Dustproof device for cement mixer

Abstract

The utility model relates to the technical field of building equipment, and discloses a dustproof device for a cement mixer, which comprises an outer cover, the inner wall of the outer cover is rotatably connected with a connecting shaft, the middle section of the connecting shaft is fixedly provided with a mixing drum, a dumping component is arranged between the outer cover and the mixing drum, and a mixing component is arranged on the surface of the mixing drum. A folding check curtain is arranged on the surface of the outer cover. In the feeding and stirring process, the getter pump is started, raised dust is sucked into the dust collecting box through the dust inlet holes by utilizing the getter pump under the action of negative pressure, and then is intercepted in the dust collecting box under the action of the filter screen, so that the influence of the raised dust on the external environment in the cement stirring and preparing process is reduced, and the dust is prevented from falling off in the middle and later stages of cement stirring. An electric push rod is controlled to extend to open a sealing plate, dust in a dust collection box can be added into the stirring barrel to be mixed and reused, the collected dust does not need to be additionally treated, the effect of utilizing the dust can be achieved, and the applicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of construction equipment, and more specifically to a dustproof device for a cement mixer. Background Art

[0002] The main raw materials of cement are lime or calcium silicate, which can resist the erosion of fresh water or salt water after hardening. As an important cementing material, it is widely used in civil construction, water conservancy, national defense and other projects. Cement is usually not used alone, but is used to combine with sand and gravel (aggregate) to form mortar or concrete. When mixing cement and aggregate, a cement mixer is required. When the cement mixer is used, dust often arises.

[0003] After searching, the existing patent (publication number: CN218083389U) discloses a dust prevention device for cement mixers. When in use, the semi-enclosed mixing mechanism can solve the large amount of dust caused by cement mixing to a limited extent, and the dust around the mixer is absorbed and filtered by the dust prevention mechanism and then discharged, which greatly reduces the problem of dust during cement mixing. However, in the process of realizing the utility model, the inventor found that the prior art has the following problems: the above-mentioned dust prevention device collects dust in the dust storage bin when collecting dust. After the use of the device is over, manpower needs to spend extra effort to remove the dust inside the dust storage bin, which causes the defect of cumbersome operation and delays the cement mixing action.

[0004] In view of this, the utility model proposes a convenient-to-use dust prevention device for a cement mixer to solve this problem. Utility Model Content

[0005] In order to overcome the above defects of the prior art, the utility model provides a dust prevention device for a cement mixer to solve the problems existing in the above background technology.

[0006] The utility model provides the following technical solution: a dust-proof device for a cement mixer, comprising an outer cover, the inner wall of the outer cover is rotatably connected with a connecting shaft, a mixing drum is fixedly installed on the middle section of the connecting shaft, a dumping assembly is arranged between the outer cover and the mixing drum, a mixing assembly is arranged on the surface of the mixing drum, a folding curtain is arranged on the surface of the outer cover, a feed hopper is arranged on the top of the outer cover corresponding to the mixing drum, and a dust collecting assembly is arranged on the inner wall of the outer cover;

[0007] The dust collecting assembly includes a dust collecting box fixedly mounted on the inner top wall of the outer cover, a dust inlet hole is provided on the side of the dust collecting box, an air suction pump is fixedly mounted on the top of the outer cover, the air inlet end of the air suction pump extends to the top of the dust collecting box, and a filter is provided on the inner wall of the dust collecting box at the lower side of the air inlet end of the air suction pump, a dust lowering port is provided at the bottom end of the dust collecting box, the dust lowering port corresponds to the upper opening position of the mixing drum, a sealing plate for sealing the dust lowering port is rotatably connected to the bottom end of the dust collecting box, and a driving member for driving the sealing plate to open and close is provided on the side wall of the dust collecting box.

[0008] Furthermore, the dumping assembly includes a driving box fixedly mounted on the outer wall of the outer cover, a connecting shaft is rotatably connected to the driving box, a hydraulic rod is embedded in the front of the driving box, a telescopic end of the hydraulic rod extends to the interior of the driving box and is fixedly mounted with a rack, a toothed disc is fixedly mounted on the surface of the connecting shaft, and the rack and the toothed disc are meshed; by setting the dumping assembly, the hydraulic rod is controlled to telescope and drive the rack to move, and based on the meshing of the rack and the toothed disc, the connecting shaft and the mixing drum can be driven to tilt toward the position of the folding curtain, so that the cement inside the mixing drum can be poured out, the discharge is convenient, and the purpose of easy use is further achieved.

[0009] Furthermore, the stirring assembly includes a stirring motor fixedly mounted at the bottom end of the stirring drum, and the output shaft of the stirring motor extends into the interior of the stirring drum and is fixedly mounted with a stirring paddle.

[0010] Furthermore, the stirring assembly includes a stirring motor fixedly mounted at the bottom end of the stirring drum, and the output shaft of the stirring motor extends into the interior of the stirring drum and is fixedly mounted with a stirring paddle.

[0011] Furthermore, the auxiliary positioning assembly includes a fixing plate fixedly installed at the bottom end of the outer cover side wall. There are several fixing plates, and the fixing plates are equidistantly arranged in a circular array on the outer wall of the outer cover. Positioning sticks are inserted on the surface of the fixing plates. The outer cover is placed on the ground at the working position, and the outer cover is supported by the supporting legs, and then the positioning sticks are inserted into the ground. This can achieve the purpose of strengthening the stability of the outer cover and avoid displacement of the entire device during the cement mixing process.

[0012] Furthermore, the driving member includes an electric push rod rotatably mounted on the outer wall of the dust box, and the telescopic end of the electric push rod is rotatably connected to the surface of the sealing plate; the inclination of the sealing plate is controlled by telescoping the electric push rod to control the size of the bottom opening of the dust box.

[0013] Furthermore, an observation window is embedded in the surface of the outer cover, and the material of the observation window is a transparent acrylic plate; by providing the observation window, it is convenient for the operator to observe the mixing state of the cement inside the mixing drum.

[0014] Furthermore, the inner wall of the feed hopper is rotatably connected to a shaft, a baffle is fixedly installed on the surface of the shaft, and a torsion spring is provided on the surface of the shaft for driving the baffle to seal the inner cavity of the feed hopper, one end of the torsion spring is fixed to the surface of the shaft, and the other end of the torsion spring is fixed to the inner wall of the feed hopper; by providing a baffle in the inner cavity of the feed hopper and using the torsion spring to drive the shaft to rotate so that the baffle blocks the inner cavity of the feed hopper, when feeding, the raw materials collide with the baffle, and the baffle flips over to avoid it so that the feeding proceeds smoothly, and after the feeding is completed, the baffle is used to block the feed hopper under the torsion force of the torsion spring to prevent dust from overflowing through the feed hopper to the outside of the outer cover, thereby improving the dustproof effect of the overall device.

[0015] Technical effects and advantages of the utility model:

[0016] 1. The utility model adds raw materials into the mixing drum from the feed hopper, utilizes the mixing motor to drive the mixing paddle to rotate and mix the raw materials, keeps the folding curtain closed during the feeding and mixing process, starts the suction pump, and uses the suction pump to suck the raised dust into the dust collecting box through the dust inlet hole under the action of negative pressure, and then intercepts it in the dust collecting box under the action of the filter screen, thereby reducing the impact of dust on the external environment during the cement mixing and preparation process. In the middle and late stages of cement mixing, the electric push rod is controlled to extend to open the sealing plate, so that the dust in the dust collecting box can be added into the mixing drum for mixing and reuse, that is, there is no need to additionally process the collected dust, and the dust can be utilized, and the applicability is strong.

[0017] 2. The utility model sets a baffle in the inner cavity of the feed hopper, and uses a torsion spring to drive the shaft rod to rotate so that the baffle shields the inner cavity of the feed hopper. When feeding, the raw materials collide with the baffle, and the baffle flips to avoid it so that the feeding can proceed smoothly. After the feeding is completed, the baffle is used to shield the feed hopper to prevent dust from overflowing from the feed hopper to the outside of the outer cover, thereby improving the dustproof effect of the overall device; after the cement preparation is completed, the folding curtain is opened, and a dumping component is set to control the extension and retraction of the hydraulic rod to drive the rack to move. Based on the meshing of the rack and the toothed disc, the connecting shaft and the mixing drum can be driven to tilt toward the position of the folding curtain, so that the cement inside the mixing drum can be poured out, and the discharge is convenient, further achieving the purpose of easy use.

[0018] 3. The utility model can support the outer cover by providing supporting legs; and can enhance the stability of the outer cover by providing positioning sticks which are inserted into the ground, thereby avoiding displacement of the entire device during cement mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the cutaway structure of the outer cover of the utility model;

[0021] Figure 3 This is a schematic diagram of the front section structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the front cross-section structure of the dust collecting box of the utility model;

[0023] Figure 5 It is a schematic diagram of the front section structure of the feed hopper of the utility model.

[0024] The accompanying drawings are marked as follows: 1. outer cover; 2. connecting shaft; 3. mixing drum; 4. folding curtain; 5. feed hopper; 6. dust collection box; 7. dust inlet hole; 8. suction pump; 9. filter screen; 10. sealing plate; 11. drive box; 12. hydraulic rod; 13. rack; 14. gear disc; 15. stirring motor; 16. stirring paddle; 17. support foot; 18. fixing plate; 19. positioning stick; 20. electric push rod; 21. observation window; 22. shaft; 23. shield; 24. torsion spring. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The dust prevention device for a cement mixer involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0026] Reference Figure 1-5 The utility model provides a dustproof device for a cement mixer, comprising an outer cover 1, two supporting feet 17 are symmetrically arranged at the bottom end of the outer cover 1, and an auxiliary positioning component is arranged on the side wall of the outer cover 1.

[0027] The auxiliary positioning assembly includes a fixing plate 18 fixedly mounted on the bottom end of the side wall of the outer cover 1. There are several fixing plates 18, which are equidistantly arranged on the outer wall of the outer cover 1 in a circular array. Positioning inserts 19 are inserted on the surface of the fixing plates 18.

[0028] When installing the entire device, place the outer cover 1 on the ground at the working position, support the outer cover 1 with the support feet 17, and then insert the positioning plug 19 into the ground, so as to achieve the purpose of strengthening the stability of the outer cover 1 and avoid the displacement of the entire device during the cement mixing process. After the installation is completed, the entire device is connected to the external power control system.

[0029] The inner wall of the outer cover 1 is rotatably connected with a connecting shaft 2 , a mixing drum 3 is fixedly installed on the middle section of the connecting shaft 2 , and a dumping assembly is provided between the outer cover 1 and the mixing drum 3 .

[0030] The dumping assembly includes a drive box 11 fixedly mounted on the outer wall of the outer cover 1, a connecting shaft 2 is rotatably connected to the drive box 11, a hydraulic rod 12 is embedded on the front of the drive box 11, a telescopic end of the hydraulic rod 12 extends to the interior of the drive box 11 and is fixedly mounted with a rack 13, a toothed disc 14 is fixedly mounted on the surface of the connecting shaft 2, and the rack 13 and the toothed disc 14 are meshed.

[0031] The hydraulic rod 12 adopts a 40T manual valve produced by Shandong Hengding Company, with a stroke of 300CM and a maximum output power of 40 tons.

[0032] A stirring assembly is provided on the surface of the stirring drum 3 .

[0033] The stirring assembly includes a stirring motor 15 fixedly mounted on the bottom end of the stirring drum 3 . The output shaft of the stirring motor 15 extends into the interior of the stirring drum 3 and is fixedly mounted with a stirring paddle 16 .

[0034] A folding curtain 4 is provided on the surface of the outer cover 1 , and a feed hopper 5 is provided on the top of the outer cover 1 corresponding to the mixing drum 3 .

[0035] In the utility model, raw materials are added into the mixing drum 3 from the feed hopper 5, and the mixing motor 15 drives the mixing paddle 16 to rotate to mix the raw materials.

[0036] Furthermore, after the cement preparation is completed, the folding curtain 4 is opened, and by setting a dumping component, the hydraulic rod 12 is controlled to extend and retract to drive the rack 13 to move. Based on the engagement of the rack 13 with the toothed disc 14, the connecting shaft 2 and the mixing drum 3 can be driven to tilt toward the position of the folding curtain 4, so that the cement inside the mixing drum 3 can be poured out, and the discharge is convenient, further achieving the purpose of easy use.

[0037] An observation window 21 is embedded on the surface of the outer cover 1 , and the observation window 21 is made of a transparent acrylic plate.

[0038] The observation window 21 is provided to facilitate observation of the mixing state of the cement inside the mixing drum 3 .

[0039] The inner wall of the outer cover 1 is provided with a dust collecting assembly.

[0040] The dust collecting assembly includes a dust collecting box 6 fixedly mounted on the inner top wall of the outer cover 1, a dust inlet hole 7 is provided on the side of the dust collecting box 6, an air suction pump 8 is fixedly mounted on the top of the outer cover 1, the air inlet end of the air suction pump 8 extends to the top of the dust collecting box 6, and a filter screen 9 is provided on the inner wall of the dust collecting box 6 at the lower side of the air inlet end of the air suction pump 8, a dust lowering port is provided at the bottom end of the dust collecting box 6, and the dust lowering port corresponds to the upper opening position of the mixing drum 3, a sealing plate 10 for sealing the dust lowering port is rotatably connected to the bottom end of the dust collecting box 6, and a driving member for driving the sealing plate 10 to open and close is provided on the side wall of the dust collecting box 6.

[0041] The driving member includes an electric push rod 20 rotatably mounted on the outer wall of the dust collecting box 6 , and the telescopic end of the electric push rod 20 is rotatably connected to the surface of the sealing plate 10 .

[0042] During the feeding and mixing process, the folding curtain 4 is kept closed, and the suction pump 8 is started. Under the action of negative pressure, the raised dust is sucked into the dust collecting box 6 through the dust inlet hole 7, and then intercepted inside the dust collecting box 6 under the action of the filter screen 9, thereby reducing the impact of dust on the external environment during the cement mixing process.

[0043] Furthermore, in the middle and late stages of cement mixing, by controlling the electric push rod 20 to extend and open the sealing plate 10, the dust inside the dust box 6 can be added into the mixing drum 3 for mixing and reuse, that is, there is no need to additionally process the collected dust, and the dust can be utilized, which has strong applicability.

[0044] The inner wall of the feed hopper 5 is rotatably connected to a shaft rod 22, a baffle 23 is fixedly installed on the surface of the shaft rod 22, and a torsion spring 24 is provided on the surface of the shaft rod 22 to drive the baffle 23 to seal the inner cavity of the feed hopper 5. One end of the torsion spring 24 is fixed to the surface of the shaft rod 22, and the other end of the torsion spring 24 is fixed to the inner wall of the feed hopper 5.

[0045] Furthermore, by setting a baffle 23 in the inner cavity of the feed hopper 5, and using the torsion spring 24 to drive the shaft 22 to rotate so that the baffle 23 blocks the inner cavity of the feed hopper 5, when feeding, the raw material collides with the baffle 23, and the baffle 23 flips over to avoid it so that the feeding can proceed smoothly. After the feeding is completed, under the torsion force of the torsion spring 24, the baffle 23 is used to block the feed hopper 5 to prevent dust from overflowing from the feed hopper 5 to the outside of the outer cover 1, thereby improving the dust-proof effect of the overall device.

[0046] Finally, it should be noted that the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention, and other structures may refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention may be combined with each other.

Claims

1. A dust prevention device for a cement mixer, comprising an outer cover (1), characterized in that: The inner wall of the outer cover (1) is rotatably connected to a connecting shaft (2), a mixing drum (3) is fixedly mounted on the middle section of the connecting shaft (2), a dumping assembly is arranged between the outer cover (1) and the mixing drum (3), a stirring assembly is arranged on the surface of the mixing drum (3), a folding curtain (4) is arranged on the surface of the outer cover (1), a feeding hopper (5) is arranged at the top of the outer cover (1) corresponding to the mixing drum (3), and a dust collecting assembly is arranged on the inner wall of the outer cover (1); The dust collecting assembly comprises a dust collecting box (6) fixedly mounted on the inner top wall of the outer cover (1), a dust inlet hole (7) being provided on the side of the dust collecting box (6), an air suction pump (8) being fixedly mounted on the top of the outer cover (1), an air inlet end of the air suction pump (8) extending to the top of the dust collecting box (6), and a filter screen (9) being provided on the inner wall of the dust collecting box (6) at the lower side of the air inlet end of the air suction pump (8), a dust lowering port being provided at the bottom end of the dust collecting box (6), the dust lowering port corresponding to the upper opening position of the mixing drum (3), a sealing plate (10) being rotatably connected to the bottom end of the dust collecting box (6) for sealing the dust lowering port, and a driving member for driving the sealing plate (10) to open and close is provided on the side wall of the dust collecting box (6).

2. A dust prevention device for a cement mixer according to claim 1, characterized in that: The tipping assembly comprises a driving box (11) fixedly mounted on the outer wall of the outer cover (1); a connecting shaft (2) is rotatably connected to the driving box (11); a hydraulic rod (12) is embedded on the front surface of the driving box (11); a telescopic end of the hydraulic rod (12) extends into the interior of the driving box (11) and is fixedly mounted with a rack (13); a toothed disc (14) is fixedly mounted on the surface of the connecting shaft (2); and the rack (13) and the toothed disc (14) are meshed.

3. The dust prevention device for a cement mixer according to claim 1, characterized in that: The stirring assembly comprises a stirring motor (15) fixedly mounted on the bottom end of the stirring drum (3); the output shaft of the stirring motor (15) extends into the interior of the stirring drum (3) and is fixedly mounted with a stirring paddle (16).

4. The dust prevention device for a cement mixer according to claim 1, characterized in that: Two supporting feet (17) are symmetrically arranged at the bottom end of the outer cover (1), and an auxiliary positioning component is arranged on the side wall of the outer cover (1).

5. A dust prevention device for a cement mixer according to claim 4, characterized in that: The auxiliary positioning assembly comprises a fixing plate (18) fixedly mounted on the bottom end of the side wall of the outer cover (1), the fixing plates (18) being in a plurality and being arranged in a circular array at equal distances on the outer wall of the outer cover (1), and a positioning plug (19) being inserted on the surface of the fixing plate (18).

6. The dust prevention device for a cement mixer according to claim 1, characterized in that: The driving member comprises an electric push rod (20) rotatably mounted on the outer wall of the dust collecting box (6), and the telescopic end of the electric push rod (20) is rotatably connected to the surface of the sealing plate (10).

7. The dust prevention device for a cement mixer according to claim 1, characterized in that: An observation window (21) is embedded on the surface of the outer cover (1), and the observation window (21) is made of a transparent acrylic plate.

8. The dust prevention device for a cement mixer according to claim 1, characterized in that: The inner wall of the feed hopper (5) is rotatably connected to a shaft (22), a baffle (23) is fixedly installed on the surface of the shaft (22), and a torsion spring (24) is provided on the surface of the shaft (22) for driving the baffle (23) to seal the inner cavity of the feed hopper (5), one end of the torsion spring (24) is fixed to the surface of the shaft (22), and the other end of the torsion spring (24) is fixed to the inner wall of the feed hopper (5).

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