Novel gear pump

Abstract

The utility model relates to the technical field of gear pumps, and discloses a novel gear pump which comprises a reactor pump upper valve block, the rear side of the reactor pump upper valve block is fixedly connected with a reactor pump lower valve body, the left end of the front side of the bottom wall of the reactor pump upper valve block is provided with a first oil inlet, and the right end of the front side of the bottom wall of the reactor pump upper valve block is provided with a second oil inlet. And adjusting nuts are fixedly installed at the bottom ends of the inner walls of the first oil inlet and the second oil inlet correspondingly, first steel balls are fixedly connected to the top ends of the two adjusting nuts correspondingly, overflow springs are fixedly installed on the left side and the right side of the reactor pump upper valve block correspondingly, and second steel balls are fixedly connected to the adjacent sides of the two overflow springs correspondingly. According to the oil cylinder, positive and negative pressure switching is generated at the two oil inlets by rotating the first cylindrical gear, power output of the oil cylinder is achieved, when the gear stops, output oil pressure can be kept constant, and effective functions can still be achieved on the basis that assemblies are greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of gear pumps, in particular to a novel gear pump. Background Art

[0002] A gear pump is a common hydraulic transmission device used to transport liquid from one place to another. It is based on two or more intermeshing gears rotating in the pump housing, thereby producing the effect of sucking in and discharging liquid.

[0003] Gear pumps usually consist of two gears, a driving gear and a driven gear. The meshing space between these gears forms a sealed working chamber. When the gears rotate, the volume of the working chamber changes, thereby producing the effect of sucking in and discharging liquid. When the driving gear rotates, the liquid is sucked into the working chamber and then discharged to the outlet of the pump as the gears rotate.

[0004] The hydraulic system in a gear pump is the most basic power component, but due to its complex structure and large size, it results in high manufacturing costs, increased space occupied by the equipment, and an increase in the number of complex structural parts. It is very easy to cause errors in operation during use, resulting in accidents and losses. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a new gear pump, which aims to improve the problems of high manufacturing cost, increased space occupied by equipment, increased number of complex structural parts, and easy operation errors, accidents and losses during use due to its complex structure and large size.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a new gear pump, comprising an upper valve block of a stack pump, a lower valve body of a stack pump is fixedly connected to the rear side of the upper valve block of the stack pump, a first oil inlet is opened at the left end of the front side of the bottom wall of the upper valve block of the stack pump, a second oil inlet is opened at the right end of the front side of the bottom wall of the upper valve block of the stack pump, an adjusting nut is fixedly installed at the bottom end of the inner wall of the first oil inlet and the second oil inlet, a first steel ball is fixedly connected to the top end of the two adjusting nuts, an overflow spring is fixedly installed on the left and right sides of the upper valve block of the stack pump, a second steel ball is fixedly connected to the adjacent side of the two overflow springs, an oil inlet hole is opened at the top end of the front side of the upper valve block of the stack pump, a rising overflow valve seat is fixedly installed at the left end of the rear side of the top wall of the upper valve block of the stack pump, a third steel ball is fixedly connected to the bottom end of the rising overflow valve seat, a first cylindrical gear is rotatably connected to the upper end of the front side of the lower valve body of the stack pump, and an oil inlet and outlet are opened in the middle of the front side of the upper valve block of the stack pump.

[0007] As a further description of the above technical solution:

[0008] A plug is fixedly installed on the top left side of the stack pump upper valve block, and a second cylindrical gear is rotatably connected to the lower front end of the stack pump lower valve body. A descending one-way valve seat is fixedly installed on the right rear end of the top wall of the stack pump upper valve block, a spring is provided at the lower end of the inner wall of the descending one-way valve seat, and a composite valve block is fixedly connected to the bottom end of the composite valve block, and a ejector pin is fixedly connected to the bottom end of the composite valve block.

[0009] As a further description of the above technical solution:

[0010] The front sides of the first cylindrical gear and the second cylindrical gear are rotatably connected to the middle of the rear side of the stack pump upper valve block, and the rear sides of the first cylindrical gear and the second cylindrical gear are rotatably connected to the middle of the front side of the stack pump lower valve body.

[0011] As a further description of the above technical solution:

[0012] The first cylindrical gear is meshingly connected with the second cylindrical gear.

[0013] As a further description of the above technical solution:

[0014] The two overflow springs are of symmetrical design.

[0015] As a further description of the above technical solution:

[0016] The surfaces of the stack pump upper valve block and the stack pump lower valve body are both subjected to rust-proof treatment.

[0017] As a further description of the above technical solution:

[0018] The specification of the adjusting nut is M10.

[0019] As a further description of the above technical solution:

[0020] The specification of the plug is M6 model.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by rotating the first cylindrical gear, negative pressure is generated at the first oil inlet, the first steel ball on the left is opened, allowing oil to flow in from the oil pool, the gear squeezes to form high pressure at the second oil inlet, the first steel ball on the right is closed, and the third steel ball is opened to ensure that the oil enters the oil outlet smoothly. Under high pressure, the fourth steel ball closes the connection with the oil pool. When the pressure reaches the set value, the second steel ball on the right keeps the oil pressure stable under the action of the spring to achieve power output of the oil cylinder. When the gear stops, the third steel ball is closed to keep the output oil pressure constant, so that it can still achieve effective functions on the basis of greatly simplified components.

[0023] 2. In the utility model, the functions of oil suction, pressurization and discharge are realized through negative pressure oil suction, positive pressure oil discharge and reverse flow of oil, thus ensuring the normal operation of the gear pump. At the same time, by controlling the switch state of each steel ball, the backflow and leakage of the oil can be effectively prevented, thus improving the working efficiency and reliability of the gear pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of a new type of gear pump proposed by the utility model;

[0025] Figure 2 A cross-sectional view of a novel gear adjusting nut proposed by the utility model;

[0026] Figure 3 A cross-sectional view of a novel gear pump rising overflow valve seat proposed by the utility model;

[0027] Figure 4 This is a cross-sectional view of the first cylindrical gear of a new type of gear pump proposed by the utility model;

[0028] Figure 5 This is a cross-sectional view of the oil inlet and outlet of a novel gear pump proposed by the utility model.

[0029] Legend:

[0030] 1. Stack pump upper valve block; 2. Stack pump lower valve body; 3. First oil inlet; 4. Second oil inlet; 5. Adjusting nut; 6. First steel ball; 7. Overflow spring; 8. Second steel ball; 9. Oil inlet hole; 10. Plug; 11. Rising overflow valve seat; 12. Descending check valve seat; 13. Spring; 14. Composite valve block; 15. Ejector pin; 16. Third steel ball; 17. Fourth steel ball; 18. First cylindrical gear; 19. Second cylindrical gear; 20. Oil inlet and outlet. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1-5The utility model provides an embodiment: a new gear pump, including a stack pump upper valve block 1, a stack pump lower valve body 2 is fixedly connected to the rear side of the stack pump upper valve block 1, a first oil inlet 3 is opened at the left end of the front side of the bottom wall of the stack pump upper valve block 1, a second oil inlet 4 is opened at the right end of the front side of the bottom wall of the stack pump upper valve block 1, the first oil inlet 3 and the second oil inlet 4 are fixedly installed at the bottom of the inner wall of the first oil inlet 3 and the second oil inlet 4, and the tops of the two adjusting nuts 5 are fixedly connected to the first steel ball 6. Overflow springs 7 are fixedly installed on the left and right sides of the valve block 1, and the adjacent sides of the two overflow springs 7 are fixedly connected with second steel balls 8. An oil inlet hole 9 is opened at the front top of the stack pump upper valve block 1, and a rising overflow valve seat 11 is fixedly installed at the left end of the rear side of the top wall of the stack pump upper valve block 1. The bottom end of the rising overflow valve seat 11 is fixedly connected with a third steel ball 16. The upper end of the front side of the stack pump lower valve body 2 is rotatably connected with a first cylindrical gear 18. An oil inlet and outlet port 20 is opened in the middle of the front side of the stack pump upper valve block 1;

[0033] Specifically, when the gear pump main shaft is driven by the motor to drive the first cylindrical gear 18 to achieve forward movement, negative pressure is formed in and out of the first oil inlet 3, and the first oil inlet 3 is also negatively pressurized. The first steel ball 6 on the left side opens under the action of negative pressure, so that the first oil inlet 3 is connected with the oil pool to achieve oil inlet. Under the extrusion of the gear pump gear, the second oil inlet 4 forms a high-pressure area. At this time, the first steel ball 6 on the right side closes the connection with the oil pool, and the third steel ball 16 opens under the action of oil pressure to ensure that the oil smoothly enters the oil inlet and outlet 20. When the second oil inlet 4 forms high pressure, the fourth steel ball 17 closes the connection with the oil pool under the action of oil pressure. When the second oil inlet 4 reaches a certain pressure, the second steel ball 8 on the right side can maintain a stable oil pressure under the action of the spring 13, ensure the normal operation of the equipment, and realize the operation output power of the cylinder. When the first cylindrical gear 18 stops running, the third steel ball 16 is closed to ensure that the output oil can maintain a constant oil pressure.

[0034] Reference Figure 2-5 A plug 10 is fixedly installed on the top left side of the stack pump upper valve block 1, and a second cylindrical gear 19 is rotatably connected to the front lower end of the stack pump lower valve body 2. A descending one-way valve seat 12 is fixedly installed on the right end of the rear side of the top wall of the stack pump upper valve block 1, and a spring 13 is arranged on the lower end of the inner wall of the descending one-way valve seat 12. A composite valve block 14 is fixedly connected to the bottom end of the descending one-way valve seat 12, and a ejector pin 15 is fixedly connected to the bottom end of the composite valve block 14;

[0035] Specifically, negative pressure is formed at the second oil inlet 4, and the first steel ball 6 on the right side opens under the action of negative pressure, so that the second oil inlet 4 is connected with the oil pool to realize oil inlet. Under the extrusion of the gear pump gear, the first oil inlet 3 forms a high-pressure area with full oil pressure. At this time, the first steel ball 6 on the left side is closed under the action of oil pressure, so that the high-pressure chamber is disconnected from the oil pool. The first steel ball 6 on the right side is closed under the action of oil pressure to block its connection with the oil pool. Under the high pressure of the second oil inlet 4, the ejector pin 15 pushes the fourth steel ball 17. At this time, the oil in the oil inlet and outlet 20 returns to the oil pool through the gap of the fourth steel ball 17, realizing the reverse flow of oil and ensuring the normal operation.

[0036] Reference Figure 3 and Figure 4 The front sides of the first cylindrical gear 18 and the second cylindrical gear 19 are rotatably connected to the middle of the rear side of the stack pump upper valve block 1, and the rear sides of the first cylindrical gear 18 and the second cylindrical gear 19 are rotatably connected to the middle of the front side of the stack pump lower valve body 2; the first cylindrical gear 18 is meshed with the second cylindrical gear 19;

[0037] Specifically, by adjusting parameters such as the gear rotation speed, the number of gear teeth and the tooth shape, the flow rate and pressure of the transported liquid can be precisely adjusted. The front sides of the first cylindrical gear 18 and the second cylindrical gear 19 are rotatably connected to the middle of the rear side of the stack pump upper valve block 1, and the rear sides are rotatably connected to the middle of the front side of the stack pump lower valve body 2. This design makes the entire gear pump compact, easy to install and maintain, and reduces the failure rate.

[0038] Reference Figure 2-4 , the two overflow springs 7 are symmetrically designed; the surfaces of the upper valve block 1 of the stack pump and the lower valve body 2 of the stack pump are both rust-proofed; the specification of the adjusting nut 5 is M10; the specification of the plug 10 is M6;

[0039] Specifically, the main function of the overflow spring 7 is to control the pressure. The symmetrical design helps to ensure the pressure balance on both sides, making the operation more stable and reliable. The anti-rust treatment can effectively prevent rust on the surface of the valve block and the valve body, and protect them from environmental corrosion. The adjusting nut 5 is used to adjust the internal parameters of the pump. The specifications of the adjusting nut 5 model M10 and the plug 10 model M6 indicate their size and thread standards, which help to ensure compatibility and interchangeability with other components. Their size and installation method meet the standards and are convenient for installation and disassembly.

[0040] Working principle: The gear pump main shaft can realize forward rotation under the drive of the motor. At this time, the first oil inlet 3 forms a negative pressure to attract oil to enter. The first steel ball 6 on the left side opens under the action of negative pressure, so that the oil pool is connected with the oil inlet, and the oil enters smoothly. The gears of the gear pump squeeze the oil, forming a high-pressure area at the second oil inlet 4. At this time, the first steel ball 6 on the right closes the connection with the oil pool, and the third steel ball 16 opens under the action of oil pressure to ensure that the oil flows smoothly into the oil outlet. The formation of the high-pressure area causes the fourth steel ball 17 to close the channel with the oil pool. When the pressure reaches the set value, the second steel ball 8 on the right maintains a stable oil pressure under the action of the spring 13 to ensure the normal operation of the equipment and the power output of the cylinder. When the first cylindrical gear 18 stops running, the third steel ball 16 is closed to keep the oil pressure constant. By optimizing the structure and improving the mechanism, the common fault problems in the old gear pump are effectively solved, which provides a more reliable guarantee for the normal operation of the equipment and the power output of the cylinder. When the second oil inlet 4 forms a negative pressure, due to the suction of the negative pressure, the first steel ball 6 on the right will be opened, which forms a passage between the second oil inlet 4 and the oil pool, thereby realizing the function of oil inlet. The oil is sucked into the interior of the gear pump through this passage, and then the gear pump starts working, and the rotation of the gears squeezes the oil. Under the extrusion of the gear, the oil at the first oil inlet 3 will form a high-pressure area with full oil pressure. At this time, due to the effect of high pressure, the first steel ball 6 on the left will be closed, thereby blocking the connection between the high-pressure chamber and the oil pool and preventing the backflow of oil. At the same time, under the effect of oil pressure, the first steel ball 6 on the right will also be closed, further ensuring the sealing of the high-pressure chamber. As the gear continues to rotate, the oil pressure at the second oil inlet 4 will continue to increase. When the oil pressure reaches a certain level, it will push the ejector pin 15 forward, thereby pushing the fourth steel ball 17. At this time, the oil in the oil inlet and outlet 20 can return to the oil pool through the gap between the fourth steel ball 17 and the ejector pin 15, realizing the reverse flow of oil. The purpose of this process is to balance the oil pressure inside the gear pump and ensure the normal operation of the gear pump.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel gear pump, comprising a stack pump upper valve block (1), characterized in that: The rear side of the stack pump upper valve block (1) is fixedly connected to the stack pump lower valve body (2), the front left end of the bottom wall of the stack pump upper valve block (1) is provided with a first oil inlet (3), the front right end of the bottom wall of the stack pump upper valve block (1) is provided with a second oil inlet (4), the bottom ends of the inner walls of the first oil inlet (3) and the second oil inlet (4) are fixedly installed with adjustment nuts (5), the top ends of the two adjustment nuts (5) are fixedly connected with first steel balls (6), and the left and right sides of the stack pump upper valve block (1) are fixedly installed with overflow springs. (7), the adjacent sides of the two overflow springs (7) are fixedly connected with a second steel ball (8), the front top of the stack pump upper valve block (1) is provided with an oil inlet hole (9), the rear left end of the top wall of the stack pump upper valve block (1) is fixedly installed with a rising overflow valve seat (11), the bottom end of the rising overflow valve seat (11) is fixedly connected with a third steel ball (16), the front upper end of the stack pump lower valve body (2) is rotatably connected with a first cylindrical gear (18), and the front middle of the stack pump upper valve block (1) is provided with an oil inlet and outlet port (20).

2. A novel gear pump according to claim 1, characterized in that: A plug (10) is fixedly installed on the top left side of the stack pump upper valve block (1), and a second cylindrical gear (19) is rotatably connected to the front lower end of the stack pump lower valve body (2). A descending one-way valve seat (12) is fixedly installed on the right end of the rear side of the top wall of the stack pump upper valve block (1), and a spring (13) is provided at the lower end of the inner wall of the descending one-way valve seat (12). The bottom end of the descending one-way valve seat (12) is fixedly connected to a composite valve block (14), and the bottom end of the composite valve block (14) is fixedly connected to a ejector pin (15).

3. A new gear pump according to claim 2, characterized in that: The front sides of the first cylindrical gear (18) and the second cylindrical gear (19) are rotatably connected to the middle of the rear side of the stack pump upper valve block (1), and the rear sides of the first cylindrical gear (18) and the second cylindrical gear (19) are rotatably connected to the middle of the front side of the stack pump lower valve body (2).

4. A novel gear pump according to claim 2, characterized in that: The first cylindrical gear (18) is meshingly connected with the second cylindrical gear (19).

5. A novel gear pump according to claim 1, characterized in that: The two overflow springs (7) are of symmetrical design.

6. A novel gear pump according to claim 1, characterized in that: The surfaces of the stack pump upper valve block (1) and the stack pump lower valve body (2) are both subjected to rust-proof treatment.

7. A novel gear pump according to claim 1, characterized in that: The specification of the adjusting nut (5) is M10.

8. A novel gear pump according to claim 2, characterized in that: The specification of the plug (10) is M6.

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