Different-temperature and different-speed air supply device for operating room

Abstract

The invention discloses an operating room different-temperature different-speed air supply device, and relates to the technical field of air supply devices, the operating room different-temperature different-speed air supply device specifically comprises a ventilation pipeline, an activated carbon plate is movably inserted in the ventilation pipeline, the right side of the ventilation pipeline is detachably connected with an external pipeline through a bolt, and a driving motor is fixedly mounted in the external pipeline; the right end of an output shaft of the driving motor is fixedly connected with a heat dissipation assembly, and a fixing block is fixedly installed on the side, away from the driving motor, of the heat dissipation assembly. According to the different-temperature and different-speed air supply device for the operating room, through cooperation of a ventilation pipeline, an external pipeline, a filter plate, a first cleaning brush and a second cleaning brush, the effect of cleaning dust on the inner surface and the outer surface of the filter plate is achieved through arrangement of the first cleaning brush and the second cleaning brush; the first cleaning brush and the second cleaning brush rotate on the inner side and the outer side of the filter plate correspondingly, and therefore interference of dust covering the filter plate on the flowing speed of inside and outside air is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air supply devices, in particular to an operating room temperature and speed differential air supply device. BACKGROUND

[0002] The operating room temperature and speed differential air supply device divides the air supply surface into different functional areas, and adopts a differential air supply strategy of "low temperature and high speed in the core area to preserve sterility, and high temperature and low speed in the peripheral area to preserve comfort" to adapt to different work requirements in the operating room.

[0003] However, since the pipeline of the air supply device is provided with a filter plate through bolts, dust will be attached to the surface of the filter plate after long-term use. As the attachment area of the dust on the filter plate continuously expands, the dust will cover the filter holes formed in the filter plate. At this time, the coverage of the dust will affect the air flow inside and outside the filter plate, and even affect the air supply effect of the operating room. SUMMARY

[0004] The present application provides an operating room temperature and speed differential air supply device, which solves the problems raised in the background art.

[0005] To achieve the above purpose, the present application is implemented by the following technical scheme: an operating room temperature and speed differential air supply device, comprising a ventilation pipeline, an activated carbon plate movably inserted into the inside of the ventilation pipeline, an external pipeline detachably connected to the right side of the ventilation pipeline through bolts, a drive motor fixedly installed in the inside of the external pipeline, a heat dissipation assembly fixedly connected to the right end of the output shaft of the drive motor, a fixed block fixedly installed on the side of the heat dissipation assembly away from the drive motor, spring buckles provided on the front and rear sides of the fixed block, a first cleaning brush movably installed on the right end of the fixed block and connected to the fixed block through the spring buckles, a filter plate connected to the right end of the external pipeline through bolts and located to the right of the first cleaning brush, a second cleaning brush provided on the side of the filter plate away from the first cleaning brush, and a fastening bolt threadedly connected to the left side of the second cleaning brush.

[0006] Optionally, a limiting plate is fixedly sleeved to the outer wall of the activated carbon plate, and the outer wall of the limiting plate is movably clamped to the inner wall of the ventilation pipeline. A top plate is fixedly installed on the upper end of the activated carbon plate. A pull rod is fixedly connected to the end of the top plate away from the activated carbon plate, and the upper end of the pull rod extends to the outside of the ventilation pipeline.

[0007] Optionally, an annular block is fixedly sleeved to the outer wall of the drive motor. A plurality of extension rods are uniformly distributed on the outer wall of the annular block, and the ends of the extension rods away from the annular block are fixedly connected to the inner wall of the external pipeline. A rotating shaft is fixedly installed on the right end of the output shaft of the drive motor and located to the left of the heat dissipation assembly.

[0008] Optionally, the heat dissipation assembly comprises a disc, a fan blade and a side plate, the outer wall of the disc is uniformly provided with a plurality of fan blades, the left and right sides of the disc are respectively fixedly installed with the side plates located outside the fan blades, the left disc is fixedly connected with the right end of the rotating shaft, and the right disc is fixedly connected with the left end of the fixed block.

[0009] Optionally, the front end of the left side of the first cleaning brush is fixedly installed with a round rod, one end of the first cleaning brush away from the round rod is fixedly connected with a connecting rod, the front end of the right side of the first cleaning brush is fixedly installed with a connecting rod, one end of the connecting rod away from the first cleaning brush is fixedly connected with a first disc located on the left side of the filter plate, the right end of the first disc is fixedly installed with an insertion rod, the outer wall of the insertion rod is uniformly provided with a plurality of protrusions, and the outer wall of the protrusion is movably connected with the inner wall of the filter plate.

[0010] Optionally, the inner wall of the middle part of the filter plate is fixedly sleeved with an outer ring block, one side of the outer ring block away from the filter plate is rotatably connected with an inner ring block, the outer wall of the inner ring block is equidistantly provided with a plurality of rolling balls, the inner side of the rolling ball is rotatably connected with the inner ring block, the outer side of the rolling ball is rotatably connected with the inner wall of the outer ring block, the inner wall of the inner ring block is uniformly provided with a plurality of recesses, and the inner wall of the recess is movably connected with the outer wall of the protrusion, the right end of the inner ring block is fixedly installed with a second disc located on the right side of the filter plate, and one side of the second disc away from the inner ring block is fixedly connected with an inner rod body.

[0011] Optionally, the front end of the left side of the second cleaning brush is fixedly installed with an outer rod body, the inner wall of the outer rod body is movably inserted with the outer wall of the inner rod body, and the outer rod body is detachably connected with the inner rod body through the filter plate.

[0012] Optionally, the inner side of the round rod is fixedly installed with a clamping block, the inner wall of the clamping block is movably connected with the outer wall of the fixed block, the upper and lower sides of the inner wall of the clamping block are fixedly installed with T-shaped rods, one end of the T-shaped rod away from the clamping block is movably connected with the inner side of the fixed block, the right side of the clamping block is fixedly installed with a baffle, and one end of the baffle away from the clamping block is fixedly connected with the left end of the round rod.

[0013] The present application has the following advantages: 1. The operating room different temperature and speed air supply device, through the cooperation between the ventilation duct, the external pipeline, the filter plate, the first cleaning brush and the second cleaning brush, the setting of the first cleaning brush and the second cleaning brush, the cleaning effect of the dust on the inner and outer surfaces of the filter plate is realized, the first cleaning brush and the second cleaning brush are respectively rotated on the inner and outer sides of the filter plate, so that the interference of the dust covered on the filter plate on the flow speed of the inner and outer air is avoided.

[0014] 2. This operating room temperature and speed air supply device, through the cooperation between ventilation ducts, external pipes, filter plates, first cleaning brush and spring clips, utilizes the setting of spring clips to realize the connection between heat dissipation components and first cleaning brushes. By changing the connection method between spring clips and heat dissipation components, the disassembly and assembly steps of first cleaning brushes from heat dissipation components are simplified, thereby facilitating the replacement of first cleaning brushes after wear.

[0015] 3. This operating room temperature and speed air supply device, through the cooperation between the ventilation duct, external pipe, inner ring block, fastening bolt, and second cleaning brush, utilizes the fastening bolt to achieve the connection between the second cleaning brush and the inner ring block. By changing the connection method between the fastening bolt and the second cleaning brush or the inner ring block, the disassembly and assembly steps of the second cleaning brush on the inner ring block are simplified, thereby facilitating the replacement of the second cleaning brush after wear. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the activated carbon plate in the structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the ventilation duct in the structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the external pipe in the structure of the present invention; Figure 5 This is a schematic diagram of the heat dissipation component in the structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the spring clip in the structure of the present invention; Figure 7 This is a schematic diagram of the T-shaped rod in the structure of the present invention; Figure 8 This is a schematic diagram of the filter plate in the structure of the present invention; Figure 9 In the structure of this invention Figure 8 An enlarged schematic diagram of point A; Figure 10 This is a schematic diagram of the groove in the structure of the present invention.

[0017] In the figure: 1, ventilation duct; 2, activated carbon plate; 3, external pipeline; 4, drive motor; 5, heat dissipation assembly; 501, disc; 502, fan blade; 503, side plate; 6, fixed block; 7, spring buckle; 8, first cleaning brush; 9, filter plate; 10, second cleaning brush; 11, fastening bolt; 12, limiting plate; 13, top plate; 14, pull rod; 15, annular block; 16, extension rod; 17, rotating shaft; 18, round rod; 19, connecting rod; 20, first disc; 21, insertion rod; 22, protruding block; 23, outer ring block; 24, inner ring block; 25, groove; 26, ball; 27, second disc; 28, inner rod body; 29, outer rod body; 30, clamping block; 31, T-shaped rod; 32, baffle. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0019] Please refer to Figure 1 , Figure 3 and Figure 8 , the present application provides technical solutions: operating room different temperature and different speed air supply device, including ventilation duct 1, the inside of ventilation duct 1 is movably inserted with activated carbon plate 2, the right side of ventilation duct 1 is detachably connected with external pipeline 3 through bolt, external pipeline 3 is installed at the right end of ventilation duct 1 through bolt, drive motor 4 is fixedly installed in the inside of external pipeline 3, the right end of drive motor 4 output shaft is fixedly connected with heat dissipation assembly 5, heat dissipation assembly 5 is driven by drive motor 4, which accelerates the flow of air inside and outside the pipeline, fixed block 6 is fixedly installed on the side of heat dissipation assembly 5 away from drive motor 4, spring buckle 7 is arranged on the front and back sides of fixed block 6, by changing the connection mode of spring buckle 7 and first cleaning brush 8, it is convenient to replace the first cleaning brush 8 after wearing, first cleaning brush 8 is movably installed at the right end of fixed block 6, and first cleaning brush 8 is connected with fixed block 6 through spring buckle 7, filter plate 9 is connected at the right side of first cleaning brush 8 through bolt at the right end of external pipeline 3, after air enters the inside of external pipeline 3 from filter plate 9, it enters the inside of ventilation duct 1, and then is filtered again by activated carbon plate 2, second cleaning brush 10 is arranged on the side of filter plate 9 away from first cleaning brush 8, the rotation of first cleaning brush 8 and second cleaning brush 10 is convenient for cleaning the dust on the inside and outside of filter plate 9, fastening bolt 11 is threadedly connected to the left side of second cleaning brush 10.

[0020] The outer wall of the activated carbon plate 2 is fixedly sleeved with a limiting plate 12, the outer wall of the limiting plate 12 is movably clamped with the inner wall of the ventilation duct 1, the upper end of the activated carbon plate 2 is fixedly installed with a top plate 13, the end of the top plate 13 away from the activated carbon plate 2 is fixedly connected with a pull rod 14, the upper end of the pull rod 14 extends to the outside of the ventilation duct 1, and the pull rod 14 is arranged to facilitate the removal of the activated carbon plate 2 from the ventilation duct 1.

[0021] Please refer to Figure 2 、 Figure 5 and Figure 6 , the outer wall of the driving motor 4 is fixedly sleeved with an annular block 15, the outer wall of the annular block 15 is uniformly distributed with a plurality of extension rods 16, and the end of the extension rod 16 away from the annular block 15 is fixedly connected with the inner wall of the outer connecting duct 3, the right end of the output shaft of the driving motor 4 is fixedly installed with a rotating shaft 17 located on the left side of the heat dissipation assembly 5, and the rotating shaft 17 is arranged to connect the heat dissipation assembly 5 and the driving motor 4.

[0022] The heat dissipation assembly 5 comprises a disc 501, a fan blade 502 and a side plate 503, the driving motor 4 is opened to drive the rotation of the fan blade 502 through the connection of the rotating shaft 17, the left side plate 503 and the disc 501, the rotation of the fan blade 502 drives the rotation of the fan blade 502 at the same time, the rotation of the fan blade 502 accelerates the flow of air, the outer wall of the disc 501 is uniformly distributed with a plurality of fan blades 502, the left and right sides of the disc 501 are respectively fixedly installed with side plates 503 located on the outer side of the fan blade 502, the left disc 501 is fixedly connected with the right end of the rotating shaft 17, and the right disc 501 is fixedly connected with the left end of the fixed block 6.

[0023] Please refer to Figure 4 、 Figure 7 and Figure 9 , the front end of the left side of the first cleaning brush 8 is fixedly installed with a round rod 18, the end of the first cleaning brush 8 away from the round rod 18 is fixedly connected with a connecting rod 19, the front end of the right side of the first cleaning brush 8 is fixedly installed with a connecting rod 19, the end of the connecting rod 19 away from the first cleaning brush 8 is fixedly connected with a first disc 20 located on the left side of the filter plate 9, the right end of the first disc 20 is fixedly installed with a plug rod 21, the outer wall of the plug rod 21 is uniformly distributed with a plurality of protrusions 22, and the outer wall of the protrusions 22 is movably clamped with the inner wall of the filter plate 9.

[0024] The inner wall of the middle part of the filter plate 9 is fixedly sleeved with an outer ring block 23, the side away from the filter plate 9 of the outer ring block 23 is rotationally connected with an inner ring block 24, the outer wall of the inner ring block 24 is equidistantly provided with a plurality of rolling balls 26, the inner side of the rolling ball 26 is rotationally connected with the inner ring block 24, the rolling ball 26 rolls between the inner ring block 24 and the outer ring block 23, the friction generated after the direct contact of the inner ring block 24 and the outer ring block 23 is reduced, the outer side of the rolling ball 26 is rotationally connected with the inner wall of the outer ring block 23, the inner wall of the inner ring block 24 is uniformly provided with a plurality of grooves 25, and the inner wall of the groove 25 is movably clamped with the outer wall of the convex block 22, the right end of the inner ring block 24 is fixedly installed with a second disc 27 located on the right side of the filter plate 9, the side away from the inner ring block 24 of the second disc 27 is fixedly connected with an inner rod body 28, the first cleaning brush 8 rotates at the same time to drive the connecting rod 19, the first disc 20, the inserting rod 21 and the convex block 22 to rotate at the same time, since the convex block 22 is clamped in the inner part of the groove 25, and the inserting rod 21 is inserted in the inner part of the inner ring block 24, the convex block 22 rotates at the same time to drive the inner ring block 24 to rotate in the outer ring block 23 through the clamping of the convex block 22 and the groove 25, at this time, the rolling ball 26 rolls between the inner ring block 24 and the outer ring block 23, the inner ring block 24 rotates at the same time to drive the second cleaning brush 10 to rotate on the right side of the filter plate 9 through the connection of the second disc 27, the inner rod body 28, the outer rod body 29 and the fastening bolt 11, the rotation of the filter plate 9 can clean the dust attached to the surface of the second cleaning brush 10, and prevent the filter plate 9 from being covered with dust to affect the flow of the air inside and outside.

[0025] Please refer to Figure 10 and Figure 6 , the front end of the left side of the second cleaning brush 10 is fixedly installed with an outer rod body 29, the inner wall of the outer rod body 29 is movably inserted with the outer wall of the inner rod body 28, the connection of the outer rod body 29 and the inner rod body 28 through the fastening bolt 11 enables the first cleaning brush 8 to rotate at the same time to drive the second cleaning brush 10 to rotate at the same time through the connection of the fastening bolt 11, the outer rod body 29 is detachably connected with the inner rod body 28 through the filter plate 9.

[0026] The inner side of the circular rod 18 is fixedly installed with a clamping block 30, the fixed block 6 is connected with the clamping block 30 through the spring buckle 7, the clamping block 30 moves at the same time to drive the first cleaning brush 8 to rotate on the left side of the filter plate 9 through the connection of the baffle 32 and the circular rod 18, at this time, the rotation of the first cleaning brush 8 can sweep the dust covered on the left side of the filter plate 9, the inner wall of the clamping block 30 is movably clamped with the outer wall of the fixed block 6, the upper and lower sides of the inner wall of the clamping block 30 are fixedly installed with T-shaped rods 31, one end away from the clamping block 30 of the T-shaped rod 31 is movably clamped with the inner side of the fixed block 6, the right side of the clamping block 30 is fixedly installed with a baffle 32, and one end away from the clamping block 30 of the baffle 32 is fixedly connected with the left end of the circular rod 18.

[0027] In summary, the operating room heterothermy heterospeed air supply device, in use, first, by bolt installed in the right end of the ventilation duct 3 pipeline 1, and then through the bolt filter plate 9 installed in the right end of the external pipeline 3, and then through the fastening bolt 11 on the connection of the outer rod 29 and the inner rod 28, then, open the power of the driving motor 4, driving motor 4 open through the shaft 17, left side plate 503 and disc 501 connection driven fan blade 502 rotation, fan blade 502 rotation at the same time driven fan blade 502 rotation, fan blade 502 rotation to accelerate the flow of air, disc 501 rotation at the same time through the right side plate 503 connection driven fixed block 6 rotation, fixed block 6 through the spring buckle 7 and the engagement block 30 connection, engagement block 30 movement in turn through the baffle 32, round rod 18 connection driven first cleaning brush 8 rotation in the left side of the filter plate 9, at this time, the first cleaning brush 8 can be swept off the dust on the left side of the filter plate 9, then, the first cleaning brush 8 rotation in turn driven connecting rod 19, the first disc 20, the plug rod 21 and the convex block 22 rotation, because the convex block 22 is connected in the recess 25 inside, at the same time the plug rod 21 is inserted in the inner ring block 24 inside, convex block 22 rotation at the same time through the convex block 22 and the recess 25 connection driven inner ring block 24 rotation in the outer ring block 23, at this time the ball 26 rolls between the inner ring block 24 and the outer ring block 23, the inner ring block 24 rotation at the same time through the second disc 27, inner rod 28, outer rod 29 and fastening bolt 11 connection, driven second cleaning brush 10 rotation in the right side of the filter plate 9, the rotation of the filter plate 9 can clean the dust attached to the surface of the second cleaning brush 10, prevent the filter plate 9 covered by dust affect the flow of air inside and outside, finally, the air from the filter plate 9 into the external pipeline 3 into the ventilation duct 1 inside, again through the activated carbon plate 2 of the second filtration.

[0028] In the description of the application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or equipment.

[0029] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. An operating room temperature and velocity air supply device, comprising a ventilation duct (1), characterized in that: An activated carbon plate (2) is movably inserted inside the ventilation duct (1). An external pipe (3) is detachably connected to the right side of the ventilation duct (1) by bolts. A drive motor (4) is fixedly installed inside the external pipe (3). A heat dissipation component (5) is fixedly connected to the right end of the output shaft of the drive motor (4). A fixing block (6) is fixedly installed on the side of the heat dissipation component (5) away from the drive motor (4). Spring clips (7) are provided on both the front and rear sides of the fixing block (6). A first cleaning brush (8) is movably installed on the right end of the fixing block (6), and the first cleaning brush (8) is connected to the fixing block (6) by spring clips (7). A filter plate (9) located to the right of the first cleaning brush (8) is connected to the right end of the external pipe (3) by bolts. A second cleaning brush (10) is provided on the side of the filter plate (9) away from the first cleaning brush (8). A fastening bolt (11) is threadedly connected to the left side of the second cleaning brush (10).

2. The operating room temperature and velocity air supply device according to claim 1, characterized in that: The outer wall of the activated carbon plate (2) is fixedly fitted with a limiting plate (12), and the outer wall of the limiting plate (12) is movably engaged with the inner wall of the ventilation duct (1). A top plate (13) is fixedly installed on the upper end of the activated carbon plate (2), and a pull rod (14) is fixedly connected to the end of the top plate (13) away from the activated carbon plate (2), and the upper end of the pull rod (14) extends to the outside of the ventilation duct (1).

3. The operating room temperature and velocity air supply device according to claim 1, characterized in that: The outer wall of the drive motor (4) is fixedly fitted with an annular block (15). Several extension rods (16) are evenly distributed on the outer wall of the annular block (15). The end of the extension rod (16) away from the annular block (15) is fixedly connected to the inner wall of the external pipe (3). The right end of the output shaft of the drive motor (4) is fixedly installed with a rotating shaft (17) located on the left side of the heat dissipation assembly (5).

4. The operating room temperature and velocity air supply device according to claim 3, characterized in that: The heat dissipation assembly (5) includes a disk (501), fan blades (502) and a side plate (503). The outer wall of the disk (501) is evenly distributed with a number of fan blades (502). The left and right sides of the disk (501) are respectively fixedly installed with side plates (503) located outside the fan blades (502). The left side of the disk (501) is fixedly connected to the right end of the rotating shaft (17), and the right side of the disk (501) is fixedly connected to the left end of the fixing block (6).

5. The operating room temperature and velocity air supply device according to claim 1, characterized in that: A round rod (18) is fixedly installed at the front end of the left side of the first cleaning brush (8). A connecting rod (19) is fixedly connected to the end of the first cleaning brush (8) away from the round rod (18). A connecting rod (19) is fixedly installed at the front end of the right side of the first cleaning brush (8). A first disc (20) located on the left side of the filter plate (9) is fixedly connected to the end of the connecting rod (19) away from the first cleaning brush (8). An insert rod (21) is fixedly installed at the right end of the first disc (20). Several protrusions (22) are evenly distributed on the outer wall of the insert rod (21), and the outer wall of the protrusions (22) is movably engaged with the inner wall of the filter plate (9).

6. The operating room temperature and velocity air supply device according to claim 1, characterized in that: An outer ring block (23) is fixedly sleeved on the inner wall of the middle part of the filter plate (9). An inner ring block (24) is rotatably connected to the side of the outer ring block (23) away from the filter plate (9). A number of balls (26) are evenly distributed on the outer wall of the inner ring block (24). The inner side of the balls (26) is rotatably connected to the inner ring block (24). The outer side of the balls (26) is rotatably connected to the inner wall of the outer ring block (23). A number of grooves (25) are evenly opened on the inner wall of the inner ring block (24). The inner wall of the grooves (25) is movably engaged with the outer wall of the protrusion (22). A second disc (27) located on the right side of the filter plate (9) is fixedly installed on the right end of the inner ring block (24). An inner rod (28) is fixedly connected to the side of the second disc (27) away from the inner ring block (24).

7. The operating room temperature and velocity air supply device according to claim 6, characterized in that: The second cleaning brush (10) has an outer rod (29) fixedly installed on the front end of the left side. The inner wall of the outer rod (29) is movably inserted into the outer wall of the inner rod (28). The outer rod (29) is detachably connected to the inner rod (28) through the filter plate (9).

8. The operating room temperature and velocity air supply device according to claim 5, characterized in that: A locking block (30) is fixedly installed on the inner side of the round rod (18). The inner wall of the locking block (30) is movably locked with the outer wall of the fixing block (6). T-shaped rods (31) are fixedly installed on both the upper and lower sides of the inner wall of the locking block (30). The end of the T-shaped rod (31) away from the locking block (30) is movably locked with the inner side of the fixing block (6). A baffle (32) is fixedly installed on the right side of the locking block (30). The end of the baffle (32) away from the locking block (30) is fixedly connected to the left end of the round rod (18).

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