Double-rotation-direction gear pump

Abstract

The utility model belongs to the technical field of gear pumps, and particularly relates to a double-rotation-direction gear pump which comprises a pump body, a hydraulic cavity is arranged in the pump body, a driving shaft and a driven shaft which are parallel to each other are rotatably arranged in the hydraulic cavity, a driving gear is fixedly connected onto the driving shaft, a driven gear is fixedly connected onto the driven shaft, and the driving gear is meshed and matched with the driven gear. The pump body is provided with an oil inlet hole and an oil outlet hole which are communicated with the hydraulic cavity. One end of the pump body is detachably connected with a front end cover, the other end of the pump body is detachably connected with a rear end cover, the driven shaft is rotationally connected with the front end cover and the rear end cover, the driving shaft is rotationally connected with the front end cover and the rear end cover, one end of the driving shaft penetrates through the front end cover, and the driving shaft is connected with a reversing mechanism used for changing the steering direction of the driving shaft. By arranging the reversing mechanism, the sleeve is controlled to be matched with different sliding sleeves, and finally the output direction of oil of the gear pump can be changed under the condition that the rotating direction of the rotating shaft of the power driving equipment is not changed.

Description

Technical Field

[0001] This utility model belongs to the field of gear pump technology, specifically relating to a dual-rotation gear pump. Background Technology

[0002] Gear pumps, as core components of hydraulic systems, are widely used in industrial production. A gear pump consists of gears, a pump body, and front and rear covers. It transports fluid by changing and moving the working volume between the pump body and the meshing gears. When the gears rotate, the volume of the space on the disengaged side increases, creating a vacuum that draws in the fluid. Conversely, the volume of the space on the meshing side decreases, forcing the fluid into the pipeline.

[0003] Traditional gear pumps are typically designed for unidirectional output, meaning they can only rotate in one direction and deliver hydraulic fluid in that direction. However, with the continuous development of industrial technology, new requirements are being placed on hydraulic systems, with an increasing need for pumps that can change the rotation direction of the gears while maintaining the same direction of rotation of the external power source. Against this backdrop, the traditional unidirectional gear pump design can no longer meet the needs of industrial production. There is a need to design a gear pump that can change the output direction while maintaining the same direction of rotation of the external power source, thus solving the technical problem of traditional gear pumps only being able to output in one direction. Utility Model Content

[0004] The purpose of this invention is to provide a dual-rotation gear pump to solve the problems mentioned in the background art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0006] A dual-rotating gear pump includes a pump body with a hydraulic chamber inside. A parallel drive shaft and a driven shaft are rotatably arranged inside the hydraulic chamber. A drive gear is fixedly connected to the drive shaft, and a driven gear is fixedly connected to the driven shaft. The drive gear and the driven gear mesh with each other. The pump body has an oil inlet hole communicating with the hydraulic chamber, and an oil outlet hole communicating with the hydraulic chamber is provided at a position opposite to the oil inlet hole on the pump body.

[0007] One end of the pump body is detachably connected to a front cover, and the other end of the pump body is detachably connected to a rear cover. The driven shaft is rotatably connected between the front cover and the rear cover. The drive shaft is rotatably connected to the front cover and the rear cover. One end of the drive shaft passes through the front cover. The drive shaft is connected to a reversing mechanism for changing the direction of the drive shaft.

[0008] As a further improvement, the reversing mechanism includes a housing, inside which are a vertical input shaft and an output shaft. One end of the input shaft is connected to a power drive device, and the other end of the input shaft is fixedly connected to a first bevel gear. One end of the output shaft is fixedly connected to a drive shaft, and the other end of the output shaft is rotatably equipped with a second bevel gear and a third bevel gear. The second and third bevel gears are spaced apart and opposite to each other and are both meshed with the first bevel gear. Sliding sleeves are fixedly connected to the opposite end faces of the second and third bevel gears. A sleeve is provided between the two sliding sleeves. The sleeve is slidably connected to the output shaft, and the two ends of the sleeve are locked to the two sliding sleeves by a locking assembly.

[0009] As a further improvement, the engaging assembly includes multiple outer blocks provided on the outer circumferential sidewall of the sliding sleeve, and multiple inner blocks provided on the inner sidewall of the sleeve. Both the inner and outer blocks are isosceles triangular structures with rounded corners at the apex.

[0010] As a further improvement, an annular groove is provided in the middle part of the sleeve in the length extension direction, and a lever is provided in the groove, which is rotatably connected to the sleeve.

[0011] As a further improvement, a slide rail parallel to the output shaft is fixedly installed on the bottom surface of the housing, and a slide table slides on the slide rail, with the dial plate fixedly connected to the slide table.

[0012] As a further improvement, a cylinder parallel to the output shaft is fixedly installed on the side wall of the housing, and the output end of the cylinder is fixedly connected to the lever.

[0013] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0014] This utility model provides a dual-rotation gear pump that, by setting a reversing mechanism and controlling the sleeve to cooperate with different sliding sleeves, can ultimately change the output direction of the gear pump oil without changing the rotation direction of the power drive equipment shaft. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an assembly diagram of the driving gear and the driven gear of this utility model;

[0017] Figure 3 This is a schematic diagram of the reversing mechanism of this utility model;

[0018] Figure 4 This is an assembly diagram of the output shaft of this utility model;

[0019] Figure 5 This is a schematic diagram of the assembly of the sleeve and sliding sleeve of this utility model.

[0020] Wherein: 1-Pump body, 2-Hydraulic chamber, 3-Drive shaft, 4-Driven shaft, 5-Drive gear, 6-Driven gear, 7-Oil inlet, 8-Oil outlet, 9-Front end cover, 10-Rear end cover, 11-Reversing mechanism, 1101-Box body, 1102-Input shaft, 1103-Output shaft, 1104-First bevel gear, 1105-Second bevel gear, 1106-Third bevel gear, 1107-Sliding sleeve, 1108-Sleeve, 1109-Clamping assembly, 11091-Outer stop, 11092-Inner stop, 1110-Pulley, 1111-Slide rail, 1112-Slide table, 1113-Cylinder. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. However, those skilled in the art will understand that the embodiments described below are only some embodiments of this utility model, not all embodiments, and are only used to illustrate this utility model, and should not be regarded as limiting the scope of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Where the manufacturers of reagents or instruments are not specified, they are all conventional products that can be purchased commercially.

[0022] like Figure 1-5 As shown, a dual-rotating gear pump includes a pump body 1, with a hydraulic chamber 2 inside the pump body 1. A parallel drive shaft 3 and a driven shaft 4 are rotatably mounted inside the hydraulic chamber 2. A drive gear 5 is fixedly connected to the drive shaft 3, and a driven gear 6 is fixedly connected to the driven shaft 4. The drive gear 5 and driven gear 6 mesh with each other. The pump body 1 has an oil inlet 7 communicating with the hydraulic chamber 2, and an oil outlet 8 communicating with the hydraulic chamber 2 is located opposite to the oil inlet 7. The drive shaft 3 causes the drive gear 5 to rotate, driving the driven gear 6 to rotate. The volume of the space on the disengaged side of the drive gear 5 and driven gear 6 increases, creating a vacuum. Oil enters the hydraulic chamber 2 through the oil inlet 7. The volume of the space on the meshing side of the drive gear 5 and driven gear 6 decreases, and the oil is discharged from the hydraulic chamber 2 through the oil outlet 8, thus achieving the effect of oil supply.

[0023] One end of the pump body 1 is detachably connected to a front cover 9, and the other end of the pump body 1 is detachably connected to a rear cover 10. The driven shaft 4 is rotatably connected to the front cover 9 and the rear cover 10. The drive shaft 3 is rotatably connected to the front cover 9 and the rear cover 10. One end of the drive shaft 3 passes through the front cover 9. The drive shaft 3 is connected to a reversing mechanism 11 for changing the direction of rotation of the drive shaft 3. Without changing the rotation direction of the power drive equipment shaft, the reversing mechanism 11 can change the output direction of the oil of the gear pump.

[0024] In this embodiment, the reversing mechanism 11 includes a housing 1101. The housing 1101 contains a vertically arranged input shaft 1102 and an output shaft 1103. The input shaft 1102 and the output shaft 1103 are in the same horizontal plane. One end of the input shaft 1102 is connected to a power drive device, and the other end of the input shaft 1102 is fixedly connected to a first bevel gear 1104. One end of the output shaft 1103 is fixedly connected to a drive shaft 3, and the other end of the output shaft 1103 is rotatably provided with a second bevel gear 1105 and a third bevel gear 1106. Specifically, the second bevel gear 1105 and the third bevel gear 1106 are both connected to the output shaft 1103 through bearings. The second bevel gear 1105 and the output shaft 1103, and the third bevel gear 1106 and the output shaft 1103 can rotate relative to each other, but neither the second bevel gear 1105 nor the third bevel gear 1106 can move along the axial direction of the output shaft 1103. The second bevel gear 1105 and the third bevel gear 1106 are spaced apart and opposite to each other, and both mesh with the first bevel gear 1104. The power drive device drives the input shaft 1102 and the first bevel gear 1104 to rotate. The first bevel gear 1104 drives the second bevel gear 1105 and the third bevel gear 1106 to rotate. Since the second bevel gear 1105 and the third bevel gear 1106 are located on opposite sides of the first bevel gear 1104, the rotation directions of the second bevel gear 1105 and the third bevel gear 1106 are opposite. Since the second bevel gear 1105 and the third bevel gear 1106 are rotatably connected to the output shaft 1103, there is no power transmission between the second bevel gear 1105 and the output shaft 1103, or between the third bevel gear 1106 and the output shaft 1103. Sleeves 1107 are fixedly connected to the opposite end faces of the second bevel gear 1105 and the third bevel gear 1106. A sleeve 1108 is provided between the two sleeves 1107. The sleeve 1108 is slidably connected to the output shaft 1103. The two ends of the sleeve 1108 are locked to the two sleeves 1107 respectively by locking components 1109. Specifically, the diameter of the hole in the middle of the sleeve 1107 is smaller than the diameter of the holes at both ends of the sleeve 1108. The middle part of the sleeve 1108 is connected to the output shaft 1103 by a spline, so that the sleeve 1108 can move axially along the output shaft 1103, but does not rotate relative to the output shaft 1103. Locking components 1109 are provided on the inner walls at both ends of the sleeve 1108. Figure 4As shown, when sleeve 1108 moves to the right, it locks with the sliding sleeve 1107 connected to the second bevel gear 1105, enabling power transmission between the second bevel gear 1105 and the output shaft 1103, both rotating in the same direction. When sleeve 1108 moves to the left, it locks with the sliding sleeve 1107 connected to the third bevel gear 1106, enabling power transmission between the third bevel gear 1106 and the output shaft 1103, both rotating in the same direction. Therefore, by controlling the engagement of sleeve 1108 with different sliding sleeves 1107, the rotation direction of the output shaft 1103 and the drive shaft 3 can be changed, thereby changing the oil outlet direction.

[0025] In this embodiment, the engaging assembly 1109 includes a plurality of outer blocks 11091 disposed on the outer circumferential wall of the sliding sleeve 1107 and a plurality of inner blocks 11092 disposed on the inner circumferential wall of the sleeve 1108. Both the inner blocks 11092 and the outer blocks 11091 are isosceles triangular structures with rounded corners at the apex. The sidewalls of the inner blocks 11092 and the outer blocks 11091 abut against each other, which can make the sliding sleeve 1107 and the sleeve 1108 integrated into one unit to achieve power transmission. The rounded corners at the apex of the inner blocks 11092 and the outer blocks 11091 can make the contact between the two smoother and prevent tooth grinding.

[0026] In this embodiment, an annular groove is provided in the middle part of the sleeve 1108 along its length extension direction. A lever 1110 is provided in the groove. The lever 1110 is rotatably connected to the outer wall of the sleeve 1108. Specifically, the lever 1110 and the sleeve 1108 are connected by a bearing and can rotate relative to each other. The lever 1110 is used to push the sleeve 1108 to move axially along the output shaft 1103.

[0027] In this embodiment, a slide rail 1111 parallel to the output shaft 1103 is fixedly provided on the bottom surface of the housing 1101. A slide table 1112 is slidably provided on the slide rail 1111. A dial plate 1110 is fixedly connected to the slide table 1112. The slide rail 1111 and the slide table 1112 can limit the movement trajectory of the dial plate 1110 to always be parallel to the output shaft 1103.

[0028] In this embodiment, a cylinder 1113 parallel to the output shaft 1103 is fixedly installed on the side wall of the housing 1101. The output end of the cylinder 1113 is fixedly connected to the dial plate 1110. The cylinder 1113 extends and retracts to drive the dial plate 1110 to move along the slide rail 1111.

[0029] In this embodiment, during use, the power drive device drives the input shaft 1102 and the first bevel gear 1104 to rotate. The first bevel gear 1104 drives the second bevel gear 1105 and the third bevel gear 1106 to rotate in opposite directions. Figure 3As shown, cylinder 1113 extends, driving the lever 1110 to move to the left. Lever 1110 drives sleeve 1108 to move to the left until the inner stop block 11092 on sleeve 1108 engages with the outer stop block 11091 on the sliding sleeve 1107 of the third bevel gear 1106. Then, the power of the third bevel gear 1106 can be transmitted to the output shaft 1103. At this time, the third bevel gear 1106 drives the output shaft 1103 and the drive shaft 3 to rotate synchronously. Cylinder 1113 retracts, driving lever 111... When 0 moves to the right, the lever 1110 drives the sleeve 1108 to move to the right. After the inner stop block 11092 on the sleeve 1108 engages with the outer stop block 11091 on the sliding sleeve 1107 of the second bevel gear 1105, the power of the second bevel gear 1105 can be transmitted to the output shaft 1103. At this time, the second bevel gear 1105 drives the output shaft 1103 and the drive shaft 3 to rotate synchronously. In the above two states, the rotation direction of the drive shaft 3 is opposite, thereby changing the output direction of the oil.

[0030] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A dual-rotating gear pump, comprising a pump body, characterized in that, The pump body has a hydraulic chamber inside, and a parallel drive shaft and a driven shaft are rotatably arranged inside the hydraulic chamber. A drive gear is fixedly connected to the drive shaft, and a driven gear is fixedly connected to the driven shaft. The drive gear and the driven gear mesh with each other. The pump body has an oil inlet hole communicating with the hydraulic chamber, and an oil outlet hole communicating with the hydraulic chamber is located at a position opposite to the oil inlet hole on the pump body. One end of the pump body is detachably connected to a front cover, and the other end of the pump body is detachably connected to a rear cover. The driven shaft is rotatably connected between the front cover and the rear cover. The drive shaft is rotatably connected to the front cover and the rear cover. One end of the drive shaft passes through the front cover. The drive shaft is connected to a reversing mechanism for changing the direction of the drive shaft.

2. The dual-rotating gear pump according to claim 1, characterized in that, The reversing mechanism includes a housing, inside which are vertically arranged input and output shafts. One end of the input shaft is connected to a power drive device, and the other end of the input shaft is fixedly connected to a first bevel gear. One end of the output shaft is fixedly connected to the drive shaft, and the other end of the output shaft is rotatably provided with a second bevel gear and a third bevel gear. The second and third bevel gears are spaced apart and opposite to each other and are both meshed with the first bevel gear. Sliding sleeves are fixedly connected to the opposite end faces of the second and third bevel gears. A sleeve is provided between the two sliding sleeves. The sleeve is slidably connected to the output shaft, and the two ends of the sleeve are locked to the two sliding sleeves respectively by a locking assembly.

3. A dual-rotating gear pump according to claim 1, characterized in that, The engaging assembly includes multiple outer blocks disposed on the outer circumferential sidewall of the sliding sleeve, and multiple inner blocks disposed on the inner sidewall of the sleeve. Both the inner and outer blocks are isosceles triangular structures with rounded corners at the apex.

4. A dual-rotating gear pump according to claim 3, characterized in that, The sleeve has an annular groove in the middle of its length extension direction, and a lever plate is provided in the groove. The lever plate is rotatably connected to the sleeve.

5. A dual-rotating gear pump according to claim 4, characterized in that, The bottom surface of the housing is fixedly provided with a slide rail parallel to the output shaft, and a slide table is slidably provided on the slide rail. The dial plate is fixedly connected to the slide table.

6. A dual-rotating gear pump according to claim 5, characterized in that, A cylinder parallel to the output shaft is fixedly installed on the side wall of the housing, and the output end of the cylinder is fixedly connected to the lever plate.

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