Self-priming pump and water purifier comprising same

Abstract

The utility model provides a self-priming pump and a water purifier comprising the same. The self-priming pump comprises a pump head, a motor, a first transmission rod, a second transmission rod, a shaft sleeve, a magnet and a coil, the first transmission rod and the second transmission rod are arranged at intervals in the axial direction of the first transmission rod. The end, close to the first transmission rod, of the second transmission rod in the axial direction of the first transmission rod is connected with the shaft sleeve, and the end, close to the second transmission rod, of the first transmission rod in the axial direction of the first transmission rod extends into the shaft sleeve. One of the magnet and the coil is arranged in the shaft sleeve and connected to the peripheral side wall of the first transmission rod, and the other one of the magnet and the coil is arranged on the peripheral side wall of the shaft sleeve. The water purifier comprises the self-priming pump. The pump head and the motor are connected to the first transmission rod and the second transmission rod respectively. The transmission rod between the motor and the pump head is divided into the first transmission rod and the second transmission rod, and indirect transmission between the motor and the pump head is achieved through interaction of the magnetism of the electrified coil and the magnetic field of the magnet.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifier field, especially including its water purifier of a kind of self-priming pump. BACKGROUND

[0002] Water purification equipment is widely popular in rural areas, especially in poor water quality rural areas, water purifier motor burnout is not uncommon, this phenomenon is mainly due to the pump head of water purifier is blocked. At present, most of the water purifiers on the market adopt the direct connection transmission mode of motor and pump head, when the water source contains a large amount of silt, rust and other impurities, these pollutants will gradually accumulate on the surface of the membrane element in the pump head, forming a blocked layer. With the aggravation of the blockage, the internal pressure of the pump head continues to rise, resulting in the motor running in locked-rotor state for a long time. More seriously, when the pump head is completely blocked, the pump head stops rotating while the motor is still running under rotating load, a large amount of heat generated cannot be dissipated in time, causing the motor coil temperature to rise sharply, and finally burned due to overheating. This failure not only affects the normal use of water by users, but also increases the equipment maintenance cost. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defect that the motor is easy to burn when the pump head is blocked in the prior art, and to provide a self-priming pump and a water purifier comprising the same.

[0004] The utility model solves the above technical problems by the following technical scheme:

[0005] The utility model provides a kind of self-priming pump, it includes pump head, motor, first transmission rod, second transmission rod, shaft sleeve, magnet and coil;The axis of the first transmission rod and the second transmission rod is parallel, the first transmission rod and the second transmission rod are spaced apart along the axial direction of the first transmission rod;The second transmission rod is connected with the shaft sleeve at one end close to the first transmission rod in the axial direction of the first transmission rod, and the first transmission rod is inserted into the shaft sleeve at one end close to the second transmission rod in the axial direction of the first transmission rod;One of the magnet and the coil is arranged in the shaft sleeve and connected to the circumferential wall of the first transmission rod, and the other of the magnet and the coil is arranged on the circumferential wall of the shaft sleeve, the projection of the magnet along the radial direction of the first transmission rod on the coil at least partially overlaps the coil;One of the pump head and the motor is connected to one end of the first transmission rod away from the second transmission rod in the axial direction of the first transmission rod, and the other of the pump head and the motor is connected to one end of the second transmission rod away from the first transmission rod in the axial direction of the first transmission rod.

[0006] In the present scheme, the transmission rod between the motor and the pump head is split into a first transmission rod and a second transmission rod, and through the magnets and coils arranged on the first transmission rod and the second transmission rod, an electric current is generated by cutting the magnetic field of the magnet with the coil, the charged coil generates magnetism, and the magnetism of the charged coil interacts with the magnetic field of the magnet to achieve indirect transmission between the motor and the pump head. With such a structure, when the pump head is blocked, since there is no physical connection between the pump head and the motor, even if the pump head cannot rotate under the condition of blockage, it will not affect the rotation of the motor itself, and the motor can normally rotate under the condition of pump head blockage to reduce the risk of motor burnout.

[0007] Preferably, the projection of the magnet on the coil along the first transmission rod is completely coincident with the coil.

[0008] In the present scheme, the magnet directly opposite the coil has the highest interaction efficiency, which can improve the transmission efficiency between the first transmission rod and the second transmission rod.

[0009] Preferably, the number of magnets is multiple, and the multiple magnets are arranged in a circumferential direction around the first transmission rod; and / or, the number of coils is multiple, and the multiple coils are arranged in a circumferential direction along the first transmission rod.

[0010] In the present scheme, arranging multiple magnets and multiple coils can increase the strength of the interaction between the magnets and the coils, thereby improving the transmission efficiency.

[0011] Preferably, the self-priming pump further comprises an annular support, the annular support is at least partially arranged inside the shaft sleeve, the annular support is arranged on the outer periphery of the first transmission rod and is fixedly connected with the first transmission rod, and one of the magnet and the coil is arranged on the circumferential wall of the annular support.

[0012] In the present scheme, the annular support can raise the height of the magnet or the coil from the inside of the shaft sleeve, reduce the distance between the magnet and the coil, and make the distance between the magnet and the coil closer and the magnetic interaction stronger.

[0013] Preferably, the magnet is connected to the circumferential wall of the first transmission rod, and the coil is arranged on the circumferential wall of the shaft sleeve.

[0014] In the present scheme, by connecting the magnet with the first transmission rod, since the magnet has natural magnetism, even if the liquid in the pump head enters the magnetic interaction area, the influence of the liquid on the magnetic interaction between the magnet and the coil will be reduced.

[0015] Preferably, the self-priming pump further includes a sealing sleeve connected to one axial end of the pump head on the first drive rod. The sealing sleeve and the pump head form a sealed space for accommodating the first drive rod and the magnet, and the coil is disposed outside the sealed space.

[0016] In this design, a sealing sleeve is installed to prevent liquid from the pump head from entering the magnet and coil areas and affecting their mutual magnetic force.

[0017] Preferably, the sealing sleeve has a groove on the side of the first transmission rod facing the pump head in the axial direction. The self-priming pump also includes a sealing ring, which is disposed in the groove. The two ends of the sealing ring in the axial direction of the first transmission rod abut against the outer wall of the pump head and the bottom of the groove, respectively.

[0018] In this design, the fit between the sealing ring and the groove of the sealing sleeve further prevents liquid in the pump head from entering the magnet and coil area.

[0019] Preferably, the bushing is keyed to the first transmission rod, or the bushing is keyed to the second transmission rod.

[0020] In this design, keyed connections can withstand larger loads and reduce assembly errors.

[0021] Preferably, the self-priming pump further includes a pressure regulating valve for adjusting the outlet water pressure value of the self-priming pump.

[0022] In this solution, a pressure regulating valve is installed to control the pressure of the water outlet from the pump head to meet the needs under different conditions.

[0023] This utility model also provides a water purifier, which includes the self-priming pump described above.

[0024] In this design, the transmission rod between the motor and the pump head is split into a first transmission rod and a second transmission rod. Magnets and coils are respectively mounted on the first and second transmission rods. The coil cuts the magnetic field of the magnet to generate current, causing the energized coil to become magnetic. The interaction between the magnetic field of the energized coil and the magnetic field of the magnet achieves indirect transmission between the motor and the pump head. With this structure, when the pump head is blocked, since there is no physical connection between the pump head and the motor, even if the pump head cannot rotate due to blockage, it will not affect the rotation of the motor itself. The motor can rotate normally even when the pump head is blocked, thus reducing the risk of motor burnout.

[0025] The positive and progressive effects of this utility model are as follows:

[0026] This invention relates to a self-priming pump and a water purifier including the same. The transmission rod between the motor and the pump head is divided into a first transmission rod and a second transmission rod. Magnets and coils are respectively mounted on the first and second transmission rods. The coil cuts the magnetic field of the magnet to generate current, causing the charged coil to become magnetic. The interaction between the magnetic field of the charged coil and the magnetic field of the magnet achieves indirect transmission between the motor and the pump head. With this structure, when the pump head is blocked, since there is no physical connection between the pump head and the motor, even if the pump head cannot rotate due to blockage, it will not affect the rotation of the motor itself. The motor can rotate normally even when the pump head is blocked, thus reducing the risk of motor burnout. Attached Figure Description

[0027] Figure 1 This is a perspective view of the self-priming pump according to an embodiment of the present invention.

[0028] Figure 2 This is a side sectional view of the self-priming pump according to an embodiment of the present invention.

[0029] Figure 3 This is a partially enlarged cross-sectional view of the self-priming pump according to an embodiment of the present invention.

[0030] Figure 4 This is a front sectional view of the self-priming pump according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures:

[0032] Self-priming pump 100

[0033] Pump head 1

[0034] Motor 2

[0035] First transmission rod 3

[0036] Second transmission rod 4

[0037] Bushing 5

[0038] Magnet 6

[0039] Coil 7

[0040] Circular support 8

[0041] Sealing sleeve 9

[0042] Sealing ring 10

[0043] Pressure regulating valve 11 Detailed Implementation

[0044] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0045] This embodiment provides a water purifier, including a self-priming pump 100. For example...Figures 1-4 As shown, the self-priming pump 100 includes a pump head 1, a motor 2, a first transmission rod 3, a second transmission rod 4, a bushing 5, a magnet 6, and a coil 7. The axes of the first transmission rod 3 and the second transmission rod 4 are parallel, and the first transmission rod 3 and the second transmission rod 4 are spaced apart along the axial direction of the first transmission rod 3. The axial spacing of the first transmission rod 3 and the second transmission rod 4 means that their ends are opposite and their axes coincide. The end of the second transmission rod 4 closest to the first transmission rod 3 in the axial direction is connected to the bushing 5, and the end of the first transmission rod 3 closest to the second transmission rod 4 in the axial direction extends into the bushing 5.

[0046] There are two ways to connect the first transmission rod 3 and the second transmission rod 4:

[0047] This embodiment is the first type. The magnet 6 is disposed inside the bushing 5 and connected to the peripheral wall of the first transmission rod 3. The coil 7 is disposed on the peripheral wall of the bushing 5. The projection of the magnet 6 radially along the first transmission rod 3 onto the coil 7 at least partially coincides with the coil 7. The end of the first transmission rod 3 axially away from the second transmission rod 4 is connected to the pump head 1, and the end of the second transmission rod 4 axially away from the first transmission rod 3 is connected to the motor 2. Figure 4 As shown, the projection of magnet 6 along the radial direction of the first transmission rod 3 onto coil 7 completely coincides with coil 7. The interaction between magnet 6 and coil 7 is most efficient, which can improve the transmission efficiency between the first transmission rod 3 and the second transmission rod 4.

[0048] Another embodiment can be a second type, in which the coil 7 is disposed inside the bushing 5 and connected to the peripheral wall of the first transmission rod 3, the magnet 6 is disposed on the peripheral wall of the bushing 5, and the projection of the coil 7 on the magnet 6 along the radial direction of the first transmission rod 3 at least partially coincides with the magnet 6; the end of the first transmission rod 3 away from the second transmission rod 4 in the axial direction of the first transmission rod 3 is connected to the pump head 1, and the end of the second transmission rod 4 away from the first transmission rod 3 in the axial direction of the first transmission rod 3 is connected to the motor 2.

[0049] Thus, the transmission rod between motor 2 and pump head 1 is split into a first transmission rod 3 and a second transmission rod 4. Magnets 6 and coils 7 are respectively located on the first transmission rod 3 and the second transmission rod 4. The coil 7 cuts the magnetic field of magnet 6 to generate current, causing the energized coil 7 to become magnetic. The magnetic field of the energized coil 7 interacts with the magnetic field of magnet 6, thereby achieving indirect transmission between motor 2 and pump head 1. With this structure, when pump head 1 is blocked, since there is no physical connection between pump head 1 and motor 2, even if pump head 1 cannot rotate due to blockage, it will not affect the rotation of motor 2 itself. Motor 2 can rotate normally even when pump head 1 is blocked, thus reducing the risk of motor 2 burning out.

[0050] Specifically, in this embodiment, there are multiple magnets 6 and multiple coils 7. The multiple magnets 6 are arranged circumferentially around the sidewall of the first transmission rod 3 or circumferentially along the sidewall of the bushing 5. The multiple coils 7 are arranged circumferentially around the sidewall of the first transmission rod 3 or circumferentially along the sidewall of the bushing 5.

[0051] In other embodiments, the number of magnets 6 may be multiple, and the multiple magnets 6 may be arranged circumferentially around the circumferential sidewall of the first transmission rod 3 or circumferentially along the circumferential sidewall of the bushing 5.

[0052] In other embodiments, the number of coils 7 may be multiple, with multiple coils 7 arranged circumferentially around the circumferential sidewall of the first transmission rod 3 or circumferentially spaced along the circumferential sidewall of the bushing 5.

[0053] Thus, setting multiple magnets 6 and multiple coils 7 can increase the strength of the interaction between the magnets 6 and the coils 7, thereby improving the transmission efficiency.

[0054] In this embodiment, as Figure 4 As shown, there are 18 magnets 6 and 18 coils 7, but the number of magnets 6 and coils 7 is only for illustrative purposes and is not limited in this embodiment. The arrangement is that 18 magnets 6 are arranged circumferentially around the sidewall of the first transmission rod 3, and 18 coils 7 are arranged circumferentially around the sidewall of the first transmission rod 3.

[0055] Specifically, such as Figure 2 and Figure 3 As shown, the self-priming pump 100 also includes an annular bracket 8, which is at least partially disposed inside the bushing 5. The annular bracket 8 is sleeved on the outer periphery of the first transmission rod 3 and fixedly connected to the first transmission rod 3. One of the magnet 6 and the coil 7 is disposed on the peripheral sidewall of the annular bracket 8.

[0056] In this way, the ring bracket 8 can raise the height of the magnet 6 or the coil 7 from inside the bushing 5, reduce the distance between the magnet 6 and the coil 7, and thus make the magnet 6 and the coil 7 closer together and the magnetic interaction stronger.

[0057] In this embodiment, magnet 6 is disposed on the peripheral wall of annular support 8, and coil 7 is disposed on the peripheral wall of bushing 5. Magnet 6 is connected to the first transmission rod 3. Because magnet 6 has natural magnetism, even if liquid from pump head 1 enters the magnetic action area, the influence of the liquid on the magnetic interaction between magnet 6 and coil 7 will be reduced.

[0058] Specifically, such as Figure 2 and Figure 3As shown, the self-priming pump 100 also includes a sealing sleeve 9, which is connected to the pump head 1 at one axial end of the first transmission rod 3. The sealing sleeve 9 and the pump head 1 form a sealed space for accommodating the first transmission rod 3 and the magnet 6. The coil 7 is located outside the sealed space.

[0059] Thus, the sealing sleeve 9 is set to prevent liquid in the pump head 1 from entering the area of ​​the magnet 6 and the coil 7 and affecting the mutual magnetic force.

[0060] In this embodiment, the sealing sleeve 9 has a groove on the side of the first transmission rod 3 facing the pump head 1 in the axial direction. The self-priming pump 100 also includes a sealing ring 10, which is disposed in the groove. The two ends of the sealing ring 10 in the axial direction of the first transmission rod 3 respectively abut against the outer wall of the pump head 1 and the bottom of the groove.

[0061] Specifically, the bushing 5 is keyed to the first transmission rod 3, or the bushing 5 is keyed to the second transmission rod 4.

[0062] In this way, keyed connections can withstand larger loads and reduce assembly errors.

[0063] In this embodiment, the bushing 5 is disposed on the second transmission rod 4, and the key connection includes a key body, a first keyway and a second keyway. The bushing 5 is provided with a first keyway, the second transmission rod 4 is provided with a second keyway, and the key body is disposed in both the first keyway and the second keyway.

[0064] Specifically, such as Figure 1 As shown, the self-priming pump 100 also includes a pressure regulating valve 11, which is used to adjust the outlet water pressure of the self-priming pump 100.

[0065] Thus, by setting the pressure regulating valve 11, the pressure value of the water outlet of the pump head 1 can be controlled to meet the needs under different conditions.

[0066] In this embodiment, the pressure regulating valve 11 is connected to the motor 2, and the output power of the motor 2 is controlled to regulate the water pressure of the pump head 1. The structure and principle of the pressure regulating valve 11 are prior art and will not be discussed further here.

[0067] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A self-priming pump characterized by, It comprises a pump head, a motor, a first transmission rod, a second transmission rod, a shaft sleeve, a magnet and a coil; the first transmission rod and the second transmission rod are parallel in axis, and the first transmission rod and the second transmission rod are arranged in the axial direction of the first transmission rod; One of the magnet and the coil is arranged in the shaft sleeve and connected to the circumferential wall of the first transmission rod, and the other of the magnet and the coil is arranged on the circumferential wall of the shaft sleeve; the projection of the magnet on the coil in the radial direction of the first transmission rod at least partially overlaps the coil. The other of the pump head and the motor is connected to the end of the second transmission rod away from the first transmission rod in the axial direction of the first transmission rod.

2. The self-priming pump of claim 1, wherein The projection of the magnet on the coil in the radial direction of the first transmission rod completely overlaps the coil.

3. The self-priming pump of claim 1 or 2, wherein The number of the magnets is multiple, and the multiple magnets are arranged in the circumferential direction of the first transmission rod. The number of the coils is multiple, and the multiple coils are arranged in the circumferential direction of the first transmission rod.

4. The self-priming pump of claim 1, wherein The self-priming pump further comprises an annular support arranged at least partially in the interior of the shaft sleeve, the annular support is sleeved on the outer periphery of the first transmission rod and fixedly connected to the first transmission rod, and one of the magnet and the coil is arranged on the circumferential wall of the annular support.

5. The self-priming pump of claim 1, wherein The magnet is connected to the circumferential wall of the first transmission rod, and the coil is arranged on the circumferential wall of the shaft sleeve.

6. The self-priming pump of claim 5, wherein The self-priming pump further comprises a sealing sleeve connected to the end of the pump head in the axial direction of the first transmission rod, the sealing sleeve and the pump head form a sealing space for accommodating the first transmission rod and the magnet, and the coil is arranged outside the sealing space.

7. The self-priming pump of claim 6, wherein The sealing sleeve is provided with a groove on the side thereof in the axial direction of the first transmission rod and facing the pump head, and the self-priming pump further comprises a sealing ring arranged in the groove, and the two ends of the sealing ring in the axial direction of the first transmission rod respectively abut against the outer wall of the pump head and the groove bottom.

8. The self-priming pump of claim 1, wherein The shaft sleeve is keyed to the first transmission rod, or the shaft sleeve is keyed to the second transmission rod.

9. The self-priming pump of claim 1, wherein The self-priming pump further comprises a pressure regulating valve for adjusting the water outlet pressure value of the self-priming pump.

10. A water purifier characterized by comprising: The self-priming pump comprises the self-priming pump according to any one of claims 1-9.

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