Household submersible pump

Abstract

The present invention relates to a household submersible pump, which comprises a pump seat, a pump body and a signal lamp assembly, wherein the pump seat is provided with a water outlet, a water inlet and a first filter screen; the pump body comprises a pump inner shell and a pump outer shell, the pump inner shell has an inner electrical cavity and a front mounting seat, the inner electrical cavity is provided with a circuit board, and the pump outer shell has a front guide seat; the signal lamp assembly comprises a signal lamp and a light guide column with a waterproof sealing ring embedded thereon; the signal lamp is connected to the circuit board, the light guide column is arranged to be able to penetrate the front guide seat and insert the front mounting seat in a first state and rotate to a second state locked in the front mounting seat, and is arranged to be able to guide the light of the signal lamp out of the pump housing. The present invention not only realizes the outward propagation of light but also realizes IPX8 waterproofing.

Description

Technical Field

[0001] The invention relates to the technical field of submersible pumps, and in particular to a household submersible pump. Background Art

[0002] Submersible household pumps are increasingly used in swimming pools, wastewater tanks, etc. However, current submersible household pumps are not satisfactory in many aspects, such as:

[0003] 1) The use of lights to transmit pump fault or working information is still a blank area, that is, the use of light signals to transmit information has not yet been involved: if the environment is dim or the pump is underwater, the user has no way to directly detect the true status of the pump, and cannot promptly deal with the fault situation;

[0004] 2) The water inlet of the pump seat has only a single-layer filtering function, which is only effective for filtering particulate matter, but not for fibrous matter, often causing the pump to be blocked and burned. In addition, the filter cannot be disassembled or is difficult to disassemble. Professional staff are often required to disassemble and clean the pump, which is time-consuming and laborious, and affects the quality and service life of the pump;

[0005] 3) The water outlet on the pump seat is connected to the elbow or joint through threads. This structure has high requirements for general users, the threads are easily damaged, the installation efficiency is low, the installation is not reliable and it is easy to cause leakage. When the pipeline has been connected to the elbow joint, it is more difficult to connect it to the water pump again. In addition, the threads are easy to loosen during installation and use, causing leakage;

[0006] 4) In terms of automatically starting and stopping the pump by sensing the water level, existing household submersible pumps only focus on the settings of the pump in the normal standing state. When the pump is in other tilted or dumped states, the control system will fail. For example:

[0007] When the pump is in a tipping state and the water level is higher than the normal starting water level but lower than the impeller position height when the impeller is tipping, the pump will work but will not be able to drain water; the existing probe sensing switch will provide an erroneous judgment after sensing the water level, and the pump will continue to operate in such a water level state, but this operation is ineffective (no drainage), which will eventually shorten the life of the pump or even cause it to be scrapped.

[0008] For a pump using a conventional float switch, when the pump is in a dumping state, the conventional float switch used will fail, and the pump will not work even if the water level is higher than the impeller position height when the impeller is dumped. Summary of the invention

[0009] In order to overcome the above-mentioned defects, firstly, it would be advantageous for the present invention to provide a household submersible pump capable of displaying the working / fault status through a signal light; secondly, it would be more advantageous for the present invention to provide a household submersible pump with a secondary filtration function that can not only filter particulate matter but also filter fibrous matter; furthermore, it would be more advantageous for the present invention to provide a household submersible pump capable of facilitating the quick plugging and unplugging, installation and disassembly of water pipes; finally, it would be most advantageous for the present invention to provide a household submersible pump capable of all-round sensing of the water level to avoid ineffective operation of the pump when the pump is tilted.

[0010] To achieve the above object, the present invention provides a household submersible pump, comprising:

[0011] A pump seat is provided with a water outlet at the rear side and a water inlet at the bottom, and a first filter screen is provided in the pump seat directly opposite to the water inlet;

[0012] The pump body comprises a pump inner shell and a pump outer shell, wherein the pump inner shell comprises an inner electrical cavity and a front mounting seat, wherein a circuit board is installed in the inner electrical cavity, and the pump outer shell comprises a front guide seat arranged corresponding to the position of the front mounting seat;

[0013] The signal lamp assembly comprises a signal lamp and a light guide column with a waterproof sealing ring embedded thereon. The signal lamp is connected to the circuit board. The light guide column is configured to be able to rotate from a first state of penetrating a front guide seat and being inserted into a front mounting seat to a second state of being locked in the front mounting seat, and capable of directing the light of the signal lamp to the outside of the pump housing.

[0014] In the present invention, the signal light and the circuit board are integrally installed in the inner electrical cavity, and the light guide column and the inner electrical cavity are provided with a waterproof sealing ring to achieve IPX8 waterproof level; the light guide column can be inserted into and locked on the front mounting seat of the pump inner shell; the light energy of the signal light is transmitted to the outside through the light guide column, so that the signal light can be observed from the outside of the water pump to identify the working / fault status of the water pump.

[0015] Furthermore, the light guide column is locked in the front mounting seat in the second state with the aid of a self-locking mechanism, and the self-locking mechanism includes a first locking member and a second locking member, the first locking member is a locking male body or a locking female body formed on the light guide column, and the second locking member is a locking female body or a locking male body formed on the front mounting seat.

[0016] Through the above-mentioned structural arrangement, the light guide column can be locked onto the front mounting seat in the second state by means of the self-locking mechanism, thereby effectively positioning it.

[0017] Furthermore, the front mounting seat includes a light guide column mounting groove with an opening on the upper side and a light guide column locking plate located above the light guide column mounting groove, the first locking member is a locking block formed on the light guide column, and the second locking member is an open locking groove formed on the light guide column locking plate and adapted to the locking block. In the first state, the locking block is located outside the open locking groove and the light guide column can move back and forth along the light guide column mounting groove. In the second state, the locking block is engaged in the open locking groove so that the light guide column is locked in the front mounting seat.

[0018] Through the above-mentioned structural arrangement, the light guide column can be installed on the front mounting seat in the first state, and the light guide column can be rotated to enter the second state from the first state. In the second state, the light guide column is fixed in the front mounting seat by means of a self-locking mechanism.

[0019] Furthermore, the light guide column installation groove has an inner port, and the signal light is arranged opposite to the inner port. Preferably, the signal light is an LED light.

[0020] Through this structural arrangement, the light of the LED lamp can enter the light guide column through the inner port.

[0021] Furthermore, the installation groove of the light guide column is a stepped groove, which includes a small diameter hole, a medium diameter hole and a large diameter hole. Correspondingly, the light guide column includes a small diameter section, a medium diameter section and a large diameter section, wherein the small diameter section is arranged corresponding to the size of the small diameter hole and the inner port, the medium diameter section is arranged corresponding to the size of the medium diameter hole, and a circumferential groove for receiving a waterproof sealing ring is arranged on the medium diameter section, the large diameter section is arranged corresponding to the size of the large diameter hole, and the front guide seat is arranged to be suitable for receiving the large diameter section.

[0022] Through the above-mentioned structural setting, three waterproof lines are formed between the light guide column and the light guide column mounting groove. The first waterproof line exists between the large diameter section and the medium diameter hole, the second waterproof line exists between the waterproof sealing ring and the medium diameter hole, and the third waterproof line exists between the medium diameter section and the small diameter hole, so that the waterproof effect is stronger.

[0023] Furthermore, the pump body also includes a mask clamped on the outer front side of the pump shell, and a lamp eye opening is provided on the mask corresponding to the front guide seat. The light guide column has a front gripper, which includes an outer lamp eye and an inner stopper whose size is larger than the outer lamp eye. The inner stopper is located between the mask and the front guide seat, and the outer lamp eye is received in the lamp eye opening.

[0024] In the above structure, the front gripper is provided to facilitate holding the light guide column, so that the light guide column can be easily rotated manually for installation and locking; by providing the inner stopper on the front gripper, the light guide column is assisted in positioning through the pump housing and the mask.

[0025] Furthermore, the front guide seat has a guide channel for receiving the light guide column, and the lamp eye is arranged opposite to the guide channel.

[0026] Through the above-mentioned structural arrangement, the light guide column installed in the guide channel and the light guide column installation groove receives light from the signal lamp and displays it at the lamp eye position.

[0027] Still further, the circuit board is configured to control the color change of the signal light to display a working or fault signal through the light guide column.

[0028] Through the above arrangement, the user can judge whether the household submersible pump is in working state or in fault state by means of the color of the signal light displayed by the light guide column.

[0029] Furthermore, a second filter screen is provided at the water inlet, which is detachably mounted on the bottom of the water inlet outside the first filter screen, and the aperture of the filter holes provided on the second filter screen is smaller than the aperture of the filter holes provided on the first filter screen.

[0030] Through the above-mentioned structural arrangement, it is possible to effectively prevent long strips or fibrous objects from entering the water pump without affecting the pump performance.

[0031] Furthermore, the pore size of the filter holes on the second filter screen is 2 to 4 mm.

[0032] Furthermore, a slot is provided at the bottom of the pump seat, and buckles matching the slot are provided around the second filter screen.

[0033] Through the above structural setting, the second filter screen can be connected to the card slot at the bottom of the pump body through the buckle, and the screw-free design allows the user to disassemble and clean it at any time, which is simple and convenient to operate.

[0034] Furthermore, the second filter screen is also provided with actuating ribs for facilitating the disassembly and assembly of the second filter screen.

[0035] When installing and removing the second filter screen, the user can use fingers to move the moving ribs to conveniently install and remove the second filter screen.

[0036] Furthermore, at least two slots evenly distributed along the circumferential direction are provided at the bottom of the pump seat, and the number of the buckles on the second filter screen is consistent with the number of the slots.

[0037] Furthermore, on the second filter screen, the pushing ribs are arranged to correspond to the buckle positions and have the same number.

[0038] Furthermore, the water outlet is connected to a quick connector device for pluggable installation and removal of the water pipe, and the quick connector device includes a locking ring, a return spring and a movable ring which are sequentially sleeved on the water outlet, and also includes a connector with a sealing ring.

[0039] The above structural setting can completely solve the user's installation and use troubles, and all installation problems can be solved by plugging and unplugging; the threaded structure is eliminated, and the product qualification rate and production efficiency are greatly improved.

[0040] Furthermore, a lock buckle is provided on the lock ring, an annular guide groove matching the lock buckle on the lock ring is provided on the joint, and an opening is provided on the outer tube wall of the water outlet of the pump seat for the lock buckle to radially pass through to enter the annular guide groove.

[0041] Through the above structural arrangement, the elbow joint can be used in a rotatable manner in a sealed state.

[0042] Furthermore, the water outlet of the pump seat is also provided with an annular stop for limiting the axial travel of the return spring on its outer tube wall, and the inner ring of the movable ring is provided with a circle of elastic buckle, so that the return spring is positioned between the annular stop and the elastic buckle, so that when the movable ring moves axially along the outer tube wall of the water outlet, the return spring can move between the locked position and the unlocked position as the distance between the annular stop and the elastic buckle is adjusted. In the locked position, the return spring is in an extended reset state, and the lock buckle on the locking ring engages with the annular guide groove on the joint; in the unlocked position, the return spring is in a compressed state, and the lock buckle on the locking ring disengages from the annular guide groove on the joint under the action of external force, so that the joint can be pulled out of the water outlet.

[0043] Furthermore, the joint is an elbow joint or a straight pipe joint.

[0044] Furthermore, the household submersible pump also includes a water pump full-stance water level detection device, which is installed at the bottom of the pump seat and electrically connected to the circuit board, wherein the water pump full-stance water level detection device includes a first probe, a second probe, and a third probe, wherein the first probe and the second probe are located on one side of the water outlet, and the third probe is located on the other side of the water outlet, the length of the second probe is smaller than the first probe, and the lengths of the first probe and the third probe are the same.

[0045] Through the above-mentioned structural setting, the present invention, through the setting of three probes for sensing the water level and their ingenious spatial layout, can comprehensively protect the operation of the pump and fill the perfect control under special abnormal conditions; the 360° sensing response mode solves the problem that the control system can only work when the pump is in a standing state and fails in a tilted state; it does not bring about a substantial increase in costs; the failure risk of the pump is greatly reduced and the service life is greatly extended.

[0046] Furthermore, the water pump full-stance water level detection device also includes a bracket, and the bracket is provided with a main probe mounting seat for mounting the first probe and the second probe and a secondary probe mounting seat for mounting the third probe at both ends thereof.

[0047] Still further, the bracket is a plastic bracket.

[0048] Furthermore, the water pump full-stance water level detection device also includes a signal line, one end of which is electrically connected to the circuit board, and the other end of which is electrically connected to the first probe, the second probe, and the third probe respectively.

[0049] These and other aspects of the invention will be more clearly elucidated with reference to the embodiments described hereinafter. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The structure and further objects and advantages of the present invention will be better understood from the following description taken in conjunction with the accompanying drawings, in which like reference numerals identify like elements:

[0051] Figure 1 is an external stereoscopic view of a household submersible pump according to a specific embodiment of the present invention;

[0052] Figure 2 yes Figure 1 The schematic diagram of the internal structure of the domestic submersible pump shown is after the pump housing and the mask are removed and a partial cross-section is made;

[0053] Figure 3 yes Figure 1 The three-dimensional schematic diagram of the household submersible pump after removing the pump housing and the mask, in which one of the light guides is in an unlocked state and the other is in a self-locking state;

[0054] Figure 4 yes Figure 1 The schematic diagram of the internal structure of a household submersible pump after partial sectioning is shown;

[0055] Figure 5 yes Figure 2 An enlarged view of the light guide column on the left side of the figure, which also shows the waterproof sealing ring;

[0056] Figure 6 yes Figure 1 An exploded view of the structure of the domestic submersible pump, which shows the second filter screen;

[0057] Figure 7 yes Figure 1 A schematic structural diagram of a domestic submersible pump from another angle, the diagram showing a quick connector device after the explosion;

[0058] Figure 8 yes Figure 7 A longitudinal cross-sectional view of the quick connector device of the household submersible pump after the quick connector device is assembled;

[0059] Fig. 9 yes Figure 1 A partial cross-sectional view of a domestic submersible pump is shown;

[0060] Fig.10 yes Figure 1 The domestic submersible pump is shown in a plan view from the bottom of the base in a first dumped state, in which the water outlet is located on the left side of the base;

[0061] Fig.11 yes Figure 1 A plan view of the domestic submersible pump shown in a second dumped state viewed from the bottom of the base, in which the water outlet is located on the right side of the base;

[0062] Fig.12 yes Figure 1 The domestic submersible pump is shown in a plan view from the bottom of the base in a third dumped state, in which the water outlet is located on the upper side of the base;

[0063] Fig.13 yes Fig.12 The enlarged overall schematic diagram of the water level detection device for a household submersible pump is shown;

[0064] Fig.14 yes Fig.13 Another angle diagram of the water pump full posture water level detection device is shown, that is, Fig. 9 The shown diagram is an enlarged overall schematic diagram of the water level detection device for a household submersible pump in all postures. DETAILED DESCRIPTION

[0065] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0066] like Figures 1 to 7 As shown, a household submersible pump 100 according to a specific embodiment of the present invention comprises a pump body 1 and a pump seat 3. The pump body 1 has a signal light assembly 110, a pump inner shell 130, a pump outer shell 150 and a mask 170. The pump inner shell 130 has an inner electrical cavity 131 and a front mounting seat 133. A circuit board 132 is installed in the inner electrical cavity 131. The pump outer shell 150 has a front guide seat 153 arranged corresponding to the position of the front mounting seat 133. The pump seat 3 is provided with a water outlet 30 located at the rear side and a water inlet 32 ​​located at the bottom. A first filter screen 34 is arranged in the pump seat 3 opposite to the water inlet 32.

[0067] In this embodiment, the signal lamp assembly 110 includes a light guide column 113 on which a waterproof sealing ring 111 is embedded, and an LED lamp 115; the pump inner shell 130 has an inner electrical cavity 131 and a front mounting seat 133, in which a circuit board 132 is installed, and the LED lamp 115 is connected to the circuit board 132, and the front mounting seat 133 is integrally formed on the pump inner shell 130; the pump outer shell 150 has a front guide seat 153 corresponding to the position of the front mounting seat 133. Among them, the light guide column 113 is set to a first state (see FIG. 1 ) that can be inserted into the front mounting seat 133 from the front guide seat 153. Figure 3The light guide column 113 on the left side of the middle), rotates to the second state fixed in the front mounting seat 133 by means of the self-locking mechanism (see Figure 3 The light guide column 113 on the right side of the middle portion is provided so that the light of the LED lamp 115 is guided out of the pump housing 150 through the light guide column 113.

[0068] Figure 2 The internal structure of the inner electrical cavity and the structure of the signal light assembly are clearly shown. Figure 2 As shown, the front mounting seat 133 includes a light guide column mounting groove 330 with an upper opening and a light guide column locking piece 332 located above the light guide column mounting groove 330; the self-locking mechanism includes a locking block 134 formed on the light guide column 113 and an open locking groove 334 formed on the light guide column locking piece 332 and adapted to the locking block 134, wherein the locking block 134 is cylindrical in this embodiment. It should be understood that in the self-locking mechanism of this embodiment, the locking block 134 as a locking male body is adapted to the open locking groove 334 as a locking female body, but in other embodiments, the locking female body can also be formed on the light guide column 113, and the locking male body can be formed on the light guide column locking piece 332 to achieve locking matching.

[0069] like Figure 3 As shown, the left light guide column 113 is in a first state, i.e., an installed state or an unlocked state, while the right light guide column 113 is in a second state, i.e., a self-locking state. In this embodiment, the light guide column 113 is configured to be able to rotate between the second state and the first state. In the second state, the locking block 134 is engaged in the opening locking groove 334, so that the light guide column 113 is fixed in the front mounting seat 133. In the first state, the locking block 134 is located outside the opening locking groove 334, i.e., the two are not engaged with each other, so that the light guide column 113 can move forward and backward along the light guide column mounting groove 330.

[0070] like Figure 4 As shown, and refer to Figure 2 The light guide column installation slot 330 has an inner port (not shown), and the LED lamp 115 is arranged opposite to the inner port. The light guide column installation slot 330 is configured as a stepped slot and includes a small diameter hole 336, a medium diameter hole 337 and a large diameter hole 338. Figure 5 As shown, the light guide column 113 includes a small diameter section 136, a middle diameter section 137 and a large diameter section 138, wherein the small diameter section 136 is arranged corresponding to the size of the small diameter hole 336 and the inner port, the middle diameter section 137 is arranged corresponding to the size of the middle diameter hole 337, and is provided with a circumferential groove (not shown) for receiving the waterproof sealing ring 111, the large diameter section 138 is arranged corresponding to the size of the large diameter hole 338, and the front guide seat 153 is arranged to be suitable for receiving the large diameter section 138.

[0071] like Figure 4 and Figure 5 As shown, the mask 170 is located at the outer front side of the pump housing 150 and is clamped on the pump housing 150. The mask 170 is provided with a lamp eyelet 179 corresponding to the front guide seat 153. The light guide column 113 has a front gripper 114, which includes an inner stopper 117 and an outer lamp eyelet 119. The inner stopper 117 is located between the mask 170 and the front guide seat 153, and its size is larger than the outer lamp eyelet 119. The outer lamp eyelet 119 is received in the lamp eyelet 179. The front guide seat 153 has a guide channel 152 for receiving the light guide column 113, and the lamp eyelet 179 is arranged opposite to the guide channel 152.

[0072] like Figures 2 to 5 As shown, during assembly, the front gripper 114 of the light guide column 113 can be grasped to move the light guide column 113 to Figure 3 The first state shown on the left side is to insert the guide passage 152 of the front guide seat 153 of the pump housing 150 from the front end, and push it backward into the front mounting seat 133 of the pump inner housing 130, and continue to push backward along the light guide column mounting groove 330 of the front mounting seat 133 until the middle diameter section 137 of the light guide column 113 abuts against the shoulder (not shown) between the small diameter hole 336 and the middle diameter hole 337 of the light guide column mounting groove 330. At this time, the locking block 134 on the light guide column 113 just faces the opening of the open locking groove 334 of the light guide column locking piece 332. Then, the light guide column 113 is rotated so that the locking block 134 on it enters the open locking groove 334 and engages with the open locking groove 334, so that the light guide column 113 is fixed relative to the front mounting seat 133 of the pump inner housing 130, that is, entering the second state. Subsequently, the mask 170 is snapped onto the pump housing 150, thereby fixing the inner stop portion 117 of the front gripper 114 of the light guide column 113 between the mask 170 and the front guide seat 153, and the outer lamp eye 119 is just received in the lamp eye opening 179, so that the light of the LED lamp 115 can be transmitted through the light guide column 113, and the user can observe the light of the LED lamp 115 through the lamp eye opening 179 on the mask 170.

[0073] It should be noted that, in this embodiment, the circuit board 132 is configured to control the color change of the LED light 115 to display the working or fault signal of the household submersible pump through the light guide 113. For example, when the LED light is green, the pump is in a normal working state, and when the LED light is red, the pump is in a fault state, prompting the user to handle it.

[0074] In the present invention, since the LED lamp 115 and the circuit board 132 are integrally installed in the inner electrical cavity 131, and the waterproof sealing ring 111 is used, the IPX8 level waterproof between the light guide column 113 and the inner electrical cavity 131 can be achieved; the LED lamp 115 is installed in the closed inner electrical cavity 131, and the light is transmitted to the outside through the light guide column 113, which can effectively solve the problems of waterproofing and light display at the same time; the different size designs of the various parts of the light guide column 113 (the front gripper 114 The inner stopper 117, the large diameter section 138, the middle diameter section 137 and the small diameter section 136 form three waterproof lines (four waterproof lines if the waterproof sealing ring 111 is added) to make the waterproof effect stronger; the light guide column 113 is fixed to the front mounting seat 133 of the pump inner shell 130 through a self-locking mechanism (including a locking block 134 and an open locking groove 334), and the installation is achieved by plugging and turning; at the same time, the light guide column 113 is assisted in positioning by the pump outer shell 150 and the mask 170.

[0075] In addition, it should be noted that, although LED lamps are used as light sources in this embodiment, it should be understood that other light sources may be used.

[0076] like Figure 6 As shown, in this embodiment, a removable second filter screen 36 is also provided at the water inlet 32, and the second filter screen 36 is located outside the bottom of the water inlet 32, and the aperture of the filter hole 360 ​​on the second filter screen 36 is smaller than the aperture of the filter hole (not shown) on the first filter screen 34. Three slots 35 are provided at the bottom of the pump seat 3, and three buckles 37 matching the slots 35 are provided around the second filter screen, and three toggle ribs 39 are also provided on the second filter screen 36 for easy disassembly and assembly of the second filter screen 36, and these toggle ribs 39 are provided corresponding to the positions of the buckles 37.

[0077] In this embodiment, the aperture of the filter hole 360 ​​of the second filter 36 is 2 mm. In practical applications, the aperture of the filter hole 360 ​​of the second filter 36 can also be set to 3 mm or 4 mm. In addition, in practical applications, the slot 35, the buckle 37 and the driving rib 39 can also be set to two or four, or even more at the same time.

[0078] In this embodiment, since a removable second filter screen 36 is also provided at the water inlet 32, the second filter screen 36 is located on the outer side of the bottom of the water inlet 32, and the aperture of the filter hole 360 ​​on the second filter screen 36 is smaller than the aperture of the filter hole on the first filter screen 34, it can effectively block long strips or fibrous objects from entering the pump without affecting the performance of the pump; in addition, the second filter screen 36 is connected to the card slot 35 on the bottom of the pump seat 3 through the buckle 37, and the screw-free design allows the user to disassemble and clean it at any time, and the operation is simple and convenient.

[0079] like Figure 7 and Figure 8As shown, in this embodiment, the household submersible pump 100 further includes a quick connector device 4 for pluggable installation and removal of the water pipe. The quick connector device 4 is connected to the water outlet 30 of the pump seat 3. The quick connector device 4 includes a lock ring 43, a return spring 44 and a movable ring 45 which are sequentially sleeved on the water outlet 30, and also includes an elbow joint 47 with a sealing ring 46. A lock buckle 48 is provided on the lock ring 43, and an annular guide groove 49 matching the lock buckle 48 on the lock ring 43 is provided on the elbow joint 47. An opening 301 for the lock buckle 48 to radially pass through to enter the annular guide groove 49 is provided on the outer tube wall of the water outlet 30; the water outlet 30 is also provided with an annular stopper 310 for limiting the axial travel of the reset spring 44 on its outer tube wall, and a circle of elastic buckles 450 is provided on the inner ring of the movable ring 45, so that the reset spring 44 is positioned between the annular stopper 310 and the elastic buckle 450. In this way, when the movable ring 45 moves axially along the water outlet 30, the reset spring 44 can move between the locked position and the unlocked position as the distance between the annular stopper 310 and the elastic buckle 450 is adjusted. Among them, in the locked position, the reset spring 44 is in an extended reset state, and the lock buckle 48 on the lock ring 43 engages with the annular guide groove 49 on the elbow joint 47; in the unlocked position, the reset spring 44 is in a compressed state, and the lock buckle 48 on the lock ring 43 disengages from the annular guide groove 49 on the elbow joint 47 under the action of external force, so that the elbow joint 47 can be pulled out from the water outlet 30.

[0080] It should be noted that, although in the present embodiment, the elbow joint 47 is used as the joint, in practical applications, a straight pipe joint may also be used as the joint.

[0081] Reference below Figure 7 and Figure 8 The working principle of the quick connector device in this embodiment is introduced as follows:

[0082] Installation process of elbow joint 47: push the movable ring 45 toward the pump seat 3 to keep it in the unlocked position, and quickly insert the end of elbow joint 47 with sealing ring 46 into the water outlet 30, loosen the movable ring 45, and it is reset to the locked position under the action of reset spring 44, and the lock buckle 48 on the lock ring 43 is locked in the annular guide groove 49 on the elbow joint 47;

[0083] The disassembly process of the elbow joint 47 is as follows: push the movable ring 45 toward the direction of the pump seat 3, the movable ring 45 compresses the spring 44, and the elbow joint 47 is quickly and directly pulled outward. The lock buckle 48 on the locking ring 43 is disengaged from the annular guide groove 49 on the elbow joint 47 under the action of external force, and the elbow joint 47 and the pump seat 3 are separated. Release the movable ring 45, so that it automatically returns to the locked position under the action of the reset spring 44.

[0084] Since a quick connector device 4 for plugging and unplugging, installing and disassembling a water pipe is also provided at the water outlet 30 of the pump seat 3 in this embodiment, the user's installation and use troubles are completely solved, and all installation problems can be solved by plugging and unplugging; the threaded structure is eliminated, and the product qualification rate and production efficiency are greatly improved; in addition, an annular guide groove 49 matching the lock buckle 48 on the lock ring 43 is provided on the elbow joint 47, and the elbow joint 47 can be rotated for use in a sealed state.

[0085] like Figures 9 to 14 As shown, the household submersible pump of this embodiment further includes a water pump full-stance water level detection device 5 , which is installed at the bottom of the pump seat 3 and electrically connected to the circuit board 132 of the inner electrical cavity 131 .

[0086] like Fig. 9 , Fig.13 and Fig.14 As shown, and refer to Figures 10 to 12 The water pump full-stance water level detection device 5 includes a plastic bracket 50, a first probe 51, a second probe 52, a third probe 53 and a signal line 54. The plastic bracket 50 is provided with a main probe mounting seat 57 and a secondary probe mounting seat 59 at both ends thereof, wherein the first probe 51 and the second probe 52 are mounted on the main probe mounting seat 57, and the third probe 53 is mounted on the secondary probe mounting seat 59. One end of the signal line 54 is connected to the circuit board 132, and the other end is connected to the first probe 51, the second probe 52, and the third probe 53. That is, the first probe 51, the second probe 52, and the third probe 53 are electrically connected to the circuit board 132 via the signal line 54, respectively.

[0087] like Figures 9 to 12 As shown, and refer to Fig.13 and Fig.14 The first probe 51 and the second probe 52 on the main probe mounting seat 57 are arranged on one side of the water outlet 30 of the pump seat 3 (for example Fig.12 The third probe 53 located on the secondary probe mounting seat 59 is arranged on the other side of the water outlet 30 (eg Fig.12 center left).

[0088] like Fig.14 As shown, the length of the second probe 52 is less than that of the first probe 51, and the length of the first probe 51 is consistent with the length of the third probe 53. It should be understood that in this embodiment, the second probe 52 is used as a high water level probe, and the first probe 51 and the third probe 53 are used as low water level probes. Two low water level probes are provided and the two low water level probes are arranged on both sides of the water outlet, respectively, so as to ensure that the pump can be operated normally whether it is upright or not. Figures 10 to 12 Any of the dumping conditions shown can effectively prevent the pump from running without draining water, as described below.

[0089] When the household submersible pump of this embodiment is originally in a shutdown state:

[0090] If the first probe 51 and the second probe 52 are connected in series through water conduction, according to the prior art, that is, when there is no third probe 53, the pump should be immediately switched from the shutdown state to the startup state. However, in this embodiment, the circuit board 132 can control the pump not to start because the pump is likely to be, for example, Fig.11 The dumping state can avoid the pump from mistakenly starting to run without draining water. Fig.11 The water will be drained only when the water level in the dumping state exceeds the height of the impeller position in the dumping state;

[0091] If the first probe 51 and the third probe 53 are connected in series through water conduction, the circuit board 132 in this embodiment also controls not to start the pump, because these two probes are low water level probes and do not control the start of the pump;

[0092] If the second probe 52 and the third probe 53 are connected in series through water conduction, the circuit board 132 in this embodiment controls the pump to start, because whether the household submersible pump in this embodiment is in a normal upright state or in a Fig.10 and Fig.12 In such a dumping situation, the pump should be started to drain the water.

[0093] When the household submersible pump of this embodiment is originally in operation:

[0094] If the first probe 51 and the second probe 52 are suddenly disconnected, that is, the two are no longer connected in series through water conduction, according to the prior art, that is, without the third probe 53, the pump will immediately change from the running state to the shutdown state, but in this embodiment, the circuit board 132 can control the pump not to stop, because if the pump is still upright and not tilted at this time, it needs to continue to drain until the first probe 51, which is a low water level probe, can no longer detect the water level before it stops;

[0095] If the first probe 51 and the third probe 53 are suddenly disconnected, the circuit board 132 in this embodiment will control the pump to stop, because when the pump is in a normal upright state, if it is not stopped, it will cause idling;

[0096] If the second probe 52 and the third probe 53 are suddenly disconnected, that is, the two cannot be connected in series through water conduction, the circuit board 132 in this embodiment controls the pump to continue to operate without stopping, because whether the household submersible pump of this embodiment is in a normal upright state or in Figures 10 to 12 In such a dumping state, the drainage can continue to operate.

[0097] In this embodiment, the setting of the third probe 53 and its relative position arrangement with the first probe 51 enable the circuit board 132 to obtain reliable reference information for switching the pump between the shutdown state and the operating state, thereby ensuring that the household submersible pump of the present invention can maintain the correct working state whether it is in a normal standing state or a tilted state, that is, it continues to be shut down or running if it needs to maintain the state, and immediately switches from the shutdown state to the operating state or from the operating state to the shutdown state if it needs to change the state.

[0098] The technical content and technical features of the present invention have been disclosed above, but it is understood that under the creative ideas of the present invention, those skilled in the art can make various changes and improvements to the above structure, including the combination of technical features disclosed or claimed separately here, and other combinations that obviously include these features. These variations and / or combinations all fall within the technical field involved in the present invention and fall within the protection scope of the claims of the present invention.

Claims

1. A household submersible pump, characterized in that include: A pump seat is provided with a water outlet at the rear side and a water inlet at the bottom, and a first filter screen is provided in the pump seat directly opposite to the water inlet; The pump body comprises a pump inner shell and a pump outer shell, wherein the pump inner shell comprises an inner electrical cavity and a front mounting seat, wherein a circuit board is installed in the inner electrical cavity, and the pump outer shell comprises a front guide seat arranged corresponding to the position of the front mounting seat; A signal lamp assembly, comprising a signal lamp and a light guide column with a waterproof sealing ring embedded thereon, the signal lamp is connected to the circuit board, the light guide column is configured to be able to rotate from a first state of penetrating the front guide seat and inserting into the front mounting seat to a second state of being locked in the front mounting seat, and is configured to be able to guide the light of the signal lamp to the outside of the pump housing; wherein, The light guide column is locked in the front mounting seat in the second state by means of a self-locking mechanism, the self-locking mechanism comprising a first locking member and a second locking member, the first locking member being a locking male body or a locking female body formed on the light guide column, and the second locking member being a locking female body or a locking male body formed on the front mounting seat; The front mounting seat includes a light guide column mounting groove with an upper opening and a light guide column locking plate located above the light guide column mounting groove, the first locking member is a locking block formed on the light guide column, and the second locking member is an open locking groove formed on the light guide column locking plate and adapted to the locking block, in the first state, the locking block is located outside the open locking groove and the light guide column can move back and forth along the light guide column mounting groove, and in the second state, the locking block is engaged in the open locking groove so that the light guide column is locked in the front mounting seat.

2. The household submersible pump according to claim 1, characterized in that The light guide column installation groove has an inner port, and the signal light is arranged opposite to the inner port.

3. The household submersible pump as claimed in claim 2, characterized in that The light guide column installation groove is a stepped groove, which includes a small diameter hole, a medium diameter hole and a large diameter hole. Correspondingly, the light guide column includes a small diameter section, a medium diameter section and a large diameter section, wherein the small diameter section is arranged corresponding to the size of the small diameter hole and the inner port, the medium diameter section is arranged corresponding to the size of the medium diameter hole, and a circumferential groove for receiving the waterproof sealing ring is arranged on the medium diameter section, the large diameter section is arranged corresponding to the size of the large diameter hole, and the front guide seat is arranged to be suitable for receiving the large diameter section.

4. The household submersible pump as claimed in claim 3, characterized in that The pump body also includes a mask clamped on the outer front side of the pump shell, and a lamp eye opening is arranged on the mask corresponding to the front guide seat. The light guide column has a front gripper, which includes an outer lamp eye and an inner stopper larger than the outer lamp eye. The inner stopper is located between the mask and the front guide seat, and the outer lamp eye is received in the lamp eye opening.

5. The household submersible pump as claimed in claim 4, characterized in that The front guide seat has a guide channel for receiving the light guide column, and the lamp eye is arranged opposite to the guide channel.

6. A household submersible pump as claimed in any one of claims 1 to 5, characterized in that A second filter is also provided at the water inlet, and the second filter is detachably mounted on the bottom of the water inlet outside the first filter, and the aperture of the filter holes provided on the second filter is smaller than the aperture of the filter holes provided on the first filter.

7. A household submersible pump as claimed in any one of claims 1 to 5, characterized in that The water outlet is connected to a quick connector device for pluggable installation and disassembly of the water pipe. The quick connector device includes a locking ring, a return spring and a movable ring which are sequentially sleeved on the water outlet, and also includes a connector with a sealing ring.

8. A household submersible pump as claimed in any one of claims 1 to 5, characterized in that , also includes a water pump full-stance water level detection device, which is installed at the bottom of the pump seat and electrically connected to the circuit board, wherein the water pump full-stance water level detection device includes a first probe, a second probe, and a third probe, wherein the first probe and the second probe are located on one side of the water outlet, and the third probe is located on the other side of the water outlet, the length of the second probe is smaller than the first probe, and the lengths of the first probe and the third probe are the same.

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