A two-phase collaborative screw pump

Abstract

The present invention discloses a bi-phase collaborative screw pump, which relates to the technical field of oilfield production equipment and includes a pump body housing, an intermediate connection section, and a lower connection section. The upper and lower sides of the intermediate connection section are respectively threadedly connected to the pump body housing and the lower connection section by threads. A storage chamber is provided inside the lower connection section, and a driving motor is installed inside the storage chamber. The output shaft of the driving motor is fixedly connected to a central connecting rod. When the pushing bladder expands, the pushing bladder will drive the moving friction plate to come into contact with the continuously rotating fixed friction plate. When continuously coming into contact with the rotating fixed friction plate, continuous rotational friction will generate heat. In the case of generating heat, the oil liquid in the oil inlet cavity can be heated, and the effect of oil separation can be further enhanced by heating and extracting the gas in the oil liquid.

Description

Technical Field

[0001] The invention relates to the technical field of oil field production equipment, and in particular to a two-phase coordinated screw pump. Background Art

[0002] Screw pump oil production equipment is widely used in oil production, oil field water injection, oil pipelines and tank trucks. Especially in crude oil production under complex geological conditions such as heavy oil production, high sand content wells, high gas content wells, etc., screw pump oil production equipment has shown its unique advantages. The screw pump can continuously lift the medium, has stable load during operation, small mechanical loss, and high efficiency. It is one of the methods with the lowest energy consumption and the highest efficiency in mechanical oil production. Under the same displacement and head, the screw pump has a lower power configuration than other mechanical production methods.

[0003] In the patent entitled: Electric Submersible Screw Pump with Gas-Liquid Two-Phase Collaborative Operation and Publication Number: CN118881554B, it is proposed that when petroleum liquid containing a large amount of air is extracted into the screw pump, the mixed petroleum liquid is not separated from the gas and liquid, resulting in gas mixing into the liquid and accumulating to a certain extent during the operation of the pump, resulting in gas blockage inside the pump, which in turn affects the normal operation of the pump and causes gas lock. The gas blockage inside the pump will cause the pump to be unable to effectively pump liquid, thereby reducing the working efficiency of the pump, and the long-term gas lock phenomenon will damage the internal structure of the pump, such as aggravating the wear of the bearings and causing seal failure, etc., and the gas lock phenomenon built into the separation tank The gas-liquid separation component realizes the coordinated work of gas and liquid phases. The electric submersible screw pump can effectively separate the gas in the mixed liquid while the petroleum liquid is extracted into the pump body. This design significantly reduces the mixing of gas into the liquid, thereby avoiding internal blockage and gas lock caused by gas accumulation during the operation of the pump. This not only improves the working efficiency of the pump, but also extends the service life of the pump. In addition, the anti-overflow component further enhances the safety of the pump. However, when discharging the gas in the oil, it uses a stirring method to disperse, flow and collide the gas molecules in the oil, which is conducive to the escape of gas molecules from the liquid, thereby reducing the solubility of the gas in the oil. Promote gas-liquid separation, but the separation degree of oil-liquid separation by stirring alone is poor. When the oil is transported through the screw pump, a large amount of gas will still remain in the oil. As mentioned above, the accumulation of gas in the oil to a certain extent will still cause gas blockage in the pump. Summary of the invention

[0004] The object of the present invention is to provide a two-phase cooperative screw pump to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: A dual-phase collaborative screw pump, including a pump body housing, an intermediate connection section, and a lower connection section. The upper and lower sides of the intermediate connection section are respectively threadedly connected to the pump body housing and the lower connection section by threads. A storage chamber is provided inside the lower connection section, and a driving motor is installed inside the storage chamber. The output shaft of the driving motor is fixedly connected to a central connecting rod. One end of the central connecting rod away from the driving motor respectively penetrates through the inside of the intermediate connection section and the pump body housing and is fixedly connected to an upper screw. A pump body upper cover is fixedly connected to the pump body housing, and a liquid outlet pipe is communicated with the pump body upper cover. An oil inlet cavity is provided inside the lower connection section. A plurality of stirring rods are fixedly connected to the outside of the central connecting rod. One end of the stirring rod away from the central connecting rod is fixedly connected to a fixed friction plate. A pushing bladder is integrally formed on the inner wall of the oil inlet cavity. A plurality of moving friction plates are integrally formed on the side of the pushing bladder close to the stirring rod. A plurality of oil inlet channels are integrally formed inside the lower connection section, and the plurality of oil inlet channels are communicated with the oil inlet cavity. An air extraction component is installed inside the intermediate connection section. The air outlet end of the air extraction component is communicated with the pushing bladder. A plurality of oil suction pipes are provided inside the intermediate connection section. The upper end of the oil suction pipe is communicated with the pump body housing, and the lower end of the oil suction pipe penetrates through the inner wall of the lower connection section and is communicated with the inner bottom wall of the oil inlet cavity.

[0006] Preferably, the air extraction component includes an air adsorption chamber provided inside the intermediate connection section. A turbine fan is fixedly connected to the outside of the central connecting rod. The turbine fan is located inside the air adsorption chamber. An air delivery pipe is communicated with the inside of the intermediate connection section. The air outlet of the air delivery pipe is communicated with a first electric control valve. One end of the air delivery pipe away from the first electric control valve penetrates through the inside of the lower connection section and is communicated with the pushing bladder. An air suction filter pipe is communicated with the inside of the air adsorption chamber. The air inlet end of the air suction filter pipe is communicated with the oil inlet cavity.

[0007] Preferably, a plurality of multi-stage baffles are integrally formed on the outside of the central connecting rod. The plurality of multi-stage baffles are all located inside the oil inlet cavity. The plurality of multi-stage baffles divide the oil inlet cavity into upper, middle, and lower suction chambers. A plurality of leakage holes are provided on the outside of the multi-stage baffles.

[0008] Preferably, a plurality of soft elastic blocks are integrally formed inside the pushing bladder. An air outlet channel is provided inside the soft elastic block. The central position of the air outlet channel is spherical, and a moving sphere is placed inside the central spherical cavity of the air outlet channel.

[0009] Preferably, a magnetic attraction block is integrally formed on the inner wall of the spherical cavity at the center position of the soft elastic block. The magnetic attraction block is used to adsorb the moving sphere to move upward during the process of pushing the bladder to generate expansion and stretching, so as to connect the air outlet channel with the internal space of the pushing bladder. When the air outlet channel is connected with the inside of the pushing bladder, the air located inside the pushing bladder will be discharged through the air outlet channel.

[0010] Preferably, a soft pushing elastic membrane is integrally formed on the inner bottom wall of the soft elastic block, and the soft pushing elastic membrane is communicated with the air inlet of the air outlet channel.

[0011] Preferably, a plurality of second electric control valves are communicated inside the lower connecting section. An exhaust and heat dissipation channel is communicated with the bottom of the pushing bladder. The exhaust and heat dissipation channel is communicated with the second electric control valve, and one end of the second electric control valve away from the exhaust and heat dissipation channel is communicated with the storage chamber.

[0012] Preferably, a second one-way exhaust channel is opened at the bottom of the storage chamber, and a one-way valve piece is connected inside the second one-way exhaust channel.

[0013] Preferably, a plurality of first one-way exhaust channels are opened inside the lower connecting section. The first one-way exhaust channels are communicated with the air outlet of the air outlet channel, and the air outlet of the first one-way exhaust channel is communicated with a one-way valve piece.

[0014] Preferably, a bearing rotating sleeve is integrally formed on one side of the multi-stage baffle close to the pushing bladder.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] In the present invention, when performing stirring type oil-gas separation on oil liquid, gas can be extracted through a turbine fan, and after the gas is extracted through the turbine fan, it is transported to the inside of the pushing bladder through an air delivery pipe. When the gas enters the inside of the pushing bladder, the pushing bladder will generate expansion. When the pushing bladder generates expansion, the pushing bladder will drive the moving friction plate to come into contact with the continuously rotating fixed friction plate. When continuously coming into contact with the rotating fixed friction plate, continuous rotational friction will generate heat. In the case of generating heat, the oil liquid in the oil inlet cavity can be heated, and the effect of oil liquid separation is further increased by heating and extracting the gas in the oil liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0018] Figure 2 It is one of the sectional structural diagrams of an embodiment of the present invention;

[0019] Figure 3The second cross-sectional structure schematic diagram in the embodiments of the present invention;

[0020] Figure 4 In the embodiments of the present invention Figure 2 The enlarged structure schematic diagram of area A;

[0021] Figure 5 In the embodiments of the present invention Figure 3 The enlarged structure schematic diagram of area B;

[0022] Figure 6 The structure schematic diagram of the oil inlet channel in the embodiments of the present invention;

[0023] Figure 7 The structure schematic diagram of the soft elastic block in the embodiments of the present invention;

[0024] Figure 8 The structure schematic diagram of the air outlet channel and the moving sphere in the embodiments of the present invention;

[0025] Figure 9 The structure schematic diagram of the magnetic attraction block in the embodiments of the present invention;

[0026] Figure 10 The cross-sectional structure schematic diagram of the pushing bladder in the embodiments of the present invention;

[0027] Figure 11 The structure schematic diagram of the bearing rotating sleeve and the multi-stage baffle in the embodiments of the present invention.

[0028] In the figure: 100, pump body housing; 101, pump body upper cover; 102, liquid outlet pipe; 103, intermediate connection section; 104, lower connection section; 105, storage chamber; 106, drive motor; 107, central connecting rod; 108, stirring rod; 109, upper screw; 110, air adsorption chamber; 111, turbine fan; 112, oil suction pipe; 113, pushing bladder; 114, moving friction plate; 115, fixed friction plate; 116, air delivery pipe; 117, first electric control valve; 118, oil inlet channel; 119, air intake filter pipe; 200, multi-stage baffle; 201, leakage hole; 203, soft elastic block; 204, air outlet channel; 205, moving sphere; 300, magnetic attraction block; 400, soft pushing elastic membrane; 500, second electric control valve; 501, exhaust and heat dissipation channel; 600, first one-way exhaust channel; 700, second one-way exhaust channel; 800, bearing rotating sleeve. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1. As Figure 1 shown, a two-phase cooperative screw pump of the present application includes a pump body housing 100, an intermediate connection section 103, and a lower connection section 104. The upper and lower sides of the intermediate connection section 103 are respectively threadedly connected to the pump body housing 100 and the lower connection section 104 by threads. A storage chamber 105 is provided inside the lower connection section 104, and a driving motor 106 is installed inside the storage chamber 105. The output shaft of the driving motor 106 is fixedly connected to a central connecting rod 107. One end of the central connecting rod 107 away from the driving motor 106 respectively penetrates through the inside of the intermediate connection section 103 and the pump body housing 100 and is fixedly connected to an upper screw 109. A pump body upper cover 101 is fixedly connected to the pump body housing 100, and a liquid outlet pipe 102 is communicated with the pump body upper cover 101. An oil inlet cavity is provided inside the lower connection section 104. A plurality of stirring rods 108 are fixedly connected to the outside of the central connecting rod 107. One end of the stirring rod 108 away from the central connecting rod 107 is fixedly connected to a fixed friction plate 115. A pushing bladder 113 is integrally formed on the inner wall of the oil inlet cavity. A plurality of moving friction plates 114 are integrally formed on one side of the pushing bladder 113 close to the stirring rod 108. A plurality of oil inlet channels 118 are integrally formed inside the lower connection section 104, and the plurality of oil inlet channels 118 are communicated with the oil inlet cavity. An air extraction assembly is installed inside the intermediate connection section 103, and the air outlet end of the air extraction assembly is communicated with the pushing bladder 113. A plurality of oil suction pipes 112 are provided inside the intermediate connection section 103. The upper end of the oil suction pipe 112 is communicated with the pump body housing 100, and the lower end of the oil suction pipe 112 penetrates through the inner wall of the lower connection section 104 and is communicated with the inner bottom wall of the oil inlet cavity.

[0031] As Figure 2 and Figure 4 shown, the air extraction assembly includes an air adsorption chamber 110, which is provided inside the intermediate connection section 103. A turbine fan 111 is fixedly connected to the outside of the central connecting rod 107, and the turbine fan 111 is located inside the air adsorption chamber 110. An air delivery pipe 116 is communicated with the inside of the intermediate connection section 103. The air outlet of the air delivery pipe 116 is communicated with a first electric control valve 117. One end of the air delivery pipe 116 away from the first electric control valve 117 penetrates through the inside of the lower connection section 104 and is communicated with the pushing bladder 113. An air suction filter pipe 119 is communicated with the inside of the air adsorption chamber 110, and the air inlet end of the air suction filter pipe 119 is communicated with the oil inlet cavity.

[0032] Specifically, during operation, the staff starts the drive motor 106 to drive the central connecting rod 107 to rotate. During the process of driving the central connecting rod 107 to rotate, the central connecting rod 107 will drive the upper screw rod 109 located inside the pump body housing 100 to rotate. When the upper screw rod 109 rotates, a certain suction force can be generated. During the process of oil extraction, external oil will enter the oil inlet cavity inside the lower connecting section 104 through multiple oil inlet channels 118. When the oil is in the oil inlet cavity inside the lower connecting section 104, the gas in the oil will be stirred and discharged. After the gas is discharged, the oil will continuously enter the space where the upper screw rod 109 is located through multiple oil suction pipes 112, and the oil after the gas is discharged will be conveyed to the outside by the rotation of the upper screw rod 109.

[0033] Furthermore, when the oil enters the oil inlet cavity, the rotation of the drive motor 106 driving the central connecting rod 107 will further drive the external stirring rod 108 to rotate. During the rotation of the stirring rod 108, the oil in the oil inlet cavity will be continuously stirred, so that the gas molecules in the oil are dispersed during the stirring process, and the gas molecules in the oil will overflow from the oil. During the continuous stirring process, the turbine fan 111 in the middle connecting section 103 and the air adsorption chamber 110 will also be continuously driven by the central connecting rod 107. When continuously driven by the central connecting rod 107, the turbine fan 111 can rotate continuously. During the continuous rotation of the turbine fan 111, it will cooperate with the fixed friction plate 115 to continuously suck the gas in the oil into the air adsorption chamber 110. And when the gas continuously enters the air adsorption chamber 110, the gas accumulated inside the air adsorption chamber 110 will continuously enter the inside of the air pipe 116 through the first electric control valve 117. When the gas continuously enters the inside of the air pipe 116, the air pipe 116 will continuously convey the gas from the oil inlet cavity to the inside of the push bladder 113. When the gas continuously enters the push bladder 113 unidirectionally, the push bladder 113 will expand. When the push bladder 113 expands, it will drive the moving friction plate 114 on the outer wall to move. During the process of driving the external moving friction plate 114 to move, the moving friction plate 114 will come into contact with the fixed friction plate 115. During the process of the moving friction plate 114 coming into contact with the fixed friction plate 115, the continuously rotating fixed friction plate 115 will continuously generate friction with the moving friction plate 114. When the fixed friction plate 115 and the moving friction plate 114 continuously generate friction, the two will show a temperature increase phenomenon. When the two show a temperature increase phenomenon, the oil in the oil inlet cavity can be heated. By heating the oil and cooperating with the rotation and stirring of the stirring rod 108, a further separation effect of the gas inside the oil can be achieved. And after the oil and gas are separated from the oil.

[0034] As shown Figures 2 - 5 in the figure, a plurality of multi-stage baffles 200 are integrally formed on the outside of the central connecting rod 107. The plurality of multi-stage baffles 200 are all located inside the oil inlet cavity. The plurality of multi-stage baffles 200 divide the oil inlet cavity into upper, middle and lower suction cavities. A plurality of leakage holes 201 are formed on the outside of the multi-stage baffles 200.

[0035] Specifically, during the use process, when the oil inlet cavity is divided into upper, middle and lower suction cavities by a plurality of multi-stage baffles 200, the oil will first enter the lower suction cavity at the bottom. When the oil enters the lower suction cavity at the bottom, the oil will be blocked by the multi-stage baffles 200, reducing the situation of a large amount of oil entering the middle suction cavity and the upper suction cavity. And when the turbine fan 111 continuously rotates and continuously sucks out the air inside the upper suction cavity and the middle suction cavity, a negative pressure state can be formed inside the upper suction cavity and the middle suction cavity. In the case of forming a negative pressure state, the gas-liquid separation state inside the oil inlet cavity can be further accelerated.

[0036] As shown Figure 11 in the figure, a bearing rotating sleeve 800 is integrally formed on one side of the multi-stage baffle 200 close to the pushing bladder 113. The bearing rotating sleeve 800 can rotate outside the multi-stage baffle 200. When the bearing rotating sleeve 800 rotates outside the multi-stage baffle 200, it can avoid the continuously rotating multi-stage baffle 200 continuously rubbing against the pushing bladder 113, resulting in excessive wear of the pushing bladder 113.

[0037] The technical solutions in the above embodiments of the present application at least have the following technical effects or advantages: Compared with the prior art, in this embodiment, when performing stirring type oil-gas separation on the oil, the gas can be extracted through the turbine fan 111, and after the gas is extracted through the turbine fan 111, it is transported to the inside of the pushing bladder 113 through the air duct 116. When the gas enters the inside of the pushing bladder 113, the pushing bladder 113 will expand. When the pushing bladder 113 expands, the pushing bladder 113 will drive the moving friction plate 114 to come into contact with the continuously rotating fixed friction plate 115. When continuously coming into contact with the rotating fixed friction plate 115, continuous rotational friction will generate heat. In the case of generating heat, the oil in the oil inlet cavity can be heated, and by heating and extracting the gas in the oil, the oil separation effect can be further increased.

[0038] Embodiment 2. Considering that during the use process, although pushing the bladder 113 can drive the moving friction plate 114 to contact the fixed friction plate 115 during the inflation process, and heat is generated through friction to further increase the exhaust effect on the internal oil, during the continuous rotation process, the continuous friction between the moving friction plate 114 and the fixed friction plate 115 may cause the temperature to be too high. Once the internal temperature of the oil is too high, a series of adverse effects may occur to the oil. To solve the above technical problems, the present application proposes the following technical solutions, specifically:

[0039] As Figures 1 - 9 shown, a plurality of soft elastic blocks 203 are integrally formed inside the pushing bladder 113. An air outlet channel 204 is opened inside the soft elastic block 203. The central position of the air outlet channel 204 is spherical, and a moving sphere 205 is placed inside the central spherical cavity of the air outlet channel 204.

[0040] Specifically, during the process of the pushing bladder 113 expanding, the wall thickness of the pushing bladder 113 will be stretched and become slender. When the wall thickness of the pushing bladder 113 is stretched, the pushing bladder 113 will also drive the soft elastic block 203 to be stretched. When the soft elastic block 203 is stretched, the space inside the air outlet channel 204 increases. When the space inside the air outlet channel 204 increases, the air pressure inside the pushing bladder 113 is relatively high. In the case of relatively high air pressure, the gas will push open the moving sphere 205, and thus the excess gas will be discharged through the air outlet channel 204. When the excess gas is discharged, the pushing bladder 113 will contract. When the pushing bladder 113 contracts, it will drive the moving friction plate 114 to return to its original position and no longer contact the fixed friction plate 115, avoiding continuous contact between the moving friction plate 114 and the fixed friction plate 115, thus preventing the temperature from being too high.

[0041] As Figure 5 shown, a plurality of first one-way exhaust channels 600 are opened inside the lower connecting section 104. The first one-way exhaust channels 600 are communicated with the air outlet of the air outlet channel 204, and a one-way valve plate is communicated with the air outlet of the first one-way exhaust channels 600.

[0042] Specifically, during the use process, when the gas inside the pushing bladder 113 is discharged through the air outlet channel 204, it can be discharged to the outside through the first one-way exhaust channels 600 as a whole, and the setting of the one-way valve plate can prevent the oil from entering the inside of the first one-way exhaust channels 600 (not shown in the figure).

[0043] As Figure 2As shown, the interior of the lower connecting section 104 communicates with a plurality of second electric control valves 500. The bottom of the pushing bladder 113 is connected to an exhaust and heat dissipation channel 501. The exhaust and heat dissipation channel 501 is connected to the second electric control valve 500. One end of the second electric control valve 500 away from the exhaust and heat dissipation channel 501 is connected to the storage chamber 105. A second one-way exhaust channel 700 is provided at the bottom of the storage chamber 105, and a one-way valve piece is connected inside the second one-way exhaust channel 700.

[0044] Specifically, when there is too much gas inside the pushing bladder 113, the exhaust and heat dissipation channel 501 can be synchronously opened. In the state where the exhaust and heat dissipation channel 501 is open, the gas can be transported into the interior of the storage chamber 105 through the second electric control valve 500. When the gas enters the interior of the storage chamber 105, it can cool the drive motor 106. At the same time, the gas that enters the interior of the storage chamber 105 can also be discharged through the second one-way exhaust channel 700, and the one-way valve piece (not shown in the figure) connected to the second one-way exhaust channel 700 can prevent oil from entering the interior of the second one-way exhaust channel 700.

[0045] The technical solution in the above embodiment of the present application has at least the following technical effects or advantages: Compared with Embodiment 1, in this embodiment, once the temperature between the moving friction plate 114 and the fixed friction plate 115 is too high, and the air pressure inside the pushing bladder 113 is too much and expands to a specified degree, the stretching of the pushing bladder 113 will drive the soft elastic block 203 to stretch. When the soft elastic block 203 stretches, the space of the air outlet channel 204 increases. When the space of the air outlet channel 204 increases, too much air pressure will push open the moving sphere 205 and discharge it through the air outlet channel 204, thereby reducing the amount of gas inside the pushing bladder 113. When the gas in the pushing bladder 113 decreases, it will condense. The condensed pushing bladder 113 will drive the moving friction plate 114 away from the fixed friction plate 115, reducing the friction between the moving friction plate 114 and the fixed friction plate 115, reducing heat generation, and avoiding the situation of too high temperature.

[0046] Embodiment 3: Considering that the moving sphere 205 is a sphere, during the process of exhausting gas from the pushing bladder 113 through the air outlet channel 204, the moving sphere 205 will frequently block at the inlet position of the air outlet channel 204 due to gravity, resulting in a slow exhaust speed, and it can only push up the moving sphere 205 to achieve exhaust under high air pressure. During the exhaust process, there may be a phenomenon that the exhaust volume is too small and the pushing bladder 113 quickly enters gas and returns to the expanded state again. To solve the above technical problems, the present application proposes the following technical solution:

[0047] As Figure 8 andFigure 9 As shown, a magnetic attraction block 300 is integrally formed on the inner wall of the spherical cavity at the center of the soft elastic block 203. The magnetic attraction block 300 is used to adsorb and move the moving sphere 205 upward during the process of pushing the airbag 113 to expand and stretch, so as to connect the air outlet channel 204 with the internal space of the airbag 113. When the air outlet channel 204 is connected to the inside of the airbag 113, the air located inside the airbag 113 will be discharged through the air outlet channel 204.

[0048] Specifically, during use, when the airbag 113 expands to a specified degree, it will drive the soft elastic block 203 to stretch. When the soft elastic block 203 stretches, the internal space of the air outlet channel 204 will increase. When the internal space of the air outlet channel 204 increases, the magnetic attraction block 300 will stretch and displace together with the soft elastic block 203. When the magnetic attraction block 300 stretches and displaces together, it will adsorb and move the moving sphere 205 upward, so that more exhaust space is left in the air outlet channel 204, the gas is quickly discharged, and the gas discharge volume is increased. When the gas is discharged, the airbag 113 will shrink. When the airbag 113 shrinks, the soft elastic block 203 will also shrink. When the soft elastic block 203 shrinks, it will drive the magnetic attraction block 300 and the moving sphere 205 to return to their original positions again. After the moving sphere 205 returns to its original position, it will close the air outlet channel 204 again.

[0049] The technical solution in the embodiment of the present application above has at least the following technical effects or advantages: Compared with Embodiment 2, in this embodiment, when the soft elastic block 203 stretches, the magnetic attraction block 300 will drive the moving sphere 205 to adsorb and move upward. During the adsorption and upward movement process, the situation where the moving sphere 205 blocks the air outlet channel 204 can be reduced, so that more exhaust channels are exposed during the exhaust process, the overall exhaust volume is increased, the gas is quickly discharged, and the phenomenon of insufficient exhaust volume is reduced.

[0050] Embodiment 4. Considering that when the soft elastic block 203 stretches, the internal space of the air outlet channel 204 will be stretched horizontally. When stretched horizontally, the spherical space in the middle of the air outlet channel 204 will also be stretched into a cone. In the case of a cone, the inner wall of the air outlet channel 204 close to the moving sphere 205 will squeeze the moving sphere 205, resulting in the separation between the moving sphere 205 and the magnetic attraction block 300. Once the moving sphere 205 and the magnetic attraction block 300 are separated, the air outlet channel 204 will be blocked, resulting in unsmooth exhaust. To solve the above technical problems, the present application proposes the following technical solutions, specifically:

[0051] AsFigure 9 As shown in the figure, a soft pushing elastic membrane 400 is integrally formed on the inner bottom wall of the soft elastic block 203, and the soft pushing elastic membrane 400 is communicated with the air inlet of the air outlet channel 204.

[0052] Specifically, during the use process, when the magnetic attraction block 300 adsorbs and moves the moving sphere 205 upward, a large amount of gas in the pushing bladder 113 enters the inner wall of the air outlet channel 204. When a large amount of gas enters the inside of the air outlet channel 204, a small amount of gas continuously pours into the inside of the soft pushing elastic membrane 400, causing the soft pushing elastic membrane 400 to expand. When the soft pushing elastic membrane 400 expands, it can lift the moving sphere 205. Thus, when the upper sides on both sides of the inside of the air outlet channel 204 squeeze the moving sphere 205 when the magnetic attraction block 300 adsorbs the moving sphere 205 to a specified degree and the moving sphere 205 is about to break away from the adsorption of the magnetic attraction block 300, it can provide bottom support for the moving sphere 205, so as to ensure that the moving sphere 205 does not quickly fall and block the air outlet channel 204, and further ensure the stability during the exhaust process.

[0053] The technical solution in the above embodiment of the present application has at least the following technical effects or advantages: Compared with Embodiment 3, in this embodiment, during the exhaust process, gas will pour into the inside of the soft pushing elastic membrane 400. When the soft pushing elastic membrane 400 expands, it will lift the moving sphere 205. By lifting the moving sphere 205, it can ensure the adsorption stability of the magnetic attraction block 300 to the moving sphere 205, ensure the smoothness of the exhaust of the air outlet channel 204 during the exhaust process, and ensure the stability of the air outlet channel 204 during the exhaust process.

[0054] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A two-phase collaborative screw pump, comprising a pump body housing (100), an intermediate connection section (103) and a lower connection section (104). The upper and lower sides of the intermediate connection section (103) are respectively threadedly connected to the pump body housing (100) and the lower connection section (104) by threads. A storage chamber (105) is provided inside the lower connection section (104). A drive motor (106) is installed inside the storage chamber (105). The output shaft of the drive motor (106) is fixedly connected to a central connecting rod (107). One end of the central connecting rod (107) away from the drive motor (106) respectively penetrates through the inside of the intermediate connection section (103) and the pump body housing (100) and is fixedly connected to an upper screw (109). A pump body upper cover (101) is fixedly connected to the pump body housing (100). A liquid outlet pipe (102) is communicated with the pump body upper cover (101). It is characterized in that: An oil inlet cavity is formed inside the lower connecting section (104). A plurality of stirring rods (108) are fixedly connected to the outside of the central connecting rod (107). A fixed friction plate (115) is fixedly connected to one end of the stirring rod (108) away from the central connecting rod (107). A pushing bladder (113) is integrally formed on the inner wall of the oil inlet cavity. A plurality of moving friction plates (114) are integrally formed on one side of the pushing bladder (113) close to the stirring rod (108). A plurality of oil inlet channels (118) are integrally formed inside the lower connecting section (104). The plurality of oil inlet channels (118) communicate with the oil inlet cavity. An air extraction assembly is installed inside the middle connecting section (103). The air outlet end of the air extraction assembly communicates with the pushing bladder (113). A plurality of oil suction pipes (112) are formed inside the middle connecting section (103). The upper end of the oil suction pipe (112) communicates with the pump housing (100). The lower end of the oil suction pipe (112) penetrates through the inner wall of the lower connecting section (104) and communicates with the inner bottom wall of the oil inlet cavity; A plurality of soft elastic blocks (203) are integrally formed inside the pushing bladder (113). An air outlet channel (204) is formed inside the soft elastic block (203). The central position of the air outlet channel (204) is spherical. A moving sphere (205) is placed inside the central spherical cavity of the air outlet channel (204).

2. The duplex synergistic screw pump according to claim 1, characterized in that: The air extraction assembly includes an air adsorption chamber (110) formed inside the middle connecting section (103). A turbine fan (111) is fixedly connected to the outside of the central connecting rod (107). The turbine fan (111) is located inside the air adsorption chamber (110). An air delivery pipe (116) communicates inside the middle connecting section (103). The air outlet of the air delivery pipe (116) communicates with a first electric control valve (117). One end of the air delivery pipe (116) away from the first electric control valve (117) penetrates through the inside of the lower connecting section (104) and communicates with the pushing bladder (113). An air suction filter pipe (119) communicates inside the air adsorption chamber (110). The air inlet end of the air suction filter pipe (119) communicates with the oil inlet cavity.

3. The double-phase collaborative screw pump according to claim 1, wherein: A plurality of multi-stage baffles (200) are integrally formed on the outside of the central connecting rod (107). The plurality of multi-stage baffles (200) are all located inside the oil inlet cavity. The plurality of multi-stage baffles (200) divide the oil inlet cavity into upper, middle and lower suction chambers. A plurality of leakage holes (201) are formed on the outside of the multi-stage baffle (200).

4. A dual-phase collaborative screw pump according to claim 1, characterized in that: A magnetic attraction block (300) is integrally formed on the inner wall of the spherical cavity at the central position of the soft elastic block (203). The magnetic attraction block (300) is used to adsorb and move the moving sphere (205) upward during the process of pushing the bladder (113) to generate expansion and stretching, so as to connect the air outlet channel (204) with the internal space of the bladder (113). When the air outlet channel (204) is connected to the inside of the bladder (113), the air located inside the bladder (113) will be discharged through the air outlet channel (204).

5. The double-phase synergistic screw pump according to claim 4, characterized in that: A soft push elastic membrane (400) is integrally formed on the inner bottom wall of the soft elastic block (203). The soft push elastic membrane (400) is connected to the air inlet of the air outlet channel (204).

6. The dual-phase collaborative screw pump according to claim 1, characterized in that: A plurality of second electric control valves (500) are internally connected to the lower connecting section (104). A exhaust and heat dissipation channel (501) is connected to the bottom of the bladder (113). The exhaust and heat dissipation channel (501) is connected to the second electric control valve (500). One end of the second electric control valve (500) far from the exhaust and heat dissipation channel (501) is connected to the storage chamber (105).

7. A dual-phase synergistic screw pump according to claim 1, characterized in that: A second one-way exhaust channel (700) is opened at the bottom of the storage chamber (105). A one-way valve piece is connected inside the second one-way exhaust channel (700).

8. A dual-phase cooperative screw pump according to claim 5, characterized in that: A plurality of first one-way exhaust channels (600) are opened inside the lower connecting section (104). The first one-way exhaust channels (600) are connected to the air outlet of the air outlet channel (204). The air outlet of the first one-way exhaust channel (600) is connected to a one-way valve piece.

9. The dual-phase collaborative screw pump according to claim 3, wherein: A bearing rotating sleeve (800) is integrally formed on one side of the multi-stage baffle (200) close to the bladder (113).

Images