Automatic drinking bowl for poultry

Abstract

The utility model discloses an automatic drinking bowl for poultry, which belongs to the technical field of drinking bowls and comprises a main body, a water control assembly and a water outlet pipe. The shell comprises a sleeve part, a hemispherical shell and a water trough; a plurality of drinking ports are formed in the periphery of the transparent cover; the supporting piece comprises a supporting ring and a plurality of brackets; the transparent cover doors are in one-to-one correspondence with the drinking ports, and the top ends are hinged to the supporting ring; the elastic elements are arranged between the transparent cover door and the supporting ring in a one-to-one correspondence mode. By arranging the transparent cover, the drinking trough can be protected in a covering mode, so that the situation that sundries fall into the drinking trough to pollute drinking water is avoided, it is guaranteed that poultry can normally observe the drinking water by means of the transparent design of the transparent cover, the transparent cover door is pushed through the elastic element to seal the drinking opening in the normal state, and the drinking trough is protected. The protection effect is guaranteed, water drinking of the poultry is prevented from being blocked, and the actual application effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drinking fountains, in particular to an automatic drinking fountain for poultry. Background Art

[0002] The Plasson automatic waterer is a water supply device used in automated poultry farms such as broiler chickens. Usually, after the water level of the installed automatic waterer is adjusted, as long as there is water in the pipe and it is not blocked, the water level in the automatic waterer will remain constant, so there is no need to add drinking water manually, which not only saves the labor cost of adding and changing water manually, but also ensures that every chicken in the chicken house can drink water freely.

[0003] However, the drinking trough of the current automatic drinking fountain is open, resulting in dust, feathers, dandruff and other debris falling into the drinking trough during actual use, thereby contaminating the drinking water, which in turn causes diarrhea, loss of appetite, and even disease and death in poultry. Utility Model Content

[0004] The utility model aims to provide an automatic drinking fountain for poultry, which solves the technical problem that the drinking trough of the automatic drinking fountain in the prior art is prone to fall into debris, resulting in the pollution of drinking water.

[0005] The utility model discloses an automatic drinking fountain for poultry, comprising:

[0006] The main body includes a water control assembly and a water outlet pipe, wherein the water outlet pipe is arranged on the side of the water control assembly;

[0007] The shell includes a sleeve portion, a hemispherical shell and a drinking trough; the sleeve portion is arranged at the center of the top of the hemispherical shell and is sleeved on the lower part of the water control assembly; the drinking trough is an annular structure and is arranged on the outer periphery of the bottom of the hemispherical shell;

[0008] A transparent cover is sleeved on the sleeve portion and covers the water outlet pipe, the hemispherical shell and the water trough, and a plurality of water drinking openings are arranged at intervals in a ring shape on the outer circumference;

[0009] The support member includes a support ring and a plurality of brackets; the outer periphery of the support ring is in contact with the inner periphery of the transparent cover and is located above the drinking port; the brackets are arranged on the support ring and connected to the outer side of the hemispherical shell;

[0010] A plurality of transparent cover doors, corresponding to the drinking openings one by one, and the top ends of the doors are hinged to the support ring;

[0011] A plurality of elastic elements are arranged one by one between the transparent cover door and the support ring, and are used to make the transparent cover door close the drinking opening under normal conditions.

[0012] The present application provides a transparent cover to cover the drinking trough, thereby preventing debris from falling into it and causing the drinking water to be contaminated. The transparent design is used to ensure that the poultry can observe the drinking water normally. Under normal circumstances, the transparent cover door is pushed by the elastic element to close the drinking port, which not only ensures the protection effect, but also avoids blocking the poultry from drinking water, thereby improving the actual application effect.

[0013] On the basis of the above technical solution, the solution of this application can also be improved as follows:

[0014] Preferably, a connecting structure is provided between the transparent cover door and the supporting ring;

[0015] The connection structure comprises:

[0016] Pin, horizontally arranged;

[0017] Two first support plates are movably sleeved on the pin shaft and connected to the transparent cover door;

[0018] Two second support plates are movably sleeved on the pin shaft and connected to the support ring;

[0019] The elastic element is a torsion spring, which is movably sleeved on the pin shaft and located between the two first support plates and the two second support plates, with one end abutting against the transparent cover door and the other end abutting against the support ring. By adopting this solution, the connection stability and structural compactness between the support ring and the transparent cover door are improved, the service life is extended, and production and assembly are facilitated.

[0020] Preferably, a hook-shaped groove is provided on the sleeve portion, and the hook-shaped groove is used to enable the sleeve portion to be hooked on the water outlet pipe; by adopting this solution, the hemispherical shell can be stably installed on the water control assembly, which is convenient for disassembly and assembly, and improves the compactness of the structure.

[0021] Preferably, a sleeve is provided at the center of the top of the transparent cover, and the sleeve is threadedly connected to the sleeve portion; adopting this solution, the transparent cover can be stably mounted on the sleeve portion, and has the advantages of convenient disassembly and assembly, compact structure and stable connection, and is convenient for practical use.

[0022] Preferably, a plurality of limit blocks abutting against the sleeve are provided on the outer periphery of the sleeve portion; this solution is used to axially limit the sleeve portion, thereby ensuring that the sleeve is in a suitable position after tightening, which facilitates assembly and improves installation efficiency.

[0023] Preferably, the bracket includes a support bar and a plurality of connecting rods; the support bar is detachably connected to the hemispherical shell; a plurality of connecting rods are spaced between the support bar and the support ring; the adoption of this solution facilitates disassembly and maintenance, improves structural strength, and ensures the stability of the overall structure.

[0024] Preferably, the support bar is in a fan-ring structure, and is used to fit with the hemispherical shell; adopting this solution increases the contact area and ensures a stable connection.

[0025] Preferably, the hemispherical shell is provided with a plurality of locking blocks, and a slot adapted to the support bar is formed between the locking blocks and the hemispherical shell;

[0026] The number of groups of the locking blocks corresponds one to one with the connecting rods, and each group of the locking blocks has two locking blocks, which abut against the two sides of the corresponding connecting rods for circumferential limiting. By adopting this solution, the bracket can be firmly connected to the hemispherical shell and plays a positioning role, thereby improving assembly efficiency and facilitating practical application.

[0027] Preferably, the main body also includes a vertical rod and a hollow balancing device, one end of the vertical rod is connected to the water control assembly, and the other end is connected to the hollow balancing device, and the hollow balancing device is arranged in the hemispherical shell; the hollow balancing device is filled with weighting materials, and the center of gravity is located on the same vertical line as the water control assembly and the vertical rod; by adopting this solution, the overall weight is increased, so that the waterer can be more stable when suspended, and the situation where the waterer is caused to sway by a breeze is avoided.

[0028] Through the above technical solution, the utility model achieves the following beneficial effects:

[0029] 1. The present application provides a transparent cover to protect the drinking trough, thereby preventing debris from falling into it and causing the drinking water to be contaminated. The transparent design ensures that the poultry can observe the drinking water normally. Under normal circumstances, the transparent cover door is pushed by the elastic element to close the drinking port, which not only ensures the protection effect, but also avoids blocking the poultry from drinking water, thereby improving the practical application effect.

[0030] 2. The present application provides a sleeve threadedly connected to the sleeve portion, so that the transparent cover can be firmly installed on the sleeve portion, and has the advantages of convenient disassembly and assembly, compact structure and stable connection, which is convenient for practical use, and the sleeve portion is axially limited by a limit block to ensure that the sleeve is in the appropriate position after tightening, which facilitates assembly and improves installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 It is a front cross-sectional view of the automatic poultry drinking fountain according to a specific embodiment of the utility model;

[0033] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0034] Figure 3 for Figure 1 A side cross-sectional view of the automatic poultry drinker shown;

[0035] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0036] Figure 5 for Figure 1 The schematic diagram of the structure of the transparent cover in the poultry automatic drinking fountain shown;

[0037] Figure 6 for Figure 1 The schematic diagram of the structure of the shell in the poultry automatic drinking fountain shown;

[0038] Figure 7 for Figure 1 The structural schematic diagram of the support member in the automatic poultry drinking fountain shown;

[0039] Figure 8 for Figure 1 The schematic diagram of the structure of the poultry automatic waterer when it is turned on;

[0040] Description of reference numerals:

[0041] 1. Main body; 2. Shell; 3. Transparent cover; 4. Support member; 5. Transparent cover door; 6. Elastic element; 7. Connection structure;

[0042] 11. water control assembly; 12. water outlet pipe; 13. vertical rod; 14. hollow balancing device; 21. sleeve; 22. hemispherical shell; 23. drinking trough; 31. drinking port; 32. sleeve; 41. support ring; 42. bracket; 71. pin; 72. first support plate; 73. second support plate;

[0043] 211, hook-shaped groove; 212, limiting block; 421, supporting bar; 422, connecting rod; 221, locking block; 222, card slot. DETAILED DESCRIPTION

[0044] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0045] First of all, it should be noted that in the following description, some directional words involved in order to clearly illustrate the technical solution of the utility model, such as "top", "bottom", etc., all have meanings by analogy with the normal directions of the components in the automatic poultry waterer. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features.

[0047] In this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0048] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0049] Example:

[0050] like Figure 1 As shown, an embodiment of the present application discloses an automatic poultry drinking fountain, which is used to automatically supply drinking water in the automated breeding of poultry such as broilers. It can prevent debris from falling into the drinking trough 23 and improve the cleanliness of drinking water. Its specific structure includes: a main body 1, a shell 2, a transparent cover 3, a support 4, a plurality of transparent cover doors 5 and a plurality of elastic elements 6.

[0051] The main body 1 includes a water control assembly 11 and a water outlet pipe 12, and the water outlet pipe 12 is arranged on the side of the water control assembly 11; the water outlet pipe 12 is preferably set in two and symmetrically arranged on both sides of the water control assembly 11 to improve the structural stability, but it can also be more, without specific limitation.

[0052] It should be noted that the Prasong automatic drinking fountain belongs to the prior art, and the specific structure and working principle of the main body 1 are common knowledge, so they will not be described in detail in this application.

[0053] The housing 2 includes a sleeve portion 21, a hemispherical shell 22 and a drinking trough 23; the sleeve portion 21 is arranged at the top center of the hemispherical shell 22 and is sleeved on the lower part of the water control assembly 11; the drinking trough 23 is an annular structure and is arranged at the bottom periphery of the hemispherical shell 22. The housing 2 is preferably an integrally formed part, which is convenient for production and assembly and reduces manufacturing costs.

[0054] The transparent cover 3 is sleeved on the sleeve portion 21 and covers the water outlet pipe 12, the hemispherical shell 22 and the drinking trough 23, and has a plurality of drinking ports 31 distributed in an annular manner at intervals on the outer periphery; the transparent cover 3 is a hollow hemispherical structure and can be made of transparent plastic or other materials. The drinking ports 31 are preferably an isosceles trapezoidal structure ( Figure 5 The water trough 23 is only partially shown and not fully shown), arranged side by side and located beside the water trough 23, so as to facilitate the poultry to drink water.

[0055] The support member 4 includes a support ring 41 and a plurality of brackets 42; the outer periphery of the support ring 41 fits with the inner periphery of the transparent cover 3 and is located above the drinking port 31; the brackets 42 are arranged on the support ring 41 and connected to the outer side of the hemispherical shell 22; the support ring 41 can provide internal support for the transparent cover 3, thereby improving the stability and structural strength of the transparent cover 3; the brackets 42 are used to support and fix the support ring 41.

[0056] A plurality of transparent cover doors 5 correspond to the water ports 31 one by one, and the top ends are hinged to the support ring 41; the transparent cover doors 5 have the same shape as the water ports 31, but are slightly larger in size, thereby ensuring that the water ports 31 are fully closed and improving the protection effect.

[0057] A plurality of elastic elements 6 are disposed one by one between the transparent cover door 5 and the support ring 41 , and are used to enable the transparent cover door 5 to close the drinking opening 31 under normal conditions.

[0058] Under normal conditions, the transparent cover door 5 keeps the drinking opening 31 closed under the action of the elastic element 6, so that the transparent cover 3 remains a complete hollow hemispherical structure, thereby providing a shrouding protection for the water outlet pipe 12, the hemispherical shell 22 and the drinking trough 23, preventing dust, feathers, dandruff and other debris from falling into the drinking trough 23 and causing pollution to the drinking water.

[0059] When the poultry needs drinking water, it can see the drinking water in the drinking trough 23 through the transparent cover 3 and the transparent cover door 5, so it pushes the transparent cover door 5 open with its head. Figure 8As shown, the drinking opening 31 can be extended into the transparent cover 3 to drink water; after drinking, the poultry leaves, and the transparent cover door 5 will re-close the drinking opening 31 under the action of the elastic element 6.

[0060] The utility model provides a transparent cover 3 to cover the drinking trough 23, thereby preventing debris from falling into it and causing the drinking water to be contaminated. The transparent design ensures that the poultry can observe the drinking water normally. Under normal circumstances, the transparent cover door 5 is pushed by the elastic element 6 to close the drinking port 31, which can ensure the protection effect and avoid blocking the poultry from drinking water, thereby improving the actual application effect.

[0061] In some embodiments, Figure 2 As shown, in order to improve the connection stability and structural compactness, a connection structure 7 is provided between the transparent cover door 5 and the support ring 41 .

[0062] Specifically, the connection structure 7 includes a pin shaft 71, two first support plates 72 and two second support plates 73. The pin shaft 71 is arranged horizontally; the two first support plates 72 are movably sleeved on the pin shaft 71 and connected to the transparent cover door 5; the two second support plates 73 are movably sleeved on the pin shaft 71 and connected to the support ring 41.

[0063] Preferably, the first support plate 72 is arranged at the top of the transparent cover door 5, and the second support plate 73 is arranged at the bottom of the support ring 41, and both are integrally formed; this can improve the compactness of the structure, facilitate production and assembly, and improve production efficiency.

[0064] Correspondingly, the elastic element 6 is a torsion spring, which is movably mounted on the pin 71 and located between the two first support plates 72 and the two second support plates 73 , with one end abutting against the transparent cover door 5 and the other end abutting against the support ring 41 .

[0065] Through the above structural design, the connection stability and structural compactness between the support ring 41 and the transparent cover door 5 are improved, the service life is prolonged, and production and assembly are facilitated.

[0066] In some embodiments, Figure 1 A hook-shaped groove 211 is provided on the sleeve portion 21 , and the hook-shaped groove 211 is used to enable the sleeve portion 21 to be hooked on the water outlet pipe 12 .

[0067] By providing the hook-shaped groove 211 , the hemispherical shell 22 can be stably installed on the water control assembly 11 , which is convenient for assembly and disassembly and improves the compactness of the structure.

[0068] Based on the above embodiments, Figure 1 and Figure 3 As shown, a sleeve 32 is provided at the center of the top of the transparent cover 3 , and the sleeve 32 is threadedly connected to the sleeve portion 21 .

[0069] Specifically, the inner circumference of the sleeve 32 is provided with an internal thread, and the upper portion of the outer circumference of the sleeve portion 21 is provided with an external thread, thereby realizing a threaded connection between the two.

[0070] Through the above arrangement, the transparent cover 3 can be stably mounted on the sleeve portion 21 , and has the advantages of convenient assembly and disassembly, compact structure, and stable connection, and is convenient for practical use.

[0071] Based on the above embodiments, Figure 3 As shown, a plurality of limit blocks 212 abutting against the sleeve 32 are provided on the outer periphery of the sleeve portion 21 .

[0072] The limiting block 212 is used to limit the axial position of the sleeve portion 21, so as to ensure that the sleeve 32 is in a suitable position after being tightened, which facilitates assembly and improves installation efficiency.

[0073] In some embodiments, Figure 7 As shown, the bracket 42 includes a support bar 421 and a plurality of connecting rods 422 ; the support bar 421 is detachably connected to the hemispherical shell 22 ; and the plurality of connecting rods 422 are spaced apart between the support bar 421 and the support ring 41 .

[0074] Specifically, the support bar 421 and the hemispherical shell 22 can be detachably connected by means of bolts, snaps, etc., so as to facilitate disassembly and maintenance; multiple connecting rods 422 are used for connection, and the structural strength is improved, ensuring the stability of the overall structure.

[0075] In this embodiment, if Figure 7 As shown, the support bar 421 is in a fan-shaped structure, which is used to fit with the hemispherical shell 22, thereby increasing the contact area and ensuring a stable connection.

[0076] In this embodiment, if Figure 4 , Figure 6 and Figure 7 As shown, a plurality of locking blocks 221 are disposed on the hemispherical shell 22 , and a slot 222 adapted to the supporting bar 421 is formed between the locking blocks 221 and the hemispherical shell 22 .

[0077] Through the above arrangement, the support bar 421 can be hooked in the card slot 222, which is convenient for installation and improves the efficiency of assembly and disassembly.

[0078] Specifically, the number of groups of locking blocks 221 corresponds to the connecting rods 422 one by one, and each group of locking blocks 221 has two locking blocks, which abut against both sides of the corresponding connecting rods 422 for circumferential limiting.

[0079] Exemplarily, three connecting rods 422 are provided, and thus the locking blocks 221 are correspondingly provided in three groups; but the number is not limited thereto, and may be less or more, without specific limitation.

[0080] Through the above arrangement, the bracket 42 can be stably connected to the hemispherical shell 22 and plays a positioning role, thereby improving assembly efficiency and facilitating practical application.

[0081] In some embodiments, Figure 1 As shown, the main body 1 also includes a vertical rod 13 and a hollow balancing device 14. One end of the vertical rod 13 is connected to the water control assembly 11, and the other end is connected to the hollow balancing device 14. The hollow balancing device 14 is arranged in the hemispherical shell 22; the hollow balancing device 14 is filled with weighting materials, and the center of gravity is located on the same vertical line as the water control assembly 11 and the vertical rod 13.

[0082] Preferably, the bottom surface of the hollow balancing device 14 and the bottom surface of the hemispherical shell 22 are located in the same horizontal plane, so that the center of gravity of the drinking fountain is moved downward, thereby increasing stability.

[0083] Through the above arrangement, the overall weight of the drinking fountain is increased, so that the drinking fountain can be more stable when hung, and the situation in which the drinking fountain is swayed by a breeze is avoided.

[0084] In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. An automatic drinking fountain for poultry, characterized in that: include: The main body (1) comprises a water control assembly (11) and a water outlet pipe (12), wherein the water outlet pipe (12) is arranged on a side of the water control assembly (11); The housing (2) comprises a sleeve portion (21), a hemispherical shell (22) and a drinking trough (23); the sleeve portion (21) is arranged at the top center of the hemispherical shell (22) and is sleeved on the lower part of the water control assembly (11); the drinking trough (23) is an annular structure and is arranged on the outer periphery of the bottom of the hemispherical shell (22); A transparent cover (3) is sleeved on the sleeve portion (21) and covers the water outlet pipe (12), the hemispherical shell (22) and the water trough (23), and is provided with a plurality of water drinking openings (31) spaced apart in an annular pattern on the outer periphery; A support member (4) comprising a support ring (41) and a plurality of brackets (42); the outer periphery of the support ring (41) is in contact with the inner periphery of the transparent cover (3) and is located above the drinking opening (31); the brackets (42) are arranged on the support ring (41) and are connected to the outer side of the hemispherical shell (22); A plurality of transparent cover doors (5), corresponding one to one with the drinking openings (31), and having top ends hinged to the support ring (41); A plurality of elastic elements (6) are disposed one by one between the transparent cover door (5) and the support ring (41), and are used to enable the transparent cover door (5) to close the drinking opening (31) under normal conditions.

2. The automatic poultry drinking fountain according to claim 1, characterized in that: A connecting structure (7) is provided between the transparent cover door (5) and the support ring (41); The connection structure (7) comprises: A pin (71) is arranged transversely; Two first support plates (72) are movably sleeved on the pin shaft (71) and connected to the transparent cover door (5); Two second support plates (73) are movably sleeved on the pin shaft (71) and connected to the support ring (41); The elastic element (6) is a torsion spring, which is movably sleeved on the pin shaft (71) and located between the two first support plates (72) and the two second support plates (73), with one end abutting against the transparent cover door (5) and the other end abutting against the support ring (41).

3. The automatic poultry drinking fountain according to claim 1, characterized in that: The sleeve portion (21) is provided with a hook-shaped groove (211), and the hook-shaped groove (211) is used to enable the sleeve portion (21) to be hooked on the water outlet pipe (12).

4. The automatic poultry drinking fountain according to claim 3, characterized in that: A sleeve (32) is provided at the centre of the top of the transparent cover (3), and the sleeve (32) is threadedly connected to the sleeve portion (21).

5. The automatic poultry drinking fountain according to claim 4, characterized in that: The outer periphery of the sleeve portion (21) is provided with a plurality of limit blocks (212) that abut against the sleeve (32).

6. The automatic poultry drinking fountain according to claim 1, characterized in that: The bracket (42) comprises a support bar (421) and a plurality of connecting rods (422); the support bar (421) is detachably connected to the hemispherical shell (22); and the plurality of connecting rods (422) are arranged at intervals between the support bar (421) and the support ring (41).

7. The automatic poultry drinking fountain according to claim 6, characterized in that: The support bar (421) is in a fan-shaped structure and is used to fit with the hemispherical shell (22).

8. The automatic poultry drinking fountain according to claim 6, characterized in that: The hemispherical shell (22) is provided with a plurality of groups of locking blocks (221), and a locking groove (222) adapted to the support bar (421) is formed between the locking blocks (221) and the hemispherical shell (22); The number of groups of the locking blocks (221) corresponds to the number of the connecting rods (422) one by one, and each group of the locking blocks (221) is two in number, and abuts against two sides of the corresponding connecting rod (422) for circumferential limiting.

9. The automatic poultry drinking fountain according to claim 1, characterized in that: The main body (1) further comprises a vertical rod (13) and a hollow balancing device (14); one end of the vertical rod (13) is connected to the water control assembly (11), and the other end is connected to the hollow balancing device (14); the hollow balancing device (14) is arranged in the hemispherical shell (22); the hollow balancing device (14) is filled with weighting material, and the center of gravity is located on the same vertical line as the water control assembly (11) and the vertical rod (13).

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