Multiphase pump

Abstract

The utility model relates to the technical field of pumping devices, and provides a multiphase pump which is characterized in that a rotor is parallel to the rotation axis of a rotation cavity, the rotor is in sliding butt joint with the inner wall part of the rotation cavity, and an adjusting assembly slides in a mounting channel and is in butt joint with the rotor so as to separate an input channel from an output channel. When the rotor rotates in the rotary cavity, the space size of the rotary cavity is changed, the input channel, the output channel and the rotary cavity are sequentially communicated, and a working medium is sucked in from the input channel, pressurized in the rotary cavity and then discharged from the output channel. By means of the multiphase pump, multiphase working media can be conveyed, the number of separation devices and pipelines can be reduced, and therefore the conveying cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of pumping devices, and in particular to a mixed delivery pump. Background Art

[0002] During oil production, underground output includes crude oil, natural gas, condensate, sediment, flocculent matter, and various viscous substances. These outputs are transported to centralized processing stations through pressurized devices and pipelines.

[0003] The phase states of these downhole products are different. In related technologies, a separation pipeline transportation method is often used to separate the downhole products and then transport them to a processing station.

[0004] This separation pipeline transportation method leads to an increase in the number of separation equipment and pipelines, making it difficult to reduce transportation costs. Utility Model Content

[0005] The present application provides a mixed transfer pump that can reduce the number of separation equipment and pipelines and reduce costs.

[0006] In order to achieve the above objectives, this application adopts the following technical solutions:

[0007] The present application provides a mixed delivery pump, comprising:

[0008] A pump body, the pump body having a rotary cavity and a separately arranged input channel, an output channel and an installation channel, the input channel, the output channel and the installation channel intersecting the rotary cavity at the same point; along a first direction, the installation channel is located between the input channel and the output channel; the pump body has an input channel opening, an output channel opening and an installation channel opening; the input channel opening and the output channel opening are respectively arranged on both sides of the pump body along the first direction, and the installation channel opening is arranged on one side of the pump body along the second direction; the input channel is connected to the outside of the pump body through the input channel opening, the output channel is connected to the outside of the pump body through the output channel opening, and the installation channel is connected to the output channel through the installation channel opening;

[0009] a rotating shaft member, wherein the rotating shaft member is at least partially located in the rotating cavity, and an axis of the rotating shaft member located in the rotating cavity is parallel to the rotating axis of the rotating cavity;

[0010] a rotor, the rotor being sleeved on the rotating shaft member located in the rotating chamber, the axis of the rotor being parallel to the rotating axis of the rotating chamber and the axis of the rotating shaft member located in the rotating chamber, and the circumferential side surface of the rotor being in contact with a portion of the inner wall of the rotating chamber;

[0011] an adjustment assembly, the adjustment assembly being located in the mounting channel, a portion of the adjustment assembly separating the input channel and the output channel; one side of the adjustment assembly being in sliding abutment with a circumferential side wall of the rotor; and at least a portion of the adjustment assembly being movably disposed in the mounting channel along a second direction;

[0012] When the rotor rotates along with the rotating shaft around the rotation axis of the rotary chamber, the working medium enters the rotary chamber through the input channel and is discharged from the pump body through the output channel;

[0013] Wherein, the rotation axis of the rotary cavity is along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0014] As an optional embodiment, the adjustment assembly includes a separation sleeve and a separation plate, the separation sleeve is located in the installation channel and connects the input channel and the output channel, and one end of the separation sleeve facing away from the installation channel along the second direction abuts against the rotor;

[0015] The separation sleeve has a chute, the separation plate is at least partially located in the chute, and separates the input channel from the output channel; the separation plate is in contact with the rotor at one end thereof away from the separation sleeve along the second direction;

[0016] The partition plate slides relative to the sliding groove along the second direction.

[0017] As an optional embodiment, the adjustment assembly further includes an elastic member, the elastic member is at least partially located in the slide groove, and the elastic member abuts against the end of the partition plate facing away from the rotor.

[0018] As an optional embodiment, the adjustment assembly further includes a sealing cover plate and a first pipe joint, wherein the sealing cover plate is located at the opening of the installation channel and is connected to the pump body;

[0019] The first pipe joint is respectively provided on the sealing cover plate and the output channel to connect the installation channel opening and the output channel.

[0020] As an optional implementation, the mixed flow pump further includes a one-way valve, and the one-way valve is arranged at the output channel opening of the output channel.

[0021] As an optional embodiment, the rotating shaft comprises a first shaft segment, a second shaft segment and a third shaft segment, and the first shaft segment, the second shaft segment and the third shaft segment are sequentially connected along the third direction;

[0022] The rotary cavity is open on two opposite sides along the third direction, the second shaft segment passes through the rotary cavity, and the second shaft segment is parallel to the rotation axis of the rotary cavity; the first shaft segment and the third shaft segment are located outside the rotary cavity, and the axes of the first shaft segment and the third shaft segment both coincide with the rotation axis of the rotary cavity.

[0023] As an optional embodiment, the mixed flow pump further includes a bearing and a bearing seat, the bearings are respectively sleeved on the first shaft segment and the third shaft segment, and the bearing seats are respectively sleeved on the outer rings of the bearings on the first shaft segment and the third shaft segment; the bearing seat and the pump body are relatively fixedly connected.

[0024] As an optional embodiment, the rotating shaft has a lubrication channel, a lubrication channel inlet and a lubrication channel outlet, the lubrication channel inlet and the lubrication channel outlet are both connected to the lubrication channel, the lubrication channel inlet is provided at one end of the rotating shaft; the lubrication channel outlet is provided corresponding to the bearing;

[0025] The mixed feed pump further includes a second pipe joint, which is connected to the lubrication channel through the lubrication channel inlet; the second pipe joint is configured to supply lubrication medium to the lubrication channel.

[0026] As an optional embodiment, the mixed flow pump further includes an end cover, the end cover and the bearing seat are correspondingly arranged, and the end cover is engaged with the bearing seat.

[0027] As an optional embodiment, the mixed flow pump further includes a third pipe joint, which is provided on the pump body and communicates with the installation channel, and the outlet of the third pipe joint faces the regulating assembly;

[0028] The third pipe joint is configured to provide lubricating medium to the adjustment assembly.

[0029] The mixed flow pump provided herein has a rotating shaft and rotor eccentrically positioned relative to the center of rotation of a rotating chamber. Portions of the rotor's circumferential sidewalls abut against portions of the inner wall of the rotating chamber, i.e., the rotor and the rotating chamber are tangential at the abutment point, forming a crescent cavity between the inner wall of the rotating chamber and the rotor's circumferential sidewalls. As the rotor rotates around the rotating chamber's axis of rotation once, the volume of the crescent cavity first increases and then decreases. As the volume of the crescent cavity increases, the pressure within the crescent cavity decreases, allowing the working medium to be drawn into the crescent cavity through the input channel. As the volume of the crescent cavity decreases, the pressure within the crescent cavity increases, compressing the working medium and then discharging it to the outside of the pump body through the output channel. In this way, the mixed flow pump autonomously draws in the working medium through pressure changes within the crescent cavity, achieving pressurized pumping of the working medium, thereby reducing the layout of separation equipment and pipelines and lowering costs. The adjustment assembly abuts the rotor and reciprocates in a second direction within the mounting channel as the rotor rotates. The mounting channel and the output channel are connected through the mounting channel opening. This ensures that the pressure inside the output mounting channel is the same as the pressure inside the output channel, with the pressure inside the output channel being relatively higher. Under the action of high pressure, the regulating assembly's rotor moves within the mounting channel, maintaining contact between the regulating assembly and the rotor. This arrangement prevents internal leakage in the mixed-flow pump and improves its transport efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0031] Figure 1 A schematic diagram of a mixed delivery pump provided in an embodiment of the present application;

[0032] Figure 2 An exploded diagram of the mixed delivery pump provided in an embodiment of the present application;

[0033] Figure 3 A cross-sectional view of the mixed delivery pump provided in the embodiment of the present application Figure 1 ;

[0034] Figure 4 A cross-sectional view of the mixed delivery pump provided in the embodiment of the present application Figure 2 ;

[0035] Figure 5 A schematic diagram of a separator sleeve in a mixed flow pump provided in an embodiment of the present application;

[0036] Figure 6 for Figure 3 A partial enlarged view of the dotted box;

[0037] Figure 7 This is a schematic diagram of the rotating shaft in the mixed flow pump provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 100-mixed pump;

[0040] 110- pump body;

[0041] 111-input channel; 1111-input channel port;

[0042] 112-output channel; 1121-output channel port;

[0043] 113-installation channel; 1131-installation channel opening;

[0044] 114-crescent cavity; 115-sealing cover; 116-sealing ring; 117-positioning ring; 118-circlip; 119-second pipe joint;

[0045] 120 - rotating shaft; 121 - first shaft section; 122 - second shaft section; 123 - third shaft section;

[0046] 124-lubrication channel; 1241-lubrication channel inlet; 1242-lubrication channel outlet; 1243-spiral groove;

[0047] 130-rotor;

[0048] 140-adjustment component;

[0049] 141-separation sleeve; 1411-slide groove; 1412-communication hole; 1413-communication groove; 1414-installation groove;

[0050] 142-partition plate; 1421-groove; 1422-lubrication groove;

[0051] 143 - elastic member; 144 - sealing cover plate; 145, 145a, 145b - first pipe joint;

[0052] 150- one-way valve;

[0053] 160-bearing;

[0054] 170-bearing seat;

[0055] 180-end cover;

[0056] 190-Third pipe joint. DETAILED DESCRIPTION

[0057] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0058] During oil production, underground output includes crude oil, natural gas, condensate, sediment, flocculent matter, and various viscous substances. These outputs are transported to centralized processing stations through pressurized devices and pipelines.

[0059] The phase states of these downhole products are different. In related technologies, a separation pipeline transportation method is often used to separate the downhole products and then transport them to a processing station.

[0060] This separation pipeline transportation method leads to an increase in the number of separation equipment and pipelines, making it difficult to reduce transportation costs.

[0061] In order to overcome the defects in the prior art, an embodiment of the present application provides a mixed flow pump, in which the rotor is arranged parallel to the rotation axis of the rotary chamber, the rotor and the inner wall portion of the rotary chamber slide and abut against each other, and the adjustment component slides in the installation channel and abuts against the rotor to separate the input channel and the output channel. When the rotor rotates in the rotary chamber, the spatial size of the rotary chamber changes, and the input channel, output channel and rotary chamber are connected in sequence. The working medium is sucked into the input channel and pressurized in the rotary chamber before being discharged from the output channel. Such a mixed flow pump can transport multi-phase working media, which can reduce the number of separation equipment and pipelines, thereby reducing the cost of transportation.

[0062] The contents of this application will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the contents of this application more clearly and in detail.

[0063] like Figures 1-4 As shown, the first direction is defined as the Y direction, the second direction is defined as the Z direction, and the third direction is defined as the X direction.

[0064] The mixed flow pump 100 provided in the embodiments of the present application is capable of transporting a variety of working media in different phases, or single-phase liquids and gases. For example, a mixture of downhole outputs such as crude oil and natural gas in the oil field can serve as the working medium. This embodiment of the present application does not make specific requirements for this.

[0065] The mixed flow pump 100 includes a pump body 110, which has a rotary cavity with a circular cross-sectional profile. The rotary cavity's axis of rotation extends along a third direction (X). Pump body 110 is provided with a mutually independent input channel 111, output channel 112, and mounting channel 113. The input channel 111, output channel 112, and the channels are arranged sequentially along a first direction (Y).

[0066] Specifically, the input channel 111 and the output channel 112 are arranged opposite each other and connected along the first direction (Y). Along the first direction (Y), the mounting channel 113 is located between the input channel 111 and the output channel 112. The mounting channel 113 intersects the input channel 111 and the output channel 112. The mounting channel 113, the input channel 111, and the output channel 112 are connected to the rotary chamber at the interconnected points.

[0067] The side wall of the pump body 110 is also provided with an input channel opening 1111, an output channel opening 1121 and an installation channel opening 1131. Figure 3 The input channel opening 1111 and the output channel opening 1121 are arranged on opposite sides of the pump body 110 along the first direction (Y). The input channel 111 communicates with the exterior of the pump body 110 through the input channel opening 1111, and the output channel 112 communicates with the exterior of the pump body 110 through the output channel opening 1121. The installation channel 113 communicates with the output channel 112 through the installation channel opening 1131.

[0068] The mixed infusion pump 100 in the embodiment of the present application further includes a rotating shaft 120 , which extends along a third direction (X). The rotating shaft 120 has a circular cross-sectional profile and is partially located within the rotating cavity. It should be noted that the axis of the rotating shaft 120 located within the rotating cavity is parallel to the axis of the rotating cavity. In other words, the axis of this portion of the rotating shaft 120 is eccentrically disposed relative to the rotation center of the rotating cavity. It is readily understood that there is a distance between the axis of the rotating shaft 120 and the rotation center of the rotating cavity.

[0069] Optionally, the distance between the axis of the rotating shaft 120 and the rotation center of the rotating cavity may be 3 mm.

[0070] The pump body 110 in the embodiment of the present application also includes a rotor 130, which is located in the rotary chamber and connected to the rotating shaft 120. Exemplarily, the rotor 130 can be sleeved on the rotating shaft 120 and connected to the rotating shaft 120 by a key, such as a flat key. The key connection between the rotating shaft 120 and the rotor 130 can stably and effectively transfer torque to ensure the stable operation of the mixed flow pump 100. The flat key can evenly distribute the torque between the key and the keyway, thereby reducing local stress concentration, extending the service life of the rotating shaft 120 and the rotor 130, and further reducing the maintenance cost of the mixed flow pump 100.

[0071] It should be noted that the cross-section of rotor 130 is circular, and the axis of rotor 130 extends along the third direction (X). The axis of rotor 130 is parallel to the axis of rotation of the rotary chamber. In other words, the axis of rotor 130 is eccentric relative to the center of rotation of the rotary chamber. In this embodiment of the present application, the axis of rotor 130 is also parallel to the axis of the rotating shaft 120 located within the rotary chamber. In other words, rotor 130 is also eccentric relative to this portion of the rotating shaft 120.

[0072] In this way, a distance is formed between the axis of the rotor 130 and the rotation center of the rotary chamber, and the distance may be 5 mm.

[0073] In the embodiment of the present application, the rotating shaft 120 and the rotor 130 are eccentrically arranged relative to the rotation center of the rotary chamber, so that a portion of the circumferential sidewall of the rotor 130 abuts a portion of the inner wall of the rotary chamber. That is, the rotor 130 and the rotary chamber are tangent at the abutment point, and a crescent cavity 114 is formed between the inner wall of the rotary chamber and the circumferential sidewall of the rotor 130. As the rotor 130 rotates around the rotation axis of the rotary chamber one circle along with the rotating shaft 120, the volume of the crescent cavity 114 first increases and then decreases. As the volume of the crescent cavity 114 increases, the pressure within the crescent cavity 114 decreases, allowing the working medium to be drawn into the crescent cavity 114 through the input channel 111 via the input channel 111. As the volume of the crescent cavity 114 decreases, the pressure within the crescent cavity 114 increases, and the working medium is compressed and discharged to the outside of the pump body 110 through the output channel 112. In this way, the mixed flow pump 100 can autonomously suck in the working medium through the pressure change in the crescent cavity 114, thereby achieving pressurized pumping of the working medium, thereby reducing the layout of separation equipment and pipelines and reducing costs.

[0074] It can be understood that the rotor 130 and the inner wall of the rotary chamber remain in contact (tangent), which can ensure that the working medium will not exchange with each other at the connection point between the input channel 111 and the output channel 112 in the crescent chamber 114, thereby ensuring stable pumping efficiency of the working medium.

[0075] Over time, the mixed flow pump 100 may wear out, and the rotor 130 may lose contact with the inner wall of the rotary chamber, causing the working medium to exchange at the connection point between the input channel 111 and the output channel 112. This can lead to leakage of the working medium within the crescent chamber 114, reducing the efficiency of the mixed flow pump 100. To prevent this, the mixed flow pump 100 in the embodiment of the present application further includes a regulating assembly 140.

[0076] See Figure 2-Figure 4The adjusting assembly 140 is arranged in the installation channel 113 and separates the input channel 111 and the output channel 112. One side of the adjusting assembly 140 slides against the circumferential side wall of the rotor 130. In this way, the working medium is sucked into the crescent cavity 114 through the input channel 111 and is discharged from the outside of the pump body 110 from the output channel 112 under the drive of the rotor 130.

[0077] The adjustment assembly 140 abuts the rotor 130 and reciprocates in the second direction (Z) within the mounting channel 113 as the rotor 130 rotates. It will be appreciated that the mounting channel 113 and the output channel 112 are connected via the mounting channel opening 1131. The pressure within the output mounting channel 113 is the same as the pressure within the output channel 112, and the pressure within the output channel 112 is relatively high. Under the action of the high pressure, the adjustment assembly 140 can move within the mounting channel 113 toward the rotor 130, thereby maintaining abutment between the adjustment assembly 140 and the rotor 130. This arrangement prevents internal leakage of the mixed flow pump 100, thereby improving the transportation efficiency of the mixed flow pump 100.

[0078] The following combination Figure 1-Figure 5 , various structures of the adjustment component 140 are described in detail.

[0079] Optionally, the adjustment assembly 140 includes a separator sleeve 141 and a separator plate 142, the separator sleeve 141 is located in the installation channel 113 and connects the input channel 111 and the output channel 112, and the end of the separator sleeve 141 facing away from the installation channel 113 abuts against the rotor 130; the separator sleeve 141 has a slide groove 1411, and the separator plate 142 is at least partially located in the slide groove 1411 and separates the input channel 111 and the output channel 112; the end of the separator plate 142 facing away from the separator sleeve 141 abuts against the rotor 130; the separator plate 142 slides along the second direction (Z) relative to the slide groove 1411.

[0080] Illustratively, the separator sleeve 141 is positioned within the mounting channel 113 and is relatively stably connected to the inner wall of the mounting channel 113 via threaded fasteners. The end surface of the separator sleeve 141 facing the rotor 130 is an arcuate surface that aligns with and abuts the circumferential sidewalls of the rotor 130. The separator sleeve 141 is provided with a chute 1411, a communication hole 1412, and a communication groove 1413. The chute 1411 extends through opposite sides of the separator sleeve 141 along the second direction (Z) and communicates with the mounting channel 113. Communication hole 1412 and communication groove 1413 are located on either side of chute 1411 along the first direction (Y). Communication hole 1412 and communication groove 1413 communicate with chute 1411 along the first direction (Y). Communication hole 1412 is located on the side of separator sleeve 141 facing input channel 111 and communicates with input channel 111. Communication groove 1413 is located on the side of separator sleeve 141 facing output channel 112 and communicates with output channel 112. Separator plate 142 is located within chute 1411 and separates input channel 111 from output channel 112 within chute 1411. One side of separator plate 142 abuts against rotor 130. In this way, through the mutual cooperation of the partition plate 142 and the partition sleeve 141, a flow path of the working medium is formed: input channel opening 1111-input channel 111-connecting hole 1412-slide groove 1411-crescent cavity 114-slide groove 1411-output channel 112-output channel opening 1121.

[0081] The window area of ​​the communication hole 1412 is smaller than that of the communication groove 1413. Thus, the gap between the partition plate 142 and the separation sleeve 141 at the communication hole 1412 is relatively small, which facilitates the suction of the working medium from this location into the crescent cavity 114. The gap between the partition plate 142 and the separation sleeve 141 at the communication groove 1413 is relatively large, and there is no groove wall blocking the communication groove 1413 and the crescent cavity 114, which can reduce the resistance to the discharge of the working medium from this location. As a result, the pumping process of the working medium through the mixed delivery pump 100 is more stable and smooth.

[0082] It should be noted that in the embodiment of the present application, the partition plate 142 rotates with the rotor 130 and slides back and forth in the second direction (Z) relative to the chute 1411. Since the installation channel 113 is connected to the output channel 112 through the installation channel opening 1131, the chute 1411 and the installation channel 113 are connected, and the pressure in the installation channel 113 and the output channel 112 is the same and greater than the pressure in the input channel 111, the partition plate 142 slides relative to the chute 1411 in the second direction (Z) toward the rotor 130 under the pressure within the installation channel 113 and maintains contact with the rotor 130. With the cooperation of the partition plate 142 and the separation sleeve 141, internal leakage of the mixed flow pump 100 is prevented, and the pressure of the mixed flow pump 100 is stabilized, thereby improving the operating efficiency and effectiveness of the mixed flow pump 100 and reducing the system energy consumption of the mixed flow pump 100.

[0083] Combine Figure 2-Figure 4 , Figure 5 In the embodiment of the present application, the slide groove 1411 passes through the opposite sides of the separation sleeve 141 along the third direction (X), and the separation plate 142 is located in the slide groove 1411. The opposite sides of the separation plate 142 along the third direction (X) respectively abut against the inner wall of the installation channel 113, and form a separation and sealing effect on the input channel 111 and the output channel 112 with the inner wall of the installation channel 113.

[0084] Furthermore, grooves 1421 are provided on the two opposite side walls of the partition plate 142 along the first direction (Y), which can reduce the contact area between the partition plate 142 and the partition sleeve 141, thereby reducing the friction between the partition plate 142 and the partition sleeve 141, further extending the service life of the adjustment component 140, and reducing the maintenance cost of the mixed transfer pump 100.

[0085] Furthermore, as the partition plate 142 slides relative to the chute 1411 in the second direction (Z), the groove 1421 can move a portion of the working medium, such as water or oil, into the chute 1411. This lubricates the space between the partition plate 142 and the chute 1411 with the water or oil, further reducing friction between the partition plate 142 and the partition sleeve 141, thereby extending the service life of the adjustment assembly 140.

[0086] Optionally, the adjustment assembly 140 further includes an elastic member 143, which is at least partially located within the chute 1411 and abuts against the end of the partition plate 142 facing away from the rotor 130. Thus, the elastic force of the elastic member 143 maintains the abutment between the partition plate 142 and the rotor 130, thereby preventing internal leakage of the mixed flow pump 100 and stabilizing the movement of the mixed flow pump 100.

[0087] In this embodiment of the present application, a mounting groove 1414 is provided on the separator sleeve 141. Mounting groove 1414 extends along the second direction (Z) and communicates with the slide groove 1411. An elastic member 143 is positioned within mounting groove 1414. One side of the elastic member 143 along the second direction (Z) abuts against the separator plate 142, while the other side abuts against the inner wall of the mounting channel 113. Mounting groove 1414 forms a mounting position for the elastic member 143 and also prevents disconnection between the elastic member 143 and the separator plate 142, thereby enhancing the connection stability of the various components of the adjustment assembly 140 and further improving the structural and operational stability of the mixed-injection pump 100. Furthermore, the stable connection of the various components of the mixed-injection pump 100 reduces operating noise.

[0088] like Figure 2 、 Figure 3 and Figure 5As shown, there are two mounting grooves 1414 , which are spaced apart along the third direction (X). The elastic members 143 correspond to the mounting grooves 1414 one by one. In this way, the two elastic members 143 ensure that the partition plate 142 is subjected to balanced force.

[0089] It should be noted that in the embodiment of the present application, the mounting channel 113 and the output channel 112 remain connected. Thus, under the combined action of the elastic member 143 and the pressure within the mounting channel 113, the partition plate 142 maintains a stable abutment relationship with the rotor 130, thereby enhancing the stability and good operating efficiency of the mixed-infusion pump 100. Furthermore, the elastic member 143 may be, but is not limited to, a spring.

[0090] In some optional embodiments, see Figure 2-Figure 4 Adjustment assembly 140 further includes a sealing cover plate 144 and a first pipe joint 145. Sealing cover plate 144 is located at installation channel opening 1131 and is connected to pump body 110. First pipe joint 145 is provided on sealing cover plate 144 and output channel 112, respectively, to connect installation channel opening 1131 with output channel 112. Thus, installation channel 113 and output channel 112 are connected via first pipe joint 145.

[0091] In the embodiment of the present application, the sealing cover plate 144 and the pump body 110 are relatively stably connected via threaded fasteners. A seal may also be provided at the connection between the sealing cover plate 144 and the pump body 110 to further enhance the sealing performance of the mixed flow pump 100. A first pipe joint 145a is provided on the sealing cover plate 144 to communicate with the installation passage 113. A first pipe joint 145b is provided on the output passage 112. The first pipe joint 145a and the second pipe joint 145b may be connected via a connecting pipe.

[0092] It should be noted that the first pipe joint 145a and the sealing cover plate 144 can be connected by threads to achieve a detachable connection to facilitate maintenance of the mixed delivery pump 100. The first pipe joint 145b and the delivery channel can also be connected by threads to achieve a detachable connection. The connecting pipe can be a metal pipe.

[0093] In order to prevent the working medium from flowing back at the output channel port 1121 of the output channel 112 and the interior of the mixed flow pump 100 due to back pressure, in an optional embodiment, the mixed flow pump 100 further includes a one-way valve 150, which is disposed at the output channel port 1121 of the output channel 112.

[0094] It should be noted that the one-way valve 150 in the embodiment of the present application can ensure that the working medium is transported from the output channel 112 to the outside of the pump body 110 and will not flow back at the output channel port 1121.

[0095] The rotating shaft 120 and the structure of the rotating shaft 120 and the pump body 110 are described below with reference to the accompanying drawings.

[0096] See Figure 3 The rotating shaft member 120 includes a first shaft segment 121, a second shaft segment 122 and a third shaft segment 123, and the first shaft segment 121, the second shaft segment 122 and the third shaft segment 123 are connected in sequence along the third direction (X); the rotary cavity is open on two opposite sides along the third direction (X), and the second shaft segment 122 is arranged in the rotary cavity, and the second shaft segment 122 and the rotary axis of the rotary cavity are parallel; the first shaft segment 121 and the third shaft segment 123 are located outside the rotary cavity, and the axes of the first shaft segment 121 and the third shaft segment 123 coincide with the rotary axis of the rotary cavity.

[0097] In the embodiment of the present application, when the rotating shaft 120 drives the rotor 130 to rotate, only the second shaft segment 122 rotates eccentrically within the rotating chamber, while the axes of the first and third shaft segments 121, 123 rotate concentrically. This allows the rotating shaft 120 to maintain balance during rotation, further reducing the operating noise of the mixed infusion pump 100. The first and second shaft segments 121, 122 are located outside the rotating chamber to facilitate connection with other drive structures.

[0098] The rotary chamber is provided with sealing covers 115 at its openings. Seal covers 115 are located at both openings of the rotary chamber. Seal rings 116 are located between seal covers 115 and pump body 110 to prevent leakage of the working medium within the rotary chamber. Seal rings 116 are located between seal covers 115 and the corresponding first and second shaft sections 121 and 122 to prevent leakage of the working medium.

[0099] For example, see Figure 1-Figure 3 Mixed flow pump 100 also includes a bearing 160 and a bearing seat 170. Bearing 160 is mounted on first shaft section 121 and third shaft section 123, respectively, while bearing seat 170 is mounted on the outer race of bearing 160 on first shaft section 121 and third shaft section 123, respectively. Bearing seat 170 is fixedly connected to pump body 110. Bearing 160 provides stable support for rotating shaft 120. Bearing 160 converts the friction between rotating shaft 120 and bearing seat 170 from sliding friction to rolling friction, reducing friction and extending the service life of mixed flow pump 100.

[0100] In the embodiment of the present application, in order to prevent the bearing 160 from being stably connected between the rotating shaft 120 and the bearing seat 170, a limiting structure such as a positioning ring 117 and a retaining spring 118 can be connected to the side of the bearing 160.

[0101] Optionally, the mixed flow pump 100 further includes an end cap 180, which is correspondingly disposed with the bearing seat 170 and covers the bearing seat 170. Thus, the end cap 180 and the bearing seat 170 cooperate to compress the bearing 160 and the rotating shaft 120 along the axial direction of the rotating shaft 120, thereby ensuring a stable connection between the various components of the mixed flow pump 100, improving the stability and safety of the mixed flow pump 100, and further ensuring the operating efficiency of the mixed flow pump 100.

[0102] See Figure 2 and Figure 7 In an optional embodiment, the rotating shaft 120 has a lubrication channel 124, a lubrication channel inlet 1241, and a lubrication channel outlet 1242. Both the lubrication channel inlet 1241 and the lubrication channel outlet 1242 are connected to the lubrication channel 124. The lubrication channel inlet 1241 is located at one end of the rotating shaft 120. The lubrication channel outlet 1242 is located corresponding to the bearing 160. The mixed flow pump 100 also includes a second pipe joint 119, which is connected to the lubrication channel 124 via the lubrication channel inlet 1241. The second pipe joint 119 is configured to supply lubricating medium to the lubrication channel 124.

[0103] It can be understood that the lubrication channel outlet 1242 corresponds to the bearing 160. In this way, the lubricating medium enters the lubrication channel 124 through the lubrication channel inlet 1241. As the rotating shaft 120 rotates, the lubricating medium can flow to the lubrication channel outlet 1242 and be thrown out from the lubrication channel outlet 1242 under the centrifugal action of the rotating shaft 120 to lubricate the bearing 160, thereby reducing the wear of the bearing 160, improving the service life of the mixed flow pump 100, and reducing the maintenance difficulty and cost of the mixed flow pump 100.

[0104] In this embodiment of the present application, the number of lubrication channel outlets 1242 on the first shaft segment 121 and the second shaft segment 122 can be two. The two lubrication channel outlets 1242 are spaced apart on each shaft segment along the axial direction of the rotating shaft 120. The two lubrication channel outlets 1242 are connected by a spiral groove 1243 on the surface of the corresponding shaft segment. In this way, the lubricating medium can flow through the spiral groove 1243, thereby increasing the lubrication area of ​​the bearing 160 and the rotating shaft 120.

[0105] In an optional embodiment, the mixed flow pump 100 further includes a third pipe joint 190, which is disposed on the pump body 110 and communicates with the mounting channel 113, and the outlet of the third pipe joint 190 faces the regulating assembly 140; the third pipe joint 190 is configured to provide a lubricating medium to the regulating assembly 140.

[0106] See Figure 3Specifically, lubrication grooves 1422 are formed on two opposing sides of the partition plate 142 along the third direction (X). The third pipe joint 190 is connected to the mounting channel 113, and the outlet of the third pipe joint 190 faces the lubrication grooves 1422 of the partition plate 142, thereby allowing lubricating medium to flow into the lubrication grooves 1422. As a result, when the partition plate 142 moves within the mounting channel 113, it moves the lubricating medium, thereby increasing contact between the lubricating medium and the partition plate 142 and the inner wall of the mounting channel 113. This reduces friction between the partition plate 142 and the inner wall of the mounting channel 113, thereby extending the service life of the partition plate 142.

[0107] Optionally, a weight-reducing hole may be provided on the rotor 130 to reduce the weight of the mixed flow pump 100 and to provide balance and stability when the rotor 130 rotates with the shaft.

[0108] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0109] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0110] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes the meaning of “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0111] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mixed flow pump (100), characterized in that: include: A pump body (110) is provided, wherein the pump body (110) has a rotary chamber and separately arranged input channel (111), output channel (112) and installation channel (113); the input channel (111), the output channel (112) and the installation channel (113) intersect at the same point of the rotary chamber; along a first direction, the installation channel (113) is located between the input channel (111) and the output channel (112); the pump body (110) has an input channel opening (1111), an output channel opening (1121) and an installation channel opening (1131); The input channel opening (1111) and the output channel opening (1121) are respectively arranged on both sides of the pump body (110) along a first direction, and the installation channel opening (1131) is arranged on one side of the pump body (110) along a second direction; the input channel (111) is connected to the outside of the pump body (110) through the input channel opening (1111), the output channel (112) is connected to the outside of the pump body (110) through the output channel opening (1121), and the installation channel (113) is connected to the output channel (112) through the installation channel opening (1131); a rotating shaft (120), wherein the rotating shaft (120) is at least partially located in the rotating cavity, and the axis of the rotating shaft (120) located in the rotating cavity is parallel to the rotating axis of the rotating cavity; a rotor (130), the rotor (130) being sleeved on the rotating shaft (120) located in the rotating chamber, the axis of the rotor (130) being parallel to the rotating axis of the rotating chamber and the axis of the rotating shaft (120) located in the rotating chamber, and the circumferential side surface of the rotor (130) being in contact with a portion of the inner wall of the rotating chamber; an adjusting assembly (140), the adjusting assembly (140) being located in the mounting channel (113), a portion of the adjusting assembly (140) separating the input channel (111) and the output channel (112); one side of the adjusting assembly (140) being in sliding contact with a circumferential side wall of the rotor (130); and at least a portion of the adjusting assembly (140) being movably arranged in a second direction within the mounting channel (113); When the rotor (130) rotates along with the rotating shaft (120) around the rotation axis of the rotary chamber, the working medium enters the rotary chamber through the input channel (111) and is discharged from the outside of the pump body (110) through the output channel (112); Wherein, the rotation axis of the rotary cavity is along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The mixed flow pump (100) according to claim 1, characterized in that: The regulating assembly (140) comprises a separation sleeve (141) and a separation plate (142); the separation sleeve (141) is located in the installation channel (113) and connects the input channel (111) and the output channel (112); one end of the separation sleeve (141) facing away from the installation channel (113) along the second direction abuts against the rotor (130); The separation sleeve (141) has a sliding groove (1411), and the separation plate (142) is at least partially located in the sliding groove (1411) and separates the input channel (111) and the output channel (112); one end of the separation plate (142) facing away from the separation sleeve (141) along the second direction abuts against the rotor (130); The partition plate (142) slides relative to the sliding groove (1411) along the second direction.

3. The mixed flow pump (100) according to claim 2, characterized in that: The adjustment assembly (140) further includes an elastic member (143), wherein the elastic member (143) is at least partially located in the slide groove (1411), and the elastic member (143) abuts against an end of the partition plate (142) facing away from the rotor (130).

4. The mixed flow pump (100) according to claim 2, characterized in that: The regulating assembly (140) further comprises a sealing cover plate (144) and a first pipe joint (145); the sealing cover plate (144) is located at the installation channel opening (1131) and is connected to the pump body (110); The first pipe joint (145) is respectively provided on the sealing cover plate (144) and the output channel (112) to connect the installation channel opening (1131) and the output channel (112).

5. The mixed flow pump (100) according to any one of claims 1 to 4, characterized in that: It also includes a one-way valve (150), which is arranged at the output channel port (1121) of the output channel (112).

6. The mixed flow pump (100) according to any one of claims 1 to 4, characterized in that: The rotating shaft (120) comprises a first shaft segment (121), a second shaft segment (122) and a third shaft segment (123), wherein the first shaft segment (121), the second shaft segment (122) and the third shaft segment (123) are connected in sequence along the third direction; The rotary cavity is open on two opposite sides along the third direction, the second shaft segment (122) is passed through the rotary cavity, and the second shaft segment (122) is parallel to the rotary axis of the rotary cavity; the first shaft segment (121) and the third shaft segment (123) are located outside the rotary cavity, and the axes of the first shaft segment (121) and the third shaft segment (123) coincide with the rotary axis of the rotary cavity.

7. The mixed flow pump (100) according to claim 6, characterized in that: The pump body (110) further comprises a bearing (160) and a bearing seat (170), wherein the bearing (160) is respectively sleeved on the first shaft section (121) and the third shaft section (123), and the bearing seat (170) is respectively sleeved on the outer rings of the bearing (160) on the first shaft section (121) and the third shaft section (123); and the bearing seat (170) and the pump body (110) are relatively fixedly connected.

8. The mixed flow pump (100) according to claim 7, characterized in that: The rotating shaft (120) has a lubrication channel (124), a lubrication channel inlet (1241) and a lubrication channel outlet (1242); the lubrication channel inlet (1241) and the lubrication channel outlet (1242) are both in communication with the lubrication channel (124); the lubrication channel inlet (1241) is provided at one end of the rotating shaft (120); the lubrication channel outlet (1242) and the bearing (160) are provided correspondingly; The mixed feed pump (100) further comprises a second pipe joint (119), the second pipe joint (119) being in communication with the lubrication channel (124) via the lubrication channel inlet (1241); the second pipe joint (119) being configured to supply lubrication medium to the lubrication channel (124).

9. The mixed flow pump (100) according to claim 7, characterized in that: It also includes an end cover (180), the end cover (180) and the bearing seat (170) are correspondingly arranged, and the end cover (180) covers the bearing seat (170).

10. The mixed flow pump (100) according to any one of claims 1 to 4, characterized in that: The pump further comprises a third pipe joint (190), the third pipe joint (190) being arranged on the pump body (110) and communicating with the installation passage (113), and an outlet of the third pipe joint (190) facing the regulating assembly (140); The third pipe joint (190) is configured to provide lubrication medium to the adjustment assembly (140).

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