A leak-proof structure of a reciprocating pump

Abstract

The application discloses a kind of anti-leakage structures of reciprocating pump, it is related to the field of reciprocating pump, including pump cylinder, outlet pipe, inlet pipe, fixed seat, pump body, pump shaft, connecting rod and piston rod, and the fixed seat one end is equipped with anti-leakage mechanism.The application is provided with anti-leakage assembly, staff moves down by rotating threaded rod, and drives bottom rack, so that multiple anti-leakage pressing blocks move to inboard simultaneously, anti-leakage pressing block can compress anti-leakage ring, to avoid medium leakage, while if liquid seeps into groove through the gap between anti-leakage ring and piston rod, rubber outer ring and rubber inner ring are made of water-absorbing swelling rubber material, liquid in groove is absorbed by water-absorbing swelling rubber, water-absorbing swelling rubber has elastic water stop and swelling water stop dual water stop function, even if anti-leakage ring and piston rod outside wear, rubber outer ring and rubber inner ring can also play effective anti-leakage effect, effectively avoid the medium leakage problem of reciprocating pump.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reciprocating pumps, in particular to a leak-proof structure of a reciprocating pump. BACKGROUND

[0002] Reciprocating pumps include piston pumps, metering pumps and diaphragm pumps, commonly known as reciprocating pumps, which are a type of positive displacement pump. Reciprocating pumps are widely used. Reciprocating pumps are delivery machines that directly provide energy to liquids in the form of pressure energy through the reciprocating motion of pistons. According to the driving mode, reciprocating pumps are divided into two categories: motor-driven pumps and direct-acting pumps.

[0003] In the prior art, such as Chinese patent No. CN113685329A "a reciprocating electromagnetic pump", provided with a fixed plate, a movable plate, a tension spring is arranged between the fixed plate and the movable plate, a sealing membrane is arranged between the fixed plate and the movable plate, the sealing membrane and the fixed plate, the movable plate enclose a power cavity, an electromagnet is installed outside the pump body.

[0004] However, the existing reciprocating pump in the use process, due to the reciprocating motion of the piston, it will inevitably cause wear to the side surface of the sealing ring and the packing seal ring, when the wear reaches a certain degree, it will cause the side surface of the sealing ring and the packing seal to appear gap, thereby causing medium leakage, often need to replace the sealing ring and the packing seal ring as a whole, affect the normal use of the reciprocating pump, for the above problems, put forward a kind of leak-proof structure of reciprocating pump. SUMMARY

[0005] The present application aims to provide a leak-proof structure of a reciprocating pump to solve the problem of the existing reciprocating pump in the use process, due to the reciprocating motion of the piston, it will inevitably cause wear to the side surface of the sealing ring and the packing seal ring, when the wear reaches a certain degree, it will cause the side surface of the sealing ring and the packing seal to appear gap, thereby causing medium leakage, often need to replace the sealing ring and the packing seal ring as a whole, affect the normal use of the reciprocating pump.

[0006] To achieve the above object, the application provides the following technical scheme: A leakage-proof structure of a reciprocating pump, comprising a pump cylinder, an outlet pipe, an inlet pipe, a fixed seat, a pump body, a pump shaft, a connecting rod and a piston rod, one end of the fixed seat is provided with a leakage-proof mechanism, one end of the connecting rod is rotatably connected with one end of the piston rod, and the other end of the connecting rod is rotatably connected with one end of the pump shaft, the leakage-proof mechanism comprises a box cover, a connecting pipe, a fixed screw rod, a mounting pipe, a packing gland, a sealing ring and a connecting ring, a cavity is formed in the inside of the box cover, and a leakage-proof assembly is mounted in the inside of the cavity, a threaded groove is formed in the top of the box cover, the inner wall of the mounting pipe is fixedly provided with the sealing ring, one end of the sealing ring is fixedly communicated with one end of the packing gland, and the other end of the sealing ring is externally provided with a rubber outer ring, one end of the sealing ring is internally provided with a rubber inner ring, one end of the connecting ring is fixedly communicated with one end of the sealing ring, and the other end of the connecting ring is provided with a leakage-proof ring, recesses are symmetrically formed in the two sides of the connecting ring.

[0007] The leakage-proof assembly comprises a fixed ring, a sector plate, an inner tooth ring, a limiting ring, a threaded rod and a leakage-proof pressing block, the outer side of the inner tooth ring is rotatably mounted with the outer side of the fixed ring, the outer side of the limiting ring is fixedly mounted with the outer side of the fixed ring, a plurality of racks are arranged in an annular array on the outer side of the limiting ring, one end of one of the racks is rotatably connected with one end of the threaded rod, a plurality of gear rods are arranged in an annular array and engaged with the inner side of the inner tooth ring, the outer side of the rack is fixedly connected with one side of the sector plate, the outer side of the gear rod is engaged with the outer side of the rack, one end of the leakage-proof pressing block is fixedly connected with one end of the sector plate, and one side of the leakage-proof pressing block is provided with an elastic pad.

[0008] Preferably, one side of the fixed ring is rotatably mounted with one end of the gear rod, and the other side of the fixed ring is fixedly mounted with the inner wall of the cavity, and the outer wall of the threaded rod is threadedly connected with the inner wall of the threaded groove.

[0009] Preferably, the outer side of the elastic pad is in contact with the outer side of the leakage-proof ring, one end of the mounting pipe is fixedly communicated with one end of the box cover, and the other end of the mounting pipe is fixedly mounted with the connecting pipe through a plurality of fixed screw rods.

[0010] Preferably, four insertion blocks are annularly inserted in one end of the connecting pipe, four insertion holes are annularly formed in one end of the packing gland, and one end of the insertion block is fixedly inserted in the insertion hole.

[0011] Preferably, the inner walls of the leakage-proof ring and the sealing ring are in contact with the outer side of the piston rod, and the limiting ring and the inner tooth ring are coaxially arranged.

[0012] Preferably, one end of the fixed seat is fixedly mounted with one end of the pump body, and the other end of the fixed seat is welded with one end of the connecting pipe.

[0013] Preferably, the output end of the pump body is fixedly connected with one end of the pump shaft, and one end of the pump cylinder is welded with one end of the box cover.

[0014] Preferably, one end of the pump cylinder is fixedly installed with one end of the inlet pipe in a threaded mode, and the other end of the pump cylinder is fixedly installed with one end of the outlet pipe in a threaded mode.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1、In the present application, when the staff rotates the threaded rod, the threaded rod drives the bottom end rack to move downward, the gear rod rotates, and then drives the inner tooth ring to rotate, so that multiple gear rods rotate simultaneously, and then multiple sector plates and the anti-leakage pressing block move inward simultaneously. The anti-leakage ring and the elastic pad are both made of rubber material, the inner side of the anti-leakage ring is attached to the outer side of the piston rod and is pressed tightly, and at the same time, multiple anti-leakage pressing blocks are attached to the outer side of the anti-leakage ring through the elastic pad. The anti-leakage pressing block can press the anti-leakage ring tightly, so as to avoid the gap between the anti-leakage ring and the piston rod, thereby avoiding the problem of medium leakage during the reciprocating movement of the piston rod, prolonging the service life of the anti-leakage ring, and reducing the replacement frequency of the internal anti-leakage ring. At the same time, the elastic pad can avoid excessive pressure of the anti-leakage pressing block on the piston rod, so that the piston rod cannot move normally.

[0017] 2、In the present application, if the anti-leakage ring and the piston rod have a wear gap, when the liquid reaches the connecting ring through the gap between the anti-leakage ring and the piston rod, the liquid will seep into the grooves on both sides of the connecting ring. The outer rubber ring and the inner rubber ring are both made of water-absorbing and swelling rubber material, and the water-absorbing and swelling rubber has the functions of elastic water stop and swelling water stop. The liquid in the groove is absorbed by the water-absorbing and swelling rubber of the outer rubber ring or the inner rubber ring, and the rubber expands and deforms. When the stress resisting deformation and the osmotic pressure difference reach balance, the water-absorbing and swelling rubber has a relatively stable water stopping and plugging effect. Even if the outer side of the anti-leakage ring and the piston rod is worn, the outer rubber ring and the inner rubber ring can still effectively prevent leakage, effectively avoiding the problem of medium leakage of the reciprocating pump, and avoiding corrosion of the driving mechanism caused by liquid leakage. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the anti-leakage structure of the reciprocating pump of the present application;

[0019] Figure 2 It is a structural schematic view of the pump body of the anti-leakage structure of the reciprocating pump of the present application;

[0020] Figure 3 It is a structural schematic view of the anti-leakage mechanism of the anti-leakage structure of the reciprocating pump of the present application;

[0021] Figure 4 An exploded view of the anti-leakage mechanism of the anti-leakage structure of the reciprocating pump of the present application;

[0022] Figure 5 An internal structure diagram of the tank cover of the anti-leakage structure of the reciprocating pump of the present application;

[0023] Figure 6 A front view of the anti-leakage mechanism of the anti-leakage structure of the reciprocating pump of the present application;

[0024] Figure 7 A structure diagram of the anti-leakage assembly of the anti-leakage structure of the reciprocating pump of the present application;

[0025] Figure 8 An enlarged view of the details at A in the anti-leakage structure of the reciprocating pump of the present application; Figure 6

[0026] In the figure: 1, pump cylinder; 2, anti-leakage mechanism; 3, outlet pipe; 4, inlet pipe; 5, fixed seat; 6, pump body; 7, pump shaft; 8, connecting rod; 9, piston rod; 21, anti-leakage assembly; 22, tank cover; 23, connecting pipe; 24, fixed screw; 25, threaded groove; 26, mounting pipe; 27, stuffing box gland; 28, plug; 29, anti-leakage ring; 30, insertion hole; 31, sealing ring; 32, rubber outer ring; 33, rubber inner ring; 34, recess; 35, connecting ring; 36, cavity; 211, fixed ring; 212, fan-shaped plate; 213, inner tooth ring; 214, limiting ring; 215, gear rod; 216, threaded rod; 217, anti-leakage pressing block; 218, elastic pad; 219, rack. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Embodiment one

[0029] Reference Figures 1-6 and Figure 8 ​The application discloses a leakage-proof structure of a reciprocating pump, which comprises a pump cylinder 1, an outlet pipe 3, an inlet pipe 4, a fixed base 5, a pump body 6, a pump shaft 7, a connecting rod 8 and a piston rod 9, the fixed base 5 is provided with a leakage-proof mechanism 2 at one end, one end of the connecting rod 8 is rotatably connected with one end of the piston rod 9, and the other end of the connecting rod 8 is rotatably connected with one end of the pump shaft 7, the leakage-proof mechanism 2 comprises a box cover 22, a connecting pipe 23, a fixing screw rod 24, a mounting pipe 26, a stuffing box cover 27, a sealing ring 31 and a connecting ring 35, the box cover 22 is internally provided with a cavity 36, the cavity 36 is internally provided with a leakage-proof assembly 21, a threaded groove 25 is formed in the top of the box cover 22, the sealing ring 31 is fixedly installed on the inner wall of the mounting pipe 26, one end of the sealing ring 31 is fixedly communicated with one end of the stuffing box cover 27, a rubber outer ring 32 is installed on the outer side of the other end of the sealing ring 31, a rubber inner ring 33 is installed on the inner side of one end of the sealing ring 31, one end of the connecting ring 35 is fixedly communicated with one end of the sealing ring 31, and the other end of the connecting ring 35 is provided with a leakage-proof ring 29, recesses 34 are symmetrically formed in the two sides of the connecting ring 35, the outer side of the elastic pad 218 is in abutment with the outer side of the leakage-proof ring 29, one end of the mounting pipe 26 is fixedly communicated with one end of the box cover 22, the other end of the mounting pipe 26 is fixedly installed on the connecting pipe 23 through a plurality of fixing screw rods 24, four plug blocks 28 are annularly and arrayedly inserted into one end of the connecting pipe 23, four insertion holes 30 are annularly and arrayedly formed in one end of the stuffing box cover 27, one end of the plug block 28 is fixedly inserted into the insertion hole 30, the inner walls of the leakage-proof ring 29 and the sealing ring 31 are in abutment with the outer side of the piston rod 9, one end of the fixed base 5 is fixedly installed on one end of the pump body 6, the other end of the fixed base 5 is weldedly fixed with one end of the connecting pipe 23, the output end of the pump body 6 is fixedly connected with one end of the pump shaft 7, one end of the pump cylinder 1 is weldedly fixed with one end of the box cover 22, one end of the pump cylinder 1 is fixedly installed on one end of the inlet pipe 4, and the other end of the pump cylinder 1 is fixedly installed on one end of the outlet pipe 3.

[0030] In the embodiment, as Figure 3As shown, the inlet pipe 4 is provided with a suction valve, and the outlet pipe 3 is provided with a discharge valve. When the piston rod 9 moves from left to right, the volume of the pump cylinder 1 increases, forming a low pressure, and the liquid is sucked into the pump cylinder 1 through the inlet pipe 4 and the suction valve. The discharge valve is closed under the action of the liquid pressure in the outlet pipe 3. When the piston rod 9 moves to the right end, the volume of the pump cylinder 1 is maximum. When the piston rod 9 moves from right to left, the liquid in the pump cylinder 1 is extruded, the pressure increases, the suction valve is closed, and the discharge valve is pushed open to discharge the liquid. When the piston rod 9 moves to the left end, the liquid is discharged, and a working cycle is completed. Thereafter, another cycle begins. Energy is provided to the liquid in the form of pressure energy through the reciprocating movement of the piston rod 9. If a wear gap occurs between the anti-leakage ring 29 and the piston rod 9 during use, the liquid will penetrate into the two recesses 34 in the connecting ring 35 through the gap between the anti-leakage ring 29 and the piston rod 9. The outer rubber ring 32 and the inner rubber ring 33 are made of water-absorbing and expanding rubber material. The liquid in the recess 34 is absorbed by the water-absorbing and expanding rubber of the outer rubber ring 32 or the inner rubber ring 33. The water-absorbing and expanding rubber has the functions of elastic water stop and expansion water stop. Even if the outer side of the anti-leakage ring 29 is worn after the outer side of the piston rod 9, the outer rubber ring 32 and the inner rubber ring 33 can also effectively prevent leakage.

[0031] Example two

[0032] Figures 5-8 As shown, the anti-leakage assembly 21 includes a fixed ring 211, a sector plate 212, an inner tooth ring 213, a limiting ring 214, a threaded rod 216, and an anti-leakage pressing block 217. The outer side of the inner tooth ring 213 is rotatably installed with the outer side of the fixed ring 211. The outer side of the limiting ring 214 is fixedly installed with the outer side of the fixed ring 211. A plurality of racks 219 are arranged in an annular array on the outer side of the limiting ring 214. One end of one of the racks 219 is rotatably connected with one end of the threaded rod 216. A plurality of gear rods 215 are arranged in an annular array on the inner side edge of the inner tooth ring 213. The outer side of the rack 219 is fixedly connected with one side of the sector plate 212. The outer side of the gear rod 215 is engaged with the outer side of the rack 219. One end of the anti-leakage pressing block 217 is fixedly connected with one end of the sector plate 212, and an elastic pad 218 is installed on one side of the anti-leakage pressing block 217. One end of the gear rod 215 is rotatably installed with one side of the fixed ring 211, and the other side of the fixed ring 211 is fixedly installed with the inner wall of the cavity 36. The outer wall of the threaded rod 216 is threadedly connected with the inner wall of the threaded groove 25. The limiting ring 214 and the inner tooth ring 213 are coaxially arranged.

[0033] In this embodiment, when the staff rotates the threaded rod 216, the threaded rod 216 drives the bottom end rack 219 to move downward, thereby rotating the gear rod 215 and driving the inner tooth ring 213 to rotate, so that the plurality of gear rods 215 rotate simultaneously, and the plurality of sector plates 212 and the anti-leakage block 217 move inward simultaneously. The anti-leakage ring 29 and the elastic pad 218 are both made of rubber material, the inner side of the anti-leakage ring 29 is attached to the outer side of the piston rod 9 and is pressed tightly, and at the same time, the plurality of anti-leakage blocks 217 are attached to the outer side of the anti-leakage ring 29 through the elastic pad 218. The anti-leakage block 217 can press the anti-leakage ring 29 tightly to avoid the gap between the anti-leakage ring 29 and the piston rod 9, thereby avoiding the problem of medium leakage during the reciprocating movement of the piston rod 9.

[0034] The working principle and method of using the device: when the reciprocating pump is in normal use, the pump body 6 drives the pump shaft 7 to rotate, one end of the pump shaft 7 is connected with the connecting rod 8 through the eccentric wheel, and the pump shaft 7 drives the piston rod 9 to move reciprocatingly through the connecting rod 8, as shown in Figure 3 The inlet pipe 4 is provided with a suction valve, and the outlet pipe 3 is provided with a discharge valve. When the piston rod 9 moves from left to right, the volume of the pump cylinder 1 increases, forming a low pressure, and the liquid is sucked into the pump cylinder 1 through the inlet pipe 4 and the suction valve, and the discharge valve is closed under the action of the liquid pressure in the outlet pipe 3. When the piston rod 9 moves to the right end, the volume of the pump cylinder 1 is maximum. When the piston rod 9 moves from right to left, the liquid in the pump cylinder 1 is extruded, the pressure increases, the suction valve is closed and pushes away the discharge valve to discharge the liquid, and the piston rod 9 moves to the left end, the liquid is discharged, and a working cycle is completed. Thereafter, another cycle begins, and energy is provided to the liquid in the form of pressure energy through the reciprocating movement of the piston rod 9 for conveying;

[0035] The fixed seat 5 is connected with the pump cylinder 1 and has the anti-leakage mechanism 2. The reciprocating pump reciprocates in the anti-leakage mechanism 2 during the working process. The anti-leakage mechanism 2 mainly comprises an anti-leakage assembly 21, a box cover 22, a connecting pipe 23, a mounting pipe 26, a stuffing box gland 27, an anti-leakage ring 29, a sealing ring 31 and a connecting ring 35. The anti-leakage assembly 21 is installed in the internal cavity 36 of the box cover 22. The piston rod 9 passes through the stuffing box gland 27, the sealing ring 31, the connecting ring 35 and the anti-leakage ring 29 in sequence;

[0036] As Figure 7As shown, the leakage prevention assembly 21 is provided with eight fan-shaped plates 212, eight racks 219, eight gear rods 215 and eight leakage prevention blocks 217, and one end of the topmost rack 219 is rotationally connected with the threaded rod 216. When the staff rotates the threaded rod 216, the outer side of the threaded rod 216 is threadedly connected with the inner wall of the threaded groove 25, the threaded rod 216 drives the bottom rack 219 to move downward, thereby driving the gear rod 215 to rotate, and further driving the inner tooth ring 213 to rotate, so that the plurality of gear rods 215 rotate simultaneously, and further drive the plurality of fan-shaped plates 212 and the leakage prevention blocks 217 to move inward simultaneously. The leakage prevention ring 29 and the elastic pad 218 are both made of rubber material, the inner side of the leakage prevention ring 29 is in close contact with the outer side of the piston rod 9 and is pressed tightly, and at the same time, the plurality of leakage prevention blocks 217 are in close contact with the outer side of the leakage prevention ring 29 through the elastic pad 218. The leakage prevention blocks 217 can press the leakage prevention ring 29 tightly to avoid the gap between the leakage prevention ring 29 and the piston rod 9, thereby avoiding the problem of medium leakage during the reciprocating movement of the piston rod 9. At the same time, the elastic pad 218 can avoid the excessive pressure of the leakage prevention blocks 217 on the piston rod 9, which causes the piston rod 9 to be unable to move normally. The staff can regularly detect the leakage prevention assembly 21. When the inner wall of the leakage prevention ring 29 is worn due to the long-term reciprocating movement of the piston rod 9, the threaded rod 216 is rotated to make the threaded rod 216 continue to move downward, thereby making the leakage prevention blocks 217 always press the leakage prevention ring 29 tightly, effectively avoiding the problem of medium leakage of the reciprocating pump, prolonging the service life of the leakage prevention ring 29, and reducing the replacement frequency of the internal leakage prevention ring 29.

[0037] Meanwhile, the connecting ring 35, the sealing ring 31 and the stuffing box cover 27 are arranged on the inner wall of the installation pipe 26, one end of the sealing ring 31 is fixedly connected with one end of the connecting ring 35, the other end of the sealing ring 31 is fixedly connected with one end of the stuffing box cover 27, one end of the connecting ring 35 is connected with the anti-leakage ring 29, if the wear gap appears between the anti-leakage ring 29 and the piston rod 9 during the use of the reciprocating pump, when the liquid reaches the connecting ring 35 through the gap between the anti-leakage ring 29 and the piston rod 9, the liquid will seep into the two side grooves 34 of the connecting ring 35, the outer side groove 34 of the connecting ring 35 is connected with the rubber outer ring 32, and the inner side groove 34 of the connecting ring 35 is connected with the rubber inner ring 33, the rubber outer ring 32 and the rubber inner ring 33 are made of water-absorbing and expanding rubber material, the water-absorbing and expanding rubber has the functions of elastic water stopping and expansion water stopping, the liquid in the groove 34 is absorbed by the water-absorbing and expanding rubber of the rubber outer ring 32 or the rubber inner ring 33, when the water-absorbing and expanding rubber contacts with water, the water molecules continuously enter the water-absorbing and expanding rubber through diffusion, capillary and surface adsorption and other physical actions, form strong affinity with the hydrophilic groups in the rubber, make the rubber swell and deform, when the stress resisting deformation and the osmotic pressure difference reach balance, the water-absorbing and expanding rubber has the relatively stable water stopping and leakage stopping effect, even if the outer side of the anti-leakage ring 29 is worn after the wear of the piston rod 9, the rubber outer ring 32 and the rubber inner ring 33 can also effectively prevent leakage, effectively avoid the medium leakage problem of the reciprocating pump, avoid the corrosion of the driving mechanism caused by the liquid leakage.

[0038] Although the present application has been described in detail with reference to the foregoing embodiments, technical solutions recorded in the foregoing embodiments can be modified or some technical features can be replaced by equivalent ones by those skilled in the art, any modification, equivalent replacement, improvement and the like within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A leak-proof structure for a reciprocating pump, comprising a pump cylinder (1), an outlet pipe (3), an inlet pipe (4), a fixed base (5), a pump body (6), a pump shaft (7), a connecting rod (8), and a piston rod (9), characterized in that: A leak-proof mechanism (2) is installed at one end of the fixed base (5). One end of the connecting rod (8) is rotatably connected to one end of the piston rod (9), and the other end of the connecting rod (8) is rotatably connected to one end of the pump shaft (7). The leak-proof mechanism (2) includes a box cover (22), a connecting pipe (23), a fixing screw (24), an installation pipe (26), a stuffing box cover (27), a sealing ring (31), and a connecting ring (35). A cavity (36) is opened inside the box cover (22), and a leak-proof component (21) is installed inside the cavity (36). The top is provided with a threaded groove (25), and a sealing ring (31) is fixedly installed on the inner wall of the mounting tube (26). One end of the sealing ring (31) is fixedly connected to one end of the stuffing gland cover (27), and a rubber outer ring (32) is installed on the outer side of the other end of the sealing ring (31). A rubber inner ring (33) is installed on the inner side of one end of the sealing ring (31). One end of the connecting ring (35) is fixedly connected to one end of the sealing ring (31), and a leak-proof ring (29) is installed on the other end of the connecting ring (35). Grooves (34) are symmetrically provided on both sides of the connecting ring (35). The leak-proof component (21) includes a fixed ring (211), a sector plate (212), an internal toothed ring (213), a limiting ring (214), a threaded rod (216), and a leak-proof pressure block (217). The outer side of the internal toothed ring (213) is rotatably mounted to the outer side of the fixed ring (211), and the outer side of the limiting ring (214) is fixedly mounted to the outer side of the fixed ring (211). The outer side of the limiting ring (214) is provided with a ring array of multiple racks (219), one of which is a rack (212). One end of 9) is rotatably connected to one end of the threaded rod (216). The inner edge of the internal gear ring (213) is annularly meshed with multiple gear rods (215). The outer side of the rack (219) is fixedly connected to one side of the sector plate (212). The outer side of the gear rod (215) meshes with the outer side of the rack (219). One end of the anti-leakage pressure block (217) is fixedly connected to one end of the sector plate (212), and an elastic pad (218) is installed on one side of the anti-leakage pressure block (217).

2. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: One side of the fixed ring (211) is rotatably installed with one end of the gear rod (215), and the other side of the fixed ring (211) is fixedly installed with the inner wall of the cavity (36). The outer wall of the threaded rod (216) is threadedly connected to the inner wall of the threaded groove (25).

3. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: The outer side of the elastic pad (218) is in contact with the outer side of the anti-leakage ring (29). One end of the mounting tube (26) is fixedly connected to one end of the box cover (22), and the other end of the mounting tube (26) is fixedly installed to the connecting tube (23) by multiple fixing screws (24).

4. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: One end of the connecting pipe (23) is connected to four plugs (28) in a ring array, and one end of the stuffing gland cover (27) is provided with four insertion holes (30) in a ring array. One end of the plug (28) is inserted and fixed into the insertion hole (30).

5. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: The inner walls of the anti-leakage ring (29) and the sealing ring (31) are both in contact with the outer side of the piston rod (9), and the limiting ring (214) and the internal toothed ring (213) are coaxially arranged.

6. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: One end of the fixed seat (5) is fixedly installed to one end of the pump body (6), and the other end of the fixed seat (5) is welded and fixed to one end of the connecting pipe (23).

7. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: The output end of the pump body (6) is fixedly connected to one end of the pump shaft (7), and one end of the pump cylinder (1) is welded and fixed to one end of the box cover (22).

8. The anti-leakage structure of a reciprocating pump according to claim 1, characterized in that: One end of the pump cylinder (1) is threadedly fixed to one end of the inlet pipe (4), and the other end of the pump cylinder (1) is threadedly fixed to one end of the outlet pipe (3).

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