CN201836042U - Detaching device for valve seat of polymer-injecting pump - Google Patents

Abstract

Disclosed is a detaching device for a valve seat of a polymer-injecting pump. The valve seat is mounted in a cylinder sleeve, the lower portion of an expansion block is inserted into a conical inner hole of the valve seat, the expansion block is mounted at a window of an expansion block seat, the upper portion of the expansion block seat is fixedly connected with the lower portion of a detaching rod, the detaching rod is nested outside an expansion rod, the lower portion of the expansion rod is provided with a cone, the inner wall of the lower portion of the expansion block contacts with the cone on the lower portion of the expansion rod, the detaching rod penetrates through a beam, the beam is placed into an upper port of the cylinder sleeve, a positioning rod is transversally mounted on the beam, threads on the upper portion of the detaching rod are screwed with a detaching nut, and threads on the upper portion of the expansion rod are screwed with an expansion nut. The expansion nut is screwed so that the expansion block moves outwards, the valve seat is hung on a circular arc surface of the outer cone of the lower portion of the expansion block, then the detaching nut is screwed, and the detaching rod, the expansion block seat and the expansion block travel upwards so that the valve seat is pulled out of the cylinder sleeve. Accordingly, the detaching device can be used for detaching the valve seat conveniently and quickly, is low in labor intensity of workers, high in work efficiency and fine in operation quality, avoids damage on the valve seat, and has remarkable economic benefit.

Description

The dismounting device of polymer-injecting pump valve seat

Technical field:

The utility model is the instrument that the oil field polymer-injecting pump is repaired usefulness, is the dismounting device of a kind of polymer-injecting pump valve seat.

Background technique:

During tertiary oil production in oil field, polymer need be squeezed in the stratum by polymer-injecting pump, the valve seat of polymer-injecting pump needs frequent dismounting, because polymer-injecting pump works under hard conditions, it is dead that valve seat is easy to rust, because the space is narrow and small, valve seat is not quick detachable again, adopt time-consuming, the effort of existing instrument dismounting valve seat, damage valve seat easily, workmanship is poor, makes the polymer-injecting pump cisco unity malfunction sometimes, influence field produces, produce heavy economic losses.

Summary of the invention:

The purpose of this utility model provides the dismounting device of a kind of polymer-injecting pump valve seat, can dismantle the polymer-injecting pump valve seat easily and efficiently.

The purpose of this utility model has been achieved in that valve seat, cylinder sleeve, valve seat is installed in the cylinder sleeve, it is conical that the valve seat endoporus is, upper end diameter is little, lower end diameter is big, also has the swelling nut, the dismounting nut, the location crossbeam, positioning rod, removal rod, the swelling block, expanding block, the swelling bar, insert in the valve seat endoporus expanding block bottom, expanding block bottom external conical shape arc face and valve seat endoporus match, and expanding block is installed in the window place of swelling block, and swelling block top and removal rod bottom are connected and fixed, removal rod is sleeved on outside the swelling bar, swelling bar bottom is taper, and the expanding block lower inner wall contacts with swelling bar lower taper, and removal rod passes crossbeam, crossbeam is put into the cylinder sleeve upper end-hole, positioning rod laterally is installed on the crossbeam, removal rod top screw thread and dismounting nut driving, swelling bar top screw thread and swelling nut driving.

The beneficial effects of the utility model: screw the swelling nut expanding block is outwards moved, expanding block bottom external conical shape arc face tangles valve seat, screws the dismounting nut again, and removal rod, swelling block, expanding block are up, valve seat is extracted in cylinder sleeve, therefore, the utility model can be dismantled valve seat easily and efficiently, and labor strength is low, high working efficiency, do not damage valve seat, workmanship is good, has remarkable economic efficiency.

Description of drawings:

Accompanying drawing 1 is the utility model embodiment's a erection drawing.

Embodiment:

1 couple of the utility model embodiment describes below in conjunction with accompanying drawing.

By accompanying drawing 1 as can be known, embodiment of the present utility model is by swelling nut 1, dismounting nut 2, location crossbeam 3, positioning rod 4, removal rod 5, swelling block 6, expanding block 7, valve seat 8, swelling bar 9, cylinder sleeve 10 is formed, valve seat 8 is installed in the cylinder sleeve 10, valve seat 8 is worked in cylinder sleeve 10, it is conical that valve seat 8 endoporus are, upper end diameter is little, lower end diameter is big, insert in valve seat 8 endoporus expanding block 7 bottoms, expanding block 7 bottom external conical shape arc faces and valve seat 8 endoporus match, expanding block 7 is installed in window 11 places of swelling block 6, window 11 has 3-4, be evenly distributed on the swelling block 6, each window is installed an expanding block 7 for 11 li, window 11 makes expanding block 7 can only inwardly outwards move and can not upwards move down with respect to swelling block 6, swelling block 6 tops and removal rod 5 bottoms are connected and fixed, firm welding again after being threaded, removal rod 5 is sleeved on outside the swelling bar 9, swelling bar 9 bottoms are taper, expanding block 7 lower inner wall contact with swelling bar 9 lower taper, removal rod 5 passes crossbeam 3, crossbeam 3 is put into cylinder sleeve 10 upper end-hole, positioning rod 4 laterally is installed on the crossbeam 3, positioning rod 4 makes crossbeam 3 be positioned at the upper end-hole of cylinder sleeve 10, can be stuck in after stretch out positioning rod 4 outer ends on the male member of polymer-injecting pump crossbeam 3 is not rotated, removal rod 5 top screw threads are screwed with dismounting nut 2, when screwing dismounting nut 2, removal rod 5 is up, when screwing swelling nut 1, swelling bar 9 is up, and swelling bar 9 top screw threads and swelling nut 1 are screwed.

Before expanding block 7 is packed in the valve seat 8, expanding block 7 lower inner wall can not contact with swelling bar 9 lower taper, expanding block 7 can in move, its boundary dimension is diminished can enter in the valve seat, screw swelling nut 1 then, expanding block 7 lower inner wall are contacted with swelling bar 9 lower taper, expanding block 7 outwards moves under conical surface effect, expanding block 7 bottom external conical shape arc faces tangle valve seat 8, screw dismounting nut 2 again, removal rod 5, swelling block 6, expanding block 7 are up, and valve seat 8 is extracted in cylinder sleeve 10.

Claims (1)

1. polymer-injecting pump valve seat dismounting device, valve seat (8) is arranged, cylinder sleeve (10), valve seat (8) is installed in the cylinder sleeve (10), it is conical that valve seat (8) endoporus is, upper end diameter is little, lower end diameter is big, it is characterized in that: also have swelling nut (1), dismounting nut (2), location crossbeam (3), positioning rod (4), removal rod (5), swelling block (6), expanding block (7), swelling bar (9), insert in valve seat (8) endoporus expanding block (7) bottom, expanding block (7) bottom external conical shape arc face and valve seat (8) endoporus match, expanding block (7) is installed in the window (11) of swelling block (6) and locates, swelling block (6) top and removal rod (5) bottom are connected and fixed, removal rod (5) is sleeved on outside the swelling bar (9), swelling bar (9) bottom is taper, expanding block (7) lower inner wall contacts with swelling bar (9) lower taper, removal rod (5) passes crossbeam (3), crossbeam (3) is put into cylinder sleeve (10) upper end-hole, positioning rod (4) laterally is installed on the crossbeam (3), removal rod (5) top screw thread is screwed with dismounting nut (2), and swelling bar (9) top screw thread and swelling nut (1) are screwed.

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