Horizontal high pressure sludge pump

Abstract

The application discloses a horizontal high-pressure sludge pump, which comprises a hydraulic station and a pump body, wherein the pump body comprises a base, a support frame, a hydraulic cylinder, two pump barrels, a piston rod, a feeding pipe, a discharging pipe, a reversing mechanism and four one-way valves; the pump barrel comprises a barrel body and an approximately circular truncated cone-shaped outer end cover which is detachably arranged at the outer side end of the barrel body; the side surface of the outer end cover is provided with two mutually symmetrical feeding and discharging ports, and the lower end of the side surface is provided with a blowdown port; a detachable cover is arranged on the blowdown port; the sludge pump further comprises a barrel wall cleaning mechanism which is installed on the outer end cover and used for cleaning the inner wall of the barrel body; the barrel wall cleaning mechanism comprises two cleaning execution ends which are respectively arranged in the corresponding outer end cover, and further comprises at least one cleaning driving end which is detachably installed on the outer end cover and in transmission connection with the corresponding cleaning execution end. The sludge pump designed in this way has a lower failure rate and a longer maintenance interval.

Description

TECHNICAL FIELD

[0001] The application relates to the field of pumps, in particular to a horizontal high-pressure sludge pump. BACKGROUND

[0002] The high-pressure sludge pump is a device for conveying high-concentration sludge, which usually adopts a piston structure and is driven by a hydraulic power device to suck sludge into the pump cavity and discharge it at high pressure. Its working principle mainly utilizes the reciprocating motion of the piston to generate pressure changes, thereby realizing the suction and discharge of sludge. It is widely used in sewage treatment plants, environmental protection engineering, industrial production and other fields.

[0003] The high-pressure sludge pump disclosed by the application is a horizontal double-cylinder single-feed sludge pump, which mainly comprises a hydraulic station and a pump body, wherein the pump body mainly comprises a hydraulic cylinder, a pump barrel, an inlet and outlet port, a feed pipe, a discharge pipe, a one-way valve, a piston rod, and a reversing mechanism. The piston rod is provided with a hydraulic cylinder piston and a pump barrel piston.

[0004] The existing double-cylinder single-feed sludge pump mainly has the problems of high failure rate and short maintenance interval period. The failure zones are mainly concentrated in the one-way valve and the pump barrel. The main reasons for the failure of the pump barrel are that the sludge is easily left on the inner wall of the pump barrel, the solid particles in the sludge can wear out the pump barrel piston sealing element and the inner wall of the pump barrel, and the chemical components in the sludge can cause corrosion to the inner wall of the pump barrel. The residual sludge can accelerate this corrosion process, which is particularly evident when the sludge pump is suddenly used after a long period of idling. The main reason for the failure of the one-way valve is that when the reverse flow is intercepted, the valve core will heavily hit the valve bottom, generating a large impact and vibration, so the valve core and the valve bottom are prone to damage. SUMMARY

[0005] The purpose of the application is to provide a horizontal high-pressure sludge pump with a lower failure rate and a longer maintenance interval period.

[0006] The purpose of the application is achieved by a horizontal high-pressure sludge pump, which comprises a hydraulic station and a pump body, and the pump body comprises a base, a support frame, a hydraulic cylinder, two pump barrels, a piston rod, a feed pipe, a discharge pipe, a reversing mechanism, and four one-way valves. The pump barrel comprises a barrel body and an approximately circular truncated cone-shaped outer end cover which is detachably arranged at the outer side end of the barrel body. The side surface of the outer end cover is provided with two mutually symmetrical inlet and outlet ports, and the lower end of the side surface is provided with a blowdown port. A detachable cover is arranged on the blowdown port. The inlet and outlet ports are respectively connected to the corresponding one-way valves.

[0007] The sludge pump further comprises a barrel wall cleaning mechanism installed on the outer side end cover for cleaning the inner wall of the barrel, the barrel wall cleaning mechanism comprising two cleaning execution ends respectively arranged inside the corresponding outer side end cover, and further comprising at least one cleaning driving end detachably installed on the outer side end cover and in transmission connection with the corresponding cleaning execution end;

[0008] The cleaning execution end comprises a main shaft installed on the axis of the outer side end cover, a scraper seat arranged at the inner side end of the main shaft, a limiting protrusion arranged at the middle part of the main shaft, and a locking nut arranged at the outer side end of the main shaft; the main shaft is internally provided with a flushing channel, and the inner side end of the main shaft is provided with a plurality of flushing nozzles in communication with the flushing channel; the scraper seat is provided with two scraper arms symmetrically with respect to each other, and the scraper arms are provided with scrapers; the inner side of the outer side end cover is provided with a limiting sleeve, and the inner side end of the limiting sleeve is provided with a limiting groove for cooperation with the scraper arms.

[0009] The cleaning driving end comprises a nut seat detachably installed on the outer side end cover, and a screw rod in threaded cooperation with the nut seat; the inner side of the nut seat is provided with a locking nut seat; the tail part of the screw rod is provided with a hand wheel and a rotary joint, and the screw rod is also internally provided with a flushing channel; the screw rod and the main shaft are provided with an interfacing mechanism for mutual connection and fixation.

[0010] Compared with the prior art, the high-pressure sludge pump provided by the application has the advantages of lower failure rate and longer maintenance interval; specifically, on the one hand, the barrel wall cleaning mechanism is added, so that the inner wall of the pump barrel can be cleaned in time without disassembling the pump barrel, thereby reducing the residue of sludge and reducing its harm; on the other hand, the buffer design is performed inside the one-way valve, so as to reduce the impact of the valve core on the valve body when the valve core reversely intercepts, thereby prolonging the overall service life of the one-way valve.

[0011] As a preferred scheme of the application, the interfacing mechanism comprises an interfacing protrusion and an interfacing groove, the interfacing protrusion is arranged at the end part of the screw rod and is provided with a locking groove in the middle part, the interfacing groove is arranged at the end part of the main shaft and is provided with a sealing washer at the bottom, the interfacing protrusion is detachably inserted into the interfacing groove and is in spline connection with the interfacing groove, and the interfacing groove is provided with a plurality of counterbores which are respectively and centrally symmetrically arranged at the outer periphery of the interfacing groove and correspond to the locking groove in position, and the counterbores are provided with locking screws.

[0012] Further, when the cleaning execution end is retracted for idling, the limiting protrusion abuts against the outer side end cover, the scraper seat is retracted to the end part of the limiting sleeve, and the scraper arms are in cooperation with the corresponding limiting grooves; at this time, the mating surfaces of the limiting protrusion, the main shaft and the outer side end cover are all provided with sealing rings I.

[0013] As a preferred scheme of the present application, the one-way valve comprises a valve body, an outlet is arranged on the outer side of the valve body; a valve cover is detachably arranged on the top of the valve body; a valve core is arranged inside the valve body and is slidably mounted on the valve cover; a buffer sleeve sliding seat is arranged on the inner bottom of the valve body and is provided with a buffer sleeve in sliding cooperation therewith; a sliding sealing assembly is arranged between the buffer sleeve sliding seat and the buffer sleeve; and a feeding port is detachably arranged on the lower end of the valve body and is provided with a buffer sleeve buffer spring on the inner side. This design can weaken the impact of the valve core on the bottom of the valve body when the reverse flow is intercepted, thereby prolonging the service life of the valve core, the valve body and the whole one-way valve.

[0014] Further, the sliding sealing assembly comprises, from bottom to top, a dustproof ring one, a sealing ring two, a stefen, a support ring, a sealing ring three and a dustproof ring two.

[0015] As a preferred scheme of the present application, the one-way valve further comprises a buffer sleeve lubricating mechanism, the buffer sleeve lubricating mechanism comprises a lubricating channel arranged on the valve body and in communication with the inner part of the buffer sleeve sliding seat; the upper and lower sides of the support ring are provided with annular lubricating channels; the inner side end of the lubricating channel is opposite to the support ring and is in communication with the annular lubricating channels; and the outer side end of the lubricating channel is provided with a sealing screw. This design can reduce the wear of the buffer sleeve and the buffer sleeve sliding seat, thereby prolonging the service life thereof.

[0016] As a preferred scheme of the present application, the valve core comprises a valve core seat, the valve core seat is detachably inserted into the valve cover, and the outer side end of the valve core seat is provided with a valve core seat fixing nut; a valve core body is slidably mounted on the valve core seat; a spring seat is arranged on the inner side of the valve cover; and a valve core buffer spring is sleeved on the valve core body, the upper end of the valve core buffer spring abuts against the spring seat, and the lower end of the valve core buffer spring abuts against the valve core body. This design facilitates the maintenance and replacement of the whole valve core. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present application.

[0018] Figure 2 It is a right view structural schematic diagram of the present application.

[0019] Figure 3 It is a schematic diagram of the cooperation relationship between the barrel wall cleaning mechanism and the pump barrel of the present application.

[0020] Figure 4 It is a structural schematic diagram of the docking mechanism of the present application.

[0021] Figure 5 It is a schematic diagram of the cooperation relationship between the limiting sleeve, the scraper seat and the scraper arm of the present application.

[0022] Figure 6 Structure diagram of the one-way valve.

[0023] Figure 7 For Figure 6 Local enlarged diagram at A in the middle.

[0024] Wherein, 1 base, 2 support frame, 3 hydraulic cylinder, 4 pump barrel, 4a barrel body, 4b outer end cover, 4c inlet and outlet port, 4d blowdown port, 4e cover, 5 feeding pipe, 6 discharging pipe, 7 slide rod seat, 8 slide rod, 9 induction block, 10 sensor fixing frame, 11 sensor, 12 one-way valve, 13 valve body, 13a discharging port, 14 valve cover, 15 valve core seat, 15a valve core seat fixing nut, 16 valve core body, 17 spring seat, 18 valve core buffer spring, 19 buffer sleeve slide seat, 20 buffer sleeve, 21 dustproof ring one, 21a dustproof ring two, 22 sealing ring one, 22b sealing ring two, 22b sealing ring three, 23 stellite seal, 24 support ring, 25 inlet port, 25a buffer sleeve buffer spring, 26 lubrication channel, 26a sealing screw, 27 annular lubrication channel, 28 screw fixing seat, 29 fixing screw, 30 main shaft, 31 scraper seat, 31a scraper arm, 31b scraper, 32 limit protrusion, 33 locking nut, 34 flushing channel, 35 flushing nozzle, 36 limit sleeve, 36a limit groove, 37 nut seat, 37a locking nut seat, 38 screw rod, 38a hand wheel, 39 rotary joint, 40 butt joint protrusion, 40a locking groove, 41 butt joint groove, 41a sealing washer, 42 countersunk hole, 42a locking screw. DETAILED DESCRIPTION

[0025] The above and other technical features and advantages of the present application will be more apparent from the following description taken in conjunction with the accompanying drawings.

[0026] The above and other technical features and advantages of the present application will be more apparent from the following description taken in conjunction with the accompanying drawings. Figures 1-6The utility model discloses a horizontal high pressure sludge pump, including hydraulic station and pump body, the pump body includes base 1, support frame 2, hydraulic cylinder 3, two pump barrels 4, piston rod, feed pipe 5, discharge pipe 6, reversing mechanism, four check valve 12, the pump barrel 4 includes the barrel body 4a, still includes the approximately circular truncated cone shape outer side end cover 4b of detachably arranged at the outer side end of barrel body 4a, the side of outer side end cover 4b is equipped with two mutually symmetrical inlet and outlet ports 4c, and the lower end of its side is equipped with the blowdown 4d, is equipped with the detachable cover 4e on the blowdown 4d, inlet and outlet port 4c are linked with corresponding check valve 12 respectively, the sludge pump still includes the barrel wall cleaning mechanism for cleaning the inner wall of barrel body 4a and is installed on outer side end cover 4b, and the barrel wall cleaning mechanism includes two cleaning execution ends that are arranged respectively in the inside of corresponding outer side end cover 4b, and still includes at least one cleaning drive end that is detachably installed on outer side end cover 4b and is transmissionally connected with corresponding cleaning execution end, the cleaning execution end includes the main shaft 30 installed on the axis of outer side end cover 4b, still includes the scraper seat 31 of setting in the inside end of main shaft 30, still includes the limiting protrusion 32 of setting in the middle part of main shaft 30, still includes the locking nut 33 of setting in the outside end of main shaft 30, the inside of main shaft 30 is equipped with flush channel 34, and the inside end of main shaft 30 is equipped with a plurality of flush nozzles 35 that are linked with flush channel 34, the scraper seat 31 is equipped with two scraper arms 31a that are mutually symmetrical, and the scraper arm 31a is equipped with scraper 31b, the inside of outer side end cover 4b is equipped with limiting sleeve 36, and the inside end of limiting sleeve 36 is equipped with limiting groove 36a for cooperating with scraper arm 31a, the cleaning drive end includes the nut seat 37 that is detachably installed on outer side end cover 4b, still includes the lead screw 38 that is threadedly cooperated with nut seat 37, the inside of nut seat 37 is equipped with locking nut seat 37a, the tail of lead screw 38 is equipped with hand wheel 38a and swivel joint 39, and its inside is also equipped with flush channel 34, and the lead screw 38 is equipped with the butt joint mechanism for being fixedly connected with main shaft 30 between,

[0027] Need to explain, the check valve 12 is also linked with feed pipe 5 or discharge pipe 6 respectively, the reversing mechanism includes slide bar seat 7, slide bar 8, induction block 9, sensor fixed frame 10, sensor 11, and the specific structure and working principle can refer to the patent of authorized announcement No.

[0028] The abovementioned docking mechanism comprises a docking protrusion 40 provided at the end of the screw rod 38, wherein a locking groove 40a is arranged in the middle; a docking groove 41 provided at the end of the main shaft 30, wherein a sealing washer 41a is arranged at the bottom, the docking protrusion 40 is detachably inserted into the docking groove 41 and connected with the spline; a number of counterbores 42 are symmetrically arranged at the outer periphery of the docking groove 41 and correspond to the locking groove 40a; a locking screw 42a is arranged in the counterbores 42.

[0029] It should be noted that when the docking mechanism is docked, the docking protrusion 40 at the end of the screw rod 38 is directly inserted into the docking groove 41 at the end of the main shaft 30; finally, the locking screws 42a are screwed in turn until they cooperate with the locking grooves 40a.

[0030] When the cleaning execution end is retracted and idle, the limiting protrusion 32 abuts against the outer end cover 4b; the scraper seat 31 is retracted into the end of the limiting sleeve 36, and the scraper arm 31a cooperates with the corresponding limiting groove 36a; at this time, the limiting protrusion 32, the main shaft 30 and the mating surface of the outer end cover 4b are all provided with a sealing ring one 22.

[0031] The abovementioned one-way valve 12 comprises a valve body 13, an outer side of the valve body 13 is provided with a discharge port 13a; a valve cover 14, the valve cover 14 is detachably arranged at the top of the valve body 13; a valve core, the valve core is located inside the valve body 13 and is slidably installed on the valve cover 14; a buffer sleeve sliding seat 19, the buffer sleeve sliding seat 19 is arranged inside the valve body 13 and is provided with a buffer sleeve 20 which is slidably connected thereto; a sliding sealing assembly is arranged between the buffer sleeve sliding seat 19 and the buffer sleeve 20; a feed port 25, the feed port 25 is detachably arranged at the lower end of the valve body 13 and is provided with a buffer sleeve buffer spring 25a inside.

[0032] It should be noted that when the one-way valve is in one-way flow, sewage flows into the feed port 25, pushes open the valve core body 16, enters the valve body 13, and then flows out from the discharge port 13a. When the one-way valve is in one-way stop, sewage flows into the discharge port 13a, enters the valve body 13, and then hits the buffer sleeve 20 with the valve core body 16, the buffer sleeve 20 moves downward along the buffer sleeve sliding seat 19, converts the impact potential energy between them into the elastic potential energy of the buffer sleeve buffer spring 25a, and then moderates the impact between the bottom of the valve body 13 and the valve core body 16. A number of screw fixing seats 28 are arranged inside the valve body 13, the valve cover 14 and the feed port 25 are connected and fixed by the cooperation of the fixing screws 29 and the screw fixing seats 28.

[0033] The sliding sealing assembly comprises, from bottom to top, a dustproof ring one 21, a sealing ring two 22a, a stellite seal 23, a support ring 24, a sealing ring three 22b and a dustproof ring two 21a.

[0034] The one-way valve 12 further comprises a buffer sleeve lubricating mechanism, which comprises a lubricating channel 26 arranged on the valve body 13 and communicating with the inside of the buffer sleeve sliding seat 19; the upper and lower sides of the support ring 24 are provided with annular lubricating channels 27; the inner side end of the lubricating channel 26 is opposite to the support ring 24 and communicates with the annular lubricating channel 27; the outer side end of the lubricating channel 26 is provided with a sealing screw 26a;

[0035] It should be noted that during lubrication, the sealing screw 26a is opened, and lubricating oil is injected into the lubricating channel 26; the lubricating oil flows into the annular lubricating channel 27 through the lubricating channel 26 and contacts the outer periphery of the buffer sleeve 20; then, as the buffer sleeve 20 moves up and down, the lubricating oil fully contacts the sealing assembly, thereby playing a lubricating role.

[0036] The valve core comprises a valve core seat 15, which is detachably inserted on the valve cover 14; the outer side end of the valve core seat 15 is provided with a valve core seat fixing nut 15a; a valve core body 16, which is slidably installed on the valve core seat 15; a spring seat 17, which is arranged inside the valve cover 14; a valve core buffer spring 18, which is sleeved on the valve core body 16, with the upper end abutting against the spring seat 17 and the lower end abutting against the valve core body 16.

[0037] When the high-pressure sludge pump is working,

[0038] The high-pressure oil provided by the hydraulic station enters the hydraulic cylinder 3, and the hydraulic piston in the hydraulic cylinder 3 drives the piston rod to reciprocate, thereby driving the pump barrel pistons at both ends of the piston rod to reciprocate in the respective pump barrels 4; when the pump barrel piston in one pump barrel 4 moves towards the hydraulic cylinder 3, the sewage in the feeding pipe 5 is sucked into the pump barrel 4 through the corresponding one-way valve 12 and the inlet and outlet port 4c; at the same time, the pump barrel piston in the other pump barrel 4 gradually moves away from the hydraulic cylinder 3, and the sewage in it is discharged into the discharge pipe 6 under the pushing of the pump barrel piston through the corresponding inlet and outlet port 4c and one-way valve 12.

[0039] When the barrel wall cleaning mechanism is used,

[0040] Firstly, the sludge in the pump barrel 4 is emptied, that is, the feeding pipe 5 is closed to stop the delivery of sludge, and at the same time the sludge pump continues to work for a period of time to discharge as much sludge as possible in the pump barrel 4;

[0041] Then, the pump barrel 4 is adjusted, that is, the pump barrel 4 whose barrel wall needs to be cleaned is selected, and the pump barrel piston in the pump barrel 4 is controlled by the hydraulic cylinder 3 to move towards the hydraulic cylinder 3 until it reaches the bottom of the pump barrel 4, and then the sludge pump is closed;

[0042] Afterwards, the cleaning driving end is installed, that is, the locking nut 33 is loosened to a proper position; then the main shaft 30 is pushed inward so that the scraper arm 31a is disengaged from the limiting groove 36a; then the end of the screw rod 38 is inserted into the end of the main shaft 30 for butt joint; then the nut seat 37 is properly rotated so that the connecting section of the nut seat 37 is aligned with the mounting hole on the outer end cover 4b and is fixed by screw connection, during which the position of the locking nut 33 can be properly adjusted to ensure that the connecting section of the nut seat 37 can abut against the outer end cover 4b; finally, the locking nut 33 is removed from the main shaft 30 and is screwed into the locking nut seat 37a;

[0043] Finally, the barrel wall is cleaned, that is, the sewage outlet 4d is opened, the rotating joint 39 is connected to the washing water source, and then the hand wheel 38a is rotated; with the rotation of the hand wheel 38a, the screw rod 38 rotates with the scraper seat 31 through the main shaft 30 and continuously extends into the pump barrel 4; during this period, the scraper 31b on the scraper arm 31a continuously scrapes the residual sludge on the inner wall of the pump barrel 4, and the washing nozzle 35 also continuously sprays washing water to wash the inner wall of the pump barrel 4, and the cleaned sludge is discharged from the sewage outlet 4d with the water flow; in order to obtain better cleaning effect, the scraper seat 31 can be reciprocatingly moved through the hand wheel 38a, so as to clean the inner wall of the pump barrel 4 back and forth for several times to achieve better cleaning effect;

[0044] It should be noted that the cleaning driving end of the barrel wall cleaning mechanism is designed to be detachable, which can save the occupied space of the sludge pump, thereby facilitating transportation and handling; the inner diameter of the above-mentioned locking nut seat 37a is larger than the outer diameter of the screw rod 38, so that the movement of the screw rod 38 is not affected;

[0045] It should be further noted that when the cleaning driving end is disassembled, the screw rod 38 is first retracted by rotating the hand wheel 38a until the scraper arm 31a abuts against the end of the limiting sleeve 36; then the locking nut 33 is removed from the locking nut seat 37a and is installed on the main shaft 30; then the nut seat 37 is disassembled, and the screw rod 38 and the main shaft 30 are butt-jointed and disassembled; finally, the position of the main shaft 30 is continuously adjusted, and the main shaft 30 is pulled outward until the scraper arm 31a is reinserted into the limiting groove 36a, and the locking nut 33 is tightened to complete the locking of the cleaning driving end;

[0046] In order to facilitate the scraper arm 31a to be quickly inserted into the limiting groove 36a, a mark line can be drawn on the outer side of the main shaft 30, and the angle position of the mark line is synchronous with the angle position of the scraper arm 31a, and the limiting groove 36a on the limiting sleeve 36 is vertically arranged, so that the operator can quickly adjust the scraper arm 31a to a vertical state through the mark line, and then the scraper arm 31a can be quickly matched with the limiting groove 36a in the vertical state.

[0047] The present application is not limited to the above-mentioned embodiments, and on the basis of the technical solutions disclosed in the present application, those skilled in the art can make some substitutions and modifications to some technical features without creative labor according to the disclosed technical content, and these substitutions and modifications are all within the protection scope of the present application.

Claims

1. A horizontal high-pressure sludge pump, comprising a hydraulic station and a pump body, wherein the pump body comprises a base (1), a support frame (2), a hydraulic cylinder (3), two pump barrels (4), a piston rod, a feed pipe (5), a discharge pipe (6), a reversing mechanism, and four one-way valves (12); characterized in that: The pump barrel (4) includes a barrel body (4a), and also includes an outer end cover (4b) detachably arranged at the outer end of the barrel body (4a) and having an approximately truncated cone shape; the side of the outer end cover (4b) is provided with two mutually symmetrical inlet and outlet ports (4c), and the lower end of the side is provided with a sewage outlet (4d); the sewage outlet (4d) is provided with a detachable cover (4e); the inlet and outlet ports (4c) are respectively connected to corresponding one-way valves (12); The sludge pump further comprises a barrel wall cleaning mechanism mounted on the outer end cover (4b) and used for cleaning the inner wall of the barrel body (4a), the barrel wall cleaning mechanism comprising two cleaning execution ends respectively arranged inside corresponding outer end covers (4b), and at least one cleaning driving end detachably mounted on the outer end cover (4b) and drivingly connected to the corresponding cleaning execution end; The cleaning execution end includes a main shaft (30) mounted on the central axis of the outer end cover (4b), a scraper seat (31) arranged at the inner end of the main shaft (30), a limiting protrusion (32) arranged in the middle of the main shaft (30), and a locking nut (33) arranged at the outer end of the main shaft (30); a flushing channel (34) is provided inside the main shaft (30), and a plurality of flushing nozzles (35) connected to the flushing channel (34) are provided at the inner end of the main shaft (30); two scraper arms (31a) symmetrical to each other are provided on the scraper seat (31), and a scraper (31b) is provided on the scraper arm (31a); a limiting sleeve (36) is provided on the inner side of the outer end cover (4b), and a limiting groove (36a) for cooperating with the scraper arm (31a) is provided at the inner end of the limiting sleeve (36); The cleaning drive end comprises a nut seat (37) detachably mounted on an outer end cover (4b), and a screw rod (38) threadedly engaged with the nut seat (37); a locking nut seat (37a) is provided on the inner side of the nut seat (37); a hand wheel (38a) and a rotary joint (39) are provided at the tail end of the screw rod (38), and a flushing channel (34) is also provided inside the screw rod (38); and a docking mechanism for mutually connecting and fixing the screw rod (38) and the main shaft (30) is provided between the screw rod (38).

2. A horizontal high-pressure sludge pump according to claim 1, characterized in that: The docking mechanism includes A docking protrusion (40), the docking protrusion (40) being arranged at the end of the screw rod (38), and having a locking groove (40a) provided in the middle thereof; A docking groove (41), the docking groove (41) is provided at the end of the main shaft (30), a sealing gasket (41a) is provided at the bottom thereof, and the docking protrusion (40) is detachably inserted into the docking groove (41) and spline-connected thereto; There are a plurality of countersunk holes (42), which are respectively and centrally symmetrically arranged on the periphery of the docking groove (41) and whose positions correspond to the locking groove (40a); a locking screw (42a) is provided in each of the countersunk holes (42).

3. The horizontal high-pressure sludge pump according to claim 2, characterized in that: When the cleaning execution end is retracted and idle, the limiting protrusion (32) abuts against the outer end cover (4b); the scraper seat (31) retracts to the end of the limiting sleeve (36), and the scraper arm (31a) cooperates with the corresponding limiting groove (36a); at this time, a sealing ring (22) is provided on the matching surfaces of the limiting protrusion (32), the main shaft (30) and the outer end cover (4b).

4. A horizontal high-pressure sludge pump according to any one of claims 1 to 3, characterized in that: The one-way valve (12) includes A valve body (13), wherein a discharge port (13a) is provided on the outer side of the valve body (13); a valve cover (14), the valve cover (14) being detachably arranged on the top of the valve body (13); A valve core, the valve core being located inside the valve body (13) and being mounted on the valve cover (14) in a manner that allows it to slide up and down; A buffer sleeve slide (19), the buffer sleeve slide (19) being arranged at the bottom inside the valve body (13), and having a buffer sleeve (20) provided thereon for sliding engagement therewith; a sliding sealing assembly being provided between the buffer sleeve slide (19) and the buffer sleeve (20); A feed inlet (25) is detachably provided at the lower end of the valve body (13), and a buffer sleeve and a buffer spring (25a) are provided on the inner side of the feed inlet (25).

5. A horizontal high-pressure sludge pump according to claim 4, characterized in that: The sliding seal assembly comprises, from bottom to top, a dust ring 1 (21), a sealing ring 2 (22a), a step seal (23), a support ring (24), a sealing ring 3 (22b), and a dust ring 2 (21a).

6. A horizontal high-pressure sludge pump according to claim 5, characterized in that: The one-way valve (12) further includes a buffer sleeve lubrication mechanism, wherein the buffer sleeve lubrication mechanism includes a lubrication channel (26) provided on the valve body (13) and communicating with the interior of the buffer sleeve slide seat (19); Annular lubrication channels (27) are provided on the upper and lower sides of the support ring (24); the inner end of the lubrication channel (26) faces the support ring (24) and is connected to the annular lubrication channel (27); and a sealing screw (26a) is provided on the outer end of the lubrication channel (26).

7. A horizontal high-pressure sludge pump according to claim 4, characterized in that: The valve core includes A valve core seat (15), the valve core seat (15) is detachably inserted into the valve cover (14), and a valve core seat fixing nut (15a) is provided at the outer end of the valve core seat (15); A valve core body (16), wherein the valve core body (16) is mounted on the valve core seat (15) in a manner that allows it to slide up and down; a spring seat (17), the spring seat (17) being arranged on the inner side of the valve cover (14); A valve core buffer spring (18) is sleeved on the valve core body (16), with its upper end abutting against the spring seat (17) and its lower end abutting against the valve core body (16).

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