Pressure-adjustable low-noise gear pump

Abstract

The invention relates to the technical field of gear pumps, and discloses a pressure-adjustable low-noise gear pump, which is characterized in that interface seats are arranged on two sides of a gear shell and are respectively provided with a liquid discharge interface and a liquid inlet interface. A front cover seat is arranged at the front end, a rear cover seat is arranged at the rear end, and sealing grooves are arranged on the inner walls of the front cover seat and the rear cover seat. A column opening is formed in the front cover seat, a driving column penetrates through the column opening, and a lower gear is installed on the column and located in the gear cavity. A transmission column is arranged above the lower gear, an upper gear is arranged on the transmission column, and the upper gear and the lower gear are meshed. Through the design of the flow control mechanism, on the premise that the overall structure of the pump is not changed, the operation noise is effectively reduced, and the output pressure can be rapidly adjusted according to different working environments and requirements. By means of the design, the adjusting process is simplified, the response speed is increased, due to the optimized structure, the manufacturing cost is reduced, and meanwhile the performance and reliability of the pump are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of gear pumps, in particular to a low-noise gear pump capable of adjusting pressure. Background Art

[0002] Gear pumps are a common type of hydraulic pumps and are widely used in various hydraulic systems. Their working principle is to transport liquids through the change in working volume formed by the rotation of two meshing gears. However, traditional gear pumps often produce a lot of noise during operation, which is mainly due to the pulsating pressure and fluid dynamic noise generated when the gears mesh. In addition, due to the diversity of working environments and application requirements, the output pressure of traditional gear pumps is usually fixed, which is difficult to adapt to different working conditions.

[0003] In order to reduce noise, many methods have been tried in the existing technology, such as improving the geometry of gears, using shock-absorbing materials, optimizing the internal flow channel design of the pump, etc. However, these methods often require major changes to the overall structure of the pump, which increases manufacturing costs and may affect the performance and reliability of the pump. At the same time, for the demand for pressure regulation, although there are gear pumps with adjustable pressure on the market, these pumps are usually complex in structure, the adjustment process is cumbersome, and the response speed is slow, making it difficult to meet rapidly changing working conditions.

[0004] Therefore, based on the above technical problems, it is necessary for technicians in this field to develop a low-noise gear pump with adjustable pressure. Summary of the invention

[0005] The object of the present invention is to provide a low-noise gear pump with adjustable pressure to solve the common problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-noise gear pump with adjustable pressure, comprising a gear housing, interface seats are provided on both sides of the gear housing, and the two interface seats are respectively provided with a liquid discharge interface and a liquid inlet interface, a gear cavity is provided inside the gear housing, a front cover seat is installed at the front end of the gear housing, a column opening is provided on the front cover seat, a rear cover seat is installed at the rear end of the gear housing, sealing notches are provided on the inner walls opposite to the front cover seat and the rear cover seat, a column opening is provided on the front cover seat, a driving column is connected in the column opening, a lower gear is installed on the driving column, the lower gear is located in the gear cavity, a transmission column is provided above the lower gear, an upper gear is installed on the transmission column, and the upper gear is meshed and connected with the lower gear;

[0007] A flow control seat is installed outside the liquid inlet interface, and a flow control mechanism is installed in the flow control seat. The flow control mechanism includes a rear ring plate and a front ring plate. The inner wall of the rear ring plate is provided with a plurality of guide grooves along the circumferential direction of the ring opening, and the front ring plate is provided with a plurality of guide openings through the inner wall along the circumferential direction of the ring opening, and the plurality of guide openings correspond to the guide grooves one by one. A plurality of control plates are provided between the front ring plate and the rear ring plate, and the plurality of control plates are arranged in a circular shape. A guide column head is installed at the front end of each control plate, and a guide strip is installed at the rear end. The guide column head extends into the guide opening and is slidably connected thereto, and the guide strip extends into the guide groove and is also slidably connected thereto.

[0008] As a preferred technical solution, the adjacent sides of the control plates are precisely fitted to facilitate synchronous linkage of several control plates, and the rear ring plates are all rotatably connected to the flow control seat.

[0009] As a preferred technical solution, a micro motor is installed in the flow control seat, an output end of the micro motor is connected to a bevel gear, a bevel gear ring is installed on the back of the rear ring plate, and the bevel gear is meshedly connected with the bevel gear ring.

[0010] As a preferred technical solution, fixing recesses for fixing are provided on both sides of the front cover seat, a shaft sleeve is provided between the driving column and the column opening, and a spline assembly opening is provided at the outer end of the driving column for connecting to a power device.

[0011] As a preferred technical solution, a sealing rubber ring is installed in the sealing groove, and positioning column sleeves are mounted on the outside of the driving column and the transmission column and are rotatably connected thereto, and the positioning column sleeves are installed in the front cover seat and the rear cover seat.

[0012] As a preferred technical solution, side baffles are installed inside the front cover seat and the rear cover seat, and two through-holes are provided through the side baffles, and the positioning column sleeves are inserted into the through-holes.

[0013] As a preferred technical solution, the gear housing has connecting holes at its corners, the front cover seat and the rear cover seat have stud openings at the same positions at their corners, studs are installed in the stud openings and the connecting holes, and gaskets are mounted on the studs.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention is a low-noise gear pump with adjustable pressure. Through the design of the flow control mechanism, the operating noise is effectively reduced without changing the overall structure of the pump, and the output pressure can be quickly adjusted according to different working environments and requirements. This design not only simplifies the adjustment process and improves the response speed, but also reduces the manufacturing cost due to its optimized structure, while ensuring the performance and reliability of the pump.

[0016] By utilizing the movement of the rear ring plate, multiple sets of control plates are synchronously linked, and the guide opening and guide groove are coordinated to realize the axial opening and closing control of multiple sets of control plates, thereby adjusting the flow of the fluid and realizing precise pressure control. The introduction of the micro motor makes the flow control more automated and intelligent. Users can adjust the output pressure of the pump through simple operations according to actual needs to meet rapidly changing working conditions.

[0017] In addition, the present invention also adopts a combination of a sealing rubber ring and a positioning column sleeve to ensure the sealing and stability of the gear pump during operation. The setting of the side baffle further enhances the structural strength of the gear pump and ensures the reliable operation of the pump under high-pressure working environment.

[0018] The present invention provides a low-noise gear pump with adjustable pressure that has simple structure, convenient adjustment, low noise and reliable performance, which effectively solves the technical problems of traditional gear pumps in noise and pressure regulation and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structure diagram of a low-noise gear pump with adjustable pressure is shown;

[0020] Figure 2 It is a schematic diagram of the explosion-proof structure of a low-noise gear pump with adjustable pressure;

[0021] Figure 3 The schematic diagram of the gear chamber structure in a low-noise gear pump with adjustable pressure;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of a gear chamber in a low-noise gear pump with adjustable pressure;

[0023] Figure 5 It is a schematic diagram of the flow control mechanism structure in a low-noise gear pump with adjustable pressure;

[0024] Figure 6 This is a schematic diagram of the disassembled structure of a flow control mechanism in a low-noise gear pump with adjustable pressure;

[0025] Figure 7 This is a schematic diagram of the back structure of a control plate in a low-noise gear pump with adjustable pressure;

[0026] Figure 8 The figure is a schematic diagram of the driving structure of a low-noise gear pump with adjustable pressure.

[0027] In the accompanying drawings: 11, gear housing; 12, interface seat; 13, drainage interface; 14, liquid inlet interface; 15, gear cavity; 16, through hole; 21, front cover seat; 22, fixing recess; 23, column mouth; 24, rear cover seat; 25, sealing notch; 26, stud mouth; 27, stud; 28, gasket; 29, sealing rubber ring; 31, drive column; 32, lower gear; 33, spline assembly mouth; 34, bushing; 35, transmission column; 36, upper gear; 37, positioning column sleeve; 38, side baffle; 39, through mouth; 4, flow control seat; 41, rear ring plate; 411, guide groove; 42, front ring plate; 421, guide mouth; 43, control plate; 44, guide column head; 45, guide strip; 46, micro motor; 47, bevel gear; 48, bevel gear ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0030] Example

[0031] See also Figure 1-8 As shown, the present invention provides a technical solution for a low-noise gear pump with adjustable pressure: comprising a gear housing 11, with interface seats 12 provided on both sides of the gear housing 11, each interface seat 12 being provided with a liquid discharge interface 13 and a liquid inlet interface 14. A gear cavity 15 is formed inside the gear housing 11 for accommodating a gear transmission system. A front cover seat 21 is installed at the front end of the gear housing 11, and a rear cover seat 24 is installed at the rear end. Sealing notches 25 are provided on the opposite inner walls of the front cover seat 21 and the rear cover seat 24, respectively, to ensure the sealing inside the gear cavity 15.

[0032] A column opening 23 is provided through the front cover seat 21, and a driving column 31 is connected in the column opening 23. A lower gear 32 is installed on the driving column 31, and the lower gear 32 is located in the gear cavity 15. A transmission column 35 is provided above the lower gear 32, and an upper gear 36 is installed on the transmission column 35. The upper gear 36 is meshed with the lower gear 32 to form a meshing gear pair for transmitting power.

[0033] A flow control seat 4 is installed outside the liquid inlet interface 14, and a flow control mechanism is installed inside the flow control seat 4. The flow control mechanism includes a rear ring plate 41 and a front ring plate 42. The inner wall of the rear ring plate 41 is provided with a plurality of guide grooves 411 along the circumferential direction of the ring opening, and the front ring plate 42 is provided with a plurality of guide openings 421 along the circumferential direction of the ring opening, and the guide openings 421 correspond to the guide grooves 411 one by one. A plurality of control plates 43 are arranged between the front ring plate 41 and the rear ring plate 42, and the control plates 43 are arranged in a circular shape. A guide column head 44 is installed at the front end of each control plate 43, and a guide bar 45 is installed at the rear end. The guide column head 44 extends into the guide opening 421 and is slidably connected thereto, and the guide bar 45 extends into the guide groove 411 and is also slidably connected thereto. This structural design enables the flow control mechanism to adjust the flow through the liquid inlet interface 14 as needed.

[0034] Among them, the sides of adjacent control plates 43 are precisely fitted to ensure that they can be seamlessly synchronized. This precise matching not only improves the response speed of the control plate 43, but also enhances the stability and reliability of the overall system. The rotational connection design between the rear ring plate 41 and the flow control seat 4 allows the entire device to be flexibly adjusted during operation to adapt to different flow requirements. This rotational connection method allows the rear ring plate 41 to rotate freely within a certain range, thereby achieving precise control of the flow. Overall, this design not only optimizes the collaborative work between the control plate 43 and the rear ring plate 41, but also improves the performance and efficiency of the entire system.

[0035] Among them, a micro motor 46 is installed in the quantity control seat 4, and the output end of the micro motor 46 is connected to a bevel gear 47 through a transmission shaft. The micro motor 46 is responsible for providing power, and the flow rate can be finely adjusted by accurately controlling its rotation speed and rotation direction. The bevel gear 47 is installed at the end of the transmission shaft. It is a small gear with an umbrella-shaped tooth shape that can mesh with the bevel gear ring 48.

[0036] The rear ring plate 41 is a part of the flow control device, and a bevel gear ring 48 is installed on the back thereof. The bevel gear ring 48 is a gear ring matching the bevel gear 47, and its inner side has a tooth shape meshing with the bevel gear 47. When the micro motor 46 is started, the bevel gear 47 rotates accordingly, and due to the meshing of the bevel gear 47 and the bevel gear ring 48, this rotational motion is transmitted to the bevel gear ring 48.

[0037] Among them, the front cover seat 21 is provided with fixing recesses 22 for fixing on both sides, and these recesses are designed to ensure the stable connection between the front cover seat and other components to withstand various forces and vibrations during the working process. A shaft sleeve 34 is provided between the drive column 31 and the column mouth 23, and the function of the shaft sleeve 34 is to reduce friction and improve the flexibility and durability of the rotating parts. The shaft sleeve 34 is usually made of wear-resistant material to ensure good performance during long-term operation. In addition, the outer end of the drive column 31 is provided with a spline assembly port 33, which is a structure with multiple parallel key teeth, which allows the drive column to be accurately connected to the output shaft of a power device such as a motor or an engine. This connection method not only transmits torque, but also ensures the concentricity between the power device and the drive column, thereby ensuring the efficient and stable operation of the entire transmission system.

[0038] A sealing rubber ring 29 is installed in the sealing notch 25. The sealing rubber ring is usually made of rubber or other elastic materials and can effectively prevent leakage of liquid or gas. The installation position and size of the sealing rubber ring 29 must be accurate to ensure that it can fit tightly to achieve the best sealing effect.

[0039] The driving column 31 and the transmission column 35 are important components for transmitting power in the mechanical device. They are both covered with positioning column sleeves 37, which not only play a positioning role, but also can protect the driving column and the transmission column from the influence of the external environment, such as dust, moisture, etc., and can also reduce friction and extend the service life of the components. The positioning column sleeve 37 is rotatably connected with the driving column 31 and the transmission column 35, which means that they can rotate relative to each other. This design allows power to be transmitted between different components while maintaining the stability and accuracy of the components.

[0040] The positioning column sleeve 37 is installed in the front cover seat 21 and the rear cover seat 24. These two cover seats are fixed parts of the mechanical device. They provide structural support for the entire device and are usually used to fix and protect internal mechanical components.

[0041] Among them, side baffles 38 are installed inside the front cover seat 21 and the rear cover seat 24. The design of these side baffles 38 is very clever, and two through-holes 39 are set through them. These two through-holes 39 not only add a unique appearance to the side baffles 38, but also play an important role in practical applications. The design position and size of the through-holes 39 are carefully calculated to ensure that they can perfectly match the insertion of the positioning column sleeve 37.

[0042] The positioning column sleeve 37 is inserted into the through opening 39 to play a role in positioning and fixing. The insertion of the positioning column sleeve 37 not only ensures the stability of the side baffle 38, but also prevents it from moving or falling off during use. This design makes the entire structure more stable and also improves the durability and reliability of the product.

[0043] In addition, the coordinated use of the side baffle 38 and the positioning column sleeve 37 can also effectively protect the internal components and prevent dust, dirt or other foreign matter from entering, thereby ensuring the normal operation and service life of the equipment.

[0044] Among them, the corners of the gear housing 11 are provided with through holes 16, the corners of the front cover seat 21 and the rear cover seat 24 are provided with stud holes 26 at the same positions, and studs 27 are installed in the stud holes 26 and the through holes 16, and gaskets 28 are mounted on the studs 27. The studs 27 are a common fastener, which passes through the through holes 16 of the gear housing 11 and the stud holes 26 of the front and rear cover seats, thereby firmly connecting these components together. In order to improve the reliability of the connection and reduce wear, gaskets 28 are mounted on the studs 27. Gaskets 28 are a kind of flat washers, which are used to disperse pressure and prevent the studs 27 from directly acting on the metal surface to cause damage. At the same time, they can also fill the small unevenness between the connecting parts to ensure the tightness and sealing of the connection.

[0045] The working principle and use process of the present invention: the driving column 31 is connected to the output shaft of the power device such as a motor or an engine through the spline assembly port 33 to ensure the transmission of power. When the motor is started, the power is transmitted to the driving column 31 through the spline assembly port 33, thereby driving the gear in the gear housing 11 to rotate.

[0046] The micro motor 46, as the core component of flow regulation, controls the rotation speed and direction of rotation to precisely control the rotation of the bevel gear 47, thereby affecting the movement of the bevel gear ring 48. The meshing of the bevel gear ring 48 with the bevel gear 47 then drives the movement of the control plate 43. Due to the precise matching of the control plate 43 with the guide column head 44 and the guide strip 45, the flow control mechanism can adjust the flow through the liquid inlet interface 14 as needed.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0048] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise gear pump with adjustable pressure, characterized in that: The invention comprises a gear housing (11), wherein interface seats (12) are provided on both sides of the gear housing (11), wherein the two interface seats (12) are respectively provided with a liquid discharge interface (13) and a liquid inlet interface (14), wherein a gear cavity (15) is provided inside the gear housing (11), wherein a front cover seat (21) is installed at the front end of the gear housing (11), wherein a column opening (23) is provided on the front cover seat (21), wherein a rear cover seat (24) is installed at the rear end of the gear housing (11), wherein the front cover seat (21) and the rear cover seat (24) A sealing notch (25) is provided on the inner wall relative to the front cover seat (21), a column opening (23) is provided through the front cover seat (21), a driving column (31) is connected in the column opening (23), a lower gear (32) is installed on the driving column (31), the lower gear (32) is located in the gear cavity (15), a transmission column (35) is provided above the lower gear (32), an upper gear (36) is installed on the transmission column (35), and the upper gear (36) is meshed with the lower gear (32); A flow control seat (4) is installed outside the liquid inlet interface (14), and a flow control mechanism is installed inside the flow control seat (4). The flow control mechanism comprises a rear ring plate (41) and a front ring plate (42). The inner wall of the rear ring plate (41) is provided with a plurality of guide grooves (411) along the circumferential direction of the ring opening, and the front ring plate (42) is provided with a plurality of guide openings (421) through-through along the circumferential direction of the ring opening. The plurality of guide openings (421) correspond to the guide grooves (411) one by one. A plurality of control plates (43) are arranged between the front ring plate (41) and the rear ring plate (42). The plurality of control plates (43) are arranged in a circular shape. A guide column head (44) is installed at the front end of each control plate (43), and a guide strip (45) is installed at the rear end. The guide column head (44) extends into the guide opening (421) and is slidably connected thereto. The guide strip (45) extends into the guide groove (411) and is also slidably connected thereto.

2. A low-noise gear pump with adjustable pressure according to claim 1, characterized in that: The sides of adjacent control sheets (43) are precisely fitted together to facilitate synchronous linkage of a plurality of control sheets (43), and the rear ring plate (41) is rotatably connected to the flow control seat (4).

3. The low-noise gear pump with adjustable pressure according to claim 1, characterized in that: A micro motor (46) is installed in the flow control seat (4), the output end of the micro motor (46) is connected to a bevel gear (47), a bevel gear ring (48) is installed on the back of the rear ring plate (41), and the bevel gear (47) is meshingly connected with the bevel gear ring (48).

4. The low-noise gear pump with adjustable pressure according to claim 1, characterized in that: The front cover seat (21) is provided with fixing recesses (22) on both sides for fixing, a shaft sleeve (34) is provided between the driving column (31) and the column opening (23), and a spline assembly opening (33) is provided at the outer end of the driving column (31) for connecting to a power device.

5. The low-noise gear pump with adjustable pressure according to claim 1, characterized in that: A sealing rubber ring (29) is installed in the sealing notch (25); a positioning column sleeve (37) is sleeved on the outside of the driving column (31) and the transmission column (35) and is rotatably connected thereto; the positioning column sleeve (37) is installed in the front cover seat (21) and the rear cover seat (24).

6. The low-noise gear pump with adjustable pressure according to claim 5, characterized in that: A side baffle (38) is installed inside the front cover seat (21) and the rear cover seat (24), and two through-holes (39) are provided through the side baffle (38), and the positioning column sleeve (37) is inserted into the through-holes (39).

7. The low-noise gear pump with adjustable pressure according to claim 1, characterized in that: A through hole (16) is provided at the corner of the gear housing (11), and a stud opening (26) is provided at the same position at the corner of the front cover seat (21) and the rear cover seat (24). A stud (27) is installed in the stud opening (26) and the through hole (16), and a gasket (28) is mounted on the stud (27).

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