Electric emergency fire pump and method of use

Abstract

The application relates to the technical field of fire-fighting facilities, and discloses an electric emergency fire pump and a use method thereof, which comprises a motor, a water suction bin fixed to the front end surface of the motor, a water inlet pipe fixed to the front end surface of the water suction bin, a water outlet pipe fixed to the top of the water suction bin, and a water pressure adjusting bin fixed to the water outlet pipe. The cover can be disassembled, the height of the adjusting plug is lowered by controlling the adjusting plug to ascend and descend through the manual part during adjustment, the adjusting plug is matched with the inner side conical concave surface of the inner recess, water flow interception cannot pass through the gap between the adjusting plug and the inner side conical concave surface of the inner recess, the elastic plug is pressed by the pressing part under the extrusion of the inner side conical concave surface of the inner recess, the elastic plug is opened, water flow can backwash the inner wall of the water pressure adjusting bin and the filter part, and the water outlet pressure is not balanced and the water scale is prone to cause blockage in the prior art.

Description

Technical Field

[0001] This invention relates to the field of fire protection facilities technology, specifically to an electric emergency fire pump and its usage method. Background Technology

[0002] Fire pumps refer to dedicated fire pumps or ordinary clean water pumps that meet national standards. Most fire water sources require fire pumps to pressurize the water supply to meet the pressure and volume requirements during firefighting. Depending on the location of the fire, different water pressures are needed from the fire pumps to meet the needs of firefighting. However, existing fire pumps are inconvenient to adjust water pressure, affecting firefighting efficiency and making them relatively inconvenient to use.

[0003] A search revealed an electric emergency rotary variable pressure fire pump, disclosed in announcement number CN208900374U. The pump includes a base plate, with a motor located on the upper surface of the base plate near the left side. The output shaft of the motor is connected to a transmission rod. A suction chamber is located on the upper surface of the base plate near the right side. The transmission rod is rotatably connected to the suction chamber. Fire pump blades are evenly distributed on the side of the transmission rod. An inlet pipe is connected to the right side of the suction chamber, and an outlet pipe is connected to the upper surface of the suction chamber. This electric emergency rotary variable pressure fire pump allows for easy adjustment of the outlet size of the pressure regulating chamber by incorporating a servo motor and a pressure regulating plate, thereby changing the water pressure at the outlet pipe.

[0004] However, the above-mentioned electric emergency fire pump still has the following problems: 1. The above-mentioned electric emergency fire pump uses a servo motor to drive the water pressure regulating plate to rotate and tilt to a certain angle to adjust the size of the water outlet of the water pressure regulating chamber, thereby changing the water pressure at the outlet pipe. Since the regulating plate is tilted, the water pressure on the regulating plate is uneven, resulting in an uneven water pressure. In addition, the output shaft of the servo motor is under load due to the water pressure, which has a certain impact on it; 2. Since emergency fire fighting is usually a sudden situation, the fire hydrants at the scene may be old, and the pipeline may have a lot of scale due to corrosion. The reduction of the water outlet of the water pressure regulating chamber makes the scale easily cause blockage of the fire nozzle, affecting the water flow. Summary of the Invention

[0005] This invention proposes an electric emergency fire pump and its usage method, which solves the problems of uneven water pressure and easy blockage caused by scale in the prior art.

[0006] The technical solution of the present invention is as follows: an electric emergency fire pump, comprising a motor, a suction chamber fixed to the front end face of the motor, an inlet pipe fixed to the front end face of the suction chamber, an outlet pipe fixed to the top of the suction chamber, and a water pressure regulating chamber fixed to the outlet pipe. The water pressure regulating chamber comprises an upper conical section and a lower cylindrical section. The bottom of the cylindrical section is provided with an inwardly recessed part. The inner side of the recessed part forms a conical concave surface. The outer side of the recessed part forms a scale collection area for collecting dirt. The bottom of the water pressure regulating chamber is equipped with a cover for sealing the scale collection area.

[0007] An adjusting plug adapted to the conical concave surface is provided inside the cylindrical section. A filter element is fixed inside the conical section. The adjusting plug can slide up and down relative to the filter element. A manual component is provided at the top of the water outlet pipe for controlling the raising and lowering of the adjusting plug to adjust the water pressure. An elastic plug and a pressing component are provided at the bottom of the adjusting plug. After the adjusting plug descends to fit against the conical concave surface inside the concave part, the elastic plug automatically opens under the pressure of the pressing component to achieve backwashing of the inner wall of the water pressure regulating chamber and the filter element.

[0008] Preferably, the adjusting plug includes a conical plug and a threaded sleeve fixed to the top of the conical plug. The conical plug includes an upper cylindrical section and a lower conical section. The bottom of the conical section of the conical plug has a conical bottom opening and movable grooves distributed in an annular pattern around the conical bottom opening. The top of the conical bottom opening has a spring chamber. The cylindrical section of the conical plug has a first cavity communicating with the spring chamber. The cylindrical section of the conical plug has cross-shaped protrusions on its outer side.

[0009] Preferably, the threaded sleeve has a second cavity communicating with the first cavity and a plurality of spray holes communicating with the second cavity, the spray holes being located above the filter element.

[0010] Preferably, the filter element includes an inner ring, a filter screen, and an outer ring that are concentrically fixed from the inside to the outside. The filter screen is fixed to the inner wall of the water pressure regulating chamber, and a limiting groove that slides with the protrusion is provided on the inner side of the inner ring.

[0011] Preferably, the manual component includes a turntable, the bottom of which is fixed with a threaded rod, which is rotatably connected to the water outlet pipe, and the end of the threaded rod extends into the water pressure regulating chamber and is threadedly connected to the threaded sleeve.

[0012] Preferably, the elastic plug includes a plug disc and a return spring. The top end of the return spring is fixed to the inner wall of the spring chamber, and the end of the return spring is fixed to the plug disc. Under the elastic force of the return spring, the plug disc tends to shrink towards the conical bottom opening.

[0013] Preferably, the pressing element includes a pressing rod and a rotating shaft, and the pressing rod is rotatably disposed in the movable groove via the rotating shaft.

[0014] Preferably, the pressure rod is in the shape of an inverted V, with one end extending outside the movable groove and the other end extending into the conical bottom opening and abutting against the upper surface of the stopper plate.

[0015] A method for using an electric emergency fire pump includes regulating the fire outlet water pressure and backwashing inside the water pressure regulating chamber.

[0016] The specific process for adjusting the fire water pressure is as follows: by manually rotating the turntable, the threaded rod is driven to rotate. Under the action of the threaded rod and the threaded sleeve, as well as the sliding limit of the protrusion and the limiting groove, the conical plug moves up and down in the cylindrical section, thereby changing the distance between the conical plug and the inner concave surface of the concave part, so as to adjust the flow rate of the water outlet pipe, and thus adjust the fire water pressure.

[0017] The backwashing process inside the water pressure regulating chamber is as follows: First, the cover at the bottom of the water pressure regulating chamber is removed. Then, the turntable is manually rotated, which drives the threaded rod to rotate. Under the action of the threaded rod and the threaded sleeve, as well as the sliding limit of the protrusion and the limiting groove, the conical plug moves downward in the cylindrical section until the conical plug fits against the conical concave surface on the inner side of the concave part. During this process, the outer end of the pressure rod is subjected to the reaction force of the concave surface and contracts and rotates towards the movable groove. Then, the inner end of the pressure rod squeezes the plug disc, causing the plug disc to overcome the elastic force of the return spring and move downward and separate from the conical bottom opening. This allows the water flow to enter the spring chamber through the conical bottom opening, then enter the second chamber through the first cavity, and then spray out through the spray hole to backwash the inner wall of the water pressure regulating chamber and the filter from top to bottom.

[0018] The beneficial effects of this invention are as follows:

[0019] 1. The present invention uses a manual control to adjust the height of the adjusting plug, thereby changing the distance between the adjusting plug and the inner conical concave surface of the concave part, so as to adjust the flow of water in the outlet pipe and thus adjust the fire water pressure. Compared with the prior art, this adjustment method ensures that the water pressure on the adjusting plug is more balanced in all directions, thereby achieving a stable fire water pressure after adjustment.

[0020] 2. This invention allows for adjustment by disassembling the cover and manually controlling the raising and lowering of the adjusting plug during adjustment. This lowers the height of the adjusting plug, causing it to fit against the inner concave surface of the concave portion. This prevents water flow from passing through the gap between the adjusting plug and the inner concave surface. Meanwhile, the pressing component, under the pressure of the inner concave surface, presses down on the elastic plug, causing it to open. This allows water flow to backwash the inner wall of the water pressure regulating chamber and the filter. Compared to existing technologies, this invention solves the problems of uneven water pressure and easy blockage caused by scale in existing technologies.

[0021] 3. In this invention, the stopper disc tends to shrink towards the conical bottom opening under the elastic force of the return spring. In the non-rinsing state, the stopper disc is pressed into the conical bottom opening by the pressure of the water flow, thereby closing the conical bottom opening and preventing the water flow from passing through. That is, the water flow can only pass through the gap between the adjusting plug and the inner concave surface of the concave part, and is filtered by the filter element. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a three-dimensional structural diagram of an electric emergency fire pump proposed in this invention;

[0024] Figure 2 This is a three-dimensional cross-sectional structural diagram of the water pressure regulating chamber proposed in this invention;

[0025] Figure 3 This is a front view schematic diagram of the water pressure regulating chamber proposed in this invention;

[0026] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjusting plug proposed in this invention;

[0028] Figure 6 This is a three-dimensional structural diagram of the adjusting plug proposed in this invention from another perspective;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the filter element proposed in this invention;

[0030] In the diagram: 1. Motor; 2. Suction chamber; 3. Inlet pipe; 4. Outlet pipe; 5. Water pressure regulating chamber; 51. Conical section; 52. Cylindrical section; 53. Concave part; 54. Scale collection area; 6. Adjusting plug; 61. Conical plug; 611. Conical bottom opening; 612. Movable groove; 613. Spring chamber; 614. First cavity; 615. Protrusion; 62. Threaded sleeve; 621. Second cavity; 622. Spray hole; 7. Manual component; 71. Turntable; 72. Threaded rod; 8. Filter element; 81. Inner ring; 811. Limiting groove; 82. Outer ring; 83. Filter screen; 9. Pressing component; 91. Pressing rod; 92. Rotating shaft; 10. Elastic plug; 101. Plug disc; 102. Return spring; 11. Cover. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1 , Figure 2 and Figure 3 This invention provides a technical solution: an electric emergency fire pump, comprising a motor 1, a suction chamber 2 fixed to the front end of the motor 1, an inlet pipe 3 fixed to the front end of the suction chamber 2, an outlet pipe 4 fixed to the top of the suction chamber 2, and a water pressure regulating chamber 5 fixed to the outlet pipe 4. The water pressure regulating chamber 5 includes an upper conical section 51 and a lower cylindrical section 52. The bottom of the cylindrical section 52 is provided with an inwardly recessed portion 53. The inner side of the recessed portion 53 forms a conical concave surface, and the outer side of the recessed portion 53 forms a scale collection area 54 for collecting dirt. The water pressure regulating chamber 5... A cover 11 for sealing the scale collection area 54 is installed at the bottom. An adjusting plug 6 adapted to the conical concave surface is provided inside the cylindrical section 52. A filter element 8 is fixed inside the conical section 51. The adjusting plug 6 can slide up and down relative to the filter element 8. A manual component 7 for controlling the raising and lowering of the adjusting plug 6 to adjust the water pressure is provided at the top of the water outlet pipe 4. An elastic plug 10 and a pressing component 9 distributed in a ring around the elastic plug 10 are provided at the bottom of the adjusting plug 6. After the adjusting plug 6 descends to fit against the conical concave surface inside the concave part 53, the elastic plug 10 automatically opens under the pressure of the pressing component 9. To achieve backwashing of the inner wall of the water pressure regulating chamber 5 and the filter element 8, the electric emergency fire pump proposed in this invention has two functions. The first function is to regulate the water pressure of the outlet pipe 4. During regulation, the regulating plug 6 is raised and lowered by the manual component 7, thereby changing the distance between the regulating plug 6 and the inner concave surface of the concave part 53, so as to regulate the flow rate of the outlet pipe 4, and thus regulate the fire water pressure. Compared with the prior art, this regulation method ensures that the regulating plug 6 is subjected to more balanced water pressure in all directions, thereby achieving stable fire water pressure after regulation. The second function is to achieve backwashing of the inner wall of the water pressure regulating chamber 5 and the filter element 8. To achieve backwashing of the inner wall of the water pressure regulating chamber 5 and the filter element 8, the cover 11 is removed during adjustment. During adjustment, the adjusting plug 6 is raised and lowered by the manual component 7, thereby reducing the height of the adjusting plug 6 so that it fits against the conical concave surface inside the concave part 53. This prevents water flow from passing through the gap between the adjusting plug 6 and the concave surface inside the concave part 53. Meanwhile, the pressing component 9 is pressed by the concave surface inside the concave part 53, causing the elastic plug 10 to open and allowing water flow to backwash the inner wall of the water pressure regulating chamber 5 and the filter element 8.

[0033] Please see Figure 3 , Figure 5 and Figure 6 The adjusting plug 6 includes a conical plug 61 and a threaded sleeve 62 fixed to the top of the conical plug 61. The conical plug 61 includes an upper cylindrical section and a lower conical section. The bottom of the conical section of the conical plug 61 has a conical bottom opening 611 and a movable groove 612 distributed in an annular pattern around the conical bottom opening 611. The top of the conical bottom opening 611 has a spring chamber 613. The cylindrical section of the conical plug 61 has a first cavity 614 communicating with the spring chamber 613. The cylindrical section of the conical plug 61 has a ten-element... The raised section 615 is arranged in a letter pattern. The threaded sleeve 62 has a second cavity 621 that communicates with the first cavity 614 and several spray holes 622 that communicate with the second cavity 621. The spray holes 622 are located above the filter element 8. When the conical bottom opening 611 is open, the water flow can enter the spring chamber 613 through the conical bottom opening 611, then enter the second cavity 621 through the first cavity 614, and then be sprayed out through the spray holes 622 to backwash the inner wall of the water pressure regulating chamber 5 and the filter element 8 from top to bottom.

[0034] Please see Figure 7 The filter element 8 includes an inner ring 81, a filter screen 83, and an outer ring 82, which are concentrically fixed from the inside to the outside. The filter screen 83 is fixed on the inner wall of the water pressure regulating chamber 5. The inner ring 81 has a limiting groove 811 that slides with the protrusion 615 on its inner ring surface, which is used to limit the sliding of the regulating plug 6. When the regulating plug 6 and the inner concave surface of the concave part 53 maintain a certain gap, the water flow can pass through the gap, thereby delivering water for fire extinguishing. The filter screen 83 can intercept dirt in the water flow to avoid pipe blockage.

[0035] Please see Figure 2 and Figure 3 The manual component 7 includes a turntable 71, with a threaded rod 72 fixed to the bottom of the turntable 71. The threaded rod 72 is rotatably connected to the water outlet pipe 4. The end of the threaded rod 72 extends into the water pressure regulating chamber 5 and is threadedly connected to the threaded sleeve 62. By manually rotating the turntable 71, the threaded rod 72 is driven to rotate. Under the threaded action of the threaded rod 72 and the threaded sleeve 62, as well as the sliding limit of the protrusion 615 and the limiting groove 811, the conical plug 61 moves up and down within the cylindrical section 52.

[0036] Please see Figure 3 , Figure 4 and Figure 6The elastic plug 10 includes a plug disc 101 and a return spring 102. The top end of the return spring 102 is fixed to the inner wall of the spring chamber 613, and the end of the return spring 102 is fixed to the plug disc 101. Under the elastic force of the return spring 102, the plug disc 101 tends to contract towards the conical bottom opening 611. The pressing member 9 includes a pressing rod 91 and a rotating shaft 92. The pressing rod 91 is rotatably disposed in the movable groove 612 via the rotating shaft 92. The pressing rod 91 is in an inverted V-shape. One end of the pressing rod 91 extends outside the movable groove 612, and the other end of the pressing rod 91 extends into the conical bottom opening 611 and abuts against the upper surface of the plug disc 101. The conical plug 61 moves downward within the cylindrical section 52. The pressure rod 91 moves until the conical plug 61 fits against the conical concave surface inside the concave part 53. During this process, the outer end of the pressure rod 91 is subjected to the reaction force of the concave surface and retracts and rotates towards the movable groove 612. Then, the inner end of the pressure rod 91 squeezes the plug plate 101, causing the plug plate 101 to overcome the elastic force of the return spring 102 and move downward and separate from the conical bottom opening 611. In other states, the plug plate 101 is pressed into the conical bottom opening 611 by the pressure of the water flow, thereby closing the conical bottom opening 611 and preventing the water flow from passing through. That is, the water flow can only pass through the gap between the adjusting plug 6 and the concave surface inside the concave part 53 and is filtered by the filter element 8.

[0037] In conjunction with the above structure, the present invention also proposes a method for using an electric emergency fire pump, which includes fire water outlet pressure regulation and backwashing in the water pressure regulating chamber 5.

[0038] The specific process for adjusting the fire water pressure is as follows: By manually rotating the turntable 71, the threaded rod 72 is driven to rotate. Under the thread action of the threaded rod 72 and the threaded sleeve 62, and the sliding limit of the protrusion 615 and the limiting groove 811, the conical plug 61 moves up and down in the cylindrical section 52, thereby changing the distance between the conical plug 61 and the inner concave surface of the concave part 53, so as to adjust the flow rate of the water outlet pipe 4, and thus adjust the fire water pressure.

[0039] The backwashing process inside the water pressure regulating chamber 5 is as follows: First, remove the cover 11 at the bottom of the water pressure regulating chamber 5. Then, manually rotate the turntable 71 to drive the threaded rod 72 to rotate. Under the thread action of the threaded rod 72 and the threaded sleeve 62, and the sliding limit of the protrusion 615 and the limiting groove 811, the conical plug 61 moves downward in the cylindrical section 52 until the conical plug 61 fits against the conical concave surface inside the concave part 53. During this process, one end of the pressure rod 91 is subjected to conical pressure. The concave surface reacts and contracts towards the movable groove 612, causing the inner end of the pressure rod 91 to press the stopper disc 101. This causes the stopper disc 101 to overcome the elastic force of the return spring 102 and move downwards, disengaging from the conical bottom opening 611. This allows water to flow through the conical bottom opening 611 into the spring chamber 613, then through the first cavity 614 into the second cavity 621, and finally out through the spray hole 622, backwashing the inner wall of the water pressure regulating chamber 5 and the filter element 8 from top to bottom.

[0040] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electric emergency fire pump, comprising a motor (1), a suction chamber (2) fixed to the front end face of the motor (1), an inlet pipe (3) fixed to the front end face of the suction chamber (2), an outlet pipe (4) fixed to the top of the suction chamber (2), and a water pressure regulating chamber (5) fixed to the outlet pipe (4), characterized in that, The water pressure regulating chamber (5) includes an upper conical section (51) and a lower cylindrical section (52). The bottom of the cylindrical section (52) is provided with an inwardly recessed part (53). The inner side of the recessed part (53) forms a conical concave surface. The outer side of the recessed part (53) forms a scale collection area (54) for collecting dirt. The bottom of the water pressure regulating chamber (5) is equipped with a cover (11) for sealing the scale collection area (54). The cylindrical section (52) is provided with an adjusting plug (6) adapted to the conical concave surface. The adjusting plug (6) includes a conical plug (61) and a threaded sleeve (62) fixed to the top of the conical plug (61). The conical plug (61) includes an upper cylindrical section and a lower conical section. The bottom of the conical section of the conical plug (61) is provided with a conical bottom opening (611) and a movable groove (612) distributed in an annular pattern around the conical bottom opening (611). The top of the conical bottom opening (611) is... The part is provided with a spring chamber (613), and the cylindrical section of the conical plug (61) is provided with a first cavity (614) communicating with the spring chamber (613). The cylindrical section of the conical plug (61) is provided with cross-shaped protrusions (615). The threaded sleeve (62) is provided with a second cavity (621) communicating with the first cavity (614) and a number of spray holes (622) communicating with the second cavity (621). The spray holes (622) are located above the filter element (8). The conical section (51) is fixed with a filter element (8), and the adjusting plug (6) can slide up and down relative to the filter element (8). The filter element (8) includes an inner ring (81), a filter screen (83) and an outer ring (82) that are concentrically fixed from the inside to the outside. The filter screen (83) is fixed on the inner wall of the water pressure regulating chamber (5). The inner ring (81) has a limiting groove (811) that slides with the protrusion (615) on its inner ring surface. The top of the water outlet pipe (4) is provided with a manual component (7) for controlling the rise and fall of the regulating plug (6) to adjust the water pressure. The bottom of the regulating plug (6) is provided with an elastic plug (10) and a pressing component (9) distributed in a ring around the elastic plug (10). After the regulating plug (6) descends to fit against the conical concave surface inside the concave part (53), the elastic plug (10) automatically opens under the pressure of the pressing component (9) to achieve backwashing of the inner wall of the water pressure regulating chamber (5) and the filter (8). The elastic plug (10) includes a plug disc (101) and a return spring (102). The top of the return spring (102) is fixed to the inner wall of the spring chamber (613), and the end of the return spring (102) is fixed to the plug disc (101). Under the elastic force of the return spring (102), the plug disc (101) tends to contract towards the conical bottom opening (611). The pressing member (9) includes a pressing rod (91) and a rotating shaft (92). The pressing rod (91) is rotatably disposed in the movable groove (612) via the rotating shaft (92). The pressing rod (91) is in the shape of an inverted V. One end of the pressing rod (91) extends outside the movable groove (612), and the other end of the pressing rod (91) extends into the conical bottom opening (611) and abuts against the upper surface of the stopper plate (101).

2. The electric emergency fire pump according to claim 1, characterized in that, The manual component (7) includes a turntable (71), the bottom of which is fixed with a threaded rod (72), which is rotatably connected to the water outlet pipe (4), and the end of the threaded rod (72) extends into the water pressure regulating chamber (5) and is threadedly connected to the threaded sleeve (62).

3. A method of using an electric emergency fire pump, as described in claim 2, characterized in that, This includes backwashing inside the fire-fighting water pressure regulating and water pressure regulating chamber (5).

4. The method of using an electric emergency fire pump according to claim 3, characterized in that, The specific process of adjusting the fire water pressure is as follows: by manually rotating the turntable (71), the threaded rod (72) is driven to rotate. Under the thread action of the threaded rod (72) and the threaded sleeve (62) and the sliding limit of the protrusion (615) and the limiting groove (811), the conical plug (61) moves up and down in the cylindrical section (52), thereby changing the distance between the conical plug (61) and the conical concave surface inside the concave part (53) to adjust the flow rate of the water outlet pipe (4) and thus adjust the fire water pressure. The backwashing process inside the water pressure regulating chamber (5) is as follows: First, remove the cover (11) at the bottom of the water pressure regulating chamber (5), then manually rotate the turntable (71) to drive the threaded rod (72) to rotate. Under the thread action of the threaded rod (72) and the threaded sleeve (62) and the sliding limit of the protrusion (615) and the limiting groove (811), the conical plug (61) moves downward in the cylindrical section (52) until the conical plug (61) is in contact with the conical concave surface inside the concave part (53). During this process, one end of the pressure rod (91) is subjected to The conical concave surface reacts and rotates towards the movable groove (612), and then the inner end of the pressure rod (91) squeezes the plug disc (101), causing the plug disc (101) to overcome the elastic force of the return spring (102) and move downward and separate from the conical bottom opening (611), so that the water flow can enter the spring chamber (613) through the conical bottom opening (611), and then enter the second chamber (621) through the first cavity (614), and then be sprayed out through the spray hole (622) to backwash the inner wall of the water pressure regulating chamber (5) and the filter element (8) from top to bottom.

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