Screw feeder capable of discharging at constant speed

Abstract

The utility model belongs to the technical field of feeders, and discloses a screw feeder capable of discharging at a constant speed, which comprises a conveyor shell and a constant-speed feeding tank arranged above the conveyor shell, a feeding port is formed in the top of the constant-speed feeding tank, and a rotating rod and a partition plate located below the rotating rod are arranged in the constant-speed feeding tank. A dredging rod is arranged at the lower end of the rotating rod and makes contact with the upper surface of the partition plate, and a material passing opening is formed in the partition plate. A discharging opening is formed in the conveying machine shell; the feeding port is communicated with the discharging port through the material passing port and the conveying machine shell. Materials are dredged through the dredging rod, pushed to the material passing opening and fall into the conveying machine shell through the material passing opening, constant-speed discharging is achieved, feeding blockage is avoided, and continuous and stable chlor-alkali production is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of feeding machine technology, specifically relating to a screw feeder capable of uniformly discharging materials, used in the feeding of chlor-alkali production. Background Technology

[0002] Screw feeders are material conveying equipment that integrates stable flow conveying, weighing and metering, and quantitative control of powder materials. Due to the adoption of many advanced technologies, screw feeders are reliable in operation and have high control precision. They are suitable for continuous metering and batching of powder materials in various industrial production environments. Especially in chlor-alkali production, powders such as coke and calcium carbide are mainly used for energy supply and chemical reactions in the electrolysis process. Therefore, screw feeders are often used to transfer these materials to chlor-alkali production.

[0003] Traditional screw feeders consist of a screw conveyor body. To ensure material delivery, a feed inlet is located at one end of the screw conveyor body, and a discharge outlet is located at the other end. During feeding, powdered material is fed in through the feed inlet, conveyed by the screw conveyor body, and then discharged from the discharge outlet into the final production process. Although existing screw feeders can feed powdered materials, they have the following problems:

[0004] Existing screw feeders lack a drainage device at the feed inlet. This is especially problematic when feeding fine powdery materials such as coke or calcium carbide, resulting in slow material discharge and incomplete material falling, which prevents timely material feeding. This leads to blockage at the feed end of the screw feeder, requiring shutdown for cleaning or maintenance, thus affecting the stable and continuous operation of chlor-alkali production. Utility Model Content

[0005] The purpose of this invention is to provide a screw feeder capable of uniformly discharging materials, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A screw feeder capable of uniformly discharging materials includes a conveyor housing and a uniform feeding tank placed above the conveyor housing; the top of the uniform feeding tank is provided with a feed inlet, and a rotating rod and a partition plate located below the rotating rod are provided inside the uniform feeding tank; a guide rod is provided at the lower end of the rotating rod, and the guide rod contacts the upper surface of the partition plate, and a material passage is opened on the partition plate; a discharge port is provided on the conveyor housing; the feed inlet is connected to the discharge port through the material passage, the conveyor housing, and the discharge port.

[0008] Further specified, a scraper is provided at the end of the guide rod away from the rotating rod, and the scraper contacts the inner wall of the uniform feed tank.

[0009] Further limited, the said dredging rod is one or more, when the said dredging rod is multiple, multiple said dredging rod is evenly distributed along the circumference of the rotating rod.

[0010] Further limited, the said uniform speed feeder tank is provided with motor one on the outer wall, the output end of motor one is provided with transmission rod one, and the top end of the transmission rod one is in transmission connection with the rotating rod.

[0011] Further limited, the top of the rotating rod is provided with transmission wheel one, transmission wheel two is arranged on the transmission rod one, and the transmission wheel one is in transmission connection with the transmission wheel two through a transmission belt.

[0012] Further limited, the said conveyor shell is provided with spiral feeding rod, motor two is arranged on the outer wall of the conveyor shell, and the spiral feeding rod is connected with motor two; the feeding port is communicated with the discharge port through the spiral feeding rod.

[0013] Further limited, the said conveyor shell is further provided with cleaning rods, and the cleaning rods are multiple and are distributed on the opposite side walls of the spiral feeding rod at equal intervals.

[0014] Further limited, the said spiral feeder capable of uniform speed feeding further comprises a moving rod and a reciprocating mechanism, the moving rod is horizontally arranged beside the uniform speed feeder tank, a contact plate is arranged on one end of the moving rod close to the uniform speed feeder tank, the reciprocating mechanism is connected with the moving rod, and the moving rod is driven to stretch and retract along the horizontal direction to contact and separate from the outer wall of the uniform speed feeder tank.

[0015] Further limited, the said reciprocating mechanism comprises a support plate, a rotating disc, a swing rod, a transmission rod two and a motor three, the motor three is arranged on the support plate, the motor three is connected with the rotating disc through the transmission rod two, a sliding block is arranged on the rotating disc, an inner rail groove is arranged on the swing rod, the sliding block is clamped in the inner rail groove, one end of the swing rod is movably connected with the support plate, and the other end of the swing rod is movably connected with the moving rod.

[0016] Further limited, the said spiral feeder capable of uniform speed feeding further comprises a vertical rod one, an interactive port is formed in the vertical rod one, the moving rod passes through the vertical rod one through the interactive port, a guide groove is arranged on the side wall of the moving rod, a guide block is arranged on the inner wall of the interactive port, and the guide block is clamped in the guide groove; the support plate is connected with the vertical rod one.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1、The utility model discloses a spiral feeder capable of uniform speed feeding, which comprises a conveyor shell and a uniform speed feeder tank arranged above the conveyor shell, a dredging rod is arranged in the uniform speed feeder tank, the dredging rod is used for dredging materials, the materials are pushed to a feeding port and then fall into the conveyor shell through the feeding port, uniform speed feeding is realized, feeding blockage is avoided, and continuous and stable chlor-alkali production is ensured.

[0019] 2、The utility model discloses a scraper is established on the one end of the dredging pole away from the rotating lever, and the scraper is contacted with the inner wall of the constant -speed feeding tank, and the residual material in the constant -speed feeding tank is scraped down through the scraper, avoids the need of the constant cleaning of the constant -speed feeding tank due to the residual too much material.

[0020] 3、The utility model discloses a transmission wheel one, transmission belt, transmission wheel two, transmission rod one and motor one cooperate and use, can realize the rotation of rotating lever, to drive the rotation of the dredging pole connected at the bottom of rotating lever and push the residual material on the baffle, realize automatic unloading, convenient operation.

[0021] 4、The utility model discloses a motor two drive spiral feeding rod rotation is used for conveying the material in the conveyor shell, concentrates and conveys to the discharge gate and unloads, further sets up the cleaning rod, and the cleaning rod will rotate synchronously with spiral feeding rod, is used for contacting the top wall and the lower bottom wall on the conveyor shell and scraping the material adhered on, and need not the operation of cleaning the conveyor shell in the later period extra.

[0022] 5、The utility model discloses a motor three and transmission rod two drive rotating disc rotation, and the slider connected on the surface of rotating disc will move to and fro along the inside track of swing lever, and the swing lever is limited to the bottom end and makes the moving rod to and fro telescopic, repeatedly pushes the contact plate and knocks and hits the outside of constant -speed feeding tank, effectively accelerates the through speed of material between constant -speed feeding tank and conveyor shell, greatly reduces the problem of material blockage due to the untimely falling of material.

[0023] 6、The utility model discloses a swing lever pushes the moving rod and repeatedly pushes the contact plate, through the location effect of the guiding sliding of guide block along guide groove, makes the moving rod left and right action in the interaction mouth, improves the stability of transmission. ACCURATE DRAWING

[0024] Figure 1 It is the front view structure schematic drawing of the utility model;

[0025] Figure 2 It is the baffle and the material outlet connection overhead structure schematic drawing of the utility model;

[0026] Figure 3 It is the dredging pole and scraper connection overhead structure schematic drawing of the utility model;

[0027] Figure 4 It is the rotating disc and swing lever connection side structure schematic drawing of the utility model;

[0028] Figure 5 It is the spiral feeding rod and cleaning rod connection side structure schematic drawing of the utility model;

[0029] In the drawing:

[0030] 1, conveyor shell; 2, interactive mouth; 3, moving rod; 4, slider; 5, rotating disc; 6, swing rod; 7, support plate; 8, hinged seat; 9, support plate; 10, vertical rod one; 11, guide block; 12, guide groove; 13, contact plate; 14, feed inlet; 15, transmission wheel one; 16, transmission belt; 17, transmission wheel two; 18, transmission rod one; 19, motor one; 20, rotating rod; 21, scraping rod; 22, dredging rod; 23, partition plate; 24, motor two; 25, material passage; 26, vertical rod two; 27, spiral feeding rod; 28, cleaning rod; 29, discharge port; 30, transmission rod two; 31, motor three; 32, constant-speed feeding tank. DETAILED DESCRIPTION

[0031] 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. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0034] Example 1

[0035] Referring to Figure 1 , Figure 2 and Figure 3 , the present embodiment provides a spiral feeder capable of uniform speed feeding, comprising a conveyor shell 1 and a constant-speed feeding tank 32 arranged above the conveyor shell 1; the top of the constant-speed feeding tank 32 is provided with a feed inlet 14, and the constant-speed feeding tank 32 is provided with a rotating rod 20 and a partition plate 23 located below the rotating rod 20; the lower end of the rotating rod 20 is provided with a dredging rod 22, and the dredging rod 22 is in contact with the upper surface of the partition plate 23, and the partition plate 23 is provided with a material passage 25; the conveyor shell 1 is provided with a discharge port 29; the feed inlet 14 is communicated with the discharge port 29 through the material passage 25 and the conveyor shell 1.

[0036] Specifically, the top of the conveyor shell 1 is connected with the uniform feeding tank 32, and the bottom of the conveyor shell 1 is connected with the vertical rod two 26, and the bottom of the vertical rod two 26 is provided with a bottom plate for supporting the conveyor shell 1 through the vertical rod two 26 to improve stability.

[0037] In the embodiment, the end of the dredging rod 22 away from the rotating rod 20 is provided with the scraping rod 21, and the scraping rod 21 is in contact with the inner wall of the uniform feeding tank 32.

[0038] In the embodiment, the dredging rod 22 is one or more, and when the dredging rod 22 is multiple, the multiple dredging rods 22 are uniformly distributed along the circumference of the rotating rod 20.

[0039] Preferably, the dredging rod 22 is two, and both are connected with the rotating rod 20, and the two dredging rods 22 are symmetrically distributed about the axial direction of the rotating rod 20.

[0040] Referring to Figure 1 In the embodiment, the outer wall of the uniform feeding tank 32 is provided with the motor one 19, the output end of the motor one 19 is provided with the transmission rod one 18, the transmission rod one 18 is in transmission connection with the top end of the rotating rod 20. The top of the rotating rod 20 is provided with the transmission wheel one 15, the transmission rod one 18 is provided with the transmission wheel two 17, the transmission wheel one 15 is in transmission connection with the transmission wheel two 17 through the transmission belt 16; the motor one 19 is connected with the transmission wheel two 17 through the transmission rod one 18, and the transmission of the transmission belt 16 makes the transmission wheel one 15 and the transmission wheel two 17 rotate synchronously, so that the motor one 19 drives the transmission wheel two 17 to rotate through the transmission rod one 18 first, then the transmission wheel two 17 drives the transmission wheel one 15 to rotate synchronously through the transmission belt 16, and then drives the rotating rod 20 to rotate, so as to realize automatic and uniform feeding.

[0041] Specific, the top of the constant feeder tank 32 is connected with the inlet 14, the inside of the constant feeder tank 32 is connected with the partition plate 23, the top of the partition plate 23 is bearing connected with the rotating rod 20, the two sides of the bottom of the rotating rod 20 are connected with the dredging rod 22; the top of the rotating rod 20 is connected with the transmission wheel one 15, the transmission wheel one 15, the transmission belt 16, the transmission wheel two 17, the transmission rod one 18 and the motor one 19 are arranged and used in cooperation, which can drive the rotating rod 20 to rotate, then drive the dredging rod 22 connected with the bottom of the rotating rod 20 to rotate and push the residual material on the partition plate 23, until the material is pushed to the material passage 25 and falls into the conveyor shell 1 through the material passage, so that the constant feeding is realized and the residual material in the constant feeder tank 32 is reduced. One side of the outside of the constant feeder tank 32 is provided with the transmission wheel two 17, the transmission wheel one 15 and the transmission wheel two 17 are connected through the transmission belt 16, the inside of the transmission wheel two 17 is connected with the transmission rod one 18, and the bottom of the transmission rod one 18 is provided with the motor one 19. One side of the inside of the partition plate 23 is connected with the material passage 25, and the bottom of the constant feeder tank 32 is communicated with the conveyor shell 1; the material is uniformly fallen through the material passage through the dredging of the dredging rod, so that the effect of uniform material feeding is achieved.

[0042] Referring to Figure 1 In the embodiment, the conveyor shell 1 is provided with the spiral feeding rod 27, the outer wall of the conveyor shell 1 is provided with the motor two 24, and the spiral feeding rod 27 is connected with the motor two 24; the material passage 25 is communicated with the discharge port 29 through the spiral feeding rod 27.

[0043] Specifically, the inside of the conveyor shell 1 is provided with the spiral feeding rod 27, one end of the spiral feeding rod 27 extends to one side of the outside of the conveyor shell 1 and is provided with the motor two 24, the motor two 24 is arranged, can drive the spiral feeding rod 27 to rotate, is used for conveying the material in the conveyor shell 1, concentrates and conveys to the discharge port 29 and carries out the unloading; one side of the bottom of the conveyor shell 1 is connected with the discharge port 29.

[0044] Referring to Figure 1 and Figure 5 In the embodiment, the conveyor shell 1 is also provided with the cleaning rod 28, the cleaning rod 28 is a plurality of and is distributed on the symmetrical side walls of the spiral feeding rod 27 at equal intervals.

[0045] The top and bottom of the spiral feeding rod 27 are connected with the cleaning rod 28 at equal intervals, the cleaning rod 28 is arranged, the cleaning rod 28 will rotate synchronously with the spiral feeding rod 27, is used for contacting the top and bottom walls in the conveyor shell 1 and scraping the material adhered thereon, so that the operation of cleaning the conveyor shell 1 in the later period is not needed; and the upper and lower distributed cleaning rods 28 are staggered, so that the cleaning efficiency is improved.

[0046] Embodiment 2

[0047] Referring to Figure 1On the basis of embodiment 1, the spiral feeder capable of uniform feeding provided in the embodiment further comprises a moving rod 3 and a reciprocating mechanism, the moving rod 3 is horizontally arranged beside the uniform feeding tank 32, a contact plate 13 is arranged at one end of the moving rod 3 close to the uniform feeding tank 32, the reciprocating mechanism is connected with the moving rod 3, and drives the moving rod 3 to stretch and retract along the horizontal direction to contact and separate from the outer wall of the uniform feeding tank 32.

[0048] In the embodiment, the reciprocating mechanism converts the rotary motion into linear motion, thereby reciprocating the moving rod 3 in the horizontal direction to approach or move away from the uniform feeding tank 32, and reciprocating impact on the uniform feeding tank 32 is realized, so that the discharging speed in the uniform feeding tank 32 is effectively accelerated.

[0049] In the embodiment, the reciprocating mechanism can be a crank slider mechanism or a gear and rack mechanism.

[0050] Referring to Figure 1 Preferably, the reciprocating mechanism comprises a support plate 9, a rotating disc 5, a swing rod 6, a transmission rod two 30 and a motor three 31; the motor three 31 is arranged on the support plate 9, the motor three 31 is connected with the rotating disc 5 through the transmission rod two 30, a sliding block 4 is arranged on the rotating disc 5, an inner rail groove is arranged on the swing rod 6, the sliding block 4 is clamped in the inner rail groove, one end of the swing rod 6 is connected with the support plate 9, and the other end of the swing rod 6 is movably connected with the moving rod 3.

[0051] The spiral feeder capable of uniform feeding provided in the embodiment further comprises a vertical rod one 10, the vertical rod one 10 is provided with an interaction opening 2, the moving rod 3 passes through the vertical rod one 10 through the interaction opening 2, a guide groove 12 is arranged on the side wall of the moving rod 3, a guide block 11 is arranged on the inner wall of the interaction opening 2, and the guide block 11 is clamped in the guide groove 12; the support plate 9 is connected with the vertical rod one 10.

[0052] Referring to Figure 1 and Figure 4A vertical rod one 10 is arranged on the base plate, the vertical rod one 10 is arranged in parallel with the vertical rod two 26, a mutual port 2 is arranged at the top of the vertical rod one 10, a moving rod 3 is arranged in the mutual port 2, the upper side wall and the lower side wall of the moving rod 3 are connected with guide grooves 12, the top and the bottom of the mutual port 2 are connected with guide blocks 11 matched with the guide grooves 12, the side of the moving rod 3 close to the uniform speed feeding tank 32 is connected with a contact plate 13, the side of the vertical rod one 10 away from the conveyor shell 1 is connected with a supporting plate 9, the top of the supporting plate 9 is connected with a swing rod 6 through a hinge seat 8, the other end of the swing rod 6 is hinged with the left side (the side away from the contact plate 13) of the moving rod 3, the supporting plate 9 is fixedly provided with a supporting plate 7, a motor three 31 is arranged in the supporting plate 7, the motor three 31 is connected with a rotating disc 5 through a transmission rod two 30, the surface of the rotating disc 5 is connected with a sliding block 4, the sliding block 4 is arranged in the inner rail groove of the swing rod 6 matched with the swing rod 6; when the motor three 31 drives the transmission rod two 30 to rotate, the rotating disc 5 is driven to rotate, due to the structure limiting of the swing rod 6, the sliding block 4 connected with the surface of the rotating disc 5 moves back and forth along the inner rail of the swing rod 6, the swing rod 6 is limited by the bottom end and the guide block 11 is guided to slide in the guide groove 12, the moving rod 3 is driven to move left and right in the mutual port 2, repeatedly pushes the contact plate 13 to knock and impact the outside of the uniform speed feeding tank 32, effectively accelerates the through speed of the material in the uniform speed feeding tank 32 and the conveyor shell 1 connecting port and the discharge port 29, greatly reduces the problem of material blockage caused by the material falling not in time.

[0053] The utility model provides a spiral feeder of even speed down material, the use process is:

[0054] The powder material (coke or calcium carbide) enters the uniform speed feeding tank 32 from the feeding port 14 and is downwardly conveyed to the conveyor shell 1 through the material port 25, at this time, the transmission rod one 18, the transmission wheel two 17, the transmission belt 16 and the transmission wheel one 15 are sequentially rotated by starting the motor one 19, the rotating rod 20 is driven to rotate, the material remaining on the baffle 23 is pushed by the dredging rod 22 connected to the bottom of the rotating rod 20, until the material is pushed to the material port 25 and falls to the conveyor shell 1, realizing the uniform speed continuous down of the powder material and avoiding the blockage; at the same time, the scraper rod 21 also rotates with the rotating rod 20, the powder material remaining on the inner wall of the uniform speed feeding tank 32 is scraped and conveyed, improving the feeding efficiency of the powder material, and avoiding the equipment damage caused by the powder material continuously accumulating on the inner wall of the uniform speed feeding tank 32;

[0055] The powder material in the conveyor shell 1 is concentrated and conveyed to the discharge port 29 for down by starting the motor two 24 to drive the spiral feeding rod 27 to rotate, and then enters the chlor alkali production;

[0056] Meanwhile, the motor three 31 is started, so that the transmission rod two 30 drives the rotating disc 5 to rotate, and the sliding block 4 connected to the surface of the rotating disc 5 moves back and forth along the internal track of the swing rod 6, the swing rod 6 is limited by the bottom end and the guiding block 11 slides along the guiding groove 12, so that the moving rod 3 reciprocates in the interaction port 2 (in the horizontal direction) to reciprocate, repeatedly pushes the contact plate 13 to knock and impact the outside of the uniform feeding tank 32, accelerates the discharging speed of the powder material, and ensures uniform feeding.

[0057] The preferred embodiments of the utility model are merely used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A screw feeder capable of uniformly discharging materials, characterized in that, The system includes a conveyor housing (1) and a uniform feed tank (32) placed above the conveyor housing (1); the top of the uniform feed tank (32) is provided with a feed inlet (14), and a rotating rod (20) and a partition plate (23) located below the rotating rod (20) are provided inside the uniform feed tank (32); a guide rod (22) is provided at the lower end of the rotating rod (20), and the guide rod (22) contacts the upper surface of the partition plate (23), and a material passage (25) is opened on the partition plate (23); a discharge port (29) is provided on the conveyor housing (1); the feed inlet (14) is connected to the discharge port (29) through the material passage (25) and the conveyor housing (1).

2. The screw feeder capable of uniformly discharging materials according to claim 1, characterized in that: A scraper (21) is provided at one end of the guide rod (22) away from the rotating rod (20), and the scraper (21) is in contact with the inner wall of the uniform feed tank (32).

3. The screw feeder capable of uniformly discharging materials according to claim 2, characterized in that: There are one or more guide rods (22). When there are multiple guide rods (22), the multiple guide rods (22) are evenly distributed around the circumference of the rotating rod (20).

4. A screw feeder capable of uniformly discharging materials according to claim 3, characterized in that: The uniform feed tank (32) is equipped with a motor (19) on its outer wall. A transmission rod (18) is provided on the output end of the motor (19). The transmission rod (18) is connected to the top of the rotating rod (20) in a transmission connection.

5. A screw feeder capable of uniformly discharging materials according to claim 4, characterized in that: The top of the rotating rod (20) is provided with a first transmission wheel (15), and the first transmission rod (18) is provided with a second transmission wheel (17). The first transmission wheel (15) is connected to the second transmission wheel (17) via a transmission belt (16).

6. A screw feeder capable of uniformly discharging materials according to claim 5, characterized in that: The conveyor housing (1) is provided with a spiral feeding rod (27), and a motor (24) is provided on the outer wall of the conveyor housing (1). The spiral feeding rod (27) is connected to the motor (24). The feed inlet (25) is connected to the discharge outlet (29) through the spiral feeding rod (27).

7. A screw feeder capable of uniformly discharging materials according to claim 6, characterized in that: The conveyor housing (1) is also provided with cleaning rods (28), and there are multiple cleaning rods (28) that are evenly distributed on the opposite side walls of the spiral feeding rod (27).

8. A screw feeder capable of uniformly discharging materials according to claim 7, characterized in that: The screw feeder capable of uniform feeding also includes a moving rod (3) and a reciprocating mechanism. The moving rod (3) is horizontally placed beside the uniform feeding tank (32), and a contact plate (13) is provided at one end near the uniform feeding tank (32). The reciprocating mechanism is connected to the moving rod (3) and drives the moving rod (3) to extend and retract in the horizontal direction to contact and separate from the outer wall of the uniform feeding tank (32).

9. A screw feeder capable of uniformly discharging materials according to claim 8, characterized in that: The reciprocating mechanism includes a support plate (9), a turntable (5), a swing rod (6), a transmission rod two (30), and a motor three (31). The motor three (31) is placed on the support plate (9), and the motor three (31) is connected to the turntable (5) through the transmission rod two (30). A slider (4) is provided on the turntable (5), and an inner rail groove is provided on the swing rod (6). The slider (4) is stuck in the inner rail groove. One end of the swing rod (6) is movably connected to the support plate (9), and the other end of the swing rod (6) is movably connected to the moving rod (3).

10. A screw feeder capable of uniformly discharging materials according to claim 9, characterized in that: The screw feeder capable of uniformly discharging materials further includes a first upright rod (10), an interactive port (2) is provided on the first upright rod (10), a moving rod (3) passes through the first upright rod (10) through the interactive port (2), a guide groove (12) is provided on the side wall of the moving rod (3), a guide block (11) is provided on the inner wall of the interactive port (2), and the guide block (11) is stuck in the guide groove (12); the support plate (9) is connected to the first upright rod (10).

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