Packing box capable of quickly taking packing

Abstract

The utility model relates to the technical field of packing boxes, in particular to a packing box capable of taking packing quickly. Comprising a vertical cylinder, a hoop head is machined at the lower end of the vertical cylinder, rubber gates are installed on the two sides, above the hoop head, of the vertical cylinder, an inner step is machined in the upper portion of the vertical cylinder, an annular groove concentric with the vertical cylinder is formed in the inner step, a plurality of grooves are formed in the outer side, below the annular groove, of the vertical cylinder, the grooves are communicated with the annular groove through vertical through holes, and a top ring is installed in the annular groove. An ejector rod is inserted into the through hole in a sliding and sealing mode, the upper end of the ejector rod is fixedly connected with the ejector ring, the lower end of the ejector rod is located in the groove, the lower end of the ejector rod is elastically connected with the vertical cylinder, packing is installed on the portion, above the inner step, of the inner cylinder, a pressing sleeve is detachably fixed in the upper end of the vertical cylinder, and the lower end of the pressing sleeve tightly abuts against the packing. And after the pressing sleeve is detached, the ejector rod drives the ejector ring to move upwards, then the packing in the vertical cylinder can be ejected out, the packing can be conveniently replaced, and the packing replacing efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of disc packing box technical field, specifically to a kind of disc packing box of disc packing type cache. BACKGROUND

[0002] In oil exploitation, the up and down reciprocating motion of surface pumping unit drives downhole oil pump to work through polished rod and sucker rod, which can pump downhole crude oil to the ground. During the pumping process, the polished rod reciprocates up and down at the wellhead continuously. In order to maintain the sealing between the polished rod and the wellhead, a stationary disc packing box is usually set at the wellhead, and a disc packing is arranged in the disc packing box. The hollow disc packing box and the disc packing are passed through by the movable polished rod, and the tight fit between the polished rod and the disc packing realizes the isolation of the downhole and the ground environment.

[0003] The disc packing in the disc packing box needs to be replaced after a period of use. When replacing the disc packing, a fishing hook and a chisel are needed, which is time-consuming and labor-intensive, reduces the well opening rate of the oil well, causes yield loss, and the efficiency of replacing the disc packing is very low, affecting the work efficiency of the staff.

[0004] In order to solve the above technical problems, the patent file with publication number CN203430463U discloses a disc packing box of disc packing type cache, which is composed of a plug, a disc packing, a coupling, a vertical cylinder and a rubber gate and a clamping head on the vertical cylinder. The plug is connected to the upper inner thread of the coupling through its outer thread; the lower inner thread of the coupling is connected to the upper outer thread of the vertical cylinder; the disc packing is filled between the lower flat surface of the plug in the coupling and the upper flat surface of the vertical cylinder; the vertical cylinder is a hollow cylinder with an outer thread at the upper part, rubber gates welded on both sides of the middle part and a clamping head at the bottom, and the vertical cylinder is connected to the wellhead through the clamping head. Before taking the disc packing, the well is stopped, the rubber gate is closed, the plug is removed, the coupling is tightened downward, and the disc packing is pushed out by the upper flat surface of the vertical cylinder, which avoids using a fishing hook and a chisel, saves the time of taking the disc packing, increases the well opening rate of the oil well, and reduces the yield loss. However, a certain amount of time is needed to tighten the coupling downward, and the efficiency of taking the disc packing is not too high.

[0005] The patent document with the authorization announcement number CN113006728B discloses a kind of fast cache packing type packing box, including box body, box cover and pull ring, the bottom of the box body is fixedly connected with bottom cover, the outer circle of the top end of the box body is equipped with external thread, the inner wall of the box cover is equipped with internal thread compatible with external thread, the both sides of the inner chamber of the box body are equipped with movable slot, the both sides of the top of the bottom cover are equipped with power slot, the bottom of the inner chamber of two power slots is movably connected with screw rod one, the other end of the screw rod one extends to the top end of the inner chamber of movable slot, and the inner chamber of the screw rod one and movable slot is movably connected, the outer circle of two screw rod one is screw-connected with screw block, screw block is located in the inner chamber of movable slot, and the inner chamber of screw block and movable slot is movably connected, the other end of screw block is fixedly connected with push plate, the inner chamber of the box body is movably connected with push plate, the outer circle of the bottom end of the box body is evenly fixedly connected with motor, the output shaft end of the motor is fixedly connected with screw rod two, the pull ring is evenly equipped with threaded hole, and the inner chamber of screw rod two and threaded hole is screw-connected, the top of the pull ring is clamped with two pressure rods.The rotation of motor can drive the fixedly connected worm to rotate, the worm drives the meshed gear ring two to rotate, the gear ring two drives the fixedly connected screw rod one, the rotating screw rod one drives the fixedly connected gear ring one to rotate, the gear ring one drives the other gear ring one to rotate through the transmission chain wound on the outer circle thereof, the other gear ring one drives the fixedly connected screw rod one to rotate, and the rotation of two screw rod one makes the fixedly connected push plate move in the inner chamber of the box body, and the movement of push plate can push the packing in the box body out.However, the technical scheme has complex structure, high production cost and high failure rate, so it is not convenient to use. Practical new type content

[0006] The main purpose of the present application is to provide a fast cache packing type packing box with low production cost, suitable for popularization and application, and high packing taking-out efficiency.

[0007] In order to achieve the above-mentioned purpose, the technical scheme provided by the present application is:

[0008] A fast cache packing type packing box, comprising a vertical cylinder, a clamp head is machined at the lower end of the vertical cylinder, rubber gate is installed on both sides of the vertical cylinder above the clamp head, an inner step is machined in the upper part of the vertical cylinder, a ring groove concentric with the vertical cylinder is opened on the inner step, a plurality of grooves are opened on the outer side of the vertical cylinder below the ring groove, the grooves are communicated with the ring groove through vertical through holes, a top ring is installed in the ring groove, the top ring is in sliding contact with the inner wall of the vertical cylinder above it, a top rod is slidingly and sealingly inserted in the through hole, the top rod is fixedly connected with the top ring at the upper end, the lower end of the top rod is located in the groove, and the lower end of the top rod is elastically connected with the vertical cylinder, a packing is installed on the inner cylinder part above the inner step, a pressing sleeve is detachably fixed at the upper end of the vertical cylinder, and the lower end of the pressing sleeve abuts against the packing.

[0009] Specifically, the upper end of the top ring is flush with the upper end of the inner step.

[0010] Specifically, the stand cylinder and the clamping head are integrally formed.

[0011] Specifically, a sealing groove is formed on the hole wall of the through hole, and a sealing ring is installed in the sealing groove.

[0012] Specifically, a fixed rod is fixed to the lower end of the top rod, and the fixed rod is connected with the stand cylinder through a tension spring.

[0013] Specifically, the stand cylinder is threadedly connected with the pressing sleeve.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The top rod and the top ring are elastically and slidingly connected with the stand cylinder, the top ring can exert upward pressure on the packing during use of the packing box, and the packing can be always squeezed to ensure the sealing performance of the packing and the sucker rod.

[0016] 2. After the pressing sleeve is disassembled, the top rod drives the top ring to move upward, thereby the packing in the stand cylinder can be pushed out, the packing can be conveniently replaced, and the efficiency of replacing the packing can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional view of the utility model.

[0018] Figure 2 is a sectional view of the stand cylinder.

[0019] Figure 3 is a sectional view of the cooperation of the top ring, the top rod and the stand cylinder.

[0020] The names of the parts in the drawings are: 1, stand cylinder, 2, pressing sleeve, 3, rubber gate, 4, clamping head, 5, packing, 6, top ring, 7, top rod, 8, fixed rod, 9, tension spring, 10, groove, 11, through hole, 12, ring groove, 13, inner step, 14, sealing ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0022] Embodiment one: referring to Figures 1-3 the drawing, a packing box capable of caching packing, comprising a stand cylinder 1, a clamping head 4 is formed on the lower end of the stand cylinder 1, and the stand cylinder 1 and the clamping head 4 are integrally formed.

[0023] Rubber gate 3 is installed on both sides of vertical cylinder 1 above clamp head 4. Clamp head 4 is installed on the well mouth.

[0024] Inner step 13 is processed in the upper part of vertical cylinder 1, ring groove 12 is opened on inner step 13 and is concentric with vertical cylinder 1, a plurality of grooves 10 are opened on the outer side of vertical cylinder 1 below ring groove 12, grooves 10 are communicated with ring groove 12 through vertical through hole 11, top ring 6 is installed in ring groove 12, top ring 6 is in sliding contact with the inner wall of vertical cylinder 1 above it, the upper end of top ring 6 is flush with the upper end of inner step 13. Top rod 7 is inserted and sealed in sliding mode in through hole 11, sealing groove is processed on the hole wall of through hole 11, sealing ring 14 is installed in sealing groove, top rod 7 is in sliding sealing connection with vertical cylinder 1 through a plurality of sealing rings 14. The upper end of top rod 7 is fixedly connected with top ring 6, the lower end of top rod 7 is located in groove 10, packing 5 is installed on the inner cylinder part above inner step 13.

[0025] Pressure sleeve 2 is detachably fixed on the upper end of vertical cylinder 1, the lower end of pressure sleeve 2 abuts against packing 5. Specifically, vertical cylinder 1 is in threaded connection with pressure sleeve 2.

[0026] When installing packing 5, packing 5 is installed in vertical cylinder 1 above inner step 13, and then pressure sleeve 2 is tightened, so that pressure sleeve 2 extrudes packing 5 in vertical cylinder 1.

[0027] When replacing packing 5, pressure sleeve 2 is disassembled, and then top rod 7 drives top ring 6 to go up, in the process of top rod 7 driving top ring 6 to go up, top ring 6 can push out packing 5 in vertical cylinder 1.

[0028] Because top ring 6 is in sliding contact with the inner wall of vertical cylinder 1 above it, top ring 6 can scrape off impurities adhered to the inner wall of vertical cylinder 1 above it when top ring 6 goes up.

[0029] Example two: on the basis of example one, referring to Figure 1 and Figure 3 the lower end of top rod 7 is elastically connected with vertical cylinder 1. Specifically, fixed rod 8 is fixed on the lower end of top rod 7, fixed rod 8 is connected with vertical cylinder 1 through tension spring 9.

[0030] In the process of using packing 5 box, fixed rod 8 and top rod 7 drive top ring 6 to go up and extrude packing 5 in vertical cylinder 1 under the elastic force of tension spring 9, top ring 6 can always extrude packing 5, thereby improving the sealing performance of packing 5 and sucker rod.

[0031] After the pressure sleeve 2 is disassembled, the fixed rod 8 and the top rod 7 make the top ring 6 go up and automatically push out the packing 5 in the stand cylinder 1 under the elastic force of the tension spring 9, so that the packing 5 can be quickly taken out. When the packing 5 is installed, the top rod 7 and the top ring 6 go down through the fixed rod 8, and when the top ring 6 is located in the ring groove 12, the fixed rod 8 is stably fixed, then the packing 5 can be installed into the stand cylinder 1 above the inner step 13, and finally the pressure sleeve 2 is installed to tightly abut against the packing 5 in the stand cylinder 1.

[0032] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cacheable packing type packing box, comprising a vertical cylinder (1), the lower end of the vertical cylinder (1) is provided with a clamp head (4), and rubber gates (3) are installed on both sides of the vertical cylinder (1) above the clamp head (4), characterized in that, The inner step (13) is processed in the upper part of the vertical cylinder (1), the annular groove (12) concentric with the vertical cylinder (1) is arranged on the inner step (13), the plurality of grooves (10) are arranged on the outer side of the vertical cylinder (1) below the annular groove (12), the grooves (10) and the annular groove (12) are communicated through the vertical through hole (11), the top ring (6) is installed in the annular groove (12), the top ring (6) is in sliding contact with the inner wall of the vertical cylinder (1) above the top ring (6), the top rod (7) is slidably and sealingly inserted into the through hole (11), the top rod (7) is fixedly connected with the top ring (6) at the upper end of the top rod (7), the lower end of the top rod (7) is located in the groove (10), the lower end of the top rod (7) is elastically connected with the vertical cylinder (1), the packing (5) is installed on the inner cylinder part above the inner step (13), the pressing sleeve (2) is detachably fixed in the inner end of the vertical cylinder (1), and the lower end of the pressing sleeve (2) abuts against the packing (5).

2. The cacheable packing type packing case according to claim 1, wherein, The upper end of the top ring (6) is flush with the upper end of the inner step (13).

3. The cacheable packing type packing case according to claim 1, wherein, The vertical cylinder (1) is integrally formed with the clamp head (4).

4. The cacheable packing type packing case according to claim 1, wherein, The sealing groove is processed on the hole wall of the through hole (11), the sealing ring (14) is installed in the sealing groove, and the top rod (7) is slidably and sealingly connected with the vertical cylinder (1) through the plurality of sealing rings (14).

5. The cacheable packing type packing case according to claim 1, wherein, The fixed rod (8) is fixedly connected with the lower end of the top rod (7), and the fixed rod (8) is connected with the vertical cylinder (1) through the tension spring (9).

6. The cacheable packing type packing case according to claim 1, wherein, The vertical cylinder (1) is threadedly connected with the pressing sleeve (2).

Images