A fire water pump with anti-clogging structure

Abstract

The present invention relates to the technical field of fire pumps, and discloses a fire pump with an anti-blocking structure, including a water pump, a water inlet pipe, an anti-blocking mechanism, an air intake assembly and a ventilation mechanism. A gear box is provided on one side of the water pump, a universal joint head is installed on the input shaft of the gear box, a water inlet is provided on one side of the water pump, a water inlet pipe is installed on the water inlet, a special-shaped cavity is provided in the middle of the water inlet pipe, the anti-blocking mechanism includes a filter plate and a driving impeller one, the air intake assembly includes two groups of driving impellers two, and the ventilation mechanism includes driving impeller three and two ventilation pipes. The present invention can form a circulating water flow at the bottom of the water inlet pipe through the setting of the anti-blocking mechanism, and the filter plate is tilted by the water flow impacting the filter plate, which is convenient for separating debris. Through the setting of the air intake assembly, the filter plate can be continuously swung when pumping water, so that the debris on the filter plate is easier to fall off, avoiding the possible blockage of the filter plate.

Description

Technical Field

[0001] The invention relates to the technical field of fire water pumps, in particular to a fire water pump with an anti-clogging structure. Background Art

[0002] Fire pumps play a key role in firefighting. In the prior art, a filter is usually installed at the water inlet of the pump to prevent debris from being sucked into the pump. If there are too many impurities in the water, the filter may be clogged. In particular, fire pumps used in fire trucks are complex and changeable. When the stored water is used up, they usually choose to take water from nearby water sources to extinguish the fire. When there are too many impurities in the water source, the filter is more likely to be clogged. In severe cases, it may also cause a decrease in water pressure, affecting the progress of firefighting and the service life of the pump. Therefore, a fire pump with an anti-clogging structure is needed to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a fire water pump with an anti-clogging structure to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] The present invention is a fire water pump with an anti-blocking structure, comprising a water pump and a water inlet pipe, a gear box is arranged on one side of the water pump, a universal joint head is fixedly installed on the input shaft of the gear box away from the water pump, a water inlet is fixedly connected to the side of the water pump away from the gear box, a drain is fixedly connected to the side wall of the water pump, a rotating shaft is rotatably installed at the central axis of the water pump, one end of the rotating shaft is fixedly connected to the output end of the gear box, a water pump impeller is arranged inside the water pump, the water pump impeller is fixedly installed on the rotating shaft, one end of the water inlet pipe is fixedly installed on the water inlet, and further comprises:

[0006] The middle part of the water inlet pipe is fixedly connected with a special-shaped cavity, the bottom of the water inlet pipe is fixedly connected with a first cylindrical shell and a second cylindrical shell, the top of the water inlet pipe is fixedly connected with a third cylindrical shell and an exhaust pipe, the first cylindrical shell and the third cylindrical shell are located on a side of the special-shaped cavity away from the water pump, the second cylindrical shell and the exhaust pipe are located on a side of the special-shaped cavity close to the water pump, and the top of the exhaust pipe is fixedly connected with a horizontal pipe;

[0007] The anti-blocking mechanism includes a filter plate and a driving impeller 1, the filter plate is arranged inside the special-shaped cavity, and the driving impeller 1 is arranged inside the first cylindrical shell;

[0008] An air intake assembly, the air intake assembly includes two sets of driving impellers 2, and the two sets of driving impellers 2 are symmetrically arranged inside the third cylindrical shell;

[0009] The ventilation mechanism comprises a driving impeller three and two ventilation pipes. The driving impeller three is arranged inside the second cylindrical shell, and the two ventilation pipes are respectively fixedly installed on one end of the horizontal pipe.

[0010] Furthermore, the middle parts of the two opposite side walls of the first cylindrical shell are fixedly connected with a mounting groove 1, the bottom of the first cylindrical shell is fixedly connected with a connecting pipe, and the filter screen is fixedly installed inside one end of the filter screen away from the first cylindrical shell;

[0011] The middle parts of the two opposite side walls of the second cylindrical shell are fixedly connected with a second mounting groove, and the bottom of the second cylindrical shell is fixedly connected with a drainage channel;

[0012] The middle parts of the two opposite side walls of the third cylindrical shell are fixedly connected with mounting grooves three, and the top of the third cylindrical shell is fixedly connected with an air intake pipe.

[0013] Furthermore, the top inner wall and the bottom inner wall of the special-shaped cavity are both arc-shaped, the radius of the arc-shaped inner wall at the top of the special-shaped cavity is smaller than the radius of the arc-shaped inner wall at the bottom, and mounting grooves four are fixedly connected on the inner walls on both sides of the opposite sides of the special-shaped cavity, and the centers of the trajectories of the top inner wall and the bottom inner wall of the special-shaped cavity are both on the central axis of the mounting groove four, and a sewage pipe is fixedly connected to the bottom of the special-shaped cavity, and a removable sealing plate is installed at the bottom of the sewage pipe, and the end of the connecting pipe away from the first cylindrical shell is connected to the sewage pipe.

[0014] Furthermore, a cylindrical shaft is fixedly connected to the middle of the filter plate, and the cylindrical shaft is rotatably installed in a pair of mounting grooves. The top of the filter plate slides along the top inner wall of the special-shaped cavity, and the bottom of the filter plate slides along the bottom inner wall of the special-shaped cavity. An arc-shaped baffle is fixedly connected to one side of the bottom of the filter plate close to the second cylindrical shell, and the side wall of the arc-shaped baffle is always in contact with the bottom inner wall of the special-shaped cavity, and a sieve hole is opened inside the arc-shaped baffle.

[0015] Furthermore, a central shaft 1 is fixedly connected to the central axis of the driving impeller 1, and the central shaft 1 is rotatably installed inside a pair of mounting grooves 1. Grooves 1 are provided on both sides of a plurality of blades of the driving impeller 1.

[0016] Furthermore, a central shaft 2 is fixedly connected to the central axis of the driving impeller 2, an eccentric shaft is fixedly connected between the two central shafts 2, a groove 2 is provided on one side wall of several blades of the driving impeller 2, the ends of the two central shafts 2 that are away from each other are rotatably installed together in a pair of mounting grooves 3, a transmission groove 1 is provided between the two groups of driving impellers 2, the eccentric shaft is slidably arranged in the transmission groove 1, a connecting rod is fixedly connected to the top of the transmission groove 1, a movable plug is fixedly connected to the top of the connecting rod, the movable plug is slidably arranged in the air intake pipe, a circular plate is provided above the movable plug, the circular plate is fixedly installed in the air intake pipe, the movable plug and the circular plate are jointly provided with air holes, a push rod is fixedly connected to the bottom of the circular plate, a cylindrical cavity is provided in the movable plug, a deep hole is provided on the bottom inner wall of the cylindrical cavity, a spring is provided in the deep hole, a plug rod is slidably arranged in the spring, a mounting plate is fixedly connected to the top of the plug rod, a gap is left between the side wall of the mounting plate and the inner wall of the cylindrical cavity, and a sealing ring is fixedly installed on the top of the plug rod.

[0017] Furthermore, a central shaft three is fixedly connected to the central axis of the driving impeller three, and the central shaft three is rotatably installed inside a pair of mounting grooves two. A groove three is opened on the side wall of one side of several blades of the driving impeller three. Both ends of the central shaft three are fixedly connected to flywheels, and an eccentric rod is fixedly connected to the side wall of the flywheel.

[0018] Furthermore, the transverse tube is connected to the ventilation pipe, a one-way valve is fixedly installed on the side wall of the ventilation pipe, a first piston and a second piston are movably arranged inside the ventilation pipe, the first piston is located below the connection part between the transverse tube and the ventilation pipe, the second piston is located above the connection part between the transverse tube and the ventilation pipe, the one-way valve is located at the bottom of the first piston, a vertical rod is fixedly connected to the bottom of the first piston, the other end of the vertical rod is fixedly connected to the transmission groove 2, and the eccentric rod is slidably arranged inside the transmission groove 2.

[0019] Furthermore, the bottom of the second piston is fixedly connected to a connecting rod 1, the bottom of the connecting rod 1 is fixedly connected to a clamping plate, the top of the first piston is fixedly connected to a connecting rod 2, the top of the connecting rod 2 is provided with an opening, the interior of the connecting rod 2 is provided with a cylindrical hole, the connecting rod 1 is slidably arranged inside the opening, and the clamping plate is slidably arranged inside the cylindrical hole.

[0020] The present invention has the following beneficial effects:

[0021] (1) The present invention has a driving impeller 1. When pumping water, the water flow drives the driving impeller 1 to rotate, and the water in the sewage pipe can be transferred to the first cylindrical shell, so that the water circulates. When impurities in the water contact and tilt to the filter plate, the impurities can be flushed into the sewage pipe by the impact of the circulating water flow, which makes it easy to open the sealing plate and discharge the impurities, thus avoiding the impurities from entering the water pump and contacting the water pump impeller, which may cause the driving impeller 1 to wear.

[0022] (2) The present invention arranges an air intake assembly so that bubbles are present in the water flow. When the bubbles enter the irregular cavity, the water flow in the irregular cavity is relatively reduced, and the pressure of the water flow on the top of the filter plate is reduced. When the bubbles pass through the filter plate, the pressure is increased, so that the filter plate can be continuously swung, making it easier for debris that may be attached to the filter plate to fall off, thereby avoiding the possibility of blockage of the filter plate.

[0023] (3) The present invention can remove bubbles in the water flow while ensuring that the water inlet pipe is sealed by setting a ventilation mechanism, thereby preventing gas from entering the water pump and causing the water pump to gasp, thereby affecting the service life of the water pump.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the gearbox structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the water pump structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the water inlet pipe structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the anti-blocking mechanism structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the air intake assembly of the present invention;

[0032] Figure 7 This is a schematic diagram of the transmission structure of the air intake assembly of the present invention;

[0033] Figure 8 This is a schematic diagram of the structure of the ventilation assembly of the present invention;

[0034] Fig. 9 This is a schematic diagram of the connection between the first piston and the second piston of the present invention;

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] In the figure: 1. water pump; 11. gear box; 111. universal joint head; 12. water inlet; 13. drain outlet; 14. rotating shaft; 15. water pump impeller; 2. water inlet pipe; 21. first cylindrical shell; 211. mounting slot 1; 212. connecting pipe; 213. filter screen; 22. second cylindrical shell; 221. mounting slot 2; 222. drainage channel; 23. third cylindrical shell; 231. mounting slot 3; 232. air inlet pipe; 24. exhaust pipe; 241. transverse pipe; 3. special-shaped cavity; 301. mounting slot 4; 302. drain pipe; 303. sealing plate; 4. filter plate; 41. cylindrical shaft; 42. arc baffle; 43. sieve hole; 5. driving impeller 1; 51. central axis 1; 52. groove 1; 6. Drive impeller 2; 61. Center axis 2; 62. Eccentric shaft; 63. Groove 2; 64. Transmission groove 1; 641. Connecting rod; 65. Movable plug; 66. Round plate; 661. Air hole; 662. Push rod; 67. Cylindrical cavity; 671. Deep hole; 672. Spring; 68. Insert rod; 681. Mounting plate; 69. Sealing ring; 7. Drive impeller 3; 71. Center axis 3; 72. Groove 3; 73. Flywheel; 731. Eccentric rod; 8. Ventilation pipe; 801. One-way valve; 81. First piston; 811. Vertical rod; 812. Transmission groove 2; 82. Second piston; 821. Connecting rod 1; 822. Clamping plate; 83. Connecting rod 2; 831. Opening; 832. Cylindrical hole. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example 1

[0039] See also Figure 1 - Figure 5 As shown, the present invention is a fire water pump with an anti-blocking structure, comprising a water pump 1 and a water inlet pipe 2, a gear box 11 is arranged on one side of the water pump 1, a universal joint head 111 is fixedly installed on the input shaft of the gear box 11 away from the water pump 1, a water inlet 12 is fixedly connected to the side of the water pump 1 away from the gear box 11, a drain port 13 is fixedly connected to the side wall of the water pump 1, a rotating shaft 14 is rotatably installed at the central axis of the water pump 1, one end of the rotating shaft 14 is fixedly connected to the output end of the gear box 11, a water pump impeller 15 is arranged inside the water pump 1, the water pump impeller 15 is fixedly installed on the rotating shaft 14, one end of the water inlet pipe 2 is fixedly installed on the water inlet 12, and further comprises:

[0040] The middle part of the water inlet pipe 2 is fixedly connected with the special-shaped cavity 3, the bottom of the water inlet pipe 2 is fixedly connected with the first cylindrical shell 21 and the second cylindrical shell 22, the top of the water inlet pipe 2 is fixedly connected with the third cylindrical shell 23 and the exhaust pipe 24, the first cylindrical shell 21 and the third cylindrical shell 23 are located on the side of the special-shaped cavity 3 away from the water pump 1, the second cylindrical shell 22 and the exhaust pipe 24 are located on the side of the special-shaped cavity 3 close to the water pump 1, and the top of the exhaust pipe 24 is fixedly connected with a transverse pipe 241;

[0041] The anti-blocking mechanism includes a filter plate 4 and a driving impeller 5, the filter plate 4 is arranged inside the special-shaped cavity 3, and the driving impeller 5 is arranged inside the first cylindrical shell 21;

[0042] The air intake assembly includes two sets of driving impellers 26, and the two sets of driving impellers 26 are symmetrically arranged inside the third cylindrical shell 23;

[0043] The ventilation mechanism includes a driving impeller 3 7 and two ventilation pipes 8. The driving impeller 3 7 is arranged inside the second cylindrical shell 22, and the two ventilation pipes 8 are respectively fixedly installed on one end of the cross pipe 241.

[0044] The middle parts of the two opposite side walls of the first cylindrical shell 21 are fixedly connected with a mounting groove 1 211, the bottom of the first cylindrical shell 21 is fixedly connected with a connecting pipe 212, and the filter screen 213 is fixedly installed inside the end away from the first cylindrical shell 21;

[0045] The middle parts of the two opposite side walls of the second cylindrical shell 22 are fixedly connected with a second mounting groove 221, and the bottom of the second cylindrical shell 22 is fixedly connected with a drainage channel 222;

[0046] The middle parts of the two opposite side walls of the third cylindrical shell 23 are fixedly connected with mounting grooves 3 231 , and the top of the third cylindrical shell 23 is fixedly connected with an air inlet pipe 232 .

[0047] The top inner wall and the bottom inner wall of the special-shaped cavity 3 are both arc-shaped, the radius of the top arc-shaped inner wall of the special-shaped cavity 3 is smaller than the radius of the bottom arc-shaped inner wall, the inner walls on both sides of the opposite sides of the special-shaped cavity 3 are fixedly connected with mounting grooves 301, the centers of the trajectories of the top inner wall and the bottom inner wall of the special-shaped cavity 3 are both on the central axis of the mounting grooves 301, the bottom of the special-shaped cavity 3 is fixedly connected with a sewage pipe 302, the bottom of the sewage pipe 302 is matched with a detachable sealing plate 303, and the end of the connecting pipe 212 away from the first cylindrical shell 21 is connected to the sewage pipe 302;

[0048] When the water flow drives the driving impeller 5 to rotate, the water inside the sewage pipe 302 is pumped into the first cylindrical shell 21 through the connecting pipe 212, so that the water flow can circulate between the water inlet pipe 2, the sewage pipe 302, the connecting pipe 212 and the first cylindrical shell 21.

[0049] A cylindrical shaft 41 is fixedly connected to the middle of the filter plate 4, and the cylindrical shaft 41 is rotatably installed inside a pair of mounting grooves 301. The top of the filter plate 4 slides along the top inner wall of the special-shaped cavity 3, and the bottom of the filter plate 4 slides along the bottom inner wall of the special-shaped cavity 3. A curved baffle 42 is fixedly connected to the side of the bottom of the filter plate 4 close to the second cylindrical shell 22. The side wall of the curved baffle 42 is always in contact with the bottom inner wall of the special-shaped cavity 3, and a sieve hole 43 is opened inside the curved baffle 42.

[0050] When the water pump 1 stops working, the water inside the water inlet pipe 2 is in a static state, and the filter plate 4 can rotate freely due to its heavy bottom, so that the arc baffle 42 closes the entrance of the sewage pipe 302 to prevent floating objects in the sewage pipe 302 from entering the water inlet pipe 2.

[0051] A central shaft 51 is fixedly connected to the central axis of the driving impeller 5 , and the central shaft 51 is rotatably mounted inside a pair of mounting grooves 211 . Grooves 52 are provided on both sides of a plurality of blades of the driving impeller 5 .

[0052] Example 2

[0053] See also Figure 6 - Figure 7 As shown, a center shaft 2 61 is fixedly connected to the central axis of the driving impeller 2 6, an eccentric shaft 62 is fixedly connected between the two center shafts 2 61, a groove 2 63 is provided on the side wall of a plurality of blades of the driving impeller 2 6, and the ends of the two center shafts 2 61 that are away from each other are rotatably installed in a pair of installation grooves 3 231 together, a transmission groove 1 64 is provided between the two groups of driving impellers 2 6, the eccentric shaft 62 is slidably arranged in the transmission groove 1 64, a connecting rod 641 is fixedly connected to the top of the transmission groove 1 64, a movable plug 65 is fixedly connected to the top of the connecting rod 641, and the movable plug 65 is slidably arranged in the intake pipe 232, A circular plate 66 is arranged above the movable plug 65, and the circular plate 66 is fixedly installed inside the air inlet pipe 232. An air hole 661 is provided inside the movable plug 65 and the circular plate 66. A push rod 662 is fixedly connected to the bottom of the circular plate 66. A cylindrical cavity 67 is provided inside the movable plug 65. A deep hole 671 is provided on the inner wall of the bottom of the cylindrical cavity 67. A spring 672 is arranged inside the deep hole 671. A plunger 68 is slidably arranged inside the spring 672. A mounting plate 681 is fixedly connected to the top of the plunger 68. A gap is left between the side wall of the mounting plate 681 and the inner wall of the cylindrical cavity 67. A sealing ring 69 is fixedly installed on the top of the plunger 68.

[0054] Through the setting of the air intake component, when the water flow drives the driving impeller 2 6 to rotate, a part of the air will be drawn into the water inlet pipe 2 to form bubbles. In this way, when the bubbles enter the special-shaped cavity 3 later, the water flow inside the special-shaped cavity 3 will be relatively reduced, and the pressure of the water flow on the top of the filter plate 4 will be reduced. When the bubbles pass through the filter plate 4, the pressure will increase again, and then the filter plate 4 can be continuously swung, making it easier for debris that may be attached to the filter plate 4 to fall off, thereby avoiding the possibility of blockage of the filter plate 4.

[0055] Example 3

[0056] See also Figure 8 - Fig. 9 As shown, a center shaft three 71 is fixedly connected to the central axis of the driving impeller three 7, and the center shaft three 71 is rotatably installed inside a pair of mounting grooves two 221. A groove three 72 is provided on the side wall of one side of several blades of the driving impeller three 7. Both ends of the center shaft three 71 are fixedly connected to a flywheel 73, and an eccentric rod 731 is fixedly connected to the side wall of the flywheel 73.

[0057] The transverse tube 241 is connected to the ventilation pipe 8, and a one-way valve 801 is fixedly installed on the side wall of the ventilation pipe 8. The first piston 81 and the second piston 82 are movably arranged inside the ventilation pipe 8. The first piston 81 is located below the connection between the transverse tube 241 and the ventilation pipe 8, and the second piston 82 is located above the connection between the transverse tube 241 and the ventilation pipe 8. The one-way valve 801 is located at the bottom of the first piston 81. The bottom of the first piston 81 is fixedly connected to a vertical rod 811, and the other end of the vertical rod 811 is fixedly connected to a transmission groove 2 812, and the eccentric rod 731 is slidably arranged inside the transmission groove 2 812.

[0058] The bottom of the second piston 82 is fixedly connected to a connecting rod 1 821, and the bottom of the connecting rod 1 821 is fixedly connected to a clamping plate 822. The top of the first piston 81 is fixedly connected to a connecting rod 2 83, and the top of the connecting rod 2 83 is provided with an opening 831, and the inside of the connecting rod 2 83 is provided with a cylindrical hole 832. The connecting rod 1 821 is slidably disposed inside the opening 831, and the clamping plate 822 is slidably disposed inside the cylindrical hole 832.

[0059] By setting the ventilation mechanism, bubbles in the water flow can be removed while the water inlet pipe 2 is sealed, thereby preventing gas from entering the water pump 1 and causing the water pump 1 to gasp, thereby affecting the service life of the water pump 1.

[0060] When in use, the output shaft of the fire truck engine is connected to the gear box 11 through the universal joint head 111 to provide power for the water pump 1;

[0061] Use an external water pipe to connect the water source to the water inlet pipe 2, and the water pump 1 works to pump water out of the water source for fire fighting. During the pumping process, the water flow will impact the filter plate 4. Due to the setting of the filter plate 4, the bottom of the filter plate 4 is longer and the top is shorter. The pressure caused by the water flow on the two ends of the filter plate 4 is different, and the filter plate 4 rotates, and the arc baffle 42 moves away from the top of the sewage pipe 302, and the filter plate 4 is in an inclined state;

[0062] When pumping water, the water flow will drive the driving impeller 1 5, the driving impeller 2 6 and the driving impeller 3 7 to rotate synchronously. Since grooves 1 52 are provided on both sides of the blades of the driving impeller 1 5, when the driving impeller 1 5 rotates, the water inside the sewage pipe 302 can be pumped into the first cylindrical shell 21 through the connecting pipe 212, so that the water flow can circulate between the water inlet pipe 2, the sewage pipe 302, the connecting pipe 212 and the first cylindrical shell 21;

[0063] When the impurities in the water contact the filter plate 4, the impurities can be flushed into the sewage pipe 302 by the impact of the circulating water flow, which is convenient for opening the sealing plate 303 and discharging the impurities, thereby preventing the impurities from entering the water pump 1 and contacting the water pump impeller 15, which may cause the driving impeller 15 to wear;

[0064] Through the setting of the air intake assembly, the water flow drives the driving impeller 2 6 to rotate, while the eccentric shaft 62 rotates synchronously to push the movable plug 65 to slide up and down inside the air intake pipe 232 through the transmission groove 1 64;

[0065] When the movable plug 65 moves upward, the circular plate 66 will eventually be inserted into the movable plug 65, squeezing the mounting plate 681, and the insertion rod 68 slides into the deep hole 671, the spring 672 is compressed, and the sealing ring 69 is separated from the top inner wall of the cylindrical cavity 67. At this time, when the water pump 1 pumps water, part of the air will be pumped into the water inlet pipe 2 through the air hole 661, forming bubbles;

[0066] In this way, when the air bubble enters the special-shaped cavity 3, the water flow inside the special-shaped cavity 3 will be relatively reduced, and the pressure of the water flow on the top of the filter plate 4 will be reduced. When the air bubble passes through the filter plate 4, the pressure will increase, and the filter plate 4 can be continuously swung, making it easier for the debris that may be attached to the filter plate 4 to fall off, thereby avoiding the possibility of clogging of the filter plate 4.

[0067] Through the setting of the ventilation mechanism, the water flow will drive the driving impeller 3 7 to rotate, and through the setting of the eccentric rod 731, the first piston 81 can be driven to move up and down through the vertical rod 811;

[0068] When the first piston 81 moves downward, the friction between the second piston 82 and the inner wall of the ventilation pipe 8 is relatively large, the second piston 82 is in a stationary state, the space between the exhaust pipe 24, the cross pipe 241, the first piston 81 and the second piston 82 becomes larger, the pressure decreases, and part of the water flow will enter the exhaust pipe 24.

[0069] Then the clamping plate 822 moves to the top of the cylindrical hole 832, and then pulls the second piston 82 to move synchronously until the second piston 82 closes the connection between the transverse pipe 241 and the ventilation pipe 8. At this time, the one-way valve 801 is located between the first piston 81 and the second piston 82.

[0070] At this time, if there are bubbles passing through the bottom of the rotating shaft 14, they will enter the exhaust pipe 24 and exchange with the water flow;

[0071] Then the first piston 81 moves upward, and the first piston 81 approaches the second piston 82, and the air between the first piston 81 and the second piston 82 is discharged through the one-way valve 801;

[0072] Afterwards, the first piston 81 and the second piston 82 move upward and return to their original positions, and the exhaust pipe 24 and the cross pipe 241 are connected to the cavity between the first piston 81 and the second piston 82, so that part of the air can be discharged when the piston moves downward again.

[0073] This can remove the air in the water flow, preventing the gas from entering the water pump 1 and causing the water pump 1 to gasp.

[0074] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A fire water pump with an anti-clogging structure, comprising a water pump (1) and a water inlet pipe (2), wherein a gear box (11) is arranged on one side of the water pump (1), a universal joint head (111) is fixedly mounted on the input shaft of the gear box (11) away from the water pump (1), a water inlet (12) is fixedly connected to the side of the water pump (1) away from the gear box (11), a drain outlet (13) is fixedly connected to the side wall of the water pump (1), a rotating shaft (14) is rotatably mounted on the central axis of the water pump (1), one end of the rotating shaft (14) is fixedly connected to the output end of the gear box (11), a water pump impeller (15) is arranged inside the water pump (1), the water pump impeller (15) is fixedly mounted on the rotating shaft (14), one end of the water inlet pipe (2) is fixedly mounted on the water inlet (12), and the water pump (1) is characterized in that: Also includes: The middle of the water inlet pipe (2) is fixedly connected to a special-shaped cavity (3), the bottom of the water inlet pipe (2) is fixedly connected to a first cylindrical shell (21) and a second cylindrical shell (22), the top of the water inlet pipe (2) is fixedly connected to a third cylindrical shell (23) and an exhaust pipe (24), the first cylindrical shell (21) and the third cylindrical shell (23) are located on a side of the special-shaped cavity (3) away from the water pump (1), the second cylindrical shell (22) and the exhaust pipe (24) are located on a side of the special-shaped cavity (3) close to the water pump (1), and the top of the exhaust pipe (24) is fixedly connected to a transverse pipe (241); The middle parts of the two opposite side walls of the first cylindrical shell (21) are both fixedly connected with a mounting groove 1 (211), the bottom of the first cylindrical shell (21) is fixedly connected with a connecting pipe (212), and a filter screen (213) is fixedly installed inside one end of the connecting pipe (212) away from the first cylindrical shell (21); The middle parts of the two opposite side walls of the second cylindrical shell (22) are both fixedly connected with a second mounting groove (221), and the bottom of the second cylindrical shell (22) is fixedly connected with a drainage channel (222); The middle parts of the two opposite side walls of the third cylindrical shell (23) are both fixedly connected with mounting grooves three (231), and the top of the third cylindrical shell (23) is fixedly connected with an air intake pipe (232); The top inner wall and the bottom inner wall of the special-shaped cavity (3) are both arc-shaped, the radius of the top arc-shaped inner wall of the special-shaped cavity (3) is smaller than the radius of the bottom arc-shaped inner wall, the inner walls on both sides of the opposite sides of the special-shaped cavity (3) are fixedly connected with mounting grooves four (301), the centers of the trajectories of the top inner wall and the bottom inner wall of the special-shaped cavity (3) are both located on the central axis of the mounting groove four (301), the bottom of the special-shaped cavity (3) is fixedly connected with a sewage pipe (302), the bottom of the sewage pipe (302) is matched with a detachable sealing plate (303), and the end of the connecting pipe (212) away from the first cylindrical shell (21) is connected to the sewage pipe (302); An anti-blocking mechanism, the anti-blocking mechanism comprising a filter plate (4) and a driving impeller (5), the filter plate (4) being arranged inside the special-shaped cavity (3), and the driving impeller (5) being arranged inside the first cylindrical shell (21); A cylindrical shaft (41) is fixedly connected to the middle of the filter plate (4), and the cylindrical shaft (41) is rotatably mounted inside a pair of mounting grooves (301). The top of the filter plate (4) slides along the top inner wall of the special-shaped cavity (3), and the bottom of the filter plate (4) slides along the bottom inner wall of the special-shaped cavity (3). A curved baffle (42) is fixedly connected to the bottom of the filter plate (4) on one side close to the second cylindrical shell (22). The side wall of the curved baffle (42) is always in contact with the bottom inner wall of the special-shaped cavity (3), and a sieve hole (43) is provided inside the curved baffle (42). An air intake assembly, the air intake assembly comprising two sets of driving impellers 2 (6), the two sets of driving impellers 2 (6) being symmetrically arranged inside the third cylindrical shell (23); The central axis of the second driving impeller (6) is fixedly connected to a central axis (61), and an eccentric shaft (62) is fixedly connected between the two central axes (61). A groove (63) is provided on the side wall of a plurality of blades of the second driving impeller (6). The ends of the two central axes (61) that are away from each other are rotatably mounted inside a pair of mounting grooves (231). A transmission groove (64) is provided between the two sets of the second driving impellers (6), and the eccentric shaft (62) slides The movable plug (65) is arranged inside the transmission groove (64), the top of the transmission groove (64) is fixedly connected to a connecting rod (641), the top of the connecting rod (641) is fixedly connected to a movable plug (65), the movable plug (65) is slidably arranged inside the air intake pipe (232), a circular plate (66) is arranged above the movable plug (65), the circular plate (66) is fixedly installed inside the air intake pipe (232), and an air hole (661) is provided inside the movable plug (65) and the circular plate (66). A push rod (662) is fixedly connected to the bottom of the circular plate (66), a cylindrical cavity (67) is provided inside the movable plug (65), a deep hole (671) is provided on the inner wall of the bottom of the cylindrical cavity (67), a spring (672) is provided inside the deep hole (671), an insertion rod (68) is slidably provided inside the spring (672), a mounting plate (681) is fixedly connected to the top of the insertion rod (68), and the side wall of the mounting plate (681) is rotatably connected to the inner wall of the cylindrical cavity (67). A gap is left between the walls, and a sealing ring (69) is fixedly installed on the top of the plug rod (68). When the water flow drives the second impeller (6) to rotate, a part of the air is sucked into the water inlet pipe (2) to form bubbles. In this way, when the bubbles enter the special-shaped cavity (3), the water flow inside the special-shaped cavity (3) will be relatively reduced, and the pressure of the water flow on the top of the filter plate (4) will be reduced. When the bubbles pass through the filter plate (4), the pressure will increase, thereby causing the filter plate (4) to swing continuously. A ventilation mechanism, the ventilation mechanism comprising a driving impeller three (7) and two ventilation pipes (8), the driving impeller three (7) being arranged inside the second cylindrical shell (22), and the two ventilation pipes (8) being respectively fixedly mounted on one end of the transverse pipe (241); A central shaft (71) is fixedly connected to the central axis of the driving impeller (7), and the central shaft (71) is rotatably mounted inside a pair of mounting grooves (221). A groove (72) is provided on a side wall of a plurality of blades of the driving impeller (7). Both ends of the central shaft (71) are fixedly connected to a flywheel (73), and an eccentric rod (731) is fixedly connected to the side wall of the flywheel (73); The transverse tube (241) is in communication with the ventilation tube (8); a one-way valve (801) is fixedly mounted on the side wall of the ventilation tube (8); a first piston (81) and a second piston (82) are interactively arranged inside the ventilation tube (8); the first piston (81) is located below the connection portion between the transverse tube (241) and the ventilation tube (8); the second piston (82) is located above the connection portion between the transverse tube (241) and the ventilation tube (8); the one-way valve (801) is located at the bottom of the first piston (81); a vertical rod (811) is fixedly connected to the bottom of the first piston (81); the other end of the vertical rod (811) is fixedly connected to a second transmission groove (812); the eccentric rod (731) is slidably arranged inside the second transmission groove (812); the water flow drives the third impeller (7) to rotate; and through the arrangement of the eccentric rod (731), the first piston (81) can be driven to move up and down through the vertical rod (811); When the first piston (81) moves downward, the friction between the second piston (82) and the inner wall of the ventilation pipe (8) is relatively large, the second piston (82) is in a stationary state, the space between the exhaust pipe (24), the transverse pipe (241), the first piston (81) and the second piston (82) becomes larger, the pressure decreases, and a part of the water flow will enter the exhaust pipe (24). If there are bubbles passing through the bottom of the rotating shaft (14), they will enter the exhaust pipe (24) and exchange with the water flow; Then, the first piston (81) moves upward and approaches the second piston (82), and the air between the first piston (81) and the second piston (82) is discharged through the one-way valve (801), thereby removing the air in the water flow and preventing the gas from entering the water pump (1) and causing the water pump (1) to gasp.

2. A fire water pump with an anti-clogging structure according to claim 1, characterized in that: A central shaft (51) is fixedly connected to the central axis of the driving impeller (5), and the central shaft (51) is rotatably mounted inside a pair of mounting grooves (211). Grooves (52) are provided on both sides of a plurality of blades of the driving impeller (5).

3. A fire water pump with an anti-clogging structure according to claim 1, characterized in that: The bottom of the second piston (82) is fixedly connected to a connecting rod 1 (821), the bottom of the connecting rod 1 (821) is fixedly connected to a clamping plate (822), the top of the first piston (81) is fixedly connected to a connecting rod 2 (83), the top of the connecting rod 2 (83) is provided with an opening (831), the interior of the connecting rod 2 (83) is provided with a cylindrical hole (832), the connecting rod 1 (821) is slidably disposed inside the opening (831), and the clamping plate (822) is slidably disposed inside the cylindrical hole (832).

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