Dual shell magnetic cylinder bag pump

Abstract

The application discloses a double-shell magnetic cylinder bag pump, and relates to the technical field of cylinder bag pumps, which comprises a cylinder bag pump shell, and a conveying auxiliary mechanism arranged below the cylinder bag pump shell, wherein the conveying auxiliary mechanism comprises an assembly pipeline; when the cylinder bag pump shell is in an operation process, the conveying auxiliary mechanism is switched to a convex state, and the assembly pipeline is used for medium conveying at a position higher than the bottom surface of the cylinder bag pump shell; the conveying auxiliary mechanism can be switched to the convex state, in which state, the flared nozzle is higher than the bottom of the inner layer cavity, so that impurities deposited at the bottom of the inner layer cavity can be prevented from being sucked into the medium conveying flow channel, the abrasion of the internal components of the pump caused by the impurities is reduced, the stability of the pump during the conveying of special media, such as easily-vaporized media and high-pressure media, is ensured, and the risk of cavitation is reduced; the conveying auxiliary mechanism can be switched to a concave state, in which state, the flared nozzle is lower than the bottom of the inner layer cavity, so that the cleaning medium can be directly aimed at the dead corner area at the bottom of the pump body, and the easily-crystallized and easily-deposited media remaining after operation can be flushed.

Description

Technical Field

[0001] This invention relates to the field of bag pump technology, specifically to a double-casing magnetic bag pump. Background Technology

[0002] Double-casing bag pumps are mainly used in the power, offshore oil extraction, natural gas and chemical industries. They are especially suitable for conveying media that are easily vaporized or contain a small amount of solid particles (such as liquefied gas, propylene, liquid ammonia, etc.). They can also convey clean or corrosive media with high pressure and low flow rate (such as boiler feedwater, deep-sea crude oil). Their double-casing design can enhance protection and adapt to harsh working conditions such as high pressure, high salt and humidity and easily vaporized media, and can achieve reliable transportation without leakage for a long time.

[0003] However, the existing technology still has the following defects in practical use: 1. The lower medium inlet pipe of the existing double-casing bag pump is mostly a simple straight-through structure. The medium mainly relies on its own gravity and system pressure to flow into the pump cavity naturally. When conveying easily vaporized media such as high-pressure liquefied gas (whose saturated vapor pressure is extremely sensitive to pressure changes) and high-temperature fluids (temperature increases will reduce the critical pressure of the medium to resist vaporization), the pressure of the medium is difficult to be effectively supplemented and increased through the flow channel structure before entering the pump cavity. It is very easy for the pressure to approach or even fall below the saturated vapor pressure of the medium under the current operating conditions in a local area of ​​the flow channel, which lays a hidden danger for the subsequent vaporization phenomenon in the pump cavity.

[0004] This direct delivery method makes the medium highly susceptible to vaporization due to insufficient local pressure in the flow channel before entering the impeller, generating a large number of bubbles. These bubbles, after entering the impeller with the medium, will rapidly collapse in the high-pressure area of ​​the impeller, causing cavitation. Cavitation not only causes strong vibration and noise in the pump body, but also causes high-frequency impact wear on key components such as the impeller and pump casing, severely shortening the service life of the equipment. At the same time, cavitation disrupts the continuity of medium flow, reduces the pump's volumetric efficiency and hydraulic efficiency, and thus affects the stable operation of the entire process system.

[0005] 2. In existing technologies, when the medium is introduced into the cavity, it generally flows at a stable pressure and uniform speed, which cannot form a local high-pressure scouring force. Therefore, fine solid particles are easy to adhere and accumulate on the surface of the filter screen pores, or flow around and enter through the gap formed between the filter screen and the pipe. At the same time, during the backwashing process, the flushing liquid can only be sprayed in one direction, which cannot cover the back of the filter screen, the edges and corners of the cavity, forming cleaning dead corners. In particular, the sealing surface where the filter screen is connected to the pipe and the recessed area at the bottom of the cavity are difficult for residual solid particles to be carried away by the flushing liquid. After long-term accumulation, it further affects the filtration effect.

[0006] Poor filtration can lead to unfiltered solid particles entering the pump chamber with the medium, causing continuous wear on core components such as impellers and sliding bearings. This not only shortens the service life of the components but also disrupts the stability of medium delivery. Furthermore, solid particles remaining in the dead corners after backflushing can cause secondary contamination of the subsequently transported medium, affecting the quality of the process products. On the other hand, the continuous accumulation of particles may clog filter holes or pipeline channels, leading to a sudden increase in inlet pressure and increasing the safety risks of pipeline rupture and medium leakage. In addition, frequent shutdowns for disassembly and cleaning are required, significantly increasing equipment maintenance costs and downtime losses.

[0007] Therefore, in view of this, the present invention proposes a double-shell magnetic bag pump to make up for and improve the deficiencies of the prior art. Summary of the Invention

[0008] To address the aforementioned technical problems, this invention provides a dual-casing magnetic bag pump, thereby resolving the technical issues raised in the background section.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a double-shell magnetic tubular bag pump, including a tubular bag pump shell, and a conveying auxiliary mechanism is provided below the tubular bag pump shell. The conveying auxiliary mechanism includes a flared nozzle. When the tubular bag pump shell is in operation, the conveying auxiliary mechanism switches to a raised state, and the flared nozzle conveys the medium above the bottom surface of the tubular bag pump shell. When the tubular bag pump shell is in the cleaning process, the conveying auxiliary mechanism switches to a recessed state, and the flared nozzle conveys the medium below the bottom surface of the tubular bag pump shell.

[0010] Furthermore, a drive module for providing operating power is installed on the top of the bag pump housing, an input pipe for conveying medium into the bag pump housing is installed on the bottom of the bag pump housing, and an output pipe for discharging medium to the outside of the bag pump housing is installed on the side of the bag pump housing. The assembled pipes are located between the bottom of the bag pump housing and the input pipe, forming a medium flow connection structure between the bag pump housing and the input pipe.

[0011] Furthermore, a telescopic structure is formed between the assembly pipe and the input pipe, which can be relatively telescopically coordinated. This telescopic structure is used to adjust the axial position of the assembly pipe and the input pipe, and the assembly pipe is the fixed end of the telescopic structure, whose position remains fixed during the operation and cleaning of the bag pump housing; the input pipe is the movable end of the telescopic structure, which can move linearly along the axial direction of the assembly pipe to adapt to the positional requirements of the conveying auxiliary mechanism in the convex and concave states.

[0012] Furthermore, the inner wall of the assembly pipe is fixedly connected with a threaded track, the spiral direction of which is consistent with the rotation trend of the medium, and the inner wall of the assembly pipe is uniformly fixedly connected with turbulence protrusions, which are located between the inclined intervals of the assembly pipe.

[0013] Furthermore, a flared nozzle is installed above the assembly pipe. The flared nozzle is generally funnel-shaped, wider at the top and narrower at the bottom. An external cylindrical chamber is fixedly connected to the outer wall of the flared nozzle. Diagonal support shafts are evenly installed between the external cylindrical chamber and the flared nozzle. The apex of the diagonal support shaft is fixedly connected to the flared nozzle, and the two fulcrums on both sides of the diagonal support shaft are fixedly connected to the external cylindrical chamber.

[0014] Furthermore, an inner cavity bottom with a cone apex facing upward and a cone bottom slidably connected to an outer circular chamber is installed below the casing of the bag pump. Sliding ribs are uniformly fixedly connected radially inside the inner cavity bottom. The height of the sliding ribs is lower than the normal liquid level inside the bag pump casing and smoothly transitions with the conical wall surface of the inner cavity bottom.

[0015] Furthermore, an integral buckle frame is fixedly connected to the lower surface of the external cylindrical chamber, and cylindrical shafts are uniformly fixedly connected to the end of the integral buckle frame away from the external cylindrical chamber. An adjustment base is installed below the integral buckle frame, and the adjustment base is rotatably connected to the bottom outer wall of the assembly pipe.

[0016] Furthermore, a three-dimensional arc-shaped protrusion is uniformly fixedly connected above the adjustment base at the position corresponding to the cylindrical shaft, and the end of the cylindrical shaft near the arc-shaped protrusion is a smooth spherical surface. An outer bottom ring is fixedly connected to the outer wall of the adjustment base, and a steering cam is fixedly connected to the outer wall of the outer bottom ring.

[0017] Furthermore, when the bag pump housing is in operation, the adjusting base rotates so that the cylindrical shaft is located at the top of the arc-shaped protrusion, and the flared nozzle is higher than the bottom of the inner cavity.

[0018] Furthermore, when the bag pump housing is in the cleaning process, the adjusting base rotates in the opposite direction, so that the cylindrical shaft is located at the bottom of the arc-shaped protrusion, and the flared nozzle is lower than the bottom of the inner cavity.

[0019] Compared with the prior art, the beneficial effects of the present invention are: (1) When the casing of the bag pump is in operation, the conveying auxiliary mechanism can be switched to the raised state. In this state, the flared nozzle is higher than the bottom of the inner cavity, which can prevent impurities deposited at the bottom of the inner cavity from being sucked into the medium conveying channel, reduce the wear of impurities on the internal components of the pump, and at the same time ensure the stability of conveying special media such as easily vaporized and high pressure, reduce the risk of cavitation. With the power output of the drive module, it can meet the needs of efficient and reliable medium conveying under operating conditions, without the need for frequent shutdowns and adjustments due to impurities or unstable conveying, thus improving the overall operating efficiency.

[0020] When the bag pump housing is being cleaned, the conveying auxiliary mechanism can be switched to a recessed state. In this state, the flared nozzle is lower than the bottom of the inner cavity, allowing the cleaning medium to be directly aimed at the dead corner area at the bottom of the pump body. This effectively flushes away any residual media that is prone to crystallization or deposition after operation, preventing residual media from accumulating at the bottom and causing blockage of the flow channel or corrosion of components. This significantly simplifies the cleaning process, shortens the cleaning time, lays a clean foundation for subsequent operation, and reduces potential malfunctions caused by residual issues.

[0021] Most importantly, the inner cavity bottom and the flared nozzle are tilted in the same direction and form a relatively integrated tilted structure, which is linked with the operating conditions. This design allows the equipment to achieve functional synergy in both operation and cleaning states: In the convex state during operation, the integrated tilted structure guides crystallization and impurities to gather outside the flared nozzle, and the high-positioned nozzle forms an obstruction to prevent impurities from entering the core flow channel; In the concave state during cleaning, the same tilted structure guides the accumulated impurities to slide down naturally, which is convenient for the cleaning medium to remove quickly. There is no need to design additional impurity interception or cleaning structures. The impurity protection during operation and the impurity removal during cleaning can be met simultaneously by simply switching states, which improves the flexibility of the equipment to adapt to different working conditions and reduces the overall design complexity.

[0022] (2) In actual operation, the threaded track fixed on the inner wall of the assembly pipeline has a spiral direction that is consistent with the rotation trend of the medium. When the medium enters from the bottom, it can guide the medium to form a rotating and upward flow state by coordinating the upward conveying force and the rotation force of the impeller inside the equipment. With the help of the combined force of centrifugal force and spiral propulsion, the inlet medium is pre-pressurized, which effectively increases the inlet pressure of the medium, making it more difficult for the medium to reach the saturated vapor pressure required for vaporization, thereby reducing the risk of medium vaporization. It can avoid the cavitation problem caused by bubbles generated by medium vaporization, reduce the wear of impeller, shell and other components in the pump by cavitation, and ensure the continuity and stability of the medium conveying process. It is especially suitable for conveying medium that is easy to vaporize and has high pressure. While simplifying the structure, it improves the adaptability and service life of the equipment under special working conditions.

[0023] (3) Among them, the turbulence protrusions between the inclined intermittent sections of the inner wall of the assembly pipeline can effectively break the laminar inertia of the medium and promote the formation of stronger turbulent mixing of the medium. This turbulence can not only enhance the pressure superposition effect of the spiral propulsion of the threaded track, but also accelerate the energy transfer inside the medium, avoid the local area from reaching the saturated vapor pressure due to excessively low pressure, and at the same time help disperse and dissolve the bubbles that may exist in the medium. It can suppress vaporization from both the aspects of "increasing pressure" and "eliminating cavitation cores" to ensure the stable transportation of easily vaporized media.

[0024] (4) Among them, the sliding ribs that are uniformly fixed radially inside the inner cavity bottom can be completely submerged in the medium and do not interfere with the gas phase space because their height is lower than the normal liquid level inside the bag pump housing. At the same time, the smooth transition design with the conical wall can avoid the sudden change in local resistance when the medium flows. Its core function is to effectively destroy the large-scale eddies that may be formed during the medium flow process, prevent the local low pressure at the center of the eddies from causing the medium to vaporize, and ensure the stable filling and flow of the medium in the pump cavity. In addition, the uniformly distributed structure can also help guide the medium to flow orderly along the conical wall, and avoid the medium from accumulating at the bottom of the cavity to form a dead zone. Whether it is transporting easily vaporized media during operation or covering the bottom of the cavity with cleaning media during cleaning, it can improve the stability and uniformity of the medium flow and reduce the risk of equipment failure. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the front view of the present invention.

[0026] Figure 2 This is a side view schematic diagram of the structure of the present invention.

[0027] Figure 3 This is a front-view stereoscopic structural diagram of the present invention.

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of the assembly pipeline of the present invention.

[0029] Figure 5 This is a three-dimensional structural diagram of the conveying auxiliary mechanism of the present invention.

[0030] Figure 6 This is an exploded view of a portion of the conveying auxiliary mechanism of the present invention.

[0031] Figure 7 This is a schematic diagram of the internal three-dimensional structure of the assembly pipe and the external cylindrical chamber of the present invention.

[0032] Figure 8 This is a three-dimensional structural diagram showing the positional relationship between the flared nozzle and the bottom of the inner cavity during infusion.

[0033] Figure 9 This is a schematic diagram of the planar structure of the delivery auxiliary mechanism in the infusion state of the present invention.

[0034] Figure 10 This is a three-dimensional structural diagram showing the positional relationship between the flared nozzle and the bottom of the inner cavity under the cleaning state of the present invention.

[0035] Figure 11 This is a schematic diagram of the planar structure of the conveying auxiliary mechanism under cleaning conditions according to the present invention.

[0036] The following are the labels in the diagram: 1. Bag pump housing; 11. Drive module; 12. Input pipe; 13. Output pipe; 2. Conveying auxiliary mechanism; 21. Assembly pipe; 2101. Threaded track; 2102. Turbulence protrusion; 22. Flared nozzle; 23. External cylindrical chamber; 2301. Diagonal support shaft; 24. Inner cavity bottom; 2401. Sliding rib; 25. Integrated fastening frame; 26. Adjusting base; 27. Outer bottom ring; 28. Steering cam shaft. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that the structure and working principle of the above-mentioned bag pump housing 1, drive module 11, input pipe 12, and output pipe 13 are prior art and will not be described again here.

[0038] Example 1: Please refer to Figure 1 - Figure 4 As shown, a double-shell magnetic bag pump includes a bag pump housing 1. A conveying auxiliary mechanism 2 is provided below the bag pump housing 1. The conveying auxiliary mechanism 2 includes a flared nozzle 22. When the bag pump housing 1 is in operation, the conveying auxiliary mechanism 2 switches to a raised state, and the flared nozzle 22 conveys the medium above the bottom surface of the bag pump housing 1. When the bag pump housing 1 is in the cleaning process, the conveying auxiliary mechanism 2 switches to a recessed state, and the flared nozzle 22 conveys the medium below the bottom surface of the bag pump housing 1.

[0039] It should be noted that a drive module 11 for providing operating power is installed on the top of the bag pump housing 1, an input pipe 12 for conveying medium into the bag pump housing 1 is installed on the bottom of the bag pump housing 1, and an output pipe 13 for discharging medium to the outside of the bag pump housing 1 is installed on the side of the bag pump housing 1. The assembly pipe 21 is located between the bottom of the bag pump housing 1 and the input pipe 12, forming a medium flow connection structure between the bag pump housing 1 and the input pipe 12.

[0040] Please refer to Figure 4 - Figure 7 As shown, the assembly pipe 21 and the input pipe 12 form a relatively telescopic fitting structure. This telescopic structure is used to adjust the axial position of the assembly pipe 21 and the input pipe 12. The assembly pipe 21 is the fixed end of the telescopic structure, and its position remains fixed during the operation and cleaning of the bag pump housing 1. The input pipe 12 is the moving end of the telescopic structure, which can move linearly along the axial direction of the assembly pipe 21 to adapt to the position requirements of the conveying auxiliary mechanism 2 in the raised and recessed states. The inner wall of the assembly pipe 21 is fixedly connected with a threaded track 2101. The spiral direction of the threaded track 2101 is consistent with the rotation trend of the medium. The inner wall of the assembly pipe 21 is uniformly fixedly connected with turbulence protrusions 2102, which are located between the inclined gaps of the assembly pipe 21.

[0041] It should be noted that a flared nozzle 22 is installed above the assembly pipe 21. The flared nozzle 22 is generally funnel-shaped with a wider top and a narrower bottom. An external cylindrical chamber 23 is fixedly connected to the outer wall of the flared nozzle 22. Diagonal support shafts 2301 are evenly installed between the external cylindrical chamber 23 and the flared nozzle 22. The apex of the diagonal support shaft 2301 is fixedly connected to the flared nozzle 22, and the two fulcrums of the diagonal support shaft 2301 are fixedly connected to the external cylindrical chamber 23. An inner cavity bottom 24 with the cone apex facing upward and the cone bottom slidingly connected to the external cylindrical chamber 23 is installed below the bag pump housing 1. Sliding ribs 2401 are evenly fixedly connected radially inside the inner cavity bottom 24. The height of the sliding ribs 2401 is lower than the normal liquid level inside the bag pump housing 1 and smoothly transitions with the conical wall of the inner cavity bottom 24.

[0042] It should be noted that an integral buckle frame 25 is fixedly connected to the lower surface of the external cylindrical chamber 23. A cylindrical shaft is uniformly fixedly connected to the end of the integral buckle frame 25 away from the external cylindrical chamber 23. An adjustment base 26 is installed below the integral buckle frame 25. The adjustment base 26 is rotatably connected to the bottom outer wall of the assembly pipe 21. A three-dimensional arc-shaped protrusion is uniformly fixedly connected to the upper part of the adjustment base 26 at the position corresponding to the cylindrical shaft. The end of the cylindrical shaft near the arc-shaped protrusion is a smooth spherical shape. An outer bottom ring 27 is fixedly connected to the outer wall of the adjustment base 26. A steering cam 28 is fixedly connected to the outer wall of the outer bottom ring 27.

[0043] Please refer to Figure 1 as well as Figure 8 - Figure 9 As shown, when the bag pump housing 1 is in operation, the adjusting base 26 rotates so that the cylindrical shaft is located at the top of the arc-shaped protrusion and the flared nozzle 22 is higher than the bottom of the inner cavity bottom 24.

[0044] Specifically, the workflow of the bag pump housing 1 during operation is as follows: When the equipment enters the operating condition, the conveying auxiliary mechanism 2 must first be switched to the raised state, such as... Figure 4 and Figure 5 As shown, at this time, the operator rotates the steering cam 28 on the outer wall of the outer bottom ring 27, which drives the adjusting base 26, which is fixedly connected to the outer bottom ring 27, to rotate around the bottom outer wall of the assembly pipe 21.

[0045] Because a three-dimensional arc-shaped protrusion is fixed above the adjusting base 26 at the position corresponding to the cylindrical shaft at the end of the integrated fastener 25, and the end of the cylindrical shaft near the arc-shaped protrusion is a smooth spherical surface, as the adjusting base 26 rotates, as... Figure 9 As shown, the cylindrical shaft gradually moves upward along the arc surface of the arc protrusion until it finally corresponds to the top of the arc protrusion. During this process, the connecting frame 25, which is fixedly connected to the cylindrical shaft, moves upward synchronously with the cylindrical shaft, thereby driving the external cylindrical chamber 23, which is fixedly connected to the upper surface of the connecting frame 25, to move upward. The inner cavity bottom 24, which is slidably connected to the external cylindrical chamber 23, and the flared nozzle 22, which is connected to the external cylindrical chamber 23 through the diagonal support shaft 2301, also move upward synchronously, so that the flared nozzle 22 is higher than the bottom of the inner cavity bottom 24. At the same time, since the assembly pipe 21 is the fixed end of the telescopic structure and the input pipe 12 is the moving end, the input pipe 12 moves upward linearly along the axial direction of the assembly pipe 21 to adapt to the convex state of the conveying auxiliary mechanism 2 and complete the switching of the convex state.

[0046] During operation, the drive module 11 starts and provides power. The medium to be transported is mostly easily vaporized, contains a small amount of impurities, or is a high-pressure medium, such as liquefied gas or high-pressure process fluid. It enters the assembly pipe 21 through the input pipe 12. The spiral track 2101 on the inner wall of the assembly pipe 21 has a spiral direction consistent with the rotation trend of the medium, thereby guiding the medium to form an orderly rotational flow. At the same time, the turbulence protrusions 2102 evenly distributed on the inner wall can disturb the medium, avoid local dead zones in the medium flow, and enhance the stability of the medium flow. Subsequently, the medium enters the inner cavity bottom 24 of the assembly pipe 21 through the flared nozzle 22, which can expand the medium input range and make the medium enter the inner bag pump housing 1 more evenly. The sliding ribs 2401 that are evenly fixed radially inside the inner cavity bottom 24 can effectively destroy the eddies that may be formed during the medium flow, prevent the local low pressure at the center of the eddies from causing the medium to vaporize, ensure that the medium stably fills the inner bag pump housing 1, and finally discharges through the output pipe 13 on the side of the bag pump housing 1, completing the medium transport operation.

[0047] The flared nozzle 22 is higher than the bottom of the inner cavity bottom 24. On the one hand, it can prevent a small amount of impurities that may be deposited at the bottom of the inner cavity bottom 24 from being sucked into the medium conveying channel, reducing the wear of impurities on the internal components of the pump. On the other hand, it can allow the medium to enter the inner cavity bottom 24 at a more reasonable height and angle. Together with the sliding rib plate 2401, it can further improve the stability of the medium flow and reduce the risk of cavitation.

[0048] Please refer to Figure 1 as well as Figure 10 - Figure 11 As shown, when the bag pump housing 1 is in the cleaning process, the adjusting base 26 rotates in the opposite direction, so that the cylindrical shaft is located at the bottom of the arc-shaped protrusion, and the flared nozzle 22 is lower than the bottom of the inner cavity bottom 24.

[0049] Specifically, the workflow of the bag pump housing 1 during the cleaning process is as follows: When the equipment enters the cleaning state, the conveying auxiliary mechanism 2 needs to be switched to the recessed state. At this time, the operator rotates the steering cam 28 in the reverse direction, causing the adjusting base 26 to rotate in the reverse direction. The arc-shaped protrusion on the upper part of the adjusting base 26 rotates in the reverse direction as well. Figure 11 As shown, the cylindrical shaft gradually moves downward along the arc surface of the arc protrusion until it is located at the bottom of the arc protrusion.

[0050] During the above process, the integrated buckle frame 25 moves downward synchronously with the cylindrical shaft, driving the outer cylindrical chamber 23, the inner cavity bottom 24 and the flared nozzle 22 to move downward synchronously, so that the flared nozzle 22 is lower than the bottom of the inner cavity bottom 24. At the same time, the input pipe 12 moves downward in a straight line along the axial direction of the assembly pipe 21 to adapt to the concave state of the conveying auxiliary mechanism 2 and complete the switching of the concave state.

[0051] It should be noted that the inclination direction of the inner cavity bottom 24 and the flared nozzle 22 is consistent, and the two can form a relatively integrated inclined structure. This design is linked to the operating conditions: during the above-mentioned operation, since the flared nozzle 22 is higher than the bottom of the inner cavity bottom 24, the crystals or impurities generated during the transportation process are more likely to gather downward along the inclination of the inner cavity bottom 24 and accumulate on the outside of the flared nozzle 22. At this time, the high-positioned flared nozzle 22 can form an effective barrier to prevent crystallized impurities from entering the core flow channel of the pump with the medium.

[0052] During the cleaning process, the medium being transported is a cleaning medium, such as clean water or an inert solvent. The cleaning medium enters the assembly pipe 21 through the input pipe 12. The threaded track 2101 on the inner wall of the assembly pipe 21 guides the cleaning medium to rotate and flow. The turbulence protrusions 2102 also agitate the cleaning medium, enhancing its fluidity and scouring ability. Subsequently, the cleaning medium is sprayed into the bag pump housing 1 through the flared nozzle 22. Because the flared nozzle 22 is lower than the bottom of the inner cavity 24 and is an integrated structure inclined in the same direction as the inner cavity 24, the crystalline impurities accumulated outside the flared nozzle 22 during the above operation will... The cleaning medium slides naturally down the inclined wall of the inner cavity bottom 24 and the flared nozzle 22, directly contacting the cleaning medium. At the same time, the conical structure of the inner cavity bottom 24 guides the cleaning medium to flow along the conical wall, and the sliding rib 2401 breaks the eddy current of the cleaning medium, so that the cleaning medium evenly covers all areas inside the bag pump housing 1. The diagonal support shaft 2301 between the external circular chamber 23 and the flared nozzle 22 can enhance the structural stability of the flared nozzle 22, ensuring that the flared nozzle 22 maintains a stable spray angle during the cleaning process, improving the cleaning effect. The waste liquid after cleaning is discharged through the output pipe 13, completing the cleaning operation.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-casing magnetic bag pump, comprising a bag pump casing (1), characterized in that: A conveying auxiliary mechanism (2) is provided below the casing (1) of the tubular pump. The conveying auxiliary mechanism (2) includes a flared nozzle (22). When the tubular pump casing (1) is in operation, the conveying auxiliary mechanism (2) switches to a raised state, and the flared nozzle (22) conveys the medium above the bottom surface of the tubular pump casing (1). When the tubular pump casing (1) is in the cleaning process, the conveying auxiliary mechanism (2) switches to a recessed state, and the flared nozzle (22) conveys the medium below the bottom surface of the tubular pump casing (1). A flared nozzle (22) is installed above the assembly pipe (21). The flared nozzle (22) is generally funnel-shaped with a wider top and a narrower bottom. An external cylindrical chamber (23) is fixedly connected to the outer wall of the flared nozzle (22). Diagonal support shafts (2301) are evenly installed between the external cylindrical chamber (23) and the flared nozzle (22). The apex of the diagonal support shaft (2301) is fixedly connected to the flared nozzle (22), and the two side support points of the diagonal support shaft (2301) are fixedly connected to the external cylindrical chamber (23). The lower surface of the external cylindrical chamber (23) is fixedly connected to a connecting frame (25). A cylindrical shaft is uniformly fixedly connected to one end of the connecting frame (25) away from the external cylindrical chamber (23). An adjusting base (26) is installed below the connecting frame (25). The adjusting base (26) is rotatably connected to the bottom outer wall of the assembly pipe (21). When the casing (1) of the tubular pump is in operation, the adjusting base (26) rotates so that the cylindrical shaft is located at the top of the arc-shaped protrusion and the flared nozzle (22) is higher than the bottom of the inner cavity bottom (24). When the casing (1) of the bag pump is in the cleaning process, the adjusting base (26) rotates in the opposite direction, so that the cylindrical shaft is located at the bottom of the arc-shaped protrusion, and the flared nozzle (22) is lower than the bottom of the inner cavity bottom (24).

2. The double-casing magnetic bag pump according to claim 1, characterized in that: The top of the bag pump housing (1) is equipped with a drive module (11) for providing operating power. The bottom of the bag pump housing (1) is equipped with an input pipe (12) for conveying medium into the bag pump housing (1). The side of the bag pump housing (1) is equipped with an output pipe (13) for discharging medium to the outside of the bag pump housing (1). The assembly pipe (21) is located between the bottom of the bag pump housing (1) and the input pipe (12), forming a medium flow connection structure between the bag pump housing (1) and the input pipe (12).

3. The double-casing magnetic bag pump according to claim 1, characterized in that: The assembly pipe (21) and the input pipe (12) form a telescopic structure that can be telescopically coordinated. The telescopic structure is used to adjust the position of the assembly pipe (21) and the input pipe (12) along the axial direction. The assembly pipe (21) is the fixed end of the telescopic structure, and its position remains fixed during the operation and cleaning of the bag pump housing (1). The input pipe (12) is the moving end of the telescopic structure, and it can move linearly along the axial direction of the assembly pipe (21) to adapt to the position requirements of the conveying auxiliary mechanism (2) in the convex and concave states.

4. A double-casing magnetic bag pump according to claim 1, characterized in that: The inner wall of the assembly pipe (21) is fixedly connected with a threaded track (2101), the spiral direction of the threaded track (2101) is consistent with the rotation trend of the medium, and the inner wall of the assembly pipe (21) is uniformly fixedly connected with turbulence protrusions (2102), the turbulence protrusions (2102) are located between the inclined gaps of the assembly pipe (21).

5. A double-casing magnetic bag pump according to claim 1, characterized in that: The inner cavity bottom (24) with the cone top facing upward and the cone bottom slidingly connected to the outer circular chamber (23) is installed below the casing (1) of the bag pump. The inner cavity bottom (24) is uniformly fixedly connected to the radial side of the interior of the inner cavity bottom (24). The height of the sliding rib (2401) is lower than the normal liquid level inside the casing (1) of the bag pump, and it smoothly transitions with the conical wall of the inner cavity bottom (24).

6. A double-casing magnetic bag pump according to claim 1, characterized in that: The upper part of the adjusting base (26) is uniformly fixedly connected with a three-dimensional arc-shaped protrusion at the position corresponding to the cylindrical shaft, and the end of the cylindrical shaft near the arc-shaped protrusion is a smooth spherical shape. The outer wall of the adjusting base (26) is fixedly connected with an outer bottom ring (27), and the outer wall of the outer bottom ring (27) is fixedly connected with a steering cam (28).

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