Steady flow assembly and screw pump

Abstract

The application relates to a flow stabilizing assembly and a screw pump. The flow stabilizing assembly comprises a main body, a throttling member and a flow stabilizing member. The main body encloses a flow passage of the flow stabilizing assembly. The main body comprises an inlet end and an outlet end, which are located at opposite sides of the main body in the extension direction of the flow passage. The throttling member is located in the flow passage and is used to form a vortex flow of fluid in the flow passage. The flow stabilizing member is located in the flow passage and is arranged on the side of the throttling member close to the outlet end, and is used to uniformly distribute the fluid pressure in the flow passage. The flow passage comprises a vortex chamber between the throttling member and the flow stabilizing member. The design of the flow stabilizing assembly enables the medium to be subjected to centrifugal force during the process of entering the vortex chamber, so that the medium can be more uniformly dispersed to each position in the chamber, avoiding the local turbulent flow. At the same time, the pressure difference of a single point in the medium can be reduced, so that the fluid medium pumped by the screw pump has higher precision, more stable pressure and better stability.

Description

Technical Field

[0001] This application relates to the field of mechanical pumps, and more particularly to a flow stabilizing component and a screw pump. Background Technology

[0002] Screw pumps are often used to transport fluid media. For high-precision, high-requirement products, ensuring stable flow rate during transport is a challenge in the field of mechanical pumps. To solve this problem, some users employ higher-precision, higher-performance mechanical pumps, but this undoubtedly increases costs. Utility Model Content

[0003] This application provides a flow stabilizing component and a screw pump to address some or all of the shortcomings in the related technologies.

[0004] The flow stabilizing assembly provided in this application is applied to a screw pump. The flow stabilizing assembly includes a main body, a throttling element, and a flow stabilizer. The main body encloses a flow cavity forming the flow stabilizing assembly. The main body includes an inlet end and an outlet end, located on opposite sides of the main body along the extension direction of the flow cavity. The throttling element is located within the flow cavity and is used to create a vortex in the fluid within the flow cavity. The flow stabilizer is located within the flow cavity and is disposed on the side of the throttling element near the outlet end, used to uniformly distribute the fluid pressure within the flow cavity. The flow cavity includes a vortex chamber located between the throttling element and the flow stabilizer.

[0005] Optionally, the throttling element includes a converging surface and a vortex orifice communicating with the vortex chamber. The converging surface is located on the side of the throttling element near the inlet end, and the vortex orifice is located at the center of the converging surface and is coaxially arranged with the flow chamber. The inner diameter of the converging surface gradually decreases in the direction from the inlet end to the outlet end.

[0006] Optionally, the throttling element further includes a diffuser surface located on the side of the throttling element facing the vortex chamber. The inner diameter of the diffuser surface gradually increases in the direction from the inlet end to the outlet end.

[0007] Optionally, the main body further includes a first housing near the inlet end and a second housing near the outlet end. The first housing and the second housing are detachably connected to each other.

[0008] Optionally, the throttling element is connected to the inner wall of the first housing and divides the flow cavity in the first housing into an inlet chamber and a connecting groove. One end of the second housing is inserted into the connecting groove and forms the vortex chamber.

[0009] Optionally, the current stabilizer protrudes from the end of the second housing. When the first housing is connected to the second housing, the current stabilizer is inserted into the connecting groove.

[0010] Optionally, the flow stabilizer includes a tapered surface located at one end of the flow stabilizer facing the throttling element. The outer diameter of the tapered surface gradually increases in the direction from the inlet end to the outlet end.

[0011] Optionally, the flow stabilizer divides the flow cavity located in the second housing into an outlet chamber. The flow stabilizer also includes a flow stabilizing orifice disposed on the radially peripheral side of the flow stabilizer. The flow stabilizing orifice connects the vortex chamber and the outlet chamber.

[0012] Optionally, the number of flow stabilizing holes is multiple, and they are evenly distributed on the radial periphery of the flow stabilizing element.

[0013] Optionally, the first housing includes a snap-fit ​​portion disposed on the inner wall of the first housing and located at one end of the first housing facing the second housing. The second housing includes an annular snap-fit ​​groove disposed on the outer surface of the second housing and located at one end of the second housing facing the first housing. When the first housing and the second housing are connected, the snap-fit ​​portion snaps into the snap-fit ​​groove.

[0014] Optionally, the flow stabilizing assembly further includes a seal disposed at the inlet end and / or outlet end of the main body and used to connect to the components of the screw pump.

[0015] This application also provides a screw pump, which includes a suction chamber housing and a flow stabilizing assembly as described above. The suction chamber housing encloses a suction cavity, the inlet end of the flow stabilizing assembly is connected to the suction chamber housing, and the suction cavity communicates with a flow cavity.

[0016] Optionally, the flow stabilizing assembly further includes a seal disposed at the inlet end, and the main body is sealed to the suction chamber housing through the seal.

[0017] The technical solutions provided by the embodiments of this application may include the following beneficial effects:

[0018] As can be seen from the above embodiments, the design of the flow stabilizing component in this application ensures that the medium is subjected to centrifugal force during its entry into the vortex chamber, thereby dispersing it more evenly throughout the chamber and preventing localized turbulence. Simultaneously, the flow stabilizing component design allows the fluid in the vortex chamber to flow out with more uniform pressure and a more stable velocity, reducing pressure differences at single points in the medium. This results in the screw pump delivering fluid with higher precision, more stable pressure, and better stability.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a partial structural schematic diagram of a screw pump in one embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the current stabilizing component in one embodiment of this application;

[0023] Figure 3 This is a cross-sectional view of a current stabilizing component in one embodiment of this application;

[0024] Figure 4 This is a cross-sectional view of the current stabilizing component in one embodiment of this application from another perspective;

[0025] Figure 5 This is a schematic diagram of the structure of the first housing in one embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the structure of the second shell in one embodiment of this application;

[0027] Figure 7 This is a simulation diagram of the operation process of the current stabilizing component in one embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Screw pump; 1. Flow stabilizing assembly; 11. Main body; 111. Inlet end; 112. Outlet end; 113. First housing; 1131. Snap-fit ​​part; 114. Second housing; 1141. Snap-fit ​​groove; 115. Mounting groove; 12. Flow chamber; 121. Vortex chamber; 122. Inlet chamber; 123. Connecting groove; 124. Outlet chamber; 13. Throttling element; 131. Flow gathering surface; 132. Vortex orifice; 133. Flow spreading surface; 14. Flow stabilizing element; 141. Conical surface; 142. Flow stabilizing orifice; 15. Seal; 2. Suction chamber housing; 21. Suction chamber; M. Axis; X. Extension direction; Y. Radial. Detailed Implementation

[0030] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0031] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0032] like Figure 1 As shown, this application provides a screw pump 100, including a flow stabilizing assembly 1 and a suction chamber housing 2. The suction chamber housing 2 encloses a suction cavity 21. The inlet end 111 of the flow stabilizing assembly 1 is connected to the suction chamber housing 2, and the suction cavity 21 communicates with the flow passage 12.

[0033] During the operation of the screw pump 100, as the rotating shaft rotates, the suction chamber 21 draws in the fluid medium from the inlet and pumps it out through its outlet. The screw pump 100 of this application, through the design of the flow stabilizing component 1, directs the fluid medium pumped by the suction chamber 21 into the flow stabilizing component 1. This allows the outflowing medium to have a more stable flow rate and more uniform pressure through the flow stabilizing effect of the component 1, thereby better meeting the high precision and high stability requirements of the product line.

[0034] like Figure 2 and Figure 3As shown, the flow stabilizing assembly 1 provided in this application includes a main body 11, a throttling element 13, and a flow stabilizing element 14. The main body 11 encloses a flow cavity 12 forming the flow stabilizing assembly 1. The main body 11 includes an inlet end 111 and an outlet end 112, which are located on opposite sides of the main body 11 along the extending direction X of the flow cavity 12. The throttling element 13 is located within the flow cavity 12 and is used to form a vortex in the fluid within the flow cavity 12. The flow stabilizing element 14 is located within the flow cavity 12 and is disposed on the side of the throttling element 13 near the outlet end 112, for uniformly distributing the fluid pressure within the flow cavity 12. The flow cavity 12 includes a vortex chamber 121 located between the throttling element 13 and the flow stabilizing element 14.

[0035] During the operation of the screw pump 100, when the fluid medium flows into the flow stabilizing component 1 from the inlet end 111, the throttling element 13 causes the fluid medium to form a vortex, thus entering the vortex chamber 121 in the form of a rotating vortex, and then flowing out of the flow chamber 12 evenly through the flow stabilizing element 14. This design ensures that the medium is subjected to centrifugal force during its entry into the vortex chamber 121, allowing it to be more evenly distributed throughout the chamber and preventing localized turbulence. Simultaneously, the flow stabilizing element 14 allows the fluid in the vortex chamber 121 to flow out with a more uniform pressure and a more stable flow rate, thereby reducing pressure differences at single points in the medium. This results in the screw pump 100 pumping fluid with higher precision, more stable pressure, and better stability.

[0036] In an optional embodiment, combined with Figure 3 and Figure 4 As shown, the throttling element 13 includes a converging surface 131 and a vortex orifice 132 communicating with the vortex chamber 121. The converging surface 131 is located on the side of the throttling element 13 near the inlet end 111, and the vortex orifice 132 is located at the center of the converging surface 131 and is coaxially arranged with the flow chamber 12 (i.e., axis M shown in the figure). The inner diameter of the converging surface 131 gradually decreases in the direction from the inlet end 111 to the outlet end 112.

[0037] During the operation of the screw pump 100, the pressure of the fluid medium pumped through the suction chamber 21 is relatively uneven and the stability is relatively poor. Therefore, when the fluid medium flows into the flow stabilizing component 1 from the inlet end 111, there may be turbulence or large pressure differences at different positions. The flow stabilizing component 1 of this application, through the design of the throttling element 13, causes the fluid medium to first collide with the flow-gathering surface 131, and then flow into the vortex hole 132 along the flow-gathering surface 131. During this process, a vortex is formed at the vortex hole 132, and then more evenly dispersed in the vortex chamber 121.

[0038] In an optional embodiment, the throttling element 13 further includes a diffuser surface 133 located on the side of the throttling element 13 facing the vortex chamber 121. The inner diameter of the diffuser surface 133 gradually increases in the direction from the inlet end 111 to the outlet end 112.

[0039] When the fluid medium enters the vortex chamber 121 through the vortex hole 132 in the form of a vortex, due to the design of the diffuser surface 133 of the flow stabilizing component 1 in this application, the fluid medium can be more evenly distributed in various positions of the vortex chamber 121, further ensuring that the fluid medium can flow out in a more uniform and stable state, thereby ensuring the output stability and output accuracy of the screw pump 100.

[0040] In an optional embodiment, the main body 11 further includes a first housing 113 near the inlet end 111 and a second housing 114 near the outlet end 112. The first housing 113 and the second housing 114 are detachably connected to each other.

[0041] The current stabilizing component 1 of this application is designed with the main body 11 in the form of a detachable first shell 113 and a second shell 114, which makes the current stabilizing component 1 more convenient in the process of assembly, disassembly, maintenance and cleaning. This design effectively reduces the production cost, use cost and subsequent maintenance cost of the current stabilizing component 1, and improves its practicality and economy.

[0042] In an optional embodiment, the throttling element 13 is connected to the inner wall of the first housing 113 and divides the flow cavity 12 located in the first housing 113 into an inlet chamber 122 and a connecting groove 123. One end of the second housing 114 is inserted into the connecting groove 123 and forms a vortex chamber 121.

[0043] Combination Figure 5 As shown, the flow stabilizing assembly 1 of this application divides the internal cavity into an inlet chamber 122 and a connecting groove 123 by setting a throttling element 13. The second housing 114 is fixed through the connecting groove 123, and a vortex chamber 121 is formed at the same time. This design not only simplifies the processing of the vortex chamber 121, but also makes it easier to clean and maintain the vortex chamber 121 and the throttling element 13, further improving the practicality of the flow stabilizing assembly 1 and reducing maintenance costs.

[0044] In an optional embodiment, the current stabilizer 14 protrudes from the end of the second housing 114. When the first housing 113 is connected to the second housing 114, the current stabilizer 14 is inserted into the connecting groove 123.

[0045] Combination Figure 6As shown, the flow stabilizer 14 protrudes from the end of the second housing 114. This allows the flow stabilizer 14 to be inserted into the connecting groove 123 during installation of the first housing 113 and the second housing 114, thereby forming a vortex chamber 121 between the flow stabilizer 14 and the throttling element 13. This design not only improves the flow efficiency of the fluid medium and ensures its flow stabilization effect, but also makes it easier to disassemble and maintain the flow stabilizer 14, further improving the practicality of the flow stabilization assembly 1 and reducing maintenance costs.

[0046] In an optional embodiment, the flow stabilizer 14 includes a tapered surface 141 located at one end of the flow stabilizer 14 facing the throttling element 13. The outer diameter of the tapered surface 141 gradually increases in the direction from the inlet end 111 to the outlet end 112.

[0047] During the operation of the screw pump 100, some fluid flows in from the inlet chamber 122 and passes directly through the vortex hole 132 without forming a vortex on the convergence surface 131. Therefore, this application designs a conical surface 141 on the end face of the flow stabilizer 14, so that the fluid that does not form a vortex will impact the center of the conical surface 141 after passing through the vortex hole 132. Since the structure of the conical surface 141 is similar to that of an umbrella surface, this fluid will be dispersed along the conical surface 141 to the periphery of the vortex chamber 121, thus achieving the effect of uniformly dispersing the fluid. It can be seen that the design of the conical surface 141 further ensures the flow stabilization effect of the flow stabilization component 1, making the fluid medium output by the screw pump 100 more uniform and stable.

[0048] In an optional embodiment, the flow stabilizer 14 divides the flow cavity 12 located in the second housing 114 to form an outlet chamber 124. The flow stabilizer 14 also includes a flow stabilizing orifice 142, which is disposed on the circumferential side of the flow stabilizer 14 in the radial Y direction. The flow stabilizing orifice 142 connects the vortex chamber 121 and the outlet chamber 124.

[0049] When the fluid medium is evenly dispersed in the vortex chamber 121, it can flow evenly into the oral chamber 124 through the flow stabilizing hole 142 on the periphery of the flow stabilizer 14. The design of the flow stabilizing hole 142 further disperses the fluid in the vortex chamber 121 into the form of a water column, thereby effectively reducing the single-point pressure difference and ensuring the stability of the output fluid.

[0050] like Figure 6 As shown, in an optional embodiment, there are multiple flow stabilizing orifices 142, which are evenly distributed around the flow stabilizer 14 in the radial Y direction. This design allows the fluid in the vortex chamber 121 to be evenly dispersed into multiple water columns and flow out from the outlet chamber 124, further reducing the pressure difference between different areas, so that the fluid output by the screw pump 100 has a more balanced pressure and a more stable flow rate.

[0051] Of course, in other alternative embodiments, multiple flow stabilizing holes 142 with different inner diameters can be designed at different positions of the flow stabilizing component 14. For example, based on the flow rate of the fluid medium in the vortex chamber 121, the inner diameter of the flow stabilizing hole 142 corresponding to the area with a larger flow rate can be designed to be larger, while the inner diameter of the flow stabilizing hole 142 corresponding to the area with a smaller flow rate can be designed to be smaller. This can further reduce the pressure difference between the water columns output by different flow stabilizing holes 142 and improve the performance of the flow stabilizing component 1. Therefore, this application does not impose specific limitations on the number and distribution of the flow stabilizing holes 142.

[0052] like Figure 7 The diagram shown illustrates the working process of the flow stabilizing component 1 in one embodiment of this application. The fluid medium flows in the direction indicated by the red arrows, passing sequentially through the inlet chamber 122 and the vortex orifice 132 before being evenly dispersed within the vortex chamber 121. Subsequently, it flows out from the various flow stabilizing orifices 142 on the periphery of the flow stabilizing component 14 into the outlet chamber 124. It is evident that the design of the flow stabilizing component 1 in this application uniformly outputs the fluid pumped by the screw pump 100 as multiple water columns with smaller pressure differentials, thereby achieving more precise and stable fluid output.

[0053] In an optional embodiment, the first housing 113 includes a snap-fit ​​portion 1131 disposed on the inner wall of the first housing 113 and located at the end of the first housing 113 facing the second housing 114. The second housing 114 includes an annular snap-fit ​​groove 1141 disposed on the outer surface of the second housing 114 and located at the end of the second housing 114 facing the first housing 113. When the first housing 113 and the second housing 114 are connected, the snap-fit ​​portion 1131 is snapped into place with the snap-fit ​​groove 1141.

[0054] In the embodiments provided in this application, the first housing 113 and the second housing 114 are designed to be connected by a snap-fit ​​mechanism. This design effectively simplifies the assembly and disassembly process of the flow stabilizing component 1 and ensures the stability of the connection between the first housing 113 and the second housing 114, thus guaranteeing the stability and safety of the flow stabilizing component 1 during use. In other optional embodiments, the connection method of the first housing 113 and the second housing 114 can be adjusted according to the actual application scenario of the screw pump 100 and user needs. For example, it can be designed as a magnetic connection, an interference fit, or a threaded fit, thereby balancing convenience, sealing, stability, and practicality. Therefore, this application does not impose any limitations on this.

[0055] In an optional embodiment, the flow stabilizing assembly 1 further includes a seal 15 disposed at the inlet end 111 and the outlet end 112 of the main body 11, and used to connect to the components of the screw pump 100.

[0056] In the embodiments provided in this application, taking the seal 15 at the inlet end 111 as an example, the surface of the seal 15 is attached to the outer surface of the suction chamber housing 2, and thus fixed by bolts. An annular groove is also designed on the surface of the seal 15 along the extension direction X for installing sealing rings and other structures, thereby further ensuring the sealing performance of the flow stabilizing assembly 1 after installation and preventing fluid medium leakage from gaps.

[0057] Of course, in other alternative embodiments, the structure of the seal 15 can also be adjusted according to the actual application scenario and user needs of the screw pump 100. For example, the seal 15 can be designed only at the inlet end 111 of the main body 11; the seal 15 can be designed as a metal material and connected by magnetic attraction; the seal 15 can be designed as a movable snap-fit ​​and fixed to the flow stabilizing component 1 by snap-fit ​​connection, etc. Therefore, this application does not impose any limitations on this.

[0058] In addition, as can be seen from the figure, multiple mounting slots 115 are designed on the surface of the main body 11. The design of the mounting slots 115 makes the surfaces of the first housing 113 and the second housing 114 form a plane, so that the current stabilizing component 1 can be fixed by clamping the mounting slots 115 on both sides with external equipment during the installation or disassembly process, so as to avoid the current stabilizing component 1 from rotating during the assembly or disassembly process, thereby affecting the working efficiency.

[0059] Overall, during the operation of the screw pump 100, as the rotating shaft rotates, the suction chamber 21 draws in the fluid medium from the inlet and pumps it through the outlet to the flow chamber 12 of the flow stabilizing component 1. In the flow chamber 12, most of the fluid medium first impacts the convergence surface 131 and then flows along the convergence surface 131 into the vortex hole 132, forming a vortex in the vortex chamber 121. Another portion of the fluid that directly passes through the vortex hole 132 is also dispersed in the vortex chamber 121 along the conical surface 141 of the flow stabilizing component 14. In this way, the fluid that originally flowed along the axis M is evenly dispersed into the vortex chamber 121 under the action of centrifugal force, avoiding local turbulence in the fluid medium. Subsequently, the fluid in the vortex chamber 121 flows out along multiple flow stabilizing holes 142 around the flow stabilizer 14, thus dispersing into multiple pressure-equal water columns, and flowing out from the outlet chamber 124, so that the fluid pumped by the screw pump 100 has a more balanced pressure and a more stable flow rate to meet the precision and stability requirements of the production line.

[0060] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A current stabilizing component, characterized in that, Applied to screw pumps, the flow stabilizing assembly includes: The main body encloses a flow cavity forming the current stabilizing component; the main body includes an inlet end and an outlet end, which are located on opposite sides of the main body along the extension direction of the flow cavity; A throttling element, located within the flow cavity, is used to create a vortex in the fluid within the flow cavity; and A flow stabilizer is located inside the flow cavity and is disposed on the side of the throttling device near the outlet end, for uniformly distributing the fluid pressure within the flow cavity; The flow cavity includes a vortex chamber located between the throttling element and the flow stabilizing element.

2. The current stabilizing component according to claim 1, characterized in that, The throttling device includes a converging surface and a vortex hole communicating with the vortex chamber; the converging surface is located on the side of the throttling device near the inlet end, and the vortex hole is located at the center of the converging surface and is coaxially arranged with the flow chamber; In particular, the inner diameter of the converging surface gradually decreases in the direction from the inlet end to the outlet end.

3. The current stabilizing component according to claim 2, characterized in that, The throttling device also includes a diffuser surface located on the side of the throttling device facing the vortex chamber; In particular, the inner diameter of the diffuser surface gradually increases in the direction from the inlet end to the outlet end.

4. The current stabilizing component according to claim 1, characterized in that, The main body also includes a first housing near the inlet end and a second housing near the outlet end; the first housing and the second housing are detachably connected to each other.

5. The current stabilizing component according to claim 4, characterized in that, The throttling element is connected to the inner wall of the first housing and divides the flow cavity in the first housing into an inlet chamber and a connecting groove; one end of the second housing is inserted into the connecting groove and forms the vortex chamber.

6. The current stabilizing component according to claim 5, characterized in that, The current stabilizer protrudes from the end of the second housing; when the first housing is connected to the second housing, the current stabilizer is inserted into the connecting groove.

7. The current stabilizing component according to claim 6, characterized in that, The flow stabilizer includes a tapered surface, which is located at one end of the flow stabilizer facing the throttling element; In the direction from the inlet end to the outlet end, the outer diameter of the conical surface gradually increases.

8. The current stabilizing component according to claim 6, characterized in that, The flow stabilizer divides the flow cavity located in the second housing into an oral chamber; the flow stabilizer also includes a flow stabilizing hole, which is disposed on the radially peripheral side of the flow stabilizer; The flow stabilizing hole connects the vortex chamber and the outlet chamber.

9. The current stabilizing component according to claim 8, characterized in that, The number of flow stabilizing holes is multiple, and they are evenly distributed on the radial periphery of the flow stabilizing element.

10. The current stabilizing component according to claim 4, characterized in that, The first housing includes a snap-fit ​​portion disposed on the inner wall of the first housing and located at one end of the first housing facing the second housing; the second housing includes an annular snap-fit ​​groove disposed on the outer surface of the second housing and located at one end of the second housing facing the first housing. When the first housing and the second housing are connected, the snap-fit ​​part snaps into the snap-fit ​​groove.

11. The current stabilizing component according to claim 1, characterized in that, The flow stabilizing assembly also includes a seal, disposed at the inlet end and / or outlet end of the main body, and used to connect to the components of the screw pump.

12. A screw pump, characterized in that, The screw pump includes a suction chamber housing and a flow stabilizing assembly as described in any one of claims 1 to 11; wherein the suction chamber housing encloses a suction cavity, the inlet end of the flow stabilizing assembly is connected to the suction chamber housing, and the suction cavity communicates with the flow cavity.

13. The screw pump according to claim 12, characterized in that, The flow stabilizing assembly also includes a seal disposed at the inlet end, and the main body is sealed to the suction chamber housing through the seal.

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