A material extraction pump

Abstract

The present invention relates to a material pumping pump, which includes a discharge seat, a discharge cylinder, a connecting sleeve, a feed cylinder, a discharge sealing device, a discharge shaft, a discharge check valve, a sliding check valve, a feed shaft and a feeder. The discharge seat is cylindrical. The discharge seat, the discharge cylinder, the connecting sleeve and the feed cylinder are sequentially connected end to end to form an infusion cavity. The discharge shaft is arranged in the discharge seat. The discharge check valve is arranged in the discharge cylinder, with one end coaxially connected to the discharge shaft and the other end coaxially connected to the feed shaft. The other end of the feed shaft passes through the sliding check valve arranged in the connecting sleeve and extends into the feed cylinder, and is connected to the feeder arranged in the feed cylinder. This material pumping pump is provided with a discharge check valve and a sliding check valve. When the pressure at the discharge port is greater than the first threshold, the discharge check valve closes; when the pressure at the feed port is greater than the second threshold, the sliding check valve closes; thus effectively solving the adverse effects caused by the abnormal increase in pressure in the raw material storage equipment or production equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, and particularly to a charging pump. Background Art

[0002] A pump is a machine that transports fluids or increases the pressure of fluids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the energy of the liquid. Pumps are mainly used to transport liquids such as water, oil, acid-base solutions, emulsions, suspension liquids, and liquid metals, and can also transport liquid-gas mixtures and liquids containing suspended solids, and are widely used in production and life.

[0003] In factory production, charging pumps are widely used to pump raw materials in raw material storage equipment into production equipment. During the production process, the pressures in the raw material storage equipment and the production equipment may fluctuate. When the pressure in the raw material storage equipment rises abnormally, it may cause the feeding volume to increase rapidly, which has an adverse impact on production; while when the pressure in the production equipment rises abnormally, it may flow back into the raw material storage equipment, polluting the raw materials stored in the raw material storage equipment. Summary of the Invention

[0004] In view of this, it is necessary to provide a charging pump to solve the technical problem that the abnormal increase in pressure in the raw material storage equipment or the production equipment in the prior art affects production.

[0005] The present invention provides a charging pump, which includes: a discharge seat, a discharge cylinder, a connecting sleeve, a feeding cylinder, a discharge sealing device, a discharge shaft, a discharge check valve, a sliding check valve, a feeding shaft, and a feeder. The discharge seat is cylindrical. The discharge seat, the discharge cylinder, the connecting sleeve, and the feeding cylinder are sequentially connected end to end to form a liquid delivery cavity. The port at one end of the feeding cylinder away from the discharge seat is the feeding port. The discharge shaft is arranged in the discharge seat, with one end extending outside the discharge seat and the other end extending into the discharge cylinder. The discharge shaft is hermetically connected to the inner wall of the discharge seat through the discharge sealing device. The discharge check valve is arranged in the discharge cylinder, with one end coaxially connected to the discharge shaft and the other end coaxially connected to the feeding shaft. The other end of the feeding shaft passes through the sliding check valve arranged in the connecting sleeve and extends into the feeding cylinder, and is connected to the feeder arranged in the feeding cylinder. A discharge port is opened on the side wall of the discharge seat to communicate with the liquid delivery cavity; when the pressure at the discharge port is greater than the first threshold, the discharge check valve closes, and when the pressure at the feeding port is greater than the second threshold, the sliding check valve closes.

[0006] Further, the discharge check valve includes a discharge check valve stem, a front part of the discharge check valve, and a rear part of the discharge check valve. The discharge check valve stem includes a stem portion and a head. One end of the stem portion is coaxially and fixedly connected to the head, and the other end of the stem portion is coaxially connected to the discharge shaft. A first slope surface is formed on one side of the head facing the stem portion. A diversion groove is formed on the side wall of the stem portion and communicates with the first slope surface. The front part and the rear part of the discharge check valve are jointly sleeved on the stem portion and can slide along the stem portion. A second slope surface corresponding to the first slope surface is formed on one side of the front part of the discharge check valve facing the head. The first slope surface and the second slope surface can be completely attached. A diversion hole communicating with the diversion groove is formed in the rear part of the discharge check valve.

[0007] Further, one end of the discharge shaft close to the discharge check valve forms a first installation socket. The end of the stem portion away from the head is inserted into the first installation socket, and the stem portion is also connected with the inner wall of the first installation socket in an interference fit manner.

[0008] Further, one end of the head away from the stem portion forms a second installation socket. The end of the feed shaft away from the feeder is inserted into the second installation socket, and the feed shaft is also connected with the inner wall of the second installation socket in an interference fit manner.

[0009] Further, the connecting sleeve includes a connecting sleeve body and a connecting sleeve abutting portion. The outer wall of the connecting sleeve abutting portion is fixedly connected to the inner wall of the connecting sleeve body. Both side surfaces of the connecting sleeve abutting portion are flat, and a communication hole is formed in the middle. The head is inserted into the communication hole, and the end of the head away from the stem portion is flush with the end of the connecting sleeve abutting portion away from the stem portion.

[0010] Further, the sliding check valve includes a sliding check valve seat, a front part of the sliding check valve, and a rear part of the sliding check valve. The outer side wall of the sliding check valve seat is slidably and sealingly connected to the inner wall of the connecting sleeve. A first liquid delivery hole is formed in the middle of the sliding check valve seat. The feed shaft passes through the first liquid delivery hole and forms a gap for liquid passage with the inner wall of the first liquid delivery hole. The rear part of the sliding check valve is sleeved on the feed shaft and its outer wall abuts against the inner wall of the connecting sleeve body. A second liquid delivery hole is formed in the rear part of the sliding check valve, and the second liquid delivery hole communicates the first liquid delivery hole with the communication hole. The front part of the sliding check valve is connected to the rear part of the sliding check valve and sleeved on the feed shaft. A third slope surface is formed on one side of the front part of the sliding check valve facing the sliding check valve seat. A fourth slope surface corresponding to the third slope surface is formed on one side of the sliding check valve seat facing the front part of the sliding check valve. The third slope surface and the fourth slope surface can be completely attached.

[0011] Further, the sliding check valve further includes a sliding check valve retaining ring sleeved on the feed shaft. One end of the sliding check valve retaining ring abuts against the connecting sleeve abutting portion, and the other end is connected to the end of the rear part of the sliding check valve away from the sliding check valve seat. A third liquid delivery hole is formed in the sliding check valve, and the third liquid delivery hole communicates the second liquid delivery hole with the communication hole.

[0012] Further, the feeder includes a scraper, and a plurality of scrapers are fixed to the feeding shaft. When the scrapers rotate with the feeding shaft, they can suck the fluid into the infusion cavity.

[0013] Further, the discharge seat includes a discharge seat tube body and a discharge seat abutting portion. The outer wall of the discharge seat abutting portion is fixedly connected to the inner wall of the discharge seat tube body. Both side surfaces of the discharge seat abutting portion are flat, and a discharge hole is formed in the middle. The discharge shaft passes through the discharge hole and forms a gap for the liquid to pass through with the inner wall of the discharge hole. The feed port passes through the discharge seat tube body and the discharge seat abutting portion.

[0014] Further, the discharge sealing device includes a discharge sealing ring baffle, a discharge sealing ring copper sleeve, a discharge shaft compression nut, a pre-discharge sealing ring, a post-discharge sealing ring, and an outer copper sleeve sealing ring. The discharge sealing ring baffle is sleeved on the discharge shaft and one end of it abuts against the discharge seat abutting portion. The discharge sealing ring copper sleeve is sleeved on the discharge shaft and one end of it abuts against the end of the discharge sealing ring baffle away from the discharge seat abutting portion. A pre-sealing ring groove is formed at one end of the discharge sealing ring copper sleeve close to the discharge sealing ring baffle, and a post-sealing ring groove is formed at the end of the discharge sealing ring copper sleeve away from the discharge sealing ring baffle. An outer sealing ring groove is formed on the outer side surface of the discharge sealing ring copper sleeve. The pre-discharge sealing ring is arranged in the pre-sealing ring groove, the post-discharge sealing ring is arranged in the post-sealing ring groove, and the outer copper sleeve sealing ring is arranged in the outer sealing ring groove. External threads are formed on the discharge shaft, and the discharge shaft compression nut is meshed with the external threads to compress the pre-discharge sealing ring between the discharge sealing ring baffle and the discharge sealing ring copper sleeve and the post-discharge sealing ring between the discharge sealing ring copper sleeve and the discharge shaft compression nut.

[0015] Compared with the prior art, the present pumping pump is provided with a discharge check valve and a sliding check valve. When the pressure at the discharge port is greater than the first threshold value, the discharge check valve closes, preventing the material in the production equipment from flowing back and contaminating the raw materials in the raw material storage equipment; when the pressure at the feed port is greater than the second threshold value, the sliding check valve closes, temporarily stopping the addition of raw materials to the production equipment to avoid over-addition of raw materials in the production equipment; thus effectively solving the adverse effects caused by the abnormal increase in pressure in the raw material storage equipment or the production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the first embodiment of the pumping pump provided by the present invention;

[0017] Figure 2 is Figure 1 an enlarged view of part A in

[0018] Figure 3 is Figure 1 an enlarged view of part B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings. The accompanying drawings form a part of this application and are used together with the embodiments of the present invention to explain the principles of the present invention, rather than to limit the scope of the present invention.

[0020] Please refer to Figure 1 , this pumping pump includes a discharge seat 1, a discharge cylinder 2, a connecting sleeve 3, a feed cylinder 4, a discharge sealing device 5, a discharge shaft 6, a discharge check valve 7, a sliding check valve 8, a feed shaft 9, and a feeder 10. This pumping pump is generally used to be placed in a raw material barrel when in use, and the liquid raw material in the raw material barrel is pumped out through this pumping pump.

[0021] The discharge seat 1 includes a discharge seat tube body 11 and a discharge seat abutting portion 12. The discharge seat tube body 11 is cylindrical, and the discharge seat abutting portion 12 is annular. The outer wall of the discharge seat abutting portion 12 is integrally formed and connected to the inner wall of the discharge seat tube body 11, and its inner wall forms a discharge hole for the raw material to flow. The upper and lower sides of the discharge seat abutting portion 12 are horizontal to facilitate abutting. A discharge port 13 is provided on the discharge seat 1, and the discharge port 13 penetrates through the discharge seat tube body 11 and the discharge seat abutting portion 12, communicating the inner wall of the discharge seat abutting portion 12 with the outer wall of the discharge seat tube body 11.

[0022] The upper end of the discharge cylinder 2 is inserted into the discharge seat tube body 11 and abuts against the lower surface of the discharge seat abutting portion 12. A sealing ring is sleeved on the upper end of the discharge cylinder 2 to seal the gap between the upper end of the discharge cylinder 2 and the inner wall of the discharge seat tube body 11.

[0023] The connecting sleeve 3 includes a connecting sleeve tube body 31 and a connecting sleeve abutting portion 32. The connecting sleeve abutting portion 32 is annular, and its outer side is integrally formed and fixedly connected to the inner wall of the connecting sleeve tube body 31. The upper and lower sides of the connecting sleeve abutting portion 32 are horizontal planes, and a communication hole is formed in the middle. The lower end of the discharge cylinder 2 is inserted into the connecting sleeve tube body 31 and abuts against the upper surface of the connecting sleeve abutting portion 32. A sealing ring is sleeved on the lower end of the discharge cylinder 2 to seal the gap between the discharge cylinder 2 and the inner wall of the connecting sleeve tube body 31.

[0024] The upper end of the feed cylinder 4 is hermetically connected to the lower end of the connecting sleeve 3. In this embodiment, a threaded engagement connection method is adopted, and the lower end of the feed cylinder 4 forms the feed port of this pumping pump.

[0025] A liquid infusion cavity is formed by sequentially connecting the discharge seat 1, the discharge cylinder 2, the connecting sleeve 3, and the feed cylinder 4 end to end. The liquid raw material enters from the lower feed port and exits from the discharge port on the discharge seat 1. The discharge shaft 6, the discharge check valve 7, the feed shaft 9, and the feeder 10 are connected end to end in sequence and are disposed inside the liquid infusion cavity.

[0026] The discharge shaft 6 is built into the discharge seat 1 and is hermetically connected to the discharge seat 1 through a discharge sealing device 5. The upper end of the discharge shaft 6 extends outside the upper end of the discharge seat 1 and is connected to an external power device such as a motor. The external power device can provide power to drive the discharge shaft 6 to rotate. The lower end of the discharge shaft 6 passes through the discharge hole in the middle of the discharge seat abutting portion 12 and extends into the discharge cylinder 2. A gap for liquid passage is formed between the discharge shaft 6 and the inner wall of the discharge hole, and the liquid raw material can enter the discharge port 13 through this gap.

[0027] The discharge sealing device 5 includes a discharge sealing ring baffle 51, a discharge sealing ring copper sleeve 52, a discharge shaft compression nut 53, a pre-discharge sealing ring 54, a post-discharge sealing ring 55, and an outer sealing ring 56 for the copper sleeve. The discharge sealing ring baffle 51 is sleeved on the discharge shaft 6 and its lower end abuts against the upper surface of the discharge seat abutting portion 12. The discharge sealing ring copper sleeve 52 is sleeved on the discharge shaft 6 and its lower end abuts against the upper surface of the discharge sealing ring baffle 51.

[0028] A pre-sealing ring groove is provided at one end of the discharge sealing ring copper sleeve 52 close to the discharge sealing ring baffle 51, a post-sealing ring groove is provided at the end of the discharge sealing ring copper sleeve 52 far from the discharge sealing ring baffle 51, and an outer sealing ring groove is provided on the outer side surface of the discharge sealing ring copper sleeve 52. The pre-discharge sealing ring 54 is arranged in the pre-sealing ring groove, the post-discharge sealing ring 55 is arranged in the post-sealing ring groove, and the outer sealing ring 56 for the copper sleeve is arranged in the outer sealing ring groove.

[0029] External threads are provided on the upper part of the discharge shaft 6. The discharge shaft compression nut 53 is meshed and connected with the external threads to compress the pre-discharge sealing ring 54 between the discharge sealing ring baffle 51 and the discharge sealing ring copper sleeve 52 and the post-discharge sealing ring 55 between the discharge sealing ring copper sleeve 52 and the discharge shaft compression nut 53, so that when extracting raw materials, the liquid raw materials will not overflow between the discharge seat 1, the discharge sealing device 5, and the discharge shaft 6.

[0030] The discharge check valve 7 is arranged in the discharge cylinder 2 and includes a discharge check valve rod 71, a front part 72 of the discharge check valve, and a rear part 73 of the discharge check valve. The discharge check valve rod 71 includes a rod part and a head. The lower end of the rod part is coaxially and fixedly connected to the head, and the upper end of the rod part is coaxially connected to the lower end of the discharge shaft 6. Accordingly, a first installation jack is provided at the lower end of the discharge shaft 6 to facilitate the insertion of the upper end of the rod part. In order to make the connection between the rod part and the discharge shaft 6 firm, the rod part is connected with the inner wall of the first installation jack in an interference fit manner. A first slope 71A is formed on one side of the head facing the rod part, and a diversion groove is provided on the side wall of the rod part to communicate with the first slope 71A. The head is inserted into the communication hole, and a gap for raw material flow is formed between the head and the communication hole. And the lower end of the head, that is, the end of the head far from the rod part, is flush with the lower surface of the connection sleeve abutting portion 32, and a second installation jack is also formed to facilitate the insertion of the feed shaft 9.

[0031] The upper end of the front part 72 of the discharge one-way valve is connected to the lower end of the rear part 73 of the discharge one-way valve. The two are jointly sleeved on the rod part and can slide along the rod part. The front part 72 of the discharge one-way valve forms a second slope surface 72A corresponding to the first slope surface 71A on the side facing the head. The first slope surface 71A corresponds to the second slope surface 72A and can be completely fitted. The rear part 73 of the discharge one-way valve is provided with a diversion hole communicating with the diversion groove. The liquid raw material can flow into the space between the front part 72 of the discharge one-way valve and the discharge one-way valve rod 71 from the gap between the first slope surface 71A and the second slope surface 72A, and then flow out from the diversion hole. When the first slope surface 71A is in contact with the second slope surface 72A, the channel is closed and the conveyance of the liquid raw material is suspended.

[0032] The upper end of the feed shaft 9 is inserted into the second installation jack, and for firm connection, the feed shaft 9 is connected with the inner wall of the second installation jack by interference fit. Thus, the discharge shaft 6, the discharge one-way valve rod 71, and the feed shaft 9 are kept coaxial, and the external power device drives the discharge shaft 6, the discharge one-way valve rod 71, and the feed shaft 9 to rotate coaxially.

[0033] The lower end of the feed shaft 9 extends from the connection sleeve 3 into the feed cylinder 4 and is connected to the feeder 10. The feeder 10 is arranged at the feed port of the feed cylinder 4. The feeder 10 includes a plurality of scraping plates, and the scraping plates surround the feed shaft 9 and are fixedly connected to the feed shaft 9. When the feed shaft 9 drives the feeder 10 to rotate, the scraping plates can suck the raw material into the infusion cavity and make the raw material move upward.

[0034] The sliding one-way valve 8 is arranged in the connection sleeve 3 and sleeved on the feed shaft 9. The sliding one-way valve 8 includes a sliding one-way valve seat 81, a front part 82 of the sliding one-way valve, a rear part 83 of the sliding one-way valve, and a sliding one-way valve retaining ring 84.

[0035] The sliding one-way valve seat 81 is circular ring-shaped, and the outer side wall is slidably and sealingly connected to the inner wall of the pipe body 31 of the connection sleeve. A first infusion hole is opened in the middle of the sliding one-way valve seat 81, and the feed shaft 9 passes through the first infusion hole and forms a gap for liquid passage with the inner wall of the first infusion hole. The lower end of the rear part 83 of the sliding one-way valve is connected to the upper end of the front part 82 of the sliding one-way valve. The two are jointly sleeved on the feed shaft 9 and the outer wall of the rear part 83 of the sliding one-way valve abuts against the inner wall of the pipe body 31 of the connection sleeve. A second infusion hole is opened in the rear part 83 of the sliding one-way valve, and the lower end of the second infusion hole communicates with the first infusion hole. The side of the front part 82 of the sliding one-way valve facing the sliding one-way valve seat 81 forms a third slope surface 81B, and the side of the sliding one-way valve seat 81 facing the front part 82 of the sliding one-way valve forms a fourth slope surface 82B corresponding to the third slope surface 81B. The third slope surface 81B and the fourth slope surface 82B can be completely fitted.

[0036] The upper surface of the sliding check valve retaining ring 84 abuts against the lower surface of the connecting sleeve abutting portion 32, and the lower surface of the sliding check valve retaining ring 84 abuts against the upper surface of the rear part 83 of the sliding check valve. A third infusion hole is formed in the sliding check valve retaining ring 84. The lower end of the third infusion hole communicates with the upper end of the second infusion hole, and the upper end of the third infusion hole communicates with the communication hole in the middle of the connecting sleeve abutting portion 32.

[0037] When the sliding check valve seat 81 slides up and down, a gap can be formed between the third slope 81B and the fourth slope 82B, or the two can be fitted together. When a gap is formed, the raw material can enter the second infusion hole through the gap between the third slope 81B and the fourth slope 82B, and continue to move upward through the second infusion hole, and sequentially pass through the third infusion hole and the communication hole; when the third slope 81B is completely fitted with the fourth slope 82B, the infusion cavity is temporarily closed.

[0038] When using this pumping pump, place this pumping pump vertically into the raw material barrel so that the lower feed port is immersed in the raw material, and the upper discharge port 13 communicates with external equipment. The upper end of the uppermost discharge shaft 6 is connected to a power device. The power device can drive the discharge shaft 6 to rotate, and then drive the feeder 10 to rotate through the discharge check valve 7 and the feed shaft 9 in sequence, sucking the raw material into the infusion cavity. The continuous upward thrust generated by the rotation of the feeder 10 pushes the raw material to move upward along the infusion cavity, first passing through the feed cylinder 4 and then sequentially passing through the first infusion hole, the second infusion hole, the third infusion hole and the connection hole into the connecting sleeve 3. Then it enters between the front part 72 of the discharge check valve and the discharge check valve rod 71 through the gap between the first slope 71A and the second slope 72A, and then flows out from the diversion hole. And continue to move upward along the diversion groove, flowing into the gap between the discharge shaft 6 and the inner wall of the discharge hole. The liquid raw material can enter the discharge port 13 through this gap and then flow out from the discharge port 13. Thus, the entire pumping process is completed.

[0039] When the pressure at the discharge port 13 is too high, greater than a preset first threshold value (the value of the first threshold value is determined according to actual needs and can be adjusted by changing the specific model of the discharge check valve 7), the front part 72 of the discharge check valve and the rear part 73 of the discharge check valve move downward under the action of pressure, so that the first slope 71A fits the second slope 72A, closing the discharge check valve 7 and temporarily stopping the feeding. When the pressure at the discharge port 13 returns to the normal value, the upward thrust generated by the rotation of the feeder 10 can push the front part 72 of the discharge check valve and the rear part 73 of the discharge check valve upward to return to the original position, separating the first slope 71A from the second slope 72A, thus resuming the feeding.

[0040] When the pressure at the feed inlet is too high, greater than a preset second threshold value (the value of the second threshold is determined according to actual requirements and can be adjusted by changing the specific model of the sliding one-way valve 8), the sliding one-way valve seat 81 moves upward under the action of the pressure, so that the third slope 81B fits the second slope 72A, closing the sliding one-way valve 8 and stopping the feeding display. When the pressure at the feed inlet returns to the normal level, under the action of gravity, the sliding one-way valve seat 81 falls back to the initial position, separating the third slope 81B from the fourth slope 82B, thus restoring the feeding.

[0041] Implementing the embodiments of the present invention has the following beneficial effects: This pumping pump is provided with a discharge one-way valve and a sliding one-way valve. When the pressure at the discharge port is greater than the first threshold value, the discharge one-way valve closes, preventing the substances in the production equipment from flowing back and contaminating the raw materials in the raw material storage equipment; when the pressure at the feed inlet is greater than the second threshold value, the sliding one-way valve closes, temporarily stopping the addition of raw materials to the production equipment and preventing the over-addition of raw materials in the production equipment; thus effectively solving the adverse effects caused by the abnormal increase in pressure in the raw material storage equipment or production equipment.

[0042] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A material extraction pump, characterized in that, It includes: a discharge seat, a discharge cylinder, a connecting sleeve, a feed cylinder, a discharge sealing device, a discharge shaft, a discharge check valve, a sliding check valve, a feed shaft, and a feeder. The discharge seat is cylindrical. The discharge seat, the discharge cylinder, the connecting sleeve, and the feed cylinder are sequentially connected end to end to form an infusion cavity. The port at one end of the feed cylinder away from the discharge seat is the feed port. The discharge shaft is arranged in the discharge seat, with one end extending outside the discharge seat and the other end extending into the discharge cylinder. The discharge shaft is hermetically connected to the inner wall of the discharge seat through the discharge sealing device. The discharge check valve is arranged in the discharge cylinder, with one end coaxially connected to the discharge shaft and the other end coaxially connected to the feed shaft. The other end of the feed shaft passes through the sliding check valve arranged in the connecting sleeve and extends into the feed cylinder, and is connected to the feeder arranged in the feed cylinder. A discharge port is formed on the side wall of the discharge seat to communicate with the infusion cavity. When the pressure at the discharge port is greater than the first threshold, the discharge check valve closes. When the pressure at the feed port is greater than the second threshold, the sliding check valve closes. The discharge seat includes a discharge seat tube body and a discharge seat abutting portion. The discharge seat tube body is cylindrical, and the discharge seat abutting portion is annular. The outer wall of the discharge seat abutting portion is fixedly connected to the inner wall of the discharge seat tube body. The discharge check valve includes a discharge check valve rod, a front part of the discharge check valve, and a rear part of the discharge check valve. The discharge check valve rod includes a rod portion and a head. One end of the rod portion is coaxially fixedly connected to the head, and the other end of the rod portion is coaxially connected to the discharge shaft. A first slope surface is formed on one side of the head facing the rod portion. A diversion groove is formed on the side wall of the rod portion to communicate with the first slope surface. The front part and the rear part of the discharge check valve are jointly sleeved on the rod portion and can slide along the rod portion. A second slope surface corresponding to the first slope surface is formed on one side of the front part of the discharge check valve facing the head. The first slope surface and the second slope surface can be completely fitted. A diversion hole communicating with the diversion groove is formed in the rear part of the discharge check valve. The connecting sleeve includes a connecting sleeve tube body and a connecting sleeve abutting portion. The outer wall of the connecting sleeve abutting portion is fixedly connected to the inner wall of the connecting sleeve tube body. Both side surfaces of the connecting sleeve abutting portion are flat, and a communication hole is formed in the middle. The head is inserted into the communication hole, and the end of the head away from the rod portion is flush with the end of the connecting sleeve abutting portion away from the rod portion. The sliding one-way valve includes a sliding one-way valve seat, a front part of the sliding one-way valve, and a rear part of the sliding one-way valve. The outer wall of the sliding one-way valve seat is slidably and sealingly connected to the inner wall of the connecting sleeve. A first liquid infusion hole is formed in the middle of the sliding one-way valve seat. The feeding shaft passes through the first liquid infusion hole and forms a gap for liquid passage with the inner wall of the first liquid infusion hole. The rear part of the sliding one-way valve is sleeved on the feeding shaft and its outer wall abuts against the inner wall of the tube body of the connecting sleeve. A second liquid infusion hole is formed in the rear part of the sliding one-way valve, and the second liquid infusion hole communicates the first liquid infusion hole with the communication hole. The front part of the sliding one-way valve is connected to the rear part of the sliding one-way valve and sleeved on the feeding shaft. A third slope surface is formed on the side of the front part of the sliding one-way valve facing the sliding one-way valve seat, and a fourth slope surface corresponding to the third slope surface is formed on the side of the sliding one-way valve seat facing the front part of the sliding one-way valve. The third slope surface and the fourth slope surface can be completely fitted together.

2. The pumping pump according to claim 1, characterized in that, One end of the discharging shaft close to the discharging one-way valve forms a first installation socket. One end of the rod part away from the head is inserted into the first installation socket, and the rod part is also connected with the inner wall of the first installation socket in an interference fit manner.

3. The pumping pump according to claim 2, characterized in that, One end of the head away from the rod part forms a second installation socket. One end of the feeding shaft away from the feeder is inserted into the second installation socket, and the feeding shaft is also connected with the inner wall of the second installation socket in an interference fit manner.

4. The pumping pump according to claim 3, characterized in that, The sliding one-way valve further includes a sliding one-way valve retaining ring sleeved on the feeding shaft. One end of the sliding one-way valve retaining ring abuts against the abutting part of the connecting sleeve, and the other end thereof is connected to the end of the rear part of the sliding one-way valve away from the sliding one-way valve seat. A third liquid infusion hole is formed in the sliding one-way valve, and the third liquid infusion hole communicates the second liquid infusion hole with the communication hole.

5. The pumping pump according to claim 4, characterized in that, The feeder includes a scraper. A plurality of the scrapers are fixed to the feeding shaft, and when the scrapers rotate with the feeding shaft, they can suck the fluid into the liquid infusion cavity.

6. The pumping pump according to claim 5, characterized in that, Both side surfaces of the abutting part of the discharging seat are flat, and a discharging hole is formed in the middle. The discharging shaft passes through the discharging hole and forms a gap for liquid passage with the inner wall of the discharging hole. The feeding port passes through the tube body of the discharging seat and the abutting part of the discharging seat.

7. The pumping pump according to claim 6, characterized in that, The discharge sealing device includes a discharge sealing ring baffle, a discharge sealing ring copper sleeve, a discharge shaft pressing nut, a front discharge sealing ring, a rear discharge sealing ring, and an outer copper sleeve sealing ring. The discharge sealing ring baffle is sleeved on the discharge shaft and one end thereof abuts against the abutting portion of the discharge seat. The discharge sealing ring copper sleeve is sleeved on the discharge shaft and one end thereof abuts against the end of the discharge sealing ring baffle away from the abutting portion of the discharge seat. A front sealing ring groove is formed at one end of the discharge sealing ring copper sleeve close to the discharge sealing ring baffle. A rear sealing ring groove is formed at one end of the discharge sealing ring copper sleeve away from the discharge sealing ring baffle. An outer sealing ring groove is formed on the outer side surface of the discharge sealing ring copper sleeve. The front discharge sealing ring is arranged in the front sealing ring groove. The rear discharge sealing ring is arranged in the rear sealing ring groove. The outer copper sleeve sealing ring is arranged in the outer sealing ring groove. External threads are formed on the discharge shaft. The discharge shaft pressing nut is in meshing connection with the external threads, pressing the front discharge sealing ring between the discharge sealing ring baffle and the discharge sealing ring copper sleeve and the rear discharge sealing ring between the discharge sealing ring copper sleeve and the discharge shaft pressing nut.

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