Waterproof sealed combiner

Abstract

The invention discloses a waterproof sealing type combiner, relates to the technical field of combiners, and aims to solve the problem that external water vapor directly intrudes into the combiner to cause corrosion when a sealing rubber ring of the combiner is influenced by pressure fluctuation, aged and fatigued to gradually lose the sealing capability. The outer-layer shell firstly blocks most of water vapor, even if the outer-layer sealing rubber ring is aged, the water vapor can only enter the interlayer, and the inner-layer shell can serve as a second defense line, so that the water vapor is further prevented from entering the combiner, and internal electronic elements are effectively protected; and the plugging mechanisms are arranged at the upper and lower gaps, so that water vapor cannot directly enter the inner layer through the gap of the outer layer and needs to bypass a staggered path, the water vapor invasion difficulty and the path length are greatly increased, the time for the water vapor to reach the interior is prolonged, and the risk that internal elements are damaged by the water vapor is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of combiners, and in particular to a waterproof and sealed combiner. Background Art

[0002] The combiner contains a large number of electronic components and circuit boards. Once water vapor enters, the insulation performance between different circuits may be reduced, which may lead to short circuit failure. Water and humid air will accelerate the corrosion of electronic components. Metal parts such as solder joints and pins are prone to oxidation after contact with moisture, generating metal oxides. These oxides will increase resistance, affect the quality of signal transmission, and may also cause the mechanical properties of components to deteriorate, eventually leading to component failure. Therefore, the waterproof sealing performance of the combiner is very important.

[0003] In this regard, Publication No.: CN219874002U discloses a waterproof structure of a combiner, including: a main unit, which includes a combiner housing and a sealing cover plate matched with the combiner housing, one end of the combiner housing is equipped with multiple groups of evenly distributed signal input ports, and the other end of the combiner housing is equipped with signal output ports matching the multiple groups of signal input ports; a waterproof sealing unit, which includes an upper sealing ring fixedly installed on the lower side wall of the sealing cover plate and a lower sealing ring installed on the inner wall of the combiner housing, the upper sealing ring is opposite to the lower sealing ring, and the side wall of the combiner housing is provided with multiple groups of evenly distributed installation grooves, and each of the upper inner walls of the installation grooves is fixedly installed with a temperature sensing tube. This utility model effectively solves the problem that in extremely cold or hot weather, the sealing ring made of rubber or silicone expands and contracts due to heat, thereby causing a gap between the sealing cover plate and the combiner housing, greatly reducing the waterproof effect, and shortening the service life of the combiner.

[0004] Existing combiners whose top covers can be opened usually use a sealing rubber ring between the top cover and the shell for waterproof sealing. When affected by external temperature changes or heat is generated inside the combiner, the internal and external air pressure difference caused by the internal and external temperature difference acts on the shell, and the pressure difference of the shell on the sealing material fluctuates continuously, causing the sealing material to be continuously subjected to the effects of tension, compression and other forces, accelerating the aging and fatigue of the sealing material, causing it to gradually lose its sealing ability, and then external water vapor can directly enter the interior of the combiner through the gap, causing corrosion to its internal components, thus affecting its service life.

[0005] In view of the above problems, a waterproof and sealed combiner is proposed. Summary of the invention

[0006] The purpose of the present invention is to provide a waterproof sealed combiner, which solves the problem in the background technology that when the sealing rubber ring is affected by pressure fluctuations, ages and fatigues and gradually loses its sealing ability, external water vapor will directly invade the inside of the combiner and cause corrosion.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a waterproof sealed combiner, comprising a combiner inner shell, a combiner outer shell is nested outside the combiner inner shell, heat dissipation components are arranged at equal intervals in the sandwich portion between the combiner inner shell and the combiner outer shell, the heat dissipation components are used to conduct the heat inside the combiner inner shell to the outside, a sealing cover inner shell is arranged on the top of the combiner inner shell, a sealing cover outer shell is arranged on the top of the combiner outer shell, the gap where the combiner inner shell is connected to the sealing cover inner shell and the gap where the combiner outer shell is connected to the sealing cover outer shell Two groups of connection seam sealing components are respectively installed at the gaps, and the two groups of connection seam sealing components are staggered up and down, and are used to seal the gap where the combiner inner shell and the sealing cover inner shell are connected, and the gap where the combiner outer shell and the sealing cover outer shell are connected, respectively. The top of the combiner inner shell is higher than the combiner outer shell. The part is installed with a plugging component, and the plugging component is used to separate and seal the interlayer space where the two groups of connection seam sealing components are located. The interlayer part of the sealing cover inner shell and the sealing cover outer shell is filled with a filling block, and the sealing cover inner shell is fixed together with the sealing cover outer shell through the filling block.

[0008] Preferably, the connecting seam sealing assembly includes an upper sealing strip mounting seat and a lower sealing strip mounting seat, and the upper sealing strip mounting seat and the lower sealing strip mounting seat are each provided in two groups, wherein one group of upper sealing strip mounting seats is fixedly connected to the bottom of the sealing cover outer shell, and its corresponding lower sealing strip mounting seat is fixedly connected to the top of the combiner outer shell, and the other group of upper sealing strip mounting seats is fixedly connected to the bottom of the sealing cover inner shell, and its corresponding lower sealing strip mounting seat is fixedly connected to the top of the combiner inner shell.

[0009] Preferably, the cross-sectional shapes of the upper sealing strip mounting seat and the lower sealing strip mounting seat are both set to be arc-shaped, the inner wall of the upper sealing strip mounting seat is fixedly connected with an upper convex strip, and the inner wall of the lower sealing strip mounting seat is fixedly connected with a lower convex strip.

[0010] Preferably, a sealing strip is arranged in the middle position between the upper sealing strip mounting seat and the lower sealing strip mounting seat, and two groups of grooves are symmetrically arranged on the upper and lower sides of the sealing strip, one group of grooves is snap-connected to the outside of the upper convex strip, and the other group of grooves is snap-connected to the outside of the lower convex strip.

[0011] Preferably, an anti-slip limit strip is fixedly connected to the side of the sealing strip, two groups of the anti-slip limit strips are symmetrically arranged about the vertical center axis of the sealing strip, and the cross-sectional shape of the anti-slip limit strip is set to be T-shaped.

[0012] Preferably, the blocking assembly comprises a spring leaf, which is arranged on the outer wall of the combiner inner shell, and the bottom end of the spring leaf is fixedly connected to the combiner inner shell, and the top end of the spring leaf is clearance-fitted to the combiner inner shell.

[0013] Preferably, a pressing block is tightly fitted on the top of the reed, and the pressing block is fixedly connected to the inner wall of the sealing cover shell. The reed moves downward with the sealing cover shell to squeeze the top of the reed to bend outward.

[0014] Preferably, a sealing rubber strip is fixedly connected to the outer wall of the spring sheet, a sealing rubber seat is tightly fitted to the side of the sealing rubber strip, and the sealing rubber seat is fixedly connected to the inner wall of the sealing cover shell.

[0015] Preferably, the heat dissipation assembly includes a heat dissipation column, one end of the heat dissipation column is fixedly connected to the inner shell of the combiner, and the other end of the heat dissipation column is fixedly connected to the outer shell of the combiner, the interior of the heat dissipation column is coaxially provided with a guide port, and the end of the guide port is fixedly connected to a connecting rod, and the guide port is fixed together with the heat dissipation column through the connecting rod.

[0016] Preferably, the end of the guide port is rotatably connected with a guide plate, and six guide plates are arranged at equal angles with respect to the end of the guide port. The outer wall of the guide port is fixedly connected with a limit stop block, and the limit stop block is used to limit the rotation direction of the guide plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention provides a waterproof sealed combiner, in which the outer shell of the combiner is designed to be double-layered. The double-layer outer shell structure itself provides double protection. The outer shell first blocks most of the water vapor. Even if the outer sealing rubber ring is aged, the water vapor can only enter the interlayer, and the inner shell can serve as a second line of defense to further prevent water vapor from invading the interior of the combiner, effectively protect the internal electronic components, and ensure their normal operation. The connecting gaps of the upper and lower covers of the inner and outer layers are staggered, and sealing mechanisms are provided at the upper and lower gaps. Water vapor cannot directly enter the inner layer through the outer gap and needs to bypass the staggered path. This greatly increases the difficulty and path length of water vapor intrusion, prolongs the time for water vapor to reach the interior, and reduces the risk of internal components being damaged by water vapor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic cross-sectional structure diagram of the housing portion of the combiner of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0021] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 4 It is a schematic cross-sectional structure diagram of the inner and outer shells and the sealing cover of the combiner of the present invention;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the connection seam sealing component part of the present invention;

[0024] Figure 6 It is a schematic cross-sectional structure diagram of the plugging component part of the present invention;

[0025] Figure 7 It is a schematic diagram of the internal structure of the heat dissipation component of the present invention;

[0026] Figure 8 It is a schematic diagram of the distribution state of the heat dissipation components of the present invention.

[0027] In the figure: 1, combiner inner shell; 2, combiner outer shell; 3, joint sealing assembly; 4, heat dissipation assembly; 5, plugging assembly; 6, sealing cover inner shell; 7, sealing cover outer shell; 8, filling block; 301, upper sealing strip mounting seat; 302, lower sealing strip mounting seat; 303, upper convex strip; 304, sealing rubber strip; 305, groove; 306, lower convex strip; 307, anti-drop limit strip; 401, heat dissipation column; 402, guide port; 403, connecting rod; 404, guide plate; 405, limit block; 501, spring leaf; 502, sealing rubber strip; 503, sealing rubber seat; 504, lower pressure block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0030] Combination Figure 1-Figure 8The present invention provides a waterproof sealed combiner, comprising a combiner inner shell 1, a combiner outer shell 2 is nested outside the combiner inner shell 1, heat dissipation components 4 are arranged at equal intervals in the interlayer between the combiner inner shell 1 and the combiner outer shell 2, and the heat dissipation components 4 are used to conduct the heat inside the combiner inner shell 1 to the outside, a sealing cover inner shell 6 is arranged on the top of the combiner inner shell 1, and a sealing cover outer shell 7 is arranged on the top of the combiner outer shell 2, and two sets of heat dissipation components are respectively installed at the gap where the combiner inner shell 1 and the sealing cover inner shell 6 are connected and at the gap where the combiner outer shell 2 and the sealing cover outer shell 7 are connected. The connection seam sealing assembly 3, the two groups of connection seam sealing assemblies 3 are staggered up and down, and are used to seal the gap between the combiner inner shell 1 and the sealing cover inner shell 6 and the gap between the combiner outer shell 2 and the sealing cover outer shell 7 respectively. The top of the combiner inner shell 1 is higher than the combiner outer shell 2. The part is installed with a plugging assembly 5. The plugging assembly 5 is used to separate and seal the interlayer space where the two groups of connection seam sealing assemblies 3 are located. The interlayer part of the sealing cover inner shell 6 and the sealing cover outer shell 7 is filled with a filling block 8, and the sealing cover inner shell 6 is fixed together with the sealing cover outer shell 7 through the filling block 8.

[0031] A double-layer shell is provided, and a double-layer sealing cover is provided correspondingly, and staggered joint sealing components 3 are provided between the inner and outer shells and their corresponding sealing covers, respectively. When the sealing strip 304 in the outer joint sealing component 3 is subjected to pressure fluctuations or corrosion from the external environment and fatigue aging occurs, and the sealing effect is poor, the external water vapor cannot directly invade the innermost part of the combiner, and can only enter the interlayer cavity of the shell. After the sealing cover is closed, the plugging component 5 is triggered, and the plugging component 5 is located in the middle of the two joint sealing components 3, and the outer joint sealing component 3 is located at When water vapor invades the bottom of the sealing component 5, it can only invade the inner layer of the interlayer cavity below the sealing component 5, and the connection gap between the sealing cover inner shell 6 and the combiner inner shell 1 is located above the sealing component 5, which means that the inner wall of the interlayer cavity below the sealing component 5 corresponds to the whole combiner inner shell 1, and there is no corresponding gap. Therefore, water vapor cannot invade the innermost part of the combiner. The connection seam sealing component 3 and the sealing component 5 on the inner and outer sides cooperate with each other, which is equivalent to providing three layers of sealing protection for the connection between the combiner sealing cover and the shell. Layer-by-layer sealing can effectively improve the sealing protection effect of the combiner.

[0032] The connection seam sealing assembly 3 includes an upper sealing strip mounting seat 301 and a lower sealing strip mounting seat 302. The upper sealing strip mounting seat 301 and the lower sealing strip mounting seat 302 are both provided with two groups, one of which is fixedly connected to the bottom of the sealing cover outer shell 7, and its corresponding lower sealing strip mounting seat 302 is fixedly connected to the top of the combiner outer shell 2, and the other group of upper sealing strip mounting seats 301 is fixedly connected to the bottom of the sealing cover inner shell 6, and its corresponding lower sealing strip mounting seat 302 is fixedly connected to the top of the combiner inner shell 1. The cross-sectional shapes of the upper sealing strip mounting seat 301 and the lower sealing strip mounting seat 302 are both set to arc-shaped, and the inner wall of the upper sealing strip mounting seat 301 is fixed An upper convex strip 303 is fixedly connected, a lower convex strip 306 is fixedly connected to the inner wall of the lower sealing strip mounting seat 302, a sealing strip 304 is arranged in the middle position between the upper sealing strip mounting seat 301 and the lower sealing strip mounting seat 302, two groups of grooves 305 are symmetrically arranged on the upper and lower sides of the sealing strip 304, one group of grooves 305 is snap-connected to the outside of the upper convex strip 303, and the other group of grooves 305 is snap-connected to the outside of the lower convex strip 306, an anti-slip limit strip 307 is fixedly connected to the side of the sealing strip 304, two groups of anti-slip limit strips 307 are symmetrically arranged about the vertical center axis of the sealing strip 304, and the cross-sectional shape of the anti-slip limit strip 307 is arranged to be T-shaped.

[0033] When the upper sealing cover and the shell are put together and fixed together by the screws on the outside, the upper sealing strip mounting seat 301 and the lower sealing strip mounting seat 302 work together to squeeze the sealing strip 304 in the middle position. The sealing strip 304 is squeezed and deformed to a certain extent, and fits tightly with the upper and lower sealing strip mounting seats 301 and the lower sealing strip mounting seats 302 on the upper and lower sides, thereby playing a sealing role. At the same time, the upper convex strip 303, the lower convex strip 306 and the groove 305 are provided to cooperate with each other and embed into the inside of the sealing strip 304, which can play a role in limiting the sealing strip 304 and prevent the sealing strip 304 from coming out. The displacement affects the sealing effect and also increases the complexity of the path for water vapor to enter the interior. Water vapor needs to constantly change direction and bypass layers of obstacles, which greatly increases the difficulty of penetration, thereby reducing the possibility of water vapor intrusion and improving the sealing effect. The anti-detachment limit strip 307 is used to assist in positioning when installing the sealing strip 304, so that the sealing strip 304 can be well stuck between the upper sealing strip mounting seat 301 and the lower sealing strip mounting seat 302. The sealing strip 304 is not fixedly connected to the upper sealing strip mounting seat 301 and the lower sealing strip mounting seat 302. When it ages and the sealing performance decreases, it can be removed and replaced.

[0034] The sealing assembly 5 includes a spring 501, which is arranged on the outer wall of the combiner inner shell 1, and the bottom end of the spring 501 is fixedly connected to the combiner inner shell 1, and the top of the spring 501 is clearance-fitted with the combiner inner shell 1, and the top of the spring 501 is tightly fitted with a pressing block 504, and the pressing block 504 is fixedly connected to the inner wall of the sealing cover shell 7. The spring 501 moves downward with the sealing cover shell 7 to squeeze the top of the spring 501 so that the spring 501 bends outward, and the outer wall of the spring 501 is fixedly connected with a sealing rubber strip 502, and the side of the sealing rubber strip 502 is tightly fitted with a sealing rubber seat 503, and the sealing rubber seat 503 is fixedly connected to the inner wall of the sealing cover shell 7.

[0035] When the sealing cover is closed, the lower pressing block 504 moves from top to bottom along with the sealing cover shell 7. When it contacts the top of the spring 501, it will generate a compressive force on the spring 501, squeezing the top of the spring 501 to move downward continuously. Since the bottom end of the spring 501 is fixed on the combiner inner shell 1, the spring 501 can only bend outward due to the pressure from the top, and then press the sealing rubber strip 502, so that it is tightly squeezed together with the sealing rubber seat 503, thereby playing a sealing and plugging role.

[0036] The heat dissipation assembly 4 includes a heat dissipation column 401, one end of the heat dissipation column 401 is fixedly connected to the combiner inner shell 1, and the other end of the heat dissipation column 401 is fixedly connected to the combiner outer shell 2, the interior of the heat dissipation column 401 is coaxially provided with a guide port 402, and the end of the guide port 402 is fixedly connected to a connecting rod 403, the guide port 402 is fixed to the heat dissipation column 401 through the connecting rod 403, the end of the guide port 402 is rotatably connected to a guide plate 404, and six guide plates 404 are arranged at equal angles with respect to the end of the guide port 402, the outer wall of the guide port 402 is fixedly connected to a limit stopper 405, and the limit stopper 405 is used to limit the rotation direction of the guide plate 404.

[0037] The interior of the heat dissipation column 401 is filled with heat transfer oil for dissipating the heat inside the combiner to the outside. The guide port 402 is horn-shaped, and its larger opening end faces the combiner inner shell 1. After the heat transfer oil inside is subjected to the heat from the combiner inner shell 1, it expands due to the heat, and flows from the larger opening end of the guide port 402 to the smaller opening end thereof. The flow rate is slightly accelerated by the contraction effect, thereby causing the heat transfer oil to be ejected outward from the small port of the guide port 402. The heat transfer oil between the outside of the guide port 402 and the heat dissipation column 401 is squeezed and can only flow toward the large port of the guide port 402. Due to the flow diversion effect of the shape of the guide port 402, the port area of ​​the cavity between its outer side and the heat dissipation column 401 is gradually reduced, which has a contraction-accelerating effect on the flowing heat transfer oil, thereby forming a circulating flow inside the heat dissipation column 401, thereby accelerating the heat dissipation.

[0038] The heat dissipation column 401 can be made of metal material, and part of the heat is dissipated in the interlayer cavity between the combiner inner shell 1 and the combiner outer shell 2. Some silica gel desiccant can be laid at the bottom of the interlayer cavity between the combiner inner shell 1 and the combiner outer shell 2. The water vapor molecules in the interlayer cavity between the combiner inner shell 1 and the combiner outer shell 2 move more actively when heated. At the same time, the microporous structure of the silica gel desiccant becomes more active when heated, which is conducive to the diffusion of water vapor molecules into the pores and being adsorbed, and has a drying effect on the water vapor invading the interlayer below the sealing component 5, further reducing the possibility of water vapor passing through the sealing component 5 and invading the interior of the combiner through the inner connection seam sealing component 3.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waterproof sealed combiner, characterized in that: The invention comprises a combiner inner shell, wherein the outer shell of the combiner is nested outside, and heat dissipation components are arranged at equal intervals in the interlayer between the inner shell of the combiner and the outer shell of the combiner, and the heat dissipation components are used to conduct the heat inside the inner shell of the combiner to the outside, and a sealing cover inner shell is arranged on the top of the inner shell of the combiner, and a sealing cover outer shell is arranged on the top of the outer shell of the combiner, and two sets of connection seam sealing components are respectively installed at the gap where the inner shell of the combiner and the sealing cover inner shell are connected, and at the gap where the outer shell of the combiner and the sealing cover outer shell are connected. The two groups of connection seam sealing components are staggered up and down, and are used to seal the gap between the combiner inner shell and the sealing cover inner shell and the gap between the combiner outer shell and the sealing cover outer shell respectively. The top of the combiner inner shell is higher than the combiner outer shell. The plugging component is installed. The plugging component is used to separate and seal the interlayer space where the two groups of connection seam sealing components are located. The interlayer part of the sealing cover inner shell and the sealing cover outer shell is filled with filling blocks, and the sealing cover inner shell is fixed together with the sealing cover outer shell through the filling blocks.

2. The waterproof sealed combiner according to claim 1, characterized in that: The connection seam sealing assembly includes an upper sealing strip mounting seat and a lower sealing strip mounting seat, and the upper sealing strip mounting seat and the lower sealing strip mounting seat are each provided with two groups, wherein one group of upper sealing strip mounting seats is fixedly connected to the bottom of the sealing cover outer shell, and its corresponding lower sealing strip mounting seat is fixedly connected to the top of the combiner outer shell, and the other group of upper sealing strip mounting seats is fixedly connected to the bottom of the sealing cover inner shell, and its corresponding lower sealing strip mounting seat is fixedly connected to the top of the combiner inner shell.

3. The waterproof sealed combiner according to claim 2, characterized in that: The cross-sectional shapes of the upper sealing strip mounting seat and the lower sealing strip mounting seat are both set to be arc-shaped, the inner wall of the upper sealing strip mounting seat is fixedly connected with an upper convex strip, and the inner wall of the lower sealing strip mounting seat is fixedly connected with a lower convex strip.

4. The waterproof sealed combiner according to claim 3, characterized in that: A sealing strip is arranged in the middle of the upper sealing strip mounting seat and the lower sealing strip mounting seat, and two groups of grooves are symmetrically arranged on the upper and lower sides of the sealing strip, one group of grooves is snap-connected to the outside of the upper convex strip, and the other group of grooves is snap-connected to the outside of the lower convex strip.

5. The waterproof sealed combiner according to claim 4, characterized in that: The side of the sealing strip is fixedly connected with an anti-slip limit strip, and two groups of the anti-slip limit strips are symmetrically arranged about the vertical center axis of the sealing strip, and the cross-sectional shape of the anti-slip limit strip is set to be T-shaped.

6. The waterproof sealed combiner according to claim 1, characterized in that: The blocking assembly comprises a spring leaf, which is arranged on the outer wall of the combiner inner shell, and the bottom end of the spring leaf is fixedly connected to the combiner inner shell, and the top end of the spring leaf is clearance-fitted to the combiner inner shell.

7. The waterproof sealed combiner according to claim 6, characterized in that: The top of the reed is tightly fitted with a pressing block, which is fixedly connected to the inner wall of the sealing cover shell. The reed moves downward with the sealing cover shell to squeeze the top of the reed and bend it outward.

8. The waterproof sealed combiner according to claim 6, characterized in that: The outer wall of the spring sheet is fixedly connected with a sealing rubber strip, the side of the sealing rubber strip is tightly fitted with a sealing rubber seat, and the sealing rubber seat is fixedly connected to the inner wall of the sealing cover shell.

9. The waterproof sealed combiner according to claim 1, characterized in that: The heat dissipation assembly includes a heat dissipation column, one end of the heat dissipation column is fixedly connected to the inner shell of the combiner, and the other end of the heat dissipation column is fixedly connected to the outer shell of the combiner, a guide port is coaxially arranged inside the heat dissipation column, and a connecting rod is fixedly connected to the end of the guide port, and the guide port is fixed to the heat dissipation column through the connecting rod.

10. The waterproof sealed combiner according to claim 9, characterized in that: The end of the guide port is rotatably connected with a guide plate, and six guide plates are arranged at equal angles with respect to the end of the guide port. The outer wall of the guide port is fixedly connected with a limit stopper, and the limit stopper is used to limit the rotation direction of the guide plate.

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