A high-precision ceramic metering pump plunger end polishing device

Abstract

The utility model relates to high accuracy ceramic metering pump plunger technical field, and disclose a kind of high accuracy ceramic metering pump plunger end polishing device, including workbench, the workbench top is provided with through-hole, the inner wall top of workbench is provided with clamping fixed mechanism. First servo motor drives first gear in clamping fixed mechanism, drives rotating cylinder to rotate, and the meshing transmission of cooperation inner tooth ring and second gear is realized, and the synchronous action of four eccentric wheels is realized. This design can be all-around, even clamping fixed to ceramic metering pump plunger, avoid the deformation or displacement problem of plunger caused by uneven stress that local force of traditional clamping mode can appear, ensure the stability of plunger position in polishing process, to provide basic guarantee for high accuracy polishing, shaft top rotary connection is in the inner wall top of workbench, both strengthen the stability of shaft self rotation, and more stable clamping to plunger is realized through stable eccentric wheel.

Description

Technical Field

[0001] This utility model relates to the field of high-precision ceramic metering pump plunger technology, specifically a high-precision ceramic metering pump plunger end grinding device. Background Technology

[0002] In modern industrial production, ceramic metering pumps, with their excellent corrosion and wear resistance, are widely used in fields such as chemical, pharmaceutical, and food processing, where extremely high precision in fluid delivery is required. As a core component, the plunger in a ceramic metering pump directly affects the pump's flow stability, sealing performance, and service life due to the precision of its end machining. High-precision plunger ends effectively reduce fluid leakage, ensure metering accuracy, lower maintenance costs and downtime, and are crucial for ensuring continuous industrial production and product quality.

[0003] Currently, the grinding of the plunger ends of ceramic metering pumps mainly employs traditional manual grinding or general-purpose grinding equipment. Manual grinding relies heavily on the operator's experience and skill level, resulting in low efficiency and difficulty in ensuring consistent grinding precision. Issues such as uneven grinding and dimensional deviations are common, failing to meet the production requirements of high-precision metering pumps. While general-purpose grinding equipment improves grinding efficiency to some extent, the lack of specialized clamping and grinding structures for the plunger ends of ceramic metering pumps makes it difficult to achieve precise positioning and efficient grinding of plungers of different specifications. During the grinding process, the plunger is prone to shaking and displacement, leading to decreased grinding precision. There is also a risk of plunger breakage due to uneven clamping force. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision ceramic metering pump plunger end grinding device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision ceramic metering pump plunger end grinding device, including a worktable, a through hole on the top of the worktable, a clamping and fixing mechanism on the top of the inner wall of the worktable, and a grinding mechanism on the top of the worktable near the back. The clamping and fixing mechanism includes a first servo motor, which is fixedly connected to the top right side of the inner wall of the worktable. A first gear is fixedly connected to the surface of the output shaft of the first servo motor. A fixing ring is fixedly connected to the top of the inner wall of the worktable. A T-shaped ring groove is formed at the bottom of the fixing ring. An I-shaped ring is rotatably connected to the inner wall of the T-shaped ring groove. A rotating cylinder is fixedly connected to the bottom of the I-shaped ring. An external gear ring is fixedly connected to the surface of the rotating cylinder near the bottom. An internal gear ring is rotatably connected to the inner wall of the rotating cylinder near the bottom. Four fixing plates are fixedly connected in a circular array near the bottom of the inner wall of the rotating cylinder. A rotating shaft is rotatably connected to the top of the four fixing plates. A second gear is fixedly connected to the surface of the rotating shaft near the bottom end. An eccentric wheel is fixedly connected to the surface of the rotating shaft near the top end.

[0006] Preferably, the first gear meshes with the outer gear ring, and the inner gear ring meshes with four second gears.

[0007] Preferably, the top ends of the four rotating shafts are rotatably connected to the top of the inner wall of the worktable, which makes the rotation of the shafts more stable and also makes the clamping and fixing of the plunger by the four eccentric wheels more stable.

[0008] Preferably, the grinding mechanism includes a fixed base, which is fixedly connected to the top of the worktable near the back. A fixed frame is fixedly connected to the top of the fixed base, and a second servo motor is fixedly connected to the top of the fixed frame. A lead screw is rotatably connected to the top of the fixed base, and limit rods are symmetrically fixedly connected to the top of the fixed base. A lifting block is threaded onto the surface of the lead screw, and a third servo motor is fixedly connected to the top of the lifting block near the front. A grinding disc is fixedly connected to the output end of the third servo motor.

[0009] Preferably, the top end of the limiting rod is fixedly connected to the top of the inner wall of the fixing frame, and the output end of the second servo motor is fixedly connected to the top end of the lead screw.

[0010] Preferably, the top of the lifting block has holes on the left and right sides near the back side that match the limiting rod, and the lifting block is slidably connected to the surface of the limiting rod through the holes. The limiting rod limits the lifting block, so that the lifting block moves up and down as the lead screw rotates.

[0011] Preferably, the grinding disc is on the same vertical line as the through hole, which makes it easier for the grinding disc to better grind the end of the plunger.

[0012] Compared with the prior art, this utility model provides a high-precision ceramic metering pump plunger end grinding device, which has the following beneficial effects: 1. This high-precision ceramic metering pump plunger end grinding device features a clamping and fixing mechanism where a first servo motor drives a first gear, which in turn rotates a rotating cylinder. This, combined with the meshing transmission between the internal gear ring and the second gear, enables the synchronous movement of four eccentric wheels. This design provides comprehensive and uniform clamping and fixing of the ceramic metering pump plunger, avoiding the plunger deformation or displacement problems caused by uneven localized force in traditional clamping methods. It ensures the stability of the plunger position during grinding, thus providing a fundamental guarantee for high-precision grinding. The top of the rotating shaft is rotatably connected to the top of the inner wall of the worktable, enhancing the stability of the shaft's rotation and providing a more secure clamping of the plunger through stable eccentric wheels. During grinding, stable clamping effectively reduces grinding errors caused by plunger movement, improves grinding accuracy and quality, extends the plunger's service life, and ensures the metering accuracy of the ceramic metering pump.

[0013] 2. This high-precision ceramic metering pump plunger end grinding device features a second servo motor driving a lead screw to rotate, causing a lifting block to move up and down along a limit rod, achieving precise vertical positioning of the grinding disc. A third servo motor drives the grinding disc to rotate at high speed, with the speed adjustable according to different grinding requirements. Simultaneously, the design of the grinding disc and the through hole being on the same vertical line ensures that the grinding disc can be precisely aligned with the plunger end for grinding. In this way, the device can flexibly adjust the grinding position and intensity to meet the high-precision grinding requirements of ceramic metering pump plunger ends of different specifications and shapes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a three-dimensional structural schematic diagram of the present utility model; Figure 2 This is a front sectional perspective view of the workbench structure of this utility model; Figure 3 This is a three-dimensional schematic diagram of the fixing ring and rotating cylinder of this utility model. Figure 4 This is a front sectional perspective view of the fixing ring of this utility model. Figure 5 This is a three-dimensional cross-sectional view of the surface of the fixing cylinder of this utility model. Figure 6 This is a three-dimensional schematic diagram of the fixing ring and the second gear of this utility model. Figure 7 This is a three-dimensional schematic diagram of the grinding mechanism of this utility model.

[0015] In the diagram: 1. Workbench; 2. Through hole; 3. Clamping and fixing mechanism; 31. First servo motor; 32. First gear; 33. Fixing ring; 34. T-shaped ring groove; 35. I-shaped ring; 36. Rotating cylinder; 37. External gear ring; 38. Internal gear ring; 39. Fixing plate; 311. Rotating shaft; 312. Second gear; 313. Eccentric wheel; 4. Grinding mechanism; 41. Fixing seat; 42. Fixing frame; 43. Second servo motor; 44. Lead screw; 45. Limiting rod; 46. Lifting block; 47. Third servo motor; 48. Grinding disc. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] This utility model provides the following technical solution: Example 1 Please see Figure 1-6 This utility model provides a technical solution: a high-precision ceramic metering pump plunger end grinding device, including a worktable 1, a through hole 2 on the top of the worktable 1, a clamping and fixing mechanism 3 on the top of the inner wall of the worktable 1, and a grinding mechanism 4 on the top of the worktable 1 near the back. The clamping and fixing mechanism 3 includes a first servo motor 31, which is fixedly connected to the top right side of the inner wall of the worktable 1. A first gear 32 is fixedly connected to the surface of the output shaft of the first servo motor 31. A fixing ring 33 is fixedly connected to the top of the inner wall of the worktable 1. A T-shaped ring groove 34 is opened at the bottom of the fixing ring 33. An I-shaped ring 35 is rotatably connected to the inner wall of the T-shaped ring groove 34. A rotating cylinder 36 is fixedly connected to the bottom of the I-shaped ring 35. An external toothed ring 37 is fixedly connected to the surface of the rotating cylinder 36 near the bottom. An internal toothed ring 38 is rotatably connected to the inner wall of the rotating cylinder 36 near the bottom. Four fixing plates 39 are fixedly connected in a circular array near the bottom of the inner wall of the rotating cylinder 36. A rotating shaft 311 is rotatably connected to the top of the four fixing plates 39. A second gear 312 is fixedly connected to the surface of the rotating shaft 311 near the bottom end. An eccentric wheel 313 is fixedly connected to the surface of the rotating shaft 311 near the top end.

[0019] The first gear 32 meshes with the outer gear ring 37, and the inner gear ring 38 meshes with the four second gears 312.

[0020] The top ends of the four rotating shafts 311 are rotatably connected to the top of the inner wall of the worktable 1, which makes the rotation of the rotating shafts 311 more stable and also makes the clamping and fixing of the plunger by the four eccentric wheels 313 more stable.

[0021] Example 2 Please see Figure 7 Furthermore, based on Example 1, a polishing mechanism 4 was obtained.

[0022] The grinding mechanism 4 includes a fixed base 41, which is fixedly connected to the top of the worktable 1 near the back. A fixed frame 42 is fixedly connected to the top of the fixed base 41. A second servo motor 43 is fixedly connected to the top of the fixed frame 42. A lead screw 44 is rotatably connected to the top of the fixed base 41. Limiting rods 45 are symmetrically fixedly connected to the top of the fixed base 41. A lifting block 46 is threadedly connected to the surface of the lead screw 44. A third servo motor 47 is fixedly connected to the top of the lifting block 46 near the front. A grinding disc 48 is fixedly connected to the output end of the third servo motor 47.

[0023] The top end of the limiting rod 45 is fixedly connected to the top of the inner wall of the fixing frame 42, and the output end of the second servo motor 43 is fixedly connected to the top end of the lead screw 44.

[0024] The top of the lifting block 46 has holes on the left and right sides near the back side that match the limiting rod 45. The lifting block 46 is slidably connected to the surface of the limiting rod 45 through the holes. The limiting rod 45 limits the lifting block 46, so that the lifting block 46 moves up and down with the rotation of the lead screw 44.

[0025] The grinding disc 48 is on the same vertical line as the through hole 2, which makes it easier for the grinding disc 48 to better grind the end of the plunger.

[0026] In actual operation, when this device is used, the ceramic metering pump plunger is placed in the rotating cylinder 36 through the through hole 2 at the top of the workbench 1. The first servo motor 31 is started, and its output shaft drives the first gear 32 to rotate. Since the first gear 32 meshes with the outer gear ring 37 on the surface of the rotating cylinder 36, it drives the rotating cylinder 36 to rotate. The rotation of the rotating cylinder 36 drives the inner gear ring 38 to rotate synchronously. The inner gear ring 38 meshes with the second gear 312 near the bottom of the surface of the four rotating shafts 311, so that the four rotating shafts 311 rotate simultaneously. The top of the rotating shaft 311 is rotatably connected to the top of the inner wall of the workbench 1 to ensure rotational stability. The eccentric wheel 313 on its surface rotates with the rotating shaft 311. Utilizing the eccentricity of the eccentric wheel 313, it gradually approaches and clamps the plunger from four directions. The four eccentric wheels 313 move synchronously to achieve uniform and stable clamping of the plunger, preventing the plunger from shifting or shaking during the grinding process. Once the plunger is clamped and fixed, the second servo motor 43 is activated, and its output drives the lead screw 44 to rotate. Because the lifting block 46 is threadedly connected to the lead screw 44, and the limiting rod 45 limits the lifting block 46 (the hole at the top of the lifting block 46 engages with the limiting rod 45), the lifting block 46 can only slide up and down along the limiting rod 45. The rotation of the lead screw 44 drives the lifting block 46 to move up and down along the limiting rod 45, thereby adjusting the height of the grinding disc 48 to align it with the end of the plunger. Then, the third servo motor 47 is activated, and its output drives the grinding disc 48 to rotate at high speed, grinding the end of the plunger. During the grinding process, the height of the grinding disc 48 can be adjusted by controlling the second servo motor 43, and the rotation speed of the grinding disc 48 can be adjusted by controlling the third servo motor 47, according to actual grinding requirements, to achieve the best grinding effect.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A high-precision ceramic metering pump plunger end grinding device, comprising a worktable (1), characterized in that: The workbench (1) has a through hole (2) at the top, a clamping and fixing mechanism (3) is provided on the top of the inner wall of the workbench (1), and a grinding mechanism (4) is provided on the top of the workbench (1) near the back. The clamping and fixing mechanism (3) includes a first servo motor (31), which is fixedly connected to the top right side of the inner wall of the worktable (1). A first gear (32) is fixedly connected to the surface of the output shaft of the first servo motor (31). A fixing ring (33) is fixedly connected to the top of the inner wall of the worktable (1). A T-shaped ring groove (34) is opened at the bottom of the fixing ring (33). An I-shaped ring (35) is rotatably connected to the inner wall of the T-shaped ring groove (34). A rotating cylinder (35) is fixedly connected to the bottom of the I-shaped ring (35). 6) An external gear ring (37) is fixedly connected to the surface of the rotating cylinder (36) near the bottom. An internal gear ring (38) is rotatably connected to the inner wall of the rotating cylinder (36) near the bottom. Four fixed plates (39) are fixedly connected to the inner wall of the rotating cylinder (36) in a circular array near the bottom. A rotating shaft (311) is rotatably connected to the top of the four fixed plates (39). A second gear (312) is fixedly connected to the surface of the rotating shaft (311) near the bottom end. An eccentric wheel (313) is fixedly connected to the surface of the rotating shaft (311) near the top end.

2. The high-precision ceramic metering pump plunger end grinding device according to claim 1, characterized in that: The first gear (32) meshes with the outer gear ring (37), and the inner gear ring (38) meshes with four second gears (312).

3. The high-precision ceramic metering pump plunger end grinding device according to claim 1, characterized in that: The top ends of the four rotating shafts (311) are rotatably connected to the top of the inner wall of the worktable (1), which makes the rotation of the rotating shafts (311) more stable and also makes the four eccentric wheels (313) clamp and fix the plunger more stably.

4. The high-precision ceramic metering pump plunger end grinding device according to claim 1, characterized in that: The grinding mechanism (4) includes a fixed seat (41), which is fixedly connected to the top of the workbench (1) near the back. A fixed frame (42) is fixedly connected to the top of the fixed seat (41), and a second servo motor (43) is fixedly connected to the top of the fixed frame (42). A lead screw (44) is rotatably connected to the top of the fixed seat (41). Limiting rods (45) are fixedly connected to the top of the fixed seat (41) symmetrically on the left and right. A lifting block (46) is threaded onto the surface of the lead screw (44). A third servo motor (47) is fixedly connected to the top of the lifting block (46) near the front. A grinding disc (48) is fixedly connected to the output end of the third servo motor (47).

5. The high-precision ceramic metering pump plunger end grinding device according to claim 4, characterized in that: The top end of the limiting rod (45) is fixedly connected to the top of the inner wall of the fixing frame (42), and the output end of the second servo motor (43) is fixedly connected to the top end of the lead screw (44).

6. The high-precision ceramic metering pump plunger end grinding device according to claim 4, characterized in that: The top of the lifting block (46) is provided with holes on the left and right sides near the back side that match the limiting rod (45). The lifting block (46) is slidably connected to the surface of the limiting rod (45) through the holes. The limiting rod (45) limits the lifting block (46) so that the lifting block (46) moves up and down with the rotation of the lead screw (44).

7. The high-precision ceramic metering pump plunger end grinding device according to claim 4, characterized in that: The grinding disc (48) is on the same vertical line as the through hole (2), which makes it easier for the grinding disc (48) to better grind the end of the plunger.

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