A subway water pump coupling device

Abstract

The present invention discloses a subway water pump coupling device, including a water pump body, one end of the surface of the water pump body is fixedly connected with a power mechanism, the surface of the water pump body and the side away from the power mechanism is fixedly connected with a water pump coupler, the end of the water pump coupler away from the water pump body is provided with a sewage device, the water pump coupler includes a fixed seat, the corresponding positions on the top of the fixed seat are fixedly connected with a connecting reinforcement plate, the top of the reinforcement plate is fixedly connected with a right-angle connecting pipe, the bottom end of the right-angle connecting pipe is connected with one end of the surface of the water pump body, the top of the right-angle connecting pipe is connected with the bottom end of the sewage device, and the end of the right-angle connecting pipe is provided with a leakage prevention device. The present invention relates to the technical field of tunnel sewage equipment. The subway water pump coupling device achieves the effect of multi-stage sealing, can perform multi-stage sealing, reduces the influence of external force or vibration, is not easy to leak, is safe and reliable, and improves sewage discharge efficiency and performance.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel sewage discharge equipment, in particular to a subway water pump coupling device. Background Art

[0002] Submersible pumps are important equipment for deep well water extraction. The submersible pump automatic coupling device is a device used in conjunction with a submersible pump (referring to a submersible pump used in a sewage system), and is mainly composed of a submersible sewage pump, an automatic coupling device, and a water outlet pipe assembly. The function of the water pump coupling is to facilitate the installation and maintenance of the water pump. The water pump can be lifted out of the water tank or equipment pit by one or more people, avoiding the need for people to enter the sewage tank where the water pump is located to dismantle the water pump for repair or maintenance.

[0003] At present, the existing water pump coupling device has an overly simple structure and poor adaptability, and is easily affected by external forces or vibrations, resulting in poor sealing effects and even leakage, which in turn affects the sewage discharge efficiency and reduces the performance. Summary of the invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: a subway water pump coupling device, comprising a water pump body, one end of the surface of the water pump body is fixedly connected to a power mechanism, a water pump coupler is fixedly connected to the surface of the water pump body and a side away from the power mechanism, and a sewage discharge device is provided at one end of the water pump coupler away from the water pump body;

[0005] The water pump coupler includes a fixed seat, and the corresponding positions on the top of the fixed seat are fixedly connected with a connecting reinforcement plate, and the top of the reinforcement plate is fixedly connected with a right-angle connecting pipe, the bottom end of the right-angle connecting pipe is connected to one end of the surface of the water pump body, and the top end of the right-angle connecting pipe is connected to the bottom end of the sewage discharge device, and the end of the right-angle connecting pipe is provided with a leakage prevention device, and the power mechanism is used as the power. At this time, the water pump body absorbs the sewage and transports it to the sewage discharge device through the water pump coupler, and then discharges it. During the sewage discharge process, the fixed seat and the connecting reinforcement plate can support the right-angle connecting pipe, so that the right-angle connecting pipe is stable, thereby reducing the influence of external force or vibration. At the same time, the leakage prevention device can be used to effectively seal the end of the right-angle connecting pipe with the water pump body and the sewage discharge device, thereby achieving a leakage prevention effect, and the interaction between the structures is used to enable the entire device to perform multi-stage sealing, reduce the influence of external force or vibration, and is not prone to leakage. It is safe and reliable, and improves the sewage discharge efficiency and performance.

[0006] Preferably, the sewage discharge device includes a sewage discharge pipe, the bottom end of the sewage discharge pipe is connected to the anti-leakage device through a flange, the sewage discharge pipe is communicated with the right-angle connecting pipe, a conical concave surface is provided on the inner wall of the sewage discharge pipe near the end position, a step surface is provided on the inner wall of the sewage discharge pipe near the end position of the conical concave surface, and a limiting groove is provided on the inner wall of the sewage discharge pipe at the center position of the step surface. When the bottom end of the sewage discharge pipe is connected to the anti-leakage device through the flange and fixed by bolts, the conical concave surface is fitted with the surface of the conical annular platform on the anti-leakage device, thereby increasing the contact area and making the connection firm. Moreover, by using the step surface as a pressing surface, a pressing force is applied to the top pressure primary sealing device on the anti-leakage device, which is helpful for subsequent sealing, has a leakage prevention effect, helps to improve sewage discharge efficiency, utilizes the interaction between structures, realizes multiple functions, is safe and reliable, and improves performance.

[0007] Preferably, the anti-leakage device includes a base, the bottom of the base is fixedly connected to the end of the right-angle connecting tube, the surface end of the base and the side away from the right-angle connecting tube is fixedly connected with a conical annular platform, the conical annular platform and the base are integrated, the base is slidably connected with a pressing guide rod at a position corresponding to the inside of the conical annular platform, the top of the pressing guide rod is fixedly connected with a top pressure primary sealing device, the inside of the base and near the bottom end of the pressing guide rod is provided with a pressurized exhaust device, the surface of the conical annular platform is provided with an expansion secondary sealing device, and the base is provided with a main channel at a position corresponding to the inside of the conical annular platform, and the main channel connects the pressurized exhaust device with the expansion The expansion secondary sealing device is connected. When the base is connected to the sewage pipe through the flange and bolts, the step surface will apply pressing force to the top pressure primary sealing device and make close contact to form a primary seal, and the pressing guide rod is used to slide in the base and the conical annular platform. At this time, the top pressure primary sealing device under pressure will apply pressure to the pressurized exhaust device through the pressing guide rod, and then the pressurized exhaust device is used to exhaust the gas, and the main channel is used to transport the gas so that the gas enters the expansion secondary sealing device, and then it is sealed again. The interaction between the structures is used to connect the entire structure, and multi-stage sealing is achieved, which is safe and reliable and improves the performance.

[0008] Preferably, a sliding hole matched with the pressing guide rod is provided in a position inside the base body corresponding to the inside of the conical annular platform, and a cavity matched with the pressurized exhaust device is provided inside the base body.

[0009] Preferably, the top pressure primary sealing device comprises a connecting hoop, the bottom of the connecting hoop is fixedly connected to the top of the pressing guide rod, the top of the connecting hoop is fixedly connected with a sealing gasket, and the bottom of the connecting hoop is fixedly connected with a sealing skirt, the surface of the sealing gasket and the surface of the sealing skirt are both arranged to be arcuate surfaces, when the top pressure primary sealing device is pressed by the step surface, the surface of the sealing gasket is tightly fitted with the step surface, and the surface of the sealing gasket is in the limiting groove, thereby playing a limiting role, making the top pressure primary sealing device not easy to shake and having good stability. At the same time, as the top pressure primary sealing device is subjected to pressure and moves as a whole under the drive of the pressing guide rod, the sealing skirt is also pressed, so that the surface of the sealing skirt is tightly fitted with the top of the conical annular platform, and the materials of the sealing gasket and the sealing skirt are both set to rubber material, so the sealing effect is good, the pressing force generated when the structures are connected is fully utilized, the sealing is promoted, it is safe and reliable, and the use performance is improved.

[0010] Preferably, the pressurized exhaust device includes a pressure plate, which is arranged inside the base, the top of the pressure plate is fixedly connected to the bottom end of the pressing guide rod, an elastic support is fixedly connected between the bottom of the pressure plate and the two sides corresponding to the inside of the base close to the end position, an elastic sac is arranged between the bottom of the pressure plate and the two sides corresponding to the inside of the base and close to the elastic support, the air port of the elastic sac is connected to the bottom end of the main channel, when the pressurized exhaust device is pressed by the pressing guide rod, the pressure plate compresses the elastic support and the elastic sac, The elastic support member is elastically deformed, and combined with the action force and the reaction force, the elastic support member applies a reverse elastic force to the pressure plate, thereby causing the pressing guide rod to press the primary sealing device in the opposite direction, so that the sealing gasket and the sealing skirt are pressed and fit tightly with the contact surface, thereby promoting sealing. At the same time, the compressed internal gas of the elastic bladder is discharged and transported through the main channel to the annular groove on the expansion secondary sealing device, thereby facilitating subsequent re-sealing. The structures are interconnected and interact with each other to realize multiple functions, which is safe and reliable and improves the performance of use.

[0011] Preferably, the surface of the pressure plate is configured as an arc-shaped surface, and the surface of the elastic support member is configured as an arc-shaped surface.

[0012] Preferably, the expansion secondary sealing device includes an annular groove, which is provided on the surface of the conical annular platform, an arc-shaped bronchial passage is provided inside the conical annular platform, the end of the arc-shaped bronchial passage is connected to the annular groove, the air port of the arc-shaped bronchial passage is connected to the top of the main channel, an elastic expansion membrane is fixedly connected to the surface of the conical annular platform and located at the position of the annular groove, and a sealing layer is provided on the surface of the elastic expansion membrane. When the compressed elastic capsule is discharged into the main channel and transported to the annular groove through the arc-shaped bronchial passage, as the gas pressure increases, the elastic expansion membrane drives the sealing layer to expand, thereby making the surface of the multiple groups of sealing layers fit tightly with the conical concave surface, thereby achieving re-sealing, not prone to leakage, making full use of the gas pressure, cleverly connecting the structures together, being safe and reliable, and improving the performance of use.

[0013] The present invention provides a subway water pump coupling device, which has the following beneficial effects:

[0014] 1. The subway water pump coupling device, through the water pump body, power mechanism, water pump coupler, sewage device, fixed seat, connection reinforcement plate, right-angle connection pipe, anti-leakage device, uses the power mechanism as power. At this time, the water pump body absorbs sewage, and transports it to the sewage device through the water pump coupler, and then discharges it. In the sewage discharge process, the fixed seat and the connection reinforcement plate can support the right-angle connection pipe, so that the right-angle connection pipe is stable, thereby reducing the influence of external force or vibration. At the same time, the anti-leakage device can be used to effectively seal the end of the right-angle connection pipe with the water pump body and the sewage device, thereby achieving an anti-leakage effect. By using the interaction between the structures, the entire device can be sealed at multiple levels, reducing the influence of external force or vibration, and is not prone to leakage. It is safe and reliable, and improves sewage discharge efficiency and performance.

[0015] 2. The subway water pump coupling device is connected to the anti-leakage device through the sewage discharge device, the sewage discharge pipe, the conical concave surface, the step surface, and the limiting groove. When the bottom end of the sewage discharge pipe is connected to the anti-leakage device through the flange and fixed by bolts, the conical concave surface fits with the surface of the conical annular platform on the anti-leakage device, thereby increasing the contact area and making the connection firm. The step surface is used as a pressing surface to apply a pressing force to the top pressure primary sealing device on the anti-leakage device, which is helpful for subsequent sealing and has a leakage prevention effect. It helps to improve the sewage discharge efficiency, utilizes the interaction between the structures, realizes multiple functions, is safe and reliable, and improves the performance.

[0016] 3. The subway water pump coupling device is connected to the sewage pipe through the base, the conical annular platform, the pressing guide rod, the top pressure primary sealing device, the pressurized exhaust device, the expansion secondary sealing device, and the main channel. When the base is connected to the sewage pipe through the flange and the bolts, the step surface will apply a pressing force to the top pressure primary sealing device and make close contact to form a primary seal, and the pressing guide rod is used to be a sliding connection in the base and the conical annular platform. At this time, the top pressure primary sealing device under pressure will apply pressure to the pressurized exhaust device through the pressing guide rod, and then the pressurized exhaust device is used to exhaust the gas, and the main channel is used to transport the gas so that the gas enters the expansion secondary sealing device, and then it is sealed again. The interaction between the structures is used to connect the entire structure, and multi-stage sealing is achieved, which is safe and reliable, and improves the performance.

[0017] 4. The subway water pump coupling device includes a top-pressing primary sealing device, a connecting hoop, a sealing gasket, and a sealing skirt. When the top-pressing primary sealing device is pressed by the step surface, the surface of the sealing gasket is tightly fitted with the step surface, and the surface of the sealing gasket is in the limiting groove, thereby playing a limiting role, making the top-pressing primary sealing device not easy to shake and having good stability. At the same time, as the top-pressing primary sealing device is pressed and moves as a whole under the drive of the pressing guide rod, the sealing skirt is also pressed, so that the surface of the sealing skirt is tightly fitted with the top of the conical annular platform, and the materials of the sealing gasket and the sealing skirt are set to rubber material, so the sealing effect is good, the pressing force generated when the structures are connected is fully utilized, the sealing is promoted, safety and reliability are improved, and the use performance is improved.

[0018] 5. The subway water pump coupling device includes a pressurized exhaust device, a pressure plate, an elastic support member, and an elastic bladder. When the pressurized exhaust device is pressed by the pressing guide rod, the pressure plate compresses the elastic support member and the elastic bladder. At this time, the elastic support member is elastically deformed, and combined with the action force and the reaction force, the elastic support member applies a reverse elastic force to the pressure plate, thereby causing the pressing guide rod to press the primary sealing device in the opposite direction, so that the sealing gasket and the sealing skirt are tightly fitted with the contact surface after being pressed, thereby promoting sealing. At the same time, the compressed internal gas of the elastic bladder is discharged and transported to the annular groove on the expansion secondary sealing device through the main channel, thereby facilitating subsequent re-sealing. The structures are interconnected and interact with each other to realize multiple functions, which is safe and reliable and improves the performance.

[0019] 6. The subway water pump coupling device, through the expansion secondary sealing device, annular groove, arc-shaped tributary, elastic expansion membrane, and sealing layer, when the compressed elastic bladder is discharged into the main channel and transported to the annular groove through the arc-shaped tributary, as the gas pressure increases, the elastic expansion membrane drives the sealing layer to expand, and then the surface of the multiple sealing layers fits tightly with the conical concave surface, achieving re-sealing, not prone to leakage, making full use of the gas pressure, cleverly connecting the structures together, being safe and reliable, and improving the performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the water pump coupler of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the sewage discharge device of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the anti-leakage device of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the top pressure primary sealing device of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the pressurized exhaust device of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the expansion secondary sealing device of the present invention.

[0027] In the figure: 1 water pump body, 2 power mechanism surface, 3 water pump coupler, 4 sewage device, 5 fixing seat, 6 connection reinforcement plate, 7 right-angle connecting pipe, 8 anti-leakage device, 41 sewage pipe, 42 conical concave surface, 43 step surface, 44 limiting groove, 81 base, 82 conical annular platform, 83 pressing guide rod, 84 top pressure primary sealing device, 85 pressurized exhaust device, 86 expansion secondary sealing device, 87 main channel, 841 connecting hoop, 842 sealing gasket, 843 sealing skirt, 851 pressure plate, 852 elastic support member, 853 elastic capsule, 861 annular groove, 862 arc-shaped bronchial passage, 863 elastic expansion membrane, 864 sealing layer. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0029] Example 1

[0030] See also Figure 1-Figure 7 The present invention provides a technical solution: a subway water pump coupling device, comprising a water pump body 1, a power mechanism 2 is fixedly connected to one end of the surface of the water pump body 1, a water pump coupler 3 is fixedly connected to the surface of the water pump body 1 and the side away from the power mechanism 2, and a sewage discharge device 4 is arranged at one end of the water pump coupler 3 away from the water pump body 1;

[0031] The water pump coupler 3 includes a fixed seat 5, and the corresponding positions on the top of the fixed seat 5 are fixedly connected with a connecting reinforcement plate 6. The top of the reinforcement plate 6 is fixedly connected with a right-angle connecting pipe 7. The bottom end of the right-angle connecting pipe 7 is connected to one end of the surface of the water pump body 1, and the top of the right-angle connecting pipe 7 is connected to the bottom end of the sewage discharge device 4. The end of the right-angle connecting pipe 7 is provided with a leakage prevention device 8. The power mechanism 2 is used as the power. At this time, the water pump body 1 absorbs the sewage and transports it to the sewage discharge device 4 through the water pump coupler 3, and then discharges it. During the sewage discharge process, the fixed seat 5 and the connecting reinforcement plate 6 can support the right-angle connecting pipe 7, so that the right-angle connecting pipe 7 is stable, thereby reducing the influence of external force or vibration. At the same time, the leakage prevention device 8 can be used to effectively seal the end of the right-angle connecting pipe 7 with the water pump body 1 and the sewage discharge device 4, thereby achieving the effect of leakage prevention. The interaction between the structures is used to enable the entire device to be multi-stage sealed, reduce the influence of external force or vibration, and is not prone to leakage. It is safe and reliable, and improves the sewage discharge efficiency and performance.

[0032] Example 2

[0033] The sewage discharge device 4 includes a sewage discharge pipe 41, the bottom end of which is connected to the anti-leakage device 8 through a flange, the sewage discharge pipe 41 is communicated with the right-angle connecting pipe 7, a conical concave surface 42 is provided on the inner wall of the sewage discharge pipe 41 near the end position, a step surface 43 is provided on the inner wall of the sewage discharge pipe 41 near the end position of the conical concave surface 42, and a limiting groove 44 is provided on the inner wall of the sewage discharge pipe 41 at the central position of the step surface 43. When the bottom end of the sewage discharge pipe 41 is connected to the anti-leakage device 8 through a flange and fixed by bolts, the conical concave surface 42 is fitted with the surface of the conical annular platform 82 on the anti-leakage device 8, thereby increasing the contact area and making the connection firm. In addition, by using the step surface 43 as a pressing surface, a pressing force is applied to the top pressure primary sealing device 84 on the anti-leakage device 8, which is helpful for subsequent sealing, has a leakage prevention effect, and helps to improve the sewage discharge efficiency.

[0034] Example 3

[0035] The anti-leakage device 8 includes a base 81, the bottom of which is fixedly connected to the end of the right-angle connecting tube 7, a conical annular platform 82 is fixedly connected to the surface end of the base 81 and the side away from the right-angle connecting tube 7, the conical annular platform 82 and the base 81 are integral, a pressing guide rod 83 is slidably connected to the corresponding position of the inside of the base 81 and the conical annular platform 82, a top pressure primary sealing device 84 is fixedly connected to the top of the pressing guide rod 83, a pressurized exhaust device 85 is arranged inside the base 81 and near the bottom end of the pressing guide rod 83, an expansion secondary sealing device 86 is arranged on the surface of the conical annular platform 82, a main channel 87 is opened at the corresponding position of the inside of the base 81 and the conical annular platform 82, and the main channel 87 connects the pressurized exhaust device 85 with the expansion secondary sealing device 86.

[0036] A sliding hole matched with the pressing guide rod 83 is provided at a position corresponding to the inside of the base 81 and the inside of the conical annular platform 82, and a cavity matched with the pressurized exhaust device 85 is provided inside the base 81. When the base 81 is connected to the sewage pipe 41 through flanges and bolts, the step surface 43 will apply pressing force to the top-pressing primary sealing device 84 and make close contact to form a primary seal, and the pressing guide rod 83 is used to slide in the base 81 and the conical annular platform 82. At this time, the top-pressing primary sealing device 84 under pressure will apply pressure to the pressurized exhaust device 85 through the pressing guide rod 83, and then the pressurized exhaust device 85 will be used to discharge the gas, and the main channel 87 will be used to transport the gas so that the gas enters the expansion secondary sealing device 86 and is sealed again.

[0037] Example 4

[0038] The top-pressing primary sealing device 84 comprises a connecting hoop 841, the bottom of which is fixedly connected to the top of the pressing guide rod 83, a sealing gasket 842 is fixedly connected to the top of the connecting hoop 841, and a sealing skirt 843 is fixedly connected to the bottom of the connecting hoop 841. The surfaces of the sealing gasket 842 and the sealing skirt 843 are both arranged as arc-shaped surfaces. When the top-pressing primary sealing device 84 is pressed by the step surface 43, the surface of the sealing gasket 842 is closely fitted to the step surface 43. Moreover, the surface of the sealing gasket 842 is located in the limiting groove 44, thereby playing a limiting role, making the top-pressing primary sealing device 84 not easy to shake and having good stability. At the same time, as the top-pressing primary sealing device 84 is subjected to pressure and moves as a whole under the drive of the pressing guide rod 83, the sealing skirt 843 is also pressed, so that the surface of the sealing skirt 843 fits tightly with the top of the conical annular platform 82, and the materials of the sealing gasket 842 and the sealing skirt 843 are both set to rubber material, so the sealing effect is good.

[0039] The pressurized exhaust device 85 includes a pressure plate 851, which is arranged inside the base 81. The top of the pressure plate 851 is fixedly connected to the bottom end of the pressing guide rod 83, and an elastic support member 852 is fixedly connected between the two sides corresponding to the inside of the base 81 at the bottom of the pressure plate 851 and close to the end position. An elastic capsule 853 is arranged between the two sides corresponding to the inside of the base 81 and close to the elastic support member 852, and the air port of the elastic capsule 853 is connected to the bottom end of the main channel 87.

[0040] The surface of the pressure plate 851 is set as an arc surface, and the surface of the elastic support member 852 is set as an arc surface. When the pressurized exhaust device 85 is pressed by the pressing guide rod 83, the pressure plate 851 compresses the elastic support member 852 and the elastic bag 853. At this time, the elastic support member 852 is elastically deformed, and combined with the action force and the reaction force, the elastic support member 852 will apply a reverse elastic force to the pressure plate 851, and then the pressing guide rod 83 presses the top pressure primary sealing device 84 in the reverse direction, so that the sealing gasket 842 and the sealing skirt 843 are pressed and fit tightly with the contact surface, which promotes sealing. At the same time, the compressed internal gas of the elastic bag 853 is discharged and transported to the annular groove 861 on the expansion secondary sealing device 86 through the main channel 87, which is helpful for subsequent re-sealing.

[0041] The expansion secondary sealing device 86 includes an annular groove 861, which is provided on the surface of the conical annular platform 82. An arc-shaped branch airway 862 is provided inside the conical annular platform 82. The end of the arc-shaped branch airway 862 is connected to the annular groove 861. The air port of the arc-shaped branch airway 862 is connected to the top of the main channel 87. An elastic expansion membrane 863 is fixedly connected to the surface of the conical annular platform 82 and located at the position of the annular groove 861. A sealing layer 864 is provided on the surface of the elastic expansion membrane 863. When the compressed elastic capsule 853 is discharged into the main channel 87 and transported to the annular groove 861 through the arc-shaped branch airway 862, as the gas pressure increases, the elastic expansion membrane 863 drives the sealing layer 864 to expand, thereby making the surfaces of the multiple groups of sealing layers 864 fit tightly with the conical concave surface 42, thereby achieving re-sealing and preventing leakage.

[0042] When in use, first install the entire device to the specified position. When the bottom end of the sewage pipe 41 is connected to the anti-leakage device 8 through the flange and fixed by bolts, the conical concave surface 42 fits with the surface of the conical annular platform 82 on the anti-leakage device 8, increasing the contact area and making the connection firm. The step surface 43 is used as a pressing surface to apply a pressing force to the top-pressing primary sealing device 84 on the anti-leakage device 8, which helps the subsequent sealing and has a leak-proof effect, helping to improve the sewage discharge efficiency. When the base 81 is connected to the sewage pipe 41 through the flange and bolts, the step surface 43 will apply a pressing force to the top-pressing primary sealing device 84 and make close contact to form a primary seal. The pressing guide rod 83 is used to press The base 81 and the conical annular platform 82 are slidably connected. At this time, the top-pressing primary sealing device 84 under pressure will apply pressure to the pressurized exhaust device 85 through the pressing guide rod 83, and then the pressurized exhaust device 85 is used to exhaust gas, and the main channel 87 is used to transport the gas, so that the gas enters the expansion secondary sealing device 86, and then it is sealed again. When the top-pressing primary sealing device 84 is pressed by the step surface 43, the surface of the sealing gasket 842 is tightly fitted with the step surface 43, and the surface of the sealing gasket 842 is in the limiting groove 44, which plays a limiting role, making the top-pressing primary sealing device 84 not easy to shake and has good stability. At the same time, as the top-pressing primary sealing device 84 is pressed, the whole is pressed. When the guide rod 83 moves, the sealing skirt 843 is also pressed, so that the surface of the sealing skirt 843 fits tightly with the top of the conical annular platform 82, and the materials of the sealing gasket 842 and the sealing skirt 843 are set to rubber material, so the sealing effect is good, and when the pressurized exhaust device 85 is pressed by the pressing guide rod 83, the pressure plate 851 compresses the elastic support member 852 and the elastic capsule 853. At this time, the elastic support member 852 elastically deforms, and combined with the action force and the reaction force, the elastic support member 852 will apply a reverse elastic force to the pressure plate 851, thereby causing the pressing guide rod 83 to press the top primary sealing device 84 in the reverse direction, so that the sealing gasket 842 and the sealing skirt 843 are pressed and contacted with the sealing gasket 842 and the sealing skirt 843. The surface fits tightly, which promotes sealing. At the same time, the gas inside the compressed elastic sac 853 is discharged and transported to the annular groove 861 on the expansion secondary sealing device 86 through the main channel 87, which helps the subsequent re-sealing. At the same time, when the compressed elastic sac 853 is discharged into the main channel 87 and transported to the annular groove 861 through the arc-shaped branch airway 862, as the gas pressure increases, the elastic expansion membrane 863 drives the sealing layer 864 to expand, so that the surface of the multiple groups of sealing layers 864 fits tightly with the conical concave surface 42, achieving re-sealing, and it is not easy to leak. The power mechanism 2 is used as the power. At this time, the water pump body 1 absorbs the sewage and transports it to the sewage discharge device 4 through the water pump coupler 3.During the sewage discharge process, the fixing seat 5 and the connecting reinforcing plate 6 can support the right-angle connecting pipe 7, so that the right-angle connecting pipe 7 is stable, thereby reducing the influence of external force or vibration.

[0043] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A subway water pump coupling device, comprising a water pump body (1), characterized in that: One end of the surface of the water pump body (1) is fixedly connected to a power mechanism (2), a side of the surface of the water pump body (1) away from the power mechanism (2) is fixedly connected to a water pump coupler (3), and an end of the water pump coupler (3) away from the water pump body (1) is provided with a sewage discharge device (4); The water pump coupler (3) comprises a fixing seat (5), the corresponding positions on the top of the fixing seat (5) are fixedly connected with a connecting reinforcement plate (6), the top of the reinforcement plate (6) is fixedly connected with a right-angle connecting pipe (7), the bottom end of the right-angle connecting pipe (7) is connected to one end of the surface of the water pump body (1), the top end of the right-angle connecting pipe (7) is connected to the bottom end of the sewage discharge device (4), and the end of the right-angle connecting pipe (7) is provided with a leakage prevention device (8); The anti-leakage device (8) comprises a base (81), the bottom of the base (81) is fixedly connected to the end of the right-angle connecting tube (7), a conical annular platform (82) is fixedly connected to the surface end of the base (81) and the side away from the right-angle connecting tube (7), the conical annular platform (82) and the base (81) are integrally formed, and a pressing guide rod (83) is slidably connected to a position inside the base (81) corresponding to the inside of the conical annular platform (82), and the pressing guide rod (83) is A top pressure primary sealing device (84) is fixedly connected to the top, a pressure exhaust device (85) is arranged inside the base (81) and close to the bottom end of the pressing guide rod (83), an expansion secondary sealing device (86) is arranged on the surface of the conical annular platform (82), a main channel (87) is opened at a position corresponding to the inside of the base (81) and the inside of the conical annular platform (82), and the main channel (87) connects the pressure exhaust device (85) with the expansion secondary sealing device (86); A sliding hole adapted to the pressing guide rod (83) is provided in the base (81) at a position corresponding to the inside of the conical annular platform (82), and a cavity adapted to the pressurized exhaust device (85) is provided in the base (81); The top pressure primary sealing device (84) comprises a connecting hoop (841), the bottom of the connecting hoop (841) is fixedly connected to the top of the pressing guide rod (83), the top of the connecting hoop (841) is fixedly connected to a sealing gasket (842), the bottom of the connecting hoop (841) is fixedly connected to a sealing skirt (843), and the surface of the sealing gasket (842) and the surface of the sealing skirt (843) are both arranged as arc surfaces.

2. A subway water pump coupling device according to claim 1, characterized in that: The sewage discharge device (4) comprises a sewage discharge pipe (41), the bottom end of which is connected to the anti-leakage device (8) via a flange, the sewage discharge pipe (41) is connected to the right-angle connecting pipe (7), the inner wall of the sewage discharge pipe (41) is provided with a conical concave surface (42) near the end, the inner wall of the sewage discharge pipe (41) is provided with a step surface (43) near the end of the conical concave surface (42), and the inner wall of the sewage discharge pipe (41) is provided with a limiting groove (44) at the central position of the step surface (43).

3. A subway water pump coupling device according to claim 1, characterized in that: The pressurized exhaust device (85) comprises a pressure plate (851), wherein the pressure plate (851) is arranged inside the base (81), the top of the pressure plate (851) is fixedly connected to the bottom end of the pressing guide rod (83), an elastic support member (852) is fixedly connected between the bottom of the pressure plate (851) and the two sides corresponding to the inside of the base (81) close to the end position, and an elastic capsule (853) is arranged between the bottom of the pressure plate (851) and the two sides corresponding to the inside of the base (81) and close to the elastic support member (852), and the air port of the elastic capsule (853) is connected to the bottom end of the main channel (87).

4. A subway water pump coupling device according to claim 3, characterized in that: The surface of the pressure plate (851) is configured as an arc-shaped surface, and the surface of the elastic support member (852) is configured as an arc-shaped surface.

5. A subway water pump coupling device according to claim 1, characterized in that: The expansion secondary sealing device (86) comprises an annular groove (861), wherein the annular groove (861) is provided on the surface of the conical annular platform (82), an arc-shaped branch airway (862) is provided inside the conical annular platform (82), an end of the arc-shaped branch airway (862) is connected to the annular groove (861), an air port of the arc-shaped branch airway (862) is connected to the top of the main channel (87), an elastic expansion membrane (863) is fixedly connected to the surface of the conical annular platform (82) and located at the position of the annular groove (861), and a sealing layer (864) is provided on the surface of the elastic expansion membrane (863).

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