Magnetic drive gear pump capable of being quickly cleaned on line

Abstract

The utility model provides an on-line quick cleaning magnetic drive gear pump, which comprises a pump cover, a pump body, an inner magnetic drive, a shielding case, a gear cavity, an inlet flow channel and an outlet flow channel arranged on the pump body, an inlet and an outlet arranged on the side wall of the pump body, and a pressure regulating valve assembly comprising a regulating rod, a spring and a sealing valve, an installation screw hole is formed in the pump cover, the external thread section is connected to the installation screw hole, the adjusting rod is movably arranged in the inflow channel, the shielding case is provided with an inner cavity, an inflow channel cleaning hole is formed between the inflow channel and the inner cavity in a communicating mode, an outflow channel cleaning hole is formed between the outflow channel and the inner cavity in a communicating mode, and the spring abuts against the position between the bottom end of the adjusting rod and the top end of the sealing valve. The sealing valve is movably arranged in the inflow channel and blocks the input end of the inflow channel cleaning hole under the elastic force effect of the spring, the interior of the shielding cover can be cleaned, different media can be extracted, and various use requirements are met.

Description

Technical Field

[0001] This utility model relates to the field of gear pump technology, and more particularly to a magnetically driven gear pump for online rapid cleaning. 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. It consists of two gears, a pump body, and front and rear covers forming two enclosed spaces. 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. The suction and discharge chambers are separated by the meshing line of the two gears. The pressure at the pump outlet depends entirely on the resistance at the outlet. Technically, a gear pump is also called a positive displacement device, much like a piston in a cylinder. When one gear enters the fluid space of another gear, because the liquid is incompressible, the liquid and the gear cannot occupy the same space simultaneously, thus mechanically squeezing the liquid out. Due to the continuous meshing of the gears, this phenomenon occurs continuously, providing a continuous discharge at the pump outlet. The amount discharged per revolution of the pump is the same. As the drive shaft rotates continuously, the pump continuously discharges fluid. The pump's flow rate is directly related to the pump's rotational speed.

[0003] In the food machinery industry, magnetically driven gear pumps are frequently used to transport liquids or fluids such as milk, cream, and beverages. The biggest problem with traditional magnetically driven gear pumps is that, because the inner cavity of the shield is a semi-enclosed space, the medium cannot circulate after entering the shield, easily accumulating inside. This makes it difficult to clean the inner cavity of the shield during cleaning, resulting in media residue. This makes them unsuitable for applications requiring the switching of multiple media. Summary of the Invention

[0004] The problem to be solved by this utility model is to provide an online rapid cleaning magnetic drive gear pump that can clean the inside of the shield and can be used to pump different media to meet various application needs.

[0005] To solve the above-mentioned technical problems, this utility model provides an online rapid cleaning magnetically driven gear pump, comprising a pump cover, a pump body, an internal magnetic drive, and a shield. The pump body is provided with a gear cavity, an inlet channel and an outlet channel communicating with the gear cavity. The side wall of the pump body is provided with an inlet and an outlet channel communicating with the inlet channel and the outlet channel respectively. It also includes a pressure regulating valve assembly, which includes an adjusting rod, a spring, and a sealing valve. The adjusting rod is provided with an external thread section, and the pump cover is provided with a mounting screw hole. The external thread section is connected to the mounting screw hole. The adjusting rod is movably disposed in the inlet channel. The shield has an inner cavity. An inlet channel cleaning hole is provided between the inlet channel and the inner cavity. An outlet channel cleaning hole is provided between the outlet channel and the inner cavity. The spring abuts between the bottom end of the adjusting rod and the top end of the sealing valve. The sealing valve is movably disposed in the inlet channel and blocks the input end of the inlet channel cleaning hole under the elastic force of the spring.

[0006] Preferably, an annular groove is provided on the side wall of the mounting screw hole, and a sealing ring fitted on the adjusting rod is provided on the annular groove.

[0007] Preferably, the bottom end of the adjusting rod is provided with a first cylindrical part, the top end of the sealing valve is provided with a second cylindrical part, and the two ends of the spring are respectively sleeved on the first cylindrical part and the second cylindrical part.

[0008] Preferably, the bottom end of the sealing valve is cone-shaped.

[0009] Preferably, a limiting nut is connected to the external thread section.

[0010] Preferably, the top of the adjusting rod is provided with a slot.

[0011] The beneficial effects of this utility model are as follows: This utility model provides a magnetically driven gear pump for online rapid cleaning. When the gear pump is in a non-cleaning state, the adjusting rod is in a tightened state, the spring is in a highly compressed state, and the sealing valve is subjected to a large thrust from the spring toward the inlet cleaning hole. When the medium is being pumped, the medium flows through the inlet, inlet channel, gear cavity, and outlet channel in sequence and is discharged through the outlet. Some of the medium entering the outlet channel will enter the inner cavity. The pressure of the medium entering the inner cavity cannot force the sealing valve to open from the input end of the inlet cleaning hole. When cleaning the inside of the gear pump is required, first block the outlet. The adjusting rod can be rotated to loosen it appropriately according to the fluidity of the medium. At this time, the spring is in a relatively relaxed state, and the sealing valve is subjected to a small thrust from the spring towards the inlet cleaning hole. Clean water is delivered into the inlet channel through the inlet. The clean water flows sequentially through the inlet, inlet channel, gear cavity, outlet channel, and outlet cleaning hole, and all enters the inner cavity. When the pressure of the clean water in the inner cavity is greater than the spring's thrust on the sealing valve, the sealing valve will be opened, and the input end of the inlet cleaning hole will be open. The clean water in the inner cavity re-enters the inlet channel through the inlet cleaning hole, forming a water circulation between the inlet channel, gear cavity, outlet channel, outlet cleaning hole, inner cavity, and inlet cleaning hole. This achieves cleaning of the inner cavity of the shielding cover. The gear pump can be used for extracting different media, ensuring the hygiene of the gear pump's interior and meeting various usage requirements. Attached Figure Description

[0012] Figure 1 A schematic diagram illustrating the external structure of this utility model is provided.

[0013] Figure 2 A cross-sectional view of the present invention is shown.

[0014] Reference numerals: 1. Pump cover; 10. Mounting screw hole; 2. Pump body; 20. Gear cavity; 21. Inlet channel; 22. Outlet channel; 23. Inlet; 24. Inlet channel cleaning hole; 25. Outlet channel cleaning hole; 26. Internal magnetic drive; 3. Shielding cover; 4. Inner cavity; 40. Pressure regulating valve assembly; 5. Adjusting rod; 50. External thread section; 500. First cylindrical part; 501. I-shaped groove; 502. Spring; 51. Sealing valve; 52. Second cylindrical part; 520. Sealing ring; 6. Limit nut; 7. Detailed Implementation

[0015] 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.

[0016] 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.

[0017] refer to Figure 1-2 .

[0018] This utility model provides an online rapid cleaning magnetically driven gear pump, comprising a pump cover 1, a pump body 2, an internal magnetic drive 3, and a shielding cover 4. The pump body 2 is provided with a gear cavity 20, an inlet channel 21 communicating with the gear cavity 20, and an outlet channel 22. The side wall of the pump body 2 is provided with an inlet 23 and an outlet 24 communicating with the inlet channel 21 and the outlet channel 22, respectively. It also includes a pressure regulating valve assembly 5, which includes an adjusting rod 50, a spring 51, and a sealing valve 52. The adjusting rod 50 is provided with an external thread section 500. The pump cover 1 is provided with… The mounting screw hole 10 has an external thread section 500 connected to it. The adjusting rod 50 is movably disposed in the inlet channel 21. The shield 4 has an inner cavity 40. An inlet channel cleaning hole 25 is provided between the inlet channel 21 and the inner cavity 40. An outlet channel cleaning hole 26 is provided between the outlet channel 22 and the inner cavity 40. The spring 51 abuts against the bottom end of the adjusting rod 50 and the top end of the sealing valve 52. The sealing valve 52 is disposed in the inlet channel 21 and blocks the input end of the inlet channel cleaning hole 25 under the elastic force of the spring 51.

[0019] Its working principle is as follows: when the gear pump is in the non-cleaning state, the adjusting rod 50 is in the tightened state, the spring 51 is in the highly compressed state, and the sealing valve 52 is subjected to a large thrust from the spring 51 toward the inlet cleaning hole 25. When the medium is being drawn, the medium flows through the inlet 23, the inlet channel 21, the gear cavity 20, and the outlet channel 22 in sequence and is discharged through the outlet 24. Some of the medium entering the outlet channel 22 will enter the inner cavity 40. The pressure of the medium entering the inner cavity 40 is insufficient to open the sealing valve 52 from the input end of the inlet cleaning hole 25. When cleaning the inside of the gear pump is required, first block the outlet. Adjust the regulating rod 50 according to the fluidity of the medium to loosen it appropriately. At this time, the spring 51 is in a relatively relaxed state, and the sealing valve 52 receives a small thrust from the spring 51 towards the inlet cleaning hole 25. Clean water is then supplied to the inlet channel 21 through the inlet 23. The clean water flows sequentially through the inlet 23, inlet channel 21, gear cavity 20, outlet channel 22, and outlet cleaning hole 26, and all enters the inner cavity 40. When the pressure of the clean water in the inner cavity 40 is high... When the spring 51 pushes the sealing valve 52, the sealing valve 52 will be opened, and the input end of the inlet cleaning hole 25 will be in the open state. The clean water in the inner cavity 40 will re-enter the inlet channel 21 through the inlet cleaning hole 25, forming a water circulation between the inlet channel 21, gear cavity 20, outlet channel 22, outlet cleaning hole 26, inner cavity 40, and inlet cleaning hole 25. This achieves the cleaning of the inner cavity 40 of the shield 4. The gear pump can be used for the extraction of different media, ensuring the hygiene of the gear pump and meeting various usage requirements.

[0020] Based on the above embodiments, an annular groove is provided on the side wall of the mounting screw hole 10, and a sealing ring 6 is provided on the annular groove and sleeved on the adjusting rod 50 to improve the sealing between the adjusting rod 50 and the mounting screw hole 10 and prevent the medium entering the inlet channel 21 from leaking through the mounting screw hole 10.

[0021] Based on the above embodiments, the bottom end of the adjusting rod 50 is provided with a first cylindrical part 501, the top end of the sealing valve 52 is provided with a second cylindrical part 520, and the two ends of the spring 51 are respectively sleeved on the first cylindrical part 501 and the second cylindrical part 520, which limit the spring 51 and prevent the spring 51 from deviating.

[0022] Based on the above embodiments, the bottom end of the sealing valve 52 is set to be conical. The pressure of the medium entering the inlet channel 21 causes the sealing valve 52 to seal the inlet channel cleaning hole 25. When the spring force of the spring 51 on the sealing valve 52 is small, the pressure of the medium in the inlet channel cleaning hole 25 will push the sealing valve 52 open from the input end of the inlet channel cleaning hole 26.

[0023] Based on the above embodiments, a limiting nut 7 is connected to the external thread section 500, which can limit the movement of the adjusting rod 50 toward the inlet channel 21 and avoid damaging the sealing valve 52.

[0024] Based on the above embodiments, a slot 502 is provided at the top of the adjusting rod 50 to facilitate the rotation of the adjusting rod 50 using a flathead screwdriver.

[0025] 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 magnetically driven gear pump for online rapid cleaning, comprising a pump cover, a pump body, an internal magnetic drive, and a shielding cover, wherein the pump body is provided with a gear cavity, an inlet channel and an outlet channel communicating with the gear cavity, and the side wall of the pump body is provided with an inlet and an outlet respectively communicating with the inlet channel and the outlet channel, characterized in that, It also includes a pressure regulating valve assembly, which includes an adjusting rod, a spring, and a sealing valve. The adjusting rod has an external thread section, and the pump cover has a mounting screw hole. The external thread section is connected to the mounting screw hole. The adjusting rod is movably disposed in the inlet channel. The shielding cover has an inner cavity. An inlet channel cleaning hole is provided between the inlet channel and the inner cavity. An outlet channel cleaning hole is provided between the outlet channel and the inner cavity. The spring abuts against the bottom end of the adjusting rod and the top end of the sealing valve. The sealing valve is movably disposed in the inlet channel and blocks the input end of the inlet channel cleaning hole under the elastic force of the spring.

2. The magnetically driven gear pump for online rapid cleaning according to claim 1, characterized in that, An annular groove is provided on the side wall of the mounting screw hole, and a sealing ring is provided on the annular groove and fitted onto the adjusting rod.

3. The magnetically driven gear pump for online rapid cleaning according to claim 2, characterized in that, The bottom end of the adjusting rod is provided with a first cylindrical part, the top end of the sealing valve is provided with a second cylindrical part, and the two ends of the spring are respectively sleeved on the first cylindrical part and the second cylindrical part.

4. The magnetically driven gear pump for online rapid cleaning according to claim 3, characterized in that, The bottom end of the sealing valve is cone-shaped.

5. The magnetically driven gear pump for online rapid cleaning according to claim 4, characterized in that, A limit nut is connected to the external thread section.

6. The magnetically driven gear pump for online rapid cleaning according to claim 5, characterized in that, The top of the adjusting rod is provided with a slot.

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