Dust-free concrete stirring system

Abstract

The invention provides a concrete dust-free stirring system, and relates to the technical field of concrete stirring, the concrete dust-free stirring system comprises a stirring bin shell, a discharge valve and a PLC circuit control panel, four supporting legs are distributed on the outer wall of the stirring bin shell, a stirring bin inner container is placed on the inner wall of the stirring bin shell, the top surfaces of the four supporting legs are jointly clamped with a sealing mechanism, and the sealing mechanism is connected with the discharge valve. A driving mechanism is fixedly installed on the top face of the sealing mechanism, the sealing mechanism is further rotationally connected with a stirring mechanism, six ventilation through holes of the stirring mechanism play a ventilation role in the stirring process and are used for balancing the pressure in the stirring bin inner container, a dustproof net shields the ventilation through holes, and dust is prevented from flying out. According to the concrete stirring device, the stirring bin inner container and the circular sealing cover form a semi-sealing structure, and the annular sealing rubber ring and the annular sealing groove are matched for sealing, so that the concrete stirring device has the semi-sealing stirring effect, and the problems that when an existing concrete stirring device is used, the body health of constructors is affected, and the service life of the stirring device is affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete mixing, and more specifically, particularly relates to a dust-free concrete mixing system. Background Art

[0002] In the field of modern construction, concrete is a vital building material, and its production and mixing process is a key link in construction. With the acceleration of urbanization, large-scale infrastructure construction and real estate development continue to increase the demand for concrete. Among them, concrete mixing devices are important machines for concrete production. Concrete mixing devices are widely used in various construction sites, concrete ready-mixing plants and other places to meet the demand for high-quality concrete in construction.

[0003] At present, most of the existing concrete mixing devices use the following technologies:

[0004] 1. Mixing technology, mostly mechanical mixing technology, a small amount of new ultrasonic mixing, among which mechanical mixing technology includes forced mixing, which is a common method in concrete mixing devices. It uses the mixing blades installed on the mixing shaft to force the material to mix. The shape and layout of the mixing blades have a key influence on the mixing effect. Mechanical mixing technology also includes self-falling mixing, which mainly relies on the rotation of the mixing drum to continuously lift and fall the material in the drum to achieve mixing. This mixing method is suitable for mixing plastic concrete.

[0005] 2. Material conveying technology, including feeding technology and discharging technology. Among them, feeding technology includes belt conveyor and screw conveyor, and discharging technology includes chute discharging. Chute discharging is a simple discharging method. After the mixed concrete flows out from the discharge port at the bottom or side of the mixing drum, the concrete is guided to the transport vehicle or construction site through an inclined chute. Discharging technology also includes pumping discharging. For some high-rise buildings or long-distance transportation, pumping discharging is used. The concrete pump pushes the concrete in the pipeline through pistons or extrusion.

[0006] 3. Automation control technology, including PLC control system. Programmable logic controller (PLC) is widely used in concrete mixing devices. PLC can accurately control the speed of each motor, the opening and closing time of the valve, etc. according to the preset concrete mix ratio and mixing process. Automation control technology also includes sensor technology, including components such as material weight sensor and liquid level sensor. The weight sensor installed on the feeding device can monitor the weight of the feed in real time. The liquid level sensor is installed in the water tank and other parts of the mixing device to monitor the amount of water added.

[0007] 4. Dust prevention and environmental protection technology. Concrete mixing devices are usually equipped with dust collection systems to collect dust generated during the mixing process. The dust collection system includes dust collection pipes, fans and dust collectors. The dust collection pipes are arranged at key positions of the mixing device, such as the feed port, discharge port and the top of the mixing drum, to collect the dust-containing air.

[0008] Traditional concrete mixing devices usually use mixing blades to forcefully mix raw materials such as cement, sand, and water. During the mixing process, powdery materials such as cement are easily blown up by the airflow disturbance caused by the mixing action because of their small particle size and light weight. Especially in the initial stage of mixing, powdery materials are in a relatively loose state, which makes it easier to form dust.

[0009] The generated dust will not only cause serious pollution to the environment around the mixing device and affect the surrounding air quality, but also pose a huge threat to the health of operators. Operators who are exposed to high-concentration dust for a long time are prone to respiratory diseases such as pneumoconiosis and bronchitis. In addition, dust may also adhere to various components of the mixing device, affecting the normal operation of the device, increasing the maintenance cost and failure rate of the equipment. For example, dust may enter the transmission components of the mixing device, accelerate the wear of the components, and reduce their service life. Therefore, most existing concrete mixing devices have problems of affecting the health of construction workers and shortening the service life of the mixing device when in use.

[0010] Therefore, the existing structure and defects are studied and improved, and a dust-free concrete mixing system is provided. Summary of the invention

[0011] In order to solve the above technical problems, the present invention provides a dust-free concrete mixing system to solve the above problems.

[0012] A dust-free concrete mixing system comprises a mixing bin shell, a discharge valve and a PLC circuit control panel, wherein the discharge valve is used to discharge the mixed concrete, the PLC circuit control panel is used to control the circuit of the entire device, the outer wall of the mixing bin shell is distributed and fixedly connected with four support legs, the support legs are used to support the mixing bin shell, a mixing bin liner is placed on the inner wall of the mixing bin shell, and the mixing bin liner is detachable and replaceable, a sealing mechanism is commonly clamped on the top surfaces of the four support legs, a driving mechanism is fixedly installed on the top surface of the sealing mechanism, and the sealing mechanism is also rotatably connected with a mixing mechanism, wherein the driving mechanism is used to drive the mixing mechanism to rotate so as to mix the concrete, the sealing mechanism comprises a circular sealing cover, the circular sealing cover covers the top of the mixing bin liner to achieve a semi-sealed effect, the driving mechanism comprises an asynchronous motor, the asynchronous motor is a power source, and the mixing mechanism comprises a transmission mixing shaft.

[0013] Preferably, the top surfaces of the four supporting legs are each provided with a square slot, and the bottom of the mixing chamber shell is provided with a circular slot.

[0014] Preferably, a discharge pipe is fixedly provided at the bottom of the mixing bin inner tank, and the discharge pipe is sleeved on the inner side of the circular groove. Specifically, the discharge pipe passes through the inside of the circular groove and faces the bottom surface. An annular sealing groove is provided on the top of the mixing bin inner tank. The discharge valve is fixedly connected to one end of the discharge pipe away from the mixing bin inner tank and passing through the circular groove by bolts. The switch of the discharge valve is controlled by a PLC circuit control panel and is used for unloading.

[0015] Preferably, an annular sealing rubber ring is fixedly connected to the bottom surface of the circular sealing cover, and the annular sealing rubber ring is adapted to the annular sealing groove. The annular sealing rubber ring and the annular sealing groove cooperate to fill the gap between the inner tank of the mixing bin and the circular sealing cover to achieve a sealing effect.

[0016] Preferably, four connection blocks are distributed and fixedly connected to the circumferential surface of the circular sealing cover, and the bottoms of the four connection blocks are all fixedly connected to square clamping blocks.

[0017] Preferably, the four square card blocks are plugged into the four square card slots respectively, and the four connecting blocks are fixed by plugging the four square card blocks into the four square card slots, thereby fixing the circular sealing cover.

[0018] Preferably, six ventilation holes are provided on the surface of the circular sealing cover, and a dustproof net is fixedly connected to the top surface of the circular sealing cover. The dustproof net is arranged above the six ventilation holes. During the stirring process, the six ventilation holes have a ventilation effect and are used to balance the pressure inside the inner tank of the stirring chamber. The dustproof net blocks the ventilation holes to prevent dust from flying out.

[0019] Preferably, the PLC circuit control panel is fixedly installed on the top surface of the circular sealing cover, the discharge valve is electrically connected to the PLC circuit control panel, a feeding funnel is fixedly connected to the top surface of the circular sealing cover, a funnel cover is hinged at one end of the feeding funnel away from the circular sealing cover, the feeding funnel is used to add concrete raw materials, and the funnel cover covers the opening of the feeding funnel to prevent dust from escaping during operation.

[0020] Preferably, the asynchronous motor is fixedly mounted on the top surface of the circular sealing cover, the output shaft of the asynchronous motor is fixedly connected with a driving gear, the driving gear is meshed and clamped with a driven gear, the asynchronous motor is electrically connected to the PLC circuit control panel, and the driving gear and the driven gear play a transmission role.

[0021] Preferably, the transmission stirring shaft is fixedly connected to the driven gear, and the transmission stirring shaft is rotatably connected to the axis center of the circular sealing cover. A section of the transmission stirring shaft located at the bottom of the circular sealing cover is fixedly connected to a plurality of concrete stirring paddles. The concrete stirring paddle is arc-shaped, and the concrete stirring paddle located at the bottom contacts the inner bottom surface of the mixing bin inner tank. The concrete stirring paddle is fixedly connected to four anti-adhesion scraper plates, and the four anti-adhesion scraper plates are all in contact with the inner wall of the mixing bin inner tank. The driven gear transmits the power of the asynchronous motor to drive the rotation of the transmission stirring shaft, and the transmission stirring shaft drives the concrete stirring paddle to stir the concrete raw materials to achieve the effect of mixing concrete. The anti-adhesion scraper plates prevent the concrete from solidifying on the inner wall of the mixing bin inner tank, thereby damaging the entire device.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In the present invention, a sealing mechanism is provided, and the sealing mechanism includes a circular sealing cover. When the present application is in use, the funnel cover plate can be opened, and the pre-prepared concrete raw materials are added to the inner tank of the mixing bin through the feeding funnel. After the addition is completed, the funnel cover plate is closed. At this time, the asynchronous motor is controlled to start through the PLC circuit control panel, and the asynchronous motor drives the driving gear to rotate, the driving gear drives the driven gear to rotate, the driven gear drives the transmission stirring shaft to rotate, and the transmission stirring shaft drives the concrete stirring paddle to rotate, thereby stirring the concrete. The concrete stirring paddle and the anti-adhesion scraper plate scrape the inner wall of the mixing bin to prevent adhesion. During the stirring process, the six ventilation holes have a ventilation effect, which is used to balance the pressure inside the mixing bin inner tank. The dustproof net blocks the ventilation holes to prevent dust from flying out. In the present application, the mixing bin inner tank and the circular sealing cover form a semi-sealed structure, and the annular sealing rubber ring and the annular sealing groove are used for sealing, so that the present application has the effect of semi-sealed stirring, which solves the problem that most of the existing concrete mixing devices affect the health of construction personnel and the service life of the mixing device when in use.

[0024] In the present invention, by providing a split structure, when the present application needs to be cleaned, the circular sealing cover and the components connected thereto can be removed together, and the discharge pipe and the discharge valve can be separated, the inner tank of the mixing bin can be removed separately for cleaning, and the concrete solidified material attached to its inner wall can be damaged and cleaned, and at the same time, the mixing mechanism connected to the removed sealing mechanism is exposed to the outside air, which is also convenient for cleaning the mixing mechanism, so that the present application has the effect of being easy to clean.

[0025] In the present invention, a split structure is provided, which includes a detachable stirring chamber liner. When the stirring chamber liner is used for a long time and is worn, the stirring chamber liner can be removed and replaced with a new one. Compared with the traditional stirring device with only one layer of stirring chamber, the present application can also replace the stirring chamber liner after it is damaged. At the same time, the removed stirring chamber liner is also convenient for repair and maintenance, so that the present application has a longer service life and higher stability.

[0026] In the present invention, by providing a split structure, when the present application needs to be transported, the components connected by the mixing chamber shell, the mixing chamber liner and the circular sealing cover can be disassembled for transportation, so that the weight of a single transportation is lighter and it is convenient for workers to transport. The components can also be assembled together for transportation, which is convenient for saving transportation space, so that the present application has a variety of transportation methods and thus has the effect of facilitating transportation.

[0027] In the present invention, a driving mechanism is provided, and the driving mechanism includes an asynchronous motor, a driving gear and a driven gear. The driving mechanism is arranged as a whole on the outside of the device body. When the asynchronous motor is damaged, maintenance personnel can directly repair the asynchronous motor on the outside, so that the present application has the effect of facilitating maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the overall rear view structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the overall bottom-up structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the overall explosion structure of the present invention;

[0032] Figure 5 It is a schematic diagram of the overall sealing mechanism structure of the present invention;

[0033] Figure 6 It is a schematic diagram of the overall structure of the stirring mechanism of the present invention;

[0034] Figure 7 It is a schematic diagram of the separation structure of the stirring chamber inner container and the stirring chamber outer shell of the present invention;

[0035] Figure 8 It is a bottom view structural diagram of the overall mixing chamber inner container of the present invention;

[0036] Fig. 9 It is a bottom view structural schematic diagram of the overall circular sealing cover of the present invention;

[0037] Fig.10 The present invention Figure 7A is an enlarged structural diagram of FIG.

[0038] In the figure, the correspondence between the component names and the figure numbers is: 1. Mixing chamber shell; 2. Mixing chamber liner; 3. Round sealing cover; 4. Driving mechanism; 5. Mixing mechanism; 101. Support leg; 102. Square card slot; 103. Round slot; 201. Discharge pipe; 202. Annular sealing groove; 203. Discharge valve; 301. Connecting block; 302. Square card block; 303. Through hole for ventilation; 304. Annular sealing rubber ring; 305. Feeding funnel; 306. Funnel cover; 307. PLC circuit control panel; 308. Dustproof net; 401. Asynchronous motor; 402. Driving gear; 403. Driven gear; 501. Transmission stirring shaft; 502. Concrete mixing paddle; 503. Anti-adhesion scraper. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0040] Example:

[0041] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 The present invention provides a dust-free concrete mixing system, comprising a mixing chamber shell 1, a discharge valve 203 and a PLC circuit control panel 307, wherein the discharge valve 203 is used to discharge the mixed concrete, the PLC circuit control panel 307 is used to control the circuit of the entire device, the outer wall of the mixing chamber shell 1 is distributed and fixedly connected with four support legs 101, the support legs 101 are used to support the mixing chamber shell 1, the inner wall of the mixing chamber shell 1 is placed with a mixing chamber liner 2, and the mixing chamber liner 2 is detachable and replaceable, the top surfaces of the four support legs 101 are commonly clamped with a sealing mechanism, the top surface of the sealing mechanism is fixedly installed with a driving mechanism 4, and the sealing mechanism is also rotatably connected with a stirring mechanism 5, wherein the driving mechanism 4 is used to drive the stirring mechanism 5 to rotate so as to stir the concrete, the sealing mechanism comprises a circular sealing cover 3, the circular sealing cover 3 covers the top of the mixing chamber liner 2, and has a semi-sealed effect, the driving mechanism 4 comprises an asynchronous motor 401, the asynchronous motor 401 is a power source, and the stirring mechanism 5 comprises a transmission stirring shaft 501.

[0042] The top surfaces of the four supporting legs 101 are each provided with a square slot 102 , and the bottom of the mixing chamber housing 1 is provided with a circular slot 103 .

[0043] A discharge pipe 201 is fixedly arranged at the bottom of the mixing chamber inner tank 2, and the discharge pipe 201 is sleeved on the inner side of the circular groove 103. Specifically, the discharge pipe 201 passes through the inside of the circular groove 103 and faces the bottom surface. An annular sealing groove 202 is opened on the top of the mixing chamber inner tank 2. The discharge valve 203 is fixedly connected to the end of the discharge pipe 201 away from the mixing chamber inner tank 2 and passing through the circular groove 103 by bolts. The switch of the discharge valve 203 is controlled by the PLC circuit control panel 307 and is used for unloading.

[0044] The bottom surface of the circular sealing cover 3 is fixedly connected with an annular sealing rubber ring 304, which is matched with the annular sealing groove 202. The annular sealing rubber ring 304 cooperates with the annular sealing groove 202 to fill the gap between the mixing chamber liner 2 and the circular sealing cover 3 to achieve a sealing effect.

[0045] Four connecting blocks 301 are distributed and fixedly connected to the circumferential surface of the circular sealing cover 3 , and square clamping blocks 302 are fixedly connected to the bottoms of the four connecting blocks 301 .

[0046] The four square clamping blocks 302 are plugged into the four square clamping slots 102 respectively. The four connecting blocks 301 are fixed by plugging the four square clamping blocks 302 into the four square clamping slots 102 , thereby fixing the circular sealing cover 3 .

[0047] Six ventilation holes 303 are provided on the surface of the circular sealing cover 3, and a dustproof net 308 is fixedly connected to the top surface of the circular sealing cover 3. The dustproof net 308 is arranged above the six ventilation holes 303. During the stirring process, the six ventilation holes 303 have a ventilation effect and are used to balance the pressure inside the stirring chamber liner 2. The dustproof net 308 blocks the ventilation holes 303 to prevent dust from flying out.

[0048] The PLC circuit control panel 307 is fixedly installed on the top surface of the circular sealing cover 3, the discharge valve 203 is electrically connected to the PLC circuit control panel 307, and a feeding funnel 305 is fixedly connected to the top surface of the circular sealing cover 3. A funnel cover plate 306 is hinged at one end of the feeding funnel 305 away from the circular sealing cover 3. The feeding funnel 305 is used to add concrete raw materials, and the funnel cover plate 306 covers the opening of the feeding funnel 305 to prevent dust from escaping during operation.

[0049] The asynchronous motor 401 is fixedly mounted on the top surface of the circular sealing cover 3, the output shaft of the asynchronous motor 401 is fixedly connected with a driving gear 402, the driving gear 402 is meshed and engaged with a driven gear 403, the asynchronous motor 401 is electrically connected to the PLC circuit control panel 307, and the driving gear 402 and the driven gear 403 play a transmission role.

[0050] The transmission stirring shaft 501 is fixedly connected to the driven gear 403, and the transmission stirring shaft 501 is rotatably connected to the axis of the circular sealing cover 3. A section of the transmission stirring shaft 501 located at the bottom of the circular sealing cover 3 is fixedly connected with a plurality of concrete stirring paddles 502. The concrete stirring paddles 502 are arc-shaped, and the concrete stirring paddles 502 located at the bottom are in contact with the inner bottom surface of the mixing bin liner 2. The concrete stirring paddles 502 are fixedly connected with four anti-adhesion scraper plates 503, and the four anti-adhesion scraper plates 503 are in contact with the inner wall of the mixing bin liner 2. The driven gear 403 transmits the power of the asynchronous motor 401 to drive the rotation of the transmission stirring shaft 501, and the transmission stirring shaft 501 drives the concrete stirring paddles 502 to stir the concrete raw materials to achieve the effect of mixing concrete. The anti-adhesion scraper plates 503 prevent the concrete from solidifying on the inner wall of the mixing bin liner 2, thereby damaging the entire device.

[0051] By providing a sealing mechanism, the sealing mechanism includes a circular sealing cover 3. When the present application is in use, the funnel cover plate 306 can be opened, and the pre-prepared concrete raw materials are added to the mixing chamber inner tank 2 through the feeding funnel 305. After the addition is completed, the funnel cover plate 306 is closed, and at this time, the asynchronous motor 401 is controlled to start through the PLC circuit control panel 307, and the asynchronous motor 401 drives the driving gear 402 to rotate, the driving gear 402 drives the driven gear 403 to rotate, the driven gear 403 drives the transmission stirring shaft 501 to rotate, and the transmission stirring shaft 501 drives the concrete stirring paddle 502 to rotate, so as to stir the concrete, and the mixing The concrete mixing paddle 502 and the anti-adhesion scraper plate 503 scrape the inner wall of the mixing chamber liner 2 to prevent adhesion. During the mixing process, the six air holes 303 have a ventilation effect and are used to balance the pressure inside the mixing chamber liner 2. The dustproof net 308 blocks the air holes 303 to prevent dust from flying out. In the present application, the mixing chamber liner 2 and the circular sealing cover 3 form a semi-sealed structure, and are sealed by the annular sealing rubber ring 304 and the annular sealing groove 202, so that the present application has a semi-sealed mixing effect, which solves the problem that most existing concrete mixing devices affect the health of construction workers and the service life of the mixing devices when in use.

[0052] Working principle:

[0053] The first step is to place the mixing chamber shell 1 near the construction site through four supporting legs 101 during installation. Then, place the mixing chamber liner 2 inside the mixing chamber shell 1 and sleeve the discharge pipe 201 into the circular groove 103. Then, fix the discharge valve 203 to the discharge pipe 201 through bolts, move the circular sealing cover 3 together with the driving mechanism 4 and the mixing mechanism 5 to the top of the mixing chamber shell 1, and insert the square card blocks 302 fixedly connected to each connecting block 301 into the square card groove 102. At this time, the annular sealing rubber ring 304 cooperates with the annular sealing groove 202 to seal, and the PLC circuit control panel 307 is electrically connected to the discharge valve 203 through a flexible cable. During the process of the square clamping block 302 and the square clamping groove 102 being clamped together, the concrete mixing paddle 502 located at the bottom contacts the inner bottom surface of the mixing chamber liner 2, and the anti-adhesion scraper 503 contacts the inner wall of the mixing chamber liner 2. The weight of the circular sealing cover 3, the driving mechanism 4 and the mixing mechanism 5 themselves is sufficient, and no additional limit is required. At this time, the installation is completed.

[0054] In the second step, when the present application is in use, the funnel cover 306 can be opened, and the prepared concrete raw materials can be added to the mixing bin liner 2 through the feeding funnel 305. After the addition is completed, the funnel cover 306 is closed, and the asynchronous motor 401 is controlled to start through the PLC circuit control panel 307. The asynchronous motor 401 drives the driving gear 402 to rotate, and the driving gear 402 drives the driven gear 403 to rotate. The driven gear 403 drives the transmission stirring shaft 501 to rotate, and the transmission stirring shaft 501 drives the concrete stirring paddle 502 to rotate, thereby stirring the concrete. The concrete stirring paddle 502 and the anti-adhesion scraper 503 scrape the inner wall of the mixing bin liner 2 to avoid adhesion. During the stirring process, the six ventilation holes 303 have a ventilation effect, which is used to balance the pressure inside the mixing bin liner 2. The dustproof net 308 blocks the ventilation holes 303 to prevent dust from flying out.

[0055] In the third step, when the present application needs to be cleaned, the circular sealing cover 3 and the components connected thereto can be removed together, and the discharge pipe 201 can be separated from the discharge valve 203, and the mixing chamber inner tank 2 can be removed separately for cleaning, and the concrete solidified materials attached to its inner wall can be damaged and cleaned, and at the same time, the mixing mechanism 5 connected to the removed sealing mechanism is exposed to the outside air, which is also convenient for cleaning the mixing mechanism 5.

[0056] The fourth step, when the present application needs to be transported, the components connected by the mixing chamber shell 1, the mixing chamber liner 2 and the circular sealing cover 3 can be disassembled for transportation, so that the weight of a single transportation is lighter and convenient for workers to transport. They can also be assembled together for transportation to save transportation space, so that the present application has multiple transportation methods and has the effect of facilitating transportation.

[0057] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A dust-free concrete mixing system, comprising a mixing chamber housing (1), a discharge valve (203) and a PLC circuit control panel (307), characterized in that: Four supporting legs (101) are distributed on the outer wall of the stirring chamber shell (1); a stirring chamber liner (2) is placed on the inner wall of the stirring chamber shell (1); a sealing mechanism is commonly engaged on the top surfaces of the four supporting legs (101); a driving mechanism (4) is fixedly mounted on the top surface of the sealing mechanism; and the sealing mechanism is also rotatably connected to a stirring mechanism (5); Wherein, the sealing mechanism comprises a circular sealing cover (3); Wherein, the driving mechanism (4) comprises an asynchronous motor (401); Wherein, the stirring mechanism (5) comprises a stirring shaft (501) for transmission.

2. A dust-free concrete mixing system as claimed in claim 1, characterized in that: The top surfaces of the four supporting legs (101) are each provided with a square slot (102), and the bottom of the mixing chamber housing (1) is provided with a circular slot (103).

3. A dust-free concrete mixing system as claimed in claim 2, characterized in that: A discharge pipe (201) is fixedly arranged at the bottom of the mixing chamber inner container (2), and the discharge pipe (201) is sleeved on the inner side of the circular groove (103). An annular sealing groove (202) is provided at the top of the mixing chamber inner container (2), and the discharge valve (203) is fixedly connected to one end of the discharge pipe (201) away from the mixing chamber inner container (2) and passing through the circular groove (103).

4. A dust-free concrete mixing system as claimed in claim 3, characterized in that: An annular sealing rubber ring (304) is fixedly connected to the bottom surface of the circular sealing cover (3), and the annular sealing rubber ring (304) is adapted to the annular sealing groove (202).

5. A dust-free concrete mixing system as claimed in claim 4, characterized in that: Four connecting blocks (301) are distributed on the circumferential surface of the circular sealing cover (3), and the bottoms of the four connecting blocks (301) are all fixedly connected with square clamping blocks (302).

6. A dust-free concrete mixing system as claimed in claim 5, characterized in that: The four square card blocks (302) are respectively plugged into the four square card slots (102).

7. A dust-free concrete mixing system as claimed in claim 6, characterized in that: The surface of the circular sealing cover (3) is provided with six ventilation holes (303), and the top surface of the circular sealing cover (3) is fixedly connected with a dustproof net (308), and the dustproof net (308) is arranged above the six ventilation holes (303).

8. A dust-free concrete mixing system as claimed in claim 7, characterized in that: The PLC circuit control panel (307) is fixedly mounted on the top surface of the circular sealing cover (3), the top surface of the circular sealing cover (3) is fixedly connected with a feeding funnel (305), and one end of the feeding funnel (305) away from the circular sealing cover (3) is hingedly connected with a funnel cover plate (306).

9. A dust-free concrete mixing system as claimed in claim 8, characterized in that: The asynchronous motor (401) is fixedly mounted on the top surface of the circular sealing cover (3); the output shaft of the asynchronous motor (401) is fixedly connected to a driving gear (402); and the driving gear (402) is meshed and clamped with a driven gear (403).

10. A dust-free concrete mixing system as claimed in claim 9, characterized in that: The transmission stirring shaft (501) is fixedly connected to the driven gear (403), the transmission stirring shaft (501) is rotatably connected to the axis of the circular sealing cover (3), a section of the transmission stirring shaft (501) located at the bottom of the circular sealing cover (3) is fixedly connected to a concrete stirring paddle (502), the concrete stirring paddle (502) is arc-shaped, the concrete stirring paddle (502) contacts the inner bottom surface of the stirring chamber liner (2), and the concrete stirring paddle (502) is fixedly connected to an anti-adhesion scraper (503), and the anti-adhesion scraper (503) contacts the inner wall of the stirring chamber liner (2).

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