A detachable live ring pump head with magnetic segmented plunger rod

Abstract

The present invention discloses a detachable live-ring pump head of a magnetically attracted segmented plunger rod, and relates to the technical field of plunger pumps, and is used to overcome the problems of low energy efficiency utilization rate of plunger pumps, poor repeatability of fluid delivery conditions, and destruction of fluid delivery state by interchangeable plunger friction pairs. The present invention mainly reduces the design redundancy of pump body strength and power, and reduces the energy consumption of fluid delivery by arranging a pump body, a pump head body, a first plunger rod, a second plunger rod, and a magnetic suction block; improves the identity of the shape of the conveyed fluid remaining in the pump head, and reduces the fluctuation amplitude of the flow state of the conveyed fluid when the specification is changed. By arranging a pump body, a pump head body, a live-ring rod, a clamping piece, a guide groove, a live-ring groove, and a guide slider, the docking stability of the segmented plunger rod is improved, the risk of internal dislocation and power transmission disconnection of the interchangeable pump head is reduced, the ease of operation of interchangeable pump heads is improved, and the convenience of state monitoring of interchangeable pump heads is improved.

Description

Technical Field

[0001] The invention relates to the technical field of plunger pumps, and in particular to a detachable live-ring pump head of a magnetically attracted segmented plunger rod. Background Art

[0002] The plunger pump is a conventional liquid variable displacement mechanical pump. The plunger rod moves to drive the change of the liquid volume in the plunger cavity, causing the change of the internal and external pressure difference, and absorbs and discharges the liquid to achieve the purpose of transmitting the fluid. In conventional plunger pumps, the plunger rod is fixedly connected to the plunger and cannot be removed as a whole with the pump head. For industries such as health and medicine with high disinfection requirements, thorough disinfection is required when the equipment is shut down or the conveying material is changed. The plunger rod cannot be removed with the pump head, making disinfection difficult.

[0003] The pump body centrally and fixedly installs the plunger rod and sealing components inside the pump body, and the power part drives the plunger rod to reciprocate, thereby absorbing and discharging the transmitted fluid in the integrated fixed pump head structure. In the existing conventional plunger pump structure, when the physical and chemical properties of the fluid transmitted by the plunger pump change with the change of transmission conditions, the integrated plunger pump usually relies on manual removal of the pump head structure fixed to the pump body to maintain the internal mechanisms such as the plunger reciprocating motion mechanism, the volume-variable cavity parts, the sealing components and the distribution structure; in addition, during the exchange process of the plunger and the pump head body, such as disassembly, maintenance, etc., the influence of the change in the accuracy of the plunger friction pair on the flow state of the conveyed fluid is difficult to effectively control, resulting in poor reproducibility of the fluid delivery conditions, which is not conducive to high-precision fluid delivery.

[0004] In the prior art, for example, the U.S. invention patent US8317493B2 discloses a high-precision metering delivery pump, which reduces the contamination retention at the contact position of the plunger during fluid delivery by adjusting the distribution system, switching multiple flow channels, and controlling the speed, and adjusts the flow characteristics to meet the delivery accuracy requirements by controlling the flow rate; in this invention patent, the matching area of ​​the plunger friction pair can be adjusted by a split plunger combination structure, and the plunger structure is adjustably assembled in one by a threaded connection; in this invention patent, when the working area of ​​the plunger pair is adjusted, the cylindrical surface of the plunger pair oil film may be damaged by a non-axial torque, and the adjustment of the flow characteristics of the delivered fluid may not be complete. In addition, in this technical solution, there may be a situation where the residual delivered fluid cannot be completely removed, and it is difficult to adapt to the high-precision fluid delivery requirements. Summary of the invention

[0005] The purpose of the present invention is to provide a detachable movable ring pump head with a magnetic segmented plunger rod, so as to overcome the shortcomings of the prior art such as low energy efficiency utilization rate of plunger pumps, poor repeatability of fluid delivery conditions, and destruction of fluid delivery conditions due to interchangeable plunger friction pairs.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A detachable live-ring pump head with a magnetic segmented plunger rod, comprising a pump body and a pump head body, a working chamber is provided in the pump head body, a plunger mechanism is provided in the working chamber, a power channel is provided in the pump body, the power channel accommodates the axial reciprocating motion of the plunger mechanism, the pump body and the pump head body are connected by surface contact, a fastening mechanism is provided on the pump body, a working chamber is provided in the pump head body, the plunger mechanism comprises a first plunger rod and a second plunger rod, opposite ends of the first plunger rod and the second plunger rod are fixedly connected with magnetic suction blocks, the first plunger rod is slidably connected in the working chamber, and the second plunger rod is located in the power channel;

[0008] By arranging the pump body, the pump head body, the first plunger rod, the second plunger rod and the magnetic suction block, the risk of overload damage and insufficient power of the fluid conveying system pipeline is reduced, the flexibility of the power and conveying specification allocation combination of the fluid conveying system is improved, the utilization rate of the pump body and the power component is improved, the design redundancy of the pump body strength and power is reduced, and the energy consumption of fluid conveying is reduced;

[0009] The risk of sudden changes in the critical state of the fluid is reduced, the convenience of regulating the delivery specifications and flow characteristics of the fluid delivery system is improved, the uniformity of the shape of the delivery fluid remaining in the pump head is improved, the need for cleaning the pump head of the fluid delivery system is reduced, and the possibility of leakage of the delivery fluid in the delivery system is reduced; the damage to the plunger pair by the bending and torsional moment is reduced, the fluctuation amplitude of the flow state of the delivery fluid when the specification is changed is reduced, the risk of delivery blockage is reduced, the stability of the oil film characteristics of the plunger pair of the pump head interchangeable parts is improved, and the risk of sudden changes in the volumetric efficiency of the interchangeable pump heads is reduced.

[0010] Preferably, the fastening mechanism comprises a movable ring rod arranged on the pump body, and a clamping assembly is provided at the other end of the movable ring rod, and the clamping assembly fixes the relative positions of the pump body and the pump head body.

[0011] Preferably, a movable ring rod is hinged on the pump body, the clamping assembly includes a clamping piece, the other end of the movable ring rod is threadedly connected to the clamping piece, and the clamping piece clamps and fixes the pump head body.

[0012] Preferably, a track channel is provided on the mating surface of the pump body, the track channel is interconnected with the power channel, and the track channel provides a disassembly and assembly operation space for the first plunger rod to dock with the second plunger rod.

[0013] Preferably, a guide slider is provided on the pump head body, a guide groove is provided on the pump body, the guide slider is slidably connected in the guide groove, and the guide groove guides the movement of the first plunger rod in the track channel during assembly and disassembly;

[0014] By providing guide grooves, guide sliders, pump bodies and pump head bodies, the collision and wear during assembly and disassembly of interchangeable pump heads are reduced, the accuracy of positioning and movement during the interchangeable docking process of segmented plunger rods is improved, and the matching accuracy of interchangeable assembly and disassembly of detachable pump heads is improved; the ease of interchangeable operation of segmented plunger rods and detachable pump heads is improved, and the interchangeable service life and safety of detachable pump heads are improved.

[0015] Preferably, the guiding direction of the guide groove is in the radial direction of the power channel.

[0016] Preferably, a gap is left between the side wall of the power channel and the first plunger rod.

[0017] Preferably, a movable ring groove is provided on the pump head body, the movable ring groove provides an accommodation space for the movable ring rod, the movable ring rod limits the radial movement range of the pump head body relative to the pump body, the guide groove limits the radial movement range of the guide slider relative to the pump body, and the guide groove and the movable ring rod are used for docking and positioning between the first plunger rod and the second plunger rod;

[0018] By arranging the pump body, pump head body, movable ring rod, clamping piece, guide groove, movable ring groove and guide slide block, the docking stability of the segmented plunger rod is improved, the risk of internal misalignment and power transmission disconnection of interchangeable pump heads is reduced, the disassembly and assembly speed and stability of interchangeable pump head parts are improved, the ease of operation of interchangeable pump heads is improved, and the convenience of status monitoring of interchangeable pump heads is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the assembly relationship between the pump body and the pump head body;

[0021] Figure 2 yes Figure 1 A schematic diagram of the main view;

[0022] Figure 3 yes Figure 1 Schematic diagram of top view;

[0023] Figure 4 yes Figure 2 A local enlarged schematic diagram of the middle A;

[0024] Figure 5 It is a schematic diagram of the structure of the pump head body;

[0025] Figure 6 yes Figure 5 A side view schematic diagram of

[0026] Figure 7 It is a schematic diagram of the connection relationship between the plunger cavity and the plunger mechanism;

[0027] Figure 8 It is a schematic diagram of the structure of the pump body;

[0028] Fig. 9 yes Figure 8 A top view schematic diagram of

[0029] Fig.10 yes Figure 8 Schematic cross-sectional view at CC in the middle;

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the pump body;

[0031] Fig.12 is a schematic diagram of the assembly relationship between the first plunger rod and the second plunger rod;

[0032] Fig.13 yes Fig.12 A schematic cross-sectional view at NN in the middle;

[0033] Fig.14 It is a schematic diagram of the assembly between the first plunger rod and the magnetic suction block.

[0034] Figure numbers: pump body 10; power channel 11; trajectory channel 12; guide groove 13; hinge groove 14; leak detection hole 15; hinge column hole 16; hinge column 17; live ring rod 18; pressing piece 19; pump head body 40; variable volume cavity 41; plunger cavity 42; live ring groove 43; guide slider 44; distribution hole 45; plunger mechanism 60; first plunger rod 61; magnetic suction block 63; second plunger rod 64. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0036] The specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "arranged on" another element, it can be directly on another element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to another element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0038] Embodiment 1

[0039] Refer to the attached Figure 1 To Attachment Fig.14 As shown, the present invention provides a detachable live-ring pump head with a magnetic segmented plunger rod, comprising a pump body 10 and a pump head body 40, wherein a working chamber is provided in the pump head body 40, a plunger mechanism 60 is provided in the working chamber, a power channel 11 and a power member are provided in the pump body 10, the power channel 11 accommodates the axial reciprocating motion of the plunger mechanism 60, and the power member is dynamically connected to the plunger mechanism 60;

[0040] The positions of the left end surface of the pump body 10 and the right end surface of the pump head body 40 correspond to each other, the pump body 10 and the pump head body 40 are connected by surface contact, the pump body 10 and the pump head body 40 are positioned and matched in an end-to-end butt manner, a fastening mechanism is provided on the pump body 10, the fastening mechanism is used to compress the contact and matching surface between the pump body 10 and the pump head body 40, a working chamber is provided in the pump head body 40, the plunger mechanism 60 has a first plunger rod 61 and a second plunger rod 64, the opposite ends of the first plunger rod 61 and the second plunger rod 64 are fixedly connected with a magnetic suction block 63, the magnetic suction block 63 transmits the axial movement between the first plunger rod 61 and the second plunger rod 64, the first plunger rod 61 is slidably connected in the working chamber, the second plunger rod 64 is located in the power channel 11, and the power piece is dynamically connected to the second plunger rod 64;

[0041] A variable volume chamber 41 is provided in the pump head body 40, and fluid input and output channels are provided in the side walls of the variable volume chamber 41. The fluid input and output channels flow in and out of the conveyed fluid through the pipelines provided on the distribution hole 45. A plunger chamber 42 is provided at the right end of the variable volume chamber 41. The plunger chamber 42 is communicated with the variable volume chamber 41, and the right end of the plunger chamber 42 is slidably connected to the first plunger rod 61. A power assembly is provided in the pump body 10, and the power assembly drives the plunger mechanism 60 to slide left and right in the plunger chamber 42, thereby driving the pressure in the variable volume chamber 41 to increase and decrease to complete the suction and discharge actions of the conveyed fluid.

[0042] By setting a surface contact fitting connection between the pump body 10 and the pump head body 40, and transmitting the axial movement of the fluid transmission between the first plunger rod 61 and the second plunger rod 64 through the magnetic suction block 63, the first plunger rod 61 can be driven by the pump head body 40 to dock with the second plunger rod 64 installed on the pump body 10 under the surface contact fixation between the pump body 10 and the pump head body 40, and the first plunger rod 61 and the second plunger rod 64 transmit axial power through the magnetic suction block 63. By setting the magnetic suction block 63, the plunger rod is segmented into the first plunger rod 61 and the second plunger rod 64.

[0043] The pump body 10 and the pump head body 40 can be detachably assembled and disassembled into a plunger pump as a whole and pump head bodies 40 of different specifications can be switched to be used with the pump body 10. Pump heads of different delivery specifications can be switched on the same pump body power assembly, thereby switching different fluid delivery conditions and delivery specifications. The same pump body power assembly is used to provide reciprocating power for switching different pump heads, which can reduce the material cost of switching the specifications of the fluid delivery pump head. At the same time, the pump body and the power assembly as a whole are used as basic components, and the pump head is used as an interchangeable part for disassembly and assembly;

[0044] By providing the pump body 10, the pump head body 40, the first plunger rod 61, the second plunger rod 64 and the magnetic suction block 63, the delivery specifications, power distribution and adaptation effects of the fluid delivery switching are improved, the risks of overload damage and insufficient power of the fluid delivery system pipeline are reduced, the adaptability of the fluid delivery system to changes in fluid parameters is improved, the flexibility of the power and delivery specification distribution combination of the fluid delivery system is improved, the safety and delivery efficiency of the fluid delivery system are improved, the utilization rate of the pump body and power components is improved, the design redundancy of the pump body strength and power is reduced, and the energy consumption of fluid delivery is reduced; the layout and control accuracy of the variable specification delivery fluid system is improved, and the convenience of the layout, maintenance, expansion and upgrade of the fluid delivery system is improved;

[0045] Improve the interchangeability of pump body parts, improve the process performance and material management quality of pump body disassembly and assembly interchangeable parts, reduce the modification cost of the existing conveying system, reduce the impact on the assembly accuracy of the pump head interchangeable parts during the disassembly and assembly interchangeable process, stabilize the ability of the pump head interchangeable parts to reproduce the fluid conveying specifications during the fluid conveying process, reduce the impact of the flow state of the conveyed fluid on the change of the conveying specifications, can switch multiple fluids on the same pump body and power assembly for conveying, and the same or similar fluids can be switched on the pump head interchangeable parts of the allowable conveying specifications on the pump body and power assembly with the same conveying power, reduce the impact of the flow state of the conveyed fluid on the switching of the conveying specifications, stabilize the stability of the conveying fluid's own state, reduce the risk of the fluid producing a critical state mutation, improve the convenience of regulating the conveying specifications and flow characteristics of the fluid conveying system, improve the identity of the conveying fluid shape remaining in the pump head, reduce the need for cleaning and disinfection of the fluid conveying system pump head, reduce the possibility of leakage of the conveying fluid in the conveying system, and improve the convenience of regulating the conveying of special fluids;

[0046] In addition, by setting the magnetic suction block 63 to transmit the axial power between the first plunger rod 61 and the second plunger rod 64, the rigid transmission between the power transmission of the two sections of the plunger rod, the first plunger rod 61 and the second plunger rod 64 can be interrupted, and the reciprocating motion provided by the power transmission component of the second plunger rod 64 can be decomposed into axial motion, thereby preventing the second plunger rod 64 from transmitting the bending and torsional moment to the first plunger rod 61, reducing the workload of the plunger pair of the pump head interchangeable parts, reducing the damage of the plunger pair to the bending and torsional moment, improving the reproducibility of the delivery accuracy of the pump head interchangeable parts, improving the delivery specification control accuracy of the switching layout fluid delivery, reducing the fluctuation amplitude of the flow state of the specification-changing delivery fluid, reducing the probability of solid phase precipitation due to critical changes in the multi-phase mixed delivery fluid, reducing the risk of delivery blockage, and improving the stability of the oil film characteristics of the plunger pair of the pump head interchangeable parts. The delivery of gas-soluble fluids can reduce the change in the amount of gas phase solubility, reduce the possibility of cavitation in the fluid delivery system, and at the same time reduce the risk of sudden changes in the volumetric efficiency of the interchangeable pump heads, and improve the service life and delivery safety of the delivery system;

[0047] In addition, the magnetic suction block 63 may be a magnetic material or a magnetic suction structure having suction force, and the magnetic suction block 63 may be a magnetic material or a magnetic suction structure that actively stimulates suction force;

[0048] A plurality of power channels 11 can be provided in the pump body 10 to set a plurality of second plunger rods 64. At the same time, a plurality of plunger cavities 42 corresponding to the positions of the power channels 11 can be provided in the pump head body 40 to set a plurality of first plunger rods 61. A plurality of trajectory channels 12 are synchronously provided to connect a plurality of plunger rod segments, so that a plurality of plunger assemblies can be synchronously connected and interchanged on the same pump head and pump body as a whole, thereby realizing the regulation and formation of more plunger conveying conditions in the pump head interchangeable structure.

[0049] Refer to the attached Figure 7 and attached Fig.10 As shown, a guide slider 44 is fixedly connected to the right end surface of the pump head body 40, and a guide groove 13 is provided on the left end surface of the pump body 10. The guide groove 13 cooperates with the guide slider 44, and the guide groove 13 guides the movement of the first plunger rod 61 in the track channel 12 when disassembling and assembling; when the plunger mechanism 60 is docked and installed between the pump body 10 and the pump head body 40, the pump body 10 slides in the radial direction of the plunger mechanism 60 through the guide groove 13 to guide the guide slider 44 and the pump head body 40 to slide toward the power channel 11, and the guide slider 44 is guided by the guide groove 13 to slide downward in the guide groove 13, thereby driving the pump head body 40 and the plunger mechanism 60 to stop as a whole at the docking position at the left end of the power channel 11;

[0050] By providing the guide groove 13, the guide slider 44, the pump body 10 and the pump head body 40, the sliding state of the guide slider 44 can be stabilized under the guiding action of the guide groove 13, thereby reducing the collision and wear during disassembly and assembly, reducing the surface damage of the contact mating surface between the pump body 10 and the pump head body 40, improving the accuracy of positioning and movement during the interchangeable docking process of the segmented plunger rod, and improving the matching accuracy of the interchangeable and disassembled assembly of the detachable pump head; improving the simplicity of the interchangeable operation of the segmented plunger rod and the detachable pump head, and improving the interchangeable service life and safety of the detachable pump head.

[0051] The left end surface of the pump body 10 is provided with a track channel 12. When the plunger mechanism 60 follows the pump head body 40 to dock in the power channel 11 in the vertical direction of the radial direction of the power channel 11, the track channel 12 accommodates the docking motion track of the plunger mechanism 60 at the left end of the pump body 10; the track channel 12 is connected with the power channel 11, and the track channel 12 provides a disassembly and assembly operation space for the first plunger rod 61 to dock with the second plunger rod 64;

[0052] When the guide slider 44 slides downward in the guide groove 13 relative to the pump body 10 to the maximum guide sliding position of the guide groove 13, the plunger mechanism 60 completes the docking between the plunger cavity 42 and the power channel 11;

[0053] Refer to the attached Figures 1 to 4 , Attachment Figure 6 , Attachment Figure 7 And attached Fig.10 As shown, a hinge groove 14 is provided on the side of the pump body 10, and a hinge column 17 is rotatably connected between the two side walls of the hinge groove 14. A hinge column hole 16 is provided on the pump body 10, and the hinge column 17 is arranged in the hinge groove 14 through the hinge column hole 16. One end of the hinge column 17 located in the hinge groove 14 is rotatably connected to a live ring rod 18, and the other end of the live ring rod 18 is rotatably connected to a pressing piece 19 through a threaded rotation. The pump head body 40 is located between the pressing piece 19 and the pump body 10, and the live ring rod 18 is hinged to the pump body 10 through the hinge column 17;

[0054] The fastening mechanism includes a movable ring rod 18 disposed on the pump body 10, and a clamping assembly is provided at the other end of the movable ring rod 18, and the clamping assembly fixes the relative position of the pump body 10 and the pump head body 40; the clamping assembly includes a clamping piece 19 threadedly connected to the other end of the movable ring rod 18, and the clamping piece 19 clamps and fixes the pump head body 40;

[0055] Refer to the attached Figure 1 To Attachment Figure 4 , Attachment Fig.10 To Attachment Fig.14 As shown, a live ring groove 43 is provided on the pump head body 40, and the live ring groove 43 provides a space for accommodating the live ring rod 18. The live ring rod 18 limits the radial movement range of the pump head body 40 relative to the pump body 10, and the guide groove 13 limits the radial movement range of the guide slider 44 relative to the pump body 10. The guide groove 13 and the live ring rod 18 are used for docking and positioning between the first plunger rod 61 and the second plunger rod 64. The axis of the first plunger rod 61 is located within the docking end surface range of the second plunger rod 64;

[0056] The free rotation plane of the movable ring rod 18 hinged on the pump body 10 is perpendicular to the left end face of the pump body 10 and the right end face of the pump head body 40. After the movable ring rod 18 is hinged and rotated around the hinge column 17 toward the pump head body 40, the movable ring rod 18 is accommodated in the movable ring groove 43. The length of the movable ring rod 18 in the axial direction of the plunger mechanism 60 is greater than the movable ring groove 43; the pressing piece 19 threadedly connected to the left end of the movable ring rod 18 moves to the right after forward rotation, thereby providing a rightward extrusion force on the pump head body 40, thereby increasing the left end face of the pump body 10 and the right end face of the pump head body 40. The friction between them and the extrusion force provided by the clamping piece 19 maintains a stable fit between the right end face of the pump head body 40 and the left end face of the pump body 10; when the clamping piece 19 is reversed on the movable ring rod 18, the clamping piece 19 moves on the movable ring rod 18 in a direction relatively away from the hinge column 17, thereby releasing the extrusion force on the pump head body 40, and after the movable ring rod 18 is rotated on the hinge column 17 in the opposite direction away from the pump head body 40, the movable ring rod 18 is disengaged from the accommodation of the movable ring groove 43, thereby releasing the freedom of the pump head body 40 to slide on the left end face of the pump body 10.

[0057] By setting the pump body 10, the pump head body 40, the ring rod 18, the clamping piece 19, the guide groove 13, the ring groove 43 and the guide slider 44, the pump head body 40 slides in the guide groove 13 to adjust the position on the contact matching surface relative to the pump body 10 through the guide slider 44, and the pump head body 40 drives the first plunger rod 61 to move in the track channel 12 into the power channel 11 to dock with the second plunger rod 64. After the first plunger rod 61 and the second plunger rod 64 are docked, the clamping piece 19 presses the surface contact connection between the pump head body 40 and the pump body 10, and under the accommodation effect of the ring groove 43 on the ring rod 18, the pump head is limited. The pump head body 40 slides on the matching surface relative to the pump body 10, thereby limiting the sliding position of the pump head body 40 on the end surface of the pump body 10, so that after the surface matching of the pump head body 40 and the pump body 10 is completed, the matching range of the first plunger rod 61 and the second plunger rod 64 is limited, thereby ensuring that the sliding of the pump head body 40 on the matching surface of the pump body 10 does not affect the axial matching of the first plunger rod 61 and the second plunger rod 64, improving the matching stability of the segmented plunger rods, reducing the risk of internal misalignment and power transmission disconnection of the interchangeable pump head, improving the disassembly and assembly speed and stability of the interchangeable parts of the pump head, and improving the ease of operation of the interchangeable use of the pump head;

[0058] At the same time, the internal power docking condition can be judged according to the relative state between the movable ring rod 18, the clamping piece 19 and the pump head body 40, and the leakage condition of the volume-variable cavity can be checked by connecting the leak detection hole 15 provided on the pump head body 40. The working state of the interchangeable pump head can be grasped in time without disassembly, thereby improving the convenience of status monitoring of the interchangeable pump head.

[0059] The above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes made by a person skilled in the art without departing from the concept and principle of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A detachable live-ring pump head with a magnetic segmented plunger rod, comprising a pump body (10) and a pump head body (40), wherein a working chamber is provided in the pump head body (40), a plunger mechanism (60) is provided in the working chamber, a power channel (11) is provided in the pump body (10), and the power channel (11) accommodates the axial reciprocating motion of the plunger mechanism (60), characterized in that: The pump body (10) and the pump head body (40) are connected by surface contact, the pump body (10) is provided with a fastening mechanism, the pump head body (40) is provided with a working chamber, the plunger mechanism (60) comprises a first plunger rod (61) and a second plunger rod (64), the first plunger rod (61) and the second plunger rod (64) are fixedly connected to magnetic suction blocks (63) at opposite ends, the first plunger rod (61) is slidably connected in the working chamber, and the second plunger rod (64) is located in the power channel (11); The magnetic suction block (63) transmits axial movement between the first plunger rod (61) and the second plunger rod (64); A track channel (12) is provided on the mating surface of the pump body (10), and the track channel (12) is communicated with the power channel (11); The fastening mechanism comprises a movable ring rod (18) arranged on the pump body (10), the other end of the movable ring rod (18) being provided with a clamping assembly, the clamping assembly fixing the relative position of the pump body (10) and the pump head body (40); The track channel (12) provides a disassembly and assembly operation space for the first plunger rod (61) to dock with the second plunger rod (64).

2. A detachable live ring pump head with a magnetic segmented plunger rod as claimed in claim 1, characterized in that: A movable ring rod (18) is hinged on the pump body (10), and the clamping assembly comprises a clamping piece (19). The other end of the movable ring rod (18) is threadedly connected to the clamping piece (19), and the clamping piece (19) clamps and fixes the pump head body (40).

3. A detachable live ring pump head with a magnetic segmented plunger rod as claimed in claim 1, characterized in that: The pump head body (40) is provided with a guide slider (44), and the pump body (10) is provided with a guide groove (13), the guide slider (44) is slidably connected in the guide groove (13), and the guide groove (13) guides the movement of the first plunger rod (61) in the track channel (12) during assembly and disassembly; A variable volume chamber (41) is provided in the pump head body (40), and fluid input and output channels are provided in the side wall of the variable volume chamber (41), and the fluid to be transported flows in and out of the fluid input and output channels through a pipeline provided on the distribution hole (45). A plunger chamber (42) is provided at the right end of the variable volume chamber (41), and the plunger chamber (42) and the variable volume chamber (41) are communicated with each other. The right end of the plunger chamber (42) is slidably connected to a first plunger rod (61).

4. A detachable live ring pump head with a magnetic segmented plunger rod as claimed in claim 3, characterized in that: The guiding direction of the guide groove (13) is in the radial direction of the power channel (11).

5. A detachable live ring pump head with a magnetic segmented plunger rod as claimed in claim 4, characterized in that: A gap is left between the side wall of the power channel (11) and the first plunger rod (61).

6. A detachable live ring pump head with a magnetic segmented plunger rod as claimed in claim 3, characterized in that: The pump head body (40) is provided with a movable ring groove (43), the movable ring groove (43) provides a holding space for the movable ring rod (18), the movable ring rod (18) limits the radial movement range of the pump head body (40) relative to the pump body (10), the guide groove (13) limits the radial movement range of the guide slider (44) relative to the pump body (10), and the guide groove (13) and the movable ring rod (18) are used for docking and positioning between the first plunger rod (61) and the second plunger rod (64).

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