Bidirectional combined pump with heat dissipation function

Abstract

The bidirectional combined pump with the heat dissipation function comprises motor shells and a pump body, one sides of the two motor shells are fixedly connected through a connecting cover, the other sides of the two motor shells are fixedly connected through a connecting plate, the ends of the motor shells are fixedly connected with one end of the pump body in a sealed mode, and the other end of the pump body is fixedly connected with a pump cover in a sealed mode. A pump cavity is formed in the pump body, the gear assembly is rotationally arranged in the pump cavity, the gear assembly is fixedly connected with one end of the output shaft, the other end of the output shaft penetrates through the pump body and then is fixedly connected with a rotating part of the stator and rotor assembly, and a fixed part of the stator and rotor assembly is fixedly arranged on the inner wall of the motor shell. A first liquid cavity and a second liquid cavity which are matched with the gear assembly are formed in the pump cavity, and the first liquid cavity and the second liquid cavity communicate with the interior of the motor shell through pressure relief channels correspondingly. The combined pump not only can realize bidirectional rotation, but also has a better heat dissipation function, can be used for a long time, is small in occupied space, and meets the requirements of compact equipment.

Description

Technical Field

[0001] The invention relates to the field of combined pumps, in particular to a bidirectional combined pump with a heat dissipation function. Background Art

[0002] Among the combination pumps in the prior art, some combination pumps can achieve bidirectional rotation. Since the motor will heat up due to long-term high-power output, an additional heat dissipation structure is required on the combination pump, resulting in a larger overall structure of the combination pump and occupying a larger space. Some combination pumps have better heat dissipation function, but cannot achieve bidirectional rotation. Therefore, two pumps are used in combination, which also occupies a larger space. For compact equipment, these two types of combination pumps cannot meet the needs due to the large space they occupy. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a two-way combined pump with a heat dissipation function.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A two-way combined pump with heat dissipation function comprises a connecting cover, a connecting plate, a motor housing, a pump body, a pump cover, an output shaft, a stator-rotor assembly, a one-way flow guide assembly and a gear assembly, one side of the two motor housings is fixedly connected through the connecting cover, and the other side thereof is fixedly connected through the connecting plate, the end of the motor housing is sealed and fixedly connected to one end of the pump body, and the other end of the pump body is sealed and fixedly connected to the pump cover, a pump cavity is arranged in the pump body, the gear assembly is rotatably arranged in the pump cavity and cooperates with the pump cavity, the gear assembly is fixedly connected to one end of the output shaft, and the other end of the output shaft is fixedly connected to the rotating part of the stator-rotor assembly after passing through the pump body, the fixed part of the stator-rotor assembly is fixedly arranged on the inner wall of the motor housing, a first liquid cavity and a second liquid cavity cooperating with the gear assembly are arranged in the pump cavity, the first liquid cavity and the second liquid cavity are respectively communicated with the interior of the motor housing through a pressure relief channel, and the one-way flow guide assembly that cannot flow into the motor housing is sealed and arranged on the pressure relief channel.

[0006] Further, the gear assembly includes a driving gear, a driven gear, a crescent plate, a crescent side plate, a spring, an elastic rod and a connecting block, the driven gear is rotatably arranged in the pump chamber and cooperates with the pump chamber, the driving gear is fixedly arranged on the output shaft, and the inner teeth of the driven gear are meshed with the outer teeth of the driving gear, the crescent plate is arranged between the driving gear and the driven gear, a penetrating crescent groove is arranged on the outer wall of the crescent plate, the crescent side plates cooperating with the driven gear are symmetrically arranged on both sides of the crescent groove, a movable groove cooperating with the crescent side plate is arranged in the crescent groove, the spring is arranged on the bottom of the movable groove, the elastic rod is arranged between the spring and the crescent side plate, the first liquid chamber and the second liquid chamber are arranged between the driving gear and the driven gear and are located at the two end sides of the crescent plate, and the crescent plate is connected to the pump body and / or the pump cover through the connecting block.

[0007] Furthermore, first drainage slopes cooperating with the crescent side plates are provided at both ends of the crescent groove, second drainage slopes cooperating with the first drainage slopes are provided at the four corners of the crescent side plates, and anti-collision slopes cooperating with the driven gear are provided on both sides of the outer wall of the crescent side plates.

[0008] Furthermore, a wear-resistant ring is arranged between the inner wall of the pump chamber and the outer wall of the driven gear, a first wear-resistant plate is arranged between the driven gear and the bottom of the pump chamber, a pressure relief hole cooperating with the pressure relief channel is arranged on the first wear-resistant plate, and a second wear-resistant plate is arranged between the driven gear and the pump cover.

[0009] Furthermore, the pump cover is provided with a first oil inlet and outlet hole and a second oil inlet and outlet hole, the first oil inlet and outlet hole is connected to the first liquid cavity, the second oil inlet and outlet hole is connected to the second liquid cavity, and the second wear-resistant plate is provided with two oil holes, the two oil holes respectively cooperate with the first oil inlet and outlet hole and the second oil inlet and outlet hole.

[0010] Furthermore, two first sealing rings are arranged between the second wear-resistant plate and the pump cover, the two first sealing rings are respectively matched with the first oil inlet and outlet holes and the second oil inlet and outlet holes, and a sealing convex ring is sealed on the inner wall of the first sealing ring.

[0011] Furthermore, the one-way flow guide component includes a limit sleeve, a return spring, a locking terminal and a plugging request. An installation cavity is provided on the bottom of the pump body, the pressure relief channel is connected with the bottom of the installation cavity, the limit sleeve is sealed and fixed in the installation cavity, the plugging request is seal-arranged on one end of the limit sleeve and seal-coordinated with the limit sleeve, the plugging request is arranged close to the motor housing side, the locking terminal is threadedly connected to the other end of the limit sleeve, the return spring is arranged between the locking terminal and the plugging request, and the locking terminal is provided with a penetrating pressure relief channel.

[0012] Furthermore, the stator-rotor assembly includes a motor stator, a motor rotor and a bearing sleeve, wherein the motor stator is fixedly arranged on the inner wall of the motor housing, the motor rotor is fixedly arranged on the output shaft and cooperates with the motor stator, the output shaft is arranged on the bearing sleeve through a bearing, and the bearing sleeve is fixedly arranged on the bottom of the motor housing.

[0013] Furthermore, a second sealing ring is provided between the motor housing and the pump body, a third sealing ring is provided between the two motor housings, a fourth sealing ring is provided between the connecting cover and the motor housing, and the third sealing ring is sealed and fixedly connected to the fourth sealing ring.

[0014] Furthermore, an inner groove is provided on the motor housing, and both ends of the connecting plate are connected to the inner groove.

[0015] The beneficial effects of the present invention are:

[0016] 1) In this technology, the combined pump can not only realize bidirectional rotation, but also has better heat dissipation function, can be used for a long time, and occupies a small space, meeting the needs of compact equipment.

[0017] 2) In this technology, one end of the pump body is sealed and fixedly connected to the pump cover, and the other end is directly sealed and fixedly connected to the motor housing, which makes the structure more compact and can be miniaturized. At the same time, the output shaft is inside the motor housing, pump body and pump cover, which will not cause liquid leakage.

[0018] 3) In this technology, two crescent side plates are symmetrically arranged on the crescent plate, so that the driving gear and the driven gear can not only rotate forward, but also rotate reversely, and both forward and reverse rotations can pressurize and output the liquid.

[0019] 4) In this technology, after the wear-resistant ring, the first wear-resistant plate and the second wear-resistant plate are provided, the driving gear and the driven gear will not directly contact the pump body and the pump cover, thus protecting the pump body and the pump cover.

[0020] 5) In this technology, the locking terminal has two functions. One is to install one end of the reset spring, and the other is to cooperate with the limit sleeve through the thread. The elastic force of the reset spring can be adjusted by rotating the locking terminal, which is also convenient for replacement when the reset spring fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The three-dimensional connection structure of this combined pump Figure 1 ;

[0022] Figure 2 The three-dimensional connection structure of this combined pump Figure 2 ;

[0023] Figure 3 This is the internal connection structure diagram of this combination pump;

[0024] Figure 4 This is a structural diagram of the connection of the one-way flow guide assembly in the pump body;

[0025] Figure 5 for Figure 4 The enlarged connection structure diagram at A;

[0026] Figure 6 is a connection structure diagram of the first sealing ring on the gear assembly;

[0027] Figure 7 It is a three-dimensional connection structure diagram of the gear assembly;

[0028] Figure 8 is a diagram of the connection structure between the first sealing ring and the sealing convex ring;

[0029] Fig. 9 It is a connection structure diagram between the crescent plate and the crescent side plate;

[0030] Fig.10 This is a structural diagram of the movable slot on the crescent plate;

[0031] Fig.11 is a diagram of the connection structure between the third sealing ring and the fourth sealing ring;

[0032] In the figure, 1-connection cover, 2-connection plate, 3-motor housing, 4-pump body, 5-pump cover, 6-output shaft, 7-first liquid chamber, 8-second liquid chamber, 9-pressure relief channel, 10-driving gear, 11-driven gear, 12-crescent plate, 13-crescent side plate, 14-spring sheet, 15-elastic rod, 16-connection block, 17-crescent groove, 18-movable groove, 19-first drainage slope, 20-second drainage slope, 21-anti-collision slope, 22-resistant Grinding ring, 23-first wear-resistant plate, 24-second wear-resistant plate, 25-first oil inlet and outlet hole, 26-second oil inlet and outlet hole, 27-oil through hole, 28-first sealing ring, 29-sealing convex ring, 30-limiting sleeve, 31-reset spring, 32-locking terminal, 33-sealing sleeve, 34-installation cavity, 35-motor stator, 36-motor rotor, 37-bearing sleeve, 38-second sealing ring, 39-third sealing ring, 40-fourth sealing ring, 41-inner groove. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-Figure 11 , the present invention provides a technical solution:

[0035] A two-way combined pump with heat dissipation function comprises a connecting cover 1, a connecting plate 2, a motor housing 3, a pump body 4, a pump cover 5, an output shaft 6, a stator-rotor assembly, a one-way flow guide assembly and a gear assembly. One side of the two motor housings 3 is fixedly connected through the connecting cover 1, and the other side thereof is fixedly connected through the connecting plate 2. The end of the motor housing 3 is sealed and fixedly connected to one end of the pump body 4, and the other end of the pump body 4 is sealed and fixedly connected to the pump cover 5. A pump cavity is arranged in the pump body 4, and the gear assembly is rotatably arranged in the pump cavity and cooperates with the pump cavity. The gear assembly is fixedly connected to one end of the output shaft 6, and the other end of the output shaft 6 is fixedly connected to the rotating part of the stator-rotor assembly after passing through the pump body 4. The fixed part of the stator-rotor assembly is fixedly arranged on the inner wall of the motor housing 3. A first liquid cavity 7 and a second liquid cavity 8 cooperating with the gear assembly are arranged in the pump cavity, and the first liquid cavity 7 and the second liquid cavity 8 are respectively communicated with the interior of the motor housing 3 through a pressure relief channel 9, and a one-way flow guide assembly that cannot flow into the motor housing 3 is sealed and arranged on the pressure relief channel 9. Among them, the connecting cover 1 has two functions, one is to fix one side of the two motor housings 3 together, and the other is to install the controller in the prior art. The two motor housings 3 are independently provided with stator-rotor assemblies and output shafts 6, and the controller controls the operation of the two stator-rotor assemblies in the prior art. The stator-rotor assembly provides power for the rotation of the output shaft 6, and the output shaft 6 drives the gear assembly to work. The function of the gear assembly is to discharge the liquid input at low pressure after pressurization. One end of the pump body 4 is sealed and fixedly connected to the pump cover 5, and the other end is directly sealed and fixedly connected to the motor housing 3, so that the structure is more compact and can be miniaturized. The output shaft 6 passes through the pump body 4 to drive the gear assembly to rotate, so the output shaft 6 and the rotating hole on the pump body 4 are in clearance. Part of the liquid after the gear assembly is pressurized enters the motor housing 3 through the clearance, and then the motor housing 3 is fully cooled. The liquid in the motor housing 3 enters the low-pressure chamber in the first liquid chamber 7 and the second liquid chamber 8 through the one-way flow guide assembly. When the output shaft 6 drives the gear assembly to rotate forward, the first liquid chamber 7 is the liquid inlet chamber, and the second liquid chamber 8 is the liquid discharge chamber after pressurization, so the liquid in the motor housing 3 enters the first liquid chamber 7 through the pressure relief channel 9 and the one-way flow guide assembly; when the output shaft 6 drives the gear assembly to rotate reversely, the second liquid chamber 8 is the liquid inlet chamber, and the first liquid chamber 7 is the liquid discharge chamber after pressurization, and the liquid in the motor housing 3 enters the second liquid chamber 8 through the pressure relief channel 9 and the one-way flow guide assembly. The two output shafts 6 in the two motor housings 3 are coaxially arranged. The output shaft 6 is inside the motor housing 3, the pump body 4 and the pump cover 5, so that no liquid leakage will occur.

[0036] In some embodiments, the gear assembly includes a driving gear 10, a driven gear 11, a crescent plate 12, a crescent side plate 13, a spring 14, an elastic rod 15 and a connecting block 16. The driven gear 11 is rotatably arranged in the pump chamber and cooperates with the pump chamber. The driving gear 10 is fixedly arranged on the output shaft 6, and the inner teeth of the driven gear 11 are meshed with the outer teeth of the driving gear 10. A crescent plate 12 is arranged between the driving gear 10 and the driven gear 11, and a crescent groove 17 is arranged on the outer wall of the crescent plate 12. On both sides of the crescent groove 17, crescent side plates 13 cooperating with the driven gear 11 are symmetrically arranged, and an active groove 18 cooperating with the crescent side plates 13 is arranged in the crescent groove 17. A spring sheet 14 is arranged at the bottom of the active groove 18, and an elastic rod 15 is arranged between the spring sheet 14 and the crescent side plates 13. The first liquid chamber 7 and the second liquid chamber 8 are arranged between the driving gear 10 and the driven gear 11 and at both ends of the crescent plate 12. The crescent plate 12 is connected to the pump body 4 or / and the pump cover 5 through a connecting block 16. Among them, two crescent side plates 13 are symmetrically arranged on the crescent plate 12, so that the driving gear 10 and the driven gear 11 can not only rotate forward, but also rotate reversely, and both forward and reverse rotations can pressurize the liquid. The elastic rod 15 is an elastic rubber roller in the prior art. Under the action of the spring sheet 14, the elastic rod 15 fully contacts the crescent plate 12 and the crescent side plates 13 to achieve sealing. One end of the driving gear 10, the driven gear 11, the crescent plate 12, the crescent side plate 13 and the elastic rod 15 are all in contact with the first wear-resistant plate 23, and the other ends of the driving gear 10, the driven gear 11, the crescent plate 12, the crescent side plate 13 and the elastic rod 15 are all in contact with the second wear-resistant plate 24. The two movable grooves 18 on the crescent plate 12 are symmetrically arranged. The inner side surface of the crescent plate 12 cooperates with the outer wall of the driving gear 10, and the outer walls of the two crescent side plates 13 cooperate with the inner wall of the driven gear 11. Mounting grooves are arranged on both sides of the middle part of the crescent plate 12, and connecting blocks 16 are arranged in the two mounting grooves. One connecting block 16 is connected to the pump body 4, and the other connecting block 16 is connected to the pump cover 5. The function of setting the connecting block 16 is to prevent the driving gear 10 and the driven gear 11 from rotating while also driving the crescent plate 12 to rotate.

[0037] In some embodiments, both ends of the crescent groove 17 are provided with first drainage slopes 19 that cooperate with the crescent side plate 13, and the four corners of the crescent side plate 13 are provided with second drainage slopes 20 that cooperate with the first drainage slopes 19. Both sides of the outer wall of the crescent side plate 13 are provided with anti-collision slopes 21 that cooperate with the driven gear 11. Among them, the function of providing the anti-collision slope 21 is to ensure that the driven gear 11 will not be stuck by the crescent side plate 13 during the forward or reverse rotation. A first drainage channel is formed between the second drainage slope 20 and the crescent groove 17 on the crescent plate 12, and a second drainage channel is formed between the first drainage slope 19 and the crescent side plate 13. The liquid enters the movable groove 18 through the first drainage channel and the second drainage channel, and then squeezes the elastic rod 15. After squeezing, the elastic rod 15 is better sealed with the crescent plate 12 and the crescent side plate 13, and the liquid is better pressurized and output.

[0038] In some embodiments, a wear-resistant ring 22 is provided between the inner wall of the pump chamber and the outer wall of the driven gear 11, a first wear-resistant sheet 23 is provided between the driven gear 11 and the bottom of the pump chamber, a pressure relief hole cooperating with the pressure relief channel 9 is provided on the first wear-resistant sheet 23, and a second wear-resistant sheet 24 is provided between the driven gear 11 and the pump cover 5. Among them, the driving gear 10 and the driven gear 11 will rotate during the working process, and the driving gear 10 and the driven gear 11 will cause wear to the pump body 4 and the pump cover 5 during the rotation process. After the wear-resistant ring 22, the first wear-resistant sheet 23 and the second wear-resistant sheet 24 are provided, the driving gear 10 and the driven gear 11 will not directly contact the pump body 4 and the pump cover 5, and the pump body 4 and the pump cover 5 are protected. The function of the pressure relief hole is to ensure that the liquid in the pressure relief channel 9 enters the first liquid chamber 7 or the second liquid chamber 8. The first wear-resistant plate 23 and the second wear-resistant plate 24 are both provided with stabilizing holes, and connecting blocks 16 are provided on both sides of the crescent plate 12. One connecting block 16 passes through the stabilizing hole on the first wear-resistant plate 23 and is fixedly connected to the pump body 4, and the other connects through the stabilizing hole on the second wear-resistant plate 24 and is fixedly connected to the pump cover 5. In this way, the crescent plate 12, the first wear-resistant plate 23 and the second wear-resistant plate 24 will not rotate in the pump chamber, and the positions of the pressure relief hole on the first wear-resistant plate 23 and the oil hole 27 on the second wear-resistant plate 24 will not change.

[0039] In some embodiments, a first oil inlet and outlet hole 25 and a second oil inlet and outlet hole 26 are provided on the pump cover 5, the first oil inlet and outlet hole 25 is connected to the first liquid chamber 7, the second oil inlet and outlet hole 26 is connected to the second liquid chamber 8, and two oil holes 27 are provided on the second wear-resistant plate 24, and the two oil holes 27 respectively cooperate with the first oil inlet and outlet hole 25 and the second oil inlet and outlet hole 26. Among them, when the output shaft 6 drives the driving gear 10 and the driven gear 11 to rotate forward, the liquid enters from the first inlet and outlet oil hole 25, and then enters the first liquid chamber 7 through an oil hole 27 on the second wear-resistant plate 24, and then enters the second liquid chamber 8 after the driving gear 10 and the driven gear 11 cooperate to pressurize the liquid, and finally passes through another oil hole 27 on the second wear-resistant plate 24 and is discharged from the second inlet and outlet oil hole 26; when the output shaft 6 drives the driving gear 10 and the driven gear 11 to rotate reversely, the liquid enters from the second inlet and outlet oil hole 26, and then enters the second liquid chamber 8 through an oil hole 27 on the second wear-resistant plate 24, and then enters the first liquid chamber 7 after the driving gear 10 and the driven gear 11 cooperate to pressurize the liquid, and finally passes through another oil hole 27 on the second wear-resistant plate 24 and is discharged from the first inlet and outlet oil hole 25.

[0040] In some embodiments, two first sealing rings 28 are arranged between the second wear-resistant sheet 24 and the pump cover 5, and the two first sealing rings 28 are respectively matched with the first oil inlet and outlet holes 25 and the second oil inlet and outlet holes 26, and a sealing convex ring 29 is sealed on the inner wall of the first sealing ring 28. Among them, the first sealing ring 28 and the sealing convex ring 29 are integrally formed, and the pump cover 5 is provided with two first sealing grooves matched with the first sealing ring 28, and the two first sealing rings 28 on the pump cover 5 are symmetrically arranged. The first sealing ring 28 not only seals with the pump cover 5, but also seals with the second wear-resistant sheet 24 under the action of the sealing convex ring 29. When matching with the second wear-resistant sheet 24, the first sealing ring 28 and the sealing convex ring 2 are fully in contact with the second wear-resistant sheet 24. Between the second wear-resistant sheet 24 and the pump cover 5, it can effectively prevent the liquid in the first oil inlet and outlet hole 25 from directly entering the second oil inlet and outlet hole 26, or it can effectively prevent the liquid in the second oil inlet and outlet hole 26 from directly entering the first oil inlet and outlet hole 25.

[0041] In some embodiments, the one-way flow guide assembly includes a limit sleeve 30, a reset spring 31, a locking terminal 32 and a plugging pin 33. An installation cavity 34 is provided on the bottom of the pump body 4. The pressure relief channel 9 is connected to the bottom of the installation cavity 34. The limit sleeve 30 is sealed and fixed in the installation cavity 34. The plugging pin 33 is sealed on one end of the limit sleeve 30 and seals with the limit sleeve 30. The plugging pin 33 is arranged close to the motor housing 3 side. The locking terminal 32 is threadedly connected to the other end of the limit sleeve 30. The reset spring 31 is arranged between the locking terminal 32 and the plugging pin 33. The locking terminal 32 is provided with a penetrating pressure relief channel. Among them, the limit sleeve 30 is sealed and fixed in the installation cavity 34, the plugging ball 33 is a stainless steel ball and is sealed with one end of the limit sleeve 30, the function of the reset spring 31 is to push the plugging ball 33, and the locking terminal 32 has two functions, one is to install one end of the reset spring 31, and the other is to thread with the limit sleeve 30. The force of the reset spring 31 is adjusted by rotating the locking terminal 32, and it is also convenient to replace when the reset spring 31 fails. The liquid in the motor housing 3 pushes the plugging ball 33 to move, and then enters the first liquid cavity 7 or the second liquid cavity 8 through the pressure discharge channel.

[0042] In some embodiments, the stator-rotor assembly includes a motor stator 35, a motor rotor 36 and a bearing sleeve 37. The motor stator 35 is fixedly arranged on the inner wall of the motor housing 3. The motor rotor 36 is fixedly arranged on the output shaft 6 and cooperates with the motor stator 35. The output shaft 6 is arranged on the bearing sleeve 37 through a bearing, and the bearing sleeve 37 is fixedly arranged on the bottom of the motor housing 3. Among them, the motor stator 35 and the motor rotor 36 are both prior art. Under the cooperation of the motor stator 35 and the motor rotor 36, the output shaft 6 on the motor stator 35 rotates in the motor housing 3. The bearing sleeve 37 is used to install the end of the output shaft 6. In order to reduce the friction force during the rotation of the output shaft 6, a deep groove ball bearing in the prior art is arranged between the output shaft 6 and the bearing sleeve 37. The motor housing 3, the output shaft 6, the motor stator 35, the motor rotor 36 and the bearing sleeve 37 are coaxially arranged.

[0043] In some embodiments, a second sealing ring 38 is provided between the motor housing 3 and the pump body 4, a third sealing ring 39 is provided between the two motor housings 3, a fourth sealing ring 40 is provided between the connection cover 1 and the motor housing 3, and the third sealing ring 39 and the fourth sealing ring 40 are sealed and fixedly connected. Among them, a controller in the prior art is installed between the motor housing 3 and the connection cover 1, and the controller controls the direction and speed of the stator and rotor assemblies in the two motor housings 3. The connection cover 1 is a sealed housing, and the third sealing ring 39 and the fourth sealing ring 40 are used to protect the controller to prevent water or dust from entering the connection cover 1 from the outside and causing damage to the controller. A through wire hole is provided on the bottom of the motor housing 3, and the wire electrically connected to the stator and rotor assembly is sealed with the wire hole. The motor housing 3 is always a sealed housing, and liquid will not leak after entering the motor housing 3. The ends of the two motor housings 3 are provided with a third sealing groove that cooperates with the third sealing ring 39, and the connection cover 1 is provided with a fourth sealing groove that cooperates with the fourth sealing ring 40. The third sealing ring 39 and the fourth sealing ring 40 are both rubber sealing rings in the prior art and are integrally formed. The second sealing ring 38 is provided to prevent the motor housing 3 and the pump body 4 from leaking due to a lack of sealing.

[0044] In some embodiments, an inner groove 41 is provided on the motor housing 3, and both ends of the connecting plate 2 are connected to the inner groove 41. Among them, two inner grooves 41 are symmetrically provided on both sides of the motor housing 3, and the two motor housings 3 are fixedly connected by two connecting plates 2. The ends of the connecting plates 2 can be directly fixed to the motor housing 3 by screws, or they can be connected by bolts. The two ends of the two connecting plates 2 are respectively fixedly connected by two bolts, and the motor housing 3 is provided with through holes that cooperate with the bolts. The inner groove 41 is provided so that the connecting plate 2 protrudes as little as possible from the outer surface of the motor housing 3, so that the combined pump connection is more compact.

[0045] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "one end", "top", "middle", "the other end", "coaxial", "one side", "inside", "front", "center", "both ends", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0046] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "setting", "installation", "connection", "fixation", "hinge" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0047] The above is only a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A two-way combined pump with heat dissipation function, characterized in that: The invention comprises a connecting cover (1), a connecting plate (2), a motor housing (3), a pump body (4), a pump cover (5), an output shaft (6), a stator-rotor assembly, a one-way flow guide assembly and a gear assembly. One side of the two motor housings (3) is fixedly connected via the connecting cover (1), and the other side thereof is fixedly connected via the connecting plate (2). The end of the motor housing (3) is sealed and fixedly connected to one end of the pump body (4), and the other end of the pump body (4) is sealed and fixedly connected to the pump cover (5). A pump cavity is arranged inside the pump body (4), and the gear assembly is rotatably arranged in the pump cavity and cooperates with the pump cavity. The gear assembly One end of the output shaft (6) is fixedly connected to the output shaft (6), and the other end of the output shaft (6) passes through the pump body (4) and is fixedly connected to the rotating part of the stator-rotor assembly. The fixed part of the stator-rotor assembly is fixedly arranged on the inner wall of the motor housing (3). The pump chamber is provided with a first liquid chamber (7) and a second liquid chamber (8) which cooperate with the gear assembly. The first liquid chamber (7) and the second liquid chamber (8) are respectively connected to the interior of the motor housing (3) through a pressure relief channel (9). The pressure relief channel (9) is sealed with the one-way flow guide component which cannot flow into the motor housing (3).

2. A two-way combined pump with heat dissipation function according to claim 1, characterized in that: The gear assembly comprises a driving gear (10), a driven gear (11), a crescent plate (12), a crescent side plate (13), a spring sheet (14), an elastic rod (15) and a connecting block (16); the driven gear (11) is rotatably arranged in the pump chamber and cooperates with the pump chamber; the driving gear (10) is fixedly arranged on the output shaft (6), and the inner teeth of the driven gear (11) are meshed with the outer teeth of the driving gear (10); the crescent plate (12) is arranged between the driving gear (10) and the driven gear (11); a penetrating crescent groove (17) is arranged on the outer wall of the crescent plate (12); and the two sides of the crescent groove (17) are provided with The crescent side plate (13) is symmetrically arranged to cooperate with the driven gear (11); a movable groove (18) is arranged in the crescent groove (17) to cooperate with the crescent side plate (13); the spring sheet (14) is arranged on the bottom of the movable groove (18); the elastic rod (15) is arranged between the spring sheet (14) and the crescent side plate (13); the first liquid chamber (7) and the second liquid chamber (8) are arranged between the driving gear (10) and the driven gear (11) and are located at both end sides of the crescent plate (12); the crescent plate (12) is connected to the pump body (4) and / or the pump cover (5) through the connecting block (16).

3. A two-way combined pump with heat dissipation function according to claim 2, characterized in that: Both ends of the crescent groove (17) are provided with first drainage slopes (19) cooperating with the crescent side plate (13); four corners of the crescent side plate (13) are provided with second drainage slopes (20) cooperating with the first drainage slopes (19); and both sides of the outer wall of the crescent side plate (13) are provided with anti-collision slopes (21) cooperating with the driven gear (11).

4. A two-way combined pump with heat dissipation function according to claim 2 or 3, characterized in that: A wear-resistant ring (22) is arranged between the inner wall of the pump chamber and the outer wall of the driven gear (11), a first wear-resistant plate (23) is arranged between the driven gear (11) and the bottom of the pump chamber, a pressure relief hole cooperating with the pressure relief channel (9) is arranged on the first wear-resistant plate (23), and a second wear-resistant plate (24) is arranged between the driven gear (11) and the pump cover (5).

5. A two-way combined pump with heat dissipation function according to claim 4, characterized in that: The pump cover (5) is provided with a first oil inlet and outlet hole (25) and a second oil inlet and outlet hole (26), the first oil inlet and outlet hole (25) is connected to the first liquid chamber (7), the second oil inlet and outlet hole (26) is connected to the second liquid chamber (8), and the second wear-resistant plate (24) is provided with two oil holes (27), the two oil holes (27) respectively cooperate with the first oil inlet and outlet hole (25) and the second oil inlet and outlet hole (26).

6. A two-way combined pump with heat dissipation function according to claim 5, characterized in that: Two first sealing rings (28) are arranged between the second wear-resistant plate (24) and the pump cover (5), and the two first sealing rings (28) respectively cooperate with the first oil inlet and outlet holes (25) and the second oil inlet and outlet holes (26), and a sealing convex ring (29) is sealed on the inner wall of the first sealing ring (28).

7. A two-way combined pump with heat dissipation function according to any one of claims 1 to 3, characterized in that: The one-way flow guide assembly comprises a limit sleeve (30), a return spring (31), a locking terminal (32) and a plugging member (33); an installation cavity (34) is provided at the bottom of the pump body (4); the pressure relief passage (9) is communicated with the bottom of the installation cavity (34); the limit sleeve (30) is sealed and fixedly arranged in the installation cavity (34); the plugging member (33) is sealed and arranged on one end of the limit sleeve (30) and is sealed and matched with the limit sleeve (30); the plugging member (33) is arranged close to the motor housing (3); the locking terminal (32) is threadedly connected to the other end of the limit sleeve (30); the return spring (31) is arranged between the locking terminal (32) and the plugging member (33); and the locking terminal (32) is provided with a penetrating pressure relief passage.

8. A two-way combined pump with heat dissipation function according to any one of claims 1 to 3, characterized in that: The stator-rotor assembly comprises a motor stator (35), a motor rotor (36) and a bearing sleeve (37); the motor stator (35) is fixedly arranged on the inner wall of the motor housing (3); the motor rotor (36) is fixedly arranged on the output shaft (6) and cooperates with the motor stator (35); the output shaft (6) is arranged on the bearing sleeve (37) through a bearing; and the bearing sleeve (37) is fixedly arranged on the bottom of the motor housing (3).

9. A two-way combined pump with heat dissipation function according to any one of claims 1 to 3, characterized in that: A second sealing ring (38) is provided between the motor housing (3) and the pump body (4), a third sealing ring (39) is provided between the two motor housings (3), a fourth sealing ring (40) is provided between the connecting cover (1) and the motor housing (3), and the third sealing ring (39) and the fourth sealing ring (40) are sealed and fixedly connected.

10. A two-way combined pump with heat dissipation function according to any one of claims 1 to 3, characterized in that: An inner groove (41) is provided on the motor housing (3), and both ends of the connecting plate (2) are connected to the inner groove (41).

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