Flange clamp split pump head of magnetic suction segmented plunger rod

Abstract

The invention discloses a flange clamp split pump head of a magnetic suction segmented plunger rod, and belongs to the technical field of plunger pumps, the flange clamp split pump head comprises a pump head, one side of the pump head is connected with a pump body, the plunger rod is arranged in the pump head and the pump body in a matched mode, the plunger rod is provided with a first rod body and a second rod body, and the end of the first rod body and the end of the second rod body are coaxially connected. A magnetic structure is arranged at the joint of the first rod body and the second rod body and comprises a first magnetic part and a second magnetic part, the first magnetic part is arranged at one end of the first rod body, the second magnetic part is arranged at one end of the second rod body, and the first magnetic part and the second magnetic part can make contact with each other and are attracted through magnetic force. The sectional plunger rod is adopted, and all sections of rod bodies are in magnetic axial connection through the ends, so that the machining difficulty of the plunger rod is reduced, the movement stability of the plunger rod is stabilized, and the medium conveying stability is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of plunger pumps, and in particular relates to a flange clamp split pump head of a magnetic segmented plunger rod. Background Art

[0002] The plunger pump is an important device in the hydraulic system. It relies on the reciprocating motion of the plunger in the cylinder to change the solvent in the sealed working chamber to achieve oil suction and oil pressure. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment.

[0003] At present, the industry usually uses an integrated pump unit, in which the pump body and the pump head are fixedly connected. The plunger pump is difficult to disassemble and install. The process of disassembling and installing the plunger pump is time-consuming and labor-intensive, and the labor cost is high. For some industries with high requirements for disinfection and washing, the complete disassembly and replacement of the plunger pump will also increase production costs. For example, in the food or medical industry, once the plunger pump is completely disassembled, the parts in contact with the plunger pump need to be thoroughly disinfected. For this reason, a detachable plunger pump can address the above problems.

[0004] The invention patent with publication number CN104948410B discloses a booster pump and a booster method thereof. A middle chamber, a left chamber and a right chamber are provided in the middle of the inner side of the booster pump body. A positioning column is provided in the middle of the inner wall of the middle chamber. Piston rods are provided on both sides of the positioning column. The piston rods are composed of an upper piston rod and a lower piston rod. The cross-sectional area of ​​the upper piston rod is at least twice the cross-sectional area of ​​the lower piston rod. The upper piston rod is arranged in the middle chamber, and the lower piston rod is arranged in the left chamber and the right chamber. The device provides oil of a certain pressure for the driving chamber of the booster pump through a plunger pump of the prior art, and controls the ratio of the cross-sectional area of ​​the upper piston rod to the cross-sectional area of ​​the lower piston rod so that oil of a certain pressure is generated in the left chamber and the right chamber at the same time, that is, the higher the ratio of the cross-sectional area of ​​the upper piston rod to the cross-sectional area of ​​the lower piston rod, the higher the oil pressure generated. At the same time, the device can generate a large flow of oil while generating high pressure, without discontinuity, and meets the actual high-pressure operation needs. The plunger assembly disclosed in the invention generates high oil pressure and has the advantages of high medium transport efficiency, large transport flow and continuous transport. However, the difficulty in assembling and disassembling the plunger pump and the plunger rod in the prior art has not been solved. Summary of the invention

[0005] The object of the present invention is to provide a butt-jointed segmented plunger rod flange clamp split pump head which can reduce the difficulty of disassembly and disinfection and has good oil film characteristics.

[0006] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: A flange clamp split pump head with a magnetic segmented plunger rod, comprising: a pump head, the pump head is connected to a pump body on one side, a plunger rod is arranged in cooperation with the pump head and the pump body, the plunger rod has a first rod body and a second rod body coaxially connected at the end, and a magnetic structure is arranged at the connection between the first rod body and the second rod body. The first rod body and the second rod body are connected by the magnetic structure to realize the segmented structure of the plunger rod, which can help reduce the difficulty of plunger rod processing. In the process of the plunger pump continuously moving and conveying the medium, the segmented first rod body and the second rod body are connected by the magnetic structure, and there is no need to set a threaded part or open a threaded groove on the rod body, which reduces the difficulty of processing the segmented plunger rod and reduces the manufacturing cost; The first rod body and the second rod body can be assembled through the magnetic structure to form a plunger rod as a whole, that is, the driving end and the pumping end of the plunger rod can be manufactured in sections to achieve modular production, reduce manufacturing costs and manufacturing difficulty, and improve production efficiency in the plunger rod production process.

[0007] Preferably, the magnetic structure includes a first magnetic member and a second magnetic member, the first magnetic member is arranged at one end of the first rod body, and the second magnetic member is arranged at one end of the second rod body, and the first magnetic member and the second magnetic member can contact each other and be adsorbed by magnetic force. The first magnetic member and the second magnetic member realize the connection between the first rod body and the second rod body through magnetic adsorption. During assembly, the end of the first rod body provided with the first magnetic member is brought close to the end of the second rod body provided with the second magnetic member, and the assembly connection between the first rod body and the second rod body can be quickly realized through magnetic adsorption, without the need to perform posture correction and concentricity correction on the first rod body and the second rod body before assembly, thereby improving the assembly efficiency of the segmented plunger rod; The first magnetic part is in contact with the second magnetic part and is attracted to each other by magnetic force. Compared with the prior art that uses threaded fasteners to achieve rod connection, the connection method of magnetic block adsorption reduces the possibility of wear and tear caused by shaking of the connection due to vibration interference during the movement of the plunger rod, and can reduce the maintenance cost of the segmented plunger rod. At the same time, the wear of the connection can be reduced by magnetic connection, which can reduce the probability of wear debris entering the cavity of the plunger pump moving in the pump head and the pump body, thereby reducing the wear of the outer wall of the plunger rod as a whole during the movement, reducing the risk of leakage of the conveying medium, and at the same time reducing the change of the medium conveying pressure caused by local poor airtightness due to wear, thereby improving the stability of the plunger rod in conveying the medium.

[0008] Preferably, the first rod body is provided with a first mounting hole on one end, and the first magnetic component is installed in the first mounting hole; the second rod body is provided with a second mounting hole on one end, and the second magnetic component is installed in the second mounting hole. The mounting hole realizes the close connection between the magnetic block and the rod body, and provides a storage space for the magnetic block on the inner side of the end of the rod body, which can reduce the exposed volume of the first magnetic component and the second magnetic component. During the movement of the plunger rod, the plunger rod generates heat when it moves in the cavity of the plunger pump, and the heat can be transferred to the plunger rod through the pump body and the pump head. By placing the magnet in the mounting hole, the possibility of heat exchange of the magnetic block in the cavity can be reduced, thereby reducing the influence of temperature on the magnetic attraction force, achieving stable adsorption of the first magnetic component and the second magnetic component, and avoiding the change of the adsorption force of the first magnetic component and the second magnetic component at the connection point, thereby affecting the relative shaking of the first rod body and the second rod body, so that the first rod body and the second rod body can have good coaxiality, reduce the interference of the plunger pump movement, and improve the medium delivery efficiency of the plunger pump; By replacing the magnetic block in the mounting hole, the distance between the first rod body and the second rod body at the connection end can be adjusted, thereby adjusting the overall length of the plunger rod and improving the adaptability to pump heads of different specifications when replacing the pump head.

[0009] Preferably, the first magnetic member has a first magnetic pole extending out of the first mounting hole, and the second magnetic member has a second magnetic pole extending out of the second mounting hole, and the first magnetic pole and the second magnetic pole are opposite to each other and are opposite magnetic poles. The first magnetic pole extends out of the first mounting hole, and the second magnetic pole extends out of the second mounting hole. On the one hand, it avoids the situation where the end faces of the first rod body and the second rod body contact at the connection point, resulting in insufficient contact between the first magnetic pole and the second magnetic pole, improves the stability of the magnetic connection between the first rod body and the second rod body, and helps to stabilize the coaxiality of the two rod bodies. On the other hand, the magnetic pole extending out of the mounting hole can make the first rod body and the second rod body have a spacing between the end faces provided with the magnetic block, which reduces the adsorption of the first magnetic member and the second magnetic member, solves the possibility of collision and wear between the end faces of the first rod body and the second rod body during the assembly process caused by vibration interference, reduces the maintenance cost of the plunger rod, and reduces the difficulty of assembling the plunger rod.

[0010] Preferably, the first magnetic pole has a first end face, the second magnetic pole has a second end face, and the first end face is parallel to the second end face and is arranged in cooperation. The mutually parallel end faces allow the first magnetic member and the second magnetic member to have a relatively stable contact surface, which reduces the difficulty of manufacturing the magnetic block on the one hand, and on the other hand, even if the first rod body and the second rod body have not achieved initial positioning before assembly, the rod bodies can be quickly connected through the cooperation of the parallel end faces, which optimizes the posture calibration work before the first rod body and the second rod body are assembled, and improves the connection efficiency of the first rod body and the second rod body.

[0011] Preferably, the first mounting hole and the second mounting hole are both cylindrical countersunk holes, the first mounting hole and the second mounting hole are coaxially arranged, and the axis of the first mounting hole coincides with the axis of the second rod body. The cylindrical mounting hole is convenient for forming an installation guide for the magnetic block, which improves the efficiency of the connection and assembly between the rod body and the magnetic block; the first mounting hole and the second mounting hole are cylindrical holes and are coaxially arranged with the second rod body, which can ensure that the first mounting hole is located at the center of the end face of the first rod body, and ensure that the second mounting hole is located at the center of the end face of the second rod body, which is conducive to making the magnetic block located at the center position of each rod body end, so that the first magnetic part, the second magnetic part and the plunger rod are subjected to a balanced lateral restraint force during movement, which can reduce the rotation of the plunger rod due to the eccentricity of the first magnetic part and the second magnetic part relative to the plunger rod at the connection point, thereby reducing the wear of the plunger rod on the pump body and the internal cavity of the pump head due to torsion, and improving the service life of the pump head and the pump body, while also reducing the possibility of medium leakage; The above scheme reduces the possibility of wear on the cavity due to torsion of the plunger rod, reduces the wear on the pump head and the internal cavity of the pump body, and can better block the pump body temperature from entering the pump head through the gaps caused by wear, thereby stabilizing the temperature environment of medium transportation, improving the stability of medium transportation, and also avoiding the influence of temperature on the mixing reaction when multiple media are mixed.

[0012] Preferably, the first rod body includes a rod seat and a conveying rod, the first mounting hole is provided at one end of the rod seat, the other end of the rod seat has a third mounting hole, one end of the conveying rod is installed in the third mounting hole, and the other end of the conveying rod can contact the conveying medium.

[0013] Preferably, the pump head and the pump body are detachably connected, and a clamping piece is provided on the outside of the connection between the pump head and the pump body, and the clamping piece has a clamping body that contacts the pump head and the outer surface of the pump body. The detachable connection scheme between the pump head and the pump body can realize the rapid disassembly of the two and the replacement of their internal components, solving the problem of the difficulty in disassembling the plunger pump and the cost of replacing the plunger pump parts. The assembly parts are arranged on the outside of the connection between the pump head and the pump body, ensuring that the pump head and the pump body are continuously and tightly connected, while solving the problem of the need to set threaded connection holes on the pump head and the pump body, which leads to a reduction in the structural strength of the pump head and the pump body, and also reduces the problem of the difficulty in processing the pump head and the pump body.

[0014] Preferably, the clamping body comprises an arc-shaped plate and a fastening element, there are two arc-shaped plates and they surround the periphery of the connection between the pump head and the pump body, and the fastening element can make the arc-shaped plates close to each other and maintain their positions.

[0015] Preferably, the pump head and the pump body have a coaxial and communicating channel, the plunger rod is cooperatively arranged in the channel, and the plunger rod is connected to a driving component at one end away from the pump head, and the driving component is used for the axial reciprocating motion of the plunger rod in the channel.

[0016] Since the present invention adopts a segmented plunger rod and uses a magnetic structure to form a connection, it has the following beneficial effects: the plunger rod has a segmented structure and is connected by a magnetic structure, which is conducive to reducing the difficulty of plunger rod processing and disassembly; the rod bodies can be quickly assembled and connected by magnetic adsorption, without the need for posture correction and concentricity correction, thereby improving the assembly efficiency of the segmented plunger rod; the connection method of magnetic block adsorption reduces the possibility of wear of the segmented rod body due to shaking at the connection, thereby reducing the maintenance cost of the segmented plunger rod; the axial magnetic connection method can reduce the wear of the rod body connection and reduce the impact of debris on the outer wall of the plunger. The wear of the surface can be reduced, thereby reducing the risk of leakage; the axial magnetic connection method can reduce the change of medium delivery pressure caused by the wear of the outer wall of the plunger rod, and improve the stability of the plunger rod in delivering the medium; by placing the magnet in the mounting hole of the rod body, the possibility of heat exchange of the magnetic block in the cavity can be reduced, thereby reducing the influence of temperature on the magnetic attraction force; by replacing the magnetic block, the distance between the rod bodies can be adjusted, thereby realizing the adjustment of the overall length of the plunger rod, and improving the adaptability of the plunger rod when replacing the pump head; the magnetic pole is located outside the mounting hole, which solves the possibility of collision and wear of the end face of the rod body during assembly, and reduces the maintenance cost of the plunger rod and the difficulty of assembly operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view schematic diagram of a flange clamp split pump head with a magnetic segmented plunger rod; Figure 2 for Figure 1 Schematic cross-sectional view in the AA direction; Figure 3 It is a forward schematic diagram of the plunger rod; Figure 4 for Figure 3 Schematic cross-sectional view in the middle BB direction; Figure 5 is a schematic diagram of the structure of the first rod body and the second rod body; Figure 6 A schematic diagram of the clamping structure.

[0018] Figure numbers: pump head 1; first guide portion 11; second guide portion 12; pump body 2; plunger rod 3; first rod body 31; rod seat 310; delivery rod 311; second rod body 32; first magnetic member 4; first mounting hole 41; third mounting hole 42; second magnetic member 5; second mounting hole 51; clamping member 6; arc plate 61; fastening element 62. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below in conjunction with specific implementations and drawings: Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Embodiment 1: See attached Figure 1 - Attachment Figure 3 A flange clamp split pump head with a magnetic segmented plunger rod comprises: a pump head 1, the pump head 1 is connected to a pump body 2 on one side, a plunger rod 3 is arranged inside the pump head 1 and the pump body 2, the plunger rod 3 has a first rod body 31 and a second rod body 32 coaxially connected at the end, and a magnetic structure is provided at the connection between the first rod body 31 and the second rod body 32.

[0021] The first rod body 31 and the second rod body 32 are connected by a magnetic structure to realize a segmented structure of the plunger rod 3, which can help reduce the difficulty of processing the plunger rod 3. When the plunger pump continuously moves to transport the medium, the segmented first rod body 31 and the second rod body 32 are connected by a magnetic structure, and there is no need to set a threaded part or open a threaded groove on the rod body, which reduces the difficulty of processing the segmented plunger rod 3 and reduces the manufacturing cost. The first rod body 31 and the second rod body 32 can be assembled to form the plunger rod 3 as a whole through the magnetic structure, that is, the driving end and the pumping end of the plunger rod 3 can be manufactured in sections to achieve modular production, reduce manufacturing costs and manufacturing difficulty, and improve production efficiency during the production of the plunger rod 3.

[0022] See attached Figure 4 - Attachment Figure 6 The magnetic structure includes a first magnetic component 4 and a second magnetic component 5. The first magnetic component 4 is arranged at one end of the first rod body 31, and the second magnetic component 5 is arranged at one end of the second rod body 32. The first magnetic component 4 and the second magnetic component 5 can contact each other and be adsorbed by magnetic force.

[0023] The first magnetic member 4 and the second magnetic member 5 realize the connection between the first rod body 31 and the second rod body 32 through magnetic adsorption. During assembly, the end of the first rod body 31 provided with the first magnetic member 4 is brought close to the end of the second rod body 32 provided with the second magnetic member 5, and the first rod body 31 and the second rod body 32 can be quickly assembled and connected through magnetic adsorption, without the need to perform posture correction and concentricity correction on the first rod body 31 and the second rod body 32 before assembly, thereby improving the assembly efficiency of the segmented plunger rod 3; The first magnetic part 4 is in contact with the second magnetic part 5 and is attracted to each other by magnetic force. Compared with the prior art that uses threaded fasteners to achieve rod connection, the connection method of magnetic block adsorption reduces the possibility of wear and tear caused by shaking of the connection due to vibration interference during the movement of the plunger rod 3, which can reduce the maintenance cost of the segmented plunger rod 3. At the same time, the wear of the connection can be reduced by magnetic connection, which can reduce the probability of wear debris entering the cavity where the plunger pump moves in the pump head 1 and the pump body 2, thereby reducing the wear of the outer wall of the plunger rod 3 as a whole during the movement, reducing the risk of leakage of the conveying medium, and at the same time reducing the change in the medium conveying pressure caused by local poor airtightness due to wear, thereby improving the stability of the plunger rod 3 in conveying the medium.

[0024] The first rod 31 has a first mounting hole 41 at one end, and the first magnetic member 4 is mounted in the first mounting hole 41 . The second rod 32 has a second mounting hole 51 at one end, and the second magnetic member 5 is mounted in the second mounting hole 51 .

[0025] The mounting hole realizes a close connection between the magnetic block and the rod body, and provides a storage space for the magnetic block on the inner side of the rod body end, which can reduce the exposed volume of the first magnetic member 4 and the second magnetic member 5. During the movement of the plunger rod 3, the plunger rod 3 generates heat when it moves in the cavity of the plunger pump, and the heat can be transferred to the plunger rod 3 through the pump body 2 and the pump head 1. By placing the magnet in the mounting hole, the possibility of heat exchange of the magnetic block in the cavity can be reduced, thereby reducing the influence of temperature on the magnetic attraction force, achieving stable adsorption of the first magnetic member 4 and the second magnetic member 5, and avoiding the change of the adsorption force of the first magnetic member 4 and the second magnetic member 5 at the connection point, thereby affecting the relative shaking of the first rod body 31 and the second rod body 32, so that the first rod body 31 and the second rod body 32 can have good coaxiality, reduce the interference of the plunger pump movement, and improve the medium delivery efficiency of the plunger pump; By replacing the magnetic block in the mounting hole, the distance between the first rod body 31 and the second rod body 32 at the connection end can be adjusted, thereby achieving adjustment of the overall length of the plunger rod 3, which is convenient for adapting to pump heads 1 of different specifications when replacing the pump head 1.

[0026] The first magnetic member 4 has a first magnetic pole extending out of the first mounting hole 41 , and the second magnetic member 5 has a second magnetic pole extending out of the second mounting hole 51 . The first magnetic pole and the second magnetic pole are opposite to each other and are opposite magnetic poles.

[0027] The first magnetic pole extends out of the first mounting hole 41, and the second magnetic pole extends out of the second mounting hole 51. On the one hand, this avoids the situation where the end faces of the first rod body 31 and the second rod body 32 contact at the connection point, resulting in insufficient contact between the first magnetic pole and the second magnetic pole, thereby improving the stability of the magnetic connection between the first rod body 31 and the second rod body 32, and helping to stabilize the coaxiality of the two rod bodies. On the other hand, the magnetic poles extending out of the mounting holes can enable a spacing to exist between the end faces of the first rod body 31 and the second rod body 32 where the magnetic blocks are provided, thereby reducing the adsorption of the first magnetic component 4 and the second magnetic component 5, thereby solving the possibility of collision and wear between the end faces of the first rod body 31 and the second rod body 32 during the assembly process caused by vibration interference, thereby reducing the maintenance cost of the plunger rod 3, and reducing the difficulty of assembling the plunger rod 3.

[0028] The first magnetic pole has a first end face, and the second magnetic pole has a second end face, and the first end face is parallel to the second end face and is arranged in cooperation. The mutually parallel end faces make the first magnetic member 4 and the second magnetic member 5 have a relatively stable contact surface, which reduces the difficulty of manufacturing the magnetic block on the one hand, and on the other hand, even if the first rod body 31 and the second rod body 32 are not initially positioned before assembly, the rod bodies can be quickly connected through the cooperation of the parallel end faces, which optimizes the posture calibration work before the first rod body 31 and the second rod body 32 are assembled, and improves the connection efficiency of the first rod body 31 and the second rod body 32.

[0029] The first mounting hole 41 and the second mounting hole 51 are both cylindrical countersunk holes. The first mounting hole 41 and the second mounting hole 51 are coaxially arranged, and the axis of the first mounting hole 41 coincides with the axis of the second rod body 32 .

[0030] The cylindrical mounting hole is convenient for forming the mounting guide of the magnetic block, and improves the efficiency of the connection and assembly between the rod body and the magnetic block; the first mounting hole 41 and the second mounting hole 51 are cylindrical holes and are coaxially arranged with the second rod body 32, which can ensure that the first mounting hole 41 is located at the center of the end face of the first rod body 31, and ensure that the second mounting hole 51 is located at the center of the end face of the second rod body 32, which is conducive to making the magnetic block located at the center position of each rod end, so that the first magnetic member 4, the second magnetic member 5 and the plunger rod 3 are subjected to a balanced lateral restraint force during the movement, which can reduce the rotation of the plunger rod 3 due to the eccentricity of the first magnetic member 4 and the second magnetic member 5 relative to the plunger rod 3 at the connection point, thereby reducing the wear of the plunger rod 3 on the pump body 2 and the internal cavity of the pump head 1 due to the torsion, and improving the service life of the pump head 1 and the pump body 2. At the same time, it can also reduce the possibility of medium leakage; The above scheme reduces the possibility of wear on the cavity due to the torsion of the plunger rod 3, reduces the wear on the pump head 1 and the internal cavity of the pump body 2, and can better block the temperature of the pump body 2 from entering the pump head 1 through the gaps caused by wear, thereby stabilizing the temperature environment of medium transportation, improving the stability of medium transportation, and also avoiding the influence of temperature on the mixing reaction when multiple media are mixed.

[0031] The first rod body 31 includes a rod seat 310 and a conveying rod 311. The first mounting hole 41 is provided at one end of the rod seat 310. The other end of the rod seat 310 has a third mounting hole 42. One end of the conveying rod 311 is mounted in the third mounting hole 42. The other end of the conveying rod 311 can contact the conveying medium.

[0032] The pump head 1 and the pump body 2 are detachably connected, and a clamping member 6 is provided on the outside of the connection between the pump head 1 and the pump body 2, and the clamping member 6 has a clamping body that contacts the outer surfaces of the pump head 1 and the pump body 2. The detachable connection scheme between the pump head 1 and the pump body 2 can realize the rapid disassembly of the two and the replacement of their internal components, solving the problem of the difficulty in disassembly of the plunger pump and the cost of replacing the plunger pump parts. The assembly parts are arranged on the outside of the connection between the pump head 1 and the pump body 2, ensuring that the pump head 1 and the pump body 2 are continuously and tightly connected, while solving the problem of the need to set threaded connection holes on the pump head 1 and the pump body 2, which leads to a reduction in the structural strength of the pump head 1 and the pump body 2, and also reduces the problem of the difficulty in processing the pump head 1 and the pump body 2.

[0033] See attached Figure 6 The clamp body includes an arc-shaped plate 61 and a fastening element 62. There are at least two arc-shaped plates 61 surrounding the periphery of the connection between the pump head 1 and the pump body 2. The fastening element 62 can make each arc-shaped plate 61 close to each other and maintain the position.

[0034] The pump head 1 includes a first guide portion 11 on the outside, the pump body 2 includes a second guide portion 12 on the outside that matches the first guide portion 11, and two arc-shaped plates 61 symmetrically surround the first guide portion 11 and the second guide portion 12; The first guide portion 11 has a first guide surface at the outer edge, and the second guide portion 12 has a second guide surface at the outer edge. Both the first guide surface and the second guide surface are conical surfaces and approach each other at the outer edges. The arc plate 61 has an internal contour that matches the first guide surface and the second guide surface.

[0035] The elastic structure is located in a channel in the pump head 1 .

[0036] The first guide surface and the second guide surface are close to each other, forming a conical surface on each guide portion. The clamp body can better realize the installation guidance outside the first guide portion 11 and the second guide portion 12 through the inner contour, thereby improving the assembly efficiency of the pump head 1 and the pump body 2. Since the first guide surface and the second guide surface are conical surfaces, when the clamp body is in close contact with the first guide surface and the second guide surface through the inner contour, the first guide portion 11 and the second guide portion 12 can be squeezed toward each other through the conical surface, and at the same time, the outer edges of the first guide portion 11 and the second guide portion 12 can be aligned under the contact of the inner contour, so that the pump head 1 and the pump body 2 can be quickly aligned and closely matched in the connection direction during assembly, thereby improving the assembly accuracy and assembly efficiency after replacing the pump head 1; Since the plunger rod 3 in the present case is divided into a first rod body 31 and a second rod body 32, the two rod bodies are magnetically connected through the magnetic blocks at the ends, and the first guide portion 11 and the second guide portion 12 are clamped and the outer contours are aligned through the internal contour of the arc plate 61, so that the pump body 2 can be aligned and clamped relative to the pump head 1, and further the channels in the pump body 2 and the pump head 1 can be aligned. Since the plunger rod 3 cooperates in the channel, that is, the channel has a restrictive effect on the plunger rod 3, when the pump head 1 is connected to the pump body 2, the magnetic blocks at the ends of the first rod body 31 and the second rod body 32 can be aligned and in close contact through the alignment of the channel, that is, the restraining effect of the arc plate 61 on the first guide portion 11 and the second guide portion 12, the coaxiality of the two rod bodies in the axial magnetic connection of the segmented plunger rod 3 is achieved, thereby reducing or even eliminating the axial offset of the first rod body 31 and the second rod body 32, which is beneficial to improving the assembly accuracy of the segmented plunger rod 3 without adding additional correction steps.

[0037] The two arc-shaped plates 61 are hinged at one end, and the two arc-shaped plates 61 have protrusions at the non-hinged ends, and each protrusion has a U-shaped opening on the side wall; The fastening element 62 includes a connecting rod 620 and a rotating member 621; The connecting rod 620 has a connecting end and a free end. The connecting end is installed in one of the U-shaped openings. The connecting rod 620 can pass through the other U-shaped opening. The rotating member 621 is sleeved outside the connecting rod 620 and the two are threadedly connected. The rotating member 621 squeezes the protrusion near the free end.

[0038] During assembly, the two arc plates 61 are opened at the hinges; one of the arc plates 61 is covered on one side outside the first guide part 11 and the second guide part 12 to form an initial positioning; the other arc plate 61 is swung at the hinge to cover the other side outside the first guide part 11 and the second guide part 12 to form a secondary positioning; during the swinging of the arc plate 61, the connecting rod 620 passes through the U-shaped opening on the protrusion of the swinging arc plate 61; the rotating member 621 is inserted through the free end of the connecting rod 620, and the rotating member 621 is rotated to approach and squeeze the protrusion close to the free end on the connecting rod 620, so that the two protrusions are close to each other, thereby realizing the connection of the two arc plates 61 outside the first guide part 11 and the second guide part 12, thereby realizing the assembly of the pump body 2 and the pump head 1.

[0039] During disassembly, the rotating member 621 is rotated in the opposite direction to lose the tension between the protrusions, and one of the arc plates 61 is swung at the hinge to open the two arc plates 61 to each other and disengage from the first guide portion 11 and the second guide portion 12; at this time, the pump head 1 and the pump body 2 lose the assembly restriction, the positioning member between the first rod body 31 and the second rod body 32 is removed through the mounting hole, and the positioning member is taken out through the mounting hole, at this time, the first rod body 31 and the second rod body 32 lose the assembly restriction, the pump head 1 carrying the second rod body 32 is separated from the pump body 2 carrying the first rod body 31, thereby realizing the synchronous and rapid disassembly of the pump head 1, the pump body 2, the first rod body 31 and the second rod body 32.

[0040] When the two arc plates 61 swing relative to each other, the positions of the two protrusions can correspond through the cooperation of the connecting rod 620 in the U-shaped opening, which improves the convenience of clamping the arc plates 61 with each other during assembly and is conducive to the rapid assembly of the pump head 1 and the pump body 2.

[0041] The connecting rod 620 is directly fixed in the U-shaped opening of one of the protrusions through the connecting end, which solves the problem of finding an additional pin for positioning when clamping the protrusion, simplifies the structure of the assembly, reduces the number of parts of the assembly, and improves operational convenience.

[0042] The cooperation of the connecting rod 620 in the two protrusions can also enable the two arc-shaped plates 61 to swing in a predetermined path. By observing whether the connecting rod 620 can be cooperated in the U-shaped opening, it can be judged whether the two arc-shaped plates 61 are offset at the hinge, which realizes the rapid judgment of whether there is a problem with the assembly parts, optimizes the quality inspection of the parts before the assembly of the plunger pump, and improves the efficiency of the inspection before the assembly of the plunger pump. The pump head 1 and the pump body 2 have a coaxial and communicating channel, and the plunger rod 3 is cooperatively arranged in the channel. The plunger rod 3 is connected to a driving component at one end away from the pump head 1, and the driving component is used for the axial reciprocating motion of the plunger rod 3 in the channel.

[0043] Embodiment 2: Based on the embodiment 1 of the present case, the first magnetic member 4 is a magnetic material, the second magnetic member 5 is an electromagnet, and the second magnetic member 5 can change its magnetic attraction ability by powering on and off.

[0044] When the first rod 31 and the second rod 32 need to be connected, the first magnetic component 4 is brought close to the second magnetic component 5. At this time, the second magnetic component 5 is in a power-off state and has magnetic attraction. The first magnetic component 4 can be adsorbed by the second magnetic component 5 through magnetic force to achieve the connection between the first rod 31 and the second rod 32.

[0045] When the first rod 31 and the second rod 32 need to be separated, the second magnetic member 5 is energized to make the second magnetic member 5 lose its magnetism. At this time, the second magnetic member 5 and the first magnetic member 4 lose their magnetic attraction, and the first rod 31 and the second rod 32 can be separated normally.

[0046] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A flange clamp split pump head with a magnetic segmented plunger rod, comprising: A pump head (1), wherein the pump head (1) is connected to a pump body (2) on one side, and a plunger rod (3) is provided in cooperation with the pump head (1) and the pump body (2), wherein the plunger rod (3) comprises a first rod body (31) and a second rod body (32) which are coaxially connected at the ends, and a magnetic structure is provided at the connection between the first rod body (31) and the second rod body (32).

2. The flange clamp split pump head with magnetic segmented plunger rod according to claim 1 is characterized by: The magnetic structure comprises a first magnetic component (4) and a second magnetic component (5), wherein the first magnetic component (4) is arranged at one end of the first rod body (31), and the second magnetic component (5) is arranged at one end of the second rod body (32), and the first magnetic component (4) and the second magnetic component (5) can contact each other and be attracted by magnetic force.

3. The flange clamp split pump head with magnetic segmented plunger rod according to claim 2 is characterized by: The first rod body (31) is provided with a first mounting hole (41) at one end, and the first magnetic component (4) is mounted in the first mounting hole (41); the second rod body (32) is provided with a second mounting hole (51) at one end, and the second magnetic component (5) is mounted in the second mounting hole (51).

4. The flange clamp split pump head with magnetic segmented plunger rod according to claim 3 is characterized by: The first magnetic member (4) has a first magnetic pole extending out of the first mounting hole (41), and the second magnetic member (5) has a second magnetic pole extending out of the second mounting hole (51), the first magnetic pole and the second magnetic pole being opposite to each other and having opposite magnetic poles.

5. The flange clamp split pump head with magnetic segmented plunger rod according to claim 4 is characterized in that: The first magnetic pole has a first end surface, the second magnetic pole has a second end surface, and the first end surface is parallel to and matched with the second end surface.

6. The flange clamp split pump head with magnetic segmented plunger rod according to claim 3 is characterized by: The first mounting hole (41) and the second mounting hole (51) are both cylindrical countersunk holes; the first mounting hole (41) and the second mounting hole (51) are coaxially arranged; and the axis of the first mounting hole (41) coincides with the axis of the second rod body (32).

7. The flange clamp split pump head with magnetic segmented plunger rod according to claim 3 is characterized by: The first rod body (31) comprises a rod seat (310) and a conveying rod (311); the first mounting hole (41) is provided at one end of the rod seat (310); the other end of the rod seat (310) has a third mounting hole (42); one end of the conveying rod (311) is mounted in the third mounting hole (42); and the other end of the conveying rod (311) can contact a conveying medium.

8. The flange clamp split pump head with magnetic segmented plunger rod according to claim 1 is characterized by: The pump head (1) is detachably connected to the pump body (2); a clamping piece (6) is provided on the outside of the connection between the pump head (1) and the pump body (2); the clamping piece (6) comprises a clamping body that contacts the outer surfaces of the pump head (1) and the pump body (2).

9. The flange clamp split pump head with magnetic segmented plunger rod according to claim 8, characterized in that: The clamp body comprises an arc-shaped plate (61) and a fastening element (62); the arc-shaped plates (61) are two and surround the periphery of the connection between the pump head (1) and the pump body (2); the fastening element (62) can bring the arc-shaped plates (61) close to each other and maintain their positions.

10. The flange clamp split pump head with magnetic segmented plunger rod according to claim 1, characterized in that: The pump head (1) and the pump body (2) have coaxial and communicating channels, the plunger rod (3) is cooperatively arranged in the channel, and the plunger rod (3) is connected to a driving component at one end away from the pump head (1), and the driving component is used for the plunger rod (3) to move axially back and forth in the channel.

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