CN116536086A - A compound coal-water slurry device prepared by mixing landfill leachate and coal powder - Google Patents

Abstract

The invention relates to the technical field of landfill leachate treatment coupling clean coal, in particular to a device for preparing composite water-coal-slurry by mixing landfill leachate and coal dust, which comprises a scraping component, a stirring barrel part and a scraping part, wherein the scraping component comprises the stirring barrel part and is used for scraping the inner wall of the stirring barrel part; the feeding assembly comprises an upper cover piece positioned on the stirring barrel piece, a supporting piece fixed on the upper cover piece and a feeding piece fixed on the upper cover piece. The invention controls the stirring piece to work, and the stirring piece works to stir the concentrated landfill leachate; the stirring piece works to enable the scraping piece to work, and the scraping piece works to scrape the inner wall of the stirring barrel piece, so that part of reactants are prevented from adhering to the inner wall; the stirring piece work still makes the material loading piece work, and the material loading piece work makes buggy in the material loading piece, wooden sodium sulfonate fall into in the agitator spare gradually for a plurality of to make landfill leachate, buggy and wooden sodium sulfonate by intensive mixing.

Description

A compound coal-water slurry device prepared by mixing landfill leachate and coal powder

technical field

The invention relates to the technical field of landfill leachate disposal coupled with clean coal, in particular to a composite coal-water slurry device prepared by mixing landfill leachate and coal powder.

Background technique

Landfill leachate refers to the water contained in the landfill itself, the rain and snow water infiltrated from the surface, which is formed through the garbage layer and soil layer, and contains a large amount of suspended solids and high concentrations of organic and inorganic components. Organic pollutants in landfill leachate mainly include organic heterocycles (heterocycles, polycyclic aromatic hydrocarbons), acid lipids, amides, etc., accounting for more than 70% of the total organic components of landfill leachate; inorganic pollutants include A large amount of inorganic salts, heavy metals, ammonia nitrogen memory chlorinated organic compounds and other refractory pollutants.

Some of the existing treatment methods are to prepare landfill leachate, coal, and dispersant in a certain proportion to form landfill leachate composite coal-water slurry, and perform gasification reaction, so as to achieve efficient and safe disposal of landfill leachate; coupling landfill leachate pretreatment and disposal The gasification and utilization of coal water slurry can obtain high-value gas and carbon materials, and the chelation of heavy metals and carbon in landfill leachate has been effectively solidified.

However, the existing landfill leachate pretreatment stirring device often directly puts in materials when mixing and stirring, and directly putting in the stirring will easily lead to a slow mixing evenly, which affects the pretreatment efficiency of landfill leachate, and there are also problems in mixing. If it is sufficient, it will affect the subsequent gasification process.

Contents of the invention

The purpose of this section is to outline some aspects of embodiments of the invention and briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and titles of this application, to avoid obscuring the purpose of this section, abstract and titles, and such simplifications or omissions should not be used to limit the scope of the invention.

In view of the problems existing in the above-mentioned existing landfill leachate mixed with coal powder to prepare a composite coal-water slurry device, the present invention is proposed.

Therefore, the object of the present invention is to provide a compound coal-water slurry device prepared by mixing landfill leachate and coal powder.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions: a compound coal-water slurry device prepared by mixing landfill leachate and coal powder, including a scraping assembly, including a mixing bucket for scraping the mixing bucket The scraper of the inner wall; the feeding assembly, including the upper cover on the mixing bucket, the support fixed on the upper cover, and the feeding member fixed on the upper cover; and , a stirring assembly, including a stirring piece embedded in the middle of the upper cover, a lifting piece for controlling the height of the stirring piece, and a bracket for supporting the lifting piece; wherein, the scraping piece passes through The bearing is fixed on the upper cover part; the stirring part penetrates the support part and the upper cover part and then extends into the mixing barrel part.

As a preferred solution of the compound type coal-water slurry device prepared by mixing landfill leachate and coal powder in the present invention, wherein: the mixing tank part includes a mixing tank, and a mixing chamber is provided on the inside of the mixing tank; A first support ring is provided on the inner wall of the barrel; a second support ring is also provided on the lower side of the first support ring on the inner wall of the mixing barrel.

As a preferred solution of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder in the present invention, wherein: the scraper includes a first connecting rod, and one end of the first connecting rod is provided with a first Gear, the other end of the first connecting rod is provided with a second gear, the first connecting rod is fixed on the upper cover through a bearing; the outer side of the first gear is meshed with an inner gear ring, and the inner gear ring The first support ring is rotated and embedded in the inner wall of the mixing bucket; the lower side of the inner gear ring is provided with several round rods; the wiper also includes a wiper strip, and the wiper strip passes through the second support ring The rotation is embedded in the inner wall of the mixing bucket; there are several L-shaped brackets on the inner side of the scraper, and the round rod is embedded in the L-shaped bracket; the scraper also includes a connection on the second gear. plate, and the connecting plate is provided with a short rod.

As a preferred solution of the mixed landfill leachate and coal powder of the present invention to prepare a composite coal-water slurry device, wherein: the upper cover includes an upper cover plate, and a group of feeding ports are opened on the upper cover plate; The upper cover is also slidably provided with a movable drawing plate; the upper cover is clamped and embedded on the mixing barrel.

As a preferred solution of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder in the present invention, wherein: the support includes a support column, and a first ring is arranged on the support column, and the first circular ring is arranged on the support column. One side of the first ring is provided with a second ring.

As a preferred solution of the mixed landfill leachate and coal powder of the present invention to prepare a composite coal-water slurry device, wherein: the feeding part includes a feeding cylinder, and a group of feeding pipes are arranged on the outside of the feeding cylinder ; The feeding part also includes a baffle that is embedded in the feeding cylinder, the upper end of the baffle is located on the upper side of the feeding cylinder and is connected to one end of the second connecting rod, and the other end of the second connecting rod There is also a push plate, the short rod can drive the push plate to rotate; the outside of the second connecting rod is provided with a slewing ring, and the outside of the second connecting rod is located between the slewing ring and the feeding cylinder. ; One end of the torsion spring is embedded in the outer side of the feeding cylinder, and the other end of the torsion spring is embedded in the lower side of the slewing ring; the baffle is correspondingly arranged on the upper side of the feeding port.

As a preferred solution of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder in the present invention, wherein: the stirring member includes a stirring rod, the lower end of the stirring rod is provided with a first motor, and the first The lower end of a motor is provided with stirring blades; the outside of the stirring rod is also provided with a drive block; the drive block includes a curved plate, and one end of the curved plate is provided with a toggle tooth; the drive block also includes a threaded ring, The upper end of the threaded ring is also provided with positioning bolts; the toggle teeth can drive the second gear to rotate.

As a preferred solution of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder in the present invention, wherein: the stirring rod penetrates the upper cover plate.

As a preferred solution of the mixed landfill leachate and coal powder in the present invention to prepare a composite coal-water slurry device, wherein: the lifting member includes a second motor, and the output end of the second motor is covered with one end of a belt , the other end of the belt is covered with the input end of the ball screw; the ball screw is also provided with a support plate through a matching slider, and the first motor is fixed on the support plate.

As a preferred solution of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder in the present invention, wherein: the support includes a support body, and a protective shell is also provided on the support body; the second The motor and the ball screw are fixed on the protective shell, and the ball screw is fixed on the bracket body.

Beneficial effects of the present invention: the quantitatively concentrated landfill leachate is introduced into the mixing barrel, and then the coal powder and sodium lignosulfonate are respectively put into the feeding part according to a certain proportion; the stirring part is controlled to descend to the supporting part by the lifting part Position, control the work of the stirring part, the work of the stirring part makes the concentrated landfill leachate be stirred; the work of the stirring part also makes the scraping part work, and the scraping part works to wipe the inner wall of the mixing barrel, so as to avoid part of the reactants from adhering to the On the inner wall; the work of the stirring part also makes the feeding part work, and the work of the feeding part makes the coal powder and sodium lignosulfonate in the feeding part gradually fall into the mixing barrel for many times, so that the landfill leachate, coal powder and Sodium lignosulfonate was thoroughly mixed.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort. in:

Fig. 1 is a schematic diagram of the overall structure of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder according to the present invention.

Fig. 2 is a schematic diagram of the decomposition structure of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder according to the present invention.

Fig. 3 is a schematic diagram of the structure of the wiper assembly described in the compound coal-water slurry device prepared by mixing landfill leachate and coal powder according to the present invention.

Fig. 4 is a schematic structural diagram of the feeding assembly of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder according to the present invention.

Fig. 5 is a schematic diagram of the structure of the stirring assembly of the device for mixing landfill leachate and pulverized coal to prepare a composite coal-water slurry according to the present invention.

Fig. 6 is a schematic diagram of the structure of the driving block of the compound coal-water slurry device prepared by mixing landfill leachate and coal powder according to the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more obvious and comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.

In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

Second, "one embodiment" or "an embodiment" referred to herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. "In one embodiment" appearing in different places in this specification does not all refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional view showing the structure of the device will not be partially enlarged according to the general scale, and the schematic diagram is only an example, and it should not be used here. Limit the scope of protection of the present invention. In addition, the three-dimensional space dimensions of length, width and depth should be included in actual production.

Example 1

Referring to Figure 1, a schematic diagram of the overall structure of a composite coal-water slurry device prepared by mixing landfill leachate and coal powder is provided, as shown in Figure 1-3, a composite coal-water slurry device prepared by mixing landfill leachate and coal powder, Including, the scraping assembly 100 includes a mixing bucket part 101, which is used to scrape the scraping part 102 on the inner wall of the mixing bucket part 101; The supporting part 202 on the part 201, and the feeding part 203 fixed on the upper cover part 201; Lifting member 302, and support member 303 for supporting lifting member 302; Wherein, scraping member 102 is fixed on the upper cover member 201 by bearing; Stirring member 301 stretches into mixing bucket member after penetrating support member 202 and upper cover member 201 within 101;

Among them, the quantitatively concentrated landfill leachate is introduced into the mixing tank part 101, and then the coal powder and sodium lignosulfonate are put into the feeding part 203 according to a certain proportion; the stirring part 301 is controlled by the lifting part 302 to drop to the support part 202 position, control the stirring part 301 to work, the stirring part 301 works to make the concentrated landfill leachate be stirred; the stirring part 301 also makes the scraping part 102 work, and the scraping part 102 works to wipe the inner wall of the mixing barrel part 101; Stirring part 301 work also makes feeding part 203 work, and feeding part 203 work makes coal powder in the feeding part 203, sodium lignosulfonate fall in the mixing barrel part 101 gradually for many times.

Further, the mixing bucket part 101 includes a mixing bucket 101a, the inside of the mixing bucket 101a is provided with a mixing chamber M; the inner wall of the mixing bucket 101a is provided with a first support ring 101a-1; the inner wall of the mixing bucket 101a is located at the first support ring 101a The lower side of -1 is also provided with a second support ring 101a-2;

Wherein, the stirring chamber M is a regular cylindrical shape, and the first supporting ring 101a-1 and the second supporting ring 101a-2 are both close to the upper side of the inner wall of the stirring chamber M.

Further, the wiper 102 includes a first connecting rod 102a, one end of the first connecting rod 102a is provided with a first gear 102a-1, and the other end of the first connecting rod 102a is provided with a second gear 102a-2, and the first connecting rod 102a is provided with a second gear 102a-2. The rod 102a is fixed on the upper cover 201 through bearings; the outer side of the first gear 102a-1 is meshed with an inner gear ring 102a-1a, and the inner gear ring 102a-1a is rotated and embedded in the mixing bucket 101a through the first support ring 101a-1 The inner wall of the inner gear ring 102a-1a is provided with several round rods 102a-1b; the wiper 102 also includes a wiper bar 102c, and the wiper bar 102c is rotated and embedded in the stirring ring 101a-2 The inner wall of the barrel 101a; the inner side of the wiper bar 102c is provided with several L-shaped brackets 102c-1, and the round rods 102a-1b are embedded in the L-shaped brackets 102c-1; the wiper bar 102c also includes a second gear 102a- 2 on the connecting plate 102d, the connecting plate 102d is provided with a short bar 102d-1;

Wherein, the first connecting rod 102a is also fixed on the support member 202 through bearings, the scraping strip 102c is attached to the inner wall of the mixing bucket 101a, and the rotation of the second gear 102a-2 drives the rotation of the first connecting rod 102a and the first gear 102a -1 rotation, the rotation of the first gear 102a-1 drives the inner gear ring 102a-1a to rotate, the rotation of the inner gear ring 102a-1a drives several round rods 102a-1b to rotate, and the rotation of several round rods 102a-1b makes several L-shaped The bracket 102c-1 drives the wiper bar 102c to rotate, and the wiper bar 102c rotates to wipe the inner wall of the mixing bucket 101a.

Operation process: control the stirring member 301 to descend to the position of the support member 202 through the lifting member 302, control the stirring member 301 to work, the stirring member 301 works to stir the concentrated landfill leachate; the stirring member 301 also makes the second gear 102a-2 rotate Drive and rotate the first connecting rod 102a and the first gear 102a-1 to rotate, the first gear 102a-1 rotates to drive the inner toothed ring 102a-1a to rotate, and the inner toothed ring 102a-1a rotates to drive several round rods 102a-1b to rotate. The rotation of each round rod 102a-1b makes the plurality of L-shaped brackets 102c-1 drive the rotation of the scraping bar 102c, and the rotation of the scraping bar 102c makes the inner wall of the mixing bucket 101a be wiped.

Example 2

1-4, this embodiment is different from the first embodiment in that: the upper cover 201 includes an upper cover 201a, and a group of feed ports 201a-1 are opened on the upper cover 201a; Slidingly provided with a movable pumping plate 201a-2; the upper cover plate 201a is embedded in the mixing bucket 101a;

Wherein, the upper cover plate 201a is just snapped and embedded on the mixing barrel 101a, which can facilitate the passage of the stirring member 301 .

Further, the support member 202 includes a support column 202a, a first circular ring 202a-1 is provided on the support column 202a, and a second circular ring 202a-2 is provided on one side of the first circular ring 202a-1;

Wherein, the first connecting rod 102a can be supported by the first circular ring 202a-1, and the lowering position of the stirring member 301 can be positioned by the second circular ring 202a-2.

Further, the feeding part 203 includes a feeding cylinder 203a, and a group of feeding pipes 203a-1 are arranged on the outside of the feeding cylinder 203a; The upper end of 203b is located at the upper side of feeding cylinder 203a and is connected with one end of second connecting rod 203b-1, and the other end of second connecting rod 203b-1 is also provided with push plate 203b-1a, and short rod 102d-1 can drive push The plate 203b-1a rotates; the outer side of the second connecting rod 203b-1 is provided with a rotary ring 203b-2, and the outer side of the second connecting rod 203b-1 is located between the rotary ring 203b-2 and the feeding cylinder 203a, and a torsion spring 203b is provided -2a; one end of the torsion spring 203b-2a is embedded in the outer side of the feeding cylinder 203a, and the other end of the torsion spring 203b-2a is embedded in the lower side of the rotary ring 203b-2; the baffle plate 203b is correspondingly arranged at the feeding port 201a the upper side of -1;

Wherein, pulverized coal and sodium lignosulfonate can be introduced into the feed cylinder 203a for storage respectively through a group of feed pipes 203a-1, and the baffle plate 203b can be fixed on the feed cylinder 203a by bearings, and when the push plate 203b-1a When rotation occurs, the second connecting rod 203b-1 drives the rotary ring 203b-2 and the baffle plate 203b to rotate, and the rotation of the rotary ring 203b-2 makes the torsion spring 203b-2a deform. When the push plate 203b-1a is not rotating, the torsion spring The recovery of deformation of 203b-2a will make the slewing ring 203b-2 return, thereby driving the second connecting rod 203b-1 and the baffle plate 203b to reset.

All the other structures are the same as in Example 1.

Operation process: the rotation of the second gear 102a-2 also drives the connecting plate 102d and the short rod 102d-1 to rotate, the rotation of the short rod 102d-1 drives the rotation of the push plate 203b-1a, and the rotation of the push plate 203b-1a drives the second connecting rod 203b- 1 and the baffle plate 203b rotate, and the baffle plate 203b rotates so that one group of feed ports 201a-1 is opened, and coal powder and sodium lignosulfonate in the feed cylinder 203a fall in the mixing barrel part 101, and when the short rod 102d-1 After leaving the push plate 203b-1a, the push plate 203b-1a returns automatically under the action of the torsion spring 203b-2a, and now the baffle plate 203b blocks one group of feed ports 201a-1 again, and the coal powder and sodium lignosulfonate no longer Falling, through the work of the stirring member 301, coal powder and sodium lignosulfonate can be dropped into the mixing barrel 101 from the feeding cylinder 203a several times.

Example 3

Referring to Fig. 1-6, what this embodiment is different from above embodiment is: agitator 301 comprises stirring rod 301a, and the lower end of stirring rod 301a is provided with first motor 301a-1, and the lower end of first motor 301a-1 is provided with stirring Blade 301a-2; The outside of stirring rod 301a is also provided with driving block 301a-3; Driving block 301a-3 comprises curved plate 301a-3a, and one end of curved plate 301a-3a is provided with toggle tooth 301a-3a-1; The block 301a-3 also includes a threaded ring 301a-3b, and the upper end of the threaded ring 301a-3b is also provided with a positioning bolt 301a-3b-1; the toggle tooth 301a-3a-1 can drive the second gear 102a-2 to rotate;

Wherein, the rotation of the toggle tooth 301a-3a-1 can drive the second gear 102a-2 to rotate intermittently, and the outer side of the stirring rod 301a is provided with a thread that matches the threaded ring 301a-3b, and the rotating threaded ring 301a-3b can adjust For the position of the threaded ring 301a-3b on the stirring rod 301a, the curved plate 301a-3a is inserted into the positioning bolt 301a-3b-1 and then fixed with a nut, thereby fixing the position of the curved plate 301a-3a.

Further, the stirring rod 301a penetrates through the upper cover plate 201a.

Further, the lifting member 302 includes a second motor 302a, the output end of the second motor 302a is covered with one end of the belt 302a-1, and the other end of the belt 302a-1 is covered with the input end of the ball screw 302a-2; The lead screw 302a-2 is also provided with a support plate 302b through a matching slider, and the first motor 301a-1 is fixed on the support plate 302b;

Wherein, the second motor 302a works to drive the belt 302a-1 to work, the belt 302a-1 works to drive the ball screw 302a-2 to rotate, and the rotation of the ball screw 302a-2 can make the slider matched with the ball screw 302a-2 go up and down Moving, the support plate 302b is fixed on the slider, so the support plate 302b moves up and down following the slider, and the support plate 302b moves up and down to drive the stirring member 301 to move up and down.

Further, the support member 303 includes a support body 303a, and a protective case 303a-1 is also provided on the support body 303a; the second motor 302a and the ball screw 302a-2 are fixed on the protective case 303a-1, and the ball screw 302a-2 fixed on the bracket body 303a;

Wherein, the ball screw 302a-2 of the bracket body 303a and the second motor 302a play a supporting role, and the protective shell 303a-1 plays a protective role for the second motor 302a.

All the other structures are the same as in Example 2.

Operation process: control the second motor 302a to work to make the belt 302a-1 work, the work of the belt 302a-1 makes the ball screw 302a-2 work, the work of the ball screw 302a-2 makes the support plate 302b pass through and the ball screw 302a-2 The matching slider moves up and down along the guide rod on the ball screw 302a-2, and the support plate 302b moves up and down to make the agitator 301 move up and down;

Control the first motor 301a-1 to work so that the stirring rod 301a drives the stirring blade 301a-2 to rotate, and the stirring blade 301a-2 rotates to make the liquid in the stirring chamber M mixed;

The downward movement of the stirring rod 301a can make the driving toggle tooth 301a-3a-1 on the driving block 301a-3 indirectly drive the second gear 102a-2 to rotate.

It is important to note that the construction and arrangement of the application, shown in the various exemplary embodiments, are illustrative only. Although only a few embodiments have been described in detail in this disclosure, it should be readily apparent to those who review this disclosure that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application. are possible (e.g., variations in dimensions, dimensions, structures, shapes and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.). For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be inverted or otherwise varied, and the nature or number or positions of discrete elements may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any "means-plus-function" clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operation and arrangement of the exemplary embodiments without departing from the scope of the invention. Accordingly, the invention is not limited to a particular embodiment, but extends to various modifications still falling within the scope of the appended claims.

Moreover, in order to provide a concise description of exemplary embodiments, not all features of an actual embodiment (i.e., those features not relevant to the best mode presently considered for carrying out the invention, or to practicing the invention feature).

It should be appreciated that during the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort would be complex and time-consuming, but would be a routine matter of design, fabrication, and production without undue experimentation to those of ordinary skill having the benefit of this disclosure .

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. A compound type coal water slurry device prepared by mixing landfill leachate and coal powder, characterized in that: comprising, A scraping assembly (100), including a mixing bucket (101), a scraping piece (102) for scraping the inner wall of the mixing bucket (101); The feeding assembly (200) includes an upper cover (201) located on the mixing bucket (101), a support (202) fixed on the upper cover (201), and a support (202) fixed on the upper the loading member (203) on the cover member (201); and, Stirring assembly (300), including a stirring piece (301) inserted in the middle of the upper cover (201), a lifting piece (302) for controlling the height of the stirring piece (301), and a lifting piece (302) for supporting the The bracket part (303) of the lifting part (302); Wherein, the wiper (102) is fixed on the upper cover (201) through a bearing; The stirring member (301) penetrates the support member (202) and the upper cover member (201) and then extends into the mixing barrel member (101). 2. The compound type coal-water slurry device prepared by mixing landfill leachate and coal powder as claimed in claim 1, characterized in that: the mixing bucket (101) comprises a mixing bucket (101a), and the mixing bucket (101a) There is a stirring chamber (M) on the inner side; A first support ring (101a-1) is provided on the inner wall of the mixing bucket (101a); The inner wall of the mixing bucket (101a) is located on the lower side of the first support ring (101a-1), and a second support ring (101a-2) is also provided. 3. The compound coal-water slurry device prepared by mixing landfill leachate and coal powder as claimed in claim 2, characterized in that: the scraper (102) includes a first connecting rod (102a), and the first connecting rod (102a) One end of the rod (102a) is provided with a first gear (102a-1), and the other end of the first connecting rod (102a) is provided with a second gear (102a-2), and the first connecting rod (102a) passes through The bearing is fixed on the upper cover (201); The outer side of the first gear (102a-1) is meshed with an inner gear ring (102a-1a), and the inner gear ring (102a-1a) is rotated and embedded in the mixing bucket ( 101a) the inner wall; Several round rods (102a-1b) are provided on the lower side of the inner gear ring (102a-1a); The wiper (102) also includes a wiper strip (102c), and the wiper strip (102c) is rotated and embedded in the inner wall of the mixing bucket (101a) through the second support ring (101a-2); Several L-shaped brackets (102c-1) are arranged on the inner side of the wiper strip (102c), and the round rods (102a-1b) are embedded in the L-shaped brackets (102c-1); The wiper strip (102c) also includes a connecting plate (102d) located on the second gear (102a-2), and a short rod (102d-1) is arranged on the connecting plate (102d). 4. landfill leachate as claimed in claim 3 is mixed with pulverized coal and prepares compound type coal-water slurry device, it is characterized in that: described upper cover (201) comprises upper cover plate (201a), and described upper cover plate ( 201a) is provided with a group of feeding ports (201a-1); The upper cover (201a) is also slidably provided with a movable drawer (201a-2); The upper cover plate (201a) is clamped and embedded on the mixing bucket (101a). 5. The compound coal-water slurry device prepared by mixing landfill leachate and coal powder as claimed in claim 4, characterized in that: the support (202) includes a support column (202a), and the support column (202a) A first circular ring (202a-1) is provided, and a second circular ring (202a-2) is provided on one side of the first circular ring (202a-1). 6. landfill leachate as claimed in claim 5 is mixed with pulverized coal and prepares compound type coal-water slurry device, it is characterized in that: described feeding part (203) comprises feeding cylinder (203a), and described feeding cylinder ( 203a) is provided with a group of feed pipes (203a-1) on the outside; The feeding member (203) also includes a baffle (203b) that is inserted into the feeding cylinder (203a), and the upper end of the baffle (203b) is located on the upper side of the feeding cylinder (203a) and is connected with a second One end of the connecting rod (203b-1), the other end of the second connecting rod (203b-1) is also provided with a push plate (203b-1a), and the short rod (102d-1) can drive the push plate (203b - 1a) turn; The outer side of the second connecting rod (203b-1) is provided with a rotary ring (203b-2), and the outer side of the second connecting rod (203b-1) is located at the rotary ring (203b-2), the feeding cylinder (203a ) is provided with a torsion spring (203b-2a); One end of the torsion spring (203b-2a) is embedded in the outer side of the feeding cylinder (203a), and the other end of the torsion spring (203b-2a) is embedded in the lower side of the slewing ring (203b-2); The baffle (203b) is correspondingly arranged on the upper side of the feed inlet (201a-1). 7. The compound coal-water slurry device prepared by mixing landfill leachate and coal powder as claimed in claim 4 or 6, characterized in that: the stirring member (301) includes a stirring rod (301a), and the stirring rod (301a ) is provided with a first motor (301a-1) at the lower end, and a stirring blade (301a-2) is provided at the lower end of the first motor (301a-1); The outer side of the stirring rod (301a) is also provided with a drive block (301a-3); The driving block (301a-3) includes a curved plate (301a-3a), and one end of the curved plate (301a-3a) is provided with a toggle tooth (301a-3a-1); The driving block (301a-3) also includes a threaded ring (301a-3b), and the upper end of the threaded ring (301a-3b) is also provided with a positioning bolt (301a-3b-1); The toggle teeth (301a-3a-1) can drive the second gear (102a-2) to rotate. 8. The device for preparing composite coal-water slurry by mixing landfill leachate and coal powder according to claim 7, characterized in that: the stirring rod (301a) runs through the upper cover plate (201a). 9. The compound coal-water slurry device prepared by mixing landfill leachate and coal powder as claimed in claim 8, characterized in that: the lifting member (302) includes a second motor (302a), and the second motor (302a ) is sleeved with one end of a belt (302a-1), and the other end of the belt (302a-1) is sleeved with an input end of a ball screw (302a-2); The ball screw (302a-2) is also provided with a support plate (302b) through a matching slider, and the first motor (301a-1) is fixed on the support plate (302b). 10. The compound coal-water slurry device prepared by mixing landfill leachate and coal powder as claimed in claim 9, characterized in that: the support (303) includes a support body (303a), and the support body (303a) A protective shell (303a-1) is also provided; The second motor (302a) and the ball screw (302a-2) are fixed on the protective case (303a-1), and the ball screw (302a-2) is fixed on the bracket body (303a).