Anti-loose gear structure of gear pump

Abstract

The utility model relates to the technical field of gear pumps, and discloses an anti-loose gear structure of a gear pump, which adopts a gear synchronous auxiliary type working structure, two groups of synchronous gears which are meshed with each other are arranged at the rear parts of rotating shafts of two groups of pumping gears, and the two groups of pumping gears are synchronously rotated through meshing transmission of the two groups of synchronous gears. The two sets of pumping gears are meshed in a synchronous and stable working mode, working impact caused by starting and stopping of the pump body is avoided, the service life of the pumping gears in the pump body can be effectively prolonged, the working stability of the pump body is greatly improved, and the supporting end bases are used for supporting the rotating shaft structures of the pumping gears in a working mode. The two end sides of the pumping gear are provided with embedded ring seats, during working, the pumping gear is installed in an embedded supporting mode through the embedded ring seats and embedded ring grooves in the inner edge sides of the supporting end seats, and the rotary working stability of the synchronous gear can be effectively improved through the annular seats in embedded guiding fit with rotary supporting of the supporting end seats; and work looseness caused by offset rotation is avoided.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, specifically to an anti-loosening gear structure for a gear pump. Background Technology

[0002] Gear pumps are power tools for pumping oil. They are widely used due to their advantages in price, reliability, lifespan and self-priming ability. Gear pumps rely on the change in working space volume generated by the meshing of two or more gears sealed in the pump body to transport liquid media. They are commonly used pumping equipment in industrial production.

[0003] During operation, the two pumping gears inside the gear pump not only need to undertake the function of liquid transportation, but also need to maintain synchronous operation to ensure the normal operation of the pump. However, the driving of the pumping gears mostly adopts a single-sided power input working structure, using one set of pumping gears as the driving unit to mesh and drive the other set of pumping gears. Due to the meshing clearance between the two sets of pumping gears, the tooth groove structure of the pumping gears is easily damaged by wear during start-up and shutdown, resulting in loose gear meshing and affecting the normal operation of the pump body. Therefore, an anti-loosening gear structure for gear pumps is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an anti-loosening gear structure for a gear pump to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening gear structure for a gear pump, comprising a drive shaft, a driven shaft, a pumping gear, a support end seat, and a synchronous gear. The drive shaft and the driven shaft are rotatably mounted inside the cavity seat of the pump body in a parallel arrangement, supported by the support end seat. Two sets of meshing synchronous gears are respectively mounted at the rear of the drive shaft and the driven shaft.

[0006] Two sets of meshing pumping gears are respectively installed in the middle of the drive shaft and the driven shaft. Each end of the two sets of pumping gears is provided with a fitting ring seat. The pumping gears are rotatably fitted between the two sets of support end seats through the fitting ring seats.

[0007] Preferably, the above-mentioned support end seats are provided in pairs, and the support end seats are fixedly fitted and installed on both sides of the inside of the pump body cavity seat.

[0008] Preferably, the support end seat has a through mounting shaft hole in the middle, and a sealing bushing is installed inside the mounting shaft hole. The shaft columns of both the drive shaft and the driven shaft are mounted inside the mounting shaft hole by means of the sealing bushing to support the fixed shaft rotation.

[0009] Preferably, the two sets of pumping gears are fixedly installed in the middle of the drive shaft and the driven shaft, respectively, with the pumping gears located between the two sets of support end seats.

[0010] Preferably, the inner side of the support end seat is provided with a fitting ring groove, which is adapted to the fitting ring seat. After installation, the fitting ring seat and the fitting ring groove are slidably fitted together.

[0011] Preferably, the rear ends of both the drive shaft and the driven shaft are fixedly mounted with mounting posts, which movably pass through the end seat portion at the rear of the pump body and are located inside the sealing end cover provided at the rear of the pump body.

[0012] Preferably, the two sets of the aforementioned synchronous gears are fixedly installed on the upper part of the mounting column at the rear of the drive shaft and the driven shaft, respectively, and the two sets of synchronous gears are connected by tooth groove meshing.

[0013] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0014] This gear pump adopts a gear synchronous auxiliary working structure. Two sets of meshing synchronous gears are set at the rear of the shafts of the two sets of pumping gears. The meshing transmission of the two sets of synchronous gears realizes the synchronous rotation of the two sets of pumping gears. During operation, the two sets of pumping gears perform synchronous and stable meshing, avoiding the working impact caused by the start and stop of the pump body. This can effectively improve the service life of the pumping gears in the pump body and greatly improve the working stability of the pump body. Furthermore, the shaft structure of the pumping gear is supported by the support end seat, and the two ends of the pumping gear are provided with fitting ring seats. During operation, the pumping gear is fitted and supported by the fitting ring seat and the fitting ring groove on the inner side of the support end seat. The fitting and guiding of the ring seat, combined with the rotational support of the support end seat, can effectively improve the rotational working stability of the synchronous gears and avoid the loosening of the working gear due to offset rotation, thus greatly improving the working stability of the pump body. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the synchronous gear mounting structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the working installation structure of the present invention and the pump body;

[0018] Figure 3 This is a schematic diagram of the overall installation three-dimensional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall installation and disassembly structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the installation structure of the pumping gear and drive shaft of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Drive shaft; 2. Driven shaft; 3. Pumping gear; 4. Support end seat; 5. Synchronizing gear; 6. Fitting ring seat; 7. Fitting ring groove; 8. Sealing bushing; 9. Mounting column. Detailed Implementation

[0022] 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.

[0023] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0024] Example

[0025] Please see Figure 1-5 This utility model provides a technical solution: an anti-loosening gear structure for a gear pump, including a drive shaft 1, a driven shaft 2, a pumping gear 3, a support end seat 4, and a synchronizing gear 5. The drive shaft 1 and the driven shaft 2 are rotatably mounted in parallel arrangement inside the cavity of the pump body, supported by the support end seat 4. Specifically, the support end seat 4 is used for the rotational mounting support of the shaft structure, as shown in the attached figure. Figure 2 As shown, the support end seats 4 are arranged in pairs. The support end seats 4 are fixedly fitted and installed on both sides of the inside of the pump body cavity seat. In order to facilitate the connection and installation of the rotating shaft structure, as shown in the attached figure. Figure 4 As shown, a mounting shaft hole is provided through the middle of the support end seat 4. A sealing bushing 8 is installed inside the mounting shaft hole. The shaft columns of the drive shaft 1 and the driven shaft 2 are both supported by the sealing bushing 8 and mounted on the inner side of the mounting shaft hole. This ensures the stable rotation of the drive shaft 1 and the driven shaft 2 while ensuring the sealing of the mounting shaft hole.

[0026] The pumping gear 3 is used for driving the conveying of liquid media. Two sets of meshing pumping gears 3 are respectively installed in the middle of the drive shaft 1 and the driven shaft 2, as shown in the attached figure. Figure 3 As shown, two sets of pumping gears 3 are fixedly installed in the middle of the drive shaft 1 and the driven shaft 2, respectively. The tooth grooves of the two sets of pumping gears 3 are meshed with each other. The liquid medium is transported by the change in working space volume generated during the meshing process. The pumping gears 3 are located between two sets of support end seats 4. The support end seats 4 on both sides can limit the working position of the end sides of the pumping gears 3. In order to improve the rotational stability of the pumping gears 3, as shown in the attached figure... Figure 4 As shown, fitting ring seats 6 are provided on both ends of the two sets of pumping gears 3, and fitting ring grooves 7 are provided on the inner side of the support end seats 4. The fitting ring grooves 7 are adapted to the fitting ring seats 6. After installation, the fitting ring seats 6 and the fitting ring grooves 7 are slidably fitted together. The pumping gears 3 are rotatably fitted between the two sets of support end seats 4 through the fitting ring seats 6. The fitting and guiding of the ring seats, combined with the rotational support of the support end seats 4, can effectively improve the rotational working stability of the synchronous gears 5, avoid loosening caused by offset rotation, and greatly improve the working stability of the pump body.

[0027] Two sets of meshing synchronous gears 5 are respectively installed at the rear of the drive shaft 1 and the driven shaft 2, as shown in the attached figure. Figure 1 As shown, to facilitate the connection and installation of the synchronous gears 5, mounting posts 9 are fixedly installed at the rear ends of both the drive shaft 1 and the driven shaft 2. The mounting posts 9 movably penetrate the end seat at the rear of the pump body and are located inside the sealing end cover provided at the rear of the pump body. To achieve axial sealing, an end shaft sealing sleeve is provided on the through-mounting side of the mounting posts 9 and the end seat. The two sets of synchronous gears 5 are respectively fixedly installed on the upper part of the mounting posts 9 at the rear of the drive shaft 1 and the driven shaft 2. The two sets of synchronous gears 5 are connected by tooth groove meshing and adopt a gear synchronous auxiliary working structure. Two sets of meshing synchronous gears 5 are provided at the rear of the shafts of the two sets of pumping gears 3. The rotation synchronization of the two sets of pumping gears 3 is achieved through the meshing transmission of the two sets of synchronous gears 5. During operation, the two sets of pumping gears 3 perform synchronous and stable working meshing, avoiding the working impact caused by the start and stop of the pump body. This can effectively improve the service life of the pumping gears 3 in the pump body and greatly improve the working stability of the pump body.

[0028] The working principle or structural principle is as follows: During installation, the meshing installation of the two sets of pumping gears 3 is calibrated by angular positioning to ensure that the two sets of pumping gears 3 are in a stable contact meshing state and to avoid the generation of excessive contact stress. During operation, the driving force is input through the drive shaft 1, and the two sets of synchronous gears 5 mesh to make the two sets of pumping gears 3 rotate stably and synchronously. The liquid medium is transported by the change in working space volume generated during the mutual meshing process. During rotation, the end of the pumping gear 3 is rotated and engaged with the engagement ring groove 7 on the side of the support end seat 4 through the engagement ring seat 6. The engagement ring seat guides the rotational support of the support end seat 4, which can effectively improve the rotational working stability of the synchronous gears 5, avoid axial displacement of the pumping gears 3, further increase the meshing transmission stability of the two sets of pumping gears 3, and reduce the working wear of the pumping gears 3.

[0029] In summary, this gear pump adopts a gear synchronous auxiliary working structure. Two sets of meshing synchronous gears 5 are set at the rear of the rotating shafts of the two sets of pumping gears 3. The meshing transmission of the two sets of synchronous gears 5 realizes the synchronous rotation of the two sets of pumping gears 3. During operation, the two sets of pumping gears 3 perform synchronous and stable working meshing, avoiding the working impact caused by the start and stop of the pump body. This can effectively improve the service life of the pumping gears 3 in the pump body and greatly improve the working stability of the pump body. Furthermore, the rotating shaft structure of the pumping gears 3 is supported by the support end seat 4, and the two ends of the pumping gears 3 are provided with fitting ring seats 6. During operation, the pumping gears 3 are fitted and supported by the fitting ring seats 6 and the fitting ring grooves 7 on the inner side of the support end seat 4. The fitting and guiding of the ring seats, combined with the rotational support of the support end seat 4, can effectively improve the rotational working stability of the synchronous gears 5, avoid the loosening caused by offset rotation, and greatly improve the working stability of the pump body.

[0030] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A gear anti-loosening gear structure for a gear pump, comprising a drive shaft (1), a driven shaft (2), a pumping gear (3), a support end seat (4), and a synchronizing gear (5), characterized in that: The drive shaft (1) and driven shaft (2) are supported by the support end seat (4) and are rotatably installed in parallel inside the cavity seat of the pump body. The two sets of meshing synchronous gears (5) are respectively installed at the rear of the drive shaft (1) and driven shaft (2). Two sets of meshing pumping gears (3) are respectively installed in the middle of the drive shaft (1) and the driven shaft (2). Both ends of the two sets of pumping gears (3) are provided with fitting ring seats (6). The pumping gears (3) are rotatably fitted between the two sets of support end seats (4) through the fitting ring seats (6). The inner side of the support end seat (4) is provided with a fitting ring groove (7), which is adapted to the fitting ring seat (6). After installation, the fitting ring seat (6) and the fitting ring groove (7) are slidably fitted together.

2. The anti-loosening gear structure of a gear pump according to claim 1, characterized in that: The support end seats (4) are arranged in pairs, and the support end seats (4) are fixedly fitted and installed on both sides of the inside of the pump body cavity seat.

3. The anti-loosening gear structure of a gear pump according to claim 2, characterized in that: The support end seat (4) has a through mounting shaft hole in the middle. A sealing bushing (8) is installed inside the mounting shaft hole. The shaft columns of the drive shaft (1) and the driven shaft (2) are both mounted on the inside of the mounting shaft hole with the sealing bushing (8) supporting the fixed shaft rotation.

4. The anti-loosening gear structure of a gear pump according to claim 3, characterized in that: The two sets of pumping gears (3) are fixedly installed in the middle of the drive shaft (1) and the driven shaft (2), respectively, and the pumping gears (3) are located between the two sets of support end seats (4).

5. The anti-loosening gear structure of a gear pump according to claim 1, characterized in that: The rear ends of both the drive shaft (1) and the driven shaft (2) are fixedly mounted with mounting posts (9). The mounting posts (9) movably pass through the end seat of the rear part of the pump body and are located inside the sealing end cover provided at the rear part of the pump body.

6. The anti-loosening gear structure of a gear pump according to claim 5, characterized in that: The two sets of synchronous gears (5) are respectively fixedly installed on the upper part of the mounting column (9) at the rear of the drive shaft (1) and the driven shaft (2), and the two sets of synchronous gears (5) are connected by tooth meshing.

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