A building material drying device

Abstract

This invention belongs to the technical field of drying devices, specifically relating to a drying device for building materials, including a tank. A cavity is formed in the lower side wall of the tank, and a heating plate is installed inside the cavity. A mounting shell is installed at the upper end of the tank, and a cover plate is hinged to the upper side of the mounting shell. A stirring mechanism is located inside the tank. Materials are placed inside the tank for drying. The stirring mechanism drives a first arc-shaped plate and a second arc-shaped plate to revolve around each other while intermittently flipping upwards, thoroughly stirring the granular materials to ensure more uniform heating, improve drying efficiency, and reduce production time.

Description

Technical Field

[0001] This invention belongs to the field of drying equipment technology, and specifically relates to a drying device for building materials. Background Technology

[0002] Building materials are various materials used in construction projects. There are many types of building materials, broadly categorized into inorganic materials, organic materials, and composite materials. Granular wall building materials require drying during production to ensure their quality; examples include polystyrene granules, ceramic granules, and perlite granules. Furthermore, when not in use, these materials are often left unattended, leading to moisture absorption. Moisture affects the performance and safety of the materials, so drying is necessary before use. Traditional drying methods involve placing the materials in a drying oven and stirring them. However, stirring is done by rotating the blades in one direction, which is ineffective, results in uneven heating, hinders thorough drying, and leads to low processing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a building material drying device that allows materials to be placed inside a tank for drying. A stirring mechanism drives the first and second arc-shaped plates to revolve and intermittently flip upwards, which fully stirs the granular materials, making them heat more evenly, improving the drying efficiency of the materials, and reducing production time.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A building material drying device includes a tank, a cavity is formed in the lower side wall of the tank, a heating plate is installed inside the cavity, an installation shell is installed at the upper end of the tank, a cover plate is hinged to the upper side of the installation shell, and a stirring mechanism is provided inside the tank.

[0006] The stirring mechanism includes a first gear ring rotatably mounted on the upper end of the tank, the first gear ring having a drive assembly, and two sets of symmetrically distributed tumbling assemblies mounted on the first gear ring. Each tumbling assembly includes a first rack, the first gear ring having a through groove, the first rack being vertically slidably mounted in the through groove, a first spring being provided between the lower side of the first rack and the mounting shell, the first gear ring being rotatably mounted with a first gear meshing with the first rack via a bracket, a connecting rod being connected to the lower side of the first gear, the end of the connecting rod being connected to a first arc-shaped plate abutting against the side wall of the tank, and the lower end of the first arc-shaped plate being connected to a second arc-shaped plate abutting against the bottom of the tank.

[0007] The mounting shell has an annular cavity on its upper side, and a second gear ring is rotatably assembled inside the annular cavity. The second gear ring has a rotating component, and a boss that matches the first gear rack is fixed on the lower side of the second gear ring. Both ends of the boss are machined with bevels.

[0008] The drive assembly includes a housing mounted on one side of the tank, a motor fixed inside the housing, and a second gear connected to the output shaft of the motor, the second gear meshing with the first gear ring.

[0009] The rotating component includes a box fixed to the upper side of the housing. The upper and lower walls of the box are rotatably equipped with first helical teeth, and the side walls of the box are rotatably equipped with second helical teeth. The second helical teeth mesh with the two first helical teeth. The lower first helical teeth are connected to the second gear via a transmission shaft, and the upper first helical teeth are connected to the third gear via a rotating shaft. The third gear meshes with the second gear ring.

[0010] The first arc-shaped plate has an internal mounting cavity, and a sealing plate is slidably mounted inside the mounting cavity. The first arc-shaped plate has a plurality of evenly distributed first through holes, and the sealing plate has second through holes corresponding one-to-one with the plurality of first through holes. A second spring is provided between the lower side of the sealing plate and the bottom wall of the mounting cavity. A sliding rod is fixedly connected to the upper end of the sealing plate. The sliding rod slides out of the mounting cavity and is connected to a circular block. The first toothed ring is fixed with an abutment shell that matches the circular block.

[0011] The upper wall of the abutment shell is machined with a first arc-shaped segment, a transition segment and a second arc-shaped segment. The first arc-shaped segment and the second arc-shaped segment are both set with the first gear as the center. The first arc-shaped segment and the second arc-shaped segment are connected by the transition segment. The circular block abuts against the first arc-shaped segment.

[0012] The tank is equipped with an auxiliary drying component located above the heating plate.

[0013] The second arc-shaped plate has mounting seats fixed on both its front and rear sides. A pressing block is rotatably assembled between the two mounting seats via a circular shaft. A fourth gear is rotatably assembled inside the two mounting seats. The second arc-shaped plate has two sliding grooves distributed front and rear. A second rack is slidably assembled in each of the two sliding grooves. The two second racks are respectively meshed with the two fourth gears. A third spring is provided between the second rack and the sliding groove. A rectangular groove is provided on the side of the second arc-shaped plate away from the first arc-shaped plate. A movable plate slides in the rectangular groove. The second arc-shaped plate has a pull rope groove. A pull rope is provided in the pull rope groove. The two ends of the pull rope are respectively connected to the movable plate and the second rack. One end of the movable plate slides out of the second arc-shaped plate and is connected to an abutment block.

[0014] The upper end of the extrusion block is arc-shaped and has the same curvature as the first arc-shaped plate.

[0015] The tank body is provided with a discharge pipe on the lower side, and the discharge pipe is equipped with an electrically controlled valve.

[0016] This invention involves immersing materials inside a tank for drying. A stirring mechanism drives the first and second arc-shaped plates to revolve while intermittently flipping them upwards, thus thoroughly stirring the granular materials, making them heat more evenly, improving the drying efficiency of the materials, and reducing production time. Attached Figure Description

[0017] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of a building material drying device according to the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic cross-sectional view of an embodiment of a building material drying device according to the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic cross-sectional view of an embodiment of a building material drying device according to the present invention. Figure 2 ;

[0021] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0022] Figure 5 This is a schematic diagram of the stirring assembly of the present invention;

[0023] Figure 6 This is a cross-sectional structural diagram of the stirring component of the present invention;

[0024] Figure 7 for Figure 6 Enlarged structural diagram at point B;

[0025] Figure 8 This is a schematic cross-sectional view of the second arc-shaped plate of the present invention. Figure 1 ;

[0026] Figure 9 This is a schematic cross-sectional view of the second arc-shaped plate of the present invention. Figure 2 ;

[0027] Figure 10 This is a schematic cross-sectional view of an embodiment of a building material drying device according to the present invention. Figure 3 .

[0028] The symbols for the main components are explained below:

[0029] Tank body 1, heating plate 11, mounting shell 12, cover plate 13, first gear ring 2, first rack 21, first spring 211, first gear 23, connecting rod 24, first arc plate 25, second arc plate 26, annular cavity 3, second gear ring 31, boss 32, shell 4, motor 41, second gear 42, box body 43, first helical tooth 44, second helical tooth 45, third gear 46, mounting cavity 5, sealing plate 51, first through hole 52, second through hole 53, second spring 54, sliding rod 55, circular block 57, abutment shell 58, first arc segment 581, transition segment 582, second arc segment 583, mounting base 6, extrusion block 61, fourth gear 63, sliding groove 64, second rack 65, third spring 651, rectangular groove 66, movable plate 67, pull rope 68, abutment block 69, discharge pipe 7, electric control valve 71. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] like Figure 1-10 As shown, a building material drying device of the present invention includes a tank 1, a cavity is provided on the lower side wall of the tank 1, a heating plate 11 is installed inside the cavity, an installation shell 12 is installed on the upper end of the tank 1, a cover plate 13 is hinged to the upper side of the installation shell 12, and a stirring mechanism is provided inside the tank 1.

[0032] The stirring mechanism includes a first gear ring 2 rotatably mounted on the upper end of the tank body 1. The first gear ring 2 is provided with a drive assembly. The first gear ring 2 is equipped with two sets of symmetrically distributed stirring components. The stirring components include a first rack 21. The first gear ring 2 has a through groove. The first rack 21 is vertically slidably mounted in the through groove. A first spring 211 is provided between the lower side of the first rack 21 and the mounting shell 12. The first gear ring 2 is rotatably mounted with a first gear 23 that meshes with the first rack 21 through a bracket. A connecting rod 24 is connected to the lower side of the first gear 23. The end of the connecting rod 24 is connected to a first arc plate 25 that abuts against the side wall of the tank body 1. The lower end of the first arc plate 25 is connected to a second arc plate 26 that abuts against the bottom of the tank body 1.

[0033] An annular cavity 3 is provided on the upper side of the mounting shell 12. A second gear ring 31 is rotatably assembled in the annular cavity 3. The second gear ring 31 is provided with a rotating part. A boss 32 that matches the first gear rack 21 is fixed on the lower side of the second gear ring 31. Both ends of the boss 32 are machined with bevels.

[0034] In the initial state, the upper end of the first rack 21 abuts against the upper wall of the mounting shell 12, and at this time the first arc plate 25 abuts against the side wall of the tank body 1, and the second arc plate 26 abuts against the bottom wall of the tank body.

[0035] When in use, granular building materials are put into the tank 1 for drying, such as polystyrene granules, ceramic granules, perlite granules, etc. The height of the granular materials inside the tank 1 shall not exceed half the height of the tank 1, so that the whole material is located inside the heating area. Then, the heating plate 11 is turned on to heat the inside of the tank 1 and dry the granular materials.

[0036] When drying the granular material, the stirring mechanism is activated simultaneously to stir the granular material. That is, the first toothed ring 2 is driven to rotate by the drive component. When the first toothed ring 2 rotates, it can drive the first arc plate 25 and the second arc plate 26 to rotate synchronously through the connecting rod 24. The first arc plate 25 and the second arc plate 26 abut against the side wall and bottom wall of the tank 1, respectively. Therefore, the rotation of the first arc plate 25 can scrape off the material adhering to the side wall of the tank 1, so as to avoid the material adhering to the side wall and being overheated and causing quality changes, and also to avoid the particles adhering to the side wall and affecting the drying efficiency. The rotation of the second arc plate 26 can turn over the material at the bottom of the tank 1, so that the particles are heated more evenly.

[0037] When the first gear ring 2 drives the first rack 21 to rotate to one side of the boss 32, the upper end of the first rack 21 will abut against the inclined surface of the boss 32, thereby pushing the first rack 21 to move downward. Since the first rack 21 meshes with the first gear 23, when the first rack 21 moves downward, it can drive the first gear 23 to gradually rotate upward, thereby driving the first arc plate 25 and the second arc plate 26 to rotate upward through the connecting rod 24, turning the granular material. When the upper end of the first rack 21 moves to the other side of the inclined surface of the boss 32, it will be pushed upward by the elastic force of the first spring 211. At the same time, the first arc plate 25 and the second arc plate 26 will drive the first gear 23 to rotate, forcing the first rack 21 to move upward to reset.

[0038] When the first arc plate 25 and the second arc plate 26 move downwards, since the bottom of the first arc plate 25 and the bottom of the second arc plate 26 are both arc-shaped, their downward movement can push the particulate material to both sides until the first arc plate 25 abuts against the side wall of the tank 1 and the second arc plate 26 abuts against the bottom wall of the tank. This design can prevent the particulate material from obstructing the resetting of the first arc plate 25 and the second arc plate 26.

[0039] With the continuous rotation of the first gear ring 2, the first arc plate 25 and the second arc plate 26 can rotate back and forth while revolving, effectively stirring the granular material, making it more evenly heated, and improving the drying efficiency of the material. When the first arc plate 25 and the second arc plate 26 rotate to the middle of the material, they form a stirring rod during their revolution, stirring the inside of the material. At the same time, when the first arc plate 25 and the second arc plate 26 rotate upward, they can lift the granular material at the bottom until the first arc plate 25 and the second arc plate 26 leave the upper surface of the material. The material on the first arc plate 25 and the second arc plate 26 will fall downward, increasing the fluidity of the granular material and achieving a better drying effect.

[0040] This invention involves immersing materials inside a tank for drying. A stirring mechanism drives the first and second arc-shaped plates to revolve while intermittently flipping them upwards, thus thoroughly stirring the granular materials, making them heat more evenly, improving the drying efficiency of the materials, and reducing production time.

[0041] The drive assembly includes a housing 4 installed on one side of the tank 1. A motor 41 is fixed inside the housing 4. The output shaft of the motor 41 is connected to a second gear 42, which meshes with the first gear ring 2. Thus, by starting the motor 41 to drive the second gear 42 to rotate, the first gear ring 2 can be driven to rotate, thereby stirring the particulate material inside the tank 1 and making it heat more evenly.

[0042] The rotating component includes a box 43 fixed to the upper side of the housing 4. First helical teeth 44 are rotatably mounted on both the upper and lower walls of the box 43, and second helical teeth 45 are rotatably mounted on the side walls of the box 43. The second helical teeth 45 mesh with the two first helical teeth 44. The lower first helical teeth 44 are connected to a second gear 42 via a transmission shaft, and the upper first helical teeth 44 are connected to a third gear 46 via a rotating shaft. The third gear meshes with a second gear ring 31. Thus, when the motor 41 drives the second gear 42 to rotate, it can synchronously drive the first helical teeth 44 located on the lower side of the box 43 to rotate. Since the lower first helical teeth 44 are connected to the upper first helical teeth 44 via the second helical teeth 45 on the side walls, this is beneficial to the overall rotational function. Therefore, when the first helical tooth 44 on the lower side rotates, it can drive the second helical tooth 45 to rotate, which in turn drives the first helical tooth 44 on the upper side to rotate in the opposite direction, driving the third gear 46 to rotate in the opposite direction, which in turn drives the second gear ring 31 to rotate in the opposite direction relative to the first gear ring 2. The boss 32 moves with the second gear ring 31, changing the position of the boss 32, so that the position of the first arc plate 25 and the second arc plate 26 flipping upwards changes each time. This can fully stir the particulate material inside the tank 1, and can also ensure that the first arc plate 25 and the second arc plate 26 can fully contact the side wall of the tank 1, avoiding the first arc plate 25 and the second arc plate 26 flipping upwards in the same position each time.

[0043] The first arc plate 25 has an installation cavity 5 inside, and a sealing plate 51 is slidably assembled in the installation cavity 5. The first arc plate 25 has a number of evenly distributed first through holes 52. The sealing plate 51 has second through holes 53 that correspond one-to-one with the number of first through holes 52. A second spring 54 is provided between the lower side of the sealing plate 51 and the bottom wall of the installation cavity 5. A sliding rod 55 is fixedly connected to the upper end of the sealing plate 51. The sliding rod 55 slides out of the installation cavity 5 and is connected to a circular block 57. The first toothed ring 2 is fixed with an abutment shell 58 that matches the circular block 57.

[0044] The upper wall of the abutment shell 58 is machined with a first arc-shaped segment 581, a transition segment 582 and a second arc-shaped segment 583. The first arc-shaped segment 581 and the second arc-shaped segment 583 are both set with the first gear 23 as the center. The first arc-shaped segment 581 and the second arc-shaped segment 583 are connected by the transition segment 582. The circular block 57 abuts against the first arc-shaped segment 581.

[0045] The tank body 1 is equipped with an auxiliary drying component located on the upper side of the heating plate 11;

[0046] The auxiliary drying component can be a drying lamp arranged in a ring inside the tank 1, located above the heating plate 11. Therefore, the drying lamp can dry the upper surface of the granular material and improve the drying efficiency. The auxiliary drying component can also be a hot air blower, which can accelerate the drying of the granular material by blowing hot air into the tank 1.

[0047] Furthermore, a heating plate can also be installed on the bottom wall of tank 1 to improve the drying efficiency of materials;

[0048] When the first arc-shaped plate 25 abuts against the side wall of the tank 1, the circular block 57 abuts against the first arc-shaped segment 581 of the abutment shell 58, pushing the sealing plate 51 downward within the mounting cavity 5. The several second through holes 53 on the sealing plate 51 are staggered from the several first through holes 52 on the first arc-shaped plate 25. Therefore, when the first arc-shaped plate 25 flips upward, its cooperation with the second arc-shaped plate 26 can lift some of the granular material upward until the lower end of the first arc-shaped plate 25 leaves the upper surface of the granular material. At this point, the circular block 57 moves through the transition section 582 to the second arc-shaped segment 583, and under the elastic force of the second spring 54, pushes the sealing plate 51 upward. The circular block 57 and the second arc-shaped segment 581... 3. The sealing plate 51 has several second through holes 53 aligned with the first through holes 52 of the first arc plate 25, so that the granular material on the first arc plate 25 can fall downward through the through holes. The falling granular material can be dried by the auxiliary drying component. During the downward falling process, the granular material is relatively dispersed, and the gap between each particle is large, so it can be fully dried. When the first arc plate 25 moves downward, it can drive the circular block 57 to abut against the first arc segment 581, so that the sealing plate 51 is reset. In this way, every time the first arc plate 25 is lifted upward, a part of the granular material can be lifted for further drying, which can effectively speed up the drying efficiency.

[0049] The second arc-shaped plate 26 has mounting seats 6 fixed on both its front and rear sides. A pressing block 61 is rotatably mounted between the two mounting seats 6 via a round shaft. A fourth gear 63 is rotatably mounted inside the two mounting seats 6. The second arc-shaped plate 26 has two front and rear distributed sliding grooves 64. A second rack 65 is slidably mounted in each of the two sliding grooves 64. The two second racks 65 are respectively meshed with the two fourth gears 63. A third spring 651 is provided between the second rack 65 and the sliding groove 64. A rectangular groove 66 is provided on the side of the second arc-shaped plate 26 away from the first arc-shaped plate 25. A movable plate 67 slides in the rectangular groove 66. The second arc-shaped plate 26 has a pull rope groove. A pull rope 68 is provided in the pull rope groove. The two ends of the pull rope 68 are respectively connected to the movable plate 67 and the second rack 65. One end of the movable plate 67 slides out of the second arc-shaped plate 26 and is connected to an abutment block 69.

[0050] When the second arc-shaped plate 26 contacts the bottom wall of the tank 1, the extrusion block 61 abuts against the second arc-shaped plate 26. During the upward flipping process of the second arc-shaped plate 26, it can cooperate with the first arc-shaped plate 25 to lift the granular material upward until the lower ends of both leave the upper surface of the granular material. The through hole of the first arc-shaped plate 25 opens, and the granular material located on the upper side of the first arc-shaped plate 25 falls downward through the through hole. However, some clumps of granular material will not be able to fall downward through the through hole and will remain on the upper surface of the first arc-shaped plate 25 until the upper end of the abutment block 69 connected to the second arc-shaped plate 26 abuts against the cover plate 13. Figure 10As shown, at this time, the second arc plate 26 continues to move upward, which will push the movable plate 67 into the interior of the second arc plate 26 through the abutment block 69. The movable plate 67 will drive the second rack 65 to move through the pull rope 68, which will in turn drive the fourth gear 63 to rotate. Through the round shaft, it will drive the extrusion block 61 to rotate towards the first arc plate 25, so that the extrusion block 61 will extrude the clumped granular material on the upper surface of the first arc plate 25, break it up, and prevent the clumped granular material from not being effectively dried, which can improve the drying efficiency of the granular material. When the extrusion block 61 abuts against the first arc plate 25, the second arc plate 26 moves upward to the highest position.

[0051] The second arc-shaped plate 26 moves downward, and the abutment block 69 disengages from the cover plate 13. The second rack 65 can be reset by the elastic force of the third spring 651, which in turn drives the pressing block 61 to reset.

[0052] The upper end of the extrusion block 61 is arc-shaped and has the same curvature as the first arc plate 25; in this way, when the extrusion block 61 comes into contact with the first arc plate 25, it can better fit with the first arc plate 25 and effectively break up the agglomerated particles on the surface of the first arc plate 25.

[0053] The lower side of the tank body 1 is provided with a discharge pipe 7, and the discharge pipe 7 is equipped with an electric control valve 71. After the granular material is dried, the electric control valve 71 is opened, and the tank body 1 can be tilted to the side of the discharge pipe 7 so that the material can be smoothly discharged from the tank body 1.

[0054] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A building material drying device, comprising a tank, wherein a cavity is formed in the lower side wall of the tank, and a heating plate is installed inside the cavity, characterized in that: The upper end of the tank is equipped with a mounting shell, and a cover plate is hinged to the upper side of the mounting shell. A stirring mechanism is located inside the tank. The stirring mechanism includes a first gear ring rotatably mounted on the upper end of the tank, the first gear ring having a drive assembly, and two sets of symmetrically distributed tumbling assemblies mounted on the first gear ring. Each tumbling assembly includes a first rack, the first gear ring having a through groove, the first rack being vertically slidably mounted in the through groove, a first spring being provided between the lower side of the first rack and the mounting shell, the first gear ring being rotatably mounted with a first gear meshing with the first rack via a bracket, a connecting rod being connected to the lower side of the first gear, the end of the connecting rod being connected to a first arc-shaped plate abutting against the side wall of the tank, and the lower end of the first arc-shaped plate being connected to a second arc-shaped plate abutting against the bottom of the tank. The mounting shell has an annular cavity on its upper side, and a second gear ring is rotatably assembled inside the annular cavity. The second gear ring has a rotating component, and a boss that matches the first gear is fixed on the lower side of the second gear ring. Both ends of the boss are machined with bevels. The first arc-shaped plate has an internal mounting cavity, and a sealing plate is slidably mounted in the mounting cavity. The first arc-shaped plate has a plurality of evenly distributed first through holes, and the sealing plate has second through holes that correspond one-to-one with the plurality of first through holes. A second spring is provided between the lower side of the sealing plate and the bottom wall of the mounting cavity. A sliding rod is fixedly connected to the upper end of the sealing plate. The sliding rod slides out of the mounting cavity and is connected to a circular block. The first toothed ring is fixed with an abutment shell that matches the circular block. The upper wall of the abutment shell is machined with a first arc-shaped segment, a transition segment and a second arc-shaped segment. The first arc-shaped segment and the second arc-shaped segment are both set with the first gear as the center. The first arc-shaped segment and the second arc-shaped segment are connected by the transition segment. The circular block abuts against the first arc-shaped segment. The second arc-shaped plate has mounting seats fixed on both its front and rear sides. A pressing block is rotatably assembled between the two mounting seats via a circular shaft. A fourth gear is rotatably assembled inside the two mounting seats. The second arc-shaped plate has two sliding grooves distributed front and rear. A second rack is slidably assembled in each of the two sliding grooves. The two second racks are respectively meshed with the two fourth gears. A third spring is provided between the second rack and the sliding groove. A rectangular groove is provided on the side of the second arc-shaped plate away from the first arc-shaped plate. A movable plate slides in the rectangular groove. The second arc-shaped plate has a pull rope groove. A pull rope is provided in the pull rope groove. The two ends of the pull rope are respectively connected to the movable plate and the second rack. One end of the movable plate slides out of the second arc-shaped plate and is connected to an abutment block.

2. The building material drying device according to claim 1, characterized in that: The drive assembly includes a housing mounted on one side of the tank, a motor fixed inside the housing, and a second gear connected to the output shaft of the motor, the second gear meshing with the first gear ring.

3. The building material drying device according to claim 2, characterized in that: The rotating component includes a box fixed to the upper side of the housing. The upper and lower walls of the box are rotatably equipped with first helical teeth, and the side walls of the box are rotatably equipped with second helical teeth. The second helical teeth mesh with the two first helical teeth. The lower first helical teeth are connected to the second gear via a transmission shaft, and the upper first helical teeth are connected to the third gear via a rotating shaft. The third gear meshes with the second gear ring.

4. The building material drying device according to claim 1, characterized in that: The tank is equipped with an auxiliary drying component located above the heating plate.

5. A building material drying device according to claim 1, characterized in that: The upper end of the extrusion block is arc-shaped and has the same curvature as the first arc-shaped plate.

6. A building material drying device according to claim 1, characterized in that: The tank body is provided with a discharge pipe on the lower side, and the discharge pipe is equipped with an electrically controlled valve.

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