Single-side pneumatic deviation rectifying device of vacuum belt conveyor

Abstract

The invention relates to a single-side pneumatic deviation rectifying device of a vacuum belt conveyor. The single-side pneumatic deviation rectifying device comprises a deviation rectifying executing mechanism and a deviation rectifying driving mechanism. The deviation rectifying executing mechanism comprises two groups of deviation rectifying air bags and filter cloth carrier rollers; the two ends of the filter cloth carrier roller are rotationally supported on a first carrier roller bracket and a second carrier roller bracket respectively, the lower end of the first carrier roller bracket is rotationally connected with a rack on one side, and the second carrier roller bracket is mounted on a bracket supporting seat in a manner that the upper and lower parts are limited and can slide back and forth; the bracket supporting seat is fixed on the rack on the other side; a front mounting cavity and a rear mounting cavity are respectively formed in the front side and the rear side of the second carrier roller bracket; the two groups of deviation rectifying air bags are respectively embedded in the front mounting cavity and the rear mounting cavity; air inlet holes of the two groups of deviation rectifying air bags are respectively connected with one ends of two air inlet hoses; the deviation rectifying driving mechanism is used for detecting transverse deviation of the filter cloth in time so as to control the air inlet states of the two sets of air bags, the second carrier roller support drives the filter cloth carrier roller to conduct dip angle adjustment through air driving on the two sides, and automatic deviation rectifying adjustment of the filter cloth is achieved through the acting force between the filter cloth carrier roller and the filter cloth.

Description

Technical Field

[0001] The invention belongs to the technical field of power generation equipment, and in particular relates to a single-side pneumatic deviation correction device for a vacuum belt conveyor. Background Art

[0002] When the power plant is carrying out thermal power generation operation, the gypsum slurry from the absorption tower of the coal-fired unit enters the gypsum cyclone after passing through the absorption tower slurry pump. The concentrated slurry is then dehydrated by a vacuum belt dehydrator. The gypsum is washed while dehydrating to meet the quality requirements of comprehensive utilization of gypsum.

[0003] During the operation of the vacuum belt dehydrator, the correction device plays a vital role in the position of the filter cloth. The existing vacuum belt dehydrator adopts a double-sided correction device, and the correction airbag is controlled by a solenoid valve to control the inflation and deflation of the correction airbag, so as to achieve the correction of the filter cloth. Since the air in the vacuum belt dehydrator area is humid and moisture often falls directly onto the solenoid valve installed on the frame during the dehydration process, causing the solenoid valve to short-circuit and malfunction. If the solenoid valve fails during operation, it will cause the filter cloth to deviate to one side, affecting the dehydration of the gypsum. In severe cases, it will directly damage the filter cloth. The existing correction device is usually a correction device controlled by solenoid valves arranged on both sides. Therefore, the solenoid valve is prone to moisture failure, the filter cloth deviates frequently, correction is difficult, and operation and maintenance are difficult. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a single-side pneumatic deviation-correcting device for a vacuum belt conveyor which has the advantages of simple structure, convenient use, good moisture resistance, and convenient installation and maintenance.

[0005] The above-mentioned object of the present invention is achieved by the following technical solutions:

[0006] A single-side pneumatic deviation correction device for a vacuum belt conveyor, comprising a deviation correction actuator and a deviation correction drive mechanism;

[0007] The deflection correction actuator comprises two groups of deflection correction airbags and filter cloth rollers; the two ends of the filter cloth roller are rotatably supported on the first roller bracket and the second roller bracket respectively, the lower end of the first roller bracket is rotatably connected to a frame on one side of the vacuum belt dehydrator through a rotating shaft, and the second roller bracket is installed on the bracket support seat in a manner of being limited up and down but slidable along the front and rear directions; the bracket support seat is fixed to the frame on the other side of the vacuum belt dehydrator, a front mounting cavity is formed between the front end face of the second roller bracket and the front baffle of the bracket support seat, and a rear mounting cavity is formed between the rear end portion of the second roller bracket and the rear baffle of the bracket support seat; the two groups of deflection correction airbags are respectively embedded in the front mounting cavity and the rear mounting cavity; an air inlet hole is provided at the front end of the front deflection correction airbag, and an air inlet hole is provided at the rear end of the rear deflection correction airbag, and the two air inlet holes are respectively connected to one end of two air inlet hoses;

[0008] The deviation correction drive mechanism is used to timely detect the lateral deviation state of the filter cloth, and control the air intake state of the two sets of deviation correction airbags according to the deviation state, so as to realize the second roller bracket driving the filter cloth roller to adjust the inclination angle through the air drive on both sides, and finally realize the automatic deviation correction adjustment of the filter cloth through the force between the filter cloth roller and the filter cloth.

[0009] The control mechanism that the cam is connected with the control mechanism-based control mechanism, and the control mechanism is a plurality of control mechanisms, and the control mechanism is a plurality of control mechanisms, and the control mechanism is a plurality of control mechanisms, and the plurality of control mechanisms are a plurality of control mechanisms.

[0010] The upper end of the correction valve is welded to the lower part of the hollow cross bar near one end of the filter cloth through a connecting plate. The correction valve is provided with an air inlet, two air outlets and an outwardly extending valve position adjustment rod. The air inlet of the correction valve is connected to the other end of the gas delivery hose, and the two air outlets of the correction valve are respectively connected to the other ends of the two gas hoses of the correction actuator;

[0011] The limit plate is a vertical plate, the upper end of the limit plate is fixedly connected to the outer end of the valve opening adjustment rod, and the inner side of the limit plate is in contact with the edge of the filter cloth.

[0012] Moreover, an oblong bolt insertion hole is provided at the lower part of the second roller bracket. By inserting the untightened bolts into the bolt insertion holes on the bracket support seat and the bolt insertion holes at the lower part of the second roller bracket, the second roller bracket is limited on the bracket support seat in the up and down directions.

[0013] Moreover, the two groups of deviation-correcting airbags both adopt wheel-shaped airbags.

[0014] The advantages and positive effects of the present invention are:

[0015] 1. The unilateral pneumatic deviation correction device of the present invention is arranged on one side of the filter cloth, and is adjusted to a suitable position by a limit device and set to an optimal position. The deviation correction airbag is controlled by contact and non-contact forces. The deviation correction airbag acts on the filter cloth roller to make the filter cloth roller swing a certain angle. The force between the roller and the filter cloth is used to achieve the automatic deviation correction effect of the filter cloth. Compared with the difficulty of adjustment and maintenance of bilateral control, unilateral adjustment has certain advantages.

[0016] 2. The unilateral pneumatic deviation correction device of the present invention is controlled by a pneumatic deviation correction valve, and the deviation correction airbag is directly controlled by the control of the deviation correction valve by the limit plate. Since the pneumatic deviation correction valve is used for control and there are no electronic components, it can play a moisture-proof role during use.

[0017] 3. The unilateral pneumatic deviation correction device of the present invention has a simple structure, is easy to maintain and adjust, and is also convenient to maintain in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structural diagram of the present invention;

[0019] Figure 2 yes Figure 1 A local schematic diagram in the direction of A. DETAILED DESCRIPTION

[0020] The structure of the present invention is further described below with reference to the accompanying drawings and by way of examples. It should be noted that the present examples are descriptive rather than restrictive.

[0021] A vacuum belt conveyor with a single-side pneumatic deviation correction device, see Figure 1-Figure 2 The invention point is: it includes a correction execution mechanism 2 and a correction driving mechanism 1.

[0022] The deviation correction actuator comprises two sets of deviation correction airbags 2.2 and filter cloth rollers 2.1. The two ends of the filter cloth roller are rotatably supported on the first roller bracket and the second roller bracket respectively. The lower end of the first roller bracket is rotatably connected to the frame 4 on one side of the vacuum belt dehydrator through a rotating shaft, wherein the first roller bracket and its installation are not shown in the attached drawings, and the second roller bracket 2.3 is installed on the bracket support seat 2.4 in a manner that it is limited up and down but can slide in the front and rear directions. The upper and lower limit mode of the second roller bracket can be achieved by passing bolts through the bracket support seat and the lower part of the second roller bracket, the bolts are not completely locked, and the bolt passing holes on the second roller bracket are oblong holes. The bracket support seat is fixed on the frame on the other side of the vacuum belt dehydrator, the front end face of the second roller bracket and the front baffle of the bracket support seat form a front installation cavity, and the rear end of the second roller bracket and the rear baffle of the bracket support seat form a rear installation cavity. The two sets of deviation correction airbags are wheel-shaped airbags. Two groups of correcting airbags are respectively embedded in the front installation cavity and the rear installation cavity. An air inlet hole is arranged at the front end of the front correcting airbag, and an air inlet hole is arranged at the rear end of the rear correcting airbag. The two air inlet holes are respectively connected to one end of two air inlet hoses 2.5, and gas is input into the correcting airbag through the air inlet hoses.

[0023] The deviation correction drive mechanism is used to detect the lateral deviation state of the filter cloth in time and control the air intake state of the two groups of airbags according to the deviation state. The deviation correction drive mechanism includes a base 1.1, a vertical rod 1.2, a hollow cross bar 1.7, a connecting block 1.6, a deviation correction valve 1.4, a limit plate 1.3 and a pressure regulating tank 1.5.

[0024] The deflection correction driving mechanism is integrally installed on the same side of the vacuum belt dehydrator and the deflection correction actuator. The base is fixed to the frame of the vacuum belt dehydrator through a support plate. A rod insertion hole is provided at the upper end of the base, and a radial tightening threaded hole is provided. The lower end of the vertical rod is vertically inserted into the rod insertion hole and fixed by a tightening screw installed in the radial tightening threaded hole. The connecting block is staggered with vertical through holes and horizontal through holes, and radial threaded holes are provided on one side of the vertical through hole and one side of the horizontal through hole. The connecting block is fitted with the vertical rod through the vertical through hole, and a tightening screw is installed in the radial threaded hole corresponding to the vertical through hole to achieve a fixed connection between the connecting block and the vertical rod. The hollow cross bar is installed in the horizontal through hole on the connecting block, and the hollow cross bar is arranged horizontally along the filter cloth of the vacuum belt dehydrator and is arranged above the filter cloth 3. A tightening thread is installed in the radial threaded hole corresponding to the horizontal through hole, and the hollow cross bar is fixedly connected to the connecting block. A gas hose 1.8 is installed in the inner hole of the hollow cross bar. A pressure regulating tank is fixedly installed on the end of the hollow cross bar away from the filter cloth, one end of the pressure regulating tank is connected to one end of the gas hose, and the other end of the pressure regulating tank has an external interface connected to the air intake main pipe of the air supply device.

[0025] The upper end of the correction valve is fixed with a connecting plate, and the connecting plate is welded to the lower part of the hollow cross bar near the filter cloth, so that the correction valve is suspended below the hollow cross bar. An air inlet 1.4.1, two air outlets 1.4.2 and a protruding valve position adjustment rod 1.4.3 are arranged on the correction valve. Among them, the two air outlets are located at two opposite sides of the front and back, the air inlet is arranged at the inner side of the correction valve, and the valve position adjustment rod extends outward to the outer side of the correction valve. The valve position adjustment rod has three positions: upper, middle and lower. When the valve position adjustment rod is in the middle position, the air output of the two air outlets is consistent. When the valve position adjustment rod is in the upper position, one air outlet has a high air output and the other air outlet has a low air output. When the valve position adjustment rod is in the lower position, one air outlet has a low air output and the other air outlet has a high air output. The air inlet of the correction valve is connected to the other end of the air supply hose to realize the input of compressed air. The two air outlets of the deviation correction valve are respectively connected to the other ends of the two gas hoses of the deviation correction actuator to deliver compressed air to the two groups of deviation correction air bags.

[0026] The limit plate is a vertical plate, the upper end of the limit plate is fixedly connected to the outer end of the valve opening adjustment rod, and the inner side of the limit plate is in contact with the edge of the filter cloth.

[0027] The working principle of the single-side pneumatic deviation correction device of the vacuum belt conveyor is:

[0028] During the initial operation of the vacuum belt dehydrator, the valve position adjustment lever is in the middle position. At this time, the air intake of the two deviation correction airbags is the same, the second roller bracket is in the middle position, and the filter cloth roller is in the positive horizontal position; when the filter cloth deviates toward the side of the limit plate, it will push the valve position adjustment lever to swing to the upper working position. At this time, the airbag on the left (the left side is the dry material section and the right side is the wet material section) will be inflated, pushing the roller to move to the right, so that the filter cloth is corrected to the opposite side of the limit plate. When the filter cloth deviates toward the side away from the limit plate, the limit plate will be affected by its own power, and the valve position adjustment lever will swing to the lower working position. At this time, the airbag on the right (the left side is the dry material section and the right side is the wet material section) will be inflated, pushing the roller to move to the left, so that the filter cloth is corrected to the side of the limit plate.

[0029] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, those skilled in the art will appreciate that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A single-side pneumatic deviation correction device for a vacuum belt conveyor, characterized in that: It includes a deviation correction actuator and a deviation correction driving mechanism; The deflection correction actuator comprises two groups of deflection correction airbags and filter cloth rollers; the two ends of the filter cloth roller are rotatably supported on the first roller bracket and the second roller bracket respectively, the lower end of the first roller bracket is rotatably connected to a frame on one side of the vacuum belt dehydrator through a rotating shaft, and the second roller bracket is installed on the bracket support seat in a manner of being limited up and down but slidable along the front and rear directions; the bracket support seat is fixed to the frame on the other side of the vacuum belt dehydrator, a front mounting cavity is formed between the front end face of the second roller bracket and the front baffle of the bracket support seat, and a rear mounting cavity is formed between the rear end portion of the second roller bracket and the rear baffle of the bracket support seat; the two groups of deflection correction airbags are respectively embedded in the front mounting cavity and the rear mounting cavity; an air inlet hole is provided at the front end of the front deflection correction airbag, and an air inlet hole is provided at the rear end of the rear deflection correction airbag, and the two air inlet holes are respectively connected to one end of two air inlet hoses; The deviation correction drive mechanism is used to timely detect the lateral deviation state of the filter cloth, and control the air intake state of the two sets of deviation correction airbags according to the deviation state, so as to realize the second roller bracket driving the filter cloth roller to adjust the inclination angle through the air drive on both sides, and finally realize the automatic deviation correction adjustment of the filter cloth through the force between the filter cloth roller and the filter cloth.

2. The vacuum belt conveyor unilateral pneumatic deviation correction device according to claim 1 is characterized in that: The correction driving mechanism is installed as a whole on the side of the vacuum belt dehydrator and the correction actuator; the correction driving mechanism comprises a base, a vertical rod, a hollow cross rod, a connecting block, a correction valve, a limit plate and a pressure regulating tank; the base is fixed to the frame of the vacuum belt dehydrator through a supporting plate; the lower end of the vertical rod is plugged and fixedly connected with the rod plug hole at the upper end of the base; the connecting block is staggered with vertical through holes and horizontal through holes; the connecting block is fixedly fitted with the vertical rod through the vertical through holes; the hollow cross rod is fixed in the horizontal through hole on the connecting block, and the hollow cross rod is arranged horizontally along the filter cloth of the empty belt dehydrator and is arranged above the filter cloth; an air supply hose is installed in the inner hole of the hollow cross rod, and a pressure regulating tank is fixedly installed on the end of the hollow cross rod away from the filter cloth, one end of the pressure regulating tank is connected to one end of the air supply hose, and the other end of the pressure regulating tank has an external interface connected to the air intake main pipe of the air supply device; The upper end of the correction valve is welded to the lower part of the hollow cross bar near one end of the filter cloth through a connecting plate. The correction valve is provided with an air inlet, two air outlets and an outwardly extending valve position adjustment rod. The air inlet of the correction valve is connected to the other end of the gas delivery hose, and the two air outlets of the correction valve are respectively connected to the other ends of the two gas hoses of the correction actuator; The limit plate is a vertical plate, the upper end of the limit plate is fixedly connected to the outer end of the valve opening adjustment rod, and the inner side of the limit plate is in contact with the edge of the filter cloth.

3. The single-side pneumatic deviation correction device for a vacuum belt conveyor according to claim 1 is characterized in that: An oblong bolt insertion hole is provided at the lower part of the second roller bracket. By inserting the untightened bolts into the bolt insertion holes on the bracket support seat and the bolt insertion holes at the lower part of the second roller bracket, the second roller bracket can be limited on the bracket support seat in the up and down directions.

4. The single-side pneumatic deviation correction device for a vacuum belt conveyor according to claim 1 is characterized in that: The two groups of deviation-correcting airbags both adopt wheel-shaped airbags.

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