Sealing device for hydraulic slurry pump

Abstract

The utility model discloses a sealing device for a hydraulic slurry pump, and belongs to the technical field of hydraulic slurry pumps. The sealing device comprises a pump body, a discharging pipe is arranged on the outer side of the pump body, an annular sealing piece is arranged between the discharging pipe and the pump body, an annular framework is arranged in the annular sealing piece, inclined rings are symmetrically arranged on the peripheries of the two sides of the annular framework, and threads are arranged on the outer walls of the inclined rings. According to the utility model, the sealing reinforcing treatment of the connecting area of the discharge valve port and the discharge pipe can be realized, the deformation and abnormal use of the pipe body caused by the connected pipe fitting of the discharge pipe under the slurry medium conveying pressure can be effectively prevented, and the deformation or defect of the pipe body caused by the contact between the discharge pipe and an external object during the use of the hydraulic slurry pump can be avoided; and impact and abrasion of hard dopants on the inner wall of the bent part of the discharging pipe can be prevented, and a certain gap is formed between the wear-resisting base plate and the outer arc sleeve, so that buffering and force unloading of a slurry medium conveyed at high pressure are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic mud pumps, in particular to a sealing device for a hydraulic mud pump. Background Art

[0002] Hydraulic mud pump is a fluid machinery, whose main function is to convert the mechanical energy of hydraulic motor into a machine that transports fluid and gives fluid energy. In emergency repair and engineering construction, it is widely used in flood control and drainage rescue, drought-resistant ditch pumping, pipeline emergency repair operations, coal mine leakage, fish pond drainage and other repair operations. This pump uses hydraulic pressure as a power source to ensure that the mud pump submerged in water during drainage operations can operate without electricity, thereby ensuring the safety of emergency repair and rescue personnel in the water. During operation, the hydraulic mud pump usually needs to continuously stir the mud medium close to the bottom to ensure the smooth suction and transportation of the mud medium. In combination with the above content, it should be noted that during the high-pressure extraction and transportation of the mud medium by the hydraulic mud pump, there are still some granular irregular hard inclusions in the mud medium, which accompany the mud in the mud pump under the high-pressure drive of the blades and violently enter the discharge pipe area, accompanied by continuous high-pressure transportation, which can easily cause the connection of the discharge area to be easily loosened, causing the high-pressure transported mud to leak during external transportation; at the same time, the high-pressure transported mud medium containing granular irregular hard inclusions continuously impacts the curved pipe wall of the discharge pipe, causing accelerated wear of the pipe wall; in view of the above technical defects, a solution is now proposed. Summary of the invention

[0003] The utility model aims to provide a sealing device for a hydraulic mud pump, which is used in conjunction with a discharge valve and a combined sleeve sealing structure through an annular seal, and performs a secondary screwing type synchronous locking and sealing fixation on the external area connected to the discharge pipe inside the discharge valve port. Therefore, it can not only realize the sealing reinforcement treatment of the connection area between the discharge valve port and the discharge pipe, but also utilize the combined sleeve sealing member to perform a covering type reinforcement treatment on the external bent part of the discharge pipe, effectively preventing the discharge pipe from being affected by the connected pipe fittings under the mud medium conveying pressure, causing the pipe body to be deformed and used abnormally, and avoiding the discharge pipe of the hydraulic mud pump from contacting with external objects during use, causing the pipe body to be deformed or damaged, so as to solve the problems raised.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a sealing device for a hydraulic mud pump, comprising a pump body, a discharge pipe is arranged on the outside of the pump body, an annular seal is arranged between the discharge pipe and the pump body, an annular skeleton is arranged inside the annular seal, oblique rings are symmetrically arranged on the outer periphery of both sides of the annular skeleton, and threads are arranged on the outer walls of the oblique rings; a sliding cone ring is arranged at the end of the discharge pipe away from the pump body, an outer arc sleeve is arranged at the corner of the end of the discharge pipe close to the pump body, a combined sleeve body seal is arranged on the outside of the outer arc sleeve, the combined sleeve body seal comprises an outer pipe sleeve and an inner pipe sleeve, and a deflection frame is arranged inside the outer pipe sleeve.

[0005] Preferably, a discharge valve port threadedly connected to the annular seal is provided at the middle of the outer periphery of the pump body, and a thread cooperating with the oblique ring is provided on the outer side of the inner wall of the discharge valve port.

[0006] Preferably, annular hollow frames are arranged on both sides of the annular frame, and a circular array of perforations is arranged on the periphery of the hollow frame, a metal bending sheet is arranged on the periphery of the annular frame and located between the oblique ring and the hollow frame, and a sealing gasket embedded in the perforation is arranged on the inner wall of the metal bending sheet.

[0007] Preferably, a soft colloid is provided in the middle of the outer arc sleeve, a wear-resistant pad is clamped on the inner side of the outer arc sleeve, a sealing rubber pad is provided on the outer periphery of the wear-resistant pad and is clamped between the discharge pipe and the outer arc sleeve, and a plurality of groups of guide grooves connected with the sliding cone ring are provided on the inner wall of the end of the discharge pipe away from the pump body, and a plurality of groups of guide grooves are provided with limiting strip holes close to the side of the outer arc sleeve.

[0008] Preferably, the outer peripheral fitting areas of the outer sleeve and the inner sleeve are both provided with multiple sets of fixing blocks, the outer wall corners of the outer sleeve are provided with reinforcing sleeves, and the outer wall of the outer sleeve is provided with a conduit extending toward the sliding cone ring.

[0009] Preferably, the deflection frame is hinged inside the reinforcement sleeve, a support plate is provided on the inner wall of one end of the deflection frame facing the sliding cone ring, and a traction rope penetrating the conduit and connected to the sliding cone ring is provided on the outer wall of the deflection frame close to the support plate.

[0010] The beneficial effects of the utility model are as follows: the utility model uses an annular seal to assist the discharging valve and the combined sleeve seal structure in linkage use, and performs secondary screw-type synchronous locking and sealing fixation on the external area connected to the discharging valve port and the discharging pipe, thereby achieving the sealing reinforcement treatment of the connection area between the discharging valve port and the discharging pipe, and utilizing the combined sleeve seal to perform a covering reinforcement treatment on the external curved part of the discharging pipe, effectively preventing the discharging pipe from being deformed and abnormally used due to the connected pipe fittings under the mud medium conveying pressure, and avoiding the hydraulic mud pump from discharging during use. The contact between the pipe and external objects causes the pipe body to be deformed or damaged. The utility model uses a combined sleeve seal to cooperate with the discharge pipe, and utilizes a wear-resistant pad to clamp the upper limit on the inner wall of the outer arc sleeve, so as to prevent the inner wall of the curved part of the discharge pipe from being impacted and worn by hard impurities. The conveying power of the high-pressure mud medium can also push the sliding cone ring to move outside the discharge pipe within the limit range, and then drag the deflection frame to rotate within a certain angle and squeeze on the soft colloid and the wear-resistant pad, so as to form a certain gap between the wear-resistant pad and the outer arc sleeve, so as to achieve buffering and unloading of the high-pressure conveyed mud medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings;

[0012] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the discharge valve port of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the annular seal of the utility model;

[0015] Figure 4 This is a schematic diagram of the connection structure between the discharge pipe and the combined sleeve seal of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the discharge pipe of the utility model;

[0017] Figure 6 It is a structural schematic diagram of the outer tube sleeve of the utility model;

[0018] Figure 7 It is a schematic diagram of the cross-sectional structure of the outer pipe sleeve of the utility model.

[0019] Legend: 1. Pump body; 101. Discharge valve port; 2. Annular seal; 201. Annular frame; 202. Sealing gasket; 203. Metal bending sheet; 204. Oblique ring; 3. Discharge pipe; 301. Sliding cone ring; 302. Outer arc sleeve; 303. Soft colloid; 304. Wear-resistant pad; 305. Sealing rubber pad; 4. Combined sleeve seal; 401. Outer sleeve; 402. Inner sleeve; 403. Reinforcement sleeve; 404. Fixing block; 405. Conduit; 406. Traction rope; 407. Deflection frame; 408. Support. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] This embodiment is used to solve the problem that during the high-pressure extraction and transportation of the mud medium by the hydraulic mud pump, some granular irregular hard impurities still exist in the mud medium, which accompany the mud inside the mud pump under the high-pressure drive of the blades and violently enter the discharge pipe area, accompanied by continuous high-pressure transportation, which can easily cause the connection of the discharge area to be easily loosened, causing the high-pressure transported mud to leak during external transportation.

[0023] See also Figure 1 - Figure 3 As shown, this embodiment is a sealing device for a hydraulic mud pump, comprising a pump body 1, a discharge pipe 3 is arranged outside the pump body 1, an annular seal 2 is arranged between the discharge pipe 3 and the pump body 1, an annular frame 201 is arranged inside the annular seal 2, oblique rings 204 are symmetrically arranged on the outer periphery of both sides of the annular frame 201, and threads are arranged on the outer wall of the oblique ring 204;

[0024] A discharge valve port 101 threadedly connected to the annular seal 2 is provided at the middle of the outer periphery of the pump body 1, and a thread connected to the oblique ring 204 is provided on the outer side of the inner wall of the discharge valve port 101. Before the hydraulic mud pump extracts and transports the mud containing granular irregular hard inclusions under high pressure, the discharge pipe 3 is inserted into the inner side of the inner wall of the discharge valve port 101 for rotational thread connection. The outer pipe sleeve 401 and the inner pipe sleeve 402 are respectively attached to the outer wall and the inner wall of the corner of the discharge pipe 3, so that the multiple groups of fixing blocks 404 are close to each other, and the bolts are used to limit and initially fix them;

[0025] An annular hollow skeleton is arranged on both sides of the annular skeleton 201, and a circular array is arranged on the outer periphery of the hollow skeleton. A metal bending sheet 203 is arranged on the outer periphery of the annular skeleton 201 between the oblique ring 204 and the hollow skeleton. A sealing gasket 202 embedded in the perforation is arranged on the inner wall of the metal bending sheet 203. An external tool is used to rotate the annular seal 2 which is sleeved on the outer periphery of the discharge pipe 3 and is located between the discharge valve port 101 and the outer tube sleeve 401. The annular seal 2 is rotated under force, and the oblique ring 204 is driven to rotate synchronously through the annular skeleton 201. The oblique ring 204 and the inner wall of the discharge valve port 101 are connected to each other. The outer wall thread and the outer tube sleeve 401 are rotationally connected with the outer wall thread of the inner tube sleeve 402, and the outer force of the inclined ring 204 squeezes the metal bending sheet 203 inward, and the metal bending sheet 203 pushes the sealing gasket 202. At the same time, the annular seal 2 drags one end of the combination of the outer tube sleeve 401 and the inner tube sleeve 402 toward the discharge valve port 101, and then further tightens the bolts on the fixing block 404, so that the combined sleeve seal forms an integrated splicing structure with the discharge valve port 101 through the annular seal 2, thereby realizing the protection of the reinforced sleeve 403 on the outside of the connection between the discharge pipe 3 and the discharge valve port 101.

[0026] Example 2

[0027] This embodiment is used to solve the problem that during the high-pressure extraction and transportation of the mud medium by the hydraulic mud pump, the mud medium containing granular irregular hard inclusions transported under high pressure continuously impacts the curved pipe wall of the discharge pipe, causing accelerated wear of the pipe wall.

[0028] See also Figure 1 , Figure 4 - Figure 7As shown, a sealing device for a hydraulic mud pump in this embodiment includes a sliding cone ring 301 provided at one end of a discharge pipe 3 away from a pump body 1, an outer arc sleeve 302 is provided at a corner of one end of the discharge pipe 3 close to the pump body 1, a combined sleeve body seal 4 is provided on the outer side of the outer arc sleeve 302, and the combined sleeve body seal 4 includes an outer pipe sleeve 401 and an inner pipe sleeve 402, and a deflection frame 407 is provided inside the outer pipe sleeve 401; a soft colloid 303 is provided in the middle of the outer arc sleeve 302, a wear-resistant pad 304 is provided on the inner side of the outer arc sleeve 302, and a wear-resistant pad 304 is provided on the outer periphery of the wear-resistant pad 304, which is inserted into the discharge pipe The sealing rubber pad 305 between 3 and the outer arc sleeve 302, the wear-resistant pad 304 is designed in a semicircular arc shape, and the inner wall of the end of the discharge pipe 3 away from the pump body 1 is provided with multiple groups of guide grooves sleeved with the sliding cone ring 301, and the multiple groups of guide grooves are provided with limited position strip holes near the outer arc sleeve 302. When the mud medium is transported into the discharge pipe 3, the mud medium contacts the wear-resistant pad 304, so that the wear-resistant pad 304 is closely attached to the soft colloid 303, and the sealing rubber pad around the outer wall of the wear-resistant pad 304 is compacted and sealed between the corner of the discharge pipe 3 and the outer arc sleeve 302, and the soft colloid 303 is combined to form The outer sleeve 401 and the inner sleeve 402 are both provided with a plurality of fixed blocks 404 in the peripheral fitting area, a reinforcing sleeve 403 is provided at the corner of the outer wall of the outer sleeve 401, and a conduit 405 extending toward the sliding cone ring 301 is provided on the outer wall of the outer sleeve 401; a deflection frame 407 is hinged inside the reinforcing sleeve 403, a support sheet 408 is provided on the inner wall of the end of the deflection frame 407 facing the sliding cone ring 301, and a support sheet 408 is provided on the outer wall of the deflection frame 407 close to the support sheet 408 There is a traction rope 406 that penetrates the conduit 405 and is connected to the sliding cone ring 301. When the mud medium is transported to the sliding cone ring 301 area along the discharge pipe 3, the sliding cone ring 301 is pushed outward along the guide groove by the mud medium due to the decreasing aperture of the inner wall of the sliding cone ring 301 from the inside to the outside. During the movement of the sliding cone ring 301, the deflection frame 407 is rotated by the traction rope 406. The deflection frame 407 pushes the wear-resistant pad 304 in contact with the soft colloid 303 through the support plate 408 to deflect inward. Affected by the toughness of the traction rope 406, the wear-resistant pad 304 is unloaded in the micro-distance reciprocating movement.

[0029] In combination with Example 1 and Example 2, it is possible to achieve a sealing reinforcement treatment for the connection area between the discharge valve port 101 and the discharge pipe 3, and use the combined sleeve seal to perform a wrap-type reinforcement treatment on the external curved portion of the discharge pipe 3, thereby effectively preventing the discharge pipe 3 from being connected to the pipe fittings under the mud medium conveying pressure, causing the pipe body to deform and use abnormally, and avoiding the discharge pipe 3 from contacting external objects during the use of the hydraulic mud pump, causing the pipe body to deform or be damaged, and can also achieve the impact and wear protection of the inner wall of the curved portion of the discharge pipe 3 from hard impurities. The conveying power of the high-pressure mud medium pushes the sliding cone ring 301 to move outside the discharge pipe 3 within the limit range, and then drags the deflection frame 407 to rotate and squeeze on the soft colloid 303 and the wear-resistant pad 304 within a certain angle, so as to form a certain gap between the wear-resistant pad 304 and the outer arc sleeve 302, so as to achieve buffering and unloading of the high-pressure conveyed mud medium.

[0030] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing device for a hydraulic mud pump, comprising a pump body (1), characterized in that: A discharge pipe (3) is arranged outside the pump body (1), an annular seal (2) is arranged between the discharge pipe (3) and the pump body (1), an annular frame (201) is arranged inside the annular seal (2), oblique rings (204) are symmetrically arranged on the outer periphery of both sides of the annular frame (201), and threads are arranged on the outer walls of the oblique rings (204); a sliding cone ring (301) is arranged at one end of the discharge pipe (3) away from the pump body (1), an outer arc sleeve (302) is arranged at the corner of one end of the discharge pipe (3) close to the pump body (1), a combined sleeve body seal (4) is arranged outside the outer arc sleeve (302), the combined sleeve body seal (4) comprises an outer pipe sleeve (401) and an inner pipe sleeve (402), and a deflection frame (407) is arranged inside the outer pipe sleeve (401).

2. A sealing device for a hydraulic mud pump according to claim 1, characterized in that: A discharge valve port (101) threadedly connected to the annular seal (2) is provided at the middle of the outer periphery of the pump body (1), and a thread connected and matched to the oblique ring (204) is provided on the outer side of the inner wall of the discharge valve port (101).

3. A sealing device for a hydraulic mud pump according to claim 1, characterized in that: Annular hollow frames are arranged on both sides of the annular frame (201), and the outer periphery of the hollow frames is provided with an annular array of perforations, the outer periphery of the annular frame (201) is provided with a metal bending sheet (203) located between the oblique ring (204) and the hollow frame, and the inner wall of the metal bending sheet (203) is provided with a sealing gasket (202) embedded in the perforations.

4. A sealing device for a hydraulic mud pump according to claim 1, characterized in that: A soft colloid (303) is arranged in the middle of the outer arc sleeve (302), a wear-resistant pad (304) is clamped on the inner side of the outer arc sleeve (302), a sealing rubber pad (305) is arranged on the outer periphery of the wear-resistant pad (304) and is clamped between the discharge pipe (3) and the outer arc sleeve (302), and a plurality of guide grooves that are sleeved with the sliding cone ring (301) are arranged on the inner wall of one end of the discharge pipe (3) away from the pump body (1), and limit strip holes are arranged on the side of the plurality of guide grooves close to the outer arc sleeve (302).

5. A sealing device for a hydraulic mud pump according to claim 1, characterized in that: Multiple groups of fixing blocks (404) are provided at the peripheral fitting areas of the outer tube sleeve (401) and the inner tube sleeve (402), a reinforcing sleeve (403) is provided at the corner of the outer wall of the outer tube sleeve (401), and a guide tube (405) extending toward the sliding cone ring (301) is provided on the outer wall of the outer tube sleeve (401).

6. A sealing device for a hydraulic mud pump according to claim 5, characterized in that: The deflection frame (407) is hinged inside the reinforcement sleeve (403), a support plate (408) is provided on the inner wall of one end of the deflection frame (407) facing the sliding cone ring (301), and a traction rope (406) penetrating the conduit (405) and connected to the sliding cone ring (301) is provided on the outer wall of the deflection frame (407) close to the support plate (408).

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