Dust settling equipment for concrete production

Abstract

The invention relates to the field of dust settling, and discloses a dust settling device for concrete production, which comprises a feeding mechanism, the feeding mechanism comprises two symmetrically arranged revolving doors, each revolving door has a fan-shaped cross section, a cement putting cavity is arranged in each revolving door, and the cement putting cavities penetrate through the arc sides of the fan-shaped cross sections of the revolving doors; the distance between the rotating centers of the two rotating doors is equal to the diameter of the fan-shaped section, the two rotating doors are opened and closed through vertical rotation, and a cutting unit is arranged below the two rotating doors; during use, the cement throwing area faces upwards, bagged cement is put into the cement throwing area, the two rotating doors rotate downwards at the same time until an opening of the cement throwing area faces downwards, the cutting unit cuts the cement bag open, and the cement is poured out of the cement bag; when concrete is stirred, the upper sides of the two rotating doors rotate to be flush. The device is not limited by the environment temperature and still has a good dust removal effect.

Description

Technical Field

[0001] The invention relates to the field of dust settling, in particular to dust settling equipment for concrete production. Background Art

[0002] In the process of concrete production, a large amount of dust is often generated. After the dust is dispersed, it will have a negative impact on the health of the workers. In the existing technology, sprinkling water to reduce dust is a common and convenient way to remove dust, but this method relies on a humid environment and a suitable temperature. If the ambient temperature is high, the water evaporates quickly, and the dust will quickly turn into dust after dehydration. If the ambient temperature is low, the water will easily freeze in the water pipe and cannot be sprayed out.

[0003] Therefore, there is a need for a dust settling device that is not limited by ambient temperature and still has a good dust removal effect. Summary of the invention

[0004] The present invention aims to provide dust settling equipment for concrete production, which is not limited by ambient temperature and still has a good dust removal effect.

[0005] To achieve the above object, the present invention adopts the following technical scheme: dust settling equipment for concrete production, including a feeding mechanism, the feeding mechanism including two symmetrically arranged revolving doors, each of which is a fan-shaped cross section, each of which is provided with a cement delivery cavity, the cement delivery cavity runs through one side of the arc of the fan-shaped cross section of the revolving door, the distance between the rotation centers of the two revolving doors is equal to the diameter of the fan-shaped cross section, the two revolving doors are opened and closed by vertical rotation, and a cutting unit is provided under the two revolving doors;

[0006] When in use, the cement delivery area faces upwards, the bagged cement is placed in the cement delivery area, and the two revolving doors rotate downwards at the same time until the opening of the cement delivery area faces downwards, the cutting unit cuts open the cement bag, and the cement is poured out of the cement bag;

[0007] When mixing concrete, the upper sides of the two swing doors rotate until they are flush.

[0008] The beneficial effects of this program are:

[0009] 1. In the concrete production process, cement is the main source of dust because it is an extremely fine powder material and is very easy to fly when poured; therefore, this solution mainly treats dust during the cement feeding process. Through the revolving door, the dust is controlled in a closed space, and then the dust is centrally treated through natural sedimentation and other methods, which controls the range of dust flying and ensures the efficiency of dust treatment.

[0010] 2. Since cement is usually packaged in bags (i.e., cement is packaged in cement bags), a large amount of dust will be generated when the bags are cut open and poured out. Therefore, in this solution, the bagged cement is first brought into the equipment through the cement delivery cavity of the revolving door. At this time, the gap between the upper ends of the two revolving doors gradually narrows, and then the cutting unit is used. At this time, the range of dust flying is limited to the inside of the equipment, thereby avoiding the harm of dust to the human body; finally, rotate until the upper sides of the two revolving doors are flush and the gap disappears, and mix the concrete; other coarse aggregates and fine aggregates of the concrete can be added to the mixer from other feeding ports, and can also be added in advance from the feeding mechanism of the present invention.

[0011] Furthermore, a barbed hook is provided in the cement delivery area; after the bagged cement is put into the cement delivery area, the barbed hook is inserted into the cement bag; when the cement delivery area is opened downward, the cement bag is hung on the barbed hook.

[0012] Furthermore, the edge line of the barbed hook includes an inwardly concave arc edge and an outwardly convex arc edge, the inwardly concave arc edge faces the rotation center of the corresponding revolving door, and the outwardly convex arc edge is away from the rotation center of the corresponding revolving door.

[0013] Furthermore, the lower side of the cement delivery cavity is a support plate, which is used to support bagged cement, and a plurality of barbed hooks are arranged on the support plate.

[0014] Furthermore, a plurality of barbed hooks are arranged in a V shape on the support plate.

[0015] Furthermore, the cement delivery area is a fan-shaped section with an angle less than 45°; each revolving door includes a lower closing portion, which is a fan-shaped section; when the cement delivery area faces upward, the two lower closing portions cooperate to close the revolving door.

[0016] Furthermore, the cutting unit includes a cutting motor and a cutting wheel, the output shaft end of the cutting motor is connected to the center of the cutting wheel, and the cutting wheel is vertically arranged below the middle of the two revolving doors.

[0017] Furthermore, the feeding mechanism also includes a feeding barrel and a negative pressure device that are connected to each other, and a filter screen is provided at the connection position; two revolving doors are arranged above the feeding barrel, and the lower end of the feeding barrel is connected to the stirring area, and a rotating plate is provided at the lower end of the feeding barrel. When the rotating plate is arranged vertically, the lower end of the feeding barrel is opened; when the lower end of the feeding barrel is arranged horizontally, the lower end of the feeding barrel is closed, and the negative pressure device is started. The negative pressure device sucks away the dust in the feeding barrel.

[0018] Furthermore, it also includes a transport mechanism, which is arranged above the feeding mechanism. After the transport mechanism transports the bagged cement to above the feeding mechanism, the bagged cement falls into the cement delivery cavity, and the barbed hook pierces the cement bag.

[0019] Furthermore, a baffle is provided on the upper side of one of the revolving doors, and a torsion spring is provided between the baffle and the revolving door. When the revolving door rotates to the level of the support plate, the torsion spring is in an initial state, and the baffle is used to horizontally cover the gap between the upper ends of the two revolving doors.

[0020] This solution also has the following effects:

[0021] 1. After the transport mechanism transports the bagged cement to the top of the feeding mechanism, the bagged cement falls into the cement delivery cavity, and the barbed hooks pierce the cement bag; the revolving door rotates downward until the support plate is horizontal, driving the barbed hooks of the two revolving doors to approach each other, and the barbed hooks slide at the bottom of the cement bag, and the top of the barbed hook gradually penetrates into the cement bag, so that the barbed hooks are more firmly inserted into the bagged cement; in this process, the lower closing parts of the two revolving doors cooperate with each other to close the discharge port of the equipment.

[0022] 2. After the support plate is horizontal, the revolving door continues to rotate downward, and the barbed hooks of the two revolving doors move away from each other. The barbed hooks pull the bottom of the bagged cement to make the bagged cement tight, so that the cutting wheel can quickly cut the bottom of the bagged cement and the cement in the cement bag can be quickly poured out from the incision. Since the barbed hooks hook the cement bag, the cement bag will not slide down, so that the cement and the cement bag can be separated more quickly, which is also convenient for the later recovery of the cement bag and prevents the cement bag from being stirred into the concrete.

[0023] 3. Before the upper surfaces of the two revolving doors are completely flush, there is still a gap between the two revolving doors, which causes dust to float out; therefore, in order to ensure that when the cutting wheel cuts the bagged cement, the upper surface of the revolving door is flush and the discharge port is closed, the sector angle of the cement delivery area should not be too large, and the process from "support plate horizontal" to "revolving door upper surface flush" should be as short as possible to reduce the risk of dust emission, so the sector cross-section angle of the cement delivery area is limited to less than 45°;

[0024] In order to facilitate the next bag of cement to fall smoothly into the cement delivery chamber, the revolving door needs to be rotated upward by a sufficient angle. At this time, a gap will be generated between the support plates below the two cement delivery areas, and the dust generated by the previous bag of cement will float out from this gap. Therefore, this solution adds a lower closing part below the cement delivery area to fill the gap between the support plates to prevent the dust generated by the previous bag of cement from floating out.

[0025] In addition, in order to further close the "gap between the two revolving doors before the upper surfaces of the two revolving doors are completely flush", this solution is provided with a baffle on the upper side of one revolving door. When the revolving door rotates to the horizontal position of the support plate, the gap between the upper ends of the two revolving doors is the first temporary gap. The length of the baffle is greater than the width of the first temporary gap, so as to cover the first temporary gap. The end of the baffle rests on the other revolving door to prevent dust from overflowing. At the same time, a torsion spring is added to adapt to the change in the angle between the baffle and the revolving door. If the baffle prevents the bagged cement from falling vertically into the cement delivery cavity, the bagged cement can fall into the cement delivery cavity through a parabolic trajectory.

[0026] 4. When a bag of cement is placed into the equipment, the revolving door rotates upward to receive the next bag of cement.

[0027] 5. When there is a lot of dust in the feeding barrel, rotate the rotating plate to horizontal, isolate the feeding barrel and the stirring area below, and use negative pressure equipment to suck away the dust in the feeding barrel.

[0028] 6. When the barbed hooks scrape the cement bag, the V-shaped arrangement of the barbed hooks can prevent the holes on the cement bag from being connected, thereby ensuring that after the cutting wheel cuts the bagged cement, the barbed hooks can hook the cement bag to prevent the cement bag from mixing into the cement, thereby ensuring the quality of the concrete. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is the front view of Example 1;

[0030] Figure 2 A three-dimensional diagram of the revolving door of Example 1;

[0031] Figure 3 is a cross-sectional view of the feeding mechanism in state 1 of embodiment 1;

[0032] Figure 4 It is a cross-sectional view of the feeding mechanism in state 2 of embodiment 1;

[0033] Figure 5 It is a cross-sectional view of the feeding mechanism in state 3 of embodiment 1;

[0034] Figure 6 It is a top view schematic diagram of the arrangement of the barbed hooks of Example 1;

[0035] Figure 7 It is a state 1 front view of embodiment 2;

[0036] Figure 8 It is a state 1 front view of embodiment 2;

[0037] Fig. 9 This is the state three main view of Example 2. DETAILED DESCRIPTION

[0038] The following is further described in detail through specific implementation methods:

[0039] The figure marks in the drawings of the specification include: feeding barrel 1, filter screen 11, rotating plate 12, rotating shaft 13, protective shell 14, cutting wheel 15, cutting gear 16, connecting shaft 17, revolving door 2, feeding rotating shaft 21, shell 22, cement delivery chamber 23, top plate 24, support plate 25, barbed hook 26, lower closing part 27, negative pressure equipment 3, conveyor belt 4, bagged cement 5, baffle 6, torsion spring 7.

[0040] Example 1

[0041] Example 1 is basically as Figure 1-Figure 6 Shown: Dust settling equipment for concrete production, including a feeding mechanism, such as Figure 1 As shown, the feeding mechanism also includes a feeding bucket 1 and a negative pressure device 3 which are interconnected. The negative pressure device 3 is a fan. A vent is opened on the side of the feeding bucket 1. A filter 11 is bolted to the vent. The filter 11 is used to filter large particles in the feeding bucket 1 to prevent large particles from clogging and affecting the operation of the fan.

[0042] The lower end of the feeding barrel 1 is connected to the stirring area. The lower end of the feeding barrel 1 is provided with a rotating plate 12 and a rotating shaft 13. The rotating plate 12 is arranged in the feeding barrel 1. The rotating plate 12 is used to connect or separate the feeding barrel 1 and the stirring area. The rotating shaft 13 is welded to the rotating plate 12. The end of the rotating shaft 13 passes through the feeding barrel 1. The end of the rotating shaft 13 is in a bow-tie shape. The rotating shaft 13 is rotatably connected to the feeding barrel 1 and is provided with damping, so as to facilitate manual rotation of the rotating shaft 13. When the rotating plate 12 is arranged vertically, the lower end of the feeding barrel 1 is opened; when the lower end of the feeding barrel 1 is arranged horizontally, the lower end of the feeding barrel 1 is closed, and the negative pressure device 3 is started. The negative pressure device 3 sucks away the dust in the feeding barrel 1.

[0043] A feeding port is provided above the feeding barrel 1, and two symmetrically arranged revolving doors 2 are provided at the feeding port position. Each revolving door 2 includes a feeding motor, a feeding shaft 21 and a shell 22 with a fan-shaped cross section. The output shaft of the feeding motor (not shown in the figure) is key-connected with the feeding shaft 21. The feeding shaft 21 is arranged at the rotation center position of the shell 22 and is welded to the shell 22. The distance between the rotation centers of the two revolving doors 2 is equal to the diameter of the fan-shaped cross section. The two revolving doors 2 are opened and closed by vertical rotation. Figure 2-Figure 4 The housing 22 has a cement delivery cavity 23 with a fan-shaped cross section, the angle of the fan-shaped cross section is less than 45°, the cement delivery cavity 23 passes through one side of the arc of the fan-shaped cross section of the housing 22, the housing 22 includes a top plate 24 and a support plate 25, the top plate 24 is arranged on the upper side of the cement delivery cavity 23, and also arranged on the upper side of the revolving door 2, the support plate 25 is arranged on the lower side of the cement delivery cavity 23, and the area structure from the lower surface of the support plate 25 to the lower surface of the entire revolving door 2 is a lower closed portion 27, and the lower closed portion 27 is a fan-shaped cross section.

[0044] like Figure 3 As shown, a plurality of barbed hooks 26 are welded on the support plate 25, and the edge lines of the barbed hooks 26 include an inner concave arc edge and an outer convex arc edge, the inner concave arc edge faces the rotation center of the corresponding revolving door 2, and the outer convex arc edge is away from the rotation center of the corresponding revolving door 2; Figure 6 As shown, a plurality of barbed hooks 26 are arranged on the support plate 25 in a V shape.

[0045] like Figure 4 , Figure 5 As shown, a cutting unit is provided under the two revolving doors 2, and the cutting unit includes a protective shell 14 (only the cutting wheel 15 and part of the protective shell 14 are shown), a cutting motor and a cutting wheel 15. The protective shell 14 and the cutting motor are bolted to the inner wall of the feeding barrel 1, and the protective shell 14 extends from the inner wall of the feeding barrel 1 to the bottom between the two revolving doors 2 and is rotatably connected to a cutting gear 16. The output shaft of the cutting motor and the cutting gear 16 are connected by chain power. A connecting shaft 17 is horizontally welded to the center of the cutting gear 16, and the end of the connecting shaft 17 is welded to the center of the cutting wheel 15, and the end of the output shaft of the cutting motor is welded to the center of the cutting wheel 15. The cutting wheel 15 is vertically arranged directly below the center of the two revolving doors 2.

[0046] The use of dust settling equipment for concrete production is as follows:

[0047] 1. The dust settling equipment for concrete production is switched to state 1, the lower surfaces of the lower closing parts 27 of the two revolving doors 2 are flush, the cement delivery area faces upward, the two lower closing parts 27 cooperate to close the revolving doors 2, the bagged cement 5 is placed in the cement delivery chamber 23, and the barbed hook 26 pierces the cement bag;

[0048] 2. The dust settling equipment for concrete production is switched to state 2, the revolving door 2 rotates downward until the support plate 25 is horizontal, the cement delivery area is opened downward, and the barbed hooks 26 of the two revolving doors 2 are driven to approach each other, the barbed hooks 26 slide at the bottom of the cement bag, and the top of the barbed hooks 26 gradually penetrates into the cement bag at the same time, so that the barbed hooks 26 are more firmly inserted into the bagged cement 5; in this process, the lower closing parts 27 of the two revolving doors 2 cooperate with each other to close the discharge port of the equipment.

[0049] 3. The dust settling equipment for concrete production switches to state three, the revolving door 2 continues to rotate downward, the barbed hooks 26 of the two revolving doors 2 move away from each other, the barbed hooks 26 pull the bottom of the bagged cement 5 to make the bagged cement 5 tight, so that the cutting wheel 15 can quickly cut the bottom of the bagged cement 5, so that the cement in the cement bag can be quickly poured out from the incision. Since the barbed hooks 26 hook the cement bag, the cement bag will not slide down, so that the cement and the cement bag can be separated more quickly, which is also convenient for the later recovery of the cement bag and prevents the cement bag from being stirred into the concrete.

[0050] Example 2

[0051] Example 2 is based on Example 1: Figure 7-Figure 9 As shown, it also includes a transportation mechanism, which is a conveyor belt 4. The conveyor belt 4 is a prior art and is not described in detail. The transportation mechanism is arranged above or obliquely above the feeding mechanism. After the transportation mechanism transports the bagged cement 5 to the top of the feeding mechanism, the bagged cement 5 falls into the cement delivery cavity 23, and the barbed hook 26 pierces the cement bag.

[0052] A baffle plate 6 is provided on the upper side of the right revolving door 2, and a torsion spring 7 is provided between the baffle plate and the top plate 24 of the revolving door 2. Figure 8 As shown, when the revolving door 2 rotates to the level of the support plate 25, the torsion spring 7 is in the initial state, and the baffle 6 is used to horizontally cover the gap between the upper ends of the two revolving doors 2; Fig. 9 As shown, since the baffle plate and the top plate 24 are rotationally connected via the torsion spring 7, the baffle plate can still cover the gap when the revolving door 2 continues to rotate downward.

[0053] In order to ensure that the bagged cement 5 falls into the cement delivery cavity 23 without interfering with the baffle, the bagged cement 5 needs to be Figure 7 The direction of the shear head is shown as a parabola.

[0054] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Dust settling equipment for concrete production, characterized by: It includes a feeding mechanism, which includes two symmetrically arranged revolving doors, each of which is a fan-shaped cross section, each of which is provided with a cement delivery cavity, the cement delivery cavity runs through one side of the arc of the fan-shaped cross section of the revolving door, the distance between the rotation centers of the two revolving doors is equal to the diameter of the fan-shaped cross section, the two revolving doors are opened and closed by vertical rotation, and a cutting unit is provided under the two revolving doors; When in use, the cement delivery area faces upwards, the bagged cement is placed in the cement delivery area, and the two revolving doors rotate downwards at the same time until the opening of the cement delivery area faces downwards, the cutting unit cuts open the cement bag, and the cement is poured out of the cement bag; When mixing concrete, the upper sides of the two swing doors rotate until they are flush.

2. The dust settling equipment for concrete production according to claim 1, characterized in that: Barbed hooks are arranged in the cement delivery area; after the bagged cement is put into the cement delivery area, the barbed hooks are inserted into the cement bags; when the opening of the cement delivery area faces downward, the cement bags are hung on the barbed hooks.

3. The dust settling equipment for concrete production according to claim 2, characterized in that: The edge line of the barbed hook includes an inwardly concave arc edge and an outwardly convex arc edge, the inwardly concave arc edge faces the rotation center of the corresponding revolving door, and the outwardly convex arc edge is away from the rotation center of the corresponding revolving door.

4. The dust settling equipment for concrete production according to claim 3, characterized in that: The lower side of the cement delivery cavity is a support plate, which is used to support bagged cement, and a plurality of barbed hooks are arranged on the support plate.

5. The dust settling equipment for concrete production according to claim 4, characterized in that: A plurality of barbed hooks are arranged in a V shape on a support plate.

6. The dust settling equipment for concrete production according to claim 5, characterized in that: The cement delivery area is a fan-shaped section with an angle less than 45 degrees; each revolving door includes a lower closing part, which is a fan-shaped section; when the cement delivery area faces upward, the two lower closing parts cooperate to close the revolving door.

7. The dust settling equipment for concrete production according to claim 6, characterized in that: The cutting unit comprises a cutting motor and a cutting wheel. The output shaft end of the cutting motor is connected to the center of the cutting wheel. The cutting wheel is vertically arranged below the middle of the two revolving doors.

8. The dust settling equipment for concrete production according to claim 7, characterized in that: The feeding mechanism also includes a feeding barrel and a negative pressure device that are connected to each other, and a filter screen is provided at the connection position; two revolving doors are arranged above the feeding barrel, and the lower end of the feeding barrel is connected to the stirring area, and a rotating plate is provided at the lower end of the feeding barrel. When the rotating plate is arranged vertically, the lower end of the feeding barrel is opened; when the lower end of the feeding barrel is arranged horizontally, the lower end of the feeding barrel is closed, and the negative pressure device is started. The negative pressure device sucks away the dust in the feeding barrel.

9. The dust settling equipment for concrete production according to claim 8, characterized in that: The utility model also comprises a transport mechanism, which is arranged above the feeding mechanism. After the transport mechanism transports the bagged cement to above the feeding mechanism, the bagged cement falls into the cement delivery cavity, and the barbed hook pierces the cement bag.

10. The dust settling equipment for concrete production according to claim 9, characterized in that: A baffle is provided on the upper side of one of the revolving doors, and a torsion spring is provided between the baffle and the revolving door. When the revolving door rotates to the level of the supporting plate, the torsion spring is in the initial state, and the baffle is used to horizontally cover the gap between the upper ends of the two revolving doors.

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