A flow-regulating reciprocating plunger pump

Abstract

The present invention relates to the technical field of reciprocating pumps, and discloses a flow-regulating plunger reciprocating pump, comprising: a fixed pump body, a stroke chamber at one end of which is provided with a transfer chamber at one end of the stroke chamber, a group of transmission holes respectively inserted with a discharge pipe and a liquid inlet pipe, a one-way transmission valve is provided inside the discharge pipe, a filtering mechanism and a sealing transmission component are provided inside the liquid inlet pipe, the filtering mechanism consists of a diverter pipe, a sealing pipe and a clamping ring, an annular filter chamber is formed between the diverter pipe and the sealing pipe, a plurality of transmission sieve plates are provided on the inner wall of the diverter pipe, and the clamping ring is clamped on the top of the annular filter chamber; compared with the prior art, the present invention realizes multi-path diversion and filtration of liquid through the combined structure of the annular filter chamber and the L-shaped multi-component flow channel, increases the effective filtration area, and compared with the traditional multi-layer filter screen structure, the design reduces the pressure loss of the system and can reduce the pump body load at the same flow rate, and the transmission sieve plate cooperates with the annular cavity to ensure filtration accuracy and avoid easy clogging of the filter layer.

Description

Technical Field

[0001] The present invention relates to the technical field of reciprocating pumps, in particular to a flow regulating plunger reciprocating pump. Background Art

[0002] Reciprocating pumps, a core device that transports fluids through the cyclical motion of a piston or plunger, are widely used in sewage treatment, petrochemicals, mine drainage, and other fields. Their operating principle relies on the pressure differential generated by volume changes, offering advantages such as high head and strong adaptability to high-viscosity media.

[0003] In existing technologies, in scenarios involving the transportation of sewage containing impurities, the mixing of foreign matter such as solid particles and fibers can easily cause problems such as pump blockage, valve group sticking, and seal failure. In severe cases, it can even cause wear or damage to key components (such as pistons and cylinders), significantly reducing the service life and operating efficiency of the equipment.

[0004] Single-stage filtration structures (such as a single filter screen or filter cartridge) are difficult to balance the requirements of large particle interception and fine impurity isolation. Although multi-stage filtration solutions can improve filtration accuracy, the series design of multi-layer filtration increases water flow resistance. Chinese patent CN218076705U mentions a reciprocating pump filtration device, in which first and second filter boxes and filter plates are provided for foreign matter filtration. However, in actual use, the filter components need to be cleaned separately, which is cumbersome and time-consuming. In addition, due to the provision of multiple filter components, inconsistent cleaning cycles may cause overload failure of a certain level. For this reason, we propose a flow-regulating plunger reciprocating pump to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a flow-regulating plunger reciprocating pump to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a flow regulating plunger reciprocating pump, comprising:

[0007] A fixed pump body, one end of which is provided with a stroke chamber, one end of which is provided with a transfer chamber, a group of transfer holes are opened on the transfer chamber, and a discharge pipe and a liquid inlet pipe are respectively inserted therein, and a one-way transfer valve is provided inside the discharge pipe;

[0008] Among them, a filtering mechanism and a sealing transmission component are arranged inside the liquid inlet pipe, the filtering mechanism consists of a shunt pipe, a sealing pipe and a clamping ring, an annular filter chamber is formed between the shunt pipe and the sealing pipe, the inner wall of the shunt pipe is provided with multiple groups of transmission sieve plates, the clamping ring is clamped on the top of the annular filter chamber, the liquid entering the shunt pipe can pass through the annular filter chamber and be transported to the bottom of the filtering mechanism along the transmission sieve plate, the sealing transmission component is composed of a pair of piston shafts, a pair of the piston shafts are inserted with a negative pressure driven transmission pipe, the transmission pipe is used to transport the liquid to the inside of the transfer chamber, and during the operation of the reciprocating pump, the piston rod can be moved in the stroke chamber. The operation of the whole part can allow the transmitted liquid to enter the transfer chamber along the liquid inlet pipe and be discharged along the liquid discharge pipe. When entering the liquid inlet pipe, as the piston rod reciprocates and controls the change of the air pressure inside the transfer chamber, it can cooperate with the sealing transmission component to transmit the liquid, and the filtering mechanism can discharge the excess impurities in the liquid to reduce the barrier to the impurities absorbed in the sewage after it enters the transfer chamber. The sewage can be diverted and transmitted with the help of the diversion pipe, and the sewage can be filtered in cooperation with the annular filter chamber. The filtration effect is enhanced by increasing the filtration area. Compared with setting multiple layers of fine filtration layers, the load on the operation of the reciprocating pump can be reduced.

[0009] Preferably, a plurality of diversion channels are provided inside the diversion pipe, and the diversion channels are in an L-shape and are evenly arranged in an array inside the diversion pipe. The diversion channels are connected to the annular filter chamber and are used to divert the incoming liquid and transmit it to the inside of the annular filter chamber. Due to the provision of the plurality of diversion channels, even if a blockage occurs on one side, the load of the equipment will not be doubled, and the sewage can be continuously transported and separated. Compared with the provision of a multi-layer filtering mechanism, once a single layer of accumulation and blockage occurs, the operating load of the equipment will be sharply increased, which may easily cause damage to the equipment during operation.

[0010] A docking ring is installed at the bottom of the diversion pipe, and the bottom of the inner wall of the liquid inlet pipe is tapered. The docking ring is used to be clamped at the bottom of the inner wall of the liquid inlet pipe.

[0011] Preferably, a plurality of adsorption shafts are provided between the diversion tube and the sealing tube, and the plurality of adsorption shafts have elastic bottoms clamped with fixing rings, and the fixing rings are provided at the bottom of the annular filter chamber;

[0012] A transmission assembly is installed on the clamping ring, and the transmission assembly consists of a pneumatic ball and a toggle shaft. The adsorption shaft is connected to the bottom of the pneumatic ball, and the toggle shaft can drive the pneumatic ball to deform under the action of external force, so that the adsorption shaft can move inside the annular filter chamber, which can effectively improve the efficiency of capturing fine suspended matter.

[0013] Preferably, a plurality of bent extrusion plates are installed on the adsorption shaft, and a recovery ring is sleeved on the adsorption shaft and staggered with the extrusion plates, and the recovery ring is a water purification filter material. Through the swing mechanism of the elastic adsorption shaft and the transmission component, fixed frequency vibration adsorption can be achieved during normal operation, which can improve the efficiency of capturing fine suspended matter. Combined with the mechanical self-cleaning design of the extrusion plate and the recovery ring, the dirt residue on the surface of the transmission screen plate is reduced, and the cleaning cycle is extended compared with the traditional fixed filter.

[0014] Preferably, a limiting ring is provided on the top of the sealing transmission component, the limiting ring is clamped on the top of the liquid inlet pipe, and the bottom of the sealing transmission component is against the top of the filter mechanism;

[0015] A reset frame is provided at the bottom of the sealing transmission assembly, and the reset frame is rotatably set at the bottom of the bottom piston shaft. The reset frame consists of a group of positioning rings and multiple reset pressure plates. A retaining ring is provided at the bottom of the transmission tube, and the retaining ring is against the bottom of the reset frame to control the position of the transmission tube. The movable position of the reset frame corresponds to the retaining ring.

[0016] Preferably, a blocking plate is installed on the top of the transmission pipe, a filter plate is installed on the bottom of the transmission pipe, the bottom of the transmission pipe is movably arranged inside the diversion pipe, and a plurality of drainage holes are opened on the side wall of the transmission pipe to transmit sewage.

[0017] Preferably, a plurality of transmission shafts are connected to the side wall of the transmission tube, a return pipe is clamped inside the transmission shaft, the return pipe is elastic and a sealing rod is provided on the top perpendicular to the return pipe, a plurality of transmission cavities are opened inside the piston shaft at the top, and the sealing rod is movably provided inside the transmission cavity;

[0018] An arc-shaped mesh cover is provided on the top of the reflux pipe, a hollow hinged ball is provided at the bottom of the reflux pipe, and a plurality of hinged grooves and a conveying channel connected thereto are provided on the piston shaft at the bottom. The reflux pipe can discharge the accumulated liquid in the transfer chamber along the conveying channel after the reciprocating pump stops running, thereby reducing the corrosion rate and extending the service life of the equipment under intermittent operation conditions.

[0019] Preferably, a piston rod with adjustable stroke is provided inside the stroke chamber, which can be suitable for industrial scenarios requiring precise flow control.

[0020] Preferably, a sponge sandwich filter plate is provided at the bottom of the liquid inlet pipe for coarse screening of the liquid to improve the interception rate of large particles.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention realizes multi-path diversion and filtration of liquid through the combined structure of an annular filter cavity and an L-shaped multi-component flow channel, thereby increasing the effective filtration area. Compared with the traditional multi-layer filter structure, this design reduces the system pressure loss and reduces the pump load at the same flow rate. The transmission screen plate cooperates with the annular cavity to ensure the filtration accuracy while avoiding the problem of easy clogging of the traditional fine filter layer.

[0023] 2. The present invention uses a swing mechanism that links the elastic adsorption shaft with the transmission assembly to achieve fixed-frequency vibration adsorption during normal operation, which can improve the capture efficiency of fine suspended matter. Combined with the mechanical self-cleaning design of the extrusion plate and the recovery ring, it reduces the amount of dirt remaining on the surface of the transmission screen plate and extends the cleaning cycle compared to traditional fixed filters.

[0024] 3. The present invention uses the synergistic effect of the elastic sealing rod and the conveying channel of the return pipe system to automatically discharge the residual liquid in the transfer chamber within seconds after shutdown, which can reduce the corrosion rate and extend the service life of the equipment under intermittent operation conditions;

[0025] 4. The present invention adopts a multi-channel parallel diversion design. When a single channel is blocked, the system can still maintain sufficient rated flow, reducing the impact of blockage on the equipment and improving the large particle interception rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the disassembled structure of the pump body of the present invention;

[0028] Figure 3 This is a schematic diagram of the explosive disassembly of the transfer chamber structure of the present invention;

[0029] Figure 4 This is a schematic diagram of the explosion and disassembly of the liquid inlet pipe structure of the present invention;

[0030] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram in the middle;

[0031] Figure 6 This is a schematic structural diagram of the sealing transmission component of the present invention;

[0032] Figure 7 Schematic diagram of the internal structure of the filtering mechanism of the present invention;

[0033] Figure 8 It is a schematic cross-sectional view of the filtering mechanism and the sealing transmission assembly of the present invention;

[0034] Figure 9 For the present invention Figure 8 A partial enlarged schematic diagram of point B in the middle;

[0035] In the figure: 1. Fixed pump body; 2. Transfer chamber; 3. Filter mechanism; 4. Sealed transmission assembly; 11. Stroke chamber; 21. Discharge pipe; 22. Inlet pipe; 23. Limiting ring; 31. Diverter pipe; 311. Sealing pipe; 32. Snap ring; 321. Transmission assembly; 33. Diverter channel; 34. Fixed ring; 35. Adsorption shaft; 36. Transmission sieve plate; 37. Docking ring; 41. Transmission pipe; 411. Piston shaft; 42. Return pipe; 421. Transmission shaft; 43. Sealing rod; 44. Reset frame; 45. Filter plate; 46. Delivery channel. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1-9 The present invention provides a technical solution: a flow regulating plunger reciprocating pump, comprising:

[0038] The pump body 1 is fixed, and a stroke chamber 11 is provided at one end thereof. A transfer chamber 2 is installed at one end of the stroke chamber 11. The transfer chamber 2 is provided with a group of transfer holes into which a discharge pipe 21 and a liquid inlet pipe 22 are inserted respectively. A one-way transfer valve is provided inside the discharge pipe 21.

[0039] Among them, a filtering mechanism 3 and a sealing transmission component 4 are arranged inside the liquid inlet pipe 22. The filtering mechanism 3 consists of a shunt pipe 31, a sealing pipe 311 and a clamping ring 32. An annular filter chamber is formed between the shunt pipe 31 and the sealing pipe 311. A plurality of transmission sieve plates 36 are provided on the inner wall of the shunt pipe 31. The clamping ring 32 is clamped on the top of the annular filter chamber. The liquid enters the shunt pipe 31 and can pass through the annular filter chamber and be transported to the bottom of the filtering mechanism 3 along the transmission sieve plate 36. The sealing transmission component 4 consists of a pair of piston shafts 411. A negative pressure-driven transmission pipe 41 is inserted into the pair of piston shafts 411. The transmission pipe 41 is used to transport the liquid to the inside of the transfer chamber 2. During the operation of the reciprocating pump, the piston rod can be moved in a certain direction. The stroke chamber 11 operates internally, and can transmit the transmitted liquid into the transfer chamber 2 along the liquid inlet pipe 22, and can be discharged along the liquid discharge pipe 21. When entering the liquid inlet pipe 22, as the piston rod reciprocates and controls the change of the air pressure inside the transfer chamber 2, it can cooperate with the sealing transmission component 4 to transmit the liquid, and the filtering mechanism 3 can discharge the excess impurities in the liquid, reduce the barrier to the impurities in the sewage after entering the transfer chamber 2, and with the help of the diversion pipe 31, the sewage can be diverted and transmitted, and cooperate with the annular filter chamber to filter the sewage, and enhance the filtering effect by increasing the filtering area. Compared with setting multiple layers of fine filter layers, it can reduce the load brought by the operation of the reciprocating pump.

[0040] like Figure 8 As shown, in order to ensure the filtration efficiency of the equipment, a plurality of diversion channels 33 are provided inside the diversion pipe 31. The diversion channels 33 are "L"-shaped and are evenly arranged in an array inside the diversion pipe 31. The diversion channels 33 are connected to the annular filter cavity and are used to divert the incoming liquid to the inside of the annular filter cavity. Due to the provision of the plurality of diversion channels 33, even if a blockage occurs on one side, the load of the equipment will not be doubled, and the sewage can be continuously transported and separated. Compared with the provision of a multi-layer filtration mechanism, once a single layer of accumulation and blockage occurs, the operating load of the equipment will be sharply increased, which can easily cause damage to the equipment during operation.

[0041] A docking ring 37 is installed at the bottom of the diversion pipe 31. The bottom of the inner wall of the liquid inlet pipe 22 is tapered. The docking ring 37 is used to be clamped at the bottom of the inner wall of the liquid inlet pipe 22. The filtering mechanism 3 is clamped at the bottom of the liquid inlet pipe 22 and can filter the sewage.

[0042] like Figure 9 As shown, in order to reduce the residual fine impurities in the sewage, multiple groups of adsorption shafts 35 are provided between the diversion pipe 31 and the sealing pipe 311. The multiple groups of adsorption shafts 35 have elastic bottoms with fixed rings 34, which are provided at the bottom of the annular filter chamber.

[0043] A transmission assembly 321 is installed on the clamping ring 32. The transmission assembly 321 consists of a pneumatic ball and a toggle shaft. The adsorption shaft 35 is connected to the bottom of the pneumatic ball, and the toggle shaft can drive the pneumatic ball to deform under the action of external force, so as to be used for the adsorption shaft 35 to move inside the annular filter chamber. As the transmission assembly 321 and the reset frame 44 during the transmission process act, the toggle shaft and the pneumatic ball can drive the adsorption shaft 35 to move under the action of external force, so that it can swing in the sewage and further adsorb the fine impurities suspended in the sewage.

[0044] like Figure 9 As shown, in order to reduce the possibility of blockage inside the equipment during long-term operation, a plurality of bent extrusion plates are installed on the adsorption shaft 35, and a recovery ring is sleeved on the adsorption shaft 35 and staggered with the extrusion plates, and the recovery ring is a water purification filter material. As the adsorption shaft 35 swings, the extrusion plates and the transmission sieve plate 36 can be squeezed to assist in cleaning the surface thereof, thereby reducing the possibility of blockage of the transmission sieve plate 36 caused by long-term operation and enabling the equipment to operate continuously.

[0045] like Figure 6 As shown, in order to ensure the stability of the equipment operation, a limiting ring 23 is provided on the top of the sealing transmission component 4. The limiting ring 23 is clamped on the top of the liquid inlet pipe 22, and the bottom of the sealing transmission component 4 is against the top of the filter mechanism 3;

[0046] A reset frame 44 is provided at the bottom of the sealing transmission component 4, and the reset frame 44 is rotatably set at the bottom of the bottom piston shaft 411. The reset frame 44 is composed of a group of positioning rings and multiple reset pressure plates. A clamping ring is provided at the bottom of the transmission tube 41, and the clamping ring is against the bottom of the reset frame 44 to control the position of the transmission tube 41. The movable position of the reset frame 44 corresponds to the clamping ring 32. Under the action of negative pressure, the transmission tube 41 can be moved, and the transmission tube 41 can be moved upward to transmit the drainage hole to the inside of the transfer chamber 2. Under the action of boost, the transmission tube 41 can move downward, and the sewage inside the transfer chamber 2 can be transmitted along the one-way valve, so that the sewage is discharged along the drainage pipe 21.

[0047] like Figure 5 As shown, a blocking plate is installed on the top of the transmission pipe 41, and a filter plate 45 is installed at the bottom of the transmission pipe 41. The bottom of the transmission pipe 41 is movably arranged inside the diversion pipe 31. A plurality of drainage holes are opened on the side wall of the transmission pipe 41. With the help of the filter plate 45, sewage can be filtered and treated to reduce the accumulation of dirt and blockage inside the transmission pipe 41.

[0048] like Figure 5 and Figure 6As shown, in order to reduce the corrosion caused by the accumulation of fluid inside the device, multiple transmission shafts 421 are connected to the side wall of the transmission tube 41. A return pipe 42 is fixed inside the transmission shaft 421. The return pipe 42 is elastic and has a sealing rod 43 arranged perpendicular to the return pipe 42. Multiple transmission chambers are opened inside the top piston shaft 411, and the sealing rod 43 is movably arranged inside the transmission chamber.

[0049] An arc-shaped mesh cover is provided on the top of the return pipe 42, a hollow hinged ball is provided at the bottom of the return pipe 42, and a plurality of hinged grooves and a delivery channel 46 connected thereto are provided on the bottom piston shaft 411. The return pipe 42 can discharge the accumulated liquid inside the transfer chamber 2 along the delivery channel 46 after the reciprocating pump stops running. When the transmission pipe 41 returns to its original position, the excess liquid inside the transfer chamber 2 will be introduced along the return pipe 42 after the pressurization or negative pressure disappears. At this time, the return pipe 42 can be calibrated with the delivery channel 46, so that the excess liquid can flow back. Compared with the traditional one-way valve setting, it can play the role of draining liquid and reduce the corrosion of internal parts caused by sewage.

[0050] like Figure 2 As shown, a piston rod with adjustable stroke is provided inside the stroke chamber 11, which can adjust the transmission amount of the liquid.

[0051] like Figure 4 As shown, a sponge sandwich filter plate is provided at the bottom of the liquid inlet pipe 22 for coarse screening of the liquid to reduce the large particles of impurities remaining in the sewage.

[0052] Working principle: First, during the operation of the reciprocating pump, the piston rod can be operated inside the stroke chamber 11, and the transmitted liquid can enter the transfer chamber 2 along the liquid inlet pipe 22, and can be discharged along the liquid discharge pipe 21. When entering the liquid inlet pipe 22, as the piston rod reciprocates, the air pressure change inside the transfer chamber 2 is controlled, and the sealing transmission component 4 can be used to transmit the liquid, and the filtering mechanism 3 can be used to discharge the excess impurities in the liquid, reduce the impurities in the sewage after entering the transfer chamber 2, and can be used to divert and transmit the sewage with the help of the diversion pipe 31, and filter the sewage with the help of the annular filter chamber. The large filtration area enhances the filtration effect. Compared with setting multiple layers of fine filtration layers, it can reduce the load on the operation of the reciprocating pump. When the sewage is introduced along the liquid inlet pipe 22, it can absorb and block large particles of dirt and the like under the action of the sponge interlayer, playing the role of a coarse screen. After the water flows along the diversion channel 33 into the annular filter chamber, it can absorb and process fine impurities suspended in the sewage under the action of the recovery ring on the surface of the adsorption shaft 35. The sewage can also be further filtered on the transmission sieve plate 36. When the sewage is transmitted along the transmission pipe 41 under the action of negative pressure, it can effectively reduce the impurities remaining in the liquid.

[0053] Then, under the action of negative pressure, the transmission pipe 41 can be driven to move upward, so that the sewage can enter the transfer chamber 2 along the drainage hole. The upward movement of the transmission pipe 41 can cause the reset frame 44 to be rotated and compressed. The reset frame 44 can move the transmission component 321 during the transmission process. Under the action of the air pressure ball, the adsorption shaft 35 at the bottom is pulled to move, so that the adsorption shaft 35 can move inside the annular filter chamber. The extrusion plate provided on the surface of the extrusion plate can squeeze the transmission sieve plate 36, which can reduce the accumulation of fine impurities on the transmission sieve plate 36 when the equipment is in continuous operation, and can make it move in the water flow and be adsorbed on the recovery ring.

[0054] Finally, after the equipment is shut down, the transmission tube 41 can return to its original position under the action of the reset frame 44, instead of being offset upward or downward under the action of negative pressure or boost. When the transmission tube 41 returns to its original position, the excess liquid inside the transfer chamber 2 will be introduced along the reflux pipe 42 after the boost or negative pressure disappears. At this time, the reflux pipe 42 can be calibrated with the delivery channel 46, so that the excess liquid can flow back. Compared with the traditional one-way valve setting, it can play the role of drainage and reduce the corrosion of internal parts caused by sewage.

[0055] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A flow-regulating reciprocating piston pump, characterized in that: include, A fixed pump body (1) is provided with a stroke chamber (11) at one end thereof, a transfer chamber (2) is installed at one end of the stroke chamber (11), a group of transfer holes are opened on the transfer chamber (2) and a liquid discharge pipe (21) and a liquid inlet pipe (22) are respectively inserted therein, and a one-way transfer valve is provided inside the liquid discharge pipe (21); The liquid inlet pipe (22) is provided with a filter mechanism (3) and a sealing transmission assembly (4), the filter mechanism (3) is composed of a diverter pipe (31), a sealing pipe (311) and a clamping ring (32), an annular filter chamber is formed between the diverter pipe (31) and the sealing pipe (311), the inner wall of the diverter pipe (31) is provided with a plurality of transmission screen plates (36), the clamping ring (32) is clamped at the top of the annular filter chamber, and the liquid entering the diverter pipe (31) can pass through the annular filter chamber and be transported to the bottom of the filter mechanism (3) along the transmission screen plates (36), the sealing transmission assembly (4) is composed of a pair of piston shafts (411), a negative pressure driven transmission pipe (41) is inserted into the pair of piston shafts (411), and the transmission pipe (41) is used to transport the liquid to the inside of the transfer chamber (2); A plurality of adsorption shafts (35) are provided between the diversion pipe (31) and the sealing pipe (311), and the plurality of adsorption shafts (35) have elastic bottoms with fixed rings (34) provided thereon, and the fixed rings (34) are provided at the bottom of the annular filter chamber; A transmission assembly (321) is mounted on the clamping ring (32), and the transmission assembly (321) is composed of a pneumatic ball and a toggle shaft. The adsorption shaft (35) is connected to the bottom of the pneumatic ball, and the toggle shaft can drive the pneumatic ball to deform under the action of an external force, so as to enable the adsorption shaft (35) to move inside the annular filter chamber. The side wall of the transmission tube (41) is connected to a plurality of transmission shafts (421), a return pipe (42) is provided inside the transmission shaft (421), the return pipe (42) is elastic and has a sealing plug (43) provided on the top perpendicular to the return pipe (42), a plurality of transmission cavities are provided inside the piston shaft (411) at the top, and the sealing plug (43) is movably provided inside the transmission cavity; The top of the return pipe (42) is provided with an arc-shaped mesh cover, the bottom of the return pipe (42) is provided with a hollow hinge ball, and the piston shaft (411) at the bottom is provided with a plurality of hinge grooves and a conveying channel (46) connected thereto. The return pipe (42) can discharge the accumulated liquid in the transfer chamber (2) along the conveying channel (46) after the reciprocating pump stops operating.

2. The flow-regulating reciprocating piston pump according to claim 1, characterized in that: A plurality of diversion channels (33) are provided inside the diversion tube (31). The diversion channels (33) are in an "L" shape and are evenly arranged in an array inside the diversion tube (31). The diversion channels (33) are connected to the annular filter chamber and are used to divert the incoming liquid to the inside of the annular filter chamber. A docking ring (37) is installed at the bottom of the diversion pipe (31), and the bottom of the inner wall of the liquid inlet pipe (22) is tapered, and the docking ring (37) is used to be clamped on the bottom of the inner wall of the liquid inlet pipe (22).

3. The flow-regulating reciprocating piston pump according to claim 1, characterized in that: A plurality of bent extrusion plates are mounted on the adsorption shaft (35), and a recovery ring staggered with the extrusion plates is sleeved on the adsorption shaft (35), wherein the recovery ring is a water purification filter material.

4. The flow-regulating reciprocating piston pump according to claim 1, characterized in that: A limiting ring (23) is provided on the top of the sealing transmission component (4), and the limiting ring (23) is clamped on the top of the liquid inlet pipe (22), and the bottom of the sealing transmission component (4) is abutted against the top of the filter mechanism (3); A reset frame (44) is provided at the bottom of the sealing transmission component (4), and the reset frame (44) is rotatably arranged at the bottom of the bottom piston shaft (411). The reset frame (44) is composed of a group of positioning rings and a plurality of reset pressure plates. A retaining ring is provided at the bottom of the transmission tube (41), and the retaining ring abuts against the bottom of the reset frame (44) to control the position of the transmission tube (41). The movable position of the reset frame (44) corresponds to the snap ring (32).

5. The flow-regulating reciprocating piston pump according to claim 1, characterized in that: A blocking plate is installed on the top of the transmission tube (41), a filter plate (45) is installed on the bottom of the transmission tube (41), the bottom of the transmission tube (41) is movably arranged inside the diversion tube (31), and a plurality of drainage holes are opened on the side wall of the transmission tube (41).

6. The flow-regulating reciprocating piston pump according to claim 1, characterized in that: A piston rod with adjustable stroke is provided inside the stroke chamber (11).

7. The flow-regulating reciprocating piston pump according to claim 1, characterized in that: A sponge sandwich filter plate is provided at the bottom of the liquid inlet pipe (22) for coarse screening of the liquid.

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