Resistance reducing device based on cement kiln preheater system

Abstract

The utility model relates to the field of cement kilns, and discloses a resistance reducing device based on a cement kiln preheater system, which comprises a mixing pipe, a flow guide pipe is arranged at the rear end of the mixing pipe, a flow dividing pipe is arranged at the bottom end of the flow guide pipe, a spiral blanking tank is arranged at the left end of the flow dividing pipe, and a driving mechanism is arranged at the bottom end of the flow dividing pipe. The driving mechanism comprises a fixing frame, the top end of the fixing frame is fixedly connected to the bottom end of the flow dividing pipe, a sliding sleeve is slidably connected to the inner wall of the fixing frame, a sliding plate is slidably connected to the interior of the sliding sleeve, a hedging plate is fixedly connected to the top end of the sliding plate, and an inclined plate is rotatably connected to the inner wall of the flow dividing pipe. According to the utility model, through the arrangement of the adjustable hedging plate and the inclined plate, when the flow rate of high-temperature waste gas is too high, the hedging plate can be adjusted downwards to reserve more buffer space for the high-temperature waste gas, and when the flow rate of the waste gas is too low, the hedging plate can be adjusted upwards to drive the inclined plate to incline so as to reduce the resistance when the waste gas is shunted.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement kiln field especially relates to a resistance reducing device based on cement kiln preheater system. BACKGROUND

[0002] Cement kiln preheater is one of important equipment in cement production process, and the main role is to utilize the high temperature exhaust gas of kiln tail to preheat raw material, improves thermal efficiency, reduces energy consumption, and usually a group of preheaters will be provided with multiple spiral down feed tanks, at this moment, it needs to use the shunt pipe to realize shunting, because the internal inclination angle of shunt pipe is big, in order to guarantee the smooth flow of hot gas in the device, usually needs to set up resistance reducing device in the shunt pipe to guide hot gas flow.

[0003] The existing resistance reducing device generally guides flow plate, and the inclination angle of flow plate itself is difficult to adjust, however, in the cement production process, the high temperature exhaust gas is not uniform and continuous, so the flow plate with fixed angle is difficult to adapt to different flow rates of high temperature exhaust gas, and the overall device has poor applicability when in use, therefore, the resistance reducing device based on cement kiln preheater system is proposed to solve the above problems. SUMMARY

[0004] In order to make up for the above shortcomings, the utility model provides a resistance reducing device based on cement kiln preheater system, aiming at improving the problem of "using flow guide plate to realize resistance reduction is effective, but cannot adapt to different flow rates of high temperature exhaust gas" in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a resistance reducing device based on cement kiln preheater system, including mixing pipe, the rear end of mixing pipe is installed with flow guide pipe, the bottom end of flow guide pipe is installed with shunt pipe, the left end of shunt pipe is installed with spiral down feed tank, the bottom end of shunt pipe is provided with driving mechanism, the driving mechanism includes fixed frame, the top end of fixed frame is fixedly connected at the bottom end of shunt pipe, the inner wall of fixed frame is slidably connected with sliding sleeve, the inside of sliding sleeve is slidably connected with sliding plate, the top end of sliding plate is fixedly connected with counter plate, the inner wall of shunt pipe is rotatably connected with inclined plate, the top end of inclined plate is connected with the bottom end of counter plate, the inner wall of sliding sleeve is provided with buffer assembly.

[0006] Further description of the above technical scheme:

[0007] The top end of inclined plate is rotatably connected with sliding block, the bottom end of counter plate is provided with sliding groove, and the sliding block slides in the inner wall of sliding groove.

[0008] Further description of the above technical scheme:

[0009] The driving mechanism further comprises a threaded block which slides on the inner wall of the fixed frame, a top end of the threaded block is hinged with a hinge rod, and a top end of the hinge rod is hinged at a bottom end of the sliding sleeve.

[0010] As a further description of the above technical solution:

[0011] A double-head motor is mounted on the inner wall of the fixed frame, a left end of an output shaft of the double-head motor is mounted with a threaded rod, and the threaded rod and the threaded block are in threaded connection.

[0012] As a further description of the above technical solution:

[0013] The threaded block, the hinge rod and the threaded rod are provided in multiple groups, and the multiple groups of the threaded block, the hinge rod and the threaded rod are symmetrically arranged with the center line of the double-head motor as the symmetric axis.

[0014] As a further description of the above technical solution:

[0015] The buffer assembly comprises a sliding rod, a buffer spring and a protection block, a bottom end of the sliding rod is fixedly connected to the inner wall of the sliding sleeve, and the sliding plate slides on the outer wall of the sliding rod.

[0016] As a further description of the above technical solution:

[0017] A top end of the buffer spring is fixedly connected to the bottom end of the sliding plate, and a bottom end of the buffer spring is fixedly connected to the bottom end of the inner wall of the sliding sleeve.

[0018] As a further description of the above technical solution:

[0019] A bottom end of the protection block is fixedly connected to the bottom end of the inner wall of the sliding sleeve.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1. In the utility model, when the high-temperature waste gas flow speed is too fast, the adjustable baffle plate and the inclined plate are adjusted downward to reserve more buffer space for the high-temperature waste gas; when the high-temperature waste gas flow speed is too slow, the baffle plate is adjusted upward to drive the inclined plate to incline and reduce the resistance of the high-temperature waste gas flow, and the overall device has good applicability in use.

[0022] 2. In the utility model, when the high-temperature waste gas with high flow speed directly impacts the baffle plate, the baffle plate extrudes the sliding plate to move downward; when the waste gas flow speed decreases, the buffer spring drives the sliding plate to move upward and reset; when the high-temperature waste gas flow speed changes slightly, manual intervention is not required for adjustment, and the overall device is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1It is the three-dimensional structure schematic view of the integral device in the utility model;

[0024] Figure 2 It is the three-dimensional structure section schematic view of the shunt pipe in the utility model;

[0025] Figure 3 It is the three-dimensional structure split schematic view of the impact plate in the utility model;

[0026] Figure 4 It is the three-dimensional structure split schematic view of the sliding sleeve and driving mechanism in the utility model.

[0027] Legend:

[0028] 1, mixing pipe; 2, flow guide pipe; 3, shunt pipe; 4, spiral blanking tank; 5, driving mechanism; 51, fixed frame; 52, double-head motor; 53, threaded rod; 54, threaded block; 55, hinged rod; 6, impact plate; 7, sliding plate; 8, sliding sleeve; 81, sliding rod; 82, buffer spring; 83, protection block; 9, inclined plate; 10, sliding block; 11, sliding groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Refer to Figure 1 , Figure 2 and Figure 4The utility model provides an embodiment: a kind of resistance reduction device based on cement kiln preheater system, including the mixing pipe 1 for providing place for waste gas and raw material mixing, the rear end of mixing pipe 1 is equipped with the flow guide pipe 2 for guiding high-temperature waste gas flow, the bottom end of flow guide pipe 2 is equipped with the shunt pipe 3 for shunting high-temperature waste gas, the left end of shunt pipe 3 is equipped with the spiral down feeder tank 4 for separating high-temperature waste gas and raw material, after high-temperature waste gas and raw material synchronously enter the inside of spiral down feeder tank 4, high-temperature waste gas will move upwards and leave the inside of spiral down feeder tank 4, and raw material will move downwards along the inner wall of spiral down feeder tank 4 and discharge, since spiral down feeder tank 4 is prior art, and personnel in the art can realize, so the case is not described too much, the bottom end of shunt pipe 3 is provided with the drive mechanism 5 for moving sliding sleeve 8, drive mechanism 5 includes the fixed frame 51 for supporting overall drive mechanism 5, the top end of fixed frame 51 is fixedly connected at the bottom end of shunt pipe 3, the inner wall of fixed frame 51 is slidably connected with the sliding sleeve 8 for accommodating sliding plate 7, the inside of sliding sleeve 8 is slidably connected with the sliding plate 7 for supporting counter plate 6, the top end of sliding plate 7 is fixedly connected with the counter plate 6 for directly contacting waste gas and raw material, the inner wall of shunt pipe 3 is rotatably connected with the inclined plate 9 for guiding waste gas flow, the top end of inclined plate 9 is connected with the bottom end of counter plate 6, after high-temperature waste gas drives raw material to enter the inside of shunt pipe 3, it will first contact counter plate 6, then waste gas will flow along the top end of counter plate 6 and remove inclined plate 9 to two sides obliquely, finally it will enter the inside of spiral down feeder tank 4 downwards along the top end of inclined plate 9, the inner wall of sliding sleeve 8 is provided with the buffer assembly for driving sliding plate 7 to adaptively move up and down.

[0031] Referring to Figure 2 - Figure 4The top end of the inclined plate 9 is rotationally connected with a sliding block 10 used for connecting the baffle plate 6 and the inclined plate 9, the bottom end of the baffle plate 6 is provided with a sliding groove 11 used for containing the sliding block 10, the sliding block 10 slides on the inner wall of the sliding groove 11, when the baffle plate 6 moves up and down, the baffle plate 6 will drive the inclined plate 9 to tilt and rotate through the sliding block 10, the driving mechanism 5 further comprises a threaded block 54 used for driving the articulated rod 55 to rotate, the threaded block 54 slides on the inner wall of the fixed frame 51, the top end of the threaded block 54 is articulated with the articulated rod 55 used for pushing the sliding sleeve 8 to move upwards, the top end of the articulated rod 55 is articulated on the bottom end of the sliding sleeve 8, when the threaded block 54 moves to the center position of the fixed frame 51, the threaded block 54 will push the articulated rod 55 to rotate and tilt, the articulated rod 55 rotating and tilting will push the sliding sleeve 8 to move upwards, the inner wall of the fixed frame 51 is installed with a double-head motor 52 used for driving the threaded rod 53 to rotate, the rear end of the output shaft of the double-head motor 52 is installed with the threaded rod 53 used for driving the threaded block 54 to move, the threaded rod 53 and the threaded block 54 are in threaded connection, when the threaded rod 53 rotates, the threaded block 54 will be driven to move forward and backward, the threaded block 54, the articulated rod 55 and the threaded rod 53 are provided in multiple groups, the multiple groups of the threaded block 54, the articulated rod 55 and the threaded rod 53 are symmetrically arranged with the center line of the double-head motor 52 as the axis of symmetry, when the double-head motor 52 works, it will simultaneously drive two groups of the threaded rod 53 to rotate, and the two groups of the threaded rod 53 rotate in the same direction.

[0032] With reference to Figure 2 - Figure 4 The buffer assembly comprises a sliding rod 81 used for supporting the sliding of the sliding plate 7, a buffer spring 82 and a protection block 83, the bottom end of the sliding rod 81 is fixedly connected to the inner wall of the sliding sleeve 8, the sliding plate 7 slides on the outer wall of the sliding rod 81, and since it is limited by the sliding rod 81, the sliding plate 7 will only vertically slide up and down, the top end of the buffer spring 82 is fixedly connected to the bottom end of the sliding plate 7, and the bottom end of the buffer spring 82 is fixedly connected to the bottom end of the inner wall of the sliding sleeve 8, the buffer spring 82 will always push the sliding plate 7 upwards, and the bottom end of the protection block 83 is fixedly connected to the bottom end of the inner wall of the sliding sleeve 8, the maximum distance of the downward movement of the sliding plate 7 can be limited by arranging the protection block 83, so as to protect the buffer spring 82 from being damaged due to excessive extrusion.

[0033] Working principle: when the high-temperature waste gas drives the raw materials to enter the inside of the shunt pipe 3 through the flow guide pipe 2, the high-temperature waste gas and the raw materials will first impact the upper surface of the baffle plate 6, and then the high-temperature waste gas and the raw materials will be shunted to both sides along the upper surface of the baffle plate 6 and flow downwards along the upper surface of the inclined plate 9, so as to prevent the high-temperature waste gas and the raw materials from directly impacting the inside of the shunt pipe 3 and being subjected to greater resistance.

[0034] When it is necessary to adjust the height of the baffle plate 6, the double-head motor 52 can be started to drive the threaded rod 53 to rotate, which drives the threaded block 54 to move, and the threaded block 54 moves forward and backward to extrude the hinged rod 55 to rotate, so that the hinged rod 55 pushes the sliding sleeve 8 to move upward, the sliding sleeve 8 drives the buffer spring 82 to move upward, the buffer spring 82 pushes the sliding plate 7 to move upward, the sliding plate 7 pushes the baffle plate 6 to move upward, so that the sliding plate 7 is closer to the top end of the inner wall of the flow divider pipe 3, and when the baffle plate 6 moves upward, it drives the inclined plate 9 to further tilt, so that the high-temperature waste gas and the raw materials will be subjected to smaller resistance when moving along the upper surfaces of the baffle plate 6 and the inclined plate 9, and when the gas flow rate is low, the resistance can be reduced by adjusting the height of the baffle plate 6.

[0035] When the gas flow rate is large, the gas will push the baffle plate 6 to drive the sliding plate 7 to move downward, so that the sliding plate 7 moves downward to extrude the buffer spring 82 to contract, and the baffle plate 6 moves downward to drive the inclined plate 9 to rotate downward, so that the inclination of the inclined plate 9 can be reduced, and the resistance reduction effect of the inclined plate 9 will be reduced, so that the gas flow rate can be reduced by reducing the resistance reduction effect of the inclined plate 9, so that the gas flow rate can be prevented from being too fast to cause the raw materials to hit and damage the remaining structures inside the whole device.

[0036] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A resistance reduction device based on a cement kiln preheater system, comprising a mixing tube (1), characterized in that: The rear end of the mixing tube (1) is provided with a guide tube (2), the bottom end of the guide tube (2) is provided with a diverter tube (3), the left end of the diverter tube (3) is provided with a spiral feed tank (4), the bottom end of the diverter tube (3) is provided with a driving mechanism (5), the driving mechanism (5) comprises a fixed frame (51), the top end of the fixed frame (51) is fixedly connected to the bottom end of the diverter tube (3), the inner wall of the fixed frame (51) is slidably connected to a sliding sleeve (8), the interior of the sliding sleeve (8) is slidably connected to a slide plate (7), the top end of the slide plate (7) is fixedly connected to a hedging plate (6), the inner wall of the diverter tube (3) is rotatably connected to an inclined plate (9), the top end of the inclined plate (9) is connected to the bottom end of the hedging plate (6), and the inner wall of the sliding sleeve (8) is provided with a buffer assembly.

2. The resistance reducing device based on a cement kiln preheater system according to claim 1, characterized in that: The top end of the inclined plate (9) is rotatably connected to a slider (10), and the bottom end of the hedging plate (6) is provided with a slide groove (11), and the slider (10) slides on the inner wall of the slide groove (11).

3. The resistance reducing device based on a cement kiln preheater system according to claim 1, characterized in that: The driving mechanism (5) further comprises a threaded block (54), the threaded block (54) sliding on the inner wall of the fixed frame (51), the top end of the threaded block (54) being hinged to a hinged rod (55), the top end of the hinged rod (55) being hinged to the bottom end of the sliding sleeve (8).

4. The resistance reducing device based on a cement kiln preheater system according to claim 3, characterized in that: A double-headed motor (52) is installed on the inner wall of the fixed frame (51), a threaded rod (53) is installed on the left end of the output shaft of the double-headed motor (52), and the threaded rod (53) and the threaded block (54) are threadedly connected.

5. The resistance reducing device based on a cement kiln preheater system according to claim 4, characterized in that: The threaded blocks (54), hinged rods (55), and threaded rods (53) are provided in multiple groups, and the multiple groups of threaded blocks (54), hinged rods (55), and threaded rods (53) are symmetrically arranged with the center line of the double-headed motor (52) as the symmetry axis.

6. The resistance reducing device based on a cement kiln preheater system according to claim 1, characterized in that: The buffer assembly comprises a slide rod (81), a buffer spring (82), and a protective block (83); the bottom end of the slide rod (81) is fixedly connected to the inner wall of the sliding sleeve (8), and the slide plate (7) slides on the outer wall of the slide rod (81).

7. The resistance reducing device based on a cement kiln preheater system according to claim 6, characterized in that: The top end of the buffer spring (82) is fixedly connected to the bottom end of the slide plate (7), and the bottom end of the buffer spring (82) is fixedly connected to the bottom end of the inner wall of the sliding sleeve (8).

8. The resistance reducing device based on a cement kiln preheater system according to claim 6, characterized in that: The bottom end of the protective block (83) is fixedly connected to the bottom end of the inner wall of the sliding sleeve (8).

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