Wear-resistant anti-jamming adjusting shrinkage cavity

Abstract

The utility model discloses a wear-resistant anti-jamming adjusting shrinkage cavity, and relates to the technical field of adjustable shrinkage cavities, the wear-resistant anti-jamming adjusting shrinkage cavity comprises a shell, the shell is plate-shaped and hollow, the front side and the rear side of the shell are integrally provided with tubular through holes, the left side of the shell is provided with a vertical rectangular access hole, and the left side of the shell is provided with an access door at the access hole; the access door and the outer shell are fixed through bolts, two door plates are arranged in the outer shell, arc-shaped openings are formed in the two door plates, the two door plates are symmetrically arranged, and the two door plates are connected into the outer shell in a sliding mode. And the situation that the screw is scaled and rusted due to the fact that pulverized coal falls on the screw is avoided, and therefore it is guaranteed that the door plate can be normally adjusted in the follow-up using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to adjustable shrinkage hole technical field, concretely is a kind of wear-resistant anti-jamming regulation shrinkage hole. BACKGROUND

[0002] Adjustable shrinkage hole is used for the powder conveying pipeline of coal-fired boiler, adjusts the balance of coal powder air pressure in pipeline, guarantees the stability of the combustion of boiler.The adjustment principle of adjustable shrinkage hole is mainly realized the control of flow by changing the flow area of gas.

[0003] The adjustable shrinkage hole that the present market sells and the enterprises generally use at present, it is all double door plate adjustable shrinkage hole, form has opposite open type and scissors type, adjusts by rotating adjusting screw to drive door plate action to adjust, adjusting screw generally uses carbon steel material, and adopts the mode of built-in adjusting screw, when conveying coal powder, part of coal powder is left in adjustable shrinkage hole and falls in the thread of adjusting screw, therefore, coal powder scale and rust are easily generated on adjusting screw, lead to subsequent use process without adjusting door plate. UTILITY MODEL CONTENTS

[0004] The utility model aims at making up for the deficiency that built-in adjusting screw is easy to scale in prior art, provides a kind of wear-resistant anti-jamming regulation shrinkage hole.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of wear-resistant anti-jamming regulation shrinkage hole, including shell, the shell is plate-shaped, and is hollowly arranged, the shell front and back sides are integrally provided with tubular perforation, the shell left side is provided with vertical rectangular access hole, and the shell left side is provided with access door at access hole, the access door is fixed between shell by bolt, the shell is equipped with two door plates, two door plates are all provided with arc-shaped opening, and two door plates are symmetrically arranged, two door plates are all slidingly connected in shell, the shell front side is movably connected with two transmission plates, the shell front side is movably connected with screw near bottom, and the screw one end is fixedly connected with hand wheel, the top of two transmission plates is movably connected with adjacent door plate, transmission plate bottom end is movably connected with movable block, and movable block is threadedly connected with screw, the transmission plate is obliquely arranged.

[0006] The above-mentioned, the transmission plate includes first connecting rod and second connecting rod, first connecting rod and second connecting rod are movably connected with door plate and movable block respectively, and first connecting rod and second connecting rod end are fixedly connected with connecting shaft.

[0007] The above-mentioned, the shell rear side is provided with assembly opening, the assembly opening is provided with mounting plate, mounting plate is fixedly connected with bearing, the connecting shaft penetrates the inside of bearing, the mounting plate is fixed on shell by bolt, and the outside of mounting plate is marked with scale above perforation.

[0008] The connecting shaft is fixed through bolts with the first connecting rod and the second connecting rod, rectangular grooves are formed at the ends of the first connecting rod and the second connecting rod away from the connecting shaft, and the rear side of the door plate and the movable block are both threadedly connected with the screws passing through the rectangular grooves.

[0009] The screw rod is composed of two threaded rods, the adjacent ends of the two threaded rods are fixedly connected, the screw thread rotation directions of the two threaded rods are opposite, threaded holes are formed in the two movable blocks, and the two threaded rods are threadedly connected with the two threaded holes respectively.

[0010] The screw rod is composed of two threaded rods, the adjacent ends of the two threaded rods are fixedly connected, the screw thread rotation directions of the two threaded rods are opposite, threaded holes are formed in the two movable blocks, and the two threaded rods are threadedly connected with the two threaded holes respectively.

[0011] The screw rod is composed of two threaded rods, the adjacent ends of the two threaded rods are fixedly connected, the screw thread rotation directions of the two threaded rods are opposite, threaded holes are formed in the two movable blocks, and the two threaded rods are threadedly connected with the two threaded holes respectively.

[0012] Compared with the prior art, the wear-resistant anti-jamming adjusting and shrinkage hole has the following beneficial effects: the external screw rod structure is adopted, the screw rod and the door plate are connected through the movable block and the transmission plate, the coal powder is prevented from falling on the screw rod to cause the screw rod to be scaled and corroded, and therefore, the door plate can be normally adjusted in the subsequent use process.

[0013] Other advantages, objects and features of the present application will be apparent in the light of the following detailed description of the application, and will be apparent to those skilled in the art from the teachings thereof, or can be learned from the present application by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the present application;

[0015] Figure 2 It is an internal structure schematic view of the present application;

[0016] Figure 3 It is a cross-sectional structure schematic view of the present application;

[0017] Figure 4 It is a door plate structure schematic view of the present application.

[0018] In the figure: 1, shell; 2, transmission plate; 201, first connecting rod; 202, second connecting rod; 203, connecting shaft; 3, screw rod; 4, movable block; 5, mounting plate; 6, door plate; 7, screw; 8, pulley; 9, wear-resistant ceramic sheet; 10, access door; 11, fixed block. DETAILED DESCRIPTION

[0019] 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 scope of the utility model.

[0020] As shown in the figure, Figures 1-4 The utility model provides a kind of wear-resistant anti-jamming adjusting shrinkage hole technical solutions: including shell 1, shell 1 is plate-shaped, and is hollowly arranged, the tubular perforation of being integrally arranged in shell 1 front and back two sides, vertically rectangular access hole is set in the left side of shell 1, and access door 10 is arranged at the left side of shell 1 at access hole, access door 10 is fixed between shell 1 by bolt, two door panels 6 are arranged in shell 1, arc-shaped opening is arranged in two door panels 6, and two door panels 6 are symmetrically arranged, two door panels 6 are slidably connected in shell 1, two transmission plates 2 are movably connected on the front side of shell 1, screw rod 3 is movably connected on the front side of shell 1 close to bottom, and hand wheel is fixedly connected to one end of screw rod 3, the top of two transmission plates 2 is movably connected with adjacent door panel 6, movable block 4 is movably connected to the bottom of transmission plate 2, and movable block 4 is threadedly connected with screw rod 3, and transmission plate 2 is obliquely arranged.

[0021] According to the overall structure of the device, when using, the device is installed on the passageway, so that the passageway is connected with the tubular perforation, screw rod 3 is rotated by hand wheel, movable block 4 moves in opposite directions respectively, movable block 4 pushes transmission plate 2 to deflect when moving, so as to drive door panel 6 to move, so that two door panels 6 are close to or away from each other, to carry out shrinkage hole adjustment.

[0022] As shown in the figure, Figure 2 Transmission plate 2 includes first connecting rod 201 and second connecting rod 202, first connecting rod 201 and second connecting rod 202 are movably connected with door panel 6 and movable block 4 respectively, and connecting shaft 203 is fixedly connected to the end of first connecting rod 201 and second connecting rod 202.

[0023] Transmission plate 2 is formed by first connecting rod 201 and second connecting rod 202, and is fixedly connected by connecting shaft 203, so as to drive connection between door panel 6 and external screw rod 3, transmission plate 2 is deflected by the rotation of screw rod 3, so as to drive door panel 6 to move, to realize shrinkage hole adjustment.

[0024] As shown in the figure, Figure 2As shown, the rear side of the shell 1 is provided with an assembly opening, and the assembly opening is provided with a mounting plate 5, and the assembly opening completely covers the first connecting rod 201, and the mounting plate 5 is fixedly connected with a bearing, and the connecting shaft 203 penetrates the inner side of the bearing, and the mounting plate 5 is fixed on the shell 1 by bolts, and the outer side of the mounting plate 5 is marked with a scale above the perforation, and the connecting shaft 203 is fixed with the first connecting rod 201 and the second connecting rod 202 by bolts, and the first connecting rod 201 and the second connecting rod 202 are provided with a rectangular slot at the end away from the connecting shaft 203, and the rear side of the door plate 6 and the movable block 4 are both threadedly connected with a screw 7 penetrating the rectangular slot.

[0025] The first connecting rod 201 located on the inner side and the second connecting rod 202 located on the outer side can be smoothly connected through the opening, the opening is closed by the mounting plate 5, the connecting shaft 203 can penetrate the mounting plate 5 through the bearing, and the deflection of the first connecting rod 201 and the second connecting rod 202 is facilitated, and the coal powder is prevented from leaking out of the opening, and the mounting plate 5 and the connecting shaft 203 are connected on the shell 1 and the transmission plate 2 respectively by bolts, so that they can be disassembled, thereby facilitating the maintenance and replacement of the transmission plate 2 and prolonging the service life.

[0026] As shown in the figure, Figure 2 The screw rod 3 is composed of two threaded rods, the adjacent ends of the two threaded rods are fixedly connected, and the screw threads on the two threaded rods are opposite in direction, the two movable blocks 4 are both provided with threaded holes, and the two threaded rods are threadedly connected with the two threaded holes respectively, the screw rod 3 is provided with a fixed block 11 at each end, the two fixed blocks 11 are fixedly connected to the outer side of the access door 10 and the right side of the shell 1 respectively, and the two fixed blocks 11 are both fixedly connected with bearings, and the two ends of the screw rod 3 penetrate the adjacent bearings respectively.

[0027] The screw rod 3 is composed of two threaded rods with opposite screw directions, so that when the screw rod 3 rotates, the two movable blocks 4 move in opposite directions, thereby driving the two door plates 6 to move in opposite directions to open and close, realizing the adjustment of the shrinkage hole, the fixed block 11 supports the fixed screw rod 3, and the bearing facilitates the smooth rotation of the screw rod 3.

[0028] As shown in the figure, Figure 4 The door plate 6 is fixedly connected with a plurality of arrayed wear-resistant ceramic pieces 9 on the front and rear sides, the top and bottom of the door plate 6 are both fixedly connected with two left and right distributed pulleys 8, and the top and bottom of the shell 1 are both provided with a sliding groove matched with the pulley 8.

[0029] The wear-resistant ceramic pieces 9 improve the wear resistance of the door plate 6, reduce the wear of the door plate 6 in the repeated opening and closing process, thereby prolonging the service life, and the pulley 8 supports the door plate 6, and enables the door plate 6 to move smoothly when opening and closing.

[0030] Working principle: when using, install the device on the passageway, make the passageway connect with the tubular perforation, rotate the screw rod 3 through the hand wheel, the screw rod 3 makes two movable blocks 4 move to the opposite direction respectively through two opposite screw threads, the movable block 4 pushes the transmission plate 2 to deflect when moving, thereby drive two door plates 6 to move to the opposite direction, thus carry out the shrinkage adjustment.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear resistant, anti-jamming, regulating, and constricting orifice comprising a housing (1), characterized in that: The shell (1) is plate-shaped and hollow, and tubular perforations are integrally arranged on both sides of the shell (1), a vertical rectangular access hole is arranged on the left side of the shell (1), and a maintenance door (10) is arranged on the left side of the shell (1) at the access hole and is fixed to the shell (1) by bolts, two door plates (6) are arranged in the shell (1), arc-shaped openings are arranged on the two door plates (6), the two door plates (6) are symmetrically arranged, and the two door plates (6) are slidingly connected to the shell (1), two transmission plates (2) are movably connected to the front side of the shell (1), a screw rod (3) is movably connected to the front side of the shell (1) near the bottom, one end of the screw rod (3) is fixedly connected with a hand wheel, the top ends of the two transmission plates (2) are movably connected with adjacent door plates (6), the bottom ends of the transmission plates (2) are movably connected with movable blocks (4), and the movable blocks (4) are threadedly connected with the screw rod (3), the transmission plates (2) are inclined, the transmission plates (2) comprise first connecting rods (201) and second connecting rods (202), the first connecting rods (201) and the second connecting rods (202) are movably connected with the door plates (6) and the movable blocks (4), respectively, and the first connecting rods (201) and the second connecting rods (202) are fixedly connected with connecting shafts (203) at the ends.

2. The wear-resistant and anti-jamming adjustable shrinkage orifice according to claim 1, characterized in that: A mounting plate (5) is arranged on the rear side of the shell (1), the mounting plate (5) is fixedly connected with bearings, the connecting shafts (203) penetrate the inner sides of the bearings, the mounting plate (5) is fixed to the shell (1) by bolts, and the mounting plate (5) is marked with a scale on the outer side above the perforations.

3. The wear-resistant and anti-jamming adjustable shrinkage orifice according to claim 1, characterized in that: The connecting shafts (203) are fixed with the first connecting rods (201) and the second connecting rods (202) by bolts, rectangular grooves are arranged at the ends of the first connecting rods (201) and the second connecting rods (202) away from the connecting shafts (203), and screws (7) penetrating the rectangular grooves are threadedly connected with the rear sides of the door plates (6) and the movable blocks (4).

4. The wear-resistant and anti-jamming adjustable shrinkage orifice according to claim 1, characterized in that: The screw rod (3) comprises two threaded rods, the adjacent ends of the two threaded rods are fixedly connected, the screw threads on the two threaded rods are opposite in direction, threaded holes are arranged on the two movable blocks (4), and the two threaded rods are threadedly connected with the two threaded holes, respectively.

5. The wear-resistant and anti-jamming adjustable shrinkage orifice according to claim 4, characterized in that: Fixed blocks (11) are arranged at the two ends of the screw rod (3), the two fixed blocks (11) are fixedly connected to the outer side of the maintenance door (10) and the right side of the shell (1), respectively, bearings are fixedly connected to the two fixed blocks (11), respectively, and the two ends of the screw rod (3) penetrate the adjacent bearings, respectively.

6. The wear-resistant and anti-jamming adjustable shrinkage orifice according to claim 1, characterized in that: A plurality of arrayed wear-resistant ceramic pieces (9) are fixedly connected to the front and rear sides of the door plate (6), two pulleys (8) are fixedly connected to the top and bottom of the door plate (6), and slide grooves matched with the pulleys (8) are arranged on the top and bottom of the shell (1).

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