly sleeved with the outer side of the corresponding rotating shaft 9, which plays the effect of rotatably mounting the rotating shaft 9, a vertical guide sleeve 11 is slidingly sleeved on the rotating shaft 9, and the sealing plate 4 is rotatably sleeved on the two vertical guide sleeves 11, wherein the top of the sealing plate 4 is provided with two second circular holes, a second bearing is fixedly sleeved in the second circular hole, the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding vertical guide sleeve 11, which plays the effect of rotatably mounting the vertical guide sleeve 11, and the vertical guide sleeve 11 and the easy rotation method can prevent the rotating shaft 9 from rotating with the vertical guide sleeve 11. The sealing plate 4 undergoes hard rotational grinding, and the bottom end of the rotating shaft 9 extends into the corresponding coal sample bottle 100. A plurality of stirring rods 10 are fixedly connected to the outside of the rotating shaft 9. A synchronous wheel 12 located above the sealing plate 4 is fixedly sleeved on the rotating shaft 9. The two synchronous wheels 12 are transmission-connected with the same synchronous belt 13. The top end of the rotating shaft 9 on the left is fixedly connected to the bottom end of the output shaft of the driving motor 14. The rotating shaft 9, vertical guide sleeve 11, stirring rod 10, synchronous wheel 12 and synchronous belt 13 are arranged to cooperate with each other, and the driving motor 14 is used to drive the rotating shaft 9 on the left to rotate. When the rotating shaft 9 on the left rotates, the rotating shaft 9 on the right is driven to rotate synchronously under the action of the synchronous parts. The two rotating shafts 9 drive the plurality of stirring rods 10 to synchronously and evenly mix the samples in the two coal sample bottles 100.

[0032] Furthermore, the stirring rod cleaning assembly includes a water pump 16 fixedly installed at the bottom of the water tank 15, wherein an avoidance hole is opened on the top inner wall of the protective cover 2, the water pump 16 is located in the avoidance hole and does not contact the inner wall of the avoidance hole, the water inlet of the water pump 16 extends into the water tank 15, and the water outlet of the water pump 16 is connected and fixed with an inner tube 17, the bottom end of the inner tube 17 extends into the protective cover 2, and a sealing sliding sleeve on the inner tube 17 is provided with an outer tube 18 with a blocking structure at the bottom end, and a sealing plate 4 is fixedly sleeved on the outer tube 18, wherein a sleeve hole fixedly connected to the outer side of the outer tube 18 is opened on the top of the sealing plate 4, Both sides of the outer tube 18 are connected and fixed with multiple water spray heads 19, which are located between the two coal sample bottles 100 and cooperate with the multiple stirring rods 10. The inner tube 17 is located on the inner side of the synchronous belt 13 and does not contact the inner side thereof. The water pump 16, inner tube 17, outer tube 18 and water spray heads 19 cooperate with each other. After use and when the coal sample bottle 100 is taken away, the water in the water tank 15 is extracted by the water pump 16 and pumped into the outer tube 18 through the inner tube 17. The water is sprayed to both sides through the multiple water spray heads 19, thereby realizing flushing and self-cleaning of the two rotating shafts 9 and the multiple stirring rods 10.

[0033] The method of using this embodiment is as follows: when in use, first start the two multi-stage electric telescopic rods 3 in the forward direction to drive the shield 2 to rise and open, then respectively insert the two coal sample bottles 100 with coal samples inside into the corresponding clamping sleeves 5, and start the multi-stage electric telescopic rods 3 in the reverse direction to drive the shield 2 to move downward, and the shield 2 drives the two rotating shafts 9 to be inserted downward into the corresponding coal sample bottles 100, and at the same time, the shield 2 drives the sealing plate 4 to move downward through the two compression springs 8, and the sealing plate 4 drives the sealing gasket 20 to move downward until it contacts the tops of the two coal sample bottles 100 , will be blocked and restricted by it, at this time, the shield 2 that continues to move downward slides downward on the two L-shaped guide rods 7 and compresses the compression spring 8. At this time, the shield 2 drives the inner tube 17 to slide downward in the outer tube 18 through the water tank 15 and the water pump 16 in turn, and uses the elastic force of the compression spring 8 to drive the sealing plate 4 to elastically tighten and seal the two coal sample bottles 100 stably, so as to achieve the effect of automatically sealing the two coal sample bottles 100 stably and splash-proofing before stirring, and the shield 2 is used in combination with the surrounding shielding on the outside to further improve the safety of the operation of the coal sample bottles 100;

[0034] Start the driving motor 14 to drive the rotating shaft 9 on the left to rotate, the rotating shaft 9 on the left drives the synchronous wheel 12 on the left to rotate, the synchronous wheel 12 on the left drives the synchronous wheel 12 on the right to rotate through the synchronous belt 13, the synchronous wheel 12 on the right drives the rotating shaft 9 on the right to rotate, the two rotating shafts 9 rotate synchronously and drive the multiple stirring rods 10 to stir the inside of the two coal sample bottles 100 synchronously and automatically and uniformly, so as to achieve the effect of automatically stirring the two coal sample bottles 100 at the same time, and improve the stability of use and work efficiency by using the synchronous sealing and splash-proof method in combination with the synchronous stirring operation;

[0035] After the mixing is completed, the multi-stage electric telescopic rod 3 is started forward again to drive the shield 2 to move upward to remove the shielding of the coal sample bottle 100. When the shield 2 moves upward, the compression force on the compression spring 8 is released, and the sealing plate 4 is driven to move upward to release the sealing work. At the same time, the shield 2 drives the two rotating shafts 9 to move out of the corresponding coal sample bottles 100 respectively, and then the personnel can take the two coal sample bottles 100 away for quality inspection. After taking them away, the multi-stage electric telescopic rod 3 is started in the reverse direction to drive the shield 2 to close downward again, and at this time, the drive motor 14 and the water pump 16 are started. When the driving motor 14 is started, the two rotating shafts 9 and the multiple stirring rods 10 are driven to rotate again. When the water pump 16 is started, the water in the water tank 15 is extracted and pumped into the outer tube 18 through the inner tube 17. The water is sprayed to both sides through multiple water spray heads 19. The sprayed water rinses the two rotating shafts 9 and the multiple stirring rods 10 for self-cleaning. The rinsed water is discharged downward through the multiple drainage holes 6 and collected in the water receiving box, so as to achieve the effect of automatically and quickly cleaning the stirring rods after use, avoid the residual coal sample outside the stirring rods affecting the quality of the next sample, and improve the use effect.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-cleaning stirring device, comprising a base (1), characterized in that: The four corners of the bottom of the base (1) are fixedly connected with supporting legs, the top of the base (1) is embedded and fixed with two clamping sleeves (5) with openings at the top, and a coal sample bottle (100) is movably clamped in the clamping sleeve (5), the top of the base (1) is sealed and movably contacted with a protective cover (2) with an opening at the bottom, the two coal sample bottles (100) are both located in the protective cover (2), and the tops of both sides of the protective cover (2) are integrally provided with outer edges, and multi-stage electric telescopic rods (3) are fixedly installed on both sides of the top of the base (1), and the extended ends of the multi-stage electric telescopic rods (3) are fixedly connected to the bottoms of the corresponding outer edges; The shield (2) is provided with a sealing plate (4) in sealing and movable contact with the tops of the two coal sample bottles (100), and both sides of the top of the sealing plate (4) are fixedly connected with elastic vertical guide support components that are slidably connected and interlaced with the inner wall of the top of the shield (2); A double-position telescopic synchronous stirring assembly is rotatably mounted between the top inner wall of the shield (2) and the sealing plate (4), the bottom of the double-position telescopic synchronous stirring assembly extends into the two coal sample bottles (100), and a driving motor (14) whose output shaft is fixedly connected to the double-position telescopic synchronous stirring assembly is fixedly mounted on the top of the shield (2); A water tank (15) is fixedly mounted on the top of the shield (2), a stirring rod cleaning assembly located between two coal sample bottles (100) is fixedly mounted on the bottom of the water tank (15), and a sealing plate (4) is fixedly sleeved on the stirring rod cleaning assembly.

2. A self-cleaning stirring device according to claim 1, characterized in that: The elastic vertical guide support assembly comprises an L-shaped guide rod (7) fixedly connected to the top of the sealing plate (4); the protective cover (2) is slidably sleeved on the two L-shaped guide rods (7); two compression springs (8) in a compressed state are fixedly connected between the top of the sealing plate (4) and the top inner wall of the protective cover (2); the compression springs (8) are movably sleeved on the corresponding L-shaped guide rods (7).

3. A self-cleaning stirring device according to claim 2, characterized in that: The double-position telescopic synchronous stirring assembly comprises two rotating shafts (9) rotatably mounted on the inner wall of the top of the protective cover (2); a vertical guide sleeve (11) is slidably sleeved on the rotating shaft (9); a sealing plate (4) is rotatably sleeved on the two vertical guide sleeves (11); the bottom end of the rotating shaft (9) extends into the corresponding coal sample bottle (100); a plurality of stirring rods (10) are fixedly connected to the outer side of the rotating shaft (9); a synchronous wheel (12) located above the sealing plate (4) is fixedly sleeved on the rotating shaft (9); the two synchronous wheels (12) are transmission-connected with the same synchronous belt (13); the top end of the rotating shaft (9) located on the left is fixedly connected to the bottom end of the output shaft of the driving motor (14).

4. A self-cleaning stirring device according to claim 3, characterized in that: The stirring rod cleaning assembly comprises a water pump (16) fixedly mounted at the bottom of a water tank (15); a water inlet of the water pump (16) extends into the water tank (15); a water outlet of the water pump (16) is connected and fixedly mounted with an inner tube (17); the bottom end of the inner tube (17) extends into the shield (2); a sealing sliding sleeve on the inner tube (17) is provided with an outer tube (18) with a bottom end as a blocking structure; a sealing plate (4) is fixedly mounted on the outer tube (18); a plurality of water spray heads (19) are connected and fixedly mounted on both sides of the outer tube (18); the plurality of water spray heads (19) are located between two coal sample bottles (100) and cooperate with the plurality of stirring rods (10); the inner tube (17) is located on the inner side of the synchronous belt (13) and does not contact the inner side thereof.

5. The self-cleaning stirring device according to claim 1, characterized in that: The top of the base (1) and the bottom of the sleeve (5) are both provided with a plurality of drainage holes (6), and a water receiving box matching the plurality of drainage holes (6) is provided below the base (1).

6. A self-cleaning stirring device according to claim 1, characterized in that: A rectangular sealing ring is bonded and fixed to the bottom of the shield (2), and the bottom of the rectangular sealing ring is in active contact with the top of the base (1).

7. A self-cleaning stirring device according to claim 1, characterized in that: A sealing gasket (20) is bonded and fixed to the bottom of the sealing plate (4), and the bottom of the sealing gasket (20) is in active contact with the tops of the two coal sample bottles (100).

8. The self-cleaning stirring device according to claim 1, characterized in that: A synchronous control switch is fixedly connected to the rear side of the multi-stage electric telescopic rod (3) located on the left side, and the synchronous control switch is electrically connected to the two multi-stage electric telescopic rods (3).

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