Rotary kiln preheater flap valve

Abstract

The utility model discloses a flap valve for a preheater of a rotary kiln, which relates to the technical field of preheaters of rotary kilns and has the advantages that the position of a heavy hammer can be adjusted so as to adjust the discharging amount of a discharging pipe. According to the technical scheme, the device is characterized in that the lower ends of two rectangular boxes are connected with each other, conical boxes are arranged at the connected ends of the two rectangular boxes, the lower ends of the conical boxes communicate with a lower cylinder, the box walls of one sides of the two rectangular boxes are fixed to the outer wall of the upper cylinder, and rotating shafts are rotationally connected to the opposite box walls of the two rectangular boxes correspondingly; a plurality of extending rods are fixedly connected to the rotating shafts, the extending rods located on the same rotating shaft are connected through a valve plate, the two ends of the two rotating shafts extend out of the rectangular box, and heavy hammers are arranged at the extending ends of the two rotating shafts; the counter weight enables the ends, away from the rotating shaft, of the two valve plates to abut against each other and enables the plate faces of the valve plates to abut against the lower cylinder wall of the upper cylinder, and an adjusting piece for adjusting the position of the counter weight is arranged on the rotating shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kiln preheaters, and specifically relates to a flap valve for a rotary kiln preheater. Background Art

[0002] In cement production enterprises, the flap valve of the blanking pipe of the preheater for the rotary kiln is a device that locks air and feeds materials during normal operation. During production, according to the gravity difference between the materials in the blanking pipe and the gravity of the valve plate plumb bob, the valve plate will constantly flash up and down.

[0003] Chinese Patent with the publication number CN203322308U discloses a five-stage flap valve for a cement rotary kiln preheater with good flashing performance, which includes a valve body, a left valve plate, a left connecting rod, a left valve shaft, a left plumb bob handle, a left plumb bob, a right valve plate, a right connecting rod, a right valve shaft, a right plumb bob handle, and a right plumb bob. A valve opening is provided on the valve body. The left valve shaft and the right valve shaft are respectively arranged on the left and right sides of the valve body. V-shaped cross-section grooves extending along the axial direction are opened at both ends of the left valve shaft. Correspondingly, V-shaped cross-section protrusions extending along the axial direction are provided on the valve body below the V-shaped cross-section grooves of the left valve shaft. The tip of the V-shaped cross-section protrusion faces upward and supports against the bottom of the V-shaped cross-section groove. Similarly, the right valve shaft also has this support structure. The left valve plate and the right valve plate are in a V-shaped fit with the opening facing upward to jointly close the valve opening.

[0004] However, the above existing structure does not have a structure for adjusting the position of the plumb bob, and thus cannot adjust the size of the blanking volume of the blanking pipe. Therefore, the applicant has developed a new technical solution during the actual production process to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a flap valve for a rotary kiln preheater, which has the advantage of being able to adjust the position of the plumb bob, and thus adjust the size of the blanking volume of the blanking pipe.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a rotary kiln preheater flap valve, comprising a valve body, wherein the valve body comprises two vertically distributed cylinders and two rectangular boxes extending obliquely upward, the lower ends of the two rectangular boxes are connected to each other, and the two rectangular boxes are provided with a conical box at the ends connected to each other, the lower end of the conical box is communicated with the cylinder below, one side box wall of the two rectangular boxes is fixed to the outer wall of the upper cylinder, the opposite box walls of the two rectangular boxes are rotatably connected with a rotating shaft, a plurality of extension rods are fixedly connected to the rotating shaft, and the extension rods located on the same rotating shaft are connected through valve plates, the two ends of the two rotating shafts extend out of the rectangular boxes, and a heavy hammer is provided at the extended end, the heavy hammer makes the ends of the two valve plates away from the rotating shaft contact each other and makes the plate surface of the valve plate contact the lower cylinder wall of the upper cylinder, and the rotating shaft is provided with an adjusting member for adjusting the position of the heavy hammer.

[0008] By adopting the above technical solution, the adjusting member adjusts the position of the weight, so that the pressure of the valve plate surface against the cylinder wall at the lower end of the cylinder increases or decreases, thereby increasing or decreasing the weight of the material that opens the valve plate, thereby playing a role in adjusting the amount of material discharged from the discharge pipe.

[0009] Preferably, the outer wall of the rectangular box is provided with a support platform, and the support platform is provided with a fixed block. The rotating shaft is rotatably connected to the fixed block at one end passing through the rectangular box and the other end passes through the fixed block. A turntable is coaxially fixedly provided at the end of the rotating shaft passing through the fixed block, and a fan-shaped plate is provided on the turntable, and the weight is fixed on the fan-shaped plate.

[0010] Preferably, the adjusting member includes a rocker arm arranged on the side of the fan-shaped plate facing the fixed block, the rocker arm is fixed to the fan-shaped plate by a plurality of screws, the fan-shaped plate has a plurality of adjustment holes for the screws to pass through in an array along the center of the fan-shaped plate, one end of the screw passes through the adjustment hole and is threadedly connected to the rocker arm, and the weight is arranged on the rocker arm.

[0011] Preferably, the swing arm is provided with limiting rings at both ends of the weight, and a locking rod is threadedly connected to the outer wall of each limiting ring, and one end of the locking rod passes through the limiting ring and contacts the outer wall of the swing arm.

[0012] Preferably, the support platform is provided with a slide rail for the fixed block to slide, the length direction of the slide rail is perpendicular to the length direction of the rotating shaft, the fixed block is provided with downwardly extending connecting rods on both sides of the moving direction of the fixed block, the slide rail and the support platform are provided with a long slide groove for the connecting rod to move with the fixed block, the slide groove extends from the lower end of the connecting rod, and a clamping block that contacts the lower end surface of the support platform is threadedly connected to the extended end.

[0013] Preferably, maintenance openings are provided on one side of the conical box and the two rectangular boxes. The maintenance opening of the conical box is located between the two sector plates, and the maintenance openings of the two rectangular boxes are located on the box wall of the rectangular box away from the cylinder. Maintenance doors for closing their respective maintenance openings are provided on the conical box and the two rectangular boxes.

[0014] Preferably, a plurality of pairs of oppositely distributed vertical plates are provided on the outer walls of the rectangular boxes. A rotating rod is rotatably connected between the two vertically plates distributed oppositely in pairs. A plurality of locking plates opposite to the rotating rod are provided on the side wall of the maintenance door. An opening groove for the rotating rod to turn into is provided on the side of each locking plate facing away from the maintenance door. A locking block pressing on the locking plate is threadedly connected to the outer wall of the rotating rod.

[0015] The beneficial effect of the present utility model lies in that the adjusting member adjusts the position of the weight, so that the pressure of the valve plate surface against the lower end wall of the cylinder increases or decreases, and further the weight of the material for opening the valve plate increases or decreases, thereby playing a role in adjusting the discharge amount of the discharge pipe. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a structural schematic diagram of this embodiment;

[0018] Figure 2 It is a structural schematic diagram of this embodiment for showing the rotating shaft;

[0019] Figure 3 It is a structural schematic diagram of this embodiment for showing the valve plate;

[0020] Figure 4 It is a structural schematic diagram of this embodiment for showing the pressing block;

[0021] Figure 5 It is a structural schematic diagram of this embodiment for showing the support platform.

[0022] Explanation of the Reference Numerals in the Drawings:

[0023] In the figure: 1. Cylinder; 11. Rectangular box; 12. Conical box; 13. Rotating shaft; 131. Extension rod; 132. Valve plate; 133. Weight; 134. Support platform; 135. Fixed block; 136. Turntable; 137. Fan-shaped plate; 138. Rocker; 139. Screw; 14. Adjustment hole; 141. Limiting ring; 142. Locking rod; 15. Slide rail; 151. Connecting rod; 152. Slide groove; 153. Pressing block; 16. Inspection door; 161. Vertical plate; 162. Rotating rod; 163. Locking plate; 164. Locking block; 2. Feeding pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] A rotary kiln preheater flap valve, such as Figure 1 and Figure 2 , including a valve body, the valve body includes two vertically distributed cylinders 1 and two rectangular boxes 11 extending obliquely upward, the upper and lower cylinders 1 are coaxially distributed, and the upper and lower cylinders 1 are connected to the feed pipe 2 of the rotary kiln preheater through a flange at the ends away from each other, the lower ends of the two rectangular boxes 11 are connected to each other, and the two rectangular boxes 11 are provided with a conical box 12 at the ends connected to each other, the lower end of the conical box 12 is connected to the lower cylinder 1, and one side wall of the two rectangular boxes 11 is fixed to the outer wall of the upper cylinder 1, that is, the lower end wall of the upper cylinder 1 extends to the space connected to the two rectangular boxes 11, such as Figure 2 and Figure 3 , the two rectangular boxes 11 are rotatably connected with the opposite box walls thereof, a plurality of extension rods 131 are fixedly connected to the rotation shaft 13, the extension rods 131 on the same rotation shaft 13 are connected through a valve plate 132, both ends of the two rotation shafts 13 extend out of the rectangular box 11, and a weight 133 is provided at one end of the extension, the weight 133 makes the ends of the two valve plates 132 away from the rotation shaft 13 collide with each other and makes the plate surface of the valve plate 132 collide with the lower cylinder wall of the upper cylinder 1, the lower cylinder wall of the upper cylinder 1 is also provided with an inclined surface which is convenient for collide with the plate surface of the valve plate 132, so as to achieve the purpose of closing the lower end of the cylinder mouth of the upper cylinder 1, and an adjusting member for adjusting the position of the weight 133 is provided on the rotation shaft 13.

[0026] like Figure 1 and Figure 2, the adjusting member adjusts the position of the weight 133 so that the pressure of the plate surface of the valve plate 132 against the lower cylinder wall of the cylinder 1 increases or decreases. The weight of the material falling on the two mutually contacting plate surfaces of the valve plate 132 is the force to open the two valve plates 132. At this time, the weight of the material to open the valve plate 132 increases or decreases, thereby playing a role in adjusting the discharge amount of the discharge pipe 2. When the material reaches a certain weight, the two valve plates 132 rotate away from the cylinder wall of the upper cylinder 1. At this time, the material falls into the conical box 12 through the valve plate 132, and then falls into the lower cylinder 1 through the conical box 12. The smaller taper end of the conical box 12 is connected to the lower cylinder 1, and the material is discharged through the lower cylinder 1.

[0027] As Figure 1 and Figure 2 , support platforms 134 are provided on the outer walls of the rectangular boxes 11, fixing blocks 135 are provided on the support platforms 134, one end of the rotating shaft 13 passing through the rectangular box 11 is rotatably connected to the fixing block 135 and one end passes through the fixing block 135. A turntable 136 is coaxially fixed at the end of the rotating shaft 13 passing through the fixing block 135. A sector plate 137 is provided on the turntable 136, and the weight 133 is fixed on the sector plate 137.

[0028] As Figure 1 and Figure 2 , the adjusting member includes a swing rod 138 provided on the side of the sector plate 137 facing the fixing block 135. The swing rod 138 is fixed to the sector plate 137 by a plurality of screws 139. A plurality of adjusting holes 14 for the screws 139 to pass through are arranged in an array along the center of the sector plate 137 on the sector plate 137. One end of the screw 139 passes through the adjusting hole 14 and is threadedly connected to the swing rod 138. The weight 133 is arranged on the swing rod 138. At this time, the weight of the weight 133 is transmitted to the rotating shaft 13 through the swing rod 138, and then the rotating shaft 13 drives the valve plate 132 to abut against the lower end surface of the upper cylinder 1.

[0029] As Figure 1 and Figure 2 , limiting rings 141 are sleeved on both ends of the swing rod 138 where the weight 133 is located. Locking rods 142 are threadedly connected to the outer walls of the respective limiting rings 141, and one end of the locking rod 142 passes through the limiting ring 141 and abuts against the outer wall of the swing rod 138.

[0030] As Figure 1 and Figure 2, when it is necessary to adjust the force of the valve plate 132 pressing on the lower end face of the upper cylinder 1, on the one hand, the locking rod 142 can be rotated so that the limit ring 141 can slide on the swing rod 138, and then the position of the weight 133 on the swing rod 138 can be adjusted. According to the lever principle, the pressure of the valve plate 132 pressing on the lower end face of the upper cylinder 1 can be adjusted. On the other hand, the position of the screw 139 installed in the adjustment hole 14 of the sector plate 137 can be changed, thereby changing the position of the swing rod 138, and then the position of the weight 133 can be adjusted, so that the pressure of the weight 133 acting on the valve plate 132 pressing on the lower end face of the upper cylinder 1 is changed, and the discharge amount of the blanking pipe 2 is adjusted to meet the use requirements.

[0031] Such as Figure 1 and Figure 4 and Figure 5 , the setting of the fixing block 135 is to provide a supporting force for the rotation of the rotating shaft 13, which is convenient for the swing rod 138 to drive the rotating shaft 13 to rotate. Therefore, the rotating shaft 13 needs to be installed into the fixing block 135. In order to facilitate the installation of the rotating shaft 13 into the fixing block 135 and reduce the installation error between the rotating shaft 13 and the fixing block 135, a slide rail 15 for the fixing block 135 to slide is provided on the support platform 134. The length direction of the slide rail 15 is perpendicular to the length direction of the rotating shaft 13. The fixing block 135 is provided with connecting rods 151 extending downward on both sides in the moving direction of the fixing block 135. The slide rail 15 and the support platform 134 are both provided with elongated sliding grooves 152 for the connecting rods 151 to move along with the fixing block 135. The lower end of the connecting rod 151 extends out of the sliding groove 152, and a pressing block 153 that abuts against the lower end face of the support platform 134 is threadedly connected to the extended end.

[0032] Such as Figure 1 and Figure 4 and Figure 5 , by moving the fixing block 135 on the slide rail 15, the position of the fixing block 135 is adjusted to facilitate the rotating shaft 13 to pass through the fixing block 135. Rotating the pressing block 153 fixes the position of the connecting rod 151, and then the position of the fixing block 135 is fixed.

[0033] Such as Figure 1 , a maintenance port is provided on one side of the conical box 12 and the two rectangular boxes 11. The maintenance port of the conical box 12 is located between the two sector plates 137. The maintenance ports of the two rectangular boxes 11 are located on the box wall of the rectangular box 11 away from the cylinder 1. Maintenance doors 16 for closing their respective maintenance ports are provided on the conical box 12 and the two rectangular boxes 11.

[0034] Such as Figure 1, a locking member for closing the inspection opening is provided on the rectangular box 11. The locking member includes a plurality of pairs of oppositely distributed vertical plates 161 provided on the outer wall of the rectangular box 11. A rotating rod 162 is rotatably connected between the vertically distributed vertical plates 161 in pairs. A plurality of locking plates 163 opposite to the rotating rod 162 are provided on the side wall of the inspection door 16. An opening groove for the rotating rod 162 to turn into is provided on the side of each locking plate 163 away from the inspection door 16. A locking block 164 that presses against the locking plate 163 is threadedly connected to the outer wall of the rotating rod 162. When it is necessary to close the inspection opening, the rotating rod 162 is rotated to make the rotating rod 162 enter the opening groove, and then the locking block 164 is rotated to make the locking block 164 press against the locking plate 163, so that the locking plate 163 is pressed towards the rectangular box 11. Since the locking plate 163 is fixed to the inspection door 16, the inspection door 16 is pressed against the rectangular box 11, thereby closing the inspection opening.

[0035] As Figure 1 , one side of the inspection door 16 located on the conical box 12 is hinged to the outer wall of the conical box 12, and the other side is locked by a locking member similar to that on the rectangular box 11.

[0036] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A rotary kiln preheater flap valve, comprising a valve body, characterized in that: The valve body comprises two vertically distributed cylinders (1) above and below and two rectangular boxes (11) extending obliquely upward, the lower ends of the two rectangular boxes (11) are connected to each other and the two rectangular boxes (11) are provided with a conical box (12) at the ends connected to each other, the lower end of the conical box (12) is communicated with the cylinder (1) below, one side wall of the two rectangular boxes (11) is fixed to the outer wall of the upper cylinder (1), the opposite wall of the two rectangular boxes (11) is rotatably connected to a rotating shaft (13), and the rotating shaft (13) is fixedly connected to the inner wall of the rotating shaft (13). A plurality of extension rods (131) are provided. The extension rods (131) located on the same rotating shaft (13) are connected via valve plates (132). A rectangular box (11) is extended from both ends of the two rotating shafts (13). A weight (133) is provided at one of the extended ends. The weight (133) causes the ends of the two valve plates (132) away from the rotating shaft (13) to contact each other and causes the plate surface of the valve plate (132) to contact the lower cylinder wall of the upper cylinder (1). An adjusting member for adjusting the position of the weight (133) is provided on the rotating shaft (13).

2. A rotary kiln preheater flap valve as claimed in claim 1, characterized in that: The outer wall of the rectangular box (11) is provided with a support platform (134), and the support platform (134) is provided with a fixed block (135). The rotating shaft (13) is rotatably connected to the fixed block (135) at one end passing through the rectangular box (11) and one end passes through the fixed block (135). A rotating disk (136) is coaxially fixedly provided at one end of the rotating shaft (13) passing through the fixed block (135). A fan-shaped plate (137) is provided on the rotating disk (136), and the weight (133) is fixed on the fan-shaped plate (137).

3. A rotary kiln preheater flap valve as claimed in claim 2, characterized in that: The adjusting member comprises a swing rod (138) arranged on a side of the sector plate (137) facing the fixed block (135); the swing rod (138) is fixed to the sector plate (137) by means of a plurality of screws (139); a plurality of adjusting holes (14) for the screws (139) to pass through are arranged in an array along the center of the sector plate (137); one end of the screw (139) passes through the adjusting hole (14) and is threadedly connected to the swing rod (138); and the weight (133) is arranged on the swing rod (138).

4. A rotary kiln preheater flap valve as claimed in claim 3, characterized in that: The swing rod (138) is sleeved with limiting rings (141) at both ends of the weight (133), and a locking rod (142) is threadedly connected to the outer wall of each limiting ring (141), and one end of the locking rod (142) passes through the limiting ring (141) and contacts the outer wall of the swing rod (138).

5. A rotary kiln preheater flap valve as claimed in claim 2, characterized in that: The support platform (134) is provided with a slide rail (15) for the fixed block (135) to slide, the length direction of the slide rail (15) is perpendicular to the length direction of the rotating shaft (13), the fixed block (135) is provided with connecting rods (151) extending downwards on both sides of the moving direction of the fixed block (135), the slide rail (15) and the support platform (134) are both provided with a long strip slide groove (152) for the connecting rod (151) to move along with the fixed block (135), the lower end of the connecting rod (151) extends out of the slide groove (152), and the extended end is threadedly connected to a clamping block (153) that contacts the lower end surface of the support platform (134).

6. A rotary kiln preheater flap valve as claimed in claim 1, characterized in that: The conical box (12) and the two rectangular boxes (11) are each provided with an inspection opening on one side. The inspection opening of the conical box (12) is located between the two sector plates (137). The inspection openings of the two rectangular boxes (11) are located on a box wall on a side of the rectangular box (11) away from the cylinder (1). The conical box (12) and the two rectangular boxes (11) are each provided with an inspection door (16) for closing the respective inspection openings.

7. A rotary kiln preheater flap valve as claimed in claim 6, characterized in that: The outer wall of the rectangular box (11) is provided with a plurality of pairs of oppositely distributed vertical plates (161), and a rotating rod (162) is rotatably connected between the two oppositely distributed vertical plates (161). The side wall of the inspection door (16) is provided with a plurality of locking plates (163) opposite to the rotating rod (162), and each of the locking plates (163) is provided with an opening groove for the rotating rod (162) to rotate into on a side away from the inspection door (16), and the outer wall of the rotating rod (162) is threadedly connected with a locking block (164) pressed against the locking plate (163).

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