CN210315621U - Precipitation well head visor - Google Patents

Precipitation well head visor Download PDF

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Publication number
CN210315621U
CN210315621U CN201921226192.2U CN201921226192U CN210315621U CN 210315621 U CN210315621 U CN 210315621U CN 201921226192 U CN201921226192 U CN 201921226192U CN 210315621 U CN210315621 U CN 210315621U
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China
Prior art keywords
handle
connecting rod
cover plate
hole
circular cover
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CN201921226192.2U
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Chinese (zh)
Inventor
蔡昌红
王贵宾
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China Metallurgical Construction Engineering Group Co Ltd
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China Metallurgical Construction Engineering Group Co Ltd
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Priority to CN201921226192.2U priority Critical patent/CN210315621U/en
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Abstract

The utility model discloses a precipitation well head visor, including circular apron, the hole is laid to equipment has been seted up at the center of circular apron, equipment is laid hole department and is provided with the closing plate, the upper surface of closing plate and be close to in its marginal position be provided with at least three spacing buckle, the lower surface of circular apron just is located one side fixedly connected with free bearing of equipment laying hole, the free bearing includes the collateral branch frame of two relative settings, one side along its relative direction on two collateral branch frames is provided with the slide respectively, the circular apron place plane of length direction perpendicular to of slide, be provided with the hinge between two collateral branch frames, the both ends of hinge are sliding connection respectively on the slide of both sides with can make the hinge remove along slide length direction, the lower surface of closing plate is provided with the one end and the closing plate fixed connection of connecting rod and connecting rod, the other end rotation of connecting rod is connected on the hinge. The utility model discloses simple structure has made things convenient for laying of precipitation operation equipment, also improves the security of well head protection simultaneously.

Description

Precipitation well head visor
Technical Field
The utility model relates to a well lid, concretely relates to precipitation well head visor.
Background
The precipitation engineering refers to the application of the principles of hydrology and geology, through precipitation design and precipitation construction, surface water is discharged, the water level of underground water such as stagnant water, diving water, confined water, bedrock water, karst water and the like in the stratum is reduced, the precipitation depth and time requirements of construction engineering are met, and the engineering environment is not harmfully influenced. In order to ensure the construction safety, a protective cover is usually arranged at a precipitation wellhead, so that safety accidents caused by accidental falling of construction personnel are avoided. However, in the operation of precipitation, the protective cover needs to be opened and the water pumping equipment such as a submersible pump needs to be placed, so that potential safety hazards are formed, and safety accidents are easy to happen.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide one kind can make things convenient for laying of pumping equipment, can improve the precipitation well head visor of security again simultaneously.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a protective cover of a dewatering wellhead comprises a circular cover plate, wherein a device placing hole which is concentric with the circular cover plate is formed in the center of the circular cover plate, a sealing plate which is consistent with the device placing hole in shape and used for sealing the device placing hole is arranged at the device placing hole, at least three limiting buckles are arranged on the upper surface of the sealing plate and close to the edge of the sealing plate, the center of the sealing plate is positioned in a polygon formed by all the limiting buckles which are sequentially connected, each limiting buckle comprises a rotating shaft fixedly connected to the sealing plate, a limiting block is arranged on the rotating shaft, one end of the limiting block is sleeved on the rotating shaft and can rotate around the rotating shaft, a limiting nut is in threaded connection with the upper end of the rotating shaft so as to limit the limiting block to move towards the direction far away from the sealing plate, one end of the limiting block, far away from the rotating shaft, can rotate to the circular, the lower surface of the circular cover plate is fixedly connected with a hinged support on one side of a device placing hole, the hinged support comprises two side supports which are arranged oppositely, a slide way is arranged on one side of each side support along the opposite direction, the length direction of the slide way is perpendicular to the plane where the circular cover plate is located, the length of the slide way is larger than the hole depth of the device placing hole, a hinge shaft is arranged between the two side supports, the two ends of the hinge shaft are respectively connected to the slide ways on the two sides in a sliding mode and can enable the hinge shaft to move along the length direction of the slide way, the lower surface of the sealing plate is provided with a connecting rod, one end of the connecting rod is fixedly connected with the sealing plate, and.
Preferably, the sealing plate is provided with a pull handle, the pull handle comprises a handle and handle rods positioned at two ends of the handle, the handle rods comprise a connecting rod I and a connecting rod II, one end of the connecting rod I is fixedly connected with one end of the connecting rod II to enable the connecting rod I and the connecting rod II to be in an L-shaped structure integrally, the planes of the two handle rods are opposite and parallel, the central line of the handle is perpendicular to the plane of the handle rods, a rotating handle is fixedly connected to the position, on the handle, where the connecting rod I and the connecting rod II are fixed, on the side opposite to each other, of the two rotating handles are arranged on the same central line, the central line of the two rotating handles is perpendicular to the plane of the handle rods, one end, away from the connecting rod II, of the connecting rod I is fixedly connected with the end of the handle on the side, a balancing weight is fixedly connected to one end, away from the connecting rod I, the two rotating handles are positioned in the installation through holes and are rotatably connected to the hole walls of the installation through holes, the central lines of the rotating handles are parallel to the plane where the sealing plate is located, when the rotating handles rotate, the handles and the balancing weight block can penetrate through the installation through holes, and when the plane where the sealing plate is located is vertically arranged and the pull handle is in a natural state, the projection of the handles in the plane direction perpendicular to the circular cover plate is positioned in the projection of the equipment placing hole in the plane direction perpendicular to the circular cover plate.
As optimization, the handle is sleeved with a rotating sleeve which is matched with the handle in a rotating manner and integrally forms a waist drum shape, and the two sides of the handle, which are positioned on the rotating sleeve, are respectively provided with a retaining ring which is used for limiting the rotation of the rotating sleeve along the axial direction of the handle in a moving manner.
As optimization, connecting rod I is kept away from the outside arch of one end of connecting rod II is formed with rather than the coaxial projection that sets up, and the diameter of projection is less than the diameter of connecting rod I, the through-hole that can make the projection pass is seted up respectively at the both ends of handle, and the through-hole of its place one side is worn respectively to the projection, and the one side threaded connection who just is located it and passes the through-hole on the projection has and is used for making connecting rod I with the handle carries out the nut fixed.
Preferably, a cover plate fixing support is further arranged below the circular cover plate, the cover plate fixing support comprises two opposite and parallel adjusting screws, the plane of the two adjusting screws is parallel to the plane of the circular cover plate, two ends of each adjusting screw are respectively sleeved with a sliding sleeve and can be in sliding fit with the sliding sleeve along the length direction of the adjusting screw, a connecting support rod is arranged between the two sliding sleeves at the same end and is fixedly connected with the adjusting screw through the connecting support rod, the adjusting screw and the rod body between the two sliding sleeves on the adjusting screw are in threaded connection with two adjusting nuts, the two adjusting nuts can be respectively abutted against the sliding sleeve on one side of the adjusting screw to adjust the distance between the two sliding sleeves, one side of the two connecting support rods opposite to each other is fixedly connected with a mounting seat, a mounting screw hole is arranged on the mounting seat, and the center line of the mounting screw hole is perpendicular to the plane of the two adjusting screws, the circular cover plate is provided with two mounting screw holes, the two mounting screw holes are arranged on the circular cover plate, the screw sections of the connecting screws penetrate through the circular cover plate and are in threaded connection with the mounting screw holes, equipment through holes are formed between the two adjusting screw rods and the two connecting support rods, and when the circular cover plate is connected with the connecting support rods through the connecting screws, the equipment placing holes are perpendicular to the equipment through holes in the projection in the plane direction of the circular cover plate, and the projection in the plane direction of the circular cover plate is perpendicular to the equipment through holes in the projection in the plane direction of the circular cover plate.
As an optimization, one end of the sliding sleeve, which is far away from the adjusting nut, is provided with a columnar plug which is concentric with the sliding sleeve, the outer diameter of the columnar plug is consistent with that of the sliding sleeve, the columnar plug faces towards one end of the sliding sleeve, a connecting stud which is coaxial with the columnar plug is formed in a protruding mode, the connecting stud is in threaded connection with the inner hole, which corresponds to the sliding sleeve, of the sliding sleeve, and the end, which is far away from the connecting stud, of the columnar plug is a round end.
Preferably, the circular cover plate is provided with a guide hole for the screw section of the connecting screw to pass through, the lower surface of the circular cover plate is fixedly connected with a reinforcing convex rib of a # -shaped structure at a position corresponding to the guide hole, and the guide hole is positioned in a middle frame formed by the reinforcing convex rib of the # -shaped structure.
When the cover plate fixing support is used, the cover plate fixing support is firstly installed, the cover plate fixing support is arranged in a precipitation well and close to the position of a well head, then the four adjusting nuts are respectively screwed and moved, the sliding pipe sleeves are respectively pushed outwards, and one ends of the sliding pipe sleeves, which are far away from the adjusting nuts, are abutted against the well wall of the precipitation well, so that the cover plate fixing support is fixed in the precipitation well; then covering the circular cover plate on the wellhead of the dewatering well, penetrating the circular cover plate through a connecting screw rod, connecting the circular cover plate to the mounting screw hole in a threaded manner, and fixing the circular cover plate on the wellhead of the dewatering well; the limiting block is rotated to be far away from the circular cover plate, the sealing plate falls towards the lower part of the circular cover plate after leaving the limiting block, and meanwhile, the connecting rod fixed with the sealing plate drives the hinge shaft to slide downwards along the slide way; when the hinge shaft slides downwards to the end part of the lower end of the slide way, the end part of the slide way limits the hinge shaft so that the hinge shaft cannot slide downwards any more, so that the connecting rod rotates around the hinge shaft, the sealing plate rotates to be vertically arranged under the action of gravity, the equipment placing hole is opened, the handle rotates around the rotating handle under the action of gravity of the balancing weight to one side of the sealing plate, which faces the equipment placing hole, and then the submersible pump is placed through the equipment placing hole to perform dewatering operation in the dewatering well; after the dewatering operation is completed, the submersible pump is taken out, then the closing plate is pulled through the holding handle, the closing plate is moved horizontally and towards the equipment placing hole when rotating, after the closing plate seals the equipment placing hole, the limiting block is rotated to enable the limiting block to abut against the upper surface of the circular cover plate to limit the closing plate, and the sealing cover of the dewatering well is completed.
To sum up, the beneficial effects of the utility model reside in that: the utility model discloses simple structure has made things convenient for laying of precipitation operation equipment, also improves the security of well head protection simultaneously.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:
fig. 1 is a sectional view of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, precipitation well head visor among this embodiment, including circular apron 1, circular apron 1's center is seted up rather than the equipment of concentricity and is laid the hole, equipment is laid the hole department and is provided with rather than the unanimous closed plate 2 that is used for laying the hole and carrying out the confined to equipment, closed plate 2's upper surface and the position that is close to in its edge are provided with at least three spacing buckle, closed plate 2's center is located all spacing buckles and connect the polygon that line formed in proper order, spacing buckle includes the pivot of fixed connection on closed plate 2, be provided with stopper 3 in the pivot, stopper 3's an pot head is established in the pivot in order to rotate around the pivot, pivot upper end threaded connection has stop nut 4 in order to keep away from closed plate 2 direction removal to stopper 3 and carry on spacingly, stopper 3 keeps away from the one end of pivot in order to rotate to circular apron 1 on and the butt is in order to keep away from circular apron 1 upper surface The below removes and carries on spacingly, the lower surface of circular apron 1 just is located one side fixedly connected with free bearing in the hole is laid to equipment, the free bearing includes two relative side branch framves 5 that set up, be provided with slide 6 respectively along one side of its relative direction on two side branch framves 5, the circular apron 1 place plane of length direction perpendicular to of slide 6, the length of slide 6 is greater than the hole depth in the hole is laid to equipment, be provided with hinge 7 between two side branch framves 5, sliding connection respectively on the slide 6 of both sides and can make hinge 7 remove along slide 6 length direction at the both ends of hinge 7, the lower surface of closing plate 2 is provided with connecting rod 8 and connecting rod 8's one end and closing plate 2 fixed connection, the other end rotation of connecting rod 8 is connected on hinge 7.
In the specific embodiment, the closing plate 2 is provided with a pull handle, the pull handle comprises a handle 9 and handle bars positioned at two ends of the handle 9, the handle bars comprise a connecting rod I10 and a connecting rod II 11, one end of the connecting rod I10 is fixedly connected with one end of the connecting rod II 11 so as to enable the whole body to be in an L-shaped structure, the planes of the two handle bars are arranged oppositely and parallelly, the central line of the handle 9 is perpendicular to the plane of the handle bars, a rotating handle is fixedly connected to the position on the handle bar, where the connecting rod I10 and the connecting rod II 11 are fixed, is positioned on one side opposite to the two handle bars, the two rotating handles are arranged on the same central line, the central line of the two rotating handles is perpendicular to the plane of the handle bars, one end of the connecting rod I10, far away from the connecting rod II 11, is fixedly connected with the end part of the handle 9, on one side, where the connecting rod I10 is far away from the, the sealing plate 2 is provided with an installation through hole, the two rotating handles are located in the installation through hole and are rotatably connected to the hole wall of the installation through hole, the central line of each rotating handle is parallel to the plane of the sealing plate 2, when the rotating handles rotate, the handle 9 and the balancing weight 12 can penetrate through the installation through hole, when the plane of the sealing plate 2 is vertically arranged and the pulling handle is in a natural state, the projection of the handle 9 in the plane direction perpendicular to the circular cover plate 1 is located in the projection of the equipment placing hole in the plane direction perpendicular to the circular cover plate 1.
In this embodiment, the cover is equipped with rather than normal running fit and wholly is the commentaries on classics cover of waist drum type on the handle 9, the both sides that just are located the commentaries on classics cover on the handle 9 are blocked respectively and are equipped with and are used for following the commentaries on classics cover the 9 axis direction of handle removes carries out spacing retaining ring.
In this embodiment, connecting rod I10 is kept away from the outside protruding projection that is formed with rather than coaxial setting of one end of connecting rod II 11, the diameter of projection is less than connecting rod I10's diameter, the through-hole that can make the projection pass is seted up respectively at the both ends of handle 9, and the projection passes the through-hole of its place one side respectively, and on the projection and be located its one side threaded connection who passes the through-hole and be used for making connecting rod I10 with handle 9 carries out the nut fixed.
In this embodiment, a cover plate fixing bracket is further disposed below the circular cover plate 1, the cover plate fixing bracket includes two adjusting screws 13 disposed oppositely and in parallel, a plane where the two adjusting screws 13 are disposed is parallel to a plane where the circular cover plate 1 is disposed, two ends of each adjusting screw 13 are respectively sleeved with a sliding sleeve 14 and the sliding sleeve 14 is in sliding fit with the adjusting screw 13 along a length direction thereof, a connecting support rod 15 is disposed between the two sliding sleeves 14 at the same end and is fixedly connected with the connecting support rod 15, two adjusting nuts 16 are screwed on the adjusting screw 13 and a rod body located between the two sliding sleeves 14 thereon, the two adjusting nuts 16 are capable of abutting against the sliding sleeve 14 at one side thereof to adjust a distance between the two sliding sleeves 14, and a mounting seat 17 is fixedly connected to a side of the two connecting support rods 15 opposite to each other, be provided with the installation screw on the mount pad 17, the installation screw is through-hole and two adjusting screw 13 place planes of centerline perpendicular to, the position that just corresponds two installation screws respectively on the circular cover plate 1 all is provided with connecting screw 18, and connecting screw 18's screw rod section pass in circular cover plate 1 and threaded connection are on the installation screw, are formed with the equipment via hole between two adjusting screw 13 and two connecting strut 15, work as circular cover plate 1 links together through connecting screw 18 and connecting strut 15, and the hole is laid along the perpendicular to equipment via hole is located along the perpendicular to in the projection of circular cover plate 1 place plane side.
In this specific embodiment, a cylindrical plug 19 that is coaxial with the sliding sleeve 14 is disposed at one end of the sliding sleeve 14 away from the adjusting nut 16, an outer diameter of the cylindrical plug 19 is consistent with an outer diameter of the sliding sleeve 14, a connecting stud that is coaxial with the sliding sleeve 14 is formed at one end of the cylindrical plug 19 that faces the sliding sleeve 14 in a protruding manner, the connecting stud is connected in an inner hole of the sliding sleeve 14 in a threaded manner, and one end of the cylindrical plug 19 away from the connecting stud is a round end.
In this embodiment, the circular cover plate 1 is provided with a guide hole for allowing the screw section of the connection screw 18 to pass through, the lower surface of the circular cover plate 1 is fixedly connected with a reinforcing convex rib of a # -shaped structure at a position corresponding to the guide hole, and the guide hole is located in a middle frame formed by the reinforcing convex rib of the # -shaped structure.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. The utility model provides a precipitation well head visor, includes circular apron, its characterized in that: the center of the circular cover plate is provided with an equipment placing hole which is concentric with the circular cover plate, the equipment placing hole is provided with a sealing plate which has the same shape with the equipment placing hole and is used for sealing the equipment placing hole, the upper surface of the sealing plate and the position close to the edge of the sealing plate are provided with at least three limiting buckles, the center of the sealing plate is positioned in a polygon formed by connecting all the limiting buckles in sequence, each limiting buckle comprises a rotating shaft fixedly connected with the sealing plate, a limiting block is arranged on the rotating shaft, one end of the limiting block is sleeved on the rotating shaft and can rotate around the rotating shaft, the upper end of the rotating shaft is in threaded connection with a limiting nut so as to limit the limiting block to move towards the direction far away from the sealing plate, one end of the limiting block far away from the rotating shaft can rotate to the circular cover plate and abut against the upper surface of the circular cover plate so as to limit the sealing plate, the hinged support comprises two oppositely arranged side supports, a slide way is respectively arranged on one side of each side support along the opposite direction, the length direction of the slide way is perpendicular to the plane of the circular cover plate, the length of the slide way is larger than the hole depth of the equipment placing hole, a hinged shaft is arranged between the two side supports, two ends of the hinged shaft are respectively connected to the slide ways on two sides in a sliding mode and can enable the hinged shaft to move along the length direction of the slide way, a connecting rod is arranged on the lower surface of the sealing plate, one end of the connecting rod is fixedly connected with the sealing plate, and the other end of the connecting rod is rotatably connected to the hinged.
2. The precipitation wellhead protective cover of claim 1, wherein: the sealing plate is provided with a pull handle, the pull handle comprises a handle and handle rods positioned at two ends of the handle, the handle rods comprise a connecting rod I and a connecting rod II, one end of the connecting rod I is fixedly connected with one end of the connecting rod II to enable the connecting rod I and the connecting rod II to be integrally in an L-shaped structure, the planes of the two handle rods are opposite and parallel, the central line of the handle is perpendicular to the plane of the handle rods, a rotating handle is fixedly connected to the position, fixed to the connecting rod I and the connecting rod II, of the handle rods, the rotating handle is positioned on the opposite side of the two handle rods, the two rotating handles are arranged on the same central line and perpendicular to the plane of the handle rods, one end, far away from the connecting rod II, of the connecting rod I is fixedly connected with the end of the handle on the side where the connecting rod II is positioned, one end, far away from the connecting rod I, of the connecting rod is fixedly connected with a balancing weight to enable the center of, the central line of the rotating handle is parallel to the plane of the sealing plate, when the rotating handle rotates, the handle and the balancing weight can penetrate through the installation through hole, when the plane of the sealing plate is vertically arranged and the pull handle is in a natural state, the projection of the handle in the plane direction perpendicular to the circular cover plate is located in the projection of the equipment placing hole in the plane direction perpendicular to the circular cover plate.
3. The precipitation wellhead protective cover of claim 2, wherein: the handle is sleeved with a rotating sleeve which is matched with the handle in a rotating mode and integrally forms a waist drum shape, and retaining rings which are used for limiting the rotation of the rotating sleeve along the axis direction of the handle are respectively clamped and arranged on the handle and positioned on two sides of the rotating sleeve.
4. The precipitation wellhead protective cover of claim 2, wherein: keep away from connecting rod I the outside arch of one end of connecting rod II is formed with rather than the coaxial projection that sets up, and the diameter of projection is less than the diameter of connecting rod I, the through-hole that can make the projection pass is seted up respectively at the both ends of handle, and the through-hole of its place one side is worn respectively to the projection, and the one side threaded connection who just is located it and passes the through-hole on the projection has and is used for making connecting rod I with the nut that the handle carries out the fixing.
5. The precipitation wellhead protective cover of claim 1, wherein: a cover plate fixing support is further arranged below the circular cover plate and comprises two opposite and parallel adjusting screw rods, the planes of the two adjusting screw rods are parallel to the plane of the circular cover plate, two ends of each adjusting screw rod are respectively sleeved with a sliding sleeve and can be in sliding fit with the sliding sleeve along the length direction of the adjusting screw rod, a connecting support rod is arranged between the two sliding sleeve at the same end and is fixedly connected with the adjusting screw rod through the connecting support rod, two adjusting nuts are in threaded connection with the adjusting screw rod and the rod body between the two sliding sleeve pipes on the adjusting screw rod, the two adjusting nuts can be respectively abutted against the sliding sleeve pipes on one side of the adjusting screw rod to adjust the distance between the two sliding sleeve pipes, one side of the two connecting support rods opposite to each other is fixedly connected with an installation seat, an installation screw hole is arranged on the installation seat, and the installation screw hole is a through hole, and the center line of, the circular cover plate is provided with two mounting screw holes, the two mounting screw holes are arranged on the circular cover plate, the screw sections of the connecting screws penetrate through the circular cover plate and are in threaded connection with the mounting screw holes, equipment through holes are formed between the two adjusting screw rods and the two connecting support rods, and when the circular cover plate is connected with the connecting support rods through the connecting screws, the equipment placing holes are perpendicular to the equipment through holes in the projection in the plane direction of the circular cover plate, and the projection in the plane direction of the circular cover plate is perpendicular to the equipment through holes in the projection in the plane direction of the circular cover plate.
6. The precipitation wellhead protective cover of claim 5, wherein: the end, far away from adjusting nut, of the sliding sleeve is provided with a columnar plug which is concentric with the sliding sleeve, the outer diameter of the columnar plug is consistent with that of the sliding sleeve, the columnar plug faces towards the end, protruding of the end of the sliding sleeve is provided with a connecting stud which is coaxial with the columnar plug, the connecting stud is in threaded connection with the inner hole of the sliding sleeve, and the end, far away from the connecting stud, of the columnar plug is a round end.
7. The precipitation wellhead protective cover of claim 5, wherein: the round cover plate is provided with a guide hole for the screw section of the connecting screw to pass through, the lower surface of the round cover plate is fixedly connected with a reinforcing convex rib of a # -shaped structure corresponding to the position of the guide hole, and the guide hole is positioned in a middle frame formed by the reinforcing convex rib of the # -shaped structure.
CN201921226192.2U 2019-07-31 2019-07-31 Precipitation well head visor Active CN210315621U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921226192.2U CN210315621U (en) 2019-07-31 2019-07-31 Precipitation well head visor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921226192.2U CN210315621U (en) 2019-07-31 2019-07-31 Precipitation well head visor

Publications (1)

Publication Number Publication Date
CN210315621U true CN210315621U (en) 2020-04-14

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ID=70127490

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921226192.2U Active CN210315621U (en) 2019-07-31 2019-07-31 Precipitation well head visor

Country Status (1)

Country Link
CN (1) CN210315621U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110258604A (en) * 2019-07-31 2019-09-20 中冶建工集团有限公司 A kind of precipitation well head protection cap

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110258604A (en) * 2019-07-31 2019-09-20 中冶建工集团有限公司 A kind of precipitation well head protection cap
CN110258604B (en) * 2019-07-31 2024-03-12 中冶建工集团有限公司 Dewatering wellhead protective cover

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