A high-viscosity dispensing gear pump

Abstract

This utility model belongs to the field of gear pump technology, and particularly relates to a high-viscosity dispensing gear pump, comprising: a pump body, on which an oil chamber, an oil inlet channel, and an oil outlet channel are provided, the oil inlet channel, the oil chamber, and the oil outlet channel being sequentially connected; a conveying gear set, the conveying gear set including a main gear and a secondary gear, the main gear and the secondary gear being rotatably disposed in the oil chamber and meshing with each other; a pump cover, the pump cover being connected to the pump body by fasteners for sealing the oil chamber; and several flow dividers, disposed in the oil chamber and located between the conveying gear set and the oil inlet channel. The beneficial effect of this utility model is that after the high-viscosity liquid is squeezed into the suction chamber under high pressure, it will come into contact with the flow dividers, and the flow dividers will cut and divide the high-viscosity liquid, reducing the impact force of the fluid, thereby reducing the pressure on the gears, reducing gear wear, and effectively extending the service life of the gear pump.

Description

Technical Field

[0001] This utility model belongs to the field of gear pump technology, and in particular relates to a high viscosity dispensing gear pump. Background Technology

[0002] A gear pump is a rotary pump that transports or pressurizes liquids by relying on the change and movement of the working volume formed between the pump cylinder and meshing gears. A gear pump generally consists of two gears, a pump body, and front and rear covers. Internally, it forms an intake chamber and an exhaust chamber, separated by the meshing line of the two gears. When the gears rotate, the volume of the space on the disengaged side increases, creating a vacuum that draws in the liquid. Conversely, the volume of the space on the meshing side decreases, forcing the liquid into the pipeline.

[0003] Currently, traditional gear pumps are suitable for conveying low-viscosity media. If a traditional gear pump is used to convey a high-viscosity media, the liquid generally needs to be kept at a high pressure to be drawn into the gear pump. However, the high pressure at the inlet has a greater impact on the gears, making the gears prone to uneven force during rotation under pressure, which causes structural wear and affects service life. Furthermore, when the high-pressure fluid flows in the pump body, the gear resistance increases, which can easily lead to increased gear friction, resulting in problems such as pump body overheating, reduced efficiency, or even damage. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned technical problems by providing a high-viscosity dispensing gear pump.

[0005] In view of this, the present invention provides a high-viscosity dispensing gear pump, comprising:

[0006] The pump body is equipped with an oil chamber, an oil inlet channel, and an oil outlet channel, which are connected in sequence.

[0007] The conveying gear set includes a main gear and a secondary gear, which are rotatably mounted in the oil chamber and mesh with each other;

[0008] Pump cover, which is connected to the pump body by fasteners, is used to cover the oil chamber;

[0009] Several diverting components are disposed within the oil cavity and located between the conveying gear set and the oil inlet channel.

[0010] Furthermore, the oil inlet channel has a conical structure.

[0011] Furthermore, the pump body is provided with several heat dissipation holes, and the pump cover is provided with several vent holes, with the vent holes and heat dissipation holes connected in a corresponding manner.

[0012] Furthermore, it also includes a sealing ring, which is located between the pump cover and the pump body and has a racetrack-shaped structure.

[0013] Furthermore, it also includes a locating pin, which is installed on the pump body and penetrates the pump cover.

[0014] Furthermore, it also includes an oil inlet plate, which has an oil inlet.

[0015] The pump body and pump cover are connected to the oil inlet plate by fasteners, and the oil inlet and oil inlet channel are kept in contact.

[0016] Furthermore, it also includes a positioning block, which is set on the pump body and has a through-hole structure.

[0017] The oil inlet is provided with a positioning groove, and the positioning block and the positioning groove are engaged. The oil inlet and the oil inlet channel are connected by a through hole structure.

[0018] The beneficial effects of this utility model are:

[0019] 1. When high-viscosity liquid is forced into the suction chamber under high pressure, it will come into contact with the flow divider. The flow divider cuts and divides the high-viscosity liquid, reducing the impact force of the fluid, thereby reducing the pressure on the gears, reducing gear wear, and effectively extending the service life of the gear pump.

[0020] 2. The oil inlet channel has a conical structure, which improves the self-priming performance of the suction chamber, allowing high-viscosity liquids to enter the suction chamber more concentratedly and effectively, preventing material accumulation.

[0021] 3. Several heat dissipation holes are also provided on the pump body, and an exhaust hole connected to the heat dissipation holes is provided on the pump cover. Through the heat dissipation holes and the exhaust hole, the heat in the oil chamber can be discharged to the outside of the pump body, preventing the oil chamber temperature from being too high and affecting the life of the gear pump. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the structure of this utility model;

[0024] Figure 3 This is a cross-sectional view of the internal structure of this utility model;

[0025] Figure 4 This is a cross-sectional view of the internal structure of this utility model from another perspective;

[0026] The markings in the diagram represent: 1. Pump body; 2. Oil chamber; 3. Oil inlet channel; 4. Oil outlet channel; 5. Main gear; 6. Secondary gear; 7. Pump cover; 8. Flow divider; 9. Heat dissipation hole; 10. Sealing ring; 11. Positioning pin; 12. Oil inlet plate; 13. Positioning block; 14. Exhaust hole. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] Example 1:

[0030] This embodiment provides a high-viscosity dispensing gear pump, comprising:

[0031] Pump body 1, with an oil chamber 2, an oil inlet channel 3 and an oil outlet channel 4 provided on the pump body 1, the oil inlet channel 3 and the oil chamber 2 and the oil outlet channel 4 being connected in sequence;

[0032] The conveying gear set includes a main gear 5 and a secondary gear 6, which are rotatably disposed in the oil chamber 2 and mesh with each other.

[0033] Pump cover 7 is connected to pump body 1 by fasteners and is used to cover oil chamber 2;

[0034] Several diverting components 8 are disposed in the oil cavity 2 and located between the conveying gear set and the oil inlet channel 3.

[0035] In this technical solution, an oil chamber 2 is provided on the pump body 1. The conveying gear set includes a main gear 5 and a secondary gear 6, which are disposed in the oil chamber 2 and mesh with each other. Rotatable shafts of the main gear 5 and secondary gear 6 are provided on the pump body 1 to drive the main gear 5 and secondary gear 6 to rotate, respectively. The pump cover 7 is connected to the pump body 1 by multiple fasteners to seal the oil chamber 2, thus forming two sealed spaces inside the gear pump. Oil seals are also provided on the main gear 5 shaft and the secondary gear 6 shaft to ensure the sealing between the shaft and the pump body 1, and between the shaft and the pump cover 7.

[0036] An oil inlet channel 3 and an oil outlet channel 4 are provided on the pump body 1. The sealed space between the conveying gear set and the oil inlet channel 3 is the suction chamber, and the sealed space between the conveying gear set and the oil outlet channel 4 is the discharge chamber. Several diverting components 8 are provided in the suction chamber. The diverting components 8 can be baffle pins, which are integrally connected in the oil chamber 2.

[0037] Through the above structural design, after the high-viscosity liquid is squeezed into the suction chamber under high pressure, it will come into contact with the flow divider 8. The flow divider 8 is used to cut and divide the high-viscosity liquid, reduce the impact force of the fluid, thereby reducing the pressure on the gears, reducing gear wear, and effectively extending the service life of the gear pump.

[0038] Furthermore, the oil inlet channel 3 has a conical structure. This structural design allows the connecting aperture between the oil inlet channel 3 and the oil chamber 2 to be smaller than the connecting aperture between the oil inlet channel 3 and the outside of the pump body 1. This structural design can significantly improve the self-priming performance of the suction chamber, allowing high-viscosity liquids to enter the suction chamber more concentratedly and effectively, preventing material accumulation.

[0039] Furthermore, the pump body 1 is provided with several heat dissipation holes 9, and the pump cover 7 is provided with several vent holes 14, with each vent hole 14 corresponding to and connected to the heat dissipation holes 9. The heat dissipation holes 9 are distributed around the oil chamber 2, and the vent holes 14 penetrate the pump cover 7 and are connected to the oil chamber 2. Due to the high viscosity of the grease, the gear friction increases, generating heat during operation. By providing heat dissipation holes 9, the heat in the oil chamber 2 can be transferred to the heat dissipation holes 9 and discharged to the outside of the pump body 1 through the vent holes 14, preventing the oil chamber 2 from overheating and affecting the life of the gear pump. In addition, both the main and auxiliary gears 6 are made of high-strength, wear-resistant, and high-temperature-resistant materials, such as titanium alloy, and the tooth profile pressure angle is 18° to enhance gear stability.

[0040] Furthermore, it also includes a sealing ring 10, which is disposed between the pump cover 7 and the pump body 1 and has a racetrack-shaped structure. A racetrack-shaped mounting groove is provided on the pump body 1, and the sealing ring 10 is disposed in the mounting groove. When the pump cover 7 is placed on the pump body 1, both sides of the sealing ring 10 are tightly attached to the pump cover 7 and the pump body 1, respectively, to achieve a sealing effect. Designing the sealing ring 10 as a racetrack shape can better fit the peripheral shape of the oil cavity 2, reducing material production input while ensuring a sealing effect, resulting in higher economic benefits.

[0041] Furthermore, it also includes a positioning pin 11, which is installed on the pump body 1 and passes through the pump cover 7. A connecting hole is provided on the pump cover 7 for inserting and engaging with the positioning pin 11. When the pump cover 7 is placed on the pump body 1, the positioning pin 11 and the connecting hole are inserted and engaged. Then, the pump cover 7 and the pump body 1 are locked and fixed by setting fasteners. By setting the positioning pin 11, the installation of the pump cover 7 on the pump body 1 can play a positioning role, improving the ease of installation.

[0042] Example 2:

[0043] This embodiment provides a high-viscosity dispensing gear pump, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0044] Furthermore, it also includes an oil inlet plate 12, on which an oil inlet is provided;

[0045] The pump body 1 and the pump cover 7 are connected to the oil inlet plate 12 by fasteners to keep the oil inlet and oil inlet channel 3 connected.

[0046] In this technical solution, the external pipeline is connected to the oil inlet plate 12, which is connected to the gear pump by fasteners, thus connecting the external pipeline and the gear pump. When disassembling or replacing the gear pump, only the oil inlet plate 12 and the gear pump need to be disassembled and separated, without touching the pipeline to avoid damage. At the same time, it achieves plug-and-play functionality, greatly reducing equipment downtime.

[0047] Furthermore, it also includes a positioning block 13, which is disposed on the pump body 1 and has a through-hole structure; wherein, a positioning groove is provided on the oil inlet, and the positioning block 13 and the positioning groove are engaged, and the oil inlet and the oil inlet channel 3 are connected through the through-hole structure. This structural design plays a positioning role in the connection of the oil inlet plate 12 on the pump body 1, effectively improving the ease of installation of the gear pump in the delivery pipeline. The embodiments of this application have been described above with reference to the accompanying drawings. In the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many forms under the guidance of this application without departing from the spirit and scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A high-viscosity dispensing gear pump, characterized in that, include: The pump body (1) is provided with an oil chamber (2), an oil inlet channel (3) and an oil outlet channel (4), which are connected in sequence. A conveying gear set, the conveying gear set including a main gear (5) and a secondary gear (6), the main gear (5) and the secondary gear (6) being rotatably disposed in the oil chamber (2) and meshing with each other; Pump cover (7), which is connected to the pump body (1) by fasteners and is used to cover the oil chamber (2). A plurality of diverting components (8) are disposed in the oil cavity (2) and located between the conveying gear set and the oil inlet channel (3).

2. The high-viscosity dispensing gear pump according to claim 1, characterized in that, The oil inlet channel (3) has a conical structure.

3. A high-viscosity dispensing gear pump according to claim 1, characterized in that, The pump body (1) is provided with several heat dissipation holes (9), and the pump cover (7) is provided with several exhaust holes (14). The exhaust holes (14) and the heat dissipation holes (9) are connected in a one-to-one correspondence.

4. A high-viscosity dispensing gear pump according to claim 1, characterized in that, It also includes a sealing ring (10), which is disposed between the pump cover (7) and the pump body (1) and has a racetrack-shaped structure.

5. A high-viscosity dispensing gear pump according to claim 1, characterized in that, It also includes a positioning pin (11), which is installed on the pump body (1) and passes through the pump cover (7).

6. A high-viscosity dispensing gear pump according to claim 1, characterized in that, It also includes an oil inlet plate (12), on which an oil inlet is provided; The pump body (1) and pump cover (7) are connected to the oil inlet plate (12) by fasteners, and the oil inlet and oil inlet channel (3) are kept in communication.

7. A high-viscosity dispensing gear pump according to claim 6, characterized in that, It also includes a positioning block (13), which is disposed on the pump body (1) and has a through hole structure. The oil inlet is provided with a positioning groove, the positioning block (13) and the positioning groove are engaged, and the oil inlet and the oil inlet channel (3) are connected by a through hole structure.

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