CN114733389A

CN114733389A - Heavy metal soil remediation mixer

Info

Publication number: CN114733389A
Application number: CN202210459947.3A
Authority: CN
Inventors: 国强; 朱守国
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-12

Abstract

The utility model provides a heavy metal soil mixer, including the agitator, blade subassembly and four access doors, the blade subassembly includes the blade pivot, eight sets of blades, set up in the inside steel cable of blade pivot and set up in the indicator of blade pivot tail end, wherein the blade includes the blade arm, the stirring leaf and set up in the inside cable locking seat of blade arm, the indicator is including fixed shell, the moving member, the prevention key, voussoir locking mechanism and release mechanism, the moving member can be under the traction of steel cable from normal position A to abnormal position B, and prevent strong can remove the locking with the moving member through release mechanism at abnormal position B. The blade breaking point in the stirrer can be quickly judged, the blade at the position can be quickly repaired only by opening the access door at the corresponding position indicated by the indicator and cleaning the filling soil at the position, and the filling soil in the whole barrel does not need to be clear.

Description

Heavy metal soil remediation mixer

Technical Field

The invention relates to a soil remediation device, in particular to a heavy metal soil remediation stirrer.

Background

In the prior art, soil to be repaired is mostly repaired by spraying or doping a chemical modifier or a microbial reagent, so that the soil after being added with the chemical needs to be stirred for a long time. Because the restored soil is often caked and hardened to form a larger soil block, and the particle degrees of different soils are different, a longer stirring barrel is often needed, so that the soil and the modifying agent can be fully mixed.

For a horizontal cylinder leaching stirrer with a long size, a stirring blade in the stirrer bears a large stress alternating load for a long time, and in addition, the influence of a humid corrosive environment of a repairing agent in a barrel, the stirring blade in the leaching stirrer is often subjected to waste breakage, and after breakage, because the machine cannot be stopped in time, adjacent blades or leaching equipment are often damaged. Moreover, because the cylinder is filled with the filled soil, the breaking point can be accurately positioned after all the soil in the barrel is usually removed. The cleaning work of the soil greatly reduces the use efficiency of the leaching stirrer, and the maintenance time is too long each time.

Therefore, in order to quickly judge the breaking point of the blade in the stirrer and reduce the maintenance time, a novel heavy metal soil remediation stirrer needs to be designed.

Disclosure of Invention

The invention aims to provide a heavy metal soil remediation stirrer to solve the technical problem that the blade breaking point cannot be judged quickly in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a heavy metal soil mixer, its characterized in that includes: the stirring barrel, the blade assembly and the four access doors are arranged; the blade assembly comprises a blade rotating shaft, eight groups of blades, a steel cable arranged in the blade rotating shaft and an indicator arranged at the tail end of the blade rotating shaft; the blade comprises a blade arm, a stirring blade and a steel cable locking seat arranged in the blade arm; the indicator comprises a fixed shell, a moving piece, a stop key, a wedge locking mechanism and a release mechanism; one end of the steel cable is connected to the steel cable locking seat, and the other end of the steel cable is connected to the moving piece through the wedge locking mechanism; the fixed shell is divided into a normal position A and an abnormal position B, the moving piece can move from the normal position A to the abnormal position B under the traction of the steel cable, and the stopping key can unlock the steel cable and the moving piece through the releasing mechanism in the abnormal position B.

Preferably, each access door corresponds to two adjacent groups of blades, the blades are provided with No. 1-8 eight groups of blades from left to right, the indicator is provided with No. 1-4 four indicating structures corresponding to the number and sequence of the access doors, and the No. 1-4 indicating structures are sequentially connected in series from left to right.

Preferably, the fixed shell is of a hollow cylindrical shell structure and is fixedly connected to the tail end of the blade rotating shaft; the fixed shell is provided with a moving groove along the axis direction, and moving parts are arranged in the fixed shell in a sliding connection mode; be provided with the bulge on the moving member, the bulge sets up in the shifting chute, and the bulge stretches out fixed shell through the shifting chute to the bulge can move along the shifting chute, and the tail end of the steel cable that adjacent two sets of blades stretched out all connects on the moving member.

Preferably, the inner wall of the fixed shell is provided with a wedge-shaped stopping key, a compression spring is arranged between the stopping key and the fixed shell, the moving piece is provided with a left clamping groove and a right clamping groove which are matched with the stopping key in shape, and the clamping grooves at the left position and the right position limit a normal position A and an abnormal position B which are distinguished by the protruding part relative to the fixed shell.

Preferably, a fixed channel is arranged along the axial direction of the moving element, a fixed counter bore is formed in the tail end of the fixed channel, the aperture of the fixed counter bore is larger than that of the fixed channel, a steel column is arranged at the tail end of the steel cable, the diameter of the steel column is in clearance fit with the aperture of the fixed channel, a clamping plate is sleeved at the tail end of the steel column and connected with the steel column through a release mechanism, a pair of a first wedge block and a second wedge block which are nested with each other is arranged in the fixed counter bore, the second wedge block is tightly attached to the fixed counter bore, the first wedge block is connected with the second wedge block, the steel column is clamped in the first wedge block, and one side end face of the clamping plate abuts against the first wedge block.

Preferably, the releasing mechanism comprises a steel wire rope, a stay wire, a steel ball and a locking sleeve, a stay wire fixing hole is formed in the position, relative to the right clamping groove, of the moving member, one end of the stay wire fixing hole is communicated with the right clamping groove, the other end of the stay wire fixing hole is communicated with the right end face of the moving member, a stay wire outer sleeve of the stay wire is arranged in the stay wire fixing hole, a movable steel wire rope is arranged inside the stay wire, one end of the steel wire rope stretches out of the stay wire fixing hole and stretches across the right clamping groove, then the steel wire rope is fixed on the groove wall face of the clamping groove, and the other end of the stay wire is connected to the locking sleeve.

Preferably, steel ball containing holes are formed in the upper side and the lower side of the clamping plate, radial through holes are formed in the steel column, the diameter of each through hole is smaller than that of each steel ball containing hole, the diameter of each steel ball containing hole is consistent with the outer diameter of each steel ball, each steel ball is contained in each steel ball containing hole, the outer diameter of each steel ball is larger than the depth of each steel ball containing hole, and the steel ball containing holes are in coaxial butt joint with the through holes.

Preferably, the locking cover comprises rotating ring and retainer plate, and the rotating ring is located the retainer plate inside and can rotate by relative retainer plate, and the inner wall of rotating ring hugs closely in the outer wall of cardboard, is provided with the removal hole on rotating ring, and the aperture in removal hole is the same with the aperture of steel ball accommodation hole, and wire rope can drive rotating ring and produce the rotation to make the removal hole on the rotating ring just to above the steel ball accommodation hole, thereby make the steel ball have the removal space of outside removal.

Preferably, a semicircular wire drawing groove is formed in the fixing ring, the other end of the steel wire rope is arranged inside the wire drawing groove, a protrusion is arranged on the periphery of the rotating ring and can slide in the wire drawing groove, one side of the protrusion is connected with the fixing ring through an extension spring, the other side of the protrusion is connected with the steel wire rope, and the extension spring can enable the rotating ring to be kept at the position for closing the steel ball containing hole through pulling the protrusion.

Preferably, the blade pivot is provided with the structure that turns to that is used for the steel cable to turn to, turns to the structure and includes directive wheel, gasket, adjusting bolt and steering wheel seat, and on the blade pivot, the position that corresponds every blade arm is provided with the through-hole, and every steel cable is walked around the directive wheel that corresponds, then stretches out the back from the through-hole and is connected to the steel cable locking seat that corresponds the blade, and the one end that is close to the indicator more, the gasket height that turns to the structure of the steel cable that every group of blade corresponds is littleer.

The invention has the beneficial effects that:

1. through set up the steel cable in the stirring vane in the agitator to set up indication structure in the blade pivot, make the fracture of blade can drive the removal of steel cable, thereby make the fracture of blade embody on the indicator, can observe the position of fracture blade through the indicator.

2. Through the setting of directive wheel, gasket, adjusting bolt and directive wheel seat, guarantee the independence of every steel cable, that is to say that the quilt pulling of every steel cable is mutually independent, can not influence the position of other steel cables after a steel cable is pulled.

3. Through the arrangement of the wedge block locking mechanism and the release mechanism, the steel cable and the moving piece can be locked in a normal state; under abnormal conditions, the prevention key gets into right position draw-in groove, and the prevention key can push down the wire rope that spanes on the draw-in groove, and the wire rope that is pulled can drive the rotation circle and produce and rotate to make the removal hole on the rotation circle just to above the steel ball accommodation hole, thereby make the steel ball have the removal space of outside removal, thereby make the locking of steel rope and moving member release, guaranteed after the blade fracture, the instruction structure can not damaged by the tearing of steel rope.

Drawings

FIG. 1 is a schematic illustration of a soil mixer of the present application;

FIG. 2 is a schematic view of the soil mixer of the present application;

FIG. 3 is a structure of the blade assembly of the present application;

FIG. 4 is a schematic high-level view of a reverser wheel shim of the present application;

FIG. 5 is a schematic view of the indicator structure of the present application;

FIG. 6 is a schematic view of the indicator structure of the present application in the normal position;

FIG. 7 is a schematic view of the indicator structure of the present application in an abnormal position;

FIG. 8 is a schematic view of the wire rope release and lock mechanism of the present application;

FIG. 9 is a schematic view of the wire rope release and lock mechanism of the present application;

fig. 10 is a schematic view of a pull wire release mechanism of the present application.

Detailed Description

The following detailed description of the preferred embodiments will be made with reference to the accompanying drawings.

Fig. 1 is a schematic view of the soil mixer of the present application. This heavy metal soil mixer includes agitator 1 and at 1 internal rotation's of agitator blade subassembly 2. The blade assembly 2 includes a blade rotation shaft 21 and a blade 22. In order to maintain the stirring barrel conveniently, the four access doors 3 are arranged on the stirring barrel, and each access door 3 corresponds to two adjacent groups of blades 22, so that when the blades at the corresponding positions are identified to be damaged, the access doors at the corresponding positions only need to be opened to clean the filling soil at the positions, the blades at the positions can be quickly repaired, and the filling soil in the whole barrel does not need to be clear.

Fig. 2 shows the structure of the blade assembly 2 of the present application. The blade assembly 2 includes a blade rotating shaft 21, a blade 22, a wire cable 23 disposed inside the blade rotating shaft 21, and an indicator 24 disposed at the tail end of the blade rotating shaft. Eight groups of 1-8 blades are arranged on the blades 22 from left to right, each group of blades 22 is arranged on the blade rotating shaft 21 at equal intervals, each group of blades 22 is provided with four blades 22, and the four blades 22 are uniformly distributed along the circumferential direction of the blade rotating shaft. Blade pivot 21 is hollow structure, and a plurality of steel cables 23 are arranged inside blade pivot 21, and the figure of steel cable 23 and the number one-to-one of blade 22, every steel cable 23 one end are connected inside blade 22, and the other end is connected in indicator 24, and when a blade 22 breaks off, can stimulate steel cable 23 rather than being connected, and indicator 24 can be stimulates to steel cable 23 to remind maintenance and site personnel to take place the blade fracture, carry out emergency shutdown operation.

Fig. 3 is a schematic view showing a connection structure of the wire rope 23 and the blade 22. As shown in fig. 3, each blade 22 has a hollow structure, and the blade 22 includes a blade arm 221, a stirring blade 222, and a cable locking seat 223 provided inside the blade arm. The blade arm 221 has a hollow structure, the trailing end of the blade arm 221 is welded and fixed to the outer periphery of the blade rotating shaft 21, the stirring blade 222 is welded and fixed to the head of the blade arm 221, and a cable locking seat 223 is provided at the connecting position of the stirring blade 222 and the blade arm 221. The blade rotating shaft 21 is provided with a through hole 215 corresponding to a hollow position of each blade arm 221, and one end of the wire rope 23 is extended out of the blade rotating shaft 21 through the through hole 215 and is fixedly connected to the wire rope locking seat 223, so that the wire rope 23 is pulled when any part of the cylinder blade 22 is broken. On one side of the through hole 215, a steering structure for steering the wire rope is provided, and the steering structure includes a steering wheel 212, a spacer 211, an adjusting bolt 214, and a steering wheel seat 213. The steering wheel 212 is positioned right below the through hole 215, and the steering wheel 212 is rotatably connected to the steering wheel fixing seat 213. A plurality of gaskets are arranged between the steering wheel fixing seat 213 and the inner wall of the blade rotating shaft 21, and are fixed on the inner wall of the blade rotating shaft 21 through adjusting bolts 214. Each wire rope 23 is positioned inside the blade rotary shaft 21, passes around the corresponding steering wheel 212, and then is connected to the corresponding blade 22 after protruding from the through hole 215.

In order to guarantee the independence of every steel cable 23, that is to say that being pulled of every steel cable 23 is mutually independent, can not influence the position of other steel cables after a steel cable is pulled, for this reason, this application has set up the gasket 211 structure, through the setting of gasket 211 for along blade pivot 21 axial direction, the rigidity of the relative blade pivot 21 inner arm of steel cable 23 that every group blade corresponds is different. Specifically, as shown in fig. 4, the closer the present application is disposed to one end of the indicator 24, the smaller the spacer height of the turning structure of the wire rope 23 corresponding to each set of blades. Assume that the turning structure shim height of the first set of blades 22 at the far left end (the end furthest from the indicator 24) is H₁The rightmost (the end closest to the indicator 24) Nth set of blades 22 has a turning structure shim height H_NThen H is₁>H₂>……>H_N。

As mentioned above, four access doors 3 are arranged on the mixing tank, each access door 3 corresponds to two adjacent groups of blades 22, and the blades 22 have eight groups of blades No. 1-8 from left to right. In order to instruct the corresponding access door 3 to be opened by the indicator 24, as shown in fig. 5, the indicator 24 of the present application is provided with four indicating structures 1 to 4 corresponding to the number and sequence of the access doors, and the four indicating structures 1 to 4 241 are sequentially connected in series from left to right. The steel cable 23 connected with the No. 1-2 blade group is connected with the No. 1 indicating structure 241, the steel cable 23 connected with the No. 3-4 blade group is connected with the No. 2 indicating structure 241 after passing through the No. 1 indicating structure, the steel cable 23 connected with the No. 5-6 blade group is connected with the No. 3 indicating structure 241 after passing through the No. 1-2 indicating structure, and the steel cable 23 connected with the No. 7-8 blade group is connected with the No. 4 indicating structure 241 after passing through the No. 1-3 indicating structure.

As shown in fig. 6, is a schematic diagram of an indicating structure 241. As shown in fig. 6, the indicating structure 241 includes a fixed housing 2411, a moving member 2412, and a blocking key 2413. The fixed housing 2411 has a hollow cylindrical housing structure, is fixedly connected to the tail end of the blade rotating shaft 21, and is provided with a moving groove 2416 along the axial direction on the fixed housing 2411. Inside the fixed housing 2411, a moving member 2412 is slidably connected, a protruding part 2415 is provided on the moving member 2412, the protruding part 2415 is provided in a moving groove 2416, the protruding part 2415 protrudes out of the fixed housing 2411 through the moving groove 2416, and the protruding part 2415 can move along the moving groove 2416. The tail ends of the steel cables 23 extending from the two adjacent groups of blades 22 are connected to the moving piece 2412, when the blades 22 break, one of the steel cables 23 moves to pull the moving piece 2412 to move, and the protruding part 2415 extends out of the fixed shell 2411, so that the maintenance and field personnel can observe the movement of the protruding part 2415 to judge that the blade at the corresponding position breaks, and stop the machine. Therefore, the protrusion 2415 serves to guide the moving member 2412, and serves to indicate the breakage of the blade 22.

In order to clearly distinguish and limit the moving position of the moving member 2412, a wedge-shaped stopping key 2413 is arranged on the inner wall of the fixed shell 2411, a compression spring is arranged between the stopping key 2413 and the fixed shell 2411, and meanwhile, a left group of clamping grooves 2414 and a right group of clamping grooves 2414 matched with the stopping key 2413 in shape are arranged on the moving member 2412. The blocking key 2413 is clamped inside the left slot 2414 of the moving member 2412 in a normal state that the blade is not broken and the steel cable 23 is not moved. When the moving member 2412 is pulled by the steel cable 23 to move leftward, the blocking key 2413 is compressed and then bounces into the slot 2414 at the right position of the moving member 2412. Thus, by the arrangement of the card slot 2414 and the blocking key 2413 in the two right and left positions, the projecting portion 2415 is defined to have two indication positions of normal a and abnormal B with respect to the moving slot 2416. The indicating structure of the protrusion 2415 at the normal a position and the abnormal B position is shown in fig. 6-7.

Specifically, at the central axis of each moving member 2412, a central passage 2416 is provided for the cable 23 of the remaining blades to pass through.

As shown in fig. 7, the moving member 2412 is pulled by the steel cable 23 to enter the abnormal B position, and the indicator is shifted and stopped by maintenance or field personnel, and this process cannot guarantee that the blade assembly 2 stops rotating immediately, so that after the blade is broken, the broken blade 22 will still move under the soil entrapment, and the steel cable 23 connected with the broken blade will still pull the moving member 2412 to move to the left, which will result in the damage of the indicating structure 241. Therefore, it is necessary to design the connection mechanism between the steel cable 23 and the moving member 2412 so that the moving member 2412 can be pulled to move left by one position when the blade is broken to prompt the maintenance personnel, and then the connection between the moving member 2412 and the steel cable 23 is released under the subsequent high tension condition.

As shown in fig. 8 to 10, the connection mechanism of the steel cable 23 and the moving member 2412 provided for the present application to solve the above technical problem mainly includes a wedge locking mechanism 25 and a release mechanism 26. As shown in fig. 8-9, a fixing channel 2417 for connecting each steel cable 23 is provided along the axial direction of the moving member 2412, and a fixing counterbore 2418 is provided at the tail end of the fixing channel 2417, and the bore diameter of the fixing counterbore 2418 is larger than that of the fixing channel 2417. The tail end of the steel cable 23 is provided with a steel column 231, and the diameter of the steel column 231 is in clearance fit with the aperture of the fixed channel 2417. The clamping plate 253 is sleeved at the tail end of the steel column 231, the clamping plate 253 is connected with the steel column 231 through the release mechanism 26, a pair of mutually nested wedges I251 and a wedge II 252 are arranged in the fixing counter bore 2418, the wedge II 252 is tightly attached to the fixing counter bore 2418, the wedge I251 is connected in the wedge II 252, the steel column 231 is clamped in the wedge I251, and one side end face of the clamping plate 253 abuts against the wedge I251. When the steel cable 23 is initially pulled, due to the locking of the release mechanism 26, the locking plate 253 is locked and connected with the steel column 231, the steel column 231 drives the locking plate 253 to move to the left, and then the locking plate 253 drives the wedge block one 251 to clamp the steel column 231 under the action of the wedge block two 252, so that the steel cable 23 drives the moving member 2412 to move to the left.

In order to release the connection between the wire rope 23 and the moving member 2412 after the moving member 2412 enters the abnormal B position, a release mechanism 26 is further provided. Fig. 9-10 illustrate the structure of the release mechanism 26. When the moving part 2412 enters the abnormal position B, it indicates that the blocking key 2413 enters the right slot 2414. The release mechanism 26 includes a wire cable 261, a pull wire 262, a steel ball 263, and a locking sleeve 264. Wherein, the position of the moving member 2412 relative to the right clamping groove 2414 is provided with a stay wire fixing hole 2419, one end of the stay wire fixing hole 2419 is communicated with the right clamping groove 2414, the other end is communicated with the right end face of the moving member 2412, and the stay wire jacket of the stay wire 262 is arranged in the stay wire fixing hole 2419. A movable wire rope 261 is provided inside the pulling wire 262. One end of the wire rope 261 stretches out from the wire fixing hole 2419, crosses over the right slot 2414, and is fixed on the wall surface of the slot 2414, and the other end is connected to the locking sleeve 264 through the wire 262. The other end of the pull wire 262 extends out of the right end face of the moving member 2412 of the pull wire fixing hole 2419 and is finally connected to the locking sleeve 264. The locking sleeve 264 is sleeved outside the clamping plate 253, and a steel ball 263 is arranged between the clamping plate 253 and the steel column 231. And the clamping plate 253 is connected with the steel column 231 in a locking way through clamping of the steel column 263. In a normal state, the locking sleeve 264 limits the movement of the steel ball 263, so that the clamping plate and the steel column 231 are locked; under an abnormal state, the blocking key 2413 enters the right clamping groove 2414, the blocking key 2413 presses down the steel wire rope 261 stretching over the clamping groove 2414, the pulled steel wire rope 261 drives the locking sleeve 264 to rotate, so that the steel ball 263 is unlocked, the locking between the clamping plate 253 and the steel column 231 is unlocked, the steel cable 23 under the action of a large pulling force pulls the steel column 231 to pass through the fixed channel 2417, the release between the steel cable 23 and the moving part 2412 is realized, and the damage to the indicating structure 241 is avoided.

Fig. 10 is a schematic view showing a locking and releasing structure of the locking sleeve of the present application. The locking sleeve 264 is sleeved on the periphery of the clamping plate 253. Steel ball accommodating holes 2531 are formed in the upper side and the lower side of the clamping plate 253, radial through holes 2311 are formed in the steel column 231, the diameter of each through hole 2311 is smaller than that of each steel ball accommodating hole 2531, the diameter of each steel ball accommodating hole 2531 is consistent with the outer diameter of each steel ball 263, each steel ball 263 is accommodated in each steel ball accommodating hole 2531, and the outer diameter of each steel ball 263 is larger than the depth of each steel ball accommodating hole 2531. In a normal state, the steel ball receiving hole 2531 is coaxially abutted with the through hole 2311, because the outer diameter of the steel ball 263 is larger than the depth of the steel ball receiving hole 2531, the locking sleeve 264 is sleeved on the periphery of the clamping plate 253, and the steel ball 263 partially extends into the space of the through hole 2311, but because the aperture of the through hole 2311 is smaller than that of the steel ball receiving hole 2531, the movement of the steel ball 263 is locked, and therefore the clamping plate 253 and the steel column 231 are locked through the steel ball 263 in the normal state.

The locking sleeve 264 is composed of a rotating ring 2641 and a fixing ring 2642, and the rotating ring 2641 is located inside the fixing ring 2642 and can rotate relative to the fixing ring 2642. The inner wall of the rotating ring 2641 abuts against the outer wall of the catch plate 253. A moving hole 2646 is provided in the rotating ring 2641, and the diameter of the moving hole 2646 is the same as that of the ball receiving hole 2531. In a normal state, the inner wall of the rotating ring 2641 blocks the outer side of the steel ball accommodating hole 2531 to limit the movement of the steel ball 263; when the key 2413 is prevented from entering the right slot 2414, the wire rope 261 spanning the slot 2414 is pressed downwards, the pulled wire rope 261 drives the rotating ring 2641 to rotate, so that the moving hole 2646 on the rotating ring 2641 is just over the steel ball accommodating hole 2531, and the steel ball 263 has a moving space moving outwards, and when the steel cable 23 continues to pull the steel column 231, the steel ball 263 is forced to move upwards into the space of the moving hole 2646, so that the steel column 231 can be unlocked from the clamping plates 253.

A semi-annular wire drawing slot 2643 is disposed on the fixing ring 2642, the other end of the wire rope 261 is disposed inside the wire drawing slot 2643, a protrusion 2644 is disposed on the outer circumference of the rotating ring 2641, and the protrusion 2644 can slide in the wire drawing slot 2643. One side of the protrusion 2644 is connected to the fixing ring 2642 through an extension spring 2645, and the other side is connected to the wire rope 261. Under normal conditions, the tension spring 2645 will keep the rotating ring 2641 in a position to close the ball receiving bore 2531 by pulling on the projection 2644.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a heavy metal soil mixer which characterized in that includes: the stirring barrel, the blade assembly and the four access doors are arranged; the blade assembly comprises a blade rotating shaft, eight groups of blades, a steel cable arranged in the blade rotating shaft and an indicator arranged at the tail end of the blade rotating shaft; the blade comprises a blade arm, a stirring blade and a steel cable locking seat arranged in the blade arm; the indicator comprises a fixed shell, a moving piece, a stop key, a wedge locking mechanism and a release mechanism; one end of the steel cable is connected to the steel cable locking seat, and the other end of the steel cable is connected to the moving piece through the wedge block locking mechanism; the fixed shell is divided into a normal position A and an abnormal position B, the moving piece can move from the normal position A to the abnormal position B under the traction of the steel cable, and the stopping key can unlock the steel cable and the moving piece through the releasing mechanism at the abnormal position B.

2. The heavy metal soil mixer of claim 1, wherein: every access door corresponds adjacent two sets of blades, and the blade has eight sets of blades 1-8 from a left side to the right side, and the indicator has set up four instruction structures 1-4 that correspond with access door number and order, and 1-4 instructs the structure and connects gradually the series connection from a left side to the right side.

3. The heavy metal soil mixer of claim 2, wherein: the fixed shell is of a hollow cylindrical shell structure and is fixedly connected to the tail end of the blade rotating shaft; the fixed shell is provided with a moving groove along the axis direction, and moving parts are arranged in the fixed shell in a sliding connection mode; the movable piece is provided with a protruding part, the protruding part is arranged in the moving groove, the protruding part extends out of the fixed shell through the moving groove and can move along the moving groove, and the tail ends of the steel cables extending out of the two adjacent groups of blades are connected to the movable piece.

4. The heavy metal soil mixer of claim 3, wherein: the inner wall of the fixed shell is provided with a wedge-shaped stopping key, a compression spring is arranged between the stopping key and the fixed shell, the moving piece is provided with a left group of clamping grooves and a right group of clamping grooves matched with the shape of the stopping key, the clamping grooves at the left position and the right position limit a normal position A and an abnormal position B which are distinguished on the projecting part relative to the fixed shell.

5. The heavy metal soil mixer of claim 4, wherein: be provided with fixed passage along the moving member axial, tail end at fixed passage has fixed counter bore, the aperture of fixed counter bore is greater than fixed passage's aperture, the tail end of steel cable is provided with the steel column, the diameter of steel column and fixed passage's aperture clearance fit, steel column tail end cover is equipped with the cardboard, be connected through release mechanism between cardboard and the steel column, be provided with a pair of nested voussoir one and voussoir two each other in fixed counter bore, wherein fixed counter bore is hugged closely to voussoir two, voussoir two in-connection voussoir one, the tight steel column of clamp in the voussoir one, a side end butt of cardboard is on voussoir one.

6. The heavy metal soil mixer of claim 5, wherein: the releasing mechanism comprises a steel wire rope, a pull wire, a steel ball and a locking sleeve, wherein a pull wire fixing hole is formed in the position, relative to the right clamping groove, of the moving member, one end of the pull wire fixing hole is communicated with the right clamping groove, the other end of the pull wire fixing hole is communicated with the right end face of the moving member, a pull wire outer sleeve of the pull wire is arranged in the pull wire fixing hole, a movable steel wire rope is arranged inside the pull wire, one end of the steel wire rope stretches out of the pull wire fixing hole and stretches across the right clamping groove, then the steel wire rope is fixed on the groove wall face of the clamping groove, and the other end of the steel wire rope is connected to the locking sleeve through the pull wire.

7. The heavy metal soil mixer of claim 6, wherein: the steel ball containing hole is formed in the upper side and the lower side of the clamping plate, a radial through hole is formed in the steel column, the diameter of the through hole is smaller than that of the steel ball containing hole, the diameter of the steel ball containing hole is consistent with the outer diameter of the steel ball, the steel ball is contained in the steel ball containing hole, the outer diameter of the steel ball is larger than the depth of the steel ball containing hole, and the steel ball containing hole is in coaxial butt joint with the through hole.

8. The heavy metal soil mixer of claim 7, wherein: the locking cover comprises rotating ring and retainer plate, and the rotating ring is located the retainer plate inside and can rotate relative to the retainer plate, and the inner wall of rotating ring hugs closely in the outer wall of cardboard, is provided with the shifting hole on rotating ring, and the aperture in shifting hole is the same with the aperture of steel ball accommodation hole, and wire rope can drive rotating ring and produce the rotation to make the shifting hole on the rotating ring just to above the steel ball accommodation hole, thereby make the steel ball have the removal space of outside removal.

9. The heavy metal soil mixer of claim 8, wherein: be provided with semicircular trombone slide groove on the stationary ring, wire rope's the other end sets up inside the trombone slide groove, is provided with a arch in the periphery that rotates the circle, and the arch can slide in the trombone slide groove, and bellied one side is connected with the stationary ring through extension spring, and the opposite side is connected with wire rope, and extension spring can make through the pulling arch and rotate the circle and keep in the position of sealing steel ball accommodation hole.

10. The heavy metal soil mixer of claim 9, wherein: the blade pivot is provided with the structure that turns to that is used for the steel cable to turn to, turns to the structure and includes directive wheel, gasket, adjusting bolt and directive wheel seat, and on the blade pivot, the position that corresponds every blade arm is provided with the through-hole, and every steel cable is walked around the directive wheel that corresponds, then stretches out the back from the through-hole and is connected to the steel cable locking seat that corresponds the blade, is close to the one end of indicator more, and the gasket height that turns to the structure of the steel cable that every group blade corresponds is littleer.