Multiphase pump

Abstract

A multiphase pump. A rotor (130) is arranged in parallel to an axis of rotation of a rotary cavity, the rotor (130) slidably abuts against part of an inner wall of the rotary cavity, and an adjustment assembly (140) slides in a mounting channel (113) and abuts against the rotor (130), so as to separate an input channel (111) from an output channel (112). When the rotor (130) rotates in the rotary cavity, the spatial size of the rotary cavity changes, the input channel (111), the output channel (112) and the rotary cavity are in sequential communication, and a working medium is suctioned in from the input channel (111), pressurized in the rotary cavity, and then discharged from the output channel (112). By means of such a multiphase pump, a multiphase working medium can be delivered, such that the number of separation apparatuses and pipelines can be reduced, thereby reducing delivery costs.

Description

Mixed delivery pump TECHNICAL FIELD

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

[0002] In the process of oil exploitation, downhole production includes crude oil, natural gas, condensate water, silt, flocculation and various viscous substances. These production is transported to the centralized processing station through pressurizing device and pipeline.

[0003] The phase state of these downhole production is different, and in the related art, the downhole production is separated and then transported to the processing station by using the separation pipeline delivery mode.

[0004] Such separation pipeline delivery mode results in an increase in the number of separation equipment and pipelines, and it is difficult to reduce the transportation cost.

[0005] SUMMARY

[0006] The present application provides a mixed delivery pump, which can reduce the number of separation equipment and pipelines and reduce the cost.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0008] The present application provides a mixed delivery pump, comprising:

[0009] A pump body has a rotating cavity and a separately arranged input channel, an output channel and a mounting channel, the input channel, the output channel and the mounting channel are connected at the same place of the rotating cavity; along the first direction, the mounting channel is located between the input channel and the output channel; the pump body has an input channel port, an output channel port and a mounting channel port; the input channel port and the output channel port are respectively arranged on both sides of the pump body along the first direction, and the mounting channel port is arranged on one side of the pump body along the second direction; the input channel is connected with the outside of the pump body through the input channel port, the output channel is connected with the outside of the pump body through the output channel port, and the mounting channel is connected with the output channel through the mounting channel port;

[0010] A rotating shaft is at least partially located in the rotating cavity, and the axis of the rotating shaft located in the rotating cavity is parallel to the rotating axis of the rotating cavity;

[0011] A rotor is sleeved on the rotating shaft located in the rotating cavity, the axis of the rotor is parallel to the rotating axis of the rotating cavity and the axis of the rotating shaft located in the rotating cavity, and the peripheral side surface of the rotor abuts against part of the inner wall of the rotating cavity;

[0012] An adjusting assembly is located in the mounting channel, and part of the adjusting assembly separates the input channel and the output channel; one side of the adjusting assembly and the circumferential side wall of the rotor slide abut; at least part of the adjusting assembly is movably arranged in the mounting channel along a second direction;

[0013] When the rotor rotates around the rotation axis of the rotation cavity along with the shaft member, the working medium enters the rotation cavity from the input channel and is discharged from the output channel to the outside of the pump body;

[0014] The rotation axis of the rotation cavity is along a third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0015] As an optional implementation, the adjusting assembly includes a separation sleeve and a separation plate, the separation sleeve is located in the mounting channel and communicates the input channel and the output channel, and one end of the separation sleeve away from the mounting channel along the second direction abuts against the rotor;

[0016] The separation sleeve has a sliding groove, and the separation plate is at least partially located in the sliding groove and separates the input channel and the output channel; one end of the separation plate away from the separation sleeve along the second direction abuts against the rotor;

[0017] The separation plate slides along the second direction relative to the sliding groove.

[0018] As an optional implementation, the adjusting assembly further includes an elastic member, the elastic member is at least partially located in the sliding groove, and one end of the elastic member and the separation plate away from the rotor abuts.

[0019] As an optional implementation, the adjusting assembly further includes a sealing cover plate and a first pipe joint, the sealing cover plate is located at the mounting channel opening and connected with the pump body;

[0020] The first pipe joint is respectively arranged at the sealing cover plate and the output channel to communicate the mounting channel opening and the output channel.

[0021] As an optional implementation, the mixed-flow pump further includes a one-way valve, the one-way valve is arranged at the output channel opening of the output channel.

[0022] As an optional implementation, the shaft member includes a first shaft segment, a second shaft segment and a third shaft segment, the first shaft segment, the second shaft segment and the third shaft segment are sequentially connected along the third direction;

[0023] The rotating cavity is open on both sides along the third direction, the second shaft segment is arranged in the rotating cavity, and the second shaft segment is parallel to the rotating axis of the rotating cavity; the first shaft segment and the third shaft segment are located outside the rotating cavity, and the axes of the first shaft segment and the third shaft segment are coincident with the rotating axis of the rotating cavity.

[0024] As an optional implementation, the mixed-flow pump further comprises bearings and bearing housings, the bearings are respectively sleeved on the first shaft segment and the third shaft segment, and the bearing housings are respectively sleeved on the outer rings of the bearings on the first shaft segment and the third shaft segment; the bearing housings and the pump body are relatively fixedly connected.

[0025] As an optional implementation, the rotating shaft member has a lubricating channel, a lubricating channel inlet and a lubricating channel outlet, the lubricating channel inlet and the lubricating channel outlet are both in communication with the lubricating channel, the lubricating channel inlet is arranged at one end of the rotating shaft member, and the lubricating channel outlet is arranged in correspondence with the bearing.

[0026] The mixed-flow pump further comprises a second pipe joint, the second pipe joint is in communication with the lubricating channel inlet and the lubricating channel, and the second pipe joint is configured to supply lubricating medium to the lubricating channel.

[0027] As an optional implementation, the mixed-flow pump further comprises an end cover, the end cover is arranged in correspondence with the bearing housing, and the end cover covers the bearing housing.

[0028] As an optional implementation, the mixed-flow pump further comprises a third pipe joint, the third pipe joint is arranged on the pump body and is in communication with the mounting channel, and the outlet of the third pipe joint faces the adjusting assembly.

[0029] The third pipe joint is configured to provide lubricating medium for the adjusting assembly.

[0030] The mixed delivery pump provided in the application is characterized in that the rotating shaft member and the rotor are arranged eccentrically relative to the rotation center of the rotating cavity, the partial circumferential side wall of the rotor and the partial inner wall of the rotating cavity abut, that is, the rotor and the rotating cavity are tangent at the abutting position, and the crescent cavity is formed between the inner wall of the rotating cavity and the circumferential side wall of the rotor. When the rotor rotates one circle around the rotation axis of the rotating cavity, the volume of the crescent cavity first increases and then decreases. In the process of the volume increase of the crescent cavity, the pressure in the crescent cavity decreases, and the working medium in the input channel is sucked into the crescent cavity. When the volume of the crescent cavity decreases, the pressure in the crescent cavity increases, and the working medium is compressed and discharged to the outside of the pump body through the output channel. In this way, the mixed delivery pump can automatically suck the working medium through the pressure change in the crescent cavity, realize the pressurization pumping of the working medium, and thus reduce the arrangement of the separation equipment and the pipeline and reduce the cost. The adjusting assembly and the rotor abut and reciprocate in the mounting channel along the second direction with the rotation of the rotor. The mounting channel and the output channel are communicated through the mounting channel port, so that the pressure in the output mounting channel and the pressure in the output channel are the same, and the pressure in the output channel is relatively high. The adjusting assembly can move in the mounting channel under the action of high pressure to keep the adjusting assembly and the rotor abutting. Through such an arrangement, the internal leakage of the mixed delivery pump is avoided to improve the transportation efficiency of the mixed delivery pump. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0032] Fig. 1 is a schematic view of the mixed delivery pump provided in the embodiment of the present application;

[0033] Fig. 2 is an exploded view of the mixed delivery pump provided in the embodiment of the present application;

[0034] Fig. 3 is a sectional view I of the mixed delivery pump provided in the embodiment of the present application;

[0035] Fig. 4 is a sectional view II of the mixed delivery pump provided in the embodiment of the present application;

[0036] Fig. 5 is a schematic view of the separation sleeve in the mixed delivery pump provided in the embodiment of the present application;

[0037] Fig. 6 is a local enlarged view of the part in the dotted line frame in Fig. 3;

[0038] Fig. 7 is a schematic view of the rotating shaft member in the mixed delivery pump provided in the embodiment of the present application.

[0039] Explanation of reference signs:

[0040] 100 - mixed-flow pump

[0041] 110 - pump body

[0042] 111 - input channel; 1111 - input channel port

[0043] 112 - output channel; 1121 - output channel port

[0044] 113 - mounting channel; 1131 - mounting channel port

[0045] 114 - crescent cavity; 115 - sealing cover; 116 - sealing ring; 117 - positioning ring; 118 - snap spring; 119 - second pipe joint

[0046] 120 - rotating shaft member; 121 - first shaft segment; 122 - second shaft segment; 123 - third shaft segment

[0047] 124 - lubricating channel; 1241 - lubricating channel inlet; 1242 - lubricating channel outlet; 1243 - helical groove

[0048] 130 - rotor

[0049] 140 - adjusting assembly

[0050] 141 - partition sleeve; 1411 - sliding groove; 1412 - communication hole; 1413 - communication groove; 1414 - mounting groove

[0051] 142 - partition plate; 1421 - recess; 1422 - lubricating groove

[0052] 143 - elastic member; 144 - sealing cover plate; 145, 145a, 145b - first pipe joint

[0053] 150 - one-way valve

[0054] 160 - bearing

[0055] 170 - bearing seat

[0056] 180 - end cover

[0057] 190 - third pipe joint DETAILED DESCRIPTION

[0058] In order 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 described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. The embodiments described below and the features in the embodiments can be combined with each other without conflict.

[0059] In the process of oil exploitation, downhole products include crude oil, natural gas, condensate water, silt, flocculation and various viscous substances. These products are transported to a centralized processing station through a pressurizing device and a pipeline.

[0060] The phase states of these downhole products are different, and in the related art, a separation pipeline conveying mode is often used to separate the downhole products and then convey them to the processing station.

[0061] Such a separation pipeline conveying mode leads to an increase in the number of separation devices and pipelines, and it is difficult to reduce the conveying cost.

[0062] In order to overcome the defects in the prior art, the embodiments of the present application provide a mixed conveying pump. A rotor is arranged in parallel with a rotation axis of a rotation cavity. The rotor and an inner wall of the rotation cavity partially slide and abut. An adjusting assembly slides in an installation channel and abuts with the rotor to separate an input channel and an output channel. When the rotor rotates in the rotation cavity, the size of the rotation cavity changes. The input channel, the output channel and the rotation cavity are sequentially communicated. Working medium is sucked from the input channel and discharged from the output channel after being pressurized in the rotation cavity. Through such a mixed conveying pump, multi-phase working medium can be conveyed, and the number of separation devices and pipelines can be reduced, thereby reducing the conveying cost.

[0063] The content of the present application will be described in detail below with reference to the drawings, so that those skilled in the art can more clearly and specifically understand the content of the present application.

[0064] As shown in FIGS. 1-4, a first direction is defined as a Y direction, a second direction is defined as a Z direction, and a third direction is defined as an X direction.

[0065] The mixed conveying pump 100 provided by the embodiments of the present application can convey working medium of multiple different phase states or single-phase liquid and gas. For example, the mixture of crude oil and natural gas formed in the downhole products in the field of oil exploitation is collectively used as working medium. The embodiments of the present application do not make specific requirements thereon.

[0066] The mixed-flow pump 100 comprises a pump body 110, wherein the pump body 110 has a rotating cavity with a circular cross-sectional profile. The extending direction of the rotating axis of the rotating cavity is along the third direction (X). The pump body 110 is provided with an input channel 111, an output channel 112 and a mounting channel 113 which are independent of each other. The input channel 111, the output channel 112 and the mounting channel are sequentially arranged along the first direction (Y).

[0067] Specifically, the input channel 111 and the output channel 112 are oppositely arranged and communicated along the first direction (Y), and the mounting channel 113 is located between the input channel 111 and the output channel 112 along the first direction (Y). The mounting channel 113 penetrates the input channel 111 and the output channel 112. The mounting channel 113, the input channel 111 and the output channel 112 are communicated at the communication positions.

[0068] The pump body 110 is further provided with an input channel port 1111, an output channel port 1121 and a mounting channel port 1131. As shown in FIG. 3, the input channel port 1111 and the output channel port 1121 are arranged on opposite sides of the pump body 110 along the first direction (Y), the input channel 111 is communicated with the outside of the pump body 110 through the input channel port 1111, and the output channel 112 is communicated with the outside of the pump body 110 through the output channel port 1121. The mounting channel 113 is communicated with the output channel 112 through the mounting channel port 1131.

[0069] The mixed-flow pump 100 in the embodiment of the present application further comprises a rotating shaft member 120 which extends along the third direction (X) and has a circular cross-sectional profile. The rotating shaft member 120 is partially located in the rotating cavity. It should be noted that the axis of the rotating shaft member 120 located in the rotating cavity is parallel to the axis of the rotating cavity, that is, the axis of the rotating shaft member 120 is eccentrically arranged relative to the rotating center of the rotating cavity. It can be understood that the axis of the rotating shaft member 120 and the rotating center of the rotating cavity have a spacing.

[0070] Optionally, the spacing between the axis of the rotating shaft member 120 and the rotating center of the rotating cavity can be 3 mm.

[0071] The pump body 110 in the embodiment of the present application further comprises a rotor 130 which is located in the rotating cavity and connected with the rotating shaft member 120. For example, the rotor 130 can be sleeved on the rotating shaft member 120 and connected with the rotating shaft member 120 through a key, such as a flat key. The key connection between the rotating shaft member 120 and the rotor 130 can stably and effectively transmit torque to ensure the stable operation of the mixed-flow pump 100. The flat key can uniformly distribute the torque between the key and the key groove, thereby reducing local stress concentration, prolonging the service life of the rotating shaft member 120 and the rotor 130, and further reducing the maintenance cost of the mixed-flow pump 100.

[0072] It should be noted that the cross-sectional shape of the rotor 130 is circular, the axis of the rotor 130 extends along the third direction (X), and the axis of the rotor 130 is parallel to the rotation axis of the rotation cavity, that is, the axis of the rotor 130 is eccentric relative to the rotation center of the rotation cavity. In the embodiment of the present application, the axis of the rotor 130 is also parallel to the axis of the rotating shaft 120 located in the rotation cavity, that is, the rotor 130 is also eccentric relative to the rotating shaft 120.

[0073] In this way, a distance is formed between the axis of the rotor 130 and the rotation center of the rotation cavity, which can be 5 mm.

[0074] In the embodiment of the present application, the rotating shaft 120 and the rotor 130 are eccentric relative to the rotation center of the rotation cavity, and part of the circumferential side wall of the rotor 130 abuts part of the inner wall of the rotation cavity, that is, the rotor 130 and the rotation cavity are tangent at the abutting position, and a crescent cavity 114 is formed between the inner wall of the rotation cavity and the circumferential side wall of the rotor 130. When the rotor 130 rotates one revolution around the rotation axis of the rotation cavity with the rotating shaft 120, the volume of the crescent cavity 114 first increases and then decreases. During the process of volume increase of the crescent cavity 114, the pressure in the crescent cavity 114 decreases, and the working medium in the input channel 111 is sucked into the crescent cavity 114. When the volume of the crescent cavity 114 decreases, the pressure in 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 automatically suck the working medium through the pressure change in the crescent cavity 114, realize the pressurization and pumping of the working medium, thereby reducing the arrangement of the separation equipment and the pipeline and reducing the cost.

[0075] It can be understood that the rotor 130 and the inner wall of the rotation cavity remain abutting (tangent), which can ensure that the working medium in the crescent cavity 114 does not exchange with each other at the communication position of the input channel 111 and the output channel 112, thereby ensuring the stable pumping efficiency of the working medium.

[0076] After long-term use, the mixed-flow pump 100 may be worn, and the rotor 130 and the inner wall of the rotation cavity may not be able to abut, so that the working medium exchanges with each other at the communication position of the input channel 111 and the output channel 112, that is, the working medium leaks in the crescent cavity 114, and the working efficiency of the mixed-flow pump 100 is reduced. In order to avoid this situation, the mixed-flow pump 100 in the embodiment of the present application further comprises an adjusting assembly 140.

[0077] Referring to FIGS. 2-4, the adjusting assembly 140 is arranged in the mounting channel 113 and separates the input channel 111 and the output channel 112, and one side of the adjusting assembly 140 is in sliding abutment with 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 discharged to the outside of the pump body 110 from the output channel 112 under the driving of the rotor 130.

[0078] The adjusting assembly 140 abuts against the rotor 130 and reciprocates along the second direction (Z) in the mounting channel 113 with the rotation of the rotor 130. It can be understood that the mounting channel 113 and the output channel 112 are communicated through the mounting channel port 1131, the pressure in the output mounting channel 113 and the pressure in the output channel 112 are the same, and the pressure in the output channel 112 is relatively high, so that the adjusting assembly 140 can move in the mounting channel 113 towards the rotor 130 under the action of high pressure, so that the adjusting assembly 140 and the rotor 130 keep abutting against each other. Through such an arrangement, the internal leakage of the mixed delivery pump 100 is avoided, so as to improve the transportation efficiency of the mixed delivery pump 100.

[0079] The various structures of the adjusting assembly 140 will be described in detail below in combination with FIGS. 1-5.

[0080] Optionally, the adjusting assembly 140 comprises a separation sleeve 141 and a separation plate 142. The separation sleeve 141 is located in the mounting channel 113 and communicates the input channel 111 and the output channel 112. An end of the separation sleeve 141 away from the mounting channel 113 abuts against the rotor 130. The separation sleeve 141 has a sliding groove 1411. 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. An end of the separation plate 142 away from the separation sleeve 141 abuts against the rotor 130. The separation plate 142 slides along the second direction (Z) relative to the sliding groove 1411.

[0081] For example, the partition sleeve 141 is stably connected to the inner wall of the mounting channel 113 through a threaded fastener, and the end face of the partition sleeve 141 facing the rotor 130 is an arc face that is adapted to the shape of the circumferential side wall of the rotor 130 and abuts against the circumferential side wall. The partition sleeve 141 is provided with a sliding groove 1411, a communication hole 1412, and a communication groove 1413. The sliding groove 1411 penetrates through the opposite sides of the partition sleeve 141 along the second direction (Z) and communicates with the mounting channel 113. The communication hole 1412 and the communication groove 1413 are located on the two sides of the sliding groove 1411 along the first direction (Y), and the communication hole 1412 and the communication groove 1413 communicate with the sliding groove 1411 along the first direction (Y). The communication hole 1412 is located on the side of the partition sleeve 141 facing the input channel 111 and communicates with the input channel 111, and the communication groove 1413 is located on the side of the partition sleeve 141 facing the output channel 112 and communicates with the output channel 112. The partition plate 142 is located in the sliding groove 1411 and separates the input channel 111 and the output channel 112 in the sliding groove 1411, and one side of the partition plate 142 abuts against the rotor 130. In this way, through the cooperation of the partition plate 142 and the partition sleeve 141, the flow path of the working medium is formed: the input channel port 1111-input channel 111-communication hole 1412-sliding groove 1411-crescent cavity 114-sliding groove 1411-output channel 112-output channel port 1121.

[0082] The window area of the communication hole 1412 relative to the communication groove 1413 is small, so that the gap between the partition plate 142 and the partition sleeve 141 at the communication hole 1412 is relatively small, which helps the working medium to be sucked into the crescent cavity 114 from there. The gap between the partition plate 142 and the partition sleeve 141 at the communication groove 1413 is relatively large, and there is no slot wall between the communication groove 1413 and the crescent cavity 114, which can reduce the resistance of the working medium discharged from there. In this way, the pumping process of the working medium through the mixed-flow pump 100 is more stable and smooth.

[0083] It should be noted that in the embodiments of the present application, the partition plate 142 rotates with the rotor 130 and reciprocally slides along the second direction (Z) relative to the sliding groove 1411. Since the mounting channel 113 communicates with the output channel 112 through the mounting channel port 1131, the sliding groove 1411 communicates with the mounting channel 113, the pressure of the mounting channel 113 and the output channel 112 is the same and greater than the pressure of the input channel 111, and the partition plate 142 slides along the second direction (Z) relative to the sliding groove 1411 under the pressure in the mounting channel 113 and abuts against the rotor 130. Under the cooperation of the partition plate 142 and the partition sleeve 141, the mixed-flow pump 100 is prevented from leaking, the pressure of the mixed-flow pump 100 is stable, thereby improving the working efficiency and effect of the mixed-flow pump 100, and reducing the system energy consumption of the mixed-flow pump 100.

[0084] In combination with FIGS. 2-4, FIG. 5, in the embodiment of the present application, the sliding groove 1411 penetrates through the opposite sides of the partition sleeve 141 along the third direction (X), the partition plate 142 is located in the sliding groove 1411, and the opposite sides of the partition plate 142 along the third direction (X) abut against and form a partition and sealing effect on the input channel 111 and the output channel 112 with the inner walls of the installation channel 113.

[0085] Further, the recess 1421 is arranged on each of the 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, reduce the friction therebetween, further prolong the service life of the adjusting assembly 140, and reduce the maintenance cost of the mixed delivery pump 100.

[0086] Furthermore, the partition plate 142 slides along the second direction (Z) relative to the sliding groove 1411, and in the movement process of the partition plate 142, a part of working medium such as water and oil can be moved into the sliding groove 1411 through the recess 1421. In this way, the partition plate 142 and the sliding groove 1411 can be lubricated by water and oil, further reducing the friction therebetween to prolong the service life of the adjusting assembly 140.

[0087] Optionally, the adjusting assembly 140 further comprises an elastic member 143, the elastic member 143 is at least partially located in the sliding groove 1411, and the elastic member 143 abuts against the end of the partition plate 142 away from the rotor 130. In this way, under the elastic force of the elastic member 143, the partition plate 142 and the rotor 130 can be kept in abutting relationship, thereby preventing leakage in the mixed delivery pump 100, and stabilizing the movement process of the mixed delivery pump 100.

[0088] In the embodiment of the present application, the partition sleeve 141 is provided with an installation groove 1414, the installation groove 1414 is communicated with the sliding groove 1411 along the second direction (Z), the elastic member 143 is located in the installation groove 1414, one side of the elastic member 143 along the second direction (Z) abuts against the partition plate 142, and the other side abuts against the inner wall of the installation channel 113. The installation groove 1414 forms an installation position of the elastic member 143, further limits the disconnection between the elastic member 143 and the partition plate 142, improves the connection stability of each part of the adjusting assembly 140, further improves the structural stability and working stability of the mixed delivery pump 100. Furthermore, the stable connection of each part of the mixed delivery pump 100 can also reduce the working noise.

[0089] As shown in FIGS. 2, 3 and 5, the installation groove 1414 is two, the two installation grooves 1414 are arranged at intervals along the third direction (X), and the elastic member 143 and the installation groove 1414 correspond to each other. In this way, two elastic members 143 are used to ensure the force balance of the partition plate 142.

[0090] It should be noted that in the embodiment of the present application, the installation channel 113 and the output channel 112 remain in communication, so that the partition plate 142, under the joint action of the elastic member 143 and the pressure in the installation channel 113, maintains a stable abutting relationship with the rotor 130, thereby improving the stability and good working efficiency of the mixed delivery pump 100. In addition, the elastic member 143 can be a spring, but is not limited to a spring.

[0091] In some optional embodiments, referring to FIGS. 2-4, the adjusting 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 with the pump body 110. The first pipe joint 145 is arranged on the sealing cover plate 144 and the output channel 112 respectively, so as to connect the installation channel opening 1131 and the output channel 112. In this way, the installation channel 113 and the output channel 112 are connected through the first pipe joint 145.

[0092] In the embodiment of the present application, the sealing cover plate 144 and the pump body 110 are relatively stably connected through threaded fasteners. A sealing member can be further arranged at the connection between the sealing cover plate 144 and the pump body 110, so as to further improve the sealing performance of the mixed delivery pump 100. The first pipe joint 145a is arranged on the sealing cover plate 144 to communicate with the installation channel 113, and the first pipe joint 145b is arranged on the output channel 112. The first pipe joint 145a and the first pipe joint 145b can be connected through a connecting pipe.

[0093] It should be noted that the first pipe joint 145a and the sealing cover plate 144 can be connected through threads to achieve detachable connection, so as to facilitate the maintenance of the mixed delivery pump 100. The first pipe joint 145b and the output channel can also be connected through threads to achieve detachable connection. The connecting pipe can be a metal pipe.

[0094] In order to prevent the working medium from flowing back at the output channel opening 1121 of the output channel 112 and inside the mixed delivery pump 100 due to back pressure. In an optional embodiment, the mixed delivery pump 100 further comprises a one-way valve 150 arranged at the output channel opening 1121 of the output channel 112.

[0095] It should be noted that the one-way valve 150 in the embodiment of the present application can ensure that the working medium is delivered from the output channel 112 to the outside of the pump body 110, and will not flow back at the output channel opening 1121.

[0096] The structure of the rotating shaft member 120 and the cooperation between the rotating shaft member 120 and the pump body 110 will be described below with reference to the accompanying drawings.

[0097] Referring to FIG. 3, the rotating shaft 120 comprises a first shaft segment 121, a second shaft segment 122 and a third shaft segment 123, which are sequentially connected along the third direction (X); the rotating cavity is open on both sides along the third direction (X), the second shaft segment 122 is arranged in the rotating cavity, and the second shaft segment 122 is parallel to the rotating axis of the rotating cavity; the first shaft segment 121 and the third shaft segment 123 are located outside the rotating cavity, and the axes of the first shaft segment 121 and the third shaft segment 123 are coincident with the rotating axis of the rotating cavity.

[0098] 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 in the rotating cavity, and the axes of the first shaft segment 121 and the third shaft segment 123 rotate concentrically, so that the rotating shaft 120 can keep balance during rotation, and further reduce the working noise of the mixed delivery pump 100. The first shaft segment 121 and the second shaft segment 122 are located outside the rotating cavity, so as to be connected with other driving structures.

[0099] The rotating cavity is provided with a sealing cover 115 at the opening, the sealing cover 115 is arranged at the two openings of the rotating cavity respectively, a sealing ring 116 is arranged between the sealing cover 115 and the pump body 110, so as to prevent the working medium in the rotating cavity from leaking. The sealing ring 116 is arranged between the sealing cover 115 and the corresponding first shaft segment 121 and second shaft segment 122, so as to prevent the working medium from leaking from the position.

[0100] For example, referring to FIGS. 1-3, the mixed delivery pump 100 further comprises bearings 160 and bearing seats 170, the bearings 160 are respectively sleeved on the first shaft segment 121 and the third shaft segment 123, and the bearing seats 170 are respectively sleeved on the outer rings of the bearings 160 on the first shaft segment 121 and the third shaft segment 123; the bearing seats 170 are fixedly connected with the pump body 110. In this way, the bearings 160 stably support the rotating shaft 120, the bearings 160 change the friction between the rotating shaft 120 and the bearing seats 170 from sliding friction to rolling friction, reduce the friction, and prolong the service life of the mixed delivery pump 100.

[0101] In the embodiment of the present application, in order to prevent the bearings 160 from being stably connected between the rotating shaft 120 and the bearing seats 170, a positioning ring 117, a snap spring 118 or other limiting structures can be connected to the side of the bearing 160.

[0102] Optionally, the mixed delivery pump 100 further comprises an end cover 180, the end cover 180 and the bearing seat 170 are arranged correspondingly, and the end cover 180 covers the bearing seat 170. In this way, the end cover 180 and the bearing seat 170 press the bearings 160 and the rotating shaft 120 along the axial direction of the rotating shaft 120, so as to stably connect the components of the mixed delivery pump 100, improve the stability and safety of the mixed delivery pump 100, and further guarantee the working efficiency of the mixed delivery pump 100.

[0103] Referring to FIG. 2 and FIG. 7, in an alternative embodiment, the rotating shaft 120 has a lubricating channel 124, a lubricating channel inlet 1241 and a lubricating channel outlet 1242, the lubricating channel inlet 1241 and the lubricating channel outlet 1242 are both in communication with the lubricating channel 124, the lubricating channel inlet 1241 is arranged at one end of the rotating shaft 120; the lubricating channel outlet 1242 is correspondingly arranged with the bearing 160. The mixed-flow pump 100 further comprises a second pipe joint 119, the second pipe joint 119 is in communication with the lubricating channel inlet 1241 and the lubricating channel 124; the second pipe joint 119 is configured to supply lubricating medium to the lubricating channel 124.

[0104] It can be understood that the lubricating channel outlet 1242 corresponds to the bearing 160, so that the lubricating medium enters the lubricating channel 124 through the lubricating channel inlet 1241, and flows to the lubricating channel outlet 1242 as the rotating shaft 120 rotates, and is thrown out of the lubricating channel outlet 1242 under the centrifugal action of the rotating shaft 120, so as to lubricate the bearing 160, reduce the wear of the bearing 160, improve the service life of the mixed-flow pump 100, and reduce the maintenance difficulty and cost of the mixed-flow pump 100.

[0105] In the embodiment of the application, the number of lubricating channel outlets 1242 on the first shaft segment 121 and the second shaft segment 122 can be two, the two lubricating channel outlets 1242 are respectively distributed on each shaft segment along the axial direction of the rotating shaft 120, and the two lubricating channel outlets 1242 are connected on the surface of the corresponding shaft segment through a spiral groove 1243. In this way, the lubricating medium can flow through the spiral groove 1243 to increase the lubricating area of the lubricating medium for the bearing 160 and the rotating shaft 120.

[0106] In an alternative embodiment, the mixed-flow pump 100 further comprises a third pipe joint 190, the third pipe joint 190 is arranged on the pump body 110 and is in communication with the mounting channel 113, and the outlet of the third pipe joint 190 faces the adjusting assembly 140; the third pipe joint 190 is configured to provide lubricating medium to the adjusting assembly 140.

[0107] Referring to FIG. 3, specifically, the partition plate 142 has a lubricating groove 1422 on the opposite side along the third direction (X), the third pipe joint 190 is in communication with the mounting channel 113, and the outlet of the third pipe joint 190 faces the lubricating groove 1422 of the partition plate 142, so as to introduce lubricating medium into the lubricating groove 1422. In this way, when the partition plate 142 moves in the mounting channel 113, the lubricating medium is moved, so as to increase the contact between the lubricating medium and the partition plate 142 and the inner wall of the mounting channel 113, to reduce the friction between the partition plate 142 and the inner wall of the mounting channel 113, and prolong the service life of the partition plate 142.

[0108] Optionally, the rotor 130 can be provided with a weight-reducing hole, which can reduce the weight of the mixed delivery pump 100, and also can play a role of balance and stability when the rotor shaft rotates.

[0109] It should be noted that the embodiments referred to in the specification as "one embodiment", "an embodiment", "example embodiment", "some embodiments", and the like, can include a particular feature, structure, or characteristic, but every embodiment can not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of those skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

[0110] In general, terminology can be understood at least in part from usage in context. For example, terms, "and", "or", or "and / or" as used herein can be understood as having the meaning as they would in the context of other rows, unless stated otherwise. Also, terms, "a" or "an", as used herein, can be understood to mean "one or more" unless stated otherwise.

[0111] It will be readily understood that the terms "on", "above", and "on top of", as used herein, should be interpreted in the broadest context to mean not only "directly on something" but also "on something with intervening features or layers therebetween", and that "above" or "on top of" not only includes the meaning of "above" or "on top of something" but also can include the meaning of "above" or "on top of something" without intervening features or layers therebetween (i.e., directly on something).

[0112] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90° or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0113] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mixed flow pump (100) characterized by, The utility model relates to a pump, comprising: a pump body (110) having a rotary cavity and a separately arranged input channel (111), output channel (112) and mounting channel (113) which are connected at the same place of the rotary cavity; along the first direction, the mounting channel (113) is located between the input channel (111) and the output channel (112); the pump body (110) has an input channel mouth (1111), output channel mouth (1121) and mounting channel mouth (1131); the input channel mouth (1111) and the output channel mouth (1121) are arranged on both sides of the pump body (110) along the first direction respectively, and the mounting channel mouth (1131) is arranged on one side of the pump body (110) along the second direction; the input channel (111) is connected with the outside of the pump body (110) through the input channel mouth (1111), the output channel (112) is connected with the outside of the pump body (110) through the output channel mouth (1121), and the mounting channel (113) is connected with the output channel (112) through the mounting channel mouth (1131); a rotating shaft (120) which is at least partially located in the rotary cavity, and the axis of the rotating shaft (120) located in the rotary cavity is parallel to the rotary axis of the rotary cavity; a rotor (130) which is sleeved on the rotating shaft (120) located in the rotary cavity, and the axis of the rotor (130) is parallel to the rotary axis of the rotary cavity and the axis of the rotating shaft (120) located in the rotary cavity, and the circumferential side of the rotor (130) abuts against part of the inner wall of the rotary cavity; an adjusting assembly (140) which is located in the mounting channel (113), and part of the adjusting assembly (140) 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); and at least part of the adjusting assembly (140) is movably arranged in the mounting channel (113) along the second direction; when the rotor (130) rotates with the rotating shaft (120) around the rotary axis of the rotary cavity, working medium enters the rotary cavity from the input channel (111) and is discharged from the output channel (112) to the outside of the pump body (110); wherein the rotary axis of the rotary cavity is along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

2. The mixed-flow pump (100) of claim 1, wherein The adjusting assembly (140) comprises a separation sleeve (141) and a separation plate (142), the separation sleeve (141) is located in the mounting channel (113) and is connected with the input channel (111) and the output channel (112), and one end of the separation sleeve (141) away from the mounting channel (113) abuts against the rotor (130) along the second direction. 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); the separation plate (142) abuts against one end of the separation sleeve (141) and the rotor (130) in the second direction; The separation plate (142) slides in the second direction relative to the sliding groove (1411).

3. The mixed-flow pump (100) of claim 2, wherein, The adjustment assembly (140) further comprises an elastic member (143), which is at least partially located in the sliding groove (1411), and the elastic member (143) and the end of the separation plate (142) away from the rotor (130) abut against each other.

4. The mixed-flow pump (100) of claim 2, wherein, The adjustment 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 connected with the pump body (110); The first pipe joint (145) is respectively arranged on the sealing cover plate (144) and the output channel (112) to communicate the installation channel opening (1131) and the output channel (112).

5. The mixed-flow pump (100) according to any one of claims 1-4, characterized in that Further comprising a one-way valve (150) arranged at the output channel opening (1121) of the output channel (112).

6. The mixed-flow pump (100) according to any one of claims 1-4, characterized in that The rotating shaft member (120) comprises a first shaft segment (121), a second shaft segment (122) and a third shaft segment (123), which are sequentially connected in the third direction; The rotating cavity is open on both sides in the third direction, the second shaft segment (122) is arranged in the rotating cavity, and the second shaft segment (122) is parallel to the rotating axis of the rotating cavity; the first shaft segment (121) and the third shaft segment (123) are located outside the rotating cavity, and the axes of the first shaft segment (121) and the third shaft segment (123) are coincident with the rotating axis of the rotating cavity.

7. The mixed-flow pump (100) of claim 6, wherein, Further comprising a bearing (160) and a bearing seat (170), the bearing (160) is respectively sleeved on the first shaft segment (121) and the third shaft segment (123), and the bearing seat (170) is respectively sleeved on the outer ring of the bearing (160) on the first shaft segment (121) and the third shaft segment (123); the bearing seat (170) is fixedly connected with the pump body (110).

8. The mixed-flow pump (100) of claim 7, wherein, The rotating shaft member (120) has a lubricating channel (124), a lubricating channel inlet (1241) and a lubricating channel outlet (1242), the lubricating channel inlet (1241) and the lubricating channel outlet (1242) are both communicated with the lubricating channel (124), and the lubricating channel inlet (1241) is arranged at one end of the rotating shaft member (120); the lubricating channel outlet (1242) is correspondingly arranged with the bearing (160); The mixed-flow pump (100) further comprises a second pipe joint (119) which is communicated with the lubricating passage (124) through the lubricating passage inlet (1241); the second pipe joint (119) is configured to supply lubricating medium to the lubricating passage (124).

9. The mixed-flow pump (100) of claim 7, wherein, Further comprising an end cover (180) which is correspondingly arranged with the bearing seat (170), and the end cover (180) covers the bearing seat (170).

10. The mixed-flow pump (100) according to any one of claims 1-4, characterized in that Further comprising a third pipe joint (190) which is arranged on the pump body (110) and communicated with the mounting passage (113), and the outlet of the third pipe joint (190) faces the adjusting assembly (140); the third pipe joint (190) is configured to provide lubricating medium to the adjusting assembly (140).

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