Multi-stage pump with high sealing performance
By installing a housing and clamping components on the outside of the infusion pipeline of the multi-stage pump, a tight connection between the infusion pipeline and the suction port and discharge port is achieved, solving the problem of separation between the inlet and the pipeline and improving sealing performance and stability.
Patent Information
- Application Number
- CN202520536638.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-26
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-26
AI Technical Summary
The liquid inlet and liquid pipe of existing multistage pumps are prone to separation after docking, resulting in poor sealing and affecting normal use.
By setting multiple mounting shells on the outside of the infusion pipeline, and sliding connecting strip seats inside the mounting shells, the infusion pipeline is tightly connected to the suction port and discharge port using clamping components and transmission components, and the sealing performance is improved by combining sealing grooves and sealing rings.
It effectively improves the sealing performance between the infusion pipeline and the suction and discharge ports, reduces the probability of separation, and ensures the normal use and sealing performance of the multistage pump.
Smart Images
Figure CN223794355U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of multistage pump technology, specifically a multistage pump with high sealing performance. Background Technology
[0002] A multistage pump is a type of pump that increases fluid pressure and head by connecting multiple impellers in series. Compared to a single-stage pump, a multistage pump can utilize energy more effectively at the same flow rate and head, reducing energy consumption and operating costs. It features compact design, easy maintenance, energy efficiency, wide applicability, and high reliability. Therefore, it is widely used in industrial water supply, fire protection systems, reverse osmosis systems, petrochemicals, and other applications requiring high head and high pressure.
[0003] When using existing multistage pumps, most multistage pumps do not have a fixing mechanism for the liquid pipe at the liquid inlet. As a result, after the liquid inlet of the multistage pump is connected to the liquid pipe, the liquid is only prevented from flowing out by a sealing ring or sealing sleeve. This sealing method is generally ineffective. After the multistage pump has been working for a long time, the liquid inlet is likely to separate from the liquid pipe, which is not conducive to the normal use of the multistage pump. Utility Model Content
[0004] The purpose of this invention is to provide a multi-stage pump with high sealing performance to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage pump with high sealing performance, comprising:
[0006] A multi-stage pump body, wherein a suction port is provided at the bottom of one side of the multi-stage pump body and a discharge port is provided at the top of one side of the multi-stage pump body, and a delivery pipe is connected to one end of the suction port and one end of the discharge port.
[0007] Multiple mounting shells are evenly arranged on the outside of the infusion pipeline. Each mounting shell has a strip seat slidably connected inside. One end of the strip seat is provided with a clamping component to improve the overall sealing performance of the infusion pipeline.
[0008] An adjustment component is provided at one end of the mounting shell, and a receiving cavity is provided at the other end of the mounting shell. The receiving cavity is provided with a transmission component that allows the pressing component to slide back and forth along the length of the mounting shell. A guide component is provided on one side of the strip seat to keep the pressing component stable and smooth during sliding.
[0009] Preferably, the clamping assembly includes a wedge block fixed to one end of the strip seat, an annular seat fixedly connected to the outside of the infusion pipeline, a wedge groove corresponding to the wedge block being formed at one edge of the annular seat, the wedge block being located inside the wedge groove, a docking block being fixedly connected to one inclined surface of the wedge block, a docking groove corresponding to the docking block being formed on the inner wall of the wedge groove, and the docking block being located inside the docking groove.
[0010] Preferably, the adjustment assembly includes a limiting seat fixed to one end of the mounting shell, side support plates are provided on both sides of the limiting seat, the side support plates are fixedly installed on the outside of the multi-stage pump body, and a rotating shaft is fixedly installed inside the limiting seat, the rotating shaft being rotatably connected to the two end side support plates respectively.
[0011] Preferably, the transmission assembly includes a first transmission shaft disposed inside the receiving cavity, the first transmission shaft being rotatably connected to both sides of the inner wall of the receiving cavity, a worm gear being fixedly connected to the outer side of the first transmission shaft, a second transmission shaft being rotatably connected to one side of the inner wall of the receiving cavity, one end of the second transmission shaft extending through to the outside of the receiving cavity and having a rotating block fixedly installed thereon, and the other end of the second transmission shaft being fixedly connected to a worm, one end of the worm being rotatably connected to the inner wall of the receiving cavity, one side of the worm gear meshing with the worm, one side of the strip seat having a linkage tooth corresponding to the worm gear, and the other side of the worm gear meshing with the linkage tooth.
[0012] Preferably, sealing grooves are provided on the outer wall of one end of the infusion pipeline, the inner wall of the suction port, and the inner wall of the discharge port. A sealing ring is provided between adjacent sealing grooves, and the sealing rings are in contact with the inner walls of the sealing grooves on both sides.
[0013] Preferably, the guide assembly includes a slider fixed to one side of the inner wall of the mounting housing, and a groove corresponding to the slider is provided on one side of the strip seat, with the slider located inside the groove.
[0014] Preferably, a support base is fixedly connected to the bottom of the multi-stage pump body, and the support base is provided with mounting holes at the four corners for positioning and fixing the multi-stage pump body with fasteners.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This invention uses a transmission component to drive a strip seat to slide towards one end of the mounting shell, which, together with a clamping component, ensures a tight contact between the infusion pipeline and the suction and discharge ports, effectively improving the sealing performance between the infusion pipeline and the suction and discharge ports. A guide component allows the clamping component to slide smoothly and stably along the length of the mounting shell, thus improving the working stability of the clamping component. An adjustment component can move the wedge block away from the wedge groove, facilitating the disassembly and assembly of the infusion pipeline. Attached Figure Description
[0017] Figure 1 A schematic diagram of the structure of the high-sealing multistage pump provided by this utility model;
[0018] Figure 2 A schematic diagram of the specific structure of the infusion pipeline provided by this utility model;
[0019] Figure 3 A schematic diagram of the internal structure of the mounting shell provided by this utility model;
[0020] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle;
[0021] Figure 5 for Figure 3 Enlarged structural diagram at point B.
[0022] In the diagram: 1. Multistage pump body; 2. Suction port; 3. Discharge port; 4. Infusion pipeline; 5. Mounting housing; 6. Strip seat; 7. Clamping assembly; 71. Wedge block; 72. Wedge groove; 73. Connecting block; 74. Connecting groove; 75. Annular seat; 8. Guide assembly; 81. Slide groove; 82. Slider; 9. Receiving cavity; 10. Transmission assembly; 101. First transmission shaft; 102. Worm gear; 103. Second transmission shaft; 104. Worm; 105. Rotating block; 106. Linkage gear; 11. Adjustment assembly; 111. Limit seat; 112. Rotating shaft; 113. Side support plate; 12. Sealing groove; 13. Sealing ring; 14. Mounting hole; 15. Support base. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-5As shown, a high-sealing multistage pump includes a multistage pump body 1. A suction port 2 is located at the bottom of one side of the multistage pump body 1, and a discharge port 3 is located at the top of one side of the multistage pump body 1. Both the suction port 2 and the discharge port 3 are connected to a delivery pipe 4. By setting the suction port 2 and the discharge port 3, they can be used in conjunction with the delivery pipe 4 to transport liquids to different pipelines. It should be noted that the multistage pump body 1 in this invention is a common vertical multistage centrifugal pump, which achieves work and energy transfer on the liquid based on an impeller. Multiple mounting shells 5 are evenly arranged on the outside of the delivery pipe 4. Each mounting shell 5 has a slidably connected strip seat 6 inside. One end of the strip seat 6 is provided with a clamping component 7 to improve the overall sealing performance of the delivery pipe 4. By setting the clamping component 7, the delivery pipe 4 can be moved to the suction port. 2. The drain port 3 is tightly connected, which reduces the probability of the infusion pipeline 4 separating from the suction port 2 and the drain port 3, and effectively improves the sealing performance between the infusion pipeline 4 and the suction port 2 and the drain port 3; the adjusting component 11 is set at one end of the mounting shell 5, and the other end of the mounting shell 5 is provided with a receiving cavity 9. The receiving cavity 9 is provided with a transmission component 10 that allows the pressing component 7 to slide back and forth along the length of the mounting shell 5. By setting the transmission component 10, after the infusion pipeline 4 is connected with the suction port 2 and the drain port 3, it can cooperate with the strip seat 6 to achieve a tight connection between the infusion pipeline 4 and the suction port 2 and the drain port 3; one side of the strip seat 6 is provided with a guide component 8 that can keep the pressing component 7 stable and smooth when sliding. By setting the guide component 8, the stability of the strip seat 6 and the pressing component 7 at one end can be improved.
[0025] The clamping assembly 7 includes a wedge block 71 fixed to one end of the strip seat 6. An annular seat 75 is fixedly connected to the outside of the infusion tubing 4. A wedge groove 72 corresponding to the wedge block 71 is formed on one edge of the annular seat 75. The wedge block 71 is located inside the wedge groove 72. A mating block 73 is fixedly connected to one inclined surface of the wedge block 71. A mating groove 74 corresponding to the mating block 73 is formed on the inner wall of the wedge groove 72. The mating block 73 is located inside the mating groove 74. Figure 2 , Figure 3 and Figure 4 As shown, by inserting the wedge block 71 at one end of the strip seat 6 into the wedge groove 72 on the outside of the annular seat 75, the connection between the infusion pipeline 4 and the suction port 2 and the discharge port 3 can be completed. This keeps the infusion pipeline 4 in close contact with the suction port 2 and the discharge port 3, thereby reducing the probability of the infusion pipeline 4 separating from the suction port 2 and the discharge port 3. Furthermore, the docking groove 74 and the docking block 73 can limit the overall swing of the strip seat 6, preventing the clamping assembly 7 from moving away from the infusion pipeline 4 and causing docking failure.
[0026] The adjusting assembly 11 includes a limiting seat 111 fixed to one end of the mounting housing 5. Side support plates 113 are provided on both sides of the limiting seat 111. The side support plates 113 are fixedly installed on the outside of the multi-stage pump body 1. A rotating shaft 112 is fixedly installed inside the limiting seat 111. The rotating shaft 112 is rotatably connected to the side support plates 113 at both ends. Figure 1 , Figure 3 As shown, the strip seat 6 and its one-end clamping assembly 7 can swing with the internal rotating shaft 112 of the limiting seat 111 as the center. In actual use, the swinging mounting shell 5 can drive the wedge block 71 to be inserted into the wedge groove 72 to complete the docking between the infusion pipeline 4 and the suction port 2 and the discharge port 3. It can also drive the wedge block 71 away from the wedge groove 72 to facilitate the disassembly of the infusion pipeline 4 from the suction port 2 and the discharge port 3. This is beneficial to the disassembly and assembly of the infusion pipeline 4.
[0027] The transmission assembly 10 includes a first transmission shaft 101 disposed inside the receiving cavity 9. The first transmission shaft 101 is rotatably connected to both sides of the inner wall of the receiving cavity 9. A worm gear 102 is fixedly connected to the outer side of the first transmission shaft 101. A second transmission shaft 103 is rotatably connected to one side of the inner wall of the receiving cavity 9. One end of the second transmission shaft 103 extends to the outside of the receiving cavity 9 and a rotating block 105 is fixedly installed thereon. The other end of the second transmission shaft 103 is fixedly connected to a worm 104. One end of the worm 104 is rotatably connected to the inner wall of the receiving cavity 9. One side of the worm gear 102 meshes with the worm 104. One side of the strip seat 6 is provided with a linkage tooth 106 corresponding to the worm gear 102, and the other side of the worm gear 102 meshes with the linkage tooth 106. Figure 2 , Figure 3 and Figure 5 As shown, when the infusion pipeline 4 is connected to the suction port 2 and the discharge port 3, the rotating block 105 and the second drive shaft 103 can be used to drive the worm gear 104 to rotate. The worm gear 104 then drives the strip seat 6 to slide towards one end of the mounting shell 5 through the worm wheel 102 and the linkage gear 106 until each wedge block 71 is inserted into the corresponding wedge groove 72. At this time, the infusion pipeline 4 and the suction port 2 and the discharge port 3 are in close contact, which effectively improves the sealing performance between the infusion pipeline 4 and the suction port 2 and the discharge port 3.
[0028] Sealing grooves 12 are provided on the outer wall of one end of the infusion pipeline 4, the inner wall of one end of the suction port 2, and the inner wall of one end of the discharge port 3. Sealing rings 13 are provided between adjacent sealing grooves 12, and the sealing rings 13 contact the inner walls of the sealing grooves 12 on both sides. Figure 2 , Figure 3 As shown, by setting the sealing groove 12 and sealing ring 13, and cooperating with the clamping assembly 7, the sealing performance between the infusion pipeline 4 and the suction port 2 and the discharge port 3 can be further improved.
[0029] The guide assembly 8 includes a slider 82 fixed to one side of the inner wall of the mounting housing 5. A groove 81 corresponding to the slider 82 is provided on one side of the strip seat 6, and the slider 82 is located inside the groove 81. Figure 3 , Figure 5 As shown, by setting the slide groove 81 and the slider 82, the clamping assembly 7 can maintain stability and smoothness when sliding back and forth along the length of the mounting shell 5, thus improving the working stability of the clamping assembly 7.
[0030] A support base 15 is fixedly connected to the bottom of the multistage pump body 1. The support base 15 has mounting holes 14 at each of its four corners for positioning and fixing the multistage pump body 1 with fasteners. Figure 2 As shown, by setting the mounting hole 14 and using bolts and other fasteners, the multi-stage pump body 1 can be quickly positioned and fixed.
[0031] Working principle: First, the operator uses the mounting hole 14 to install and fix the utility model in a suitable working position. Then, the infusion pipe 4 is inserted into the suction port 2 and the discharge port 3, thus completing the initial connection between the infusion pipe 4 and the suction port 2 and the discharge port 3. Then, the transmission component 10 drives the strip seat 6 to slide towards one end of the mounting shell 5. With the cooperation of the clamping component 7, the infusion pipe 4 and the suction port 2 and the discharge port 3 are kept in tight contact, which effectively improves the sealing performance between the infusion pipe 4 and the suction port 2 and the discharge port 3. In this process, the guide component 8 can make the clamping component 7 slide back and forth along the length of the mounting shell 5 in a stable and smooth manner, thus improving the working stability of the clamping component 7. When it is necessary to disassemble the infusion pipe 4, the wedge block 71 can be moved away from the wedge groove 72 by adjusting the component 11. At this time, the infusion pipe 4 is no longer restricted and can be disassembled freely, which is conducive to the disassembly and assembly of the infusion pipe 4.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-stage pump with high sealing performance, characterized in that, include: A multistage pump body (1) is provided with a suction port (2) at the bottom of one side and a discharge port (3) at the top of one side. Both the suction port (2) and the discharge port (3) are connected to a delivery pipe (4). Multiple mounting shells (5) are evenly arranged on the outside of the infusion pipeline (4). Each mounting shell (5) is slidably connected with a strip seat (6). One end of the strip seat (6) is provided with a clamping component (7) for improving the overall sealing performance of the infusion pipeline (4). An adjustment component (11) is provided at one end of the mounting shell (5), and a receiving cavity (9) is provided at the other end of the mounting shell (5). A transmission component (10) is provided inside the receiving cavity (9) to allow the pressing component (7) to slide back and forth along the length of the mounting shell (5). A guide component (8) is provided on one side of the strip seat (6) to keep the pressing component (7) stable and smooth when it slides.
2. The high-sealing multistage pump according to claim 1, characterized in that: The clamping assembly (7) includes a wedge block (71) fixed to one end of the strip seat (6), an annular seat (75) fixedly connected to the outside of the infusion pipe (4), a wedge groove (72) corresponding to the wedge block (71) is opened on one side edge of the annular seat (75), the wedge block (71) is located inside the wedge groove (72), a docking block (73) is fixedly connected to one side inclined surface of the wedge block (71), a docking groove (74) corresponding to the docking block (73) is opened on the inner wall of the wedge groove (72), and the docking block (73) is located inside the docking groove (74).
3. A high-sealing multistage pump according to claim 1, characterized in that: The adjustment assembly (11) includes a limiting seat (111) fixed to one end of the mounting shell (5). The limiting seat (111) has side support plates (113) on both sides. The side support plates (113) are fixedly installed on the outside of the multi-stage pump body (1). A rotating shaft (112) is fixedly installed inside the limiting seat (111). The rotating shaft (112) is rotatably connected to the two side support plates (113) respectively.
4. A high-sealing multistage pump according to claim 1, characterized in that: The transmission assembly (10) includes a first transmission shaft (101) disposed inside the receiving cavity (9). The first transmission shaft (101) is rotatably connected to both sides of the inner wall of the receiving cavity (9). A worm gear (102) is fixedly connected to the outer side of the first transmission shaft (101). A second transmission shaft (103) is rotatably connected to one side of the inner wall of the receiving cavity (9). One end of the second transmission shaft (103) extends through to the outside of the receiving cavity (9) and a rotating block (105) is fixedly installed thereon. The other end of the second transmission shaft (103) is fixedly connected to a worm (104). One end of the worm (104) is rotatably connected to the inner wall of the receiving cavity (9). One side of the worm gear (102) meshes with the worm (104). One side of the strip seat (6) is provided with a linkage tooth (106) corresponding to the worm gear (102). The other side of the worm gear (102) meshes with the linkage tooth (106).
5. A high-sealing multistage pump according to claim 1, characterized in that: Sealing grooves (12) are provided on the outer wall of one end of the infusion pipe (4), the inner wall of one end of the suction port (2), and the inner wall of one end of the discharge port (3). A sealing ring (13) is provided between adjacent sealing grooves (12), and the sealing ring (13) is in contact with the inner wall of the sealing grooves (12) on both sides respectively.
6. A high-sealing multistage pump according to claim 1, characterized in that: The guide assembly (8) includes a slider (82) fixed to one side of the inner wall of the mounting housing (5), and a groove (81) corresponding to the slider (82) is provided on one side of the strip seat (6), with the slider (82) located inside the groove (81).
7. A high-sealing multistage pump according to claim 1, characterized in that: The bottom of the multistage pump body (1) is fixedly connected to a support base (15), and the four corners of the support base (15) are provided with mounting holes (14) for positioning and fixing the multistage pump body (1) with fasteners.