Double-inlet and double-outlet impeller pump

Abstract

The double-inlet and double-outlet impeller pump comprises a pump head body, a water inlet cavity and a water outlet cavity are formed in the pump head body, the double-inlet and double-outlet impeller pump further comprises a first water way switching valve seat and a second water way switching valve seat, a second water inlet is formed in a first pump cover, a second water outlet is formed in a second pump cover, and a power part drives a first transmission part and a second transmission part to rotate. The transmission part I and the transmission part II rotate to respectively drive the switching part I and the switching part II to do reciprocating linear motion in the vertical direction, and the switching part does linear motion to connect or disconnect water paths between the water inlet cavity and the first water inlet and the second water inlet; the second switching part moves linearly so that water paths between the water outlet cavity and the first water outlet and between the water outlet cavity and the second water outlet can be connected or disconnected, and the on-off state of the water inlet cavity and the first water inlet and the on-off state of the water inlet cavity and the second water inlet correspond to the on-off state of the water outlet cavity and the first water outlet and the on-off state of the water outlet cavity and the second water outlet. When the two water paths are respectively pumped, another impeller pump does not need to be added, so that the configuration cost of the system when the impeller pump is used by related equipment is effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fluid conveying equipment, in particular to a double-inlet and double-outlet impeller pump. BACKGROUND

[0002] The impeller pump is a commonly used fluid conveying equipment, which mainly drives the impeller to rotate at high speed through the motor, and a low pressure area is formed at the center of the impeller. When the pump is started after being filled with liquid, the external liquid is sucked into the center of the impeller under the action of atmospheric pressure. After the liquid enters the impeller, it is rotated at high speed driven by the blade, and under the action of centrifugal force, the liquid flows along the radial direction of the impeller to the outer edge, and the speed gradually increases. The water pumped into the impeller pump is pumped out to the water outlet chamber.

[0003] The existing impeller pump has only one water outlet and one water inlet. When pumping water in two water paths respectively, two impeller pumps are generally connected in parallel to realize two-way pumping. However, this setting of two pumps occupies a large space, thereby increasing the system configuration cost when using the impeller pump. SUMMARY

[0004] The purpose of the present application is to provide a double-inlet and double-outlet impeller pump, which does not need to increase an impeller pump when pumping water in two water paths respectively, thereby reducing the space occupation and the system configuration cost when using the impeller pump.

[0005] To solve the above technical problems, the present application adopts the following scheme: A double-inlet and double-outlet impeller pump, comprising a pump head body, the pump head body is provided with a water inlet chamber and a water outlet chamber, the pump head body is provided with a first pump cover and a second pump cover, further comprising a water path switching valve seat one and a water path switching valve seat two located on the water inlet path and the water outlet path respectively, the first pump cover is provided with a first water inlet, the second pump cover is provided with a first water outlet, the water path switching valve seat one is provided with a second water inlet, the water path switching valve seat two is provided with a second water outlet, the pump head body is provided with a power part, a transmission part one and a transmission part two, the water path switching valve seat one comprises a switching part one, the water path switching valve seat two comprises a switching part two, one side of the transmission part one and the transmission part two is movably connected with the power part, the other side of the transmission part one and the transmission part two is connected with the switching part one and the switching part two respectively, the power part drives the transmission part one and the transmission part two to rotate, the transmission part one and the transmission part two drive the switching part one and the switching part two to move vertically and reciprocally, the linear movement of the switching part one connects or blocks the water path between the water inlet chamber and the first water inlet and the second water inlet, the linear movement of the switching part two connects or blocks the water path between the water outlet chamber and the first water outlet and the second water outlet, the on-off state of the water inlet chamber and the first water inlet and the second water inlet corresponds to the on-off state of the water outlet chamber and the first water outlet and the second water outlet.

[0006] In the existing impeller pump, the pump head body is the main body of the impeller pump, and the built-in impeller and driving motor (not shown in the figure, but the conventional design) are responsible for converting mechanical energy into liquid kinetic energy. The liquid is accelerated by the impeller to form a high-pressure water flow. The water outlet is the outlet of the high-pressure water flow. An impeller pump has only one water inlet and one water outlet. When two water paths need to be pumped separately, another impeller pump needs to be added, which increases the space occupation of the corresponding equipment and the cost.

[0007] In this scheme, on the basis of the existing impeller pump, water route switching valve seat one and water route switching valve seat two connected with the pump head body are respectively arranged on the water inlet water route and the water outlet water route of the water inlet cavity. Water route switching valve seat one realizes dynamic switching of the water route on-off state between the water inlet cavity and the first water inlet and the second water inlet. Water route switching valve seat two realizes dynamic switching of the water route on-off state between the water outlet cavity and the first water outlet and the second water outlet. Water route switching valve seat one controls the water inlet path, and water route switching valve seat two controls the water outlet path. The power part provides switching power. The transmission part one and the transmission part two convert the rotary motion of the power part into the linear motion of the two switching parts. The two switching parts directly control the on-off of the water inlet water route and the water outlet water route. The power part drives the two transmission parts to rotate at the same time. The two transmission parts convert the rotary motion into the reciprocating linear motion of the two switching parts, respectively. The switching part one on the water inlet water route guides the water route between the water inlet cavity and one of the water inlets and blocks the water route with the other water inlet. The source water enters the water inlet cavity from one of the water inlets and then enters the pump head body of the impeller pump. The switching part two on the water outlet water route guides the water route between the water outlet cavity and one of the water outlets and blocks the water route with the other water outlet. The impeller pump pumps water to the water outlet cavity and then outputs it through one of the water outlets.

[0008] When needed, the power part reverses rotation again. The transmission part one drives the switching part one on the water inlet water route to block the water route between the water inlet cavity and one of the water inlets and connect the water route with the other water inlet. The source water enters the water inlet cavity from the other water inlet and then enters the pump head body of the impeller pump. The switching part two on the water outlet water route blocks the water route between the water outlet cavity and one of the water outlets and connects the water route with the other water outlet. The impeller pump pumps water to the water outlet cavity and then outputs it through the other water outlet. In this way, the power part can realize the opposite water route on-off state of the water inlet cavity and the two water inlets and the water outlet cavity and the two water outlets according to different needs by forward and reverse rotation. When two water paths need to be pumped separately, no additional impeller pump is needed, effectively reducing the system configuration cost when using the impeller pump.

[0009] Optionally, the switching part 1 is located on the water path connecting the water inlet chamber with the first water inlet and the second water inlet, the switching part 2 is located on the water path connecting the water outlet chamber with the first water outlet and the second water outlet, the power part is connected to the output shaft of the driving motor of the impeller pump, an elastic force transmission part 1 is movably provided on one side wall of the switching part, an elastic force transmission part 2 is movably provided on the side wall of the switching part 2, a first thread groove is provided on one side wall of the transmission part, a second thread groove is provided on the side wall of the transmission part 2, and one end of the elastic force transmission part 1 and the elastic force transmission part 2 are respectively abutted against the first thread groove and the second thread groove.

[0010] Optionally, the switching part includes a first control rod, a second control rod, a first spring, and a second spring movably arranged in a water channel switching valve seat, the lower end of the first control rod abuts against the upper end of the second control rod, one end of the first spring acts on an inner top wall of the water channel switching valve seat, and the other end acts on the first control rod, one end of the second spring acts on an inner bottom wall of the water channel switching valve seat, and the other end acts on the second control rod, a first sealing ring and a second sealing ring are embedded in the side wall of the first control rod, the water inlet chamber is connected to the first water inlet to form a water channel with a sealing port 1, and the water surface connected to the second water inlet is formed to form a sealing port 2, the power part rotates to drive the elastic force transmission member 1 to move up and down and drive the second control rod and the first control rod to reciprocate up and down, the first control rod reciprocates up and down to change the positions of the first sealing ring and the second sealing ring to connect or block the water channels at the sealing port 1 and the sealing port 2; The switching part 2 includes a third control rod, a fourth control rod, a fourth spring, and a fifth spring movably arranged in the water channel switching valve seat 2. The lower end of the third control rod abuts the upper end of the fourth control rod. One end of the fourth spring acts on the inner top wall of the water channel switching valve seat 2, and the other end acts on the third control rod. One end of the fifth spring acts on the inner bottom wall of the water channel switching valve seat 2, and the other end acts on the fourth control rod. The seventh sealing ring and the eighth sealing ring are embedded in the side wall of the third control rod. The water outlet chamber is connected to the first water outlet to form a water channel with a sealing water port 3, and the water surface connected to the second water outlet is formed with a sealing water port 4. The rotation of the power part drives the elastic force transmission part 2 to move up and down and drives the fourth control rod and the third control rod to move back and forth up and down. The up and down reciprocating movement of the third control rod changes the positions of the seventh sealing ring and the eighth sealing ring to connect or block the water channels of the sealing water port 3 and the four sealing water ports.

[0011] Optionally, the upper side wall of the first control rod is provided with a first water channel connected to the first water inlet, the lower end of the first control rod is provided with a second water channel connected to the second water inlet, the upper side wall of the second control rod is provided with a third water channel connected to the second water inlet and the second water channel, the first sealing ring and the second sealing ring are located between the first water channel and the second water channel, and the first sealing ring is located above the second sealing ring, and the upper side wall of the second control rod is provided with a third sealing ring located below the third water channel; The upper end side wall of the third control rod is provided with a fourth water passing groove connected with the first water outlet, the lower end of the third control rod is provided with a fifth water passing groove connected with the second water outlet, the upper end side wall of the third control rod is provided with a sixth water passing groove connected with the second water outlet and the third water passing groove, the seventh sealing ring and the eighth sealing ring are located between the third water passing groove and the fourth water passing groove, and the seventh sealing ring is located above the eighth sealing ring, and the upper end side wall of the third control rod is provided with a ninth sealing ring located below the sixth water passing groove.

[0012] Optionally, the first control rod side wall is provided with a first limiting plate located between the first sealing ring and the second sealing ring, and the lower end of the first spring acts on the first limiting plate. The third control rod side wall is provided with a second limiting plate located between the seventh sealing ring and the eighth sealing ring, and the lower end of the fourth spring acts on the second limiting plate.

[0013] Optionally, the waterway switching valve seat one is provided with a first guide cavity, a second guide cavity and a third guide cavity from top to bottom, the first guide cavity is connected with the first water inlet, the second guide cavity is connected with the second water inlet, the upper end of the first control rod is slidingly inserted into the first guide cavity, one end of the second control rod is slidingly inserted into the second guide cavity, and the other end is slidingly inserted into the third guide cavity, and the lower end of the second spring acts on the bottom wall of the third guide cavity. The waterway switching valve seat two is provided with a fourth guide cavity, a fifth guide cavity and a sixth guide cavity from top to bottom, the fourth guide cavity is connected with the first water outlet, the fifth guide cavity is connected with the second water outlet, the upper end of the third control rod is slidingly inserted into the fourth guide cavity, one end of the fourth control rod is slidingly inserted into the fifth guide cavity, and the other end is slidingly inserted into the sixth guide cavity, and the lower end of the fifth spring acts on the bottom wall of the sixth guide cavity.

[0014] Optionally, the elastic force transmission member one includes a first plug, a third spring and a first sealing plate, the second control rod side wall is provided with a transverse first mounting cavity, the first mounting cavity extends away from the power part, the first sealing plate is connected with the rear end of the first mounting cavity, one end of the first plug passes through the first mounting cavity and abuts in the first threaded groove, and the side wall of the first plug is provided with a first baffle limiting the first plug from sliding out of the first mounting cavity. The elastic force transmission member two includes a second plug, a sixth spring and a second sealing plate, the fourth control rod side wall is provided with a transverse second mounting cavity, the second mounting cavity extends away from the power part, the second sealing plate is connected with the rear end of the second mounting cavity, one end of the second plug passes through the second mounting cavity and abuts in the second threaded groove, and the side wall of the second plug is provided with a second baffle limiting the second plug from sliding out of the second mounting cavity.

[0015] Optionally, the power part comprises a fixed seat and a driving gear, the lower end of the fixed seat is connected with the driving gear, and the output shaft of the driving motor passes through the driving gear and the fixed seat; the transmission part one comprises a first stud, the first stud is movably sleeved with a first supporting column on the pump head body, a first screw thread is arranged on the outer wall of the first stud, a first thread groove is formed between the first screw thread and the side wall of the first stud, and a first driven gear that is engaged with the driving gear is arranged at the lower end of the first stud. The transmission part two comprises a second stud, the second stud is movably sleeved with a second supporting column on the pump head body, a second screw thread is arranged on the outer wall of the second stud, a second thread groove is formed between the second screw thread and the side wall of the second stud, and a second driven gear that is engaged with the driving gear is arranged at the lower end of the second stud.

[0016] Optionally, the top of the first supporting column is provided with a first limiting bolt for limiting the disengagement of the first stud and the first supporting column; and the top of the second supporting column is provided with a second limiting bolt for limiting the disengagement of the second stud and the second supporting column.

[0017] Optionally, the pump head body comprises an upper shell and a lower shell, the upper end of the upper shell is sealingly connected with the first pump cover and the second pump cover, the lower end of the upper shell is connected with the lower shell, the lower shell is connected with the shell of the driving motor, a pump water cavity that is communicated with the water outlet cavity and the water inlet cavity is arranged in the upper shell, an impeller that is connected with the output shaft of the driving motor is arranged in the pump water cavity, a fourth sealing ring is arranged between the first pump cover and the upper shell, a tenth sealing ring is arranged between the second pump cover and the upper shell, a supporting plate is arranged between the upper shell and the lower shell, a fifth sealing ring is arranged between the supporting plate and the upper shell, the output shaft passes through the supporting plate and is connected with the impeller, and sixth sealing rings that are located on both sides of the output shaft are embedded in the supporting plate.

[0018] The present application has the beneficial effects that: In the present application, when the switching part one on the water inlet channel is connected with the water channel between the water inlet cavity and one water inlet and is disconnected with the water channel between the water inlet cavity and the other water inlet, source water enters the water inlet cavity from one water inlet and then enters the pump head body of the impeller pump, the switching part two on the water outlet channel is connected with the water channel between the water outlet cavity and one water outlet and is disconnected with the water channel between the water outlet cavity and the other water outlet, and the impeller pump pumps water to the water outlet cavity and then outputs the water through one water outlet. When needed, the power part is reversely rotated, the switching part one on the water inlet channel is disconnected with the water channel between the water inlet cavity and one water inlet and is connected with the water channel between the water inlet cavity and the other water inlet, source water enters the water inlet cavity from the other water inlet and then enters the pump head body of the impeller pump, the switching part two on the water outlet channel is disconnected with the water channel between the water outlet cavity and one water outlet and is connected with the water channel between the water outlet cavity and the other water outlet, and the impeller pump pumps water to the water outlet cavity and then outputs the water through the other water outlet. In this way, the power part is reversely rotated according to the need, and the water inlet cavity and the two water inlets and the water outlet cavity and the two water outlets are in opposite water channel on-off states according to different needs. When two water channels are pumped respectively, one impeller pump is not needed, and the system configuration cost when the impeller pump is used is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present application; Figure 2 is Figure 1 is a sectional structural schematic diagram of A-A in the middle; Figure 3 is a structural schematic diagram of the power part; Figure 4 is a structural schematic diagram of the transmission part one; Figure 5 is a structural diagram of the first bolt; Figure 6 is a structural schematic diagram of the transmission part two; Figure 7 is a structural diagram of the second bolt.

[0020] Reference signs: 01 - driving motor, 02 - output shaft, 03 - first limiting bolt, 04 - first stud, 05 - first support column, 06 - fixing seat, 07 - lower shell, 08 - sixth sealing ring, 09 - support plate, 10 - fifth sealing ring, 11 - upper shell, 12 - pump water cavity, 13 - impeller, 14 - water inlet cavity, 15 - limiting plate, 16 - fourth sealing ring, 17 - first water inlet, 18 - first pump cover, 19 - water sealing port one, 20 - first water passing groove, 21 - first control rod, 22 - first sealing ring, 23 - first spring, 24 - water sealing port two, 25 - second sealing ring, 26 - second water passing groove, 27 - second water inlet, 28 - third water passing groove, 29 - second guide cavity, 30 - third sealing ring, 31 - third guide cavity, 32 - first sealing plate, 33 - third spring, 34 - first bolt, 35 - second control rod, 36 - first thread, 37 - second spring, 38 - first thread groove, 39 - first driven gear, 40 - first baffle, 41 - first bending section, 42 - first extension section, 43 - first mounting cavity, 44 - first guide cavity, 45 - first water outlet, 46 - second water outlet, 47 - driving gear, 48 - water outlet cavity, 49 - fourth guide cavity, 50 - water sealing port three, 51 - fourth water passing groove, 52 - third control rod, 53 - seventh sealing ring, 54 - fourth spring, 55 - water sealing port four, 56 - eighth sealing ring, 57 - fifth water passing groove, 58 - fifth guide cavity, 59 - sixth water passing groove, 60 - ninth sealing ring, 61 - sixth guide cavity, 62 - second sealing plate, 63 - sixth spring, 64 - second mounting cavity, 65 - second extension section, 66 - second bending section, 67 - second baffle, 68 - fourth control rod, 69 - fifth spring, 70 - second thread groove, 71 - second limiting bolt, 72 - second stud, 73 - second support column, 74 - second thread, 75 - second driven gear, 76 - second bolt, 77 - second pump cover, 78 - tenth sealing ring. DETAILED DESCRIPTION

[0021] The application will be further described below in connection with the embodiments and drawings, but the embodiments of the application are not limited thereto.

[0022] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0023] In the description of the application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "opened", "mounted", "connected", "linked" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. EMBODIMENT

[0024] The utility model provides a double -in double -out impeller pump, including the pump head body, be equipped with water inlet cavity 14, water outlet cavity 48 in the pump head body, be equipped with first pump cover 18, second pump cover 77 on the pump head body, still include water route switching valve seat one, water route switching valve seat two respectively on the water inlet water route, the water outlet water route, be equipped with first water inlet 17 on first pump cover 18, be equipped with first water outlet 45 on second pump cover 77, be equipped with second water inlet 27 on water route switching valve seat one, be equipped with second water outlet 46 on water route switching valve seat two, be equipped with power part, transmission part one, transmission part two in the pump head body, water route switching valve seat one includes switching part one, and water route switching valve seat two includes switching part two, one side of transmission part one, transmission part two all are movably connected with power part, the other side of transmission part one, transmission part two is connected with switching part one, switching part two respectively, power part drives transmission part one, transmission part two rotates, and transmission part one, transmission part two rotates respectively drives switching part one, switching part two in vertical reciprocating linear motion, and switching part linear motion makes water route between water inlet cavity 14 and first water inlet 17, second water inlet 27 connect or break, and switching part two linear motion makes water route between water outlet cavity 48 and first water outlet 45, second water outlet 46 connect or break, and the on-off state of water inlet cavity 14 and first water inlet 17, second water inlet 27 corresponds the on-off state of water outlet cavity 48 and first water outlet 45, second water outlet 46.

[0025] In the existing impeller pump, the pump head body is the main body of the impeller pump, and the built-in impeller 13 and the driving motor 01 (not shown in the figure, but the conventional design) are responsible for converting mechanical energy into liquid kinetic energy. The liquid is accelerated by the impeller 1313 to form a high-pressure water flow. The water outlet is the outlet of the high-pressure water flow. An impeller pump has only one water inlet and one water outlet. When two water paths need to be pumped separately, another impeller pump needs to be installed, which increases the space occupation of the corresponding equipment and the system configuration cost when using the impeller pump.

[0026] In the present scheme, as shown in Figure 1 and Figure 2 On the basis of the existing impeller pump, water route switching valve seat one and water route switching valve seat two connected with the pump head body are respectively arranged on the water inlet water route and the water outlet water route of the water inlet cavity 14. Water route switching valve seat one realizes dynamic switching of the on-off state of the water route between the water inlet cavity 14 and the first water inlet 17 and the second water inlet 27. Water route switching valve seat two realizes dynamic switching of the on-off state of the water route between the water outlet cavity 48 and the first water outlet 45 and the second water outlet 46. Water route switching valve seat one controls the water inlet path, and water route switching valve seat two controls the water outlet path. The power part provides switching power. Transmission part one and transmission part two convert the rotary motion of the power part into linear motion of the two switching parts. The two switching parts directly control the on-off of the water outlet water route and the water inlet water route. The power part drives the two transmission parts to rotate simultaneously. The two transmission parts convert the rotary motion into reciprocating linear motion of the two switching parts, respectively.

[0027] The initial state assumes that the switching part is located at the middle position, the water inlet cavity 14 is blocked with the first water inlet 17 and the second water inlet 27, the water outlet cavity 48 is blocked with the first water outlet 45 and the second water outlet 46 (or by default, one end is connected, depending on the design requirements), the water path connection state of the first water inlet 17 and the water inlet cavity 14 is the same as that of the first water outlet 45 and the water outlet cavity 48, and the water path connection state of the second water inlet 27 and the water inlet cavity 14 is the same as that of the second water outlet 46 and the water outlet cavity 48.

[0028] When the switching part on the water inlet path connects the water path of the water inlet cavity 14 and the first water inlet 17 and blocks the water path of the second water inlet 27, the source water enters the water inlet cavity 14 from the first water inlet 17, and then is transported into the pump head body. The switching part on the water outlet path connects the water path of the water outlet cavity 48 and the first water outlet 45 and blocks the water path of the second water outlet 46, and the impeller pump pumps the source water to the water outlet cavity 48, and then the source water is output from the first water outlet 45.

[0029] When needed, the power part reversely rotates, the transmission part one drives the switching part one on the water inlet path to block the water path of the water inlet cavity 14 and the first water inlet 17 and connect the water path of the second water inlet 27, so that the source water enters the water inlet cavity 14 from the second water inlet 27, and then is transported into the pump head body. The switching part on the water outlet path blocks the water path of the water outlet cavity 48 and the first water outlet 45 and simultaneously connects the water path of the second water outlet 46, and the impeller pump pumps the source water to the water outlet cavity 48, and then the source water is output from the second water outlet 46. In this way, the power part can be reversely rotated as needed to realize that the water inlet cavity 14 and the two water inlets, the water outlet cavity 48 and the two water outlets are in opposite water path connection states according to different needs. When two water paths need to be pumped respectively, there is no need to install another impeller pump, which effectively reduces the system configuration cost when using the impeller pump.

[0030] Further, the switching part one is located on the water path connecting the water inlet cavity 14 and the first water inlet 17 and the second water inlet 27, the switching part two is located on the water path connecting the water outlet cavity 48 and the first water outlet 45 and the second water outlet 46, the power part is connected with the output shaft 02 of the driving motor 01 of the impeller pump, the elastic force transmission member one is movably arranged on the side wall of the switching part one, the elastic force transmission member two is movably arranged on the side wall of the switching part two, the first threaded groove 38 is arranged on the side wall of the transmission part one, the second threaded groove 70 is arranged on the side wall of the transmission part two, and one end of the elastic force transmission member one and the elastic force transmission member two respectively abuts against the first threaded groove 38 and the second threaded groove 70.

[0031] Further, the switching part one includes a first control rod 21, a second control rod 35, a first spring 23, a second spring 37 movably arranged in the waterway switching valve seat one, the lower end of the first control rod 21 abuts against the upper end of the second control rod 35, one end of the first spring 23 acts on the top wall in the waterway switching valve seat one, and the other end acts on the first control rod 21, one end of the second spring 37 acts on the bottom wall in the waterway switching valve seat one, and the other end acts on the second control rod 35, the first sealing ring 22 and the second sealing ring 25 are embedded on the side wall of the first control rod 21, the water inlet cavity 14 and the first water inlet 17 are connected to form the water sealing port one 19, and the water and the second water inlet 27 are connected to form the water sealing port two 24, the power part drives the elastic force transmission part one to move up and down and drives the second control rod 35 and the first control rod 21 to move up and down reciprocatingly, the first control rod 21 moves up and down reciprocatingly to change the positions of the first sealing ring 22 and the second sealing ring 25 to connect or block the waterways at the water sealing port one 19 and the water sealing port two 24. The switching part two includes a third control rod 52, a fourth control rod 68, a fourth spring 54, a fifth spring 69 movably arranged in the waterway switching valve seat two, the lower end of the third control rod 52 abuts against the upper end of the fourth control rod 68, one end of the fourth spring 54 acts on the top wall in the waterway switching valve seat two, and the other end acts on the third control rod 52, one end of the fifth spring 69 acts on the bottom wall in the waterway switching valve seat two, and the other end acts on the fourth control rod 68, the seventh sealing ring 53 and the eighth sealing ring 56 are embedded on the side wall of the third control rod 52, the water outlet cavity 48 and the first water outlet 45 are connected to form the water sealing port three 50, and the water and the second water outlet 46 are connected to form the water sealing port four 55, the power part drives the elastic force transmission part two to move up and down and drives the fourth control rod 68 and the third control rod 52 to move up and down reciprocatingly, the third control rod 52 moves up and down reciprocatingly to change the positions of the seventh sealing ring 53 and the eighth sealing ring 56 to connect or block the waterways at the water sealing port three 50 and the water sealing port four 55.

[0032] Specifically, as Figure 1 and Figure 2In the switching part one on the inlet waterway, the first control rod 21 is located on the upper end of the second control rod 35, and under the pre-tightening force of the first spring 23 and the second spring 37, the lower end of the first control rod 21 abuts against the upper end of the second control rod 35, so as to ensure the synchronous movement of the first control rod 21 and the second control rod 35. When the second control rod 35 moves upward, the first spring 23 is compressed to store the elastic potential energy for the downward movement of the first control rod 21. When the second control rod 35 moves downward, the second spring 37 is compressed to store the elastic potential energy for the upward movement of the second control rod 35. The upward movement of the second control rod 35 drives the upward movement of the first control rod 21 and the compression of the first spring 23, until the first sealing ring 22 seals the waterway at the water sealing opening one 19. At this time, the water cavity 14 is connected with the waterway at the water sealing opening two 24 on the second inlet waterway, and the upward and downward movement of the two control rods realizes the waterway at the water sealing opening one 19 and the water sealing opening two 24 to be in the state of being connected or blocked according to the actual demand.

[0033] Similarly, in the switching part two on the outlet waterway, the third control rod 52 is located on the upper end of the fourth control rod 68, and under the pre-tightening force of the fourth spring 54 and the fifth spring 69, the lower end of the third control rod 52 abuts against the upper end of the fourth control rod 68, so as to ensure the synchronous movement of the third control rod 52 and the fourth control rod 68. When the third control rod 52 moves upward, the fourth spring 54 is compressed to store the elastic potential energy for the downward movement of the third control rod 52. When the fourth control rod 68 moves downward, the fifth spring 69 is compressed to store the elastic potential energy for the upward movement of the fourth control rod 68. The upward movement of the fourth control rod 68 drives the upward movement of the third control rod 52 and the compression of the fourth spring 54, until the seventh sealing ring 53 seals the waterway at the water sealing opening three 50. At this time, the water cavity 48 is connected with the waterway at the water sealing opening four 55 on the second outlet waterway, and the upward and downward movement of the two control rods realizes the waterway at the water sealing opening three 50 and the water sealing opening four 55 to be in the state of being connected or blocked according to the actual demand.

[0034] Further, the upper end side wall of the first control rod 21 is provided with the first water passing groove 20 connected with the first inlet waterway 17, the lower end of the first control rod 21 is provided with the second water passing groove 26 connected with the second inlet waterway 27, the upper end side wall of the second control rod 35 is provided with the third water passing groove 28 connected with the second inlet waterway 27 and the second water passing groove 26, the first sealing ring 22 and the second sealing ring 25 are located between the first water passing groove 20 and the second water passing groove 26, and the first sealing ring 22 is located above the second sealing ring 25, and the upper end side wall of the second control rod 35 is provided with the third sealing ring 30 located below the third water passing groove 28. The upper end side wall of the third control rod 52 is provided with a fourth water passing groove 51 connected with the first water outlet 45, the lower end of the third control rod 52 is provided with a fifth water passing groove 57 connected with the second water outlet 46, the upper end side wall of the third control rod 52 is provided with a sixth water passing groove 59 connected with the second water outlet 46 and the third water passing groove 28, the seventh sealing ring 53 and the eighth sealing ring 56 are located between the third water passing groove 28 and the fourth water passing groove 51, and the seventh sealing ring 53 is located above the eighth sealing ring 56, and the upper end side wall of the third control rod 52 is provided with a ninth sealing ring 60 located below the sixth water passing groove 59.

[0035] Specifically, the third sealing ring 30 seals the installation gap between the upper end of the second control rod 35 and the second guide cavity 29, so as to avoid water from leaking into the driving motor 01 through the installation gap, and the ninth sealing ring seals the installation gap between the upper end of the fourth control rod 68 and the fifth guide cavity 58, so as to avoid water from leaking into the driving motor 01 through the installation gap.

[0036] Further, the side wall of the first control rod 21 is provided with a first limiting plate 15 located between the first sealing ring 22 and the second sealing ring 25, and the lower end of the first spring 23 acts on the first limiting plate 15. The side wall of the third control rod 52 is provided with a second limiting plate 15 located between the seventh sealing ring 53 and the eighth sealing ring 56, and the lower end of the fourth spring 54 acts on the second limiting plate 15.

[0037] Specifically, the first limiting plate 15 is used to limit the displacement range of the downward movement of the first control rod 21, and after the bottom surface of the first limiting plate 15 contacts with the inner wall of the water path switching valve seat one, the first control rod 21 no longer moves downward. The second limiting plate 15 is used to limit the displacement range of the downward movement of the third control rod 52, and after the bottom surface of the second limiting plate 15 contacts with the inner wall of the water path switching valve seat two, the third control rod 52 no longer moves downward.

[0038] Further, the inner wall of the water path switching valve seat one is provided with a first guide cavity 44, a second guide cavity 29 and a third guide cavity 31 from top to bottom, the first guide cavity 44 is connected with the first water inlet 17, the second guide cavity 29 is connected with the second water inlet 27, the upper end of the first control rod 21 is slidably inserted into the first guide cavity 44, one end of the second control rod 35 is slidably inserted into the second guide cavity 29, and the other end is slidably inserted into the third guide cavity 31, and the lower end of the second spring 37 acts on the bottom wall of the third guide cavity 31. The waterway switching valve seat two is internally provided with fourth guide cavity 49, fifth guide cavity 58 and sixth guide cavity 61 from top to bottom, the fourth guide cavity 49 is connected with the first water outlet 45, the fifth guide cavity 58 is connected with the second water outlet 46, the upper end of the third control rod 52 is slidably inserted into the fourth guide cavity 49, one end of the fourth control rod 68 is slidably inserted into the fifth guide cavity 58, and the other end is slidably inserted into the sixth guide cavity 61, and the lower end of the fifth spring 69 acts on the bottom wall of the sixth guide cavity 61.

[0039] Specifically, in the waterway switching valve seat one on the water inlet waterway, the first guide cavity 44 is extended downward from the inner wall of the first pump cover 18 to form a water sealing port one 19 at the lower end, when the first control rod 21 moves upward to the first sealing ring 22 to the water sealing port one 19 at the lower end of the first guide cavity 44, the first sealing ring 22 seals the waterway at the water sealing port one 19, the waterway between the water inlet cavity 14 and the first water inlet 17 is blocked, at this time, the second sealing ring 25 moves into the water inlet cavity 14, the waterway at the water sealing port two 24 is connected, the water inlet cavity 14 is connected with the second water inlet 27 through the second water passing groove 26 and the third water passing groove 28, and the water at the second water inlet 27 flows to the water inlet cavity 14 through the second water passing groove 26 and the third water passing groove 28; when the first control rod 21 moves downward to separate the first sealing ring 22 from the first guide cavity 44, the waterway at the water sealing port one 19 is connected, the first water inlet 17 is connected with the water inlet cavity 14 through the first water passing groove 20, at this time, the water flows to the water inlet cavity 14 through the first water passing groove 20, and the second sealing ring 25 moves downward to contact the water sealing port two 24 formed by the inner wall of the waterway switching valve seat, when the second sealing ring 25 is below the water sealing port two 24, it seals the waterway at the water sealing port two 24, that is, the second sealing ring 25 seals the waterway between the water inlet cavity 14 and the second water inlet 27, the first water passing groove 20 and the second water passing groove 26 correspond to each other and are always connected with the second water inlet 27.

[0040] Similarly, in the water channel switching valve seat 2 on the water outlet water channel, the fourth guide chamber 49 is formed by the inner wall of the second pump cover 77 extending downward, and forms a water sealing port 3 50 at the lower end. When the third control rod 52 moves upward to the seventh sealing ring 53 and moves to the water sealing port 3 50 at the lower end of the fourth guide chamber 49, the seventh sealing ring 53 seals the water channel at the water sealing port 3 50, and the water channel between the water outlet chamber 48 and the first water outlet 45 is blocked. At this time, the eighth sealing ring 56 moves into the water outlet chamber 48, and the water channel at the water sealing port 4 55 is connected. The water outlet chamber 48 is connected to the second water outlet 46 through the fifth water trough 57 and the sixth water trough 59. The water in the water outlet chamber 48 passes through the fifth water trough 57 and the sixth water trough 59. 9 flows to the second water outlet 46; when the third control rod 52 moves down to the seventh sealing ring 53 and disengages from the fourth guide chamber 49, the water path at the sealing water port three 50 is connected, and the first water outlet 45 is connected to the water outlet chamber 48 through the fourth water trough 51. At this time, water flows to the first water outlet 45 through the fourth water trough 51, and at the same time, the eighth sealing ring 56 moves down to contact the sealing water port four 55 formed by the inner wall of the second water path switching valve seat. When the eighth sealing ring 56 is located below the sealing water port four 55, it seals the water path of the sealing water port four 55, that is, the eighth sealing ring 56 seals the water path between the water inlet chamber 14 and the second water outlet 46. The fifth water trough 57 and the sixth water trough 59 correspond to each other up and down and are always connected to the second water outlet 46.

[0041] like Figure 5 As shown, further, the elastic force transmission member 1 includes a first latch 34, a third spring 33, and a first closing plate 32. A side wall of the second control rod 35 is provided with a transverse first mounting cavity 43, the first mounting cavity 43 extends in a direction away from the power unit, the first closing plate 32 is connected to the rear end of the first mounting cavity 43, one end of the first latch 34 passes through the first mounting cavity 43 and abuts against the first thread groove 38, and a side wall of the first latch 34 is provided with a first baffle 40 that limits the first latch 34 from sliding out of the first mounting cavity 43; like Figure 7 As shown, the second elastic force transmission member includes a second latch 76, a sixth spring 63, and a second sealing plate 62. The side wall of the fourth control rod 68 is provided with a horizontal second mounting cavity 64, and the second mounting cavity 64 extends in a direction away from the power unit. The second sealing plate 62 is connected to the rear end of the second mounting cavity 64. One end of the second latch 76 passes through the second mounting cavity 64 and abuts against the second thread groove 70. The side wall of the second latch 76 is provided with a second baffle 67 for limiting the second latch 76 from sliding out of the second mounting cavity 64.

[0042] Specifically, such as Figure 1 and Figure 2As shown, the second control rod 35 is provided with a first extension section 42 integrally formed on the side away from the power unit, and a first bending section 41 is arranged on the inner wall of the waterway switching valve seat I, which is adapted to the first extension section 42. The first bending section 41 prevents the first extension section 42 from moving downward, thereby limiting the displacement range of the second control rod 35 moving downward. A first mounting cavity 43 is arranged on the second control rod 35 and the first extension section 42, and a first sealing plate 32 is arranged at the rear end of the first mounting cavity 43. The front end of the first bolt 34 penetrates through the side wall of the first mounting cavity 43 and is inserted into the first threaded groove 38. The front end of the first bolt 34 can be provided with a hemispherical or conical shape which is adapted to the first threaded groove 38, so as to improve the smoothness of transmission. The first bolt 34 and the second control rod 35 can relatively move. The first baffle plate 40 is arranged in the first mounting cavity 43 to limit the first bolt 34 from sliding out of the first mounting cavity 43. The third spring 33 acts on the first sealing plate 32 at one end and acts on the first baffle plate 40 at the other end. The third spring 33 provides a pre-tightening force to ensure that the first bolt 34 is always in contact with the first threaded groove 38, thereby preventing transmission failure caused by vibration or clearance. The stiffness of the third spring 33 is matched with the pitch of the first threaded groove 38, so as to avoid the first bolt 34 being stuck due to too large stiffness, or transmission delay due to too small stiffness. The elastic buffering effect of the third spring 33 can also absorb part of the vibration energy, thereby reducing the transmission noise. When the first threaded groove 38 rotates, the vertical displacement of the first bolt 34 is limited, so that the first bolt 34 can only move upward or downward relative to the spiral direction, thereby realizing the linear movement of the first control rod 21 and the second control rod 35.

[0043] The second extension section 65 of the third control rod 52 is integrally formed on the side away from the power part, and a second bending section 66 is arranged on the inner wall of the waterway switching valve seat two, which is matched with the second extension section 65. The second bending section 66 hinders the second extension section 65 from moving downward, thereby limiting the displacement range of the third control rod 52 moving downward. The second installation cavity 64 is arranged on the third control rod 52 and the second extension section 65, and the second sealing plate 62 is arranged at the rear end of the second installation cavity 64. The front end of the second bolt 76 penetrates through the side wall of the second installation cavity 64 and is inserted into the second threaded groove 70. The front end of the second bolt 76 can be semispherical or conical to match the second threaded groove 70, thereby improving the smoothness of transmission. The second bolt 76 can relatively move with the third control rod 52. The second baffle 67 is arranged in the second installation cavity 64 to prevent the second bolt 76 from sliding out of the second installation cavity 64. The sixth spring 63 is arranged at one end of the second sealing plate 62 and the other end of the second baffle 67. The sixth spring 63 provides a pre-tightening force to ensure that the second bolt 76 is always in contact with the second threaded groove 70, thereby preventing transmission failure caused by vibration or clearance. The stiffness of the sixth spring 63 is matched with the pitch of the second threaded groove 70 to avoid the second bolt 76 being stuck due to too large stiffness or transmission delay due to too small stiffness. The elastic buffering effect of the sixth spring 63 can also absorb part of the vibration energy to reduce transmission noise. When the second threaded groove 70 rotates, the second bolt 76 can only move upward or downward relative to the spiral direction due to the vertical displacement being limited, thereby realizing the linear movement of the third control rod 52 and the fourth control rod 68.

[0044] Further, the power part includes a fixed seat 06 and a drive gear 47. The lower end of the fixed seat 06 is connected with the drive gear 47. The output shaft 02 of the drive motor 01 penetrates through the drive gear 47 and the fixed seat 06. The transmission part one includes a first stud 04. The first stud 04 is movably sleeved with the first support column 05 on the pump head body. The outer wall of the first stud 04 is provided with a first thread 36. The first thread 36 and the side wall of the first stud 04 form a first threaded groove 38. The lower end of the first stud 04 is provided with a first driven gear 39 which is engaged with the drive gear 47. The transmission part two includes a second stud 72. The second stud 72 is movably sleeved with the second support column 73 on the pump head body. The outer wall of the second stud 72 is provided with a second thread 74. The second thread 74 and the side wall of the second stud 72 form a second threaded groove 70. The lower end of the second stud 72 is provided with a second driven gear 75 which is engaged with the drive gear 47.

[0045] Specifically, as shown in FIG. 1, the waterway switching valve seat one includes a first control rod 51 and a second control rod 52. The first control rod 51 is arranged on the left side of the waterway switching valve seat one, and the second control rod 52 is arranged on the right side of the waterway switching valve seat one. Figure 1 , Figure 2 , Figure 3As shown, the fixed seat 06 is integrally formed with the drive gear 47, and the fixed seat 06 and the drive gear 47 are connected with the output shaft 02 and cannot rotate relative to each other. The rotation of the output shaft 02 of the drive motor 01 can drive the rotation of the drive gear 47. The rotation of the drive gear 47 drives the rotation of the first driven gear 39 and the second driven gear 75 meshed with the drive gear 47. The first driven gear 39 and the second driven gear 75 drive the rotation of the first stud 04 and the second stud 72, respectively. The rotation of the first stud 04 drives the rotation of the first screw thread 36, and further drives the upward movement or downward movement of the first bolt 34 along the screw thread. The rotation of the second stud 72 drives the rotation of the second screw thread 74, and further drives the upward movement or downward movement of the second bolt 76 along the screw thread. The upward movement or downward movement of the first bolt 34 and the second bolt 76 depends on the rotation direction of the output shaft 02 of the drive motor 01. When the output shaft 02 rotates clockwise, the first bolt 34 and the second bolt 76 move upward. When the output shaft 02 rotates counterclockwise, the first bolt 34 and the second bolt 76 move downward. Figure 4 、 Figure 6 As shown, the first screw thread 36 is helically arranged on the outer wall of the first stud 04, and the second screw thread 74 is helically arranged on the outer wall of the second stud 72. The outer wall of the first stud 04 and the second stud 72 has a smooth surface at the upper end. When the first bolt 34 moves upward to the tail of the first screw thread groove 38, the first bolt 34 will not move upward any more due to the loss of the guidance of the first screw thread groove 38. Similarly, when the second bolt 76 moves upward to the tail of the second screw thread groove 70, the second bolt 76 will not move upward any more due to the loss of the guidance of the second screw thread groove 70.

[0046] When the drive motor 01 reverses, the first bolt 34 moves downward along the first screw thread groove 38, and the second bolt 76 moves downward along the second screw thread groove 70. The downward movement of the first bolt 34 drives the downward movement of the second control rod 35, and the downward movement of the second bolt 76 drives the downward movement of the fourth control rod 68. The downward movement of the second control rod 35 and the fourth control rod 68 compresses the second spring 37 and the fifth spring 69, respectively, to store elastic potential energy for the subsequent upward movement of the two control rods.

[0047] Further, the first support column 05 is provided with a first limiting bolt 03 at the top to limit the disengagement of the first stud 04 and the first support column 05. The second support column 73 is provided with a second limiting bolt 71 at the top to limit the disengagement of the second stud 72 and the second support column 73.

[0048] Specifically, the first support column 05 is integrally formed with the inner wall of the pump head body. The first support column 05 is provided with a downwardly threaded hole at the top. When the first stud 04 is sleeved on the outer wall of the first support column 05, the first limiting bolt 03 is threadedly connected in the threaded hole. The head part of the first limiting bolt 03 is larger than the diameter of the first support column 05, so as to limit the first stud 04 and avoid the disengagement of the first stud 04 and the first support column 05.

[0049] Similarly, the second support column 73 is integrally formed with the inner wall of the pump head body, and a downwardly threaded hole is formed at the top of the second support column 73. When the second threaded column 72 is sleeved on the outer wall of the second support column 73, the second limiting bolt 71 is threadedly connected in the threaded hole. The screw head part of the second limiting bolt 71 is larger than the diameter of the second support column 73, so as to limit the second threaded column 72 and avoid the second threaded column 72 from being separated from the second support column 73.

[0050] Further, the pump head body comprises an upper shell 11 and a lower shell 07. The upper end of the upper shell 11 is sealingly connected with the first pump cover 18 and the second pump cover 77, and the lower end is connected with the lower shell 07. The lower shell 07 is connected with the shell of the driving motor 01. The upper shell 11 is provided with a pump water chamber 12 connected with the water outlet chamber 48 and the water inlet chamber 14. The pump water chamber 12 is provided with an impeller 13 connected with the output shaft 02 of the driving motor 01. The first pump cover 18 and the upper shell 11 are provided with a fourth sealing ring 16. The second pump cover 77 and the upper shell 11 are provided with a tenth sealing ring 78. The upper shell 11 and the lower shell 07 are provided with a support plate 09. The support plate 09 and the upper shell 11 are provided with a fifth sealing ring 10. The output shaft 02 passes through the support plate 09 and is connected with the impeller 13. The support plate 09 is embedded with a sixth sealing ring 08 located on both sides of the output shaft 02.

[0051] Specifically, in the existing impeller pump, the driving motor 01 is arranged at the bottom of the lower shell 07. The output shaft 02 of the driving motor 01 extends upwardly through the support plate 09 to the pump water chamber 12 and is connected with the impeller 13 of the pump water chamber 12. The support plate 09 and the upper shell 11 surround the pump water chamber 12. The fifth sealing ring 10 seals the installation gap between the first pump cover 18 and the upper shell 11. The tenth sealing ring 78 seals the installation gap between the second pump cover 77 and the upper shell 11. The sixth sealing ring 08 seals the gap between the output shaft 02 and the support plate 09, so as to prevent the water in the pump water chamber 12 from entering the driving motor 01 below. The water in the water inlet chamber 14 enters the pump water chamber 12 along the axial direction of the impeller 13. After the source water enters the pump water chamber 12, the centrifugal force generated by the high-speed rotation of the impeller 13 pumps the water to the water outlet. This belongs to the conventional structure and working principle of the existing impeller pump.

[0052] The working principle of the present application: the output shaft 02 of the driving motor 01 rotates clockwise to drive the impeller 13 to rotate. Taking the initial state of the water inlet cavity 14 and the second water inlet 27 as an example, the water path is sealed, and the water outlet cavity 48 and the second water outlet 46 are sealed. The output shaft 02 rotates clockwise to drive the driving gear 47 to rotate, which drives the first driven gear 39 and the second driven gear 75 to rotate. The first stud 04 and the second stud 72 rotate with the first driven gear 39 and the second driven gear 75, respectively. The first thread 36 and the second thread 74 on the side wall of the first stud 04 and the second stud 72 also rotate. The first pin 34 and the second pin 76 are respectively abutted in the first threaded groove 38 and the second threaded groove 70. The first thread 36 and the second thread 74 are respectively lifted by the first pin 34 and the second pin 76, which in turn drives the second control rod 35 and the fourth control rod 68 to move upwards. The second control rod 35 moves upwards to push the first control rod 21 upwards and compresses the first spring 23. The fourth control rod 68 moves upwards to push the third control rod 52 upwards and compresses the fourth spring 54. When the first control rod 21 moves upwards to the first sealing ring 22 to seal the water inlet 50, the water path between the water outlet cavity 48 and the first water outlet 45 is blocked. When the third control rod 52 moves upwards to the seventh sealing ring 53 to seal the water inlet 19, the water path between the water outlet cavity 48 and the first water outlet 45 is blocked. At this time, the second sealing ring 25 moves to the water path connection position of the water inlet 19, and the eighth sealing ring 56 moves to the water path connection position of the water inlet 55. The water inlet cavity 14 is connected to the second water inlet 27 through the second water passage 26 and the third water passage 28. The water outlet cavity 48 is connected to the second water outlet 46 through the fifth water passage 57 and the sixth water passage 59. The source water is transported to the water inlet cavity 14 through the second water inlet 27, the second water passage 26 and the third water passage 28, and then enters the pump water cavity 12 along the axial direction of the impeller 13. The rotation of the impeller 13 pumps the water in the pump water cavity 12 to the water outlet cavity 48, and then transports it to the second water outlet 46 through the fifth water passage 57 and the sixth water passage 59.

[0053] When water needs to be discharged from the first water outlet 45, the driving motor 01 reverses to drive the driving gear 47 to reverse, and the driving gear 47 drives the first driven gear 39 and the second driven gear 75 to reverse, thereby driving the first stud 04 and the second stud 72 to reverse, so that the first latch 34 and the second latch 76 move downward, the first latch 34 drives the second control rod 35 to move downward and compress the second spring 37, and the second latch 76 drives the fourth control rod 68 to move downward and compress the fifth spring 69. At the same time, the first spring 23 also pushes the first control rod 21 downward, and the fourth spring 54 pushes the third control rod 52 downward. After the first control rod 21 moves down to the first sealing ring 22 and the first guide cavity 44 are disengaged, the water channel at the water sealing port 19 is connected, and the water inlet cavity 14 is connected to the first water inlet 17 through the first water trough 20. The second control rod 35 moves down to the seventh sealing ring 53 and the fourth guide cavity 49 are disengaged. , the water channel at the third water sealing port 50 is connected, and the water outlet chamber 48 is connected to the first water inlet 17 through the fourth water trough 51. At the same time, the second sealing ring 25 moves down to contact the water sealing port 2 24 formed by the inner wall of the water channel switching valve seat. The second sealing ring 25 seals the water channel at the water sealing port 2 24, that is, the second sealing ring 25 seals the water channel between the water inlet chamber 14 and the second water inlet 27. The eighth sealing ring 56 moves down to contact the water sealing port 4 55 formed by the inner wall of the water channel switching valve seat. The eighth sealing ring 56 seals the water channel at the fourth water sealing port 55, that is, the eighth sealing ring 56 seals the water channel between the water outlet chamber 48 and the second water outlet 46. At this time, the source water is transported to the water inlet chamber 14 through the first water inlet 17 and the first water trough 20, and then enters the pump water chamber 12 along the axial direction of the impeller 13. The impeller 13 rotates to transport the water in the pump water chamber 12 to the water outlet chamber 48, and then outputs it through the fourth water trough 51 and the first water outlet 45. By driving the motor 0101 forward and reverse, the first control rod 21, the second control rod 35, the third control rod 52, and the fourth control rod 68 can be reciprocated up and down, and then the impeller pump can be selected according to demand to purify water from the first water inlet 17 or the second water inlet 27, and pump water to the first water outlet 45 or the second water outlet 46. The same pump can realize two-way water inlet and two-way water outlet, without the need to connect multiple pumps in parallel, thereby reducing energy consumption, reducing space occupancy, and reducing costs.

[0054] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A double-inlet and double-outlet impeller pump, comprising a pump head body, wherein the pump head body is provided with a water inlet cavity (14) and a water outlet cavity (48), and the pump head body is provided with a first pump cover (18) and a second pump cover (77), characterized in that: The pump head body further comprises a waterway switching valve seat 1 and a waterway switching valve seat 2 respectively located on the water inlet and water outlet waterways, a first water inlet (17) being provided on the first pump cover (18), a first water outlet (45) being provided on the second pump cover (77), a second water inlet (27) being provided on the waterway switching valve seat 1, a second water outlet (46) being provided on the waterway switching valve seat 2, a power unit, a transmission unit 1 and a transmission unit 2 being provided in the pump head body, the waterway switching valve seat 1 including the switching unit 1, the waterway switching valve seat 2 including the switching unit 2, one side of the transmission unit 1 and the transmission unit 2 being movably connected to the power unit, and the other sides of the transmission unit 1 and the transmission unit 2 being connected to the switching unit 1 and the switching unit 2 respectively. The power unit drives the transmission unit 1 and the transmission unit 2 to rotate. The rotation of the transmission unit 1 and the transmission unit 2 drives the switching unit 1 and the switching unit 2 to perform vertical reciprocating linear motion respectively. The linear motion of the switching unit connects or blocks the water path between the water inlet chamber (14) and the first water inlet (17) and the second water inlet (27). The linear motion of the switching unit 2 connects or blocks the water path between the water outlet chamber (48) and the first water outlet (45) and the second water outlet (46). The on-off state of the water inlet chamber (14) and the first water inlet (17) and the second water inlet (27) corresponds to the on-off state of the water outlet chamber (48) and the first water outlet (45) and the second water outlet (46).

2. A double-inlet and double-outlet impeller pump according to claim 1, characterized in that: The switching part 1 is located on a water path connecting the water inlet chamber (14) with the first water inlet (17) and the second water inlet (27); the switching part 2 is located on a water path connecting the water outlet chamber (48) with the first water outlet (45) and the second water outlet (46); the power part is connected to the output shaft (02) of the driving motor (01) of the impeller pump; an elastic force transmission member 1 is movably provided on one side wall of the switching part; an elastic force transmission member 2 is movably provided on the side wall of the switching part; a first thread groove (38) is provided on one side wall of the transmission part; a second thread groove (70) is provided on the side wall of the transmission part; one end of the elastic force transmission member 1 and the elastic force transmission member 2 are respectively abutted against the first thread groove (38) and the second thread groove (70).

3. A double-inlet and double-outlet impeller pump according to claim 2, characterized in that: The switching part includes a first control rod (21), a second control rod (35), a first spring (23), and a second spring (37) movably arranged in a waterway switching valve seat. The lower end of the first control rod (21) abuts against the upper end of the second control rod (35). One end of the first spring (23) acts on the inner top wall of the waterway switching valve seat, and the other end acts on the first control rod (21). One end of the second spring (37) acts on the inner bottom wall of the waterway switching valve seat, and the other end acts on the second control rod (35). A first sealing ring ( 22), a second sealing ring (25), the water inlet chamber (14) and the first water inlet (17) are connected to the water path to form a sealing water port 1 (19), and the water surface connected to the second water inlet (27) is formed to form a sealing water port 2 (24), the power unit rotates to drive the elastic force transmission member 1 to move up and down and drive the second control rod (35) and the first control rod (21) to move up and down reciprocatingly, and the first control rod (21) moves up and down reciprocatingly to change the position of the first sealing ring (22) and the second sealing ring (25) to connect or block the water path at the sealing water port 1 (19) and the sealing water port 2 (24); The switching part 2 includes a third control rod (52), a fourth control rod (68), a fourth spring (54), and a fifth spring (69) movably arranged in the waterway switching valve seat 2. The lower end of the third control rod (52) abuts against the upper end of the fourth control rod (68). One end of the fourth spring (54) acts on the top wall of the waterway switching valve seat 2, and the other end acts on the third control rod (52). One end of the fifth spring (69) acts on the bottom wall of the waterway switching valve seat 2, and the other end acts on the fourth control rod (68). The seventh sealing ring (5) is embedded in the side wall of the third control rod (52). 3), the eighth sealing ring (56), the water outlet chamber (48) is connected to the first water outlet (45) to form a water sealing port three (50), and the water portion connected to the second water outlet (46) is formed to form a water sealing port four (55), the power unit rotates to drive the elastic force transmission member two to move up and down and drive the fourth control rod (68) and the third control rod (52) to move up and down reciprocatingly, and the third control rod (52) moves up and down reciprocatingly to change the position of the seventh sealing ring (53) and the eighth sealing ring (56) to connect or block the water path at the water sealing port three (50) and the water sealing port four (55).

4. A double-inlet and double-outlet impeller pump according to claim 3, characterized in that: The first control rod (21) is provided with a first water trough (20) connected to the first water inlet (17) on the upper side wall, the first control rod (21) is provided with a second water trough (26) connected to the second water inlet (27) on the lower side wall, the second control rod (35) is provided with a third water trough (28) connected to the second water inlet (27) and the second water trough (26) on the upper side wall, the first sealing ring (22) and the second sealing ring (25) are located between the first water trough (20) and the second water trough (26), and the first sealing ring (22) is located above the second sealing ring (25), and the second control rod (35) is provided with a third sealing ring (30) located below the third water trough (28); The side wall of the upper end of the third control rod (52) is provided with a fourth water trough (51) connected to the first water outlet (45), the lower end of the third control rod (52) is provided with a fifth water trough (57) connected to the second water outlet (46), the side wall of the upper end of the third control rod (52) is provided with a sixth water trough (59) connected to the second water outlet (46) and the third water trough (28), the seventh sealing ring (53) and the eighth sealing ring (56) are located between the third water trough (28) and the fourth water trough (51), and the seventh sealing ring (53) is located above the eighth sealing ring (56), and the side wall of the upper end of the third control rod (52) is provided with a ninth sealing ring (60) located below the sixth water trough (59).

5. The double-inlet and double-outlet impeller pump according to claim 4, characterized in that: The side wall of the first control rod (21) is provided with a first limiting plate (15) located between the first sealing ring (22) and the second sealing ring (25), and the lower end of the first spring (23) acts on the first limiting plate (15); A second limiting plate (15) is provided on the side wall of the third control rod (52) and is located between the seventh sealing ring (53) and the eighth sealing ring (56). The lower end of the fourth spring (54) acts on the second limiting plate (15).

6. The double-inlet and double-outlet impeller pump according to claim 3, characterized in that: The waterway switching valve seat is provided with a first guide cavity (44), a second guide cavity (29), and a third guide cavity (31) from top to bottom. The first guide cavity (44) is connected to the first water inlet (17), and the second guide cavity (29) is connected to the second water inlet (27). The upper end of the first control rod (21) is slidably inserted into the first guide cavity (44), one end of the second control rod (35) is slidably inserted into the second guide cavity (29), and the other end is slidably inserted into the third guide cavity (31). The lower end of the second spring (37) acts on the bottom wall of the third guide cavity (31). A fourth guide chamber (49), a fifth guide chamber (58), and a sixth guide chamber (61) are provided in the waterway switching valve seat 2 from top to bottom. The fourth guide chamber (49) is connected to the first water outlet (45), and the fifth guide chamber (58) is connected to the second water outlet (46). The upper end of the third control rod (52) is slidably inserted in the fourth guide chamber (49), one end of the fourth control rod (68) is slidably inserted in the fifth guide chamber (58), and the other end is slidably inserted in the sixth guide chamber (61). The lower end of the fifth spring (69) acts on the bottom wall of the sixth guide chamber (61).

7. The double-inlet and double-outlet impeller pump according to claim 3, characterized in that: The elastic force transmission member includes a first latch (34), a third spring (33), and a first closing plate (32); a side wall of the second control rod (35) is provided with a transverse first mounting cavity (43); the first mounting cavity (43) extends in a direction away from the power unit; the first closing plate (32) is connected to the rear end of the first mounting cavity (43); one end of the first latch (34) passes through the first mounting cavity (43) and abuts against the first thread groove (38); and a side wall of the first latch (34) is provided with a first baffle (40) for limiting the first latch (34) from sliding out of the first mounting cavity (43); The second elastic force transmission member includes a second latch (76), a sixth spring (63), and a second closing plate (62). The side wall of the fourth control rod (68) is provided with a transverse second mounting cavity (64). The second mounting cavity (64) extends in a direction away from the power unit. The second closing plate (62) is connected to the rear end of the second mounting cavity (64). One end of the second latch (76) passes through the second mounting cavity (64) and abuts against the second threaded groove (70). The side wall of the second latch (76) is provided with a second baffle (67) for limiting the second latch (76) from sliding out of the second mounting cavity (64).

8. The double-inlet and double-outlet impeller pump according to claim 2, characterized in that: The power unit includes a fixed seat (06) and a driving gear (47), the lower end of the fixed seat (06) is connected to the driving gear (47), the output shaft (02) of the driving motor (01) passes through the driving gear (47) and the fixed seat (06), the transmission unit includes a first stud (04), the first stud (04) is movably connected to the first support column (05) on the pump head body, a first screw thread (36) is provided on the outer wall of the first stud (04), a first screw thread groove (38) is formed between the first screw thread (36) and the side wall of the first stud (04), and a first driven gear (39) meshing with the driving gear (47) is provided at the lower end of the first stud (04); The second transmission part includes a second stud (72), which is movably connected to the second support column (73) on the pump head body, and a second screw thread (74) is provided on the outer wall of the second stud (72). A second screw thread groove (70) is formed between the second screw thread (74) and the side wall of the second stud (72). The lower end of the second stud (72) is provided with a second driven gear (75) that meshes with the driving gear (47).

9. The double-inlet and double-outlet impeller pump according to claim 8, characterized in that: A first limiting bolt (03) is provided on the top of the first support column (05) to limit the first stud (04) from being separated from the first support column (05); and a second limiting bolt (71) is provided on the top of the second support column (73) to limit the second stud (72) from being separated from the second support column (73).

10. The double-inlet and double-outlet impeller pump according to claim 1, characterized in that: The pump head body comprises an upper shell (11) and a lower shell (07), wherein the upper end of the upper shell (11) is sealedly connected to the first pump cover (18) and the second pump cover (77), and the lower end is connected to the lower shell (07), and the lower shell (07) is connected to the housing of the drive motor (01). A water pumping chamber (12) connected to the water outlet chamber (48) and the water inlet chamber (14) is provided in the upper shell (11), and an impeller (13) connected to the output shaft (02) of the drive motor (01) is provided in the water pumping chamber (12). The first pump cover ( A fourth sealing ring (16) is provided between the second pump cover (77) and the upper housing (11), a tenth sealing ring (78) is provided between the second pump cover (77) and the upper housing (11), a support plate (09) is provided between the upper housing (11) and the lower housing (07), a fifth sealing ring (10) is provided between the support plate (09) and the upper housing (11), the output shaft (02) passes through the support plate (09) and is connected to the impeller (13), and a sixth sealing ring (08) is embedded in the support plate (09) and is located on both sides of the output shaft (02).

Images