CN111637266B

CN111637266B - Bury formula valve convenient to clearance sweeps

Info

Publication number: CN111637266B
Application number: CN202010522954.4A
Authority: CN
Inventors: 不公告发明人
Original assignee: Yancheng Ourun Petrochemical Equipment Manufacturing Co ltd
Current assignee: Yancheng Ourun Petrochemical Equipment Manufacturing Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-11-19
Anticipated expiration: 2040-06-10
Also published as: CN111637266A

Abstract

The invention relates to the field of valves, in particular to a buried valve convenient for cleaning scraps, which comprises a fixed shell, a connecting mechanism, a control mechanism, a locking mechanism, a stretching mechanism, a limiting mechanism and a fastening mechanism, wherein the fixed shell is fixedly connected with the connecting mechanism; thereby the installation through the set casing is convenient to be connected the outside pipeline, it is fixed firm with ground inside to make the set casing under fastening device's effect simultaneously, be difficult for rocking and take out, and make the outside pipeline connect under coupling mechanism's effect, the convenience is to the transport at water source, be favorable to carrying out on-off control to the water source of transport under control mechanism's effect, make things convenient for the staff to maintain and the accessory is changed, be favorable to protecting control mechanism under the effect through blocked mechanical system simultaneously, drive through stop gear, thereby the convenience is adjusted stretching mechanism, thereby the convenience is cleared up and is maintained control mechanism and coupling mechanism inside.

Description

Bury formula valve convenient to clearance sweeps

Technical Field

The invention relates to the field of valves, in particular to a buried valve convenient for cleaning scraps.

Background

Valves are accessories for pipes used to open and close the pipe, control flow direction, regulate and control parameters of the transport medium. According to the function, the valve can be divided into a shut-off valve, a check valve, a regulating valve and the like, wherein the valve is a control part in a fluid conveying system and has the functions of stopping, regulating, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. The valves used in fluid control systems range from the simplest shut-off valves to the most complex valves used in autonomous systems, which are of a wide variety of types and specifications and can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals, and radioactive media. The valves are divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum vanadium steel valves, dual-phase steel valves, plastic valves, nonstandard valves and the like according to the materials.

Along with the great variety of valve, the place that the valve used also respectively has the difference, in order to protect the valve, partial valve can install in ground bottom, can not receive outside striking damage like this, however, the valve is put into the ground end after, can be inconvenient clear up the inside and peripheral debris of valve to cause the valve to damage, also inconvenient when the maintenance with the change accessory is operated.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a buried valve convenient for cleaning scraps.

The technical scheme adopted by the invention for solving the technical problems is as follows: a buried valve convenient for cleaning scraps comprises a fixed shell, a connecting mechanism, a control mechanism, a locking mechanism, a stretching mechanism, a limiting mechanism and a fastening mechanism; the side walls of two ends of the fixed shell for mounting and fixing are provided with a plurality of fastening mechanisms which are distributed at equal intervals and used for fastening and fixing the fixed shell and the ground; the connecting mechanism for connecting and conveying external pipelines is arranged outside the fixed shell; the control mechanism for controlling the on-off of an external pipeline is arranged in the fixed shell; the top of the control mechanism is provided with the locking mechanism for locking and opening and closing the control mechanism; the extension and descent mechanisms for lifting, cleaning, maintaining and replacing the connecting mechanism are respectively arranged in the two ends of the connecting mechanism; two limiting mechanisms used for carrying out lifting limiting control on the stretching and descending mechanism are respectively arranged on the inner sides of the two ends of the connecting mechanism.

Specifically, the fastening mechanism comprises clamping blocks and an extrusion spring, a plurality of clamping blocks which are distributed at equal intervals are respectively installed inside the side walls of the two ends of the fixed shell, and one ends of the clamping blocks extend to the outside of the fixed shell; the side wall of the other end of the fixture block is provided with a plurality of extrusion springs, and the fixture block is connected with the inside of the side wall of the fixed shell in a sliding manner through the extrusion springs; the fixture block is of a rectangular structure, and one end of the fixture block is of a right trapezoid structure.

Specifically, the connecting mechanism comprises a placing box, a water inlet pipe, a handle and a water outlet pipe, the placing box is installed inside the fixed shell and is connected with the inside of the fixed shell in a sliding mode, and the top of the placing box extends to the outer side of the top of the fixed shell; the bottom side of one end of the fixed shell is provided with the water inlet pipe, the bottom side of the other end of the fixed shell is provided with the water outlet pipe, and the water inlet pipe and the water outlet pipe respectively penetrate through the fixed shell and are communicated with the inside of the placing box; the handle is installed respectively to the top both sides of placing the box, just the handle is cylindrical structure.

Specifically, the control mechanism comprises a cover plate, a placing groove, a valve, a bolt and a guide groove, the placing groove is arranged in the placing box, and two sides of the placing groove respectively extend to the outer parts of two sides of the placing box; the valve is detachably connected with the bottom of the placing box through a plurality of bolts, and the guide grooves which are symmetrically distributed are respectively arranged in the two ends of the placing box; the both ends of valve respectively with the guide slot intercommunication, place the top of box and install the apron, just apron one end with place the box top and rotate and be connected.

Specifically, the locking mechanism comprises pull buckles, bayonet locks, compression springs and clamping grooves, the pull buckles are respectively installed on two sides inside the other end of the cover plate, the compression springs are respectively installed on one sides of the two pull buckles, and the pull buckles are connected with the inside of the cover plate in a sliding mode through the compression springs; the bayonet locks are respectively arranged on the other sides of the two pull buckles and are in sliding connection with the inner part of the cover plate through the pull buckles; the inside both sides of placing the box are equipped with respectively the draw-in groove, two bayonet lock one end respectively with the inside conflict of draw-in groove, two the one end of bayonet lock is the triangle-shaped structure.

Specifically, the extension and descent mechanism comprises a leather pad, a telescopic spring and sliding rods, the sliding rods are symmetrically arranged on the bottom sides of the two ends of the inside of the fixed shell respectively, and the sliding rods are of a cylindrical structure with a hollow inside; the bottom of one of the slide bars is communicated with the water outlet pipe, and the bottom of the other slide bar is communicated with the water inlet pipe; the two sliding rods are respectively connected with the insides of the two ends of the placing box in a sliding manner, and the leather pads are respectively arranged on the tops of the two sliding rods; the telescopic springs are respectively installed on the outer sides of the two sliding rods, and the tops of the two sliding rods are respectively communicated with the tops of the two guide grooves.

Specifically, the limiting mechanism comprises a pull rod, a lock catch, a contact spring, a protrusion, a lock groove and a return spring, the pull rod is respectively arranged inside two ends of the placing box, and the top of the pull rod is connected with the handle; the return springs are respectively arranged on one sides of the bottoms of the two pull rods, and the pull rods are in sliding connection with the inner part of the placing box through the return springs; one side of the bottoms of the two pull rods is of an arc-shaped structure, the inner sides of the bottoms of the two ends of the placing box are respectively provided with the lock catches, and the lock catches are of L-shaped structures; a plurality of the abutting springs are arranged on one side of the lock catch, and the lock catch is in sliding connection with the inside of the placing box through the abutting springs; the inner sides of the bottoms of the two ends of the fixed shell are respectively provided with the locking groove, and the bottom of the other side of the lock catch penetrates through the placing box and extends to the inside of the locking groove; the other side bottom one end of hasp is the triangle-shaped structure, install at the opposite side top of hasp the arch, just the arch with bottom one side of pull rod is contradicted.

The invention has the beneficial effects that:

(1) the buried valve convenient for cleaning the scraps is convenient for connecting an external pipeline by installing the fixed shell, the fixed shell is firmly fixed with the inside of the ground under the action of the fastening mechanism and is not easy to shake and take out, the external pipeline is connected under the action of the connecting mechanism, and a water source is conveniently conveyed, namely: when the set casing is put into the ground inside, can make a plurality of fixture blocks of set casing both ends lateral wall break away from the effect shrink of extrusion spring when the set casing moves down, get into the ground inside back completely when the set casing, a plurality of fixture blocks can be contradicted to the outside under extrusion spring's effect, thereby carry out the fastening of contradicting with the soil in the set casing outside, a plurality of fixture blocks are the right trapezoid structure simultaneously, can upwards mention easily and take out after making a plurality of fixture blocks contradict with ground, the fastness of the set casing has been ensured, through the installation of placing the box, thereby it is fixed to convenient placing the valve, also make things convenient for simultaneously will place the box through the handle and break away from the roll-off with the set casing, make things convenient for subsequent maintenance and change accessory, through being connected of inlet tube and outlet pipe and outside pipeline, thereby make the water source carry.

(2) The buried valve convenient for cleaning the scraps is beneficial to controlling the on-off of a conveyed water source under the action of the control mechanism, is convenient for workers to maintain and replace accessories, and is beneficial to protecting the control mechanism under the action of the locking mechanism, namely: the valve arranged inside the placing box is connected with the water inlet pipe and the water outlet pipe through the two guide grooves, so that the water source is convenient to convey, the on-off of the water inlet pipe and the water outlet pipe is conveniently controlled by the control of the valve, the valve is detachably connected by a bolt, thereby facilitating subsequent replacement and taking out, driving the valve inside the placing box conveniently by rotating the cover plate at the top of the placing box, then closing the cover plate, thereby protecting the valve and the inside of the placing box, when the cover plate and the placing box are opened and closed, the two pull buckles are moved, so that the pull buckles get rid of the action of the compression spring to drive the clamping pins to move, the two clamping pins are separated from the inside of the clamping grooves, thereby make things convenient for the apron to rotate, when the apron was closed, the bayonet lock was closed in the inside shutting of contradicting the draw-in groove of shrink under compression spring's effect, made the apron unable rotation open.

(3) The buried valve convenient for cleaning the scraps is driven by the limiting mechanism, so that the extension and descent mechanism is conveniently adjusted, the interiors of the control mechanism and the connecting mechanism are conveniently cleaned and maintained, and namely: when sundries need to be cleaned on the placing box and the valve, the placing box is driven to slide upwards along the inside of the fixed shell by pulling the handle, the two sliding rods slide under the action of breaking away the telescopic spring inside the placing box, the leather pads are arranged at the tops of the sliding rods to play a sealing role, water inside the sliding rods cannot overflow when the sliding rods slide, the handle can firstly drive the pull rods to slide inside the placing box when the handle is pulled, so that the bottom side of the sliding rods is butted with the bulges to move, the bulges drive the lock catches to break away from the insides of the lock grooves under the action of the butting spring, the placing box is convenient to slide and rise inside the fixed shell, after the placing box slides to a certain position, the lock catches can be butted with the lock grooves at the top sides inside the two ends of the fixed shell for limiting, the placing box can be ensured to be stable and cannot retract downwards, and the maintenance and replacement of workers are convenient, after maintenance and replacement, the handle is pulled, so that the placing box can slide downwards to reset conveniently.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of an overall structure of a buried valve convenient for cleaning scraps according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the connection mechanism and the control mechanism shown in FIG. 1;

FIG. 4 is an enlarged view of the portion B shown in FIG. 3;

fig. 5 is an enlarged schematic view of the portion C shown in fig. 3.

In the figure: 1. the fixed casing, 2, coupling mechanism, 21, place the box, 22, the inlet tube, 23, the handle, 24, the outlet pipe, 3, control mechanism, 31, the apron, 32, the standing groove, 33, the valve, 34, the bolt, 35, the guide slot, 4, blocked mechanical system, 41, draw the knot, 42, the bayonet lock, 43, compression spring, 44, the draw-in groove, 5, stretch and fall mechanism, 51, the leather pad, 52, expanding spring, 53, the slide bar, 6, stop gear, 61, the pull rod, 62, the hasp, 63, conflict spring, 64, the arch, 65, the locked groove, 66, reset spring, 7, fastening device, 71, the fixture block, 72, extrusion spring.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-5, the buried valve convenient for cleaning up the scraps of the present invention includes a fixed shell 1, a connecting mechanism 2, a control mechanism 3, a locking mechanism 4, a descending mechanism 5, a limiting mechanism 6 and a fastening mechanism 7; the side walls at two ends of the fixed shell 1 for mounting and fixing are provided with a plurality of fastening mechanisms 7 which are distributed at equal intervals and used for fastening and fixing the fixed shell 1 and the ground; the connecting mechanism 2 for connecting and conveying external pipelines is arranged outside the fixed shell 1; the control mechanism 3 for controlling the on-off of an external pipeline is arranged in the fixed shell 1; the top of the control mechanism 3 is provided with the locking mechanism 4 for locking and opening and closing the control mechanism 3; the extension and descent mechanisms 5 for lifting, cleaning, maintaining and replacing the connecting mechanism 2 are respectively arranged in the two ends of the connecting mechanism 2; two limiting mechanisms 6 used for carrying out lifting limiting control on the stretching and descending mechanism 5 are respectively arranged on the inner sides of the two ends of the connecting mechanism 2.

Specifically, the fastening mechanism 7 includes a plurality of fastening blocks 71 and an extrusion spring 72, the fastening blocks 71 are respectively mounted inside the side walls of the two ends of the fixed shell 1, and one end of each fastening block 71 extends to the outside of the fixed shell 1; a plurality of extrusion springs 72 are mounted on the side wall of the other end of the fixture block 71, and the fixture block 71 is slidably connected with the inside of the side wall of the fixed shell 1 through the extrusion springs 72; fixture block 71 is the rectangle structure, just the one end of fixture block 71 is the right trapezoid structure, works as when set casing 1 is put into the ground inside can make when set casing 1 moves down a plurality of the 1 both ends lateral wall of set casing 71 breaks away from shrink under the effect of extrusion spring 72, works as set casing 1 gets into the ground inside back completely, and is a plurality of fixture block 71 can be in external conflict under the effect of extrusion spring 72 to with the soil in the set casing 1 outside is contradicted the fastening, and is a plurality of simultaneously fixture block 71 is the right trapezoid structure, makes a plurality ofly fixture block 71 can not upwards mention easily after conflicting with ground and take out, has ensured the fastness of set casing 1.

Specifically, the connecting mechanism 2 comprises a placing box 21, a water inlet pipe 22, a handle 23 and a water outlet pipe 24, the placing box 21 is installed inside the fixed shell 1, the placing box 21 is connected with the inside of the fixed shell 1 in a sliding manner, and the top of the placing box 21 extends to the outer side of the top of the fixed shell 1; the water inlet pipe 22 is mounted on the bottom side of one end of the fixed shell 1, the water outlet pipe 24 is mounted on the bottom side of the other end of the fixed shell 1, and the water inlet pipe 22 and the water outlet pipe 24 respectively penetrate through the fixed shell 1 and are communicated with the interior of the placing box 21; place the top both sides of box 21 and install respectively handle 23, just handle 23 is cylindrical structure, through place the installation of box 21, thereby it is convenient right the placing of valve 33 is fixed, simultaneously also convenient pass through handle 23 will place box 21 with set casing 1 breaks away from the roll-off, makes things convenient for subsequent maintenance and change accessory, through inlet tube 22 with outlet pipe 24 and external pipeline's connection to make the water source carry.

Specifically, the control mechanism 3 includes a cover plate 31, a placement groove 32, a valve 33, a bolt 34 and a guide groove 35, the placement groove 32 is provided inside the placement box 21, and two sides of the placement groove 32 extend to the outside of two sides of the placement box 21 respectively; the valve 33 is detachably connected with the bottom of the placing box 21 through a plurality of bolts 34, and the guide grooves 35 which are symmetrically distributed are respectively arranged inside two ends of the placing box 21; the two ends of the valve 33 are respectively communicated with the guide grooves 35, the cover plate 31 is arranged on the top of the placing box 21, one end of the cover plate 31 is rotatably connected with the top of the placing box 21, the valve 33 arranged in the placing box 21 is connected with the water inlet pipe 22 and the water outlet pipe 24 through the two guide grooves 35, so that the water source transmission is facilitated, the control of the valve 33, thereby facilitating the control of the on-off between the inlet pipe 22 and the outlet pipe 24, the detachable connection of the valve 33 by the bolt 34, thereby facilitating subsequent replacement and removal, by rotating the cover plate 31 at the top of the placing box 21, thereby facilitating driving of the valve 33 inside the placing box 21, the cover plate 31 is then closed, thereby shielding the valve 33 and the inside of the placing box 21.

Specifically, the locking mechanism 4 includes a pulling buckle 41, a locking pin 42, a compression spring 43 and a locking slot 44, the pulling buckle 41 is respectively installed on two sides inside the other end of the cover plate 31, the compression spring 43 is respectively installed on one side of each of the two pulling buckles 41, and the pulling buckles 41 are slidably connected with the inside of the cover plate 31 through the compression springs 43; the bayonet pins 42 are respectively arranged on the other sides of the two pull buckles 41, and the bayonet pins 42 are connected with the inner part of the cover plate 31 in a sliding manner through the pull buckles 41; the inside both sides of placing box 21 are equipped with respectively draw-in groove 44, two bayonet lock 42 one end respectively with the inside conflict of draw-in groove 44, two the one end of bayonet lock 42 is the triangle-shaped structure, right lap 31 with when placing box 21 and opening, through removing two draw and detain 41, thereby make draw and detain 41 and break away from drive under compression spring 43's the effect bayonet lock 42 removes, makes two bayonet lock 42 with the inside separation of draw-in groove 44, thereby it is convenient lap 31 rotates, works as when lap 31 is closed, bayonet lock 42 is in shrink and conflict under compression spring 43's the effect draw-in groove 44 is inside to be blocked, makes lap 31 can't rotate and open.

Specifically, the lifting mechanism 5 comprises a leather pad 51, a telescopic spring 52 and a sliding rod 53, the sliding rods 53 are symmetrically arranged at the bottom sides of the two ends of the inside of the fixed shell 1, and the sliding rods 53 are of a hollow cylindrical structure; the bottom of one of the slide bars 53 is communicated with the water outlet pipe 24, and the bottom of the other slide bar 53 is communicated with the water inlet pipe 22; the two sliding rods 53 are respectively connected with the insides of the two ends of the placing box 21 in a sliding manner, and the leather pads 51 are respectively arranged on the tops of the two sliding rods 53; two install respectively in the outside of slide bar 53 expanding spring 52, two the top of slide bar 53 respectively with two guide slot 35 top intercommunication, it is right when needs place box 21 with when valve 33 clears up debris, through the pulling handle 23, thereby make handle 23 drives place box 21 edge the inside upwards slip of set casing 1, and make two slide bar 53 is in place the inside breaking away from of box 21 slide under expanding spring 52's the effect install at slide bar 53's top leather packing 51 has played sealed effect, makes slide bar 53 can not make when sliding the inside water of slide bar 53 spills over.

Specifically, the limiting mechanism 6 comprises a pull rod 61, a lock catch 62, a butting spring 63, a protrusion 64, a lock groove 65 and a return spring 66, the pull rod 61 is respectively installed inside two ends of the placing box 21, and the top of the pull rod 61 is connected with the handle 23; the return springs 66 are respectively installed on one side of the bottoms of the two pull rods 61, and the pull rods 61 are slidably connected with the inside of the placing box 21 through the return springs 66; one side of the bottoms of the two pull rods 61 is of an arc-shaped structure, the inner sides of the bottoms of the two ends of the placing box 21 are respectively provided with the lock catches 62, and the lock catches 62 are of L-shaped structures; a plurality of the abutting springs 63 are installed on one side of the lock catch 62, and the lock catch 62 is slidably connected with the inside of the placing box 21 through the abutting springs 63; the inner sides of the bottoms of the two ends of the fixed shell 1 are respectively provided with the locking groove 65, and the bottom of the other side of the lock catch 62 penetrates through the placing box 21 and extends to the inside of the locking groove 65; the other side bottom one end of hasp 62 is the triangle-shaped structure, the arch 64 is installed at the opposite side top of hasp 62, just the arch 64 contradicts with bottom one side of pull rod 61, when the pulling handle 23, handle 23 can drive at first pull rod 61 place box 21 inside and slide to make slide bar 53 bottom one side contradict the arch 64 removal, make protruding 64 drive hasp 62 break away from under the effect of conflict spring 63 with the inside separation of locked groove 65, thereby make things convenient for place box 21 and slide in the inside lift of set casing 1, after place box 21 slides to certain position, hasp 62 can with the inside top side of set casing 1 both ends locked groove 65 contradict spacing, make place box 21 can ensure stably, can not retract downwards, make things convenient for the staff to maintain and change, after maintenance and replacement, the placing box 21 is conveniently slid downwards to reset by pulling the handle 23.

When in use, firstly, when the fixed shell 1 is placed in the ground, when the fixed shell 1 moves downwards, the plurality of clamping blocks 71 on the side walls at the two ends of the fixed shell 1 can be contracted under the action of the extrusion spring 72, when the fixed shell 1 completely enters the ground, the plurality of clamping blocks 71 can be abutted outwards under the action of the extrusion spring 72, so as to be abutted and fastened with soil outside the fixed shell 1, meanwhile, the plurality of clamping blocks 71 are in a right trapezoid structure, so that the plurality of clamping blocks 71 can not be easily lifted upwards and taken out after being abutted with the ground, the firmness of the fixed shell 1 is ensured, the placing and fixing of the valve 33 are facilitated through the installation of the placing box 21, meanwhile, the placing box 21 can be conveniently separated from the fixed shell 1 through the handle 23, the subsequent maintenance and replacement of accessories are facilitated, and the water source can be conveyed through the connection between the water inlet pipe 22 and the water outlet pipe 24 and an external pipeline, through placing the valve 33 of box 21 internally mounted, through the connection of two guide slots 35 with inlet tube 22 and outlet pipe 24, make things convenient for the water source to carry, thereby conveniently control the break-make between inlet tube 22 and outlet pipe 24 at the control of valve 33, through the detachable connection of bolt 34 to valve 33, thereby make things convenient for subsequent change and take out, through rotating the apron 31 of placing the box 21 top, thereby conveniently drive placing the valve 33 of box 21 inside, then close apron 31, thereby protect valve 33 and placing box 21 inside, when opening to apron 31 and placing box 21, through removing two tabs 41, thereby make tab 41 break away from the effect of compression spring 43 and drive bayonet lock 42 and remove, make two bayonet lock 42 and the inside separation of draw-in groove 44, thereby make things convenient for apron 31 to rotate, when apron 31 is closed, bayonet lock contracts and contradicts the inside of draw-in groove 44 under the effect of compression spring 43, the cover plate 31 can not be rotated to be opened, when sundries need to be cleaned on the placing box 21 and the valve 33, the handle 23 is pulled to drive the placing box 21 to slide upwards along the inside of the fixed shell 1, the two sliding rods 53 slide under the action of breaking away from the telescopic spring 52 in the placing box 21, the leather pad 51 is arranged at the top of the sliding rod 53 to play a sealing role, so that water in the sliding rod 53 cannot overflow when the sliding rod 53 slides, the handle 23 can firstly drive the pull rod 61 to slide in the placing box 21 while pulling the handle 23, so that the abutting bulge 64 at one side of the bottom of the sliding rod 53 moves, the bulge 64 drives the lock catch 62 to break away from the inside of the lock groove 65 under the action of breaking away from the abutting spring 63, the placing box 21 can conveniently slide and rise in the fixed shell 1, after the placing box 21 slides to a certain position, the lock catch 62 can abut against the lock groove 65 at the top side in the two ends of the fixed shell 1 for limiting, the box 21 can ensure to be stable to make and place, can not contract downwards, makes things convenient for the staff to maintain and change, changes the back through pulling handle 23 when the maintenance to conveniently make and place box 21 gliding and reset.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a bury formula valve convenient to clearance sweeps which characterized in that: comprises a fixed shell (1), a connecting mechanism (2), a control mechanism (3), a locking mechanism (4), an extension and descent mechanism (5), a limiting mechanism (6) and a fastening mechanism (7); the side walls at two ends of the fixed shell (1) for mounting and fixing are provided with a plurality of fastening mechanisms (7) which are distributed at equal intervals and used for fastening and fixing the fixed shell (1) and the ground; the connecting mechanism (2) for connecting and conveying external pipelines is arranged outside the fixed shell (1); the control mechanism (3) for controlling the on-off of an external pipeline is arranged in the fixed shell (1); the top of the control mechanism (3) is provided with a locking mechanism (4) for locking and opening and closing the control mechanism (3); the extension and descent mechanisms (5) used for lifting, cleaning, maintaining and replacing the connecting mechanism (2) are respectively arranged in the two ends of the connecting mechanism (2); the inner sides of the two ends of the connecting mechanism (2) are respectively provided with two limiting mechanisms (6) for controlling the lifting and limiting of the stretching mechanism (5);

the connecting mechanism (2) comprises a placing box (21), a water inlet pipe (22), a handle (23) and a water outlet pipe (24), the placing box (21) is installed inside the fixed shell (1), the placing box (21) is connected with the inside of the fixed shell (1) in a sliding mode, and the top of the placing box (21) extends to the outer side of the top of the fixed shell (1); the water inlet pipe (22) is mounted on the bottom side of one end of the fixed shell (1), the water outlet pipe (24) is mounted on the bottom side of the other end of the fixed shell (1), and the water inlet pipe (22) and the water outlet pipe (24) respectively penetrate through the fixed shell (1) and are communicated with the interior of the placing box (21); the handles (23) are respectively installed on two sides of the top of the placing box (21), and the handles (23) are of cylindrical structures;

the control mechanism (3) comprises a cover plate (31), a placing groove (32), a valve (33), a bolt (34) and a guide groove (35), the placing groove (32) is arranged inside the placing box (21), and two sides of the placing groove (32) respectively extend to the outer parts of two sides of the placing box (21); the valve (33) is detachably connected with the bottom of the placing box (21) through a plurality of bolts (34), and the guide grooves (35) which are symmetrically distributed are respectively arranged inside two ends of the placing box (21); the two ends of the valve (33) are respectively communicated with the guide grooves (35), the cover plate (31) is installed at the top of the placing box (21), and one end of the cover plate (31) is rotatably connected with the top of the placing box (21);

the telescopic mechanism (5) comprises a leather pad (51), a telescopic spring (52) and sliding rods (53), the sliding rods (53) are symmetrically arranged on the bottom sides of the two ends of the inside of the fixed shell (1) respectively, and the sliding rods (53) are of a cylindrical structure with a hollow inside; the bottom of one of the slide bars (53) is communicated with the water outlet pipe (24), and the bottom of the other slide bar (53) is communicated with the water inlet pipe (22); the two sliding rods (53) are respectively connected with the insides of the two ends of the placing box (21) in a sliding manner, and the leather pads (51) are respectively arranged on the tops of the two sliding rods (53); the telescopic springs (52) are respectively installed on the outer sides of the two sliding rods (53), and the tops of the two sliding rods (53) are respectively communicated with the tops of the two guide grooves (35);

the limiting mechanism (6) comprises a pull rod (61), a lock catch (62), a butting spring (63), a protrusion (64), a lock groove (65) and a return spring (66), the pull rod (61) is respectively installed inside two ends of the placing box (21), and the top of the pull rod (61) is connected with the handle (23); the return springs (66) are respectively installed on one side of the bottoms of the two pull rods (61), and the pull rods (61) are in sliding connection with the inner part of the placing box (21) through the return springs (66); one side of the bottoms of the two pull rods (61) is of an arc-shaped structure, the inner sides of the bottoms of the two ends of the placing box (21) are respectively provided with the lock catches (62), and the lock catches (62) are of L-shaped structures; a plurality of abutting springs (63) are mounted on one side of the lock catch (62), and the lock catch (62) is in sliding connection with the inside of the placing box (21) through the abutting springs (63); the inner sides of the bottoms of the two ends of the fixed shell (1) are respectively provided with the locking groove (65), and the bottom of the other side of the lock catch (62) penetrates through the placing box (21) and extends to the inside of the locking groove (65); the opposite side bottom one end of hasp (62) is the triangle-shaped structure, install the opposite side top of hasp (62) protruding (64), just protruding (64) with bottom one side of pull rod (61) is contradicted.

2. The underground valve convenient for cleaning scraps as claimed in claim 1, wherein: the fastening mechanism (7) comprises clamping blocks (71) and an extrusion spring (72), a plurality of clamping blocks (71) which are distributed at equal intervals are respectively installed inside the side walls of the two ends of the fixed shell (1), and one ends of the clamping blocks (71) extend to the outside of the fixed shell (1); the side wall of the other end of the clamping block (71) is provided with a plurality of extrusion springs (72), and the clamping block (71) is connected with the inside of the side wall of the fixed shell (1) in a sliding mode through the extrusion springs (72); the fixture block (71) is of a rectangular structure, and one end of the fixture block (71) is of a right-angled trapezoid structure.

3. The underground valve convenient for cleaning scraps as claimed in claim 1, wherein: the locking mechanism (4) comprises pull buckles (41), bayonet pins (42), compression springs (43) and clamping grooves (44), the pull buckles (41) are respectively installed on two sides of the inner portion of the other end of the cover plate (31), the compression springs (43) are respectively installed on one sides of the two pull buckles (41), and the pull buckles (41) are connected with the inner portion of the cover plate (31) in a sliding mode through the compression springs (43); the clamping pins (42) are respectively arranged on the other sides of the two pull buckles (41), and the clamping pins (42) are connected with the inner part of the cover plate (31) in a sliding manner through the pull buckles (41); the inside both sides of placing box (21) are equipped with respectively draw-in groove (44), two bayonet lock (42) one end respectively with draw-in groove (44) is inside contradicts, two the one end of bayonet lock (42) is the triangle-shaped structure.