A deviation-correcting plunger structure

Abstract

The present invention discloses a deviation-correcting plunger structure, which belongs to the field of plunger technology. The deviation-correcting plunger structure includes a plunger body as a mounting carrier, a funnel groove is provided at the tail end of the interior of the plunger body, a plunger ball head is installed at the tail end of the plunger body, a plurality of groups of oil inlet holes connected to the bottom of the interior of the plunger body are provided at the bottom end of the exterior of the plunger body, and an anti-scratch wall assembly is provided at the head end of the exterior of the plunger body. The present invention utilizes the cooperation of the oil injection auxiliary assembly and the cylinder body to ensure that the plunger body can automatically correct its deviation after entering the cylinder cavity, avoiding friction damage between the plunger body and the inner wall of the cylinder cavity, which leads to a reduction in the sealing between the outer wall of the plunger body and the inner wall of the cavity, and an anti-scratch wall assembly is also provided at the head end of the plunger body, so that the friction between the head end of the plunger body and the inner wall of the cavity is changed from sliding friction to rolling friction, thereby helping to further improve the flow output stability of the entire plunger mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of plungers, and in particular relates to a deviation-correcting plunger structure. Background Art

[0002] The plunger pump relies on the reciprocating motion of the plunger in the cylinder to cause periodic changes in the volume of the sealed working chamber to achieve the purpose of transporting liquid. The corrective plunger of the plunger pump is a mechanical component used to achieve precise position control and force transmission. It is often used in hydraulic systems, automation equipment and other fields. In many mechanical equipment involving plunger applications, the stable movement of the plunger plays a key role in the performance and life of the equipment.

[0003] Due to factors such as vibration during actual operation of the plunger pump and inconsistent friction between the plunger and the cylinder body, the plunger is very likely to shift, which may lead to unstable flow output and reduce the working efficiency of the pump; and in the process of the plunger moving back and forth, the oil body is often unidirectionally circulated in the plunger body by cooperating with the ball in the plunger body and the funnel groove. After repeated collisions between the ball and the funnel groove, the sealing effect between the ball and the funnel groove may be affected, thereby reducing the flow output effect of the plunger body; at the same time, in the process of the reciprocating movement of the plunger, the negative pressure in the cavity is used to suck the hydraulic oil into the cavity through the internal channel of the plunger body. However, when the plunger body moves back and forth rapidly, the hydraulic oil may be affected when it enters the negative pressure cavity through the plunger oil inlet hole, thereby reducing the use effect of the plunger mechanism. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a deviation-correcting plunger structure.

[0005] The technical solution adopted to solve the above technical problems is: a correcting plunger structure, including a plunger body as an installation carrier, a funnel groove is provided at the tail end inside the plunger body, a plunger ball head is installed at the tail end of the plunger body, and several groups of oil inlet holes connected to the bottom of the plunger body are opened at the bottom end of the outer side of the plunger body, an anti-scratch wall assembly is provided at the head end of the outer side of the plunger body, a correcting assembly is provided at the bottom end of the outer side of the plunger body, a flow guide assembly is provided inside the plunger body, an anti-backflow assembly that cooperates with the flow guide assembly is provided inside the plunger body, an oil filling auxiliary assembly is provided at the bottom end of the outer side of the plunger body, and anti-leakage assemblies are provided at the top and bottom ends of the outer side of the plunger body.

[0006] Furthermore, the anti-scratch wall assembly includes a first annular groove located at the outer head end of the plunger body, a first arc-shaped surface is provided at the top end of the outer side of the first annular groove, ball grooves are evenly provided on the outer side of the first annular groove, and balls are provided inside the ball grooves.

[0007] Through the above technical solution, during the reciprocating movement of the plunger body in the cylinder cavity, once the plunger body is offset, the ball at the head end of the plunger body can roll on the inner wall of the cylinder cavity, using rolling friction instead of sliding friction to avoid damage to the plunger body and the inner wall of the cylinder cavity due to sliding friction, thereby ensuring the stability of the plunger body in pushing the hydraulic oil.

[0008] Furthermore, the correction assembly includes a second annular groove opened at the bottom end of the outer side of the plunger body, a movable ring is provided on the outer side of the second annular groove close to the end of the first annular groove, and a first return spring is provided on the outer side of the second annular groove, and the two ends of the first return spring are respectively fixedly connected to the second annular groove and the bottom of the movable ring.

[0009] Through the above technical solution, when the plunger body is fully inserted into the cylinder cavity, the movable ring rests on the cylinder body outside the cavity, and the cylinder body outside the cavity pushes the movable ring to slide on the second annular groove. The first return spring is shortened under force and stores elastic potential energy, and the correction is performed during the process of the plunger body fully entering the cavity. The plunger body is highly concentric during operation and does not produce eccentric wear.

[0010] Furthermore, the guide assembly includes a limiting ring installed at the bottom of the plunger body, a connecting tube body is installed inside the plunger body, and cylinders are symmetrically installed on the top and bottom of the connecting tube body, spherical grooves are provided on the top and bottom of the cylinder, oil passage holes are evenly opened at non-center positions of the cylinder, a sliding hole is opened at the center position of the cylinder, and the limiting ring is located above the movable ring.

[0011] Through the above technical solution, after the hydraulic oil enters the plunger body through the oil inlet hole, the hydraulic oil will leave the interior of the plunger body through the connecting tube body and the oil passage holes on the two sets of cylinders. The limit ring will limit the position of the cylinder inside the plunger body, the spherical groove will help the hydraulic oil enter the oil passage hole, and the sliding hole will help the movable rod to slide back and forth stably.

[0012] Furthermore, the oil injection auxiliary component includes a first baffle ring and a second baffle ring located at the bottom end of the outer side of the plunger body, the first baffle ring and the second baffle ring are arranged between several groups of oil inlet holes, the first baffle ring is located above the second baffle ring, and the edge positions of the tops of the first baffle ring and the second baffle ring are both provided with a second arc-shaped surface, and the bottoms of the inner sides of the first baffle ring and the second baffle ring are both provided with a guide cut surface, and the outer diameter of the first baffle ring is larger than the outer diameter of the second baffle ring.

[0013] Through the above technical solution, during the process of withdrawing the plunger body from the cylinder cavity, the guiding cut surfaces at the bottom of the first retaining ring and the second retaining ring are more helpful in pushing the hydraulic oil into the oil inlet hole. The outer diameter of the first retaining ring is larger than the outer diameter of the second retaining ring, so that the hydraulic oil can be pushed into the two circles of oil inlet holes, and the second curved surfaces on the first retaining ring and the second retaining ring reduce the resistance encountered by the first retaining ring and the second retaining ring during the process of the plunger body entering the cylinder cavity.

[0014] Furthermore, the anti-backflow assembly includes a movable rod inserted into the two groups of sliding through holes, the bottom end of the movable rod is equipped with a blocking ball that cooperates with the funnel groove, the bottom end of the outer side of the movable rod is sleeved with a second return spring, and the top of the second return spring is fixedly connected to the bottom of a group of cylinders at the bottom, the top of the movable rod is equipped with a conical block that matches the spherical groove, and the top of the conical block is provided with a conical groove.

[0015] Through the above technical solution, when the pressure between the head end of the plunger body and the cavity is negative, the conical block is forced to no longer block the oil passage holes on a group of cylinders at the head end, the movable rod slides inside the two groups of sliding holes, and the blocking ball does not contact the inner wall of the funnel groove. The second return spring is shortened under force and stores elastic potential energy. At this time, the hydraulic oil can pass through the oil inlet hole, the funnel groove and the interior of the plunger body in turn, and then enter the cylinder cavity through the oil passage holes of the top group of cylinders. When the plunger body pushes the hydraulic oil in the cylinder cavity, the conical groove can improve the uniform force on the conical block.

[0016] Furthermore, the anti-leakage component includes two groups of annular grooves on the outside of the plunger body, and guide rings are provided inside the two groups of annular grooves, and the bottom group of annular grooves is located below the limiting ring.

[0017] Through the above technical solution, two sets of guide rings are used to play a supporting and guiding role, protecting the cylinder body and the outer side of the plunger body from being damaged due to friction.

[0018] Furthermore, the second annular groove is located above the oil inlet hole, the two groups of annular grooves are both located above the second annular groove, and the first annular groove is located above the annular groove.

[0019] Through the above technical solution, the second annular groove is located above the oil inlet hole, which makes it easier for the cylinder cavity to push the movable ring on the second annular groove to slide, and the two sets of annular grooves are both located above the second annular groove, so that the guide ring plays a supporting and guiding role, preventing the plunger body from direct contact and friction with the inner wall of the cylinder during movement.

[0020] Furthermore, spiral oil grooves are evenly formed on the surface of the plunger body, and the groove depth of the spiral oil grooves is between 1-2 mm, the groove width of the spiral oil grooves is between 2-3 mm, and the spiral oil grooves are located between the two groups of annular grooves.

[0021] Through the above technical solution, the spiral oil groove can ensure the strength of the plunger and avoid affecting its load-bearing capacity, and can fully exert its correction and lubrication functions to improve the stability of the plunger body during the reciprocating motion.

[0022] Furthermore, the oil inlet holes are provided with two circles, and the two circles of oil inlet holes are staggeredly distributed at the bottom of the outer side of the plunger body. The oil inlet holes are opened on the plunger body at an angle from the outside to the inside.

[0023] Through the above technical solution, the several groups of oil inlet holes opened obliquely are more conducive to the hydraulic oil entering the interior of the plunger body from the several groups of oil inlet holes when the plunger body leaves the cylinder cavity.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention can ensure that the plunger body can automatically correct its deviation after entering the cylinder cavity through the oil injection auxiliary component during the reciprocating motion of the plunger body, by utilizing the cooperation between the oil injection auxiliary component and the cylinder body, thereby avoiding friction damage between the plunger body and the inner wall of the cylinder cavity, which leads to reduced sealing between the outer wall of the plunger body and the inner wall of the cavity, and an anti-scratch wall component is also provided at the head end of the plunger body, so that even if the plunger body deviates in the process of leaving the cavity, the friction between the head end of the plunger body and the inner wall of the cavity can be changed from sliding friction to rolling friction, thereby helping to further improve the flow output stability of the entire plunger mechanism; (2) The present invention uses the cooperation of the guide component and the anti-backflow component, so that during the pressurized oil delivery process of the plunger mechanism, the second return spring can stably move back and forth The line moves so that the second return spring can be stably attached to the inner wall of the funnel groove, ensuring the sealing and flow-blocking effect of the second return spring and the inner wall of the funnel groove, and the cooperation of the conical block and the spherical groove can add another flow-blocking structure, thereby fully avoiding the situation where the hydraulic oil in the piston body flows back, and thus ensuring the flow output effect of the piston mechanism; (3) The present invention sets multiple groups of oil inlet holes as inclined inlets, and then cooperates with the oil injection auxiliary component, so that when the piston mechanism is drawn out from the cylinder cavity, in addition to using the negative pressure to force the hydraulic oil to be sucked into the cylinder cavity from the oil inlet hole, the oil injection auxiliary component can also be used to push the hydraulic oil from the oil inlet hole into the piston body, thereby allowing the hydraulic oil to stably pass through the oil inlet hole and the interior of the piston body and then enter the cylinder cavity, thereby ensuring the use effect of the piston mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a first perspective structural diagram of the present invention;

[0026] Figure 2 This is a second perspective structural diagram of the present invention;

[0027] Figure 3 It is an exploded structural diagram of the present invention from a first perspective;

[0028] Figure 4 It is an exploded structural diagram of the present invention from a second viewing angle;

[0029] Figure 5 It is a front schematic diagram of the present invention;

[0030] Figure 6 It is a longitudinal cross-sectional schematic diagram of the present invention;

[0031] Figure 7 This is a structural diagram of the plunger body from a first perspective of the present invention;

[0032] Figure 8 This is a structural diagram of the plunger body from a second perspective of the present invention;

[0033] Figure 9 This is a schematic structural diagram of the flow guide mechanism of the present invention from a first perspective;

[0034] Figure 10 This is a schematic structural diagram of the flow guide mechanism of the present invention from a second perspective;

[0035] Figure 11 It is a structural schematic diagram of the oil injection auxiliary mechanism of the present invention;

[0036] Figure 12 This is a structural diagram of the anti-backflow mechanism of the present invention from a first perspective;

[0037] Figure 13 This is a structural diagram of the backflow prevention mechanism of the present invention from a second perspective;

[0038] Figure 14 This invention Figure 6 A magnified schematic diagram of point A;

[0039] Figure 15 This invention Figure 7 Enlarged schematic diagram of point B.

[0040] Reference numerals: 1. plunger body; 2. anti-scratch wall assembly; 201. first annular groove; 202. first arcuate surface; 203. ball groove; 204. ball; 3. deviation correction assembly; 301. second annular groove; 302. movable ring; 303. first return spring; 4. flow guide assembly; 401. limit ring; 402. cylinder; 403. connecting tube; 404. spherical groove; 405. oil passage hole; 406. sliding hole; 5. injection Oil auxiliary assembly; 501, first retaining ring; 502, second retaining ring; 503, second arc-shaped surface; 504, guide section; 6, anti-backflow assembly; 601, movable rod; 602, blocking ball; 603, second return spring; 604, truncated cone block; 605, truncated cone groove; 7, anti-leakage assembly; 701, annular groove; 702, guide ring; 8, spiral oil groove; 9, plunger ball head; 10, funnel groove; 11, oil inlet hole. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0042] like Figures 1-8 and Figure 14-15As shown, a correction plunger structure of the present embodiment includes a plunger body 1 as a mounting carrier, a funnel groove 10 is provided at the tail end inside the plunger body 1, a plunger ball head 9 is installed at the tail end of the plunger body 1, an anti-scratch wall assembly 2 is provided at the head end of the outer side of the plunger body 1, and a correction assembly 3 is provided at the bottom end of the outer side of the plunger body 1. The anti-scratch wall assembly 2 includes a first annular groove 201 opened at the head end of the outer side of the plunger body 1, a first arcuate surface 202 is provided at the top end of the outer side of the first annular groove 201, ball grooves 203 are evenly provided on the outer side of the first annular groove 201, and balls 204 are provided inside the ball grooves 203, the correction assembly 3 includes a second annular groove 301 opened at the bottom end of the outer side of the plunger body 1, a movable ring 302 is provided at one end of the outer side of the second annular groove 301 close to the first annular groove 201, a first return spring 303 is provided on the outer side of the second annular groove 301, and the two ends of the first return spring 303 are respectively connected to the second annular groove The bottom of 301 and the movable ring 302 are fixedly connected. During the reciprocating movement of the plunger body 1 in the cylinder cavity, once the plunger body 1 deviates, the ball 204 at the head end of the plunger body 1 can roll on the inner wall of the cylinder cavity, and rolling friction is used instead of sliding friction to avoid damage to the plunger body 1 and the inner wall of the cylinder cavity due to sliding friction, thereby ensuring the stability of the plunger body 1 in pushing the hydraulic oil. When the plunger body 1 is fully inserted into the cylinder cavity, the movable ring 302 rests on the cylinder body outside the cavity, and the cylinder body outside the cavity pushes the movable ring 302 to slide on the second annular groove 301. The first return spring 303 is shortened by force and stores elastic potential energy, which is transmitted and corrected during the process of the plunger body 1 fully entering the cavity. The plunger body 1 is highly concentric during operation and does not produce eccentric wear, thereby making the plunger body 1 more stable during the reciprocating motion, reducing the possibility of the plunger body 1 deviating and the friction damage caused by the deviating.

[0043] like Figure 1 、 Figure 3 、 Figure 6 、 Figure 9-10 and Figure 12-14As shown, the interior of the plunger body 1 of this embodiment is provided with a flow guide component 4, and the interior of the plunger body 1 is provided with an anti-backflow component 6 that cooperates with the flow guide component 4. The flow guide component 4 includes a limit ring 401 installed at the bottom of the plunger body 1, and a connecting tube body 403 is installed inside the plunger body 1, and a cylinder 402 is symmetrically installed on the top and bottom of the connecting tube body 403. The top and bottom of the cylinder 402 are both provided with a spherical groove 404. The cylinder 402 is evenly provided with oil through holes 405 at the non-center position, and the center position of the cylinder 402 is provided with a The sliding through hole 406 and the limiting ring 401 are located above the movable ring 302. The backflow prevention component 6 includes a movable rod 601 inserted into the two sets of sliding through holes 406. The bottom end of the movable rod 601 is equipped with a blocking ball 602 that cooperates with the funnel groove 10. The bottom end of the outer side of the movable rod 601 is sleeved with a second return spring 603, and the top of the second return spring 603 is fixedly connected to the bottom of the bottom group of cylinders 402. The top of the movable rod 601 is equipped with a frustum block 604 that adapts to the spherical groove 404. The top of the frustum block 604 is provided with a round The trapezoidal groove 605, after the hydraulic oil enters the plunger body 1 through the oil inlet holes 11 and 10, the hydraulic oil will leave the interior of the plunger body 1 through the connecting tube 403 and the oil passage holes 405 on the two sets of cylinders 402, and the limiting ring 401 will limit the position of the cylinder 402 inside the plunger body 1, the spherical groove 404 will help the hydraulic oil to enter the oil passage hole 405, and the sliding hole 406 will help the movable rod 601 to slide back and forth stably. When the pressure between the head end of the plunger body 1 and the cavity is in a negative state, the cone block 604 is forced to no longer block the head. The oil passage holes 405 on the end group of cylinders 402, the movable rod 601 slides inside the two groups of sliding holes 406, and the blocking ball 602 does not contact the inner wall of the funnel groove 10. The second return spring 603 is shortened under force and stores elastic potential energy. At this time, the hydraulic oil can pass through the oil inlet hole 11, the funnel groove 10 and the interior of the plunger body 1 in turn, and then enter the cylinder cavity through the oil passage holes 405 of the top group of cylinders 402. When the plunger body 1 pushes the hydraulic oil in the cylinder cavity, the conical groove 605 can improve the uniform force of the conical block 604.

[0044] like Figure 1-Figure 5 、 Figure 7-Figure 8 、 Figure 11 and Figure 14As shown, the bottom end of the outer side of the plunger body 1 of this embodiment is provided with a plurality of groups of oil inlet holes 11 connected to the bottom of the inner side of the plunger body 1, and the bottom end of the outer side of the plunger body 1 is provided with an oil injection auxiliary component 5, which includes a first baffle ring 501 and a second baffle ring 502 located at the bottom end of the outer side of the plunger body 1. The first baffle ring 501 and the second baffle ring 502 are arranged between the plurality of oil inlet holes 11, the first baffle ring 501 is located above the second baffle ring 502, and the first baffle ring 501 and the second baffle ring 502 are located above the first baffle ring 501 and the second baffle ring 502. The edge of the plunger body 1 is provided with a second arc surface 503, the bottom of the inner side of the first retaining ring 501 and the second retaining ring 502 is provided with a guide cut surface 504, the outer diameter of the first retaining ring 501 is larger than the outer diameter of the second retaining ring 502, the oil inlet hole 11 is provided with two circles, and the two circles of oil inlet holes 11 are staggered at the bottom of the outer side of the plunger body 1. The oil inlet holes 11 are opened on the plunger body 1 from the outside to the inside, and the surface of the plunger body 1 is evenly provided with spiral oil grooves 8, and the groove depth of the spiral oil grooves 8 is 1- 2mm, the groove width of the spiral oil groove 8 is between 2-3mm, and the spiral oil groove 8 is located between the two groups of annular grooves 701. During the process of withdrawing the plunger body 1 from the cylinder cavity, the guiding cut surface 504 at the bottom of the first baffle ring 501 and the second baffle ring 502 is more helpful to push the hydraulic oil into the oil inlet hole 11. The outer diameter of the first baffle ring 501 is larger than the outer diameter of the second baffle ring 502, so that the hydraulic oil can be pushed into the two circles of oil inlet holes 11, and the second curved surface 503 on the first baffle ring 501 and the second baffle ring 502 reduces the resistance encountered by the first baffle ring 501 and the second baffle ring 502 in the process of the plunger body 1 entering the cylinder cavity. The spiral oil groove 8 can not only ensure the strength of the plunger and avoid affecting its bearing capacity, but also give full play to its correction and lubrication functions, thereby improving the stability of the plunger body 1 during the reciprocating motion.

[0045] like Figure 1-Figure 5 and Figure 7-Figure 8 As shown, the top and bottom ends of the outer side of the plunger body 1 of this embodiment are both provided with anti-leakage components 7, and the anti-leakage component 7 includes two groups of annular grooves 701 on the outer side of the plunger body 1, and the inside of the two groups of annular grooves 701 are both provided with guide rings 702, the bottom group of annular grooves 701 is located below the limit ring 401, and the second annular groove 301 is located above the oil inlet hole 11, the two groups of annular grooves 701 are both located above the second annular groove 301, and the first annular groove 201 is located above the annular groove 701, and the two groups of guide rings 702 are used to play a supporting and guiding role to prevent the plunger body 1 from direct contact and friction with the inner wall of the cylinder during movement, thereby protecting the cylinder and the outer side of the plunger body 1 from damage due to friction.

[0046] The working principle of this embodiment is as follows: when the plunger body 1 moves outward from the plunger pump cylinder cavity, the head end of the plunger body 1 and the cavity are in a negative pressure state, forcing the cone block 604 to no longer block the oil passage holes 405 on a group of cylinders 402 at the head end, and the movable rod 601 slides inside the two groups of sliding holes 406. The blocking ball 602 also does not contact the inner wall of the funnel groove 10, and the second return spring 603 is shortened by force and stores elastic potential energy. At this time, the interior of the plunger body 1 is also in a negative pressure state, forcing the hydraulic oil to enter the interior of the plunger body 1 through the oil inlet hole 11 and the funnel groove 10 in turn, and then the hydraulic oil enters the cylinder cavity of the plunger body 1 through the oil passage holes 405, and part of the liquid The pressurized oil enters the spiral oil groove 8, and when the plunger body 1 moves into the plunger pump cylinder cavity, the conical block 604 automatically blocks all the oil through holes 405 on the top group of cylinders 402, pushing the hydraulic oil in the cylinder cavity to be squeezed out, and the blocking ball 602 also presses tightly against the inner wall of the funnel groove 10. When the plunger body 1 is fully inserted into the cylinder cavity, the movable ring 302 presses against the cylinder outside the cavity, and the cylinder outside the cavity pushes the movable ring 302 to slide on the second annular groove 301. The first return spring 303 is shortened by force and stores elastic potential energy, and is transmitted and corrected in the process of the plunger body 1 fully entering the cavity. The plunger body 1 is highly concentric during operation and does not produce eccentric wear.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A deviation-correcting plunger structure, comprising a plunger body (1) as a mounting carrier, a funnel groove (10) provided at the rear end of the interior of the plunger body (1), a plunger ball head (9) installed at the rear end of the plunger body (1), and a plurality of groups of oil inlet holes (11) communicating with the inner bottom of the plunger body (1) provided at the bottom end of the outer side of the plunger body (1), characterized in that: The head end of the outer side of the plunger body (1) is provided with an anti-scratch wall component (2), the bottom end of the outer side of the plunger body (1) is provided with a correction component (3), the interior of the plunger body (1) is provided with a flow guide component (4), the interior of the plunger body (1) is provided with an anti-backflow component (6) that cooperates with the flow guide component (4), the bottom end of the outer side of the plunger body (1) is provided with an oil injection auxiliary component (5), and the top and bottom ends of the outer side of the plunger body (1) are both provided with anti-leakage components (7); The flow guide assembly (4) includes a limiting ring (401) installed at the bottom of the plunger body (1), a connecting tube (403) is installed inside the plunger body (1), and a cylinder (402) is symmetrically installed on the top and bottom of the connecting tube (403), and the top and bottom of the cylinder (402) are both provided with spherical grooves (404), the cylinder (402) is evenly provided with oil passage holes (405) at non-center positions, and the cylinder (402) is provided with a sliding hole (406) at the center position. The limiting ring (401) is located above the movable ring (302); The anti-backflow assembly (6) includes a movable rod (601) inserted into two groups of sliding through holes (406), the bottom end of the movable rod (601) is installed with a blocking ball (602) that cooperates with the funnel groove (10), the bottom end of the outer side of the movable rod (601) is sleeved with a second return spring (603), and the top end of the second return spring (603) is fixedly connected to the bottom of a group of cylinders (402) at the bottom, the top end of the movable rod (601) is installed with a truncated cone block (604) that is compatible with the spherical groove (404), and the top of the truncated cone block (604) is provided with a truncated cone groove (605).

2. The deviation-correcting plunger structure according to claim 1, characterized in that: The anti-scratch wall assembly (2) comprises a first annular groove (201) provided at the outer head end of the plunger body (1), a first arcuate surface (202) being provided at the top end of the outer side of the first annular groove (201), ball grooves (203) being evenly provided on the outer side of the first annular groove (201), and balls (204) being provided inside the ball grooves (203).

3. The deviation-correcting plunger structure according to claim 2, characterized in that: The deviation correction component (3) comprises a second annular groove (301) provided at the bottom end of the outer side of the plunger body (1); a movable ring (302) is sleeved on one end of the outer side of the second annular groove (301) close to the first annular groove (201); a first return spring (303) is sleeved on the outer side of the second annular groove (301); and two ends of the first return spring (303) are fixedly connected to the bottom of the second annular groove (301) and the bottom of the movable ring (302), respectively.

4. The deviation-correcting plunger structure according to claim 1, characterized in that: The oil injection auxiliary component (5) comprises a first retaining ring (501) and a second retaining ring (502) located at the bottom end of the outer side of the plunger body (1); the first retaining ring (501) and the second retaining ring (502) are arranged between a plurality of groups of oil inlet holes (11); the first retaining ring (501) is located above the second retaining ring (502); the edges of the tops of the first retaining ring (501) and the second retaining ring (502) are both provided with a second arcuate surface (503); the bottoms of the inner sides of the first retaining ring (501) and the second retaining ring (502) are both provided with a guide cut surface (504); the outer diameter of the first retaining ring (501) is larger than the outer diameter of the second retaining ring (502).

5. The deviation-correcting plunger structure according to claim 3, characterized in that: The anti-leakage assembly (7) comprises two groups of annular grooves (701) on the outside of the plunger body (1), and guide rings (702) are provided inside the two groups of annular grooves (701), and the bottom group of annular grooves (701) is located below the limiting ring (401).

6. The deviation-correcting plunger structure according to claim 5, characterized in that: The second annular groove (301) is located above the oil inlet hole (11), the two groups of annular grooves (701) are both located above the second annular groove (301), and the first annular groove (201) is located above the annular groove (701).

7. The deviation-correcting plunger structure according to claim 5, characterized in that: The surface of the plunger body (1) is evenly provided with spiral oil grooves (8), the groove depth of the spiral oil grooves (8) is between 1-2 mm, the groove width of the spiral oil grooves (8) is between 2-3 mm, and the spiral oil grooves (8) are located between the two groups of annular grooves (701).

8. The deviation-correcting plunger structure according to claim 1, characterized in that: The oil inlet holes (11) are provided in two circles, and the two circles of oil inlet holes (11) are staggeredly distributed at the bottom of the outer side of the plunger body (1). The oil inlet holes (11) are opened on the plunger body (1) in an inclined manner from the outside to the inside.

Images