Quick-release metering pump

Abstract

The utility model discloses a quick detachable metering pump, including pump body still includes drive unit, drive unit includes: fixed plate is used for with one end of pump body is connected, fixed plate is separately spaced and is provided with mounting plate A and mounting plate B, mounting plate C, the upper and lower two ends of mounting plate C are connected with the other end of mounting plate A and mounting plate B respectively, eccentric wheel axle, its both ends are rotatably connected with mounting plate A and mounting plate B, connecting rod, one end of its is sheathed on eccentric wheel axle, and its other end passes through fixed plate and is connected with the inside of pump body, and the staff can according to the demand separately disassembles corresponding board piece when maintaining, only dismounts mounting plate C and can check the part state in the internal cavity, only dismounts mounting plate A or mounting plate B and can replace the bearing between eccentric wheel axle and mounting plate, need not to disassemble whole drive unit or pump body, and the operation space is sufficient, and the repair step is reduced greatly, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of metering pump technology, and in particular relates to a quick-release metering pump. Background Technology

[0002] When industrial large washing machines are in operation, clean water and detergent are mixed and transported in pipelines. The flow rate is measured by a metering pump to ensure stable washing results and accurate detergent dosage.

[0003] The power drive unit of existing metering pumps typically uses a motor to drive a gear to rotate, which in turn drives an eccentric wheel to rotate. The eccentric wheel, in conjunction with a connecting rod, converts the rotational motion of the motor drive shaft into the linear motion of the plunger inside the pump body, thereby realizing the metering of fluid intake and discharge.

[0004] However, in the existing technology, the housing used to house gears, eccentric wheels and connecting rod ends is mostly a one-piece molded structure. This structure has obvious defects: during equipment disassembly and repair (such as replacement of worn internal parts) or installation and debugging, the entire housing needs to be disassembled. The operating space is limited, and the disassembly steps are cumbersome. This not only increases the labor intensity of the staff, but also affects the efficiency of disassembly, repair and installation. Summary of the Invention

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick-release metering pump, including a pump body and a drive unit, wherein the drive unit includes: A fixing plate is used to connect to one end of the pump body, and mounting plate A and mounting plate B are respectively provided at intervals on the fixing plate; Mounting plate C, the upper and lower ends of which are respectively connected to the other ends of mounting plate A and mounting plate B; An eccentric wheel shaft, whose two ends are rotatably connected to mounting plate A and mounting plate B respectively; The connecting rod has one end sleeved on the eccentric wheel shaft and the other end passing through the fixed plate and connected to the inside of the pump body; The drive motor is fixedly mounted on the mounting plate B and is used to drive the eccentric wheel shaft to rotate. The fixed plate, mounting plate A, mounting plate B and mounting plate C form a cavity, one end of the connecting rod and the deflection wheel axle are located in the cavity, and the fixed plate, mounting plate A, mounting plate B and mounting plate C are detachably connected.

[0006] Furthermore, it also includes: The first tenon is provided at one end of both the mounting plate A and the mounting plate B; The fixing plate has a first mortise corresponding to the two first tenons; The mounting plate C has a second tenon at both its upper and lower ends; The second mortise is provided at the other end of both mounting plate A and mounting plate B, corresponding to the second tenon. The fixing plate, mounting plate A, mounting plate B and mounting plate C are fixedly connected by screws.

[0007] Furthermore, the first tenon and the second tenon are trapezoidal tenons, and the first mortise and the second mortise are trapezoidal mortises adapted to the first tenon and the second tenon. The first tenon is slidably disposed in the first mortise, and the second tenon is located in the second mortise.

[0008] Furthermore, the second tenon is a cuboid insert, and the second mortise is a matching slot.

[0009] Furthermore, it also includes: The mounting plate C is fixedly provided with buckles at both the top and bottom ends; Slots are provided at the other ends of both mounting plate A and mounting plate B; Wherein, the second tenon is a cylindrical guide post, the second mortise is a matching guide groove, and when the second tenon is inserted into the second mortise, the buckle is located in the groove.

[0010] Furthermore, the upper and lower ends of the mounting plate C protrude from the mounting plate A and mounting plate B, respectively.

[0011] Furthermore, the second tenon and the second mortise are interference fit.

[0012] The beneficial effects of this utility model are as follows: 1. During maintenance, staff can disassemble the corresponding plates individually as needed. Only the mounting plate C needs to be removed to check the condition of the internal parts of the cavity. Only the mounting plate A or mounting plate B needs to be removed to replace the bearing between the deflector shaft and the mounting plate. There is no need to disassemble the entire drive unit or pump body. The operating space is sufficient, which greatly reduces the disassembly and repair steps and reduces labor intensity. It is especially suitable for scenarios such as large industrial washing machines that require frequent maintenance.

[0013] 2. During installation, staff do not need to repeatedly adjust the position of the panels. They only need to insert the first tenon into the first mortise and the second tenon into the second mortise to complete the precise positioning, and then fix it with screws, which greatly improves the installation efficiency. When disassembling, they only need to unscrew the screws to separate the panels, which is convenient and further optimizes the disassembly and assembly experience.

[0014] 3. The trapezoidal structure enhances the connection strength and anti-detachment capability, while the sliding assembly method simplifies the installation operation in narrow spaces, making it easy to disassemble and assemble the drive unit even in complex working conditions, thus expanding its application range. In addition, the processing difficulty of the trapezoidal structure is similar to that of the rectangular structure, without increasing production costs, thus balancing performance and economy. Furthermore, the trapezoidal structure makes it less likely to come loose during insertion.

[0015] 4. When assembling mounting plate C, the worker first inserts the first tenon into the first mortise, pushes mounting plate C under the guidance until the buckle is engaged in the slot to achieve initial fixation, and then completes the final fixation with screws. No additional positioning tools are required. When disassembling, first unscrew the screws, apply force to mounting plate C to remove mounting plate C. The operation is convenient and further optimizes the installation experience. It is especially suitable for assembly scenarios where space is narrow and it is inconvenient to hold and position the plate. Attached Figure Description

[0016] Appendix Figure 1 This is a structural diagram of the present invention; Appendix Figure 2 This is a side view of the present invention; Appendix Figure 3 This is an exploded view of the drive unit; Appendix Figure 4 The structural diagram of the shell part when the second tenon is a cuboid insert; Appendix Figure 5 An exploded view of the shell portion when the second tenon is a cuboid insert; Appendix Figure 6 Construction diagram of the shell portion when the second tenon is a guide post; Appendix Figure 7 An exploded view of the shell section when the second tenon serves as a guide post; Appendix Figure 8 Construction diagram of mounting plate C when the second tenon is a guide post; Explanation of reference numerals in the attached drawings: 1. Pump body, 2. Fixing plate, 3. Mounting plate A, 4. Mounting plate B, 5. Mounting plate C, 6. Eccentric wheel shaft, 7. Connecting rod, 8. Drive motor, 9. First tenon, 10. First mortise, 11. Second tenon, 12. Second mortise, 13. Snap fastener, 14. Slot. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. In the description of this application, it should be noted that the terminology used herein is only for describing specific implementations and is not intended to limit the exemplary implementations according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings indicate similar items, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. Example 1

[0018] This embodiment provides a quick-release metering pump, including a pump body 1 and a drive unit, the drive unit including: A fixing plate 2 is used to connect to one end of the pump body 1. Mounting plate A3 and mounting plate B4 are respectively provided on the fixing plate 2 at intervals. Mounting plate C5, the upper and lower ends of which are respectively connected to the other ends of mounting plate A3 and mounting plate B4; The eccentric wheel shaft 6 is rotatably connected at both ends to mounting plate A3 and mounting plate B4, respectively. The connecting rod 7 has one end sleeved on the eccentric wheel shaft 6, and the other end passes through the fixed plate 2 and is connected to the inside of the pump body 1. The drive motor 8 is fixedly mounted on the mounting plate B4 and is used to drive the eccentric wheel shaft 6 to rotate. The fixed plate 2, mounting plate A3, mounting plate B4 and mounting plate C5 form a cavity, one end of the connecting rod 7 and the deflection wheel axle are located in the cavity, and the fixed plate 2, mounting plate A3, mounting plate B4 and mounting plate C5 are detachably connected.

[0019] The splicing surfaces of the fixing plate 2, mounting plate A3, mounting plate B4 and mounting plate C5 are all flat, and the splicing surfaces of adjacent plates are perpendicular to each other.

[0020] The working principle of pump body 1 is existing technology and will not be elaborated on here.

[0021] During installation, first fix the mounting plate B4 to the fixing plate 2, then insert the eccentric wheel shaft 6 so that one end of the eccentric wheel shaft 6 is rotatably connected to the mounting plate B4, and install the drive motor 8 so that the output shaft of the drive motor 8 forms a transmission with the eccentric wheel shaft 6. Then, slide the connecting rod 7 onto the eccentric wheel shaft 6 so that one end of the connecting rod 7 is located in the eccentric wheel part of the eccentric wheel shaft 6, and then rotatably connect the other end of the connecting rod 7 to the plunger in the pump body 1 to complete the installation of the connecting rod 7. Finally, fix the fixing plate 2 to the pump body 1 with screws.

[0022] Next, while fixing the mounting plate A3 to the fixed plate 2, the other end of the eccentric wheel shaft 6 is rotatably connected to the mounting plate A3. Then, the mounting plate C5 is fixedly connected to the other end of the mounting plate A3 and the mounting plate B4, so that a stable structure is formed between the fixed plate 2, the mounting plate A3, the mounting plate B4 and the mounting plate C5.

[0023] In this technical solution, by dividing the driving unit of the metering pump into four detachable plates, namely the fixed plate 2, the mounting plate A, the mounting plate B4, and the mounting plate C5, the structural limitations of the traditional one-piece molded shell are broken, and the problem of needing to disassemble the whole unit during disassembly and repair is solved. The cavity formed between the fixed plate 2, mounting plate A3, mounting plate B4 and mounting plate C5 can effectively protect the internal moving parts such as the eccentric wheel shaft 6 and connecting rod 7, and extend the service life of the parts; the design of vertical splicing of adjacent plates not only ensures structural stability, but also facilitates processing and manufacturing, and reduces production difficulty.

[0024] With this structural design, staff can disassemble the corresponding plates individually as needed during maintenance. Only the mounting plate C5 needs to be removed to check the condition of the internal parts of the cavity, and only the mounting plate A3 or mounting plate B4 needs to be removed to replace the bearing between the deflector shaft and the mounting plate. There is no need to disassemble the entire drive unit or pump body 1. The operating space is sufficient, which greatly reduces the disassembly and repair steps and reduces labor intensity. It is especially suitable for scenarios such as large industrial washing machines that require frequent maintenance. Example 2

[0025] This embodiment provides a quick-release metering pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] Furthermore, it also includes: The first tenon 9 is provided at one end of both the mounting plate A3 and the mounting plate B4. The tenon can be integrally formed with the mounting plate, thereby improving the structural strength. First mortise 10: The fixing plate 2 is provided with first mortise 10 corresponding to the two first tenons 9; The second tenon 11 is provided at both the upper and lower ends of the mounting plate C5; The second mortise 12 is provided at the other end of both the mounting plate A3 and the mounting plate B4, corresponding to the second tenon 11. The fixing plate 2, mounting plate A3, mounting plate B4 and mounting plate C5 are fixedly connected by screws.

[0027] The fixing plate 2 has a through hole that is connected to the first mortise 10. The first tenon 9 has a threaded hole. When the first tenon 9 is installed so that the threaded hole corresponds to the through hole, it can be fixedly connected by screws. The second tenon 11 and the second mortise 12 can also be fixedly connected in this way, or the second tenon 11 and the second mortise 12 can directly form an interference fit.

[0028] In this technical solution, the tenon and mortise fit-in structure provides a precise positioning reference for each panel, avoiding left-right offset or front-back misalignment during installation, and reducing wear of parts or abnormal noise during operation caused by assembly deviations. The screw fixing method provides sufficient restraint, which can prevent the plate from loosening even when the drive motor 8 is vibrating, thus ensuring the long-term stable operation of the metering pump. Meanwhile, the combination of mortise and tenon joints and screw fixing takes into account both positioning accuracy and connection strength, thus improving the overall reliability of the drive unit.

[0029] With this structural design, workers do not need to repeatedly adjust the position of the panels during installation. They only need to insert the first tenon 9 into the first mortise 10 and the second tenon 11 into the second mortise 12 to complete the precise positioning, and then fix it with screws, which greatly improves the installation efficiency. When disassembling, only the screws need to be unscrewed to separate the panels, which is convenient and further optimizes the disassembly and assembly experience. Example 3

[0030] This embodiment provides a quick-release metering pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0031] Furthermore, the first tenon 9 and the second tenon 11 are trapezoidal tenons, and the first mortise 10 and the second mortise 12 are trapezoidal mortises adapted to the first tenon 9 and the second tenon 11. The first tenon 9 is slidably disposed in the first mortise 10, and the second tenon 11 is located in the second mortise 12.

[0032] As attached Figure 1-3 As shown, the width of the trapezoidal tenon gradually decreases from the end furthest from the end of the board to the end closest to the end of the board, the width of the trapezoidal mortise gradually decreases from the open end to the bottom, and the bevel of the trapezoidal tenon fits into the bevel of the trapezoidal mortise.

[0033] The first tenon 9 is slidably set in the first mortise 10, which makes it convenient to slide the first tenon 9 in from both sides during installation. After sliding and inserting, the mounting plate A3 and mounting plate B4 can be perpendicular to the fixing plate 2 without the aid of external force, so that the mounting plate A3 and mounting plate B4 can be quickly assembled with the fixing plate 2.

[0034] In this technical solution, the trapezoidal tenon and the beveled surface of the mortise can effectively resist the tensile force of the plate in the direction perpendicular to the splicing surface, prevent the tenon from coming out of the mortise during installation, and improve the structural stability. At the same time, the inclined surface can distribute the locally concentrated force to the entire inclined surface, reduce stress concentration at the connection point, and extend the service life of the plate.

[0035] This structural design enhances connection strength and anti-detachment capability through the trapezoidal structure, while the sliding assembly method simplifies installation operations in narrow spaces, making it easy to disassemble and assemble the drive unit even in complex working conditions, thus broadening its applicability. In addition, the processing difficulty of the trapezoidal structure is similar to that of the rectangular structure, without increasing production costs, thus balancing performance and economy. Furthermore, the trapezoidal structure makes it less likely to come loose during insertion. Example 4

[0036] This embodiment provides a quick-release metering pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0037] Furthermore, the second tenon 11 can be a cuboid insert, and the second mortise 12 is a matching slot.

[0038] The slots are cut through the mounting plates A3 and B4 from top to bottom.

[0039] As attached Figure 4-5 As shown, in this technical solution, mounting plate A3, mounting plate B4, and mounting plate C5 can have a certain deformation capacity. After mounting plate A3 and mounting plate B4 are fixedly connected to fixing plate 2, the other ends of mounting plate A3 and mounting plate B4 can be applied outward at intervals to slightly deform and open the other ends of mounting plate A3 and mounting plate B4, so that mounting plate C5 can be inserted, and the upper and lower ends of mounting plate C5 are respectively inserted into the other ends of mounting plate A3 and mounting plate B4.

[0040] Compared with embodiment 3, this method makes it less likely for mounting plate C5 to detach from mounting plate A3 and the other end of mounting plate B4.

[0041] This structural design makes it less likely for mounting plate C5 to detach from the other end of mounting plate A3 and mounting plate B4. Example 5

[0042] This embodiment provides a quick-release metering pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] Furthermore, it also includes: Buckle 13, both the upper and lower ends of the mounting plate C5 are fixedly provided with buckles 13; Slot 14 is provided at the other end of both the mounting plate A3 and the mounting plate B4; Wherein, the second tenon 11 is a cylindrical guide post, the second mortise 12 is a matching guide groove, and when the second tenon 11 is inserted into the second mortise 12, the buckle 13 is located in the slot 14.

[0044] As attached Figure 6-8 As shown, after mounting plate A3 and mounting plate B4 are fixedly connected to fixing plate 2, the second tenon 11 guide post of mounting plate C5 is inserted into the second mortise 12 of mounting plate A3 and mounting plate B4. The cooperation between the second tenon 11 and the second mortise 12 guides the movement of mounting plate C5, and at the same time makes the buckle 13 align with the slot 14 and snap into place, so that mounting plate C5 is connected to mounting plate A3 and mounting plate B4. It can also be fixed by screws after the snap-in.

[0045] In this technical solution, the mating structure of the cylindrical guide post and the guide groove provides precise guidance for the assembly of the mounting plate C5, avoiding misalignment during assembly and ensuring that the buckle 13 can be accurately engaged in the slot 14; the engagement of the buckle 13 and the slot 14 can achieve the initial fixation of the mounting plate, eliminating the need for workers to hold the positioning, freeing their hands for screw fixing operations, and improving the convenience of assembly. Meanwhile, during disassembly, simply grasp the mounting plate C5 and apply force outward to release it from the slot 14; the operation is simple.

[0046] With this structural design, when assembling the mounting plate C5, the worker first inserts the first tenon 9 into the first mortise 10, and pushes the mounting plate C5 under the guidance until the buckle 13 is engaged in the slot 14 to achieve initial fixation. Then, the final fixation is completed by screws. No additional positioning tools are required. When disassembling, the screws are first unscrewed, and force is applied to the mounting plate C5 to remove it. The operation is convenient and further optimizes the installation experience. It is especially suitable for assembly scenarios where space is narrow and hand positioning is inconvenient. Example 6

[0047] This embodiment provides a quick-release metering pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0048] Furthermore, the upper and lower ends of the mounting plate C5 protrude from the mounting plate A3 and mounting plate B4, respectively.

[0049] With this structural design, the upper and lower ends of the mounting plate C5 protrude from the mounting plate A3 and mounting plate B4 respectively, making it easier to disassemble the mounting plate C5 by applying force through the protrusions at the upper and lower ends of the mounting plate C5. Example 7

[0050] This embodiment provides a quick-release metering pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0051] Furthermore, the second tenon 11 and the second mortise 12 are interference fit.

[0052] Through this structural design, a certain amount of interference provides a degree of self-locking during installation, allowing for fixation without the need for hand-held positioning.

[0053] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features described in this application specification can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A quick release metering pump comprising a pump body (1), characterized in that, It also includes a drive unit, which includes: A fixing plate (2) is used to connect to one end of the pump body (1). Mounting plate A (3) and mounting plate B (4) are respectively spaced apart on the fixing plate (2). Mounting plate C (5), the upper and lower ends of which are respectively connected to the other ends of mounting plate A (3) and mounting plate B (4); An eccentric wheel shaft (6) is rotatably connected at both ends to mounting plate A (3) and mounting plate B (4), respectively. The connecting rod (7) has one end sleeved on the eccentric wheel shaft (6) and the other end passing through the fixed plate (2) and connected to the inside of the pump body (1); The drive motor (8) is fixedly mounted on the mounting plate B (4) and is used to drive the eccentric wheel shaft (6) to rotate. Among them, the fixed plate (2), mounting plate A (3), mounting plate B (4) and mounting plate C (5) form a cavity, one end of the connecting rod (7) and the deflection wheel axle are located in the cavity, and the fixed plate (2), mounting plate A (3), mounting plate B (4) and mounting plate C (5) are detachably connected.

2. A quick disconnect metering pump according to claim 1 wherein, Also includes: The first tenon (9) is provided at one end of both the mounting plate A (3) and the mounting plate B (4); The first mortise (10) is provided on the fixing plate (2) corresponding to the two first tenons (9); The second tenon (11) is provided at both the upper and lower ends of the mounting plate C (5). The second mortise (12) is provided at the other end of the mounting plate A (3) and the mounting plate B (4) respectively, and the second mortise (12) is provided at the other end of the mounting plate A (3) and the mounting plate B (4) respectively, corresponding to the second tenon (11). The fixing plate (2), mounting plate A (3), mounting plate B (4) and mounting plate C (5) are fixedly connected by screws.

3. A quick disconnect metering pump according to claim 2 wherein: The first tenon (9) and the second tenon (11) are trapezoidal tenons, the first mortise (10) and the second mortise (12) are trapezoidal mortises that are adapted to the first tenon (9) and the second tenon (11), the first tenon (9) is slidably disposed in the first mortise (10), and the second tenon (11) is located in the second mortise (12).

4. A quick disconnect metering pump according to claim 2 wherein: The second tenon (11) is a cuboid insert, and the second mortise (12) is a matching slot.

5. A quick disconnect metering pump according to claim 2 wherein, Also includes: Buckle (13): Buckles (13) are fixedly provided at both the upper and lower ends of the mounting plate C (5); The other end of the mounting plate A (3) and the mounting plate B (4) are provided with slots (14); Wherein, the second tenon (11) is a cylindrical guide post, the second mortise (12) is a matching guide groove, and when the second tenon (11) is inserted into the second mortise (12), the buckle (13) is located in the slot (14).

6. A quick disconnect metering pump according to claim 5 wherein: The upper and lower ends of the mounting plate C (5) protrude from the mounting plate A (3) and mounting plate B (4) respectively.

7. A quick disconnect metering pump according to claim 3 or 4 or 6 wherein: The second tenon (11) is interference-fitted with the second mortise (12).

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