Toilet flushing device

Abstract

The present invention provides a toilet flushing device, comprising: a submersible electric pump; a pump water inlet electromagnetic control valve; a relay switch electrically connected to the submersible electric pump and the pump water inlet electromagnetic control valve to synchronously control the start of the submersible electric pump and the pump water inlet electromagnetic control valve; a water outlet nozzle or a toilet pipe docking piece, wherein the submersible electric pump is connected to the water outlet nozzle or the toilet pipe docking piece through a water pipe. The toilet flushing device of the present invention can reduce the water consumption of a single toilet flushing to less than 2L under the premise of ensuring a single toilet flushing cleanliness, and is very simple to install and maintain.

Description

Technical Field

[0001] The invention relates to the field of sanitary ware, in particular to a toilet flushing device. Background Art

[0002] Water is a daily consumable necessary for human life, and it also brings the burden of domestic wastewater treatment. As one of the domestic water uses, water used for flushing toilets accounts for as much as 1 / 3 of human domestic water use. Especially for urban operation systems, water used for flushing toilets is both a huge burden on water supply and a huge burden on domestic wastewater treatment. Taking China's entire cities as an example, the water used for flushing toilets can be as high as 30 billion tons per year. Therefore, the urgent demand for toilet water conservation continues to promote the innovation of various toilet flushing technologies.

[0003] Toilet flushing is the process of using the momentum of water to flush the walls of the toilet and carry away the dirt. The momentum of water is equal to the mass of water per unit time multiplied by the water flow rate. Some existing toilet water-saving technologies save water by simply reducing drainage, but due to insufficient momentum of flushing, the dirt on the toilet walls cannot be flushed clean, so repeated flushing is required, which wastes more water; some save water by raising the position of the water tank and increasing the flushing speed, but there is still a defect of insufficient momentum of flushing and the cost and installation and maintenance costs are high; some save water by changing the drainage method, but the fatal defect is still that insufficient momentum of flushing causes the dirt on the toilet walls to not be flushed clean, so repeated flushing is required, which wastes more water; some save water by electromagnetic boosting or vacuum negative pressure, but the cost is very expensive. Summary of the invention

[0004] The present invention provides a toilet flushing device, which adopts a multi-body double crank electric pump to increase the instantaneous high pressure of drainage, so that a high-speed water flow at the water outlet can flush and wash away the dirt on the wall of the toilet, thereby reducing toilet drainage and having low cost.

[0005] The present invention provides a toilet flushing device, comprising: a submersible electric pump; a pump water inlet electromagnetic control valve; a relay switch, electrically connected to the submersible electric pump and the pump water inlet electromagnetic control valve to synchronously control the start of the submersible electric pump and the pump water inlet electromagnetic control valve; a water outlet nozzle or a toilet pipe docking piece, wherein the submersible electric pump is connected to the water outlet nozzle or the toilet pipe docking piece through a water pipe.

[0006] In the above toilet flushing device, the relay switch is provided with a full flush contact and a half flush contact. After the full flush contact is touched, it is turned on for 4-5 seconds; after the half flush contact is touched, it is turned on for 2.5-3 seconds.

[0007] In the above-mentioned toilet flushing device, the submersible electric pump includes a pump casing and an upper end cover of the pump casing, one side of the upper end cover of the pump casing is fixedly connected to a driving crank revolving shaft, and a driven crank common rail revolving shaft is eccentrically arranged on the end face of the end of the driving crank revolving shaft; the diameter of the driven crank common rail revolving shaft is smaller than the diameter of the driving crank revolving shaft; a plurality of driven members are sleeved on the driven crank common rail revolving shaft, one side of the driven member is connected to a connecting rod blade through a pin shaft, the outer side of the connecting rod blade is movably connected to a driving rotor, and the driving rotor is The end of the pump casing is connected with a pump shaft, and the pump shaft is used to connect the motor. The other end of the active rotor is provided with a rotor end cover sleeved on the revolving shaft of the active crank. A plurality of rotor retaining walls are evenly distributed between the rotor end cover and the active rotor, and one side of the rotor retaining wall is in contact with the outer side of the connecting rod blade; bearing holes are provided at both ends of the pump casing, and one end of the pump casing is fixedly connected to the upper end cover of the pump casing, and the other end is connected to the pump shaft through a bearing, and the bearing hole at the connecting end of the pump casing and the upper end cover of the pump casing is connected to the rotor end cover through a bearing.

[0008] In the above toilet flushing device, the driven member includes a hollow cylinder sleeved on the driven crank common rail revolving shaft, a hollow shaft is fixedly connected to the side wall of the hollow cylinder, and the hollow shaft is movably connected to the inner side of the connecting rod blade.

[0009] In the above-mentioned toilet flushing device, connecting holes are provided on both sides of the connecting rod blade, and the cross-section of the part of the connecting rod blade located between the two connecting holes is an arc-shaped plate structure; and an inward-concave rectangular groove is provided at the connecting hole on the inner side of the connecting rod blade, and the rectangular groove divides the connecting hole on the inner side of the connecting rod blade into two upper and lower parts, and the hollow shaft is clamped in the rectangular groove, and is connected to the connecting holes at the upper and lower ends of the rectangular groove through a pin shaft.

[0010] The toilet flushing device of the present invention can reduce the water consumption of a single flushing to less than 2L while ensuring cleanliness of the toilet. Compared with the 6.0L displacement advanced technology level required by the latest Chinese national standard "Toilet Water Efficiency Limit Values ​​and Water Efficiency Grades", the water saving rate can be further achieved by more than 66%.

[0011] By adopting the toilet flushing device of the present invention, the cost of using toilet booster flushing technology can be greatly reduced; compared with the manufacturing cost of toilet booster flushing devices with electromagnetic booster or vacuum negative pressure, the toilet flushing device of the present invention is economical and practical, and is very easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic diagram of a toilet flushing device according to the present invention is shown.

[0013] Figure 2A schematic diagram of the structural decomposition of the submersible electric pump of the present invention is shown.

[0014] Figure 3 A partial cross-sectional schematic diagram of a submersible electric pump of the present invention is shown.

[0015] Figure 4 The schematic diagram of the structure of the active crank revolving shaft and the driven crank common rail revolving shaft of the submersible electric pump of the present invention is shown. DETAILED DESCRIPTION

[0016] The following embodiments may enable those skilled in the art to more fully understand the present disclosure, but are not intended to limit the present disclosure in any way.

[0017] The toilet flushing device of the present invention comprises a submersible electric pump 21, a pump water inlet electromagnetic control valve 22, a relay switch 23, and a water outlet nozzle or toilet pipe docking piece 24. In some embodiments, the pump water inlet electromagnetic control valve 22 can be omitted.

[0018] like Figure 1 As shown, in some embodiments, the relay switch 23 synchronously controls the start-up of the submersible electric pump 21 and the electromagnetic control valve 22 at the pump water inlet, and pumps the water to the outlet nozzle or the toilet pipe docking piece 24 for high-speed spraying. In some embodiments, after each touch of the relay switch 23, the submersible electric pump 21 works for 2.5-5 seconds, and the electromagnetic control valve 22 at the synchronous pump water inlet opens for 2.5-5 seconds and then automatically closes.

[0019] As described above, the relay switch 23 is electrically connected to the submersible electric pump 21 and the pump water inlet electromagnetic control valve 22 to synchronously control the start-up work of the submersible electric pump 21 and the pump water inlet electromagnetic control valve 22. The submersible electric pump 21 is connected to the outlet nozzle or the toilet pipe docking piece 24 through a water pipe, and the water pipe can be a plastic water pipe or a metal water pipe.

[0020] In some embodiments, due to the limitation of the internal installation space of the toilet tank and the limitation of the working effect of the device, the submersible electric pump 21 has strict volume and shape requirements and working performance requirements; the volume and shape requirements shall not exceed the volume and shape of the existing toilet drain valve, that is, the volume and shape is less than or equal to Φ80mm×h190mm; the working performance requirements are to achieve high-speed water flow to flush the toilet wall, and the working performance of the pump should meet the instantaneous working pressure of 1.2kg and the instantaneous flow rate of 500ml; under the above two restrictions, the various existing pump technologies are not in compliance with the product cost control requirements, so the toilet flushing device of the present invention adopts multi-body double crank pump technology to achieve the above goals. In some embodiments, the design mode of the relay switch 23 is a time-delay disconnection normally open contact switch, which is designed with a full flush contact and a half flush contact. According to the actual working condition of the toilet, after the full flush contact is touched, the toilet flushing device works for 4-5 seconds; after the half flush contact is touched, the toilet flushing device works for 2.5-3 seconds.

[0021] In some embodiments, when the toilet flushing device of the present invention is used in shared toilets and other occasions, the pump water inlet electromagnetic control valve 22 can be replaced with a water outlet nozzle or a toilet pipe connector 24 for use in combination, and its function is changed to a water outlet control valve at the end of the pipe network.

[0022] The working principle of the present invention to achieve water saving is as follows: Taking the parameters of the universal water-saving toilet designed by Kohler as an example, the drainage standard of the universal water-saving toilet designed by Kohler is 6000ml / time, and the key technology to ensure clean flushing of the toilet is that the water flow velocity on the toilet wall is above 2.5m / s, the flushing delay is 4s, the instantaneous drainage volume is 1500ml / s, and the flushing cleanliness rate is above 99%; with this technical standard as a reference, the present invention adopts multi-body double crank pump technology to pump the water in the toilet water tank instantaneously to achieve a cross-sectional area of ​​50mm 2 The water outlet flows at a speed of 8m / s to flush the toilet wall, and the instantaneous flow rate of 500ml / s is designed to delay flushing for 4s, thereby ensuring that the total drainage volume in a single flush is within 2000ml to achieve the same clean flushing performance as the general water-saving toilet designed by Kohler, greatly improving the flushing and emission reduction of the toilet.

[0023] The toilet flushing device of the present invention utilizes the efficiency-volume ratio advantage of a multi-body double crank pump. A multi-body double crank pump is a volumetric pump technology in which two or more double crank mechanisms are optimized and coexist in the same pump cavity. Under the condition of limiting the volume and shape of the electric pump, the multi-body double crank mechanism pump can increase or decrease the flow rate and lift of the pump by adjusting the length of the double crank frame. It is used in narrow installation spaces such as toilets, household water purifiers, and skid-mounted micro sewage treatment stations. The multi-body double crank mechanism pump has an absolute efficiency-volume ratio advantage. Taking the volume and shape of a pump with a diameter of less than Φ80mm that meets the installation space requirements of a toilet water tank as an example, the performance difference between a multi-body double crank pump and the existing general pump technology is compared. The maximum designable flow rate per second of an impeller pump below Φ80mm (commonly known as a centrifugal pump) is about 600ml / s, which is in a smooth pipeline with no pressure head water resistance (cross-sectional area 490mm 2 Under the condition of fully open gate, the outlet flow rate can reach 2m / s. If the outlet cross-sectional area is reduced to 50mm (in order to achieve 8m / s high-speed water flow), the outlet flow rate can reach 2m / s. 2 , its flow rate will drop below 100ml / s, which is far from meeting the requirements of toilet flushing; plunger pumps below Φ80mm (a general positive displacement pump most suitable for designing small and micro volume shapes) can meet the requirements of cross-sectional area of ​​50mm 2 The outlet high-speed water flow requirement, but the maximum flow of the plunger pump below Φ80mm can only be designed to be about 80ml / s, which is far from meeting the toilet clean flushing requirements; multi-body double crank pumps below Φ80mm can only meet the cross-sectional area of ​​50mm 2Under the premise of meeting the high-speed water flow requirement at the water outlet, the flow rate per second can reach more than 500ml, which can fully meet the requirements of clean flushing of the toilet.

[0024] The toilet flushing device of the present invention can reduce the water consumption of a single flushing to less than 2L while ensuring a clean single flushing. Compared with the 6.0L displacement advanced technology level required by the latest Chinese national standard "Toilet Water Efficiency Limit Values ​​and Water Efficiency Grades", the water saving rate is further achieved by more than 66%. However, other toilet flushing technologies that can achieve the same water-saving purpose cannot ensure a clean single flushing, especially flushing the toilet after defecation, because the momentum of the water is insufficient.

[0025] By adopting the toilet flushing device of the present invention, the cost of using toilet booster flushing technology can be greatly reduced; compared with the manufacturing cost of electromagnetic booster or vacuum negative pressure toilet booster flushing devices (the cost of a complete set of production is more than 500 yuan), the toilet flushing device of the present invention is economical and applicable (the cost of a complete set of production is less than 150 yuan), and is very easy to install and maintain.

[0026] The submersible electric pump 21 is further described below.

[0027] like Figures 2 to 4 As shown, the submersible electric pump 21 includes a pump casing 1 and an upper end cover 2 of the pump casing, a driving crank revolving shaft 3 is fixedly connected to one side of the upper end cover 2 of the pump casing, a driven crank common rail revolving shaft 4 is eccentrically arranged on the end face of the end of the driving crank revolving shaft 3, the cross section of the driven crank common rail revolving shaft 4 is not concentric with the cross section of the driving crank revolving shaft 3, and is contained in the cross section of the driving crank revolving shaft 3; the long-diameter specifications of the two depend on the yield strength of the material under the working pressure requirement; the diameter of the driven crank common rail revolving shaft 4 is smaller than the diameter of the driving crank revolving shaft 3; a plurality of driven members 5 are sleeved on the driven crank common rail revolving shaft 4, and the line segment between the two large and small circle centers of each driven member 5 is the driven crank AB; the driven member 5 is adapted to the sleeve ring of the driven crank common rail revolving shaft 4 There are many schemes including but not limited to the left side, right side, center, and both sides; one side of the driven member 5 is connected to the connecting rod blade 6 through a pin shaft, and the outer side of the connecting rod blade 6 is movably connected to the driving rotor 7, one end of the driving rotor 7 is connected to the pump shaft 8, and the pump shaft 8 is used to connect the motor, and the other end of the driving rotor 7 is provided with a rotor end cover 9 sleeved on the active crankshaft 3, and a plurality of rotor retaining walls 10 are evenly distributed between the rotor end cover 9 and the driving rotor 7, and one side of the rotor retaining wall 10 is in contact with the outer side of the connecting rod blade 6; bearing holes are opened at both ends of the pump housing 1, and one end of the pump housing 1 is fixedly connected to the upper end cover 2 of the pump housing, and the other end is connected to the pump shaft 8 through a bearing 11, and the bearing hole at the connection end of the pump housing 1 and the upper end cover 2 of the pump housing is connected to the rotor end cover 9 through a bearing 11. Pump chamber retaining walls are correspondingly arranged on both sides of the pump housing 1. After development and research, the size specification of the pump chamber retaining wall should be equal to the rotor retaining wall 10, and its cumulative work difference should be ≤0.1mm.

[0028] In some embodiments, the driven member 5 includes a hollow cylinder sleeved on the driven crank common rail revolving shaft 4, a hollow shaft is fixedly connected to the side wall of the hollow cylinder, and the hollow shaft is movably connected to the inner side of the connecting rod blade 6. Connecting through holes are provided on both sides of the connecting rod blade 6, and the line segment between the hole centers of the two connecting through holes of the connecting rod blade 6 is the connecting rod BC, and the cross section of the part of the connecting rod blade 6 located between the two connecting through holes is an arc-shaped plate-like structure; and a concave rectangular groove is provided at the connecting through hole on the inner side of the connecting rod blade 6, and the rectangular groove divides the connecting through hole on the inner side of the connecting rod blade 6 into two parts, and the hollow shaft is clamped in the rectangular groove, and is connected to the connecting through holes at the upper and lower ends of the rectangular groove through a pin shaft. The line segment between the center of the connecting through hole at the outer end of the connecting rod blade 6 and the center of the active rotor is the active crank CD. The ratio of the length of the crank frame AD to the length of the active crank should be less than 0.2, so as to meet the reasonable proportional relationship between the transmission angle and the pressure angle of the double crank mechanism.

[0029] In some embodiments, the cross-section of the active rotor 7 is a circular structure, the center of one end of the active rotor 7 is connected to the pump shaft 8, and the side of the other end is connected to the rotor retaining wall 10; the outer side of the rotor retaining wall 10 is smoothly connected to the side of the active rotor 7, and the inner side is an arc-shaped structure; the width of the cross-section of the rotor retaining wall 10 gradually increases from one end to the other end, and an arc-shaped groove is provided at the end of the rotor retaining wall 10 with the largest width; a connecting hole is provided on the active rotor 7, and the connecting through hole on the outer side of the connecting rod blade 6 is connected to the connecting hole through a pin shaft, and the outer side wall of the connecting rod blade 6 is located in the arc-shaped groove.

[0030] In some embodiments, the active rotor 7 revolves around the active crank orbital axis 3 and simultaneously pushes each connecting rod blade 6, and the connecting rod blade 6 drives each driven member 5 to perform common rail differential coordinated motion around the driven crank common rail orbital axis 7; during the motion process, due to the periodic change of the motion position of the connecting rod blade 6, the volume cavity enclosed by the active rotor 7, the connecting rod blade 6, and the driven member 5 changes periodically; during the actual motion process, at the moment when the rotor retaining wall 10 opens and the pump casing retaining wall closes, the volume of the volume cavity is the smallest, and the negative pressure generated by the volume cavity is the largest at this time, thereby starting to rapidly suck in the working fluid from the water inlet. At the same time, the volume of the volume cavity corresponding to the water outlet is the largest and generates the maximum positive pressure, thereby starting to rapidly squeeze out the working fluid to the water outlet, thereby realizing the process of the pump cavity sucking in and removing the working fluid.

[0031] In some embodiments, the efficiency volume ratio advantage of the multi-body double crank pump is as follows: Figure 3As shown, multiple sets of hyperbolic mechanism devices consisting of rotor 1, connecting rod blade 2, follower 3, follower common rail revolution shaft 4 coexist in the same pump cavity, dividing into motion volume chambers of different volumes. Under the conditions of pump volume shape and motor speed rating, the flow efficiency and head efficiency of the pump completely depend on the distance from the axis of the follower common rail revolution shaft to the center of the pump casing (frame AD). The longer the frame length, the greater the volume difference between motion volume chambers of different volumes. As the volume difference increases, the flow and head generated by a single pump revolution increase synchronously in direct proportion, thereby achieving an efficiency-volume ratio advantage.

[0032] The present invention uses the active rotor to restrict the connecting rod blades and the driven parts to move in common rail differential coordination in the active rotor cavity with the integral frame; the concentric bearings at the upper and lower ends of the active rotor cooperate with the concentric bearing holes set at the upper and lower ends of the pump casing to restrict the concentric movement in the pump casing cavity. The active rotor solves the common radial runout and axial movement problems of positive displacement pumps, and simplifies the rotor assembly structure relationship. The number of parts processed and manufactured for the two-body double crank, three-body double crank, and four-body double crank are 8, 10, and 12 respectively, which greatly reduces the processing and assembly manufacturing costs.

[0033] Under the conditions of rated volume and frame length, the structure provided by the present invention can change the flow rate and head of the pump by changing the speed of the motor, and the speed of the motor is proportional to the flow rate and head of the pump. The present invention can easily achieve a high-efficiency volume flow ratio. For example, under the same volume conditions, the same flow rate benefit as a centrifugal impeller pump and a head several times that of a centrifugal impeller pump can be obtained.

[0034] Those skilled in the art should understand that the above embodiments are merely exemplary embodiments and that various changes, substitutions and alterations may be made without departing from the spirit and scope of the present application.

Claims

1. A toilet flushing device, comprising: Submersible electric pumps; Pump water inlet electromagnetic control valve; A relay switch, electrically connected to the submersible electric pump and the pump water inlet electromagnetic control valve, to synchronously control the start-up of the submersible electric pump and the pump water inlet electromagnetic control valve; A water outlet nozzle or a toilet pipe docking piece, wherein the submersible electric pump is connected to the water outlet nozzle or the toilet pipe docking piece through a water pipe; The submersible electric pump comprises a pump casing and an upper end cover of the pump casing, one side of the upper end cover of the pump casing is fixedly connected with a driving crank revolving shaft, and a driven crank common rail revolving shaft is eccentrically arranged on the end surface of the end of the driving crank revolving shaft; the diameter of the driven crank common rail revolving shaft is smaller than the diameter of the driving crank revolving shaft; a plurality of driven members are sleeved on the driven crank common rail revolving shaft, one side of the driven member is connected with a connecting rod blade through a pin shaft, the outer side of the connecting rod blade is movably connected with a driving rotor, and one end of the driving rotor is connected to the pump shaft , the pump shaft is used to connect the motor, the other end of the active rotor is provided with a rotor end cover sleeved on the active crankshaft, a plurality of rotor retaining walls are evenly distributed between the rotor end cover and the active rotor, one side of the rotor retaining wall is in contact with the outer side of the connecting rod blade; bearing holes are opened at both ends of the pump casing, and one end of the pump casing is fixedly connected to the upper end cover of the pump casing, and the other end is connected to the pump shaft through a bearing, and the bearing hole at the connection end of the pump casing and the upper end cover of the pump casing is connected to the rotor end cover through a bearing; The driven member comprises a hollow cylinder sleeved on the driven crank common rail revolving shaft, a hollow shaft is fixedly connected to the side wall of the hollow cylinder, and the hollow shaft is movably connected to the inner side of the connecting rod blade; Connecting holes are provided on both sides of the connecting rod blade, and the cross-section of the part of the connecting rod blade located between the two connecting holes is an arc-shaped plate structure; and an inwardly concave rectangular groove is provided at the connecting hole on the inner side of the connecting rod blade, and the rectangular groove divides the connecting hole on the inner side of the connecting rod blade into two upper and lower parts, and the hollow shaft is clamped in the rectangular groove, and is connected to the connecting holes at the upper and lower ends of the rectangular groove through pins, the crank frame is the distance from the axis center of the common rail revolving shaft of the driven part to the center center of the pump casing, the line segment between the center center of the connecting hole at the outer end of the connecting rod blade to the center center of the active rotor is the active crank, and the ratio of the crank frame length to the active crank length is less than 0.

2.

2. The toilet flushing device according to claim 1, wherein: The relay switch is provided with a full-charge contact and a half-charge contact. After the full-charge contact is touched, it is turned on for 4-5 seconds; after the half-charge contact is touched, it is turned on for 2.5-3 seconds.

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