Structure for improving flow stability of pump

Abstract

The structure for improving the flow stability of the pump comprises a pump body, a pump cover and a gear set, a gear cavity is formed in the pump body, the gear set comprises a driving gear and a driven gear, the driving gear comprises a first rotating shaft and a first gear part, the driven gear comprises a second rotating shaft and a second gear part, and the first gear part and the second gear part are connected in a meshed mode. The pump cover is assembled at the top of the pump body, a flow stabilizing plate is movably arranged at the top of the gear cavity, a first through hole and a second through hole which correspond to the first rotating shaft and the second rotating shaft are formed in the flow stabilizing plate in a penetrating mode, the first rotating shaft and the second rotating shaft are connected into the first through hole and the second through hole, and a plurality of elastic pieces are arranged between the flow stabilizing plate and the pump cover. The flow stabilizing plate applies downward pressure to the top end face of the first gear part and the top end face of the second gear part under the elastic force effect of the elastic piece, the flow stability and the stability precision are improved, the situation that the gears are stuck is avoided, and the detection difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, and more particularly to a structure for improving the stability of pump flow. Background Technology

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport or pressurize liquids.

[0003] Existing gear pumps have the following problems: 1. Due to the high precision requirements of gear pumps, the testing difficulty is also relatively high; 2. After long-term operation, the gears of the gear pump will wear, resulting in unstable flow and reduced precision; 3. Under high temperature environment, the gears of the gear pump will expand, causing the gears to jam. Summary of the Invention

[0004] The problem to be solved by this utility model is to provide a structure that improves the stability of pump flow, enhances flow stability and accuracy, avoids gear jamming, and reduces the difficulty of testing.

[0005] To solve the above-mentioned technical problems, a structure for improving pump flow stability provided by this utility model is adopted, comprising a pump body, a pump cover, and a gear set. The pump body is provided with a gear cavity, and the gear set includes a driving gear and a driven gear. The driving gear includes a first rotating shaft rotatably connected in the gear cavity and a first gear part connected to the first rotating shaft. The driven gear includes a second rotating shaft rotatably connected in the gear cavity and a second gear part connected to the second rotating shaft. The first gear part and the second gear part are meshed together. The pump cover is assembled on the top of the pump body. A flow stabilizing plate is movably provided on the top of the gear cavity. A first through hole and a second through hole corresponding to the first rotating shaft and the second rotating shaft are provided through the flow stabilizing plate. The first rotating shaft and the second rotating shaft are connected in the first through hole and the second through hole. Several elastic elements are provided between the flow stabilizing plate and the pump cover. Under the elastic force of the elastic elements, the flow stabilizing plate applies downward pressure to the top surfaces of the first gear part and the second gear part.

[0006] Preferably, the bottom of the pump cover is provided with a first receiving groove corresponding to the elastic member, the top of the flow stabilizer is provided with a second receiving groove corresponding to the first receiving groove, and the elastic member abuts between the top of the first receiving groove and the bottom of the second receiving groove.

[0007] Preferably, the elastic element is a spring.

[0008] Preferably, the shape of the flow stabilizer plate is fitted with a clearance fit to the inner wall of the gear cavity.

[0009] Preferably, the flow stabilizer is made of ceramic material.

[0010] Preferably, the bottom of the flow stabilizer plate is provided with a water outlet hole that communicates with the second receiving tank, and the water outlet hole communicates with the gear cavity.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a structure to improve the stability of pump flow. By installing a flow stabilizer plate in the gear cavity, and then using the elastic force of the elastic element to keep the flow stabilizer plate constantly pressing against the driving gear and driven gear, even if the gear set wears, there will be no gaps with other parts, which can reduce internal leakage and effectively solve the problems of unstable flow and reduced accuracy of gear pumps after long-term operation. Under the action of the elastic element, the flow stabilizer plate can dynamically adjust the pressing force on the driving gear and driven gear. Even if the gears expand due to high temperature, there will be no gear jamming. At the same time, it can reduce the accuracy of manual inspection and effectively reduce the difficulty of inspection. Attached Figure Description

[0012] Figure 1 A cross-sectional view of the present invention is shown.

[0013] Figure 2 An exploded view of the present invention is shown.

[0014] Figure 3 A schematic diagram illustrating the structure of the flow stabilizer of this utility model is shown.

[0015] Reference numerals in the attached drawings: Pump body 1, Gear cavity 10, Pump cover 2, First receiving groove 20, Gear set 3, Driving gear 30, First rotating shaft 300, First gear section 301, Driven gear 31, Second rotating shaft 310, Second gear section 311, Flow stabilizer 4, First through hole 40, Second through hole 41, Second receiving groove 42, Water outlet hole 420, Elastic element 5. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure.

[0017] Based on the embodiments described in this disclosure, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this disclosure.

[0018] refer to Figure 1-3 .

[0019] This utility model provides a structure for improving the stability of pump flow rate, comprising a pump body 1, a pump cover 2, and a gear set 3. The pump body 1 has a gear cavity 10. The gear set 3 includes a driving gear 30 and a driven gear 31. The driving gear 30 includes a first rotating shaft 300 rotatably connected in the gear cavity 10 and a first gear portion 301 connected to the first rotating shaft 300. The driven gear 31 includes a second rotating shaft 310 rotatably connected in the gear cavity 10 and a second gear portion 311 connected to the second rotating shaft 310. The first gear portion 301 and the second gear portion... 311 meshing connection, pump cover 2 is assembled on the top of pump body 1, and a flow stabilizer plate 4 is movably arranged on the top of gear cavity 10. The flow stabilizer plate 4 has a first through hole 40 and a second through hole 41 corresponding to the first rotating shaft 300 and the second rotating shaft 310. The first rotating shaft 300 and the second rotating shaft 310 are connected in the first through hole 40 and the second through hole 41. Several elastic elements 5 are arranged between the flow stabilizer plate 4 and the pump cover 2. Under the elastic force of the elastic elements 5, the flow stabilizer plate 4 applies downward pressure to the top surface of the first gear part 301 and the second gear part 311.

[0020] Its working principle is as follows: by installing a flow stabilizer plate 4 in the gear cavity 10, and then using the elastic force of the elastic element 5 to keep the flow stabilizer plate 4 constantly pressing the driving gear 30 and the driven gear 31, even if the gear set 3 is worn, there will be no gap with other parts, which can reduce internal leakage and effectively solve the problems of unstable flow and reduced accuracy of the gear pump after long-term operation. Under the action of the elastic force of the elastic element 5, the flow stabilizer plate 4 can dynamically adjust the pressing force on the driving gear 30 and the driven gear 31. Even if the gears expand due to high temperature, there will be no gear jamming. At the same time, it can reduce the accuracy of manual inspection and effectively reduce the difficulty of inspection.

[0021] Based on the above embodiments, the bottom of the pump cover 2 is provided with a first receiving groove 20 corresponding to the elastic member 5, and the top of the flow stabilizer 4 is provided with a second receiving groove 42 corresponding to the first receiving groove 20. The elastic member 5 abuts between the top of the first receiving groove 20 and the bottom of the second receiving groove 42, which can limit the elastic member 5, prevent the elastic member 5 from shifting, and ensure that the elastic member 5 stably applies elastic force to the flow stabilizer 4.

[0022] Based on the above embodiments, the elastic element 5 is a spring, which has the advantages of low cost and easy replacement.

[0023] Based on the above embodiments, the shape of the flow stabilizer plate 4 is fitted with the inner wall of the gear cavity 10 to prevent the flow stabilizer plate 4 from shifting laterally within the gear cavity 10, and to ensure that the flow stabilizer plate 4 can press the driving gear 30 and the driven gear 31 together under the elastic force of the elastic member 5.

[0024] Based on the above embodiments, the flow stabilizer 4 is made of ceramic material. Ceramic has wear-resistant properties, which can improve the service life of the flow stabilizer 4.

[0025] Based on the above embodiments, the bottom of the flow stabilizer plate 4 is provided with a water outlet 420 that communicates with the second receiving tank 42. The water outlet 420 communicates with the gear cavity 10 to prevent water from accumulating in the second receiving tank 42.

[0026] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A structure for improving pump flow stability, comprising a pump body, a pump cover, and a gear set, characterized in that, The pump body is provided with a gear cavity. The gear set includes a driving gear and a driven gear. The driving gear includes a first rotating shaft rotatably connected in the gear cavity and a first gear part connected to the first rotating shaft. The driven gear includes a second rotating shaft rotatably connected in the gear cavity and a second gear part connected to the second rotating shaft. The first gear part and the second gear part are meshed together. The pump cover is assembled on the top of the pump body. A flow stabilizing plate is movably provided on the top of the gear cavity. The flow stabilizing plate has a first through hole and a second through hole corresponding to the first rotating shaft and the second rotating shaft. The first rotating shaft and the second rotating shaft are connected in the first through hole and the second through hole. A plurality of elastic elements are provided between the flow stabilizing plate and the pump cover. Under the elastic force of the elastic elements, the flow stabilizing plate applies downward pressure to the top surfaces of the first gear part and the second gear part.

2. The structure for improving pump flow stability according to claim 1, characterized in that, The bottom of the pump cover is provided with a first receiving groove corresponding to the elastic member, and the top of the flow stabilizer is provided with a second receiving groove corresponding to the first receiving groove. The elastic member abuts between the top of the first receiving groove and the bottom of the second receiving groove.

3. The structure for improving pump flow stability according to claim 2, characterized in that, The elastic element is a spring.

4. The structure for improving pump flow stability according to claim 3, characterized in that, The shape of the flow stabilizer plate is fitted with the inner wall of the gear cavity with clearance.

5. The structure for improving pump flow stability according to claim 4, characterized in that, The flow stabilizer plate is made of ceramic material.

6. The structure for improving pump flow stability according to claim 5, characterized in that, The bottom of the flow stabilizer plate is provided with a water outlet hole that communicates with the second receiving tank, and the water outlet hole is connected to the gear cavity.

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