Linear motion device for hammer valve

Abstract

The utility model relates to circulating fluidized bed boiler technical field, concretely relates to a linear motion device for hammer valve, including device ontology, be provided with motion cavity in device ontology, be provided with screw rod and track in parallel in motion cavity, the fixed block is connected with sliding on the track, the middle part of fixed block is provided with the fixed hole for fixing hammer valve along the length direction of track and passes through, the driving nut is threadedly matched with the sleeve of screw rod, the driving nut is connected through the connecting seat and fixed block, and the motor for driving screw rod rotation is installed to device ontology at the end part of screw rod. Fixed block and driving nut are separately arranged, drive through the connecting seat, so this is favorable to the maintenance of screw rod and track separately, and the movement parts such as screw rod and track are all arranged in motion cavity, whether the failure appears is convenient for direct judgment, and corresponding maintenance is carried out.

Description

Technical Field

[0001] This utility model relates to the field of circulating fluidized bed boiler technology, specifically to a linear motion device for a hammer valve. Background Technology

[0002] The development and application of circulating fluidized bed boiler technology have been widely adopted. This technology is one of the advanced technologies for clean coal combustion and achieving sustainable development strategies. It integrates advantages such as energy saving, clean combustion, safety and reliability, and reduced pollution emissions. However, in actual boiler operation, some local structural problems can also affect boiler efficiency. For example, the problem of shutting off the ash discharge port seriously affects the safe and economical operation of the boiler. Therefore, the National Energy Administration's 2023 "Twenty-Five Key Requirements for Preventing Power Production Accidents" requires the use of advanced electric hammer valves for the ash discharge gate.

[0003] Because alkaline substances and unburned fuel particles generated during boiler operation can easily enter the guide rail system through gaps, and mix with lubricating oil to form hard dirt, the problem of guide rail jamming is quite prominent. Based on this reason, our company has developed a linear motion device that makes the linear motion of the hammer valve stable and easy to maintain. Utility Model Content

[0004] The purpose of this invention is to provide a linear motion device for a hammer valve, which solves the problem that the linear motion device for a hammer valve is difficult to maintain in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A linear motion device for a hammer valve includes a device body with a motion chamber inside. A lead screw and a track are arranged in parallel inside the motion chamber. A first fixing block is slidably connected to the track. A fixing hole for fixing the hammer valve is provided through the middle of the first fixing block along the length of the track. A drive nut is threaded onto the lead screw and connected to the first fixing block through a connecting seat. A motor for driving the lead screw to rotate is installed at the end of the lead screw in the device body.

[0007] A further technical solution is to set two tracks, which are spaced apart on the left and right. A first fixing block is set between the two tracks. The first fixing block has vertical mounting seats corresponding to the tracks on both the left and right sides. The mounting seats have track wheels that are rolled and connected to the tracks on both the upper and lower sides of the tracks. The mounting seats have at least two track wheels on the upper and lower sides of the tracks.

[0008] A further technical solution is that the mounting base is provided with a first shaft hole that passes through the left and right sides, and a track wheel shaft is rotatably installed in the first shaft hole. One end of the track wheel shaft is rotatably connected to the track wheel on the side of the mounting base away from the first fixed block, and the other end is connected to a fastening nut on the other side of the mounting base.

[0009] A further technical solution is that the upper and lower sides of the track are raised to form rolling ribs, and the outer circumference of the track wheel is recessed to form rolling ring grooves that match the rolling ribs.

[0010] A further technical solution is to fix the track to the cavity wall of the motion cavity through a fixing component.

[0011] A further technical solution is that the fixing component includes a fixing plate, a second fixing block, mounting bolts, and hexagonal head screws. The fixing plate has a connecting hole in the middle that passes through both sides. The outer wall of one end of the second fixing block is fixedly connected to the wall of the connecting hole. The end of the second fixing block connected to the connecting hole has a recessed circular hole. The bottom of the circular hole has a bolt hole that connects to the other end of the second fixing block. The track has threaded holes that pass through both sides. The left and right sides of the device body have insertion holes that connect to the moving cavity. The end of the second fixing block away from the fixing plate passes through the insertion hole into the moving cavity, and the bolt hole is aligned with the threaded hole. The fixing plate fits against the surface of the device body and is fixed by mounting bolts. The hexagonal head screw passes through the circular hole, the bolt hole, and the threaded hole in sequence, and the hexagonal head screw and the threaded hole are threadedly matched.

[0012] A further technical solution is that the cavity wall of the motion chamber has a second shaft hole installed at the end of the lead screw away from the motor, and a bearing seat is provided on the second shaft hole. The end of the lead screw away from the motor is placed in the bearing seat, and the end is rotatably connected to the bearing seat through the bearing. The motion chamber has a connecting hole at the position where the lead screw is connected to the motor, which is connected to the outside of the device body. A bearing support is installed in the connecting hole, and a double-row rolling bearing is rotatably installed in the bearing support. The lead screw passes through the double-row rolling bearing and is connected to the hollow output shaft of the motor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By driving the lead screw to rotate through a motor, and with the cooperation of the lead screw and the drive nut, the first fixed block can be driven to move linearly on the track through the drive nut, thereby controlling the opening or closing of the ash discharge port of the circulating fluidized bed boiler by the linear movement of the hammer valve. The first fixed block and the drive nut are set separately and transmitted through a connecting seat. This facilitates separate maintenance of the lead screw and the track. The moving parts such as the lead screw and the track are exposed in the moving cavity, making it easy to intuitively judge whether a fault has occurred and to perform corresponding maintenance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a linear motion device for a hammer valve according to the present invention.

[0015] Figure 2 This is a schematic diagram of another state of the linear motion device for a hammer valve according to this utility model.

[0016] Figure 3 This is a cross-sectional schematic diagram of a linear motion device for a hammer valve according to the present invention.

[0017] Icons: 1-Device body, 2-Motion cavity, 3-Screw, 4-Railway, 5-First fixing block, 6-Fixing hole, 7-Drive nut, 8-Connecting seat, 9-Mounting seat, 10-Railway wheel, 11-First shaft hole, 12-Railway wheel shaft, 13-Fasting nut, 14-Rolling convex strip, 15-Rolling ring groove, 16-Fixing plate, 17-Second fixing block, 18-Mounting bolt, 19-Hex socket head cap screw, 20-Connecting hole, 21-Circular concave hole, 22-Bolt round hole, 23-Threaded hole, 24-Insertion hole, 25-Second shaft hole, 26-Bearing seat, 27-Bearing, 28-Connecting hole, 29-Bearing support, 30-Double row rolling bearing, 31-Valve stem hole, 32-Valve stem, 33-Valve head, 34-Limit screw hole, 35-Limit bolt. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Figures 1 to 3 The following is an embodiment of the present invention.

[0020] Example 1:

[0021] like Figure 1 , 2As shown, a linear motion device for a hammer valve includes a device body 1, a motion chamber 2 within the device body 1, a lead screw 3 and a track 4 arranged parallel to each other within the motion chamber 2, a first fixing block 5 slidably connected to the track 4, and a fixing hole 6 for fixing the hammer valve penetrating through the middle of the first fixing block 5 along the length of the track 4. A drive nut 7 is threaded onto the lead screw 3, and the drive nut 7 is connected to the first fixing block 5 via a connecting seat 8. A motor for driving the lead screw 3 to rotate is installed at the end of the device body 1. By driving the lead screw 3 to rotate through the motor, and with the cooperation of the lead screw 3 and the drive nut 7, the first fixing block 5 can be driven to move linearly on the track 4, thereby driving the hammer valve to move linearly to control the opening or closing of the ash discharge port of the circulating fluidized bed boiler. The first fixing block 5 and the drive nut 7 are set separately and transmitted through the connecting seat 8. This facilitates separate maintenance of the lead screw 3 and the track 4. The moving parts, such as the lead screw 3 and the track 4, are exposed within the motion chamber 2, making it easy to visually determine whether a fault has occurred and to perform corresponding maintenance. A valve stem hole 31 is provided on the front side of the device body 1, which is through the inside and outside. The axial direction of the valve stem hole 31 is parallel to the track 4. The valve stem 32 of the hammer valve is slidably disposed in the valve stem hole 31. One end of the valve stem 32 is fixedly connected to the fixing hole 6 of the first fixing block 5 in the moving cavity 2, and the other end is connected to the valve head 33 on the outside of the device body 1.

[0022] Example 2:

[0023] Based on Example 1, such as Figure 3 As shown, two tracks 4 are arranged alternately on the left and right sides. A first fixing block 5 is positioned between the two tracks 4. On both sides of the first fixing block 5, there are vertically arranged mounting seats 9 corresponding to the tracks 4. On the upper and lower sides of the corresponding tracks 4, there are track wheels 10 that are rolled and connected to the tracks 4. Each mounting seat 9 has at least two track wheels 10 on both the upper and lower sides of the tracks 4. By positioning the first fixing block 5 between the two tracks 4, the stability of the first fixing block 5's linear movement is improved. Each mounting seat 9 has track wheels 10 arranged vertically, and these track wheels 10 clamp the upper and lower sides of the track wheels 10, allowing the mounting seat 9 to move along the length of the track 4. With the cooperation of the two tracks 4 and the two mounting seats 9, when the first fixing block 5 moves along the length of the track 4 (i.e., in the forward and backward direction), the four directions (up, down, left, and right) are almost completely immobilized due to the constraint of the tracks 4, thus making the movement of the hammer valve more stable.

[0024] The mounting base 9 is provided with a first shaft hole 11 that passes through the left and right sides. A track wheel shaft 12 is rotatably installed in the first shaft hole 11. One end of the track wheel shaft 12 is rotatably connected to the track wheel 10 on the side of the mounting base 9 away from the first fixing block 5, and the other end is connected to a fastening nut 13 on the other side of the mounting base 9.

[0025] Both the upper and lower sides of the track 4 have protruding rolling ribs 14, and the outer circumference of the track wheel 10 is recessed with rolling ring grooves 15 that match the rolling ribs 14. The track wheel shaft 12 and the track wheel bearing inside the rolling wheel are rotatably connected, and a limit ring is provided at the connection position between the track wheel shaft 12 and the track wheel 10 to fit the position of the opening of the first shaft hole 11, restricting the installation position of the track wheel shaft 12 and preventing the rolling wheel from contacting the mounting seat 9, which would cause friction between the rolling wheel and the mounting seat 9 when rolling. At the same time, the diameter of the first shaft hole 11 is larger than the diameter of the track wheel shaft 12, which facilitates the installation of the rolling wheel. The specific installation method is as follows: Taking the track wheel 10 near the upper side of the left mounting base 9 as an example, when installing the track wheel 10, it is inserted obliquely into the first shaft hole 11 from the left side of the mounting base 9. This allows the rolling protrusion 14 to fit into the rolling ring groove 15. After fitting, the track wheel shaft 12 is horizontal. Then, the fastening nut 13 is threadedly connected to the track wheel shaft 12 on the right side of the mounting base 9, so that the fastening nut 13 and the limiting ring abut against the left and right sides of the mounting base 9. At this time, since the diameter of the first shaft hole 11 is larger than the diameter of the track wheel shaft 12, the track wheel shaft 12 has room to move up and down. Therefore, by setting a limiting screw hole 34 on the upper side of the mounting base 9 that communicates with the first shaft hole 11, and a limiting bolt 35 that matches the thread in the limiting screw hole 34, the track wheel shaft 12 is abutted, so that the track wheel shaft 12 will not shift up and down after installation.

[0026] Example 3:

[0027] Based on the foregoing embodiments, such as Figure 3 As shown, the track 4 is fixedly connected to the cavity wall of the motion cavity 2 via fixing components. Multiple fixing components are provided along the length of the track 4.

[0028] The fixing assembly includes a fixing plate 16, a second fixing block 17, mounting bolts 18, and socket head cap screws 19. The fixing plate 16 has a connecting hole 20 extending through both sides in its center. The outer wall of one end of the second fixing block 17 is fixedly connected to the wall of the connecting hole 20. A circular recess 21 is recessed at the end of the second fixing block 17 connected to the connecting hole 20. A bolt hole 22, communicating with the other end of the second fixing block 17, is provided at the bottom of the recess 21. Threaded holes 22 extending through both sides are provided on the track 4. 3. Insertion holes 24 communicating with the moving cavity 2 are provided on both the left and right sides of the device body 1. The end of the second fixing block 17 away from the fixing plate 16 passes through the insertion hole 24 into the moving cavity 2, and the bolt round hole 22 is aligned with the threaded hole 23. The fixing plate 16 fits against the surface of the device body 1 and is fixed by mounting bolts 18. Hexagonal head screws 19 pass sequentially into the round recess 21, the bolt round hole 22, and the threaded hole 23, and the hexagonal head screws 19 and the threaded hole 23 are threadedly matched. This arrangement allows the mounting base 9 to be firmly fixed inside the moving cavity 2, and this connection method does not affect the movement of the track wheel 10. When installing the track 4, the second fixing block 17 is inserted through the insertion hole 24, and then the fixing plate 16 is fixed to the surface of the device body 1 by the mounting bolts 18. Then, the threaded hole 23 on the track 4 is aligned with the bolt round hole 22, and then the mounting block and the track 4 are fixed together by the hexagonal head screws 19, thus completing the installation of the track 4.

[0029] Example 4:

[0030] Based on the foregoing embodiments, such as Figure 1 As shown, the cavity wall of the motion chamber 2 has a second shaft hole 25 installed at the end of the lead screw 3 away from the motor. A bearing seat 26 is provided on the second shaft hole 25. The end of the lead screw 3 away from the motor is placed in the bearing seat 26, and the end is rotatably connected to the bearing seat 26 through a bearing 27. The motion chamber 2 has a connecting hole 28 at the position where the lead screw 3 is connected to the motor, which is connected to the outside of the device body 1. A bearing support 29 is installed in the connecting hole 28, and a double-row rolling bearing 30 is rotatably installed in the bearing support 29. The two ends of the double-row rolling bearing 30 are respectively connected to the lead screw 3 and the output shaft of the motor. The drive nut 7 has a threaded hole that matches the lead screw 3 along the length direction of the lead screw 3. It matches the lead screw 3 through the threaded hole. When the lead screw 3 rotates, since the drive nut 7 is connected to the first fixed block 5 through the connecting seat 8, the drive nut 7 cannot rotate with the lead screw 3. It can only move linearly along the length direction of the lead screw 3 when the lead screw 3 rotates. By providing the second shaft hole 25 and the bearing support 29, both ends of the lead screw 3 can be fixed without restricting its rotation. By providing the double-row rolling bearing 30 in the bearing support 29, the hollow output shaft of the motor can be stably connected to the drive lead screw 3.

[0031] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A linear motion device for a hammer valve, characterized in that, The device includes a main body (1), a motion chamber (2) is provided inside the main body (1), a lead screw (3) and a track (4) are arranged in parallel inside the motion chamber (2), a first fixing block (5) is slidably connected on the track (4), a fixing hole (6) for fixing a hammer valve is provided through the middle part of the first fixing block (5) along the length direction of the track (4), a drive nut (7) is threaded on the lead screw (3), the drive nut (7) is connected to the first fixing block (5) through a connecting seat (8), and a motor for driving the lead screw (3) to rotate is installed at the end of the main body (1).

2. The linear motion device for a hammer valve according to claim 1, characterized in that: The track (4) is set as two, and the two tracks (4) are spaced apart from each other. The first fixing block (5) is set between the two tracks (4). The first fixing block (5) has a mounting seat (9) corresponding to the track (4) on both the left and right sides. The mounting seat (9) has a track wheel (10) that is rotatably connected to the track (4) on both the upper and lower sides of the track (4). The mounting seat (9) has at least two track wheels (10) on the upper and lower sides of the track (4).

3. The linear motion device for a hammer valve according to claim 2, characterized in that: The mounting base (9) is provided with a first shaft hole (11) that passes through the left and right sides. A track wheel shaft (12) is provided in the first shaft hole (11). One end of the track wheel shaft (12) is rotatably connected to the track wheel (10) on the side of the mounting base (9) away from the first fixing block (5), and the other end is connected to a fastening nut (13) on the other side of the mounting base (9).

4. The linear motion device for a hammer valve according to claim 2, characterized in that: The track (4) has rolling ridges (14) protruding on both the upper and lower sides, and rolling ring grooves (15) matching the rolling ridges (14) are recessed on the outer circumference of the track wheel (10).

5. A linear motion device for a hammer valve according to claim 2, characterized in that: The track (4) is fixedly connected to the cavity wall of the motion cavity (2) by a fixing component.

6. The linear motion device for a hammer valve according to claim 5, characterized in that: The fixing assembly includes a fixing plate (16), a second fixing block (17), mounting bolts (18), and socket head cap screws (19). The fixing plate (16) has a connecting hole (20) that passes through both sides in the middle. The outer wall of one end of the second fixing block (17) is fixedly connected to the wall of the connecting hole (20). The end of the second fixing block (17) connected to the connecting hole (20) has a recessed circular recess (21). The bottom of the circular recess (21) has a bolt hole (22) that communicates with the other end of the second fixing block (17). The track (4) has a threaded hole (23) that passes through both sides. The device body ( 1) Both sides are provided with insertion holes (24) that communicate with the motion cavity (2). The end of the second fixing block (17) away from the fixing plate (16) passes through the insertion hole (24) into the motion cavity (2). The bolt round hole (22) is aligned with the threaded hole (23). The fixing plate (16) is attached to the surface of the device body (1) and fixed by the mounting bolt (18). The internal hexagonal head screw (19) passes through the round concave hole (21), the bolt round hole (22) and the threaded hole (23) in sequence. The internal hexagonal head screw (19) and the threaded hole (23) are threadedly matched and connected.

7. The linear motion device for a hammer valve according to claim 1, characterized in that: The cavity wall of the motion cavity (2) has a second shaft hole (25) at the end of the lead screw (3) away from the motor. A bearing seat (26) is installed on the second shaft hole (25). The end of the lead screw (3) away from the motor is placed in the bearing seat (26), and the end is rotatably connected to the bearing seat (26) through a bearing (27). The motion cavity (2) has a connecting hole (28) at the position where the lead screw (3) is connected to the motor, which is connected to the outside of the device body (1). A bearing support (29) is installed in the connecting hole (28). A double row rolling bearing (30) is rotatably installed in the bearing support (29). The end of the lead screw (3) away from the bearing seat (26) passes through the double row rolling bearing (30) and is connected to the hollow output shaft of the motor.

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