Motor pump with long service life in high-load state

Abstract

The utility model discloses a long-life motor pump under the high load state, including: shell subassembly, pump water piece, transmission subassembly and drive piece, shell subassembly includes water inlet and outlet cover and shell, the water inlet and outlet cover is provided on the one end of shell, and the water inlet and outlet cover is provided with double-headed water nozzle, the drive piece is provided with the drive piece, the drive piece is provided with the drive piece. A water inlet and a water outlet are formed in the double-end water nozzle, the water pumping piece is arranged on the shell and used for pumping liquid in from the water inlet and pressing the liquid out from the water outlet, the transmission assembly comprises an impeller, a bearing and an eccentric wheel which are sequentially arranged, the impeller is connected with the water pumping piece, and the bearing is connected with the eccentric wheel. The eccentric wheel is sleeved with the bearing, the bearing is sleeved with the impeller, and the driving piece is used for controlling the transmission assembly to drive the water pumping piece to work. According to the motor pump, the bearing is arranged to replace a central spindle to solve the phenomenon that the impeller and the eccentric wheel are worn through after long-term use, and the service life of the motor pump is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a motor pump with a long service life under a high load state. Background Art

[0002] Water pumps are mechanical devices used to transport liquids and are widely used in various mechanical devices that require water, such as coffee machines and soymilk makers. However, due to the different designs of different equipment manufacturers, separate switches are often used to control the equipment for ease of use. This means that the power switch controls the operation of the entire device (including the water pump), and an additional water outlet switch is provided to control the water output.

[0003] The water pump in the prior art is provided with a motor, an impeller and an eccentric wheel. The connection between the impeller and the eccentric wheel adopts the impeller-shaft-eccentric wheel connection method. The motor controls the rotation of the eccentric wheel to drive the shaft core and the eccentric wheel to rotate. When the water outlet end of the water pump has back pressure, the pressure in the piston cavity of the water pump increases. After working for a period of time, the shaft core will wear through the eccentric wheel, and the eccentric wheel assembly hole will be deformed. It is not suitable for working under high load conditions. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a motor pump with a long life under high load conditions.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A motor pump with a long life under high load conditions includes: a shell assembly, a water pumping component, a transmission assembly and a driving component, the shell assembly includes an inlet and outlet water cover and a shell, the inlet and outlet water cover is arranged on one end of the shell, and the inlet and outlet water cover is provided with a double-headed water nozzle, the double-headed water nozzle is provided with a water inlet and a water outlet, the water pumping component is arranged on the shell, the water pumping component is used to pump liquid into the water inlet and press it out from the water outlet, the transmission assembly includes an impeller, a bearing and an eccentric wheel arranged in sequence, the impeller is connected to the water pumping component, the bearing is sleeved on the eccentric wheel and the impeller is sleeved outside the bearing, and the driving component is used to control the transmission assembly to drive the water pumping component to work.

[0007] In one embodiment, the shell includes a diverter plate, a middle shell and a bottom shell arranged in sequence, and the water inlet and outlet cover, the diverter plate, the middle shell and the bottom shell are connected and fixed in sequence.

[0008] In one embodiment, bolts are provided between the water inlet and outlet cover, the diverter plate, the middle shell and the bottom shell, and the bolts pass through the water inlet and outlet cover, the diverter plate, the middle shell and the bottom shell in sequence from the outside of the water inlet and outlet cover.

[0009] In one embodiment, the water inlet and outlet cover is located at one end of the diverter plate, and the water inlet and outlet cover is clamped with the diverter plate, and a water inlet cavity and a water outlet cavity are formed between the diverter plate and the water inlet and outlet cover, which are respectively connected to the water inlet and the water outlet.

[0010] In one embodiment, an umbrella valve and a triangular valve are further provided on the diverter plate. The umbrella valve is used to block and connect the water pump component and the water inlet chamber, and the triangular valve is used to block and connect the water pump component and the water outlet chamber.

[0011] In one embodiment, a raised external protrusion block is provided on one side of the diverter plate near the outer edge, and the external protrusion block is provided along the circumferential direction of the diverter plate. An external boss for abutting against the external protrusion block is provided on one side of the water inlet and outlet cover, and the external boss abuts against the external protrusion block. An installation groove is provided on the external protrusion block along the circumferential direction, and a sealing ring is provided in the installation groove, and the sealing ring abuts against the water inlet and outlet cover.

[0012] In one embodiment, the diverter disc is further provided with an inner protrusion block on the side facing the water inlet and outlet cover, and the inner protrusion block is arranged along the circumferential direction of the diverter disc, and the water inlet and outlet cover is provided with an inner boss relative to the inner protrusion block, and the inner boss abuts against the inner protrusion block, and an annular groove is opened on the inner boss along the circumferential direction, a sealing gasket is placed in the annular groove, and the sealing gasket abuts against the inner protrusion block.

[0013] In one embodiment, the water pumping component is a three-hole piston, and a plurality of piston cavities are formed on the three-hole piston, and the opening side of each piston cavity is respectively abutted against the side of the diverter plate away from the water inlet and outlet cover.

[0014] In one embodiment, a plurality of the piston chambers are provided with piston columns, the impeller is provided with a through-hole for the piston column to pass through, the piston column on each of the piston chambers passes through the through-hole on the impeller respectively, and the driving member is used to drive the impeller to move each of the piston chambers.

[0015] In one embodiment, the driving member is a motor, which is screwed and fixed to one end of the bottom shell away from the middle shell, and the output shaft of the motor extends into the bottom shell and is connected to the eccentric wheel.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] 1. The utility model provides a motor pump with a long life under high load conditions. A bearing is provided instead of a shaft core to connect the impeller and the eccentric wheel. This solves the problem in the prior art where the impeller and the eccentric wheel are connected by an inclined shaft core, which may wear through the eccentric wheel. The use of the bearing can make the rotation of the impeller and the eccentric wheel more stable, and the bearing will not cause the impeller and the eccentric wheel to deform or wear through under long-term rotation. Therefore, the motor pump using this transmission assembly is suitable for operation under high load conditions.

[0018] 2. When the motor pump with a long life under high load state of the utility model works, the rotation of the motor drives the eccentric wheel to rotate, the eccentric wheel is connected to the bearing, and the bearing is connected to the impeller to form a reciprocating motion mechanism. The motor rotates one circle, the impeller swings back and forth one circle, the impeller is connected to the three-hole piston, the impeller swings back and forth one circle, the volume of the three-hole piston changes once, the volume of the piston cavity in the three-hole piston increases, the liquid enters the three-hole piston from the water inlet, and when the volume of the piston cavity decreases, the liquid flows out from the water outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments.

[0020] Figure 1 This is a schematic diagram of the overall structure of a motor pump with a long life under high load conditions provided by the utility model;

[0021] Figure 2 This is a schematic diagram of the explosion structure of a motor pump with a long life under high load conditions provided by the utility model;

[0022] Figure 3 This is a schematic cross-sectional view of a motor pump with a long life under high load conditions provided by the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the assembly of the water pump components and the transmission components in a motor pump with a long life under high load conditions provided by the utility model;

[0024] Figure 5 This is a schematic structural diagram of a transmission assembly in a motor pump with a long life under high load conditions provided by the utility model.

[0025] Description of the drawings: 10. Outer shell assembly; 11. Water inlet and outlet cover; 111. Double-headed faucet; 1111. Water inlet; 1112. Water outlet; 112. Outer boss; 113. Inner boss; 1131. Annular groove; 114. Sealing gasket; 12. Shell; 121. Diverter plate; 1211. Water inlet chamber; 1212. Water outlet chamber; 1213. Outer boss; 12131. Mounting groove; 1214. Inner boss; 1215. Sealing ring; 122. Middle shell; 123. Bottom shell; 20. Transmission assembly; 30. Bolt; 40. Umbrella valve; 50. Triangle valve; 60. Three-hole piston; 61. Piston chamber; 62. Piston column; 70. Impeller; 71. Perforation; 80. Bearing; 90. Eccentric wheel; 100. Motor. DETAILED DESCRIPTION

[0026] In order to facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0027] A motor pump with long life under high load conditions, refer to Figure 1 and Figure 2 The invention comprises a housing assembly 10, a water pumping unit, a transmission assembly 20, and a driving unit. The housing assembly 10 comprises an inlet and outlet cover 11 and a housing 12. The inlet and outlet cover 11 is arranged on one end of the housing 12. The inlet and outlet cover 11 is provided with a double-ended water spout 111. The double-ended water spout 111 is provided with a water inlet 1111 and a water outlet 1112. Both the water inlet 1111 and the water outlet 1112 are in communication with the interior of the housing 12. The water pumping unit is arranged on the housing 12 and is used to pump liquid in from the water inlet 1111 and press it out from the water outlet 1112. The driving unit is used to control the transmission assembly 20 to drive the water pumping unit to operate, thereby completing the operation of pumping in and pressing out liquid.

[0028] Further, refer to Figure 2 and Figure 3The shell 12 includes a diverter plate 121, a middle shell 122 and a bottom shell 123 arranged in sequence. The water inlet and outlet cover 11 is located at one end of the diverter plate 121. The water inlet and outlet cover 11, the diverter plate 121, the middle shell 122 and the bottom shell 123 are connected and fixed in sequence. It should be noted that in this embodiment, bolts 30 are passed through the water inlet and outlet cover 11, the diverter plate 121, the middle shell 122 and the bottom shell 123. The bolts 30 pass through the water inlet and outlet cover 11, the diverter plate 121, the middle shell 122 and the bottom shell 123 from the outside of the water inlet and outlet cover 11 in sequence to achieve screw connection and fixation of the various parts of the shell 12, thereby forming the overall shell of the motor 100 pump. It should be noted that a screw column is provided in the shell 12. The screw column is located on the side close to the inner wall of the shell 12. The screw column is arranged along the length direction of the shell 12. The bolts 30 penetrate into the shell 12 from one side of the water inlet and outlet cover 11 and are passed through the screw column. The inner wall of the screw column is provided with a thread that is threadedly connected to the bolt 30. The bolt 30 is threadedly connected to the thread of the inner wall of the screw column to screw and fix the water inlet and outlet cover 11, the diverter plate 121, the middle shell 122 and the bottom shell 123.

[0029] Further, refer to Figure 3 The diverter disc 121 is engaged with the water inlet and outlet cover 11, forming a water inlet chamber 1211 and a water outlet chamber 1212, which are connected to the water inlet 1111 and the water outlet 1112, respectively. The diverter disc 121 is also provided with an umbrella valve 40 and a triangular valve 50. The umbrella valve 40 is used to block and connect the water pump component to the water inlet chamber 1211, while the triangular valve 50 is used to block and connect the water pump component to the water outlet chamber 1212.

[0030] Reference Figure 3 It should be noted that the diverter disc 121 is fixedly secured to the water inlet and outlet cover 11. A raised external protrusion 1213 is provided on one side of the diverter disc 121 near the outer edge. The external protrusion 1213 is arranged along the circumferential direction of the diverter disc 121. An external boss 112 is provided on one side of the water inlet and outlet cover 11 to abut against the protrusion of the diverter disc 121. The external boss 112 abuts against the external protrusion 1213. A mounting groove 12131 is provided on the external protrusion 1213 of the diverter disc 121. The mounting groove 12131 is provided along the circumferential direction of the external protrusion 1213. A sealing ring 1215 is provided in the mounting groove 12131. The sealing ring 1215 is arranged in an annular shape and is installed in the mounting groove 12131 along the circumferential direction of the external protrusion 1213. The side of the sealing ring 1215 away from the outer protruding block 1213 abuts against the water inlet and outlet cover 11, so that a sealing structure is formed between the water inlet and outlet cover 11 and the diverter plate 121, thereby ensuring the sealing of the motor 100 pump.

[0031] Further, refer to Figure 3An inner protrusion 1214 is also provided on the side of the diverter disc 121 facing the water inlet and outlet cover 11. The inner protrusion 1214 is arranged in a protruding shape toward the end closest to the water inlet and outlet cover 11 and is arranged along the circumferential direction of the diverter disc 121. The water inlet and outlet cover 11 is provided with an inner boss 113 opposite to the inner protrusion 1214. The inner boss 113 of the water inlet and outlet cover 11 abuts the inner protrusion 1214 of the diverter disc 121. An annular groove 1131 is formed on the inner boss 113 of the water inlet and outlet cover 11. The annular groove 1131 extends along the circumferential direction of the inner boss 113. A sealing gasket 114 is disposed in the annular groove 1131 for sealing. The sealing gasket 114 is arranged in an annular shape and abuts the inner protrusion 1214 of the diverter disc 121. When installing the diverter plate 121 and the water inlet and outlet cover 11, the outer protrusion 1213 is first abutted against the outer boss 112, and the inner protrusion 1214 is abutted against the inner boss 113. Bolts 30 are then passed from one end of the water inlet and outlet cover 11 through the water inlet and outlet cover 11, the diverter plate 121, the middle shell 122, and the bottom shell 123 to secure the connection. The sealing ring 1215 and the gasket 114 ensure a tight seal between the diverter plate 121 and the water inlet and outlet cover 11.

[0032] Further, refer to Figure 2 and Figure 3 The umbrella valve 40 provided on the diverter plate 121 is located in the water inlet chamber 1211. The umbrella valve 40 is a one-way valve that can block and connect the water pump component and the water inlet chamber 1211. The triangular valve 50 is located at the water outlet chamber 1212 of the diverter plate 121. The triangular valve 50 is also a one-way valve that can block and connect the water pump component and the water inlet chamber 1211.

[0033] Reference Figure 3 and Figure 4 The pumping element is a three-hole piston 60 with multiple piston chambers 61 defined therein. The opening of each piston chamber 61 abuts against the side of the diverter plate 121 away from the water inlet and outlet cover 11. The three-hole piston 60 is connected to the transmission assembly 20, which is then connected to a drive element. The drive element is used to drive the transmission assembly 20 to perform a swinging and squeezing motion on each piston chamber 61.

[0034] It should be noted that, referring to Figure 3 and Figure 4There are three piston chambers 61, which are arranged in an array at equal intervals. In this embodiment, the number of umbrella valves 40 is the same as the number of piston chambers 61. Therefore, there are three umbrella valves 40, each corresponding to the three piston chambers 61. The umbrella valves 40 connect the water inlet chamber 1211 and the three-hole piston 60, allowing liquid to enter the water inlet chamber 1211 from the water inlet 1111 and flow into the three piston chambers 61 through the three umbrella valves 40 on the diverter plate 121. There is only one triangular valve 50, which is located in the middle of the three-hole piston 60 and directly opposite the water outlet chamber 1212 and the water outlet 1112. The triangular valve 50 is used to press the liquid from the three piston chambers 61 into the water outlet chamber 1212 and out through the water outlet 1112. The liquid in the three piston chambers 61 is evenly pressed onto the diverter plate 121 and flows out through the triangular valve 50, a one-way valve.

[0035] Further, refer to Figure 3 and Figure 4 In order to make the motor 100 pump suitable for operation under high load conditions, the transmission assembly 20 includes an impeller 70, a bearing 80, and an eccentric wheel 90, which are arranged in sequence. The impeller 70 is sleeved on the three-hole piston 60. The impeller 70 has a three-leaf structure. A piston rod 62 is provided on each of the three piston chambers 61. The three blades on the impeller 70 are each provided with a through-hole 71 for the piston rod 62 to pass through. The piston rods 62 on the three piston chambers 61 are all inserted into the three through-holes 71 on the impeller 70, so that each piston rod 62 and the impeller 70 can be installed. It should be noted that each piston chamber 61 is connected to the impeller 70 through the piston rod 62. When the impeller 70 rotates, it will drive each piston rod 62 to swing. During the swinging process, the piston rod 62 will squeeze the piston chamber 61, so that liquid is pumped into or out of the piston chamber 61.

[0036] Further, refer to Figure 4 and Figure 5The driving component is the motor 100, which is screwed and fixed to the bottom shell 123 at one end away from the middle shell 122. The output shaft of the motor 100 extends into the bottom shell 123 and is connected to the eccentric wheel 90. The bearing 80 is arranged at an angle. The bearing 80 is sleeved on the eccentric wheel 90, and the impeller 70 is sleeved outside the bearing 80. The motor 100 is used to drive the eccentric wheel 90 and the bearing 80 to rotate, so as to drive the impeller 70 to swing and squeeze each piston chamber 61. The bearing 80 is used to replace the shaft core, so that when the motor 100 pump is powered on, the motor 100 rotates to drive the eccentric wheel 90 to rotate. The eccentric wheel 90 is connected to the bearing 80, and the bearing 80 is connected to the impeller 70 to form a reciprocating motion mechanism. When the motor 100 rotates one circle, the impeller 70 swings back and forth. The impeller 70 is connected to the three-hole piston 60. When the impeller 70 swings back and forth, the volume of the three-hole piston 60 changes once, and the volume of the piston chamber 61 in the three-hole piston 60 increases. The liquid enters the three-hole piston 60 from the water inlet 1111. When the volume in the piston chamber 61 decreases, the liquid flows out from the water outlet 1112. The transmission assembly 20, consisting of the impeller 70, bearing 80, and eccentric 90, is designed to significantly improve the service life of the motor 100 pump under load conditions by increasing the pressure within the piston chamber 61 when back pressure is applied to the water outlet 1112, increasing the swing resistance of the impeller 70, and subjecting the bearing 80 and eccentric 90 to a single axial force. The bearing 80 and impeller 70 are thus protected from deformation and wear. In this embodiment, the bearing 80 is provided between the impeller 70 and eccentric 90 to address the prior art problem of the impeller 70 and eccentric 90 being connected by an inclined shaft core, which can then wear through the eccentric 90. The use of the bearing 80 further stabilizes the rotation of the impeller 70 and eccentric 90, and prevents the impeller 70 and eccentric 90 from deformation and wear under long-term rotation. Consequently, the motor 100 pump using this transmission assembly 20 is suitable for operation under high-load conditions.

[0037] It should be noted that when the motor 100 is started, by controlling the rotation of the eccentric wheel 90 and the bearing 80 to drive the impeller 70 to swing and squeeze each piston chamber 61, each piston chamber 61 will reciprocate, that is, stretch and compress. When the piston chamber 61 is in a stretched state, the volume of the piston chamber 61 increases, and the pressure in the piston chamber 61 will be less than atmospheric pressure, thereby forming a pressure differential. At this time, the umbrella valve 40 will be opened, and external liquid can be pumped into the piston chamber 61 through the water inlet 1111. After the liquid enters, the volume of the piston chamber 61 decreases, and the pressure in the piston chamber 61 will be less than atmospheric pressure, thereby forming a pressure differential. At this time, the triangular valve 50 will open, and the liquid will be squeezed out into the water outlet chamber 1212 and out through the water outlet 1112. In this way, under the action of the water pump and the transmission assembly 20, the liquid can be continuously pumped in and out, forming a relatively stable flow.

[0038] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person of ordinary skill in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A motor pump with a long life under high load conditions, characterized in that: include: A housing assembly (10), a water pumping component, a transmission assembly (20) and a driving component, wherein the housing assembly (10) comprises a water inlet and outlet cover (11) and a housing (12), wherein the water inlet and outlet cover (11) is arranged on one end of the housing (12), and a double-headed water nozzle (111) is arranged on the water inlet and outlet cover (111), and the double-headed water nozzle (111) is provided with a water inlet (1111) and a water outlet (1112), wherein the water pumping component is arranged on the housing (12), and wherein the water pumping component The device is used to pump liquid into the water inlet (1111) and press it out from the water outlet (1112). The transmission assembly (20) includes an impeller (70), a bearing (80), and an eccentric wheel (90) arranged in sequence. The impeller (70) is connected to the water pumping component. The bearing (80) is sleeved on the eccentric wheel (90), and the impeller (70) is sleeved outside the bearing (80). The driving component is used to control the transmission assembly (20) to drive the water pumping component to work.

2. A motor pump with a long life under high load conditions according to claim 1, characterized in that: The shell (12) comprises a diverter disc (121), a middle shell (122) and a bottom shell (123) which are arranged in sequence, and the water inlet and outlet cover (11), the diverter disc (121), the middle shell (122) and the bottom shell (123) are connected and fixed in sequence.

3. The motor pump with a long life under high load conditions according to claim 2, characterized in that: Bolts (30) are provided between the water inlet and outlet cover (11), the diverter plate (121), the middle shell (122), and the bottom shell (123); the bolts (30) pass through the water inlet and outlet cover (11), the diverter plate (121), the middle shell (122), and the bottom shell (123) in sequence from the outside of the water inlet and outlet cover (11).

4. The motor pump with a long life under high load conditions according to claim 2, characterized in that: The water inlet and outlet cover (11) is located at one end of the diverter disc (121), and the water inlet and outlet cover (11) is snap-connected to the diverter disc (121). A water inlet cavity (1211) and a water outlet cavity (1212) are formed between the diverter disc (121) and the water inlet and outlet cover (11), which are respectively connected to the water inlet (1111) and the water outlet (1112).

5. The motor pump with a long life under high load conditions according to claim 4, characterized in that: The diverter disc (121) is further provided with an umbrella valve (40) and a triangular valve (50). The umbrella valve (40) is used to block and connect the water pump component and the water inlet chamber (1211), and the triangular valve (50) is used to block and connect the water pump component and the water outlet chamber (1212).

6. The motor pump with a long life under high load conditions according to claim 4, characterized in that: A raised outer protrusion block (1213) is provided on one side of the diverter disc (121) near the outer edge, and the outer protrusion block (1213) is provided along the circumferential direction of the diverter disc (121). An outer boss (112) for abutting against the outer protrusion block (1213) is provided on one side of the water inlet and outlet cover (11), and the outer boss (112) abuts against the outer protrusion block (1213). A mounting groove (12131) is provided on the outer protrusion block (1213) along the circumferential direction, and a sealing ring (1215) is provided in the mounting groove (12131), and the sealing ring (1215) abuts against the water inlet and outlet cover (11).

7. The motor pump with a long life under high load conditions according to claim 6, characterized in that: The diverter disc (121) is further provided with an inner protrusion block (1214) on the side facing the water inlet and outlet cover (11). The inner protrusion block (1214) is arranged along the circumferential direction of the diverter disc (121). The water inlet and outlet cover (11) is provided with an inner boss (113) relative to the inner protrusion block (1214). The inner boss (113) abuts against the inner protrusion block (1214). An annular groove (1131) is provided on the inner boss (113) along the circumferential direction. A sealing gasket (114) is accommodated in the annular groove (1131). The sealing gasket (114) abuts against the inner protrusion block (1214).

8. The motor pump with a long life under high load conditions according to claim 4, characterized in that: The water pumping component is a three-hole piston (60) having a plurality of piston cavities (61) formed thereon. The opening side of each piston cavity (61) is respectively in contact with a side of the diverter plate (121) away from the water inlet and outlet cover (11).

9. The motor pump with a long life under high load conditions according to claim 8, characterized in that: A piston column (62) is provided on each of the plurality of piston chambers (61), a through hole (71) for the piston column (62) to pass through is provided on the impeller (70), the piston column (62) on each of the piston chambers (61) passes through the through hole (71) on the impeller (70), and the driving member is used to drive the impeller (70) to move each of the piston chambers (61).

10. The motor pump with a long life under high load conditions according to claim 9, characterized in that: The driving member is a motor (100), and the motor (100) is screwed and fixed to one end of the bottom shell (123) away from the middle shell (122). The output shaft of the motor (100) extends into the bottom shell (123) and is connected to the eccentric wheel (90).

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