CN214886940U - Valve seat extractor of slurry pump - Google Patents

Abstract

The utility model provides a valve seat extractor of a slurry pump, which comprises a supporting seat, wherein a hydraulic cylinder is connected above the supporting seat, and the hydraulic cylinder is connected with a hydraulic power source for driving the hydraulic cylinder to act; a piston rod of the hydraulic cylinder freely penetrates through the supporting seat and extends to the lower part of the supporting seat; the bottom of the piston rod is connected with a central rod, the bottom of the central rod is detachably connected with a drawing head, the drawing head comprises a clamping seat, the clamping seat is provided with a containing cavity, the containing cavity is connected with symmetrically arranged pin shafts, each pin shaft is respectively and relatively rotatably connected with a clamping block for clamping the end face of a valve seat, and the outer side surface of each clamping block is obliquely arranged; the accommodating cavity is connected with a partition plate, an elastic piece with elasticity is further arranged between the clamping block and the partition plate, the elastic piece is V-shaped and provided with two ends, one end is connected with the partition plate, and the other end is in contact connection with the side wall of the clamping block. The utility model discloses simple structure, convenient to use can save a large amount of manpowers and time, the effectual work efficiency that has improved has reduced cost of maintenance.

Description

Valve seat extractor of slurry pump

Technical Field

The utility model belongs to the technical field of oil drilling engineering, concretely relates to slush pump valve seat extractor.

Background

At present, in the petroleum drilling operation, the excircle of a valve seat commonly used by a drilling mud pump is of a conical structure, and the valve seat plays a role in sealing in a valve box. Because the valve seat is repeatedly subjected to high-pressure flushing and chemical action of slurry, a gap is easily formed and punctured at the sealing part between the valve seat and the cylinder body of the valve box, so that the pressure of the slurry pump is reduced, and the valve seat belongs to a quick-wear part and needs frequent maintenance and replacement. However, the valve seat is very difficult to remove because no special tool is provided. Maintenance workers often use metal appliances such as hammers and steel pipes to knock the valve seat and eject the valve seat out.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the valve seat extractor of the slurry pump is provided.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a valve seat extractor of a slurry pump, which comprises a supporting seat, wherein a hydraulic cylinder is connected above the supporting seat, and the hydraulic cylinder is connected with a hydraulic power source for driving the hydraulic cylinder to act; a piston rod of the hydraulic cylinder freely penetrates through the supporting seat and extends to the position below the supporting seat; the bottom of the piston rod is connected with a central rod, the bottom of the central rod is detachably connected with a drawing head, the drawing head comprises a clamping seat, the clamping seat is provided with a containing cavity, the containing cavity is connected with symmetrically arranged hinge pins, each hinge pin is respectively and relatively rotatably connected with a clamping block for clamping the end face of a valve seat, and the outer side surface of each clamping block is obliquely arranged; the clamping block is characterized in that a partition plate is connected in the accommodating cavity, an elastic piece with elasticity is further arranged between the clamping block and the partition plate, the elastic piece is V-shaped and provided with two ends, one end is connected with the partition plate, and the other end is in contact connection with the side wall of the clamping block.

The hydraulic power source is a manual hydraulic pump.

The clamping block is in a kitchen knife shape and comprises a knife handle part and a main body part connected with the knife handle part, and a clamping groove is formed in the joint of the main body part and the knife handle part.

The clamping table is arranged in the accommodating cavity, the clamping table is connected with the clamping seat, and the clamping table is matched and clamped with the clamping groove.

One end of the elastic sheet is connected with a sliding column, and the sliding column is in contact connection with the side wall of the clamping block.

The top of the clamping block is provided with a threaded hole, and the bottom end of the center rod is in threaded connection with the threaded hole.

The bottom of the supporting seat is connected with a positioning check ring.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model has simple structure and convenient use, can save a large amount of manpower and time, effectively improves the working efficiency and reduces the maintenance cost; when using, will draw the head and insert along the inside hole of valve seat, at the insertion-in process, the shell fragment is extruded, and the fixture block is inwards shrink, like this, when the fixture block worn out the valve seat, under shell fragment elastic action, the fixture block stretched out and holds the chamber, and the top joint of fixture block is at valve seat terminal surface, then starts the pneumatic cylinder, and the pneumatic cylinder drives and draws the head and remove, can take out the valve seat fast.

2. The drawing head adopts the structural style of fixture block and V type shell fragment, utilizes the elasticity of shell fragment to realize the free rotation of fixture block, and then realizes that the automation of fixture block is accomodate and is stretched out, need not manual adjustment, and the convenience of operation has been improved to self-adaptation.

3. The utility model discloses a one set of product possesses not unidimensional pull-head, can select according to actual need, and the connection mode can be dismantled with well core rod adoption to the pull-head, and wherein can dismantle the connection mode and be threaded connection or peg graft, like this, can conveniently carry out the quick replacement of pull-head.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the drawing head of fig. 1.

Fig. 3 is an enlarged schematic view of the structure of the latch.

FIG. 4 is a schematic view of the fitting structure of the valve seat and the cylinder liner.

Fig. 5 is a side view of the handle.

Fig. 6 is a schematic view of another structure of the drawing head.

Fig. 7 is a schematic view of the drawing head fixture block in fig. 1.

Description of reference numerals:

1, supporting a seat; 2, a hydraulic cylinder; 3, a handle; 4, positioning a retainer ring; 5 a piston rod; 6, a central rod; 61 a second hole; 7, a card seat; 71 jack; 72 a receiving cavity; 73, clamping a platform; 74 a connecting plate; 741 a first aperture; 8, clamping blocks; 81 a main body part; 82 a shank portion; 83 rotating the hole; 84 card slots; 9, a pin shaft; 10 spring pieces; 11 a sliding post; 12 cylinder openings; 13 valve seat.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Example one

As shown in fig. 1 to 7, the extractor for the valve seat 13 of the slurry pump provided by the embodiment comprises a supporting seat 1, wherein a hydraulic cylinder 2 is connected above the supporting seat 1, the supporting seat 1 plays a supporting role, and the supporting seat 1 is supported at the end face of a cylinder opening 12 of a cylinder sleeve in a cushioning manner; pneumatic cylinder 2 is connected with the hydraulic power source of the 2 actions of drive pneumatic cylinder, and manual hydraulic pump, portable can be chooseed for use to the hydraulic power source. A piston rod 5 of the hydraulic cylinder 2 freely penetrates through the supporting seat 1 and extends to the lower part of the supporting seat 1; the bottom of the piston rod 5 is connected with a central rod 6, and the piston rod 5 and the central rod 6 can be in threaded connection, welding or clamping connection; the bottom of the central rod 6 is detachably connected with a drawing head, the drawing head comprises a clamping seat 7, the clamping seat 7 is provided with an accommodating cavity 72, the accommodating cavity 72 is connected with pin shafts 9 which are symmetrically arranged, each pin shaft 9 is relatively and rotatably connected with a clamping block 8 for clamping the end face of the valve seat 13, the clamping block 8 is provided with a rotating hole 83, the pin shafts 9 are inserted in the rotating holes 83, and the clamping block 8 can freely rotate around the pin shafts 9; the outer side surface of the fixture block 8 is obliquely arranged, so that the fixture block 8 can be conveniently accommodated and extended into the valve seat 13; the accommodating cavity 72 is connected with a partition plate, and the partition plate and the clamping seat 7 are integrally formed; an elastic spring sheet 10 with elasticity is further arranged between the clamping block 8 and the partition plate, the spring sheet 10 is V-shaped, the spring sheet 10 is provided with two ends, one end is connected with the partition plate, and the other end is in contact connection with the side wall of the clamping block 8 to play a role of jacking.

In this embodiment, the top of the latch 8 is opened with an insertion hole 71, the insertion hole 71 is a threaded hole, and the bottom end of the center rod 6 is screwed into the threaded hole.

The fixture block 8 is in a kitchen knife shape, the fixture block 8 comprises a handle portion 82 and a main body portion 81 connected with the handle portion 82, and a clamping groove 84 is formed at the connection position of the main body portion 81 and the handle portion 82. A clamping table 73 is arranged in the accommodating cavity 72, the clamping table 73 is connected with the clamping base 7, and the clamping table 73 and the clamping base 7 can be integrally processed and manufactured; the locking platform 73 is matched and locked with the locking groove 84. The clamping table 73 plays a supporting role, an acting point is provided for the clamping block 8, when the clamping block 8 is clamped at the clamping table 73, the top end of the clamping block 8 is in a horizontal state, and the clamping block 8 extends out of the accommodating cavity 72 to form a probe-shaped structure, so that the clamping block 8 can be supported at the end face of the valve seat 13.

One end of the elastic sheet 10 is connected with a sliding column 11, and the sliding column 11 is in contact connection with the side wall of the clamping block 8. The sliding block can play the effect of increase area of contact, also makes things convenient for simultaneously to carry out relative slip between slip post 11 and the 8 lateral walls of fixture block.

Draw the head and adopt the structural style of fixture block 8 and V type shell fragment 10, utilize the elasticity of shell fragment 10 to realize the free rotation of fixture block 8, and then realize that the automation of fixture block 8 is accomodate and is stretched out, need not manual adjustment, and the convenience of operation has been improved to self-adaptation.

The bottom of the supporting seat 1 is connected with a positioning retainer ring 4, and the positioning retainer ring 4 is matched with the inner diameter of a cylinder opening 12 of the cylinder sleeve, so that the positioning function can be achieved.

Example two

With continuing reference to fig. 1-7, the other structures of the extractor for the fan seat 13 of the slurry pump provided in this embodiment are the same as those of the first embodiment, except that the drawing head in this embodiment further has another structural form, the top of the clamping seat 7 is provided with a jack 71, the jack 71 is a blind hole, the top of the clamping seat 7 is connected with a connecting plate 74, the connecting plate 74 is welded to the clamping seat 7, and the connecting plate 74 is provided with a first hole 741; the central rod 6 is provided with a second hole 61 corresponding to the first hole 741, and when the tool is used, the drawing head can be connected with the central rod 6 by penetrating bolts through the first hole 741 and the second hole 61.

The working principle of the utility model is as follows:

when the device is used, after all the parts are connected, the supporting seat 1 is placed above the cylinder opening 12, and the drawing head penetrates through a hole in the valve seat 13 to be used; when the drawing head is in an initial state, under the action of the elastic sheet 10, the fixture block 8 extends out of the accommodating cavity 72 and is in an open state; along with the downward movement of the drawing head, the clamping block 8 is extruded under the action of the inner hole wall of the valve seat 13, the elastic sheet 10 is compressed to generate elastic force, and along with the continuous downward movement, the clamping block 8 is gradually retracted until the drawing head passes through the valve seat 13; when the fixture block 8 penetrates out of the valve seat 13, the fixture block 8 is spread under the elastic force of the elastic sheet 10, the fixture block 8 rotates around the pin shaft 9 and extends out of the accommodating cavity 72 again, and the fixture block 8 forms a stop; then, the manual hydraulic pump is operated to press, the hydraulic cylinder 2 acts, the piston rod 5 moves upwards, and the valve seat 13 can be pulled out.

The utility model has simple structure and convenient use, can save a large amount of manpower and time, effectively improves the working efficiency and reduces the maintenance cost; the utility model discloses a one set of product possesses not unidimensional pull-out head, can select according to actual need, and the pull-out head adopts with well core rod 6 and to dismantle the connected mode, and wherein can dismantle the connected mode and be threaded connection or peg graft, like this, can conveniently carry out the quick replacement of pull-out head.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (7)

1. The mud pump valve seat extractor comprises a supporting seat and is characterized in that a hydraulic cylinder is connected above the supporting seat and is connected with a hydraulic power source for driving the hydraulic cylinder to act; a piston rod of the hydraulic cylinder freely penetrates through the supporting seat and extends to the position below the supporting seat; the bottom of the piston rod is connected with a central rod, the bottom of the central rod is detachably connected with a drawing head, the drawing head comprises a clamping seat, the clamping seat is provided with a containing cavity, the containing cavity is connected with symmetrically arranged hinge pins, each hinge pin is respectively and relatively rotatably connected with a clamping block for clamping the end face of a valve seat, and the outer side surface of each clamping block is obliquely arranged; the clamping block is characterized in that a partition plate is connected in the accommodating cavity, an elastic piece with elasticity is further arranged between the clamping block and the partition plate, the elastic piece is V-shaped and provided with two ends, one end is connected with the partition plate, and the other end is in contact connection with the side wall of the clamping block.

2. The mud pump valve seat extractor of claim 1, wherein the hydraulic power source is a manual hydraulic pump.

3. The mud pump valve seat extractor as claimed in claim 1, wherein the fixture block is in the shape of a kitchen knife, the fixture block includes a handle portion and a main body portion connected to the handle portion, and a clamping groove is formed at a connection portion of the main body portion and the handle portion.

4. The mud pump valve seat extractor of claim 3, wherein a clamping table is arranged in the accommodating cavity, the clamping table is connected with the clamping seat, and the clamping table is matched and clamped with the clamping groove.

5. The mud pump valve seat extractor of claim 1, wherein one end of the spring plate is connected with a sliding column, and the sliding column is in contact connection with the side wall of the fixture block.

6. The mud pump valve seat extractor of claim 1, wherein a threaded hole is formed in the top of the clamping block, and the bottom end of the center rod is threaded into the threaded hole.

7. The mud pump valve seat extractor of claim 1, wherein a positioning collar is coupled to a bottom of the support base.

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