Flow guide plate with controllable flow speed

Abstract

The utility model provides a flow guide plate with controllable flow velocity, and relates to the technical field of flow guide equipment.The flow guide plate is characterized by comprising a box body, a first opening is formed in the top end of the box body, and a flow guide part is arranged on the upper surface, close to the first opening, of the box body; the height of the flow guide part is gradually reduced along the length direction of the box body along the direction away from the first opening; a containing cavity is formed in the lower portion, close to the first opening, of the box body, a second opening used for being connected with a water pump is formed in one side of the containing cavity, a throttling valve is connected between the second opening and the water pump, and the containing cavity is communicated with the first opening. The flow guide plate with the controllable flow speed has the beneficial effects that the stable flow speed is adjusted and generated, and strip-shaped raw materials are evenly conveyed.

Description

Technical Field

[0001] The present application relates to the technical field of flow guide equipment, and in particular to a flow guide plate with controllable flow rate. Background Art

[0002] In the production process, after the raw materials are cut and processed, they need to be transported to the dehydrator for dehydration in order to facilitate subsequent processing. In the process of conveying the raw materials to the dehydrator along with the water flow, due to the uneven water flow of the guide plate, it is difficult to maintain a steady and gentle flow rate in the flow space of the guide plate, which makes it easy for the strip-shaped raw materials to gather or drift apart during the water flow transportation.

[0003] Improvements are urgently needed to address the above issues. Utility Model Content

[0004] The purpose of the present application is to provide a flow guide plate with controllable flow rate, which has the advantages of regulating and generating a stable flow rate and achieving uniform transportation of strip-shaped raw materials.

[0005] The present application provides a flow guide plate with controllable flow rate, and the technical solution is as follows:

[0006] A box body is provided, wherein a first opening is formed at the top of the box body, and a guide portion is provided on the upper surface of the box body near the first opening, wherein the height of the guide portion gradually decreases along the length direction of the box body as it moves away from the first opening;

[0007] A accommodating cavity is arranged at the lower part of the box body close to the first opening, a second opening for connecting a water pump is arranged on one side of the accommodating cavity, and the accommodating cavity is communicated with the first opening.

[0008] The flow guide plate with controllable flow rate provided in the present application includes a box body, a first opening is opened at the top of the box body, the first opening is used for water outlet, and a guide part is arranged on the upper surface of the box body near the first opening, and the guide part is used to provide a flow platform for the water sent out from the first opening, so that the water flow is guided and plays a role in transporting raw materials. In order to make the flow of water more stable and uniform, the height of the guide part gradually decreases along the length direction of the box body as it moves away from the first opening. By setting the height of the guide part in this way, the gravity effect on the water flow at the initial position of the guide part is also stronger, so that the water flow has sufficient flow power at the initial position of the guide part, and can flow fully and evenly to the middle and rear part of the guide part, and as the height of the middle and rear part of the guide part gradually decreases The flow rate of the water flow located in the middle and rear part of the guide part gradually becomes stable and gentle, which plays a role in stably and evenly conveying the raw materials and prevents the raw materials from gathering, bunching or drifting away and dispersing. A accommodating chamber is provided at the lower part of the box body near the first opening, and a second opening for connecting a water pump is provided on one side of the accommodating chamber. A throttle valve is connected between the second opening and the water pump, and the accommodating chamber is communicated with the first opening. By controlling the water pump, water is injected into the accommodating chamber through the second opening, and then sent into the guide part through the first opening, thereby generating a stable and even water flow on the upper surface of the guide part, achieving a stable and even conveying effect on the raw materials, and by controlling the flow rate of the throttle valve, the water flow rate can be adjusted to generate a stable flow rate and evenly convey the strip-shaped raw materials.

[0009] Further, in the present application, the width of the first opening is the same as the width of the guide portion.

[0010] The flow rate controllable guide plate provided in the present application has a first opening whose width is the same as that of the guide portion, so that the width of the first opening is matched with that of the guide portion. When water flows into the guide portion from the first opening, the guide portion has sufficient space to receive and transport the water. Especially when the flow rate and velocity of the water flow increase, the guide portion still has sufficient space to receive and transport the water until the entire width of the guide portion is filled with water. Therefore, regardless of whether the water flow rate is large or small, a smooth and uniform water flow transport effect can be achieved, thereby achieving uniform and stable transport of raw materials.

[0011] Further, in the present application, the geometric slope of the upper surface of the guide portion gradually decreases in a direction away from the first opening.

[0012] The flow guide plate with controllable flow rate provided in the present application has an upper surface geometric slope of the guide portion that gradually decreases in the direction away from the first opening. Since the upper surface height of the guide portion is relatively high, the water flow entering the upper surface of the guide portion from the first opening will have a larger flow rate due to the strong effect of gravity, and the guide portion needs to control the water flow to a stable and uniform state. Therefore, by setting the upper surface geometric slope of the guide portion to gradually decrease in the direction away from the first opening, the slope of the upper surface of the guide portion becomes gradually gentler as it moves away from the first opening, and the water flow flowing through the upper surface of the guide portion also gradually becomes gentler and uniform, thereby achieving regulation and generating a stable flow rate and achieving uniform transportation of the strip-shaped raw materials.

[0013] Further, in the present application, a drainage tube is connected between the second opening and the first opening, and the volume of the drainage tube is smaller than the volume of the accommodating cavity.

[0014] The flow rate controllable guide plate provided in the present application has a drainage tube connected between the second opening and the first opening. The volume of the drainage tube is smaller than the volume of the accommodating chamber. The drainage tube is used to make the water supply more convenient and efficient. By reducing the water flow transfer space between the second opening and the first opening, the water flow supply efficiency is enhanced, so that the upper surface of the guide part is quickly filled with water, thereby adjusting and generating a smooth flow rate and achieving uniform transportation of the strip-shaped raw materials.

[0015] Further, in the present application, the width of the drainage tube near the first opening is the same as the width of the first opening.

[0016] Further, in the present application, the width of the drainage tube near the second opening is the same as the width of the second opening.

[0017] Furthermore, in the present application, the width of the drainage tube gradually increases toward the direction approaching the first opening.

[0018] Further, in the present application, the upper surface of the guide portion close to the first opening is an arc-shaped surface.

[0019] Furthermore, in the present application, the box body is symmetrically provided with enclosure plates on both sides of the guide portion along the length direction of the box body.

[0020] Further, in the present application, the height of the first opening is lower than the height of the top surface of the box body.

[0021] As can be seen from the above, the present application provides a flow-rate controllable guide plate, including a box body, a first opening is provided at the top of the box body, the first opening is used for water outlet, and a guide portion is provided on the upper surface of the box body near the first opening, and the guide portion is used to provide a flow platform for water sent out from the first opening, so that the water flow is guided and plays a role in transporting raw materials. In order to make the flow of water more stable and uniform, the height of the guide portion gradually decreases along the length direction of the box body as it moves away from the first opening. By setting the height of the guide portion in this way, the gravity effect on the water flow at the initial position of the guide portion is also stronger, so that the water flow has sufficient flow power at the initial position of the guide portion, and can flow fully and evenly to the middle and rear part of the guide portion, and as the height of the middle and rear part of the guide portion gradually decreases , the flow rate of the water flow located in the middle and rear part of the guide part gradually becomes stable and gentle, which plays a role in stably and evenly conveying the raw materials and prevents the raw materials from agglomerating or drifting away and dispersing. A accommodating chamber is arranged at the lower part of the box body near the first opening, and a second opening for connecting a water pump is arranged on one side of the accommodating chamber. A throttle valve is connected between the second opening and the water pump, and the accommodating chamber is communicated with the first opening. By controlling the water pump, water is injected into the accommodating chamber through the second opening, and then sent to the guide part through the first opening, thereby generating a stable and even water flow on the upper surface of the guide part, achieving a stable and even conveying effect on the raw materials, and by controlling the flow rate of the throttle valve, the water flow rate can be adjusted to generate a stable flow rate and evenly convey the strip-shaped raw materials; the width of the first opening The width of the first opening is the same as the width of the guide part, which is used to match the width of the first opening with the width of the guide part. When water flows into the guide part from the first opening, the guide part has sufficient space to receive and transport it. Especially when the flow rate and velocity of the water flow increases, the guide part still has sufficient space to receive and transport it until the entire width of the guide part is filled with water. Therefore, regardless of whether the water flow rate is large or small, a smooth and uniform water flow transport effect can be achieved, and uniform and stable transportation of raw materials can be achieved; the geometric slope of the upper surface of the guide part gradually decreases in the direction away from the first opening. Since the upper surface of the guide part is relatively high, the water flow entering the upper surface of the guide part from the first opening will have a larger flow rate due to the strong gravity, and the guide part needs to transfer the water flow Controlled to a smooth and uniform state, therefore, by setting the geometric slope of the upper surface of the guide part to gradually decrease in the direction away from the first opening, the slope of the upper surface of the guide part becomes gradually gentler as it moves away from the first opening, and the water flow passing through the upper surface of the guide part also gradually becomes gentler and uniform, thereby achieving regulation and generating a smooth flow rate, and achieving uniform transportation of the bar-shaped raw materials; a drainage tube is connected between the second opening and the first opening, and the volume of the drainage tube is smaller than the volume of the accommodating chamber, and the drainage tube is used to make the supply of water more convenient and efficient, and enhance the water supply efficiency by reducing the water flow transfer space between the second opening and the first opening, so that the upper surface of the guide part is quickly filled with water, thereby adjusting and generating a smooth flow rate, and achieving uniform transportation of the bar-shaped raw materials.

[0022] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by practicing the embodiments of the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a flow-rate controllable guide plate provided in this application.

[0024] Figure 2 A cross-sectional view of a flow-rate controllable guide plate provided in the present application.

[0025] In the figure: 1. box body; 101. first opening; 102. guide part; 103. accommodating cavity; 104. second opening; 2. drainage tube; 3. enclosure. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be clearly and completely described below in conjunction with the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] Please refer to Figure 1 to Figure 2 As shown, the present application provides a flow guide plate with controllable flow rate, including a box body 1, a first opening 101 is opened at the top of the box body 1, a guide portion 102 is arranged on the upper surface of the box body 1 near the first opening 101, and the height of the guide portion 102 gradually decreases along the length direction of the box body 1 as it moves away from the first opening 101; a accommodating chamber 103 is arranged at the lower part of the box body 1 near the first opening 101, a second opening 104 for connecting a water pump is arranged on one side of the accommodating chamber 103, and the accommodating chamber 103 is communicated with the first opening 101.

[0029] Specifically, in the production process, after the raw materials are cut and processed, they need to be transported to the dehydrator for dehydration in order to facilitate subsequent processing. In the process of transporting the raw materials to the dehydrator along with the water flow, due to the uneven water flow of the guide plate, it is difficult to maintain a steady and gentle flow rate in the flow space of the guide plate, which causes the strip-shaped raw materials to easily aggregate or drift apart during the water flow transportation process. Therefore, in order to solve the above problems, the flow guide plate with controllable flow rate provided in the present application includes a box body 1, a first opening 101 is opened at the top of the box body 1, the first opening 101 is used for water outlet, and a guide part 102 is arranged on the upper surface of the box body 1 near the first opening 101, and the guide part 102 is used to provide a flow platform for the water sent out from the first opening 101, so that the water flow is guided and plays a role in transporting raw materials. In order to make the flow of water more stable and uniform, the height of the guide part 102 gradually decreases along the length direction of the box body 1 as it moves away from the first opening 101. By setting the height of the guide part 102 in this way, the gravity effect on the water flow at the initial position of the guide part 102 is also stronger, so that the water flow has sufficient flow power at the initial position of the guide part 102, and can fully and evenly flow to the middle and rear part of the guide part 102, and as the middle and rear part of the guide part 102 The height of the water gradually decreases, and the flow rate of the water flow in the middle and rear part of the guide part 102 gradually becomes stable and gentle, which plays a role in stably and evenly conveying the raw materials and prevents the raw materials from gathering, piling up or drifting away and dispersing. A accommodating chamber 103 is provided at the lower part of the box body 1 near the first opening 101, and a second opening 104 for connecting a water pump is provided on one side of the accommodating chamber 103. A throttle valve is connected between the second opening 104 and the water pump, and the accommodating chamber 103 is communicated with the first opening 101. By controlling the water pump, water is injected into the accommodating chamber 103 through the second opening 104, and then sent into the guide part 102 through the first opening 101, so that a stable and even water flow is generated on the upper surface of the guide part 102, and a stable and even conveying effect is achieved for the raw materials. By controlling the flow rate of the throttle valve, the water flow rate is regulated, a stable flow rate is generated, and even conveying of the strip-shaped raw materials is achieved.

[0030] In some preferred embodiments, the width of the first opening 101 is the same as the width of the guide portion 102 .

[0031] Specifically, the width of the first opening 101 is the same as the width of the guide portion 102, which is used to match the width of the first opening 101 with the width of the guide portion 102. When water flows from the first opening 101 into the guide portion 102, the guide portion 102 has sufficient space to receive and transport the water. Especially when the flow rate and velocity of the water flow increase, the guide portion 102 still has sufficient space to receive and transport the water until the entire width of the guide portion 102 is filled with water. Therefore, regardless of whether the water flow rate is large or small, a smooth and uniform water flow transport effect can be achieved, thereby achieving uniform and stable transportation of raw materials.

[0032] In some preferred embodiments, the geometric slope of the upper surface of the guide portion 102 gradually decreases in a direction away from the first opening 101 .

[0033] Specifically, the geometric slope of the upper surface of the guide portion 102 gradually decreases in the direction away from the first opening 101. Since the upper surface height of the guide portion 102 is relatively high, the water flow entering the upper surface of the guide portion 102 from the first opening 101 will have a larger flow rate due to the strong effect of gravity, and the guide portion 102 needs to control the water flow to a stable and uniform state. Therefore, by setting the geometric slope of the upper surface of the guide portion 102 to gradually decrease in the direction away from the first opening 101, the slope of the upper surface of the guide portion 102 becomes gradually gentler as it moves away from the first opening 101, and the water flow flowing through the upper surface of the guide portion 102 also becomes gradually gentle and uniform, thereby achieving regulation and generating a stable flow rate and achieving uniform transportation of the strip-shaped raw materials.

[0034] In some preferred embodiments, a drainage tube 2 is connected between the second opening 104 and the first opening 101 , and the volume of the drainage tube 2 is smaller than the volume of the accommodating cavity 103 .

[0035] Specifically, a drainage tube 2 is connected between the second opening 104 and the first opening 101. The volume of the drainage tube 2 is smaller than the volume of the accommodating chamber 103. The drainage tube 2 is used to make the supply of water more convenient and efficient. By reducing the water flow transfer space between the second opening 104 and the first opening 101, the water flow supply efficiency is enhanced, so that the upper surface of the guide part 102 is quickly filled with water, thereby adjusting and generating a smooth flow rate and achieving uniform transportation of the strip-shaped raw materials.

[0036] In some preferred embodiments, the width of the drainage tube 2 near the first opening 101 is the same as the width of the first opening 101 .

[0037] Specifically, in order to ensure that the water flow in the drainage tube 2 can be supplied to the first opening 101 and the guide part 102 in time, and the first opening 101 can be quickly filled with water to avoid uneven water flow, in the present embodiment, the width of the drainage tube 2 near the first opening 101 is the same as the width of the first opening 101. When the drainage tube 2 is filled with water, the water flow of the drainage tube 2 near the first opening 101 can quickly match the width of the first opening 101, ensuring that the water flow at the first opening 101 is sufficient and uniform, which is beneficial for the guide part 102 to obtain sufficient and uniform water flow, thereby achieving uniform transportation of raw materials.

[0038] In some preferred embodiments, the width of the drainage tube 2 near the second opening 104 is the same as the width of the second opening 104 .

[0039] Specifically, in order to facilitate the drainage tube 2 to be quickly filled with water and to promptly and efficiently receive the water supplied from the second opening 104, in the present embodiment, the width of the drainage tube 2 near the second opening 104 is the same as the width of the second opening 104. When the water flows into the drainage tube 2 from the second opening 104, the part of the drainage tube 2 near the second opening 104 will be quickly filled with water, thereby realizing the rapid connection of the water flow between the second opening 104 and the drainage tube 2, facilitating the subsequent injection of uniform and sufficient water flow into the first opening 101 and the guide portion 102, and facilitating the uniform transportation of raw materials.

[0040] In some preferred embodiments, the width of the drainage tube 2 gradually increases toward the direction approaching the first opening 101 .

[0041] Specifically, in order to further facilitate the filling of the drainage tube 2 with water and enable the drainage tube 2 to have the ability to be quickly filled with water, in the present embodiment, the width of the drainage tube 2 gradually increases in the direction close to the first opening 101, and when the water from the second opening 104 begins to be injected into the drainage tube 2, the portion of the drainage tube 2 close to the second opening 104 will be quickly filled with water. As the water flow gradually increases, the portion of the drainage tube 2 close to the first opening 101 will also be filled with water, and the water from the drainage tube 2 close to the first opening 101 will also fully and evenly reach the first opening 101, and then fully and evenly enter the guide portion 102. The gradual structure of the drainage tube 2 accelerates the water injection process and ensures the sufficiency and uniformity of the water flow at the first opening 101. In addition, it also saves the space occupied by the drainage tube 2, leaving effective space. Without too much water flow, the drainage tube 2 can play a role in guiding and transitioning the water flow, which is beneficial to the subsequent uniform transportation of the raw materials by the guide portion 102.

[0042] In some preferred embodiments, the upper surface of the guide portion 102 close to the first opening 101 is an arc-shaped surface.

[0043] Specifically, in order to enable the water flow at the first opening 101 to flow smoothly and evenly into the guide portion 102, in the present embodiment, the upper surface of the guide portion 102 near the first opening 101 is an arc-shaped surface. By setting the upper surface of the guide portion 102 near the first opening 101 to be an arc-shaped surface, water can flow smoothly and naturally into the guide portion 102 through the first opening 101, so that the guide portion 102 obtains a smooth, sufficient and uniform water flow, thereby achieving uniform transportation of the raw materials.

[0044] In some preferred embodiments, enclosures 3 are symmetrically provided on both sides of the air guide portion 102 of the box body 1 along the length direction of the box body 1 .

[0045] Specifically, in order to prevent the water on the upper surface of the guide part 102 from overflowing to the outside when the water flow is too large, in the present embodiment, the box body 1 is symmetrically provided with enclosures 3 on both sides of the guide part 102 along the length direction of the box body 1. By providing the enclosures 3, effective limiting constraints are performed on both sides of the upper surface of the guide part 102, and the water flow is stably constrained on the upper surface of the guide part 102, thereby achieving smooth and uniform transportation of the raw materials and preventing the water on the upper surface of the guide part 102 from overflowing to the outside.

[0046] In some preferred embodiments, the height of the first opening 101 is lower than the top surface height of the box body 1 .

[0047] Specifically, in order to prevent the water flow at the first opening 101 from overflowing to the outside when the water flow is too large, in the present embodiment, the height of the first opening 101 is lower than the top surface height of the box body 1. Through the arrangement of the above-mentioned structure, the water flow at the first opening 101 is effectively contained and restrained, ensuring that the water flow at the first opening 101 is smoothly and evenly transported to the upper surface of the guide portion 102, while preventing the water flow at the first opening 101 from overflowing to the outside due to excessive water flow.

[0048] Through the above technical scheme, the flow guide plate with controllable flow rate provided by the present application includes a box body 1, a first opening 101 is opened at the top of the box body 1, the first opening 101 is used for water outlet, and a guide portion 102 is arranged on the upper surface of the box body 1 near the first opening 101, and the guide portion 102 is used to provide a flow platform for the water sent out of the first opening 101, so that the water flow is guided and plays a role in conveying raw materials. In order to make the flow of water more stable and uniform, the height of the guide portion 102 gradually decreases along the length direction of the box body 1 as it moves away from the first opening 101. By adjusting the guide portion 102 The height is set in this way, and the gravity effect on the water flow at the initial position of the guide part 102 is also stronger, so that the water flow has sufficient flow power at the initial position of the guide part 102, and can fully and evenly flow to the middle and rear part of the guide part 102. As the height of the middle and rear part of the guide part 102 gradually decreases, the flow rate of the water flow in the middle and rear part of the guide part 102 gradually becomes stable and moderate, which plays a role in stably and evenly conveying the raw materials and prevents the raw materials from agglomerating or drifting away. The lower part of the box body 1 near the first opening 101 is provided with a receiving chamber 103, and the receiving chamber A second opening 104 for connecting a water pump is provided on one side of 103, a throttle valve is connected between the second opening 104 and the water pump, the accommodating chamber 103 is communicated with the first opening 101, and water is injected into the accommodating chamber 103 through the second opening 104 by controlling the water pump, and then sent to the guide part 102 through the first opening 101, so that a smooth and uniform water flow is generated on the upper surface of the guide part 102, and a smooth and uniform conveying effect is achieved for the raw materials. By controlling the flow size of the throttle valve, the water flow rate is adjusted and a smooth flow rate is generated, and uniform conveying of the strip raw materials is achieved; the first opening The width of the first opening 101 is the same as the width of the guide portion 102, which is used to match the width of the first opening 101 with the width of the guide portion 102. When water flows from the first opening 101 into the guide portion 102, the guide portion 102 has sufficient space to receive and transport the water. In particular, when the flow rate and velocity of the water flow increase, the guide portion 102 still has sufficient space to receive and transport the water until the entire width of the guide portion 102 is filled with water. Therefore, no matter whether the water flow rate is large or small, a smooth and uniform water flow transport effect can be achieved, and the raw materials can be transported uniformly and stably.The geometric slope of the upper surface of the guide portion 102 gradually decreases in the direction away from the first opening 101. Since the upper surface of the guide portion 102 is relatively high, the water flow entering the upper surface of the guide portion 102 from the first opening 101 will have a relatively high flow rate due to the strong gravity effect, and the guide portion 102 needs to control the water flow to a stable and uniform state. Therefore, by setting the geometric slope of the upper surface of the guide portion 102 to gradually decrease in the direction away from the first opening 101, the slope of the upper surface of the guide portion 102 becomes gradually gentle as it moves away from the first opening 101, and the water flowing through the guide portion The water flow on the upper surface of 102 also gradually becomes gentle and uniform, thereby achieving regulation and generating a steady flow rate, and achieving uniform transportation of the strip-shaped raw materials; a drainage tube 2 is connected between the second opening 104 and the first opening 101, and the volume of the drainage tube 2 is smaller than the volume of the accommodating chamber 103. The drainage tube 2 is used to make the supply of water more convenient and efficient, and by reducing the water flow transfer space between the second opening 104 and the first opening 101, the water flow supply efficiency is enhanced, so that the upper surface of the guide part 102 is quickly filled with water, thereby regulating and generating a steady flow rate, and achieving uniform transportation of the strip-shaped raw materials. ;

[0049] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A flow guide plate with controllable flow rate, characterized in that: Comprising a box body (1), a first opening (101) is provided at the top of the box body (1), a flow guide portion (102) is provided on the upper surface of the box body (1) close to the first opening (101), and the height of the flow guide portion (102) gradually decreases along the length direction of the box body (1) as it moves away from the first opening (101); A accommodating chamber (103) is provided at the lower part of the box body (1) close to the first opening (101); a second opening (104) for connecting to a water pump is provided on one side of the accommodating chamber (103); a throttle valve is connected between the second opening (104) and the water pump; and the accommodating chamber (103) is in communication with the first opening (101).

2. The flow velocity controllable guide plate according to claim 1, characterized in that: The width of the first opening (101) is the same as the width of the guide portion (102).

3. The flow velocity controllable guide plate according to claim 2, characterized in that: The geometric slope of the upper surface of the guide portion (102) gradually decreases in a direction away from the first opening (101).

4. The flow velocity controllable guide plate according to claim 1, characterized in that: A drainage tube (2) is connected between the second opening (104) and the first opening (101), and the volume of the drainage tube (2) is smaller than the volume of the accommodating cavity (103).

5. The flow velocity controllable guide plate according to claim 4, characterized in that: The width of the drainage tube (2) close to the first opening (101) is the same as the width of the first opening (101).

6. The flow velocity controllable guide plate according to claim 4, characterized in that: The width of the drainage tube (2) near the second opening (104) is the same as the width of the second opening (104).

7. The flow velocity controllable guide plate according to claim 4, characterized in that: The width of the drainage tube (2) gradually increases towards the direction approaching the first opening (101).

8. The flow velocity controllable guide plate according to claim 1, characterized in that: The upper surface of the guide portion (102) close to the first opening (101) is an arc-shaped surface.

9. The flow velocity controllable guide plate according to claim 1, characterized in that: The box body (1) is symmetrically provided with enclosure plates (3) on both sides of the guide portion (102) along the length direction of the box body (1).

10. The flow velocity controllable guide plate according to claim 1, characterized in that: The height of the first opening (101) is lower than the height of the top surface of the box body (1).

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