Buried spray head

Abstract

The invention discloses a buried spray head which comprises a first stretching piece, a second stretching piece and a third stretching piece, positioning columns are arranged at the two ends of the first stretching piece, a positioning sleeve is arranged on the outer side of one positioning column, two inserting holes are formed in the positioning sleeve in a penetrating mode, and the two ends of the positioning columns are connected with the inserting holes in an inserted mode; the first movable pipe is arranged around the first stretching piece, the outer side of the first movable pipe is sleeved with a second movable pipe, and the outer side of the second movable pipe is sleeved with a sleeve seat pipe; the second stretching piece is arranged around the sleeve seat tube; and the soil scraping sleeve seat is connected with the outer wall of the sleeve seat pipe in a sleeving manner and is arranged at the top of the second stretching piece. According to the device, automatic stretching and resetting after irrigation is stopped can be achieved, the resetting speed is high and uniform stress in the whole resetting process is ensured through the arrangement of internal and external dual elastic stretching and resetting, soil possibly existing on the outer wall of the sleeve seat pipe in the ascending and descending processes can be scraped through the arrangement of the soil scraping sleeve seat, and the soil scraping effect is good. The soil is prevented from being conveyed into the nozzle along with the water body to block the nozzle and affect the service life.

Description

Technical Field

[0001] The invention relates to the technical field of irrigation equipment, in particular to a buried sprinkler. Background Art

[0002] The buried sprinkler is a sprinkler that is directly buried underground. It is a sprinkler that is hidden below the ground during non-sprinkling periods. It is mostly used for green space irrigation and irrigation of some cash crops. It has a long service life and does not affect ground field operations. All sprinklers are buried underground. During irrigation, under the action of water pressure, the sprinkler extends to the ground or above the crop surface for spraying irrigation: after irrigation is completed, due to the lack of water pressure support, it retracts below the ground under the action of gravity, and the irrigation equipment is well concealed.

[0003] The existing buried sprinkler heads can be lifted up to spray water during irrigation, but sometimes the lifted pipes are tilted under the influence of water flow, and are easily stuck and cannot be reset, so they are exposed for a long time and are easily damaged. In addition, most of the buried sprinkler heads are buried underground. During the irrigation and water transportation process, soil is easily mixed in the pipes. After the soil accumulates in the sprinkler head, it is easy to cause blockage, affecting the operation of the sprinkler head. Summary of the invention

[0004] The present invention provides an underground sprinkler head, which can realize automatic stretching and resetting after stopping irrigation. The double elastic stretching and resetting of the inside and the outside has a fast resetting speed and ensures uniform force during the overall resetting process. In addition, the scraping sleeve can cut and scrape away the soil that may exist on the outer wall of the sleeve pipe during the raising and lowering process, so as to avoid the soil being transported into the sprinkler head with the water body, causing blockage of the sprinkler head and affecting the service life.

[0005] In order to solve the above technical problems, the present invention provides an underground sprinkler, comprising:

[0006] The first stretching member has positioning columns at both ends, a positioning sleeve is provided on the outer side of one positioning column, the positioning sleeve is penetrated by two insertion holes, and the two ends of the positioning column are plugged into the insertion holes;

[0007] A first movable tube is arranged around the first stretching member, a second movable tube is sleeved on the outer side of the first movable tube, and a sleeve seat tube is sleeved on the outer side of the second movable tube;

[0008] A second stretching member is disposed around the sleeve tube;

[0009] A soil scraping sleeve, which is sleeved with the outer wall of the sleeve tube and is arranged on the top of the second stretching member;

[0010] A positioning seat is arranged at the bottom of the sleeve tube. The number of the positioning seats is set to two and they are symmetrically arranged. A slot is provided inside the positioning seat. One end of the first stretching member extends into the positioning seat, and the other positioning column is arranged inside the slot.

[0011] As a preferred embodiment of the above technical solution, the first stretching member is configured as a tension spring, the second stretching member is configured as a spring, rings are fixedly provided at both ends of the first stretching member, the positioning column is sleeved with the rings, and the first stretching member, the positioning column, the rings and the second stretching member are all made of stainless steel.

[0012] As a preferred embodiment of the above technical solution, a first connecting sleeve is provided at one end of the top of the positioning sleeve, a threaded connector is fixedly provided at the top of the first connecting sleeve, one end of the top of the first movable tube is fixedly connected to the bottom surface of the positioning sleeve, and the inner diameter and outer diameter lengths are set to be the same.

[0013] As a preferred embodiment of the above technical solution, one end of the top of the second stretching member is fixedly arranged on the bottom surface of the scraper sleeve seat, and one end of the bottom of the second stretching member is fixedly arranged on the top surface of the positioning seat.

[0014] As a preferred embodiment of the above technical solution, a groove is arranged around the outer wall of the scraper sleeve, and an elastic ring is matched inside the groove. A sealing convex seat is fixed on the top of the scraper sleeve, and the sealing convex seat is arranged around the sleeve tube.

[0015] As a preferred embodiment of the above technical solution, the two positioning seats are both semi-cylindrical in shape and are fitted together to form a cylindrical shape, the slots of the two positioning seats are fitted together to form an accommodating cavity, the two ends of the positioning column are fixedly arranged inside the two accommodating cavities, a second connecting sleeve is fixedly arranged on the top of the positioning seat, a connecting sealing disk is sleeved on the outside of the second connecting sleeve, the sleeve seat tube is arranged on the top of the connecting sealing disk and is arranged around the second connecting sleeve, and the second movable tube is arranged on the top of the second connecting sleeve.

[0016] As a preferred embodiment of the above technical solution, a protective sleeve is sleeved on the outer side of the positioning seat, a positioning cavity is provided on the inner wall of the protective sleeve and the two positioning seats are matched with the positioning cavity, a locking head is matched on the outer wall of the protective sleeve, the scraping sleeve is arranged inside the locking head, the sealing convex seat is arranged on the inner wall of the locking head and the diameter of the outer wall of the sleeve tube and extends to the top of the locking head, a locking sleeve is provided on the top of the locking head, a fixed seat is provided on the top of the locking sleeve, a sealing ring is provided around the top of the fixed seat, a limiting ring is fixedly provided on the locking sleeve and the inner wall of the fixed seat, a second movable tube is sleeved inside the limiting ring, a groove ring is provided on the bottom end surface of the second movable tube, and the limiting ring is made of elastic material and matches the groove ring.

[0017] As a preferred embodiment of the above technical solution, a nozzle is matched with the top of the threaded connector, a plurality of spray holes are arranged at one end of the top of the nozzle, a water spray chamber is connected to the bottom of the nozzle, a sealing gasket is arranged between the nozzle and the water spray chamber, a third connecting sleeve is fixedly arranged at the bottom of the water spray chamber, and an inner wall of the third connecting sleeve is provided with an internal thread and matches the threaded connector.

[0018] As a preferred embodiment of the above technical solution, a three-way water pipe is threadedly connected to one end of the bottom of the protective sleeve, and a positioning sleeve is provided around the inner wall of the three-way water pipe near one end of the protective sleeve. A mounting groove is provided on the top surface of the positioning sleeve, and two positioning seats are arranged inside the mounting groove, and the inner diameter length of the positioning sleeve is smaller than the inner diameter length of the positioning seat.

[0019] The present invention provides an underground sprinkler, which comprises a first stretching member, a second stretching member, a first movable tube, a second movable tube, a sleeve tube and a soil scraping sleeve. The whole body is fed with water from a three-way water pipe at the bottom and transported to the inside of the positioning seat, and gradually leads to the inside of the sleeve tube. In the process of the water level gradually rising in the sleeve tube, the sleeve tube is pushed to gradually rise and extend out of the protective sleeve. The second movable tube and the first movable tube inside the sleeve tube will also gradually slide upward and rise under the drive of water pressure until the water is transported to the water spraying chamber of the sprinkler, and then the water is sprayed out through the spray hole to realize irrigation operation. After the water transportation is completed, The first stretching member pulls the first movable tube downward inside the first movable tube to reset, and the second stretching member pulls the sleeve tube downward outside the sleeve tube to reset, and at the same time can drive the second movable tube to gradually move downward, so as to realize automatic stretching and reset after stopping irrigation. The double elastic stretching and reset setting of the inside and the outside has a fast reset speed and ensures uniform force during the overall reset process. In addition, the scraping sleeve can cut and scrape away the soil that may exist on the outer wall of the sleeve tube during the rising and falling process, so as to avoid the soil being transported into the sprinkler head with the water body, causing the sprinkler head to be blocked and affecting the service life.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is an overall side sectional view of the present invention;

[0024] Figure 4 It is a schematic diagram of the positions of the second drawing member and the sleeve seat tube of the present invention;

[0025] Figure 5 It is a schematic diagram of the positions of the first stretching member and the scraper sleeve seat of the present invention;

[0026] Figure 6 It is a schematic diagram of the connection of the two ends of the first tensile member of the present invention;

[0027] Figure 7 It is a schematic diagram of the positioning seat structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the nozzle structure of the present invention.

[0029] In the figure: 1 a first stretching member, 11 a positioning column, 12 a sleeve ring, 13 a positioning sleeve, 14 a socket, 15 a first connecting sleeve, 16 a threaded connector, 2 a second stretching member, 3 a first movable tube, 4 a second movable tube, 5 a seat tube, 6 a scraping sleeve seat, 61 an elastic ring, 62 a sealing convex seat, 7 a positioning seat, 71 a slot, 72 a second connecting sleeve, 73 a connecting sealing disk, 8 a protective sleeve, 81 a locking head, 82 a locking sleeve seat, 83 a fixing seat, 84 a sealing ring, 9 a nozzle, 91 a spray hole, 92 a water spray chamber, 93 a sealing pad, 94 a third connecting sleeve, 10 a three-way water pipe, and 101 a positioning sleeve seat. DETAILED DESCRIPTION

[0030] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 those skilled in the art without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-8 The embodiment of the present invention provides a buried type sprinkler. In order to solve the above technical problems, the present invention provides a buried type sprinkler, including:

[0032] The first stretching member 1 has positioning posts 11 at both ends, a positioning sleeve 13 is provided outside the positioning post 11, and two insertion holes 14 are penetrated through the positioning sleeve 13, and the two ends of the positioning post 11 are plugged into the insertion holes 14;

[0033] A first movable tube 3 is arranged around the first stretching member 1, a second movable tube 4 is sleeved on the outer side of the first movable tube 3, and a sleeve seat tube 5 is sleeved on the outer side of the second movable tube 4;

[0034] The second stretching member 2 is arranged around the sleeve tube 5;

[0035] The soil scraping sleeve 6 is sleeved with the outer wall of the sleeve tube 5 and is arranged on the top of the second tensile member 2;

[0036] The positioning seat 7 is arranged at the bottom of the sleeve tube 5. The number of the positioning seats 7 is set to two and they are symmetrically arranged. A slot 71 is provided inside the positioning seat 7. One end of the first stretching member 1 extends into the positioning seat 7, and another positioning column 11 is arranged inside the slot 71.

[0037] The present invention provides a buried sprinkler, which comprises a first stretching member 1, a second stretching member 2, a first movable tube 3, a second movable tube 4, a sleeve seat tube 5 and a scraper sleeve seat 6. The whole body is fed with water from a three-way water pipe 10 at the bottom and transported to the inside of a positioning seat 7, and gradually flows into the inside of the sleeve seat tube 5. In the process of the water level gradually rising in the sleeve seat tube 5, the sleeve seat tube 5 is pushed to gradually rise and extend out of the protective sleeve 8. The second movable tube 4 and the first movable tube 3 inside the sleeve seat tube 5 will also gradually slide upward and rise under the drive of water pressure until the water is transported to the water spraying chamber 92 of the sprinkler 9, and then the water body is sprayed out through the spray hole 91 to realize irrigation operation. After the water conveying is completed, the first stretching member 1 pulls the first movable tube 3 downward inside to reset, and the second stretching member 2 pulls the sleeve tube 5 downward outside to reset, and at the same time can drive the second movable tube 4 to gradually move downward, so as to realize automatic stretching and reset after stopping irrigation. The double elastic stretching and reset setting of the inside and the outside has a fast reset speed and ensures uniform force during the overall reset process. In addition, the scraper sleeve 6 can cut and scrape away the soil that may exist on the outer wall of the sleeve tube 5 during the rising and falling process, so as to avoid the soil being transported into the sprinkler head 9 with the water body, causing the sprinkler head 9 to be blocked and affecting the service life.

[0038] In a further implementable embodiment of the present embodiment, the first tensile member 1 is configured as a tension spring, the second tensile member 2 is configured as a spring, rings 12 are fixedly provided at both ends of the first tensile member 1, the positioning column 11 is socketed with the rings 12, and the first tensile member 1, the positioning column 11, the rings 12 and the second tensile member 2 are all made of stainless steel.

[0039] In this embodiment, after the first movable tube 3 and the sleeve tube 5 are raised, the first stretching member 1 and the second stretching member 2 are removed from the water flow, and their own tension will pull the first movable tube 3 and the sleeve tube 5 downward to reset, and at the same time, will drive the second movable tube 4 therebetween to reset.

[0040] In a further implementable embodiment of the present embodiment, a first connecting sleeve 15 is provided at one end of the top of the positioning sleeve 13, a threaded connector 16 is fixedly provided at the top of the first connecting sleeve 15, one end of the top of the first movable tube 3 is fixedly connected to the bottom surface of the positioning sleeve 13, and the inner diameter and outer diameter are set to be the same in length, a first limiting ear is provided around the outer wall of the bottom of the first connecting sleeve 15, and a first extension ear is provided around the outer wall of one end of the bottom of the first movable tube 3, the first limiting ear and the first extension ear are set to be the same size and are set in the same vertical direction.

[0041] In the present embodiment, one end of the top of the first movable tube 3 is connected to the positioning sleeve 13, and can drive the positioning sleeve 13 to extend upward together when pushed by water pressure. When the water flow is stopped, the positioning column 11 installed inside the positioning sleeve 13 will move downward with the pulling force of the first stretching member 1, driving the first movable tube 3 to move downward accordingly, thereby resetting the first movable tube 3. During the rising process, the first connecting sleeve 15 can limit the range in which the first movable tube 3 and the positioning sleeve 13 can be raised, thereby preventing them from being washed out by the water flow as a whole, thereby ensuring the stability of the overall structure.

[0042] In a further feasible embodiment of the present invention, one end of the bottom of the second stretching member 2 is fixedly disposed on the top surface of the positioning seat 7 .

[0043] In this embodiment, the bottom of the second stretching member 2 is positioned at the top of the positioning seat 7, and the second stretching member 2 is arranged around the sleeve tube 5. After the sleeve tube 5 rises upward and the water flow is withdrawn, the second stretching member 2 will drive the sleeve tube 5 to move downward and reset by its own pulling force.

[0044] In a further implementable embodiment of the present invention, a groove is provided around the outer wall of the scraper sleeve 6, and an elastic ring 61 is matched inside the groove. A sealing boss 62 is fixed on the top of the scraper sleeve 6, and the sealing boss 62 is arranged around the sleeve tube 5.

[0045] The scraper sleeve 6 in this embodiment is configured to cut off and scrape away any soil that may exist on the outer wall of the sleeve pipe 5 during the process of raising and lowering, thereby preventing the soil from being transported into the sprinkler head 9 along with the water body. The elastic ring 61 is configured to protrude from the outer side of the scraper sleeve 6, and the elastic ring 61 made of elastic material can fully block any soil that may exist, thereby preventing the soil from entering the sprinkler head 9 along with the water flow.

[0046] In a further feasible embodiment of the present embodiment, the two positioning seats 7 are both semi-cylindrical in shape and are fitted together to form a cylindrical shape. The slots 71 of the two positioning seats 7 are fitted together to form an accommodating cavity. The two ends of the positioning column 11 are fixedly arranged inside the two accommodating cavities. A second connecting sleeve 72 is fixedly arranged on the top of the positioning seat 7. A connecting sealing disk 73 is sleeved on the outer side of the second connecting sleeve 72. The sleeve seat tube 5 is arranged on the top of the connecting sealing disk 73 and is arranged around the second connecting sleeve 72. The second movable tube 4 is arranged on the top of the second connecting sleeve 72.

[0047] The two positioning seats 7 in this embodiment are fitted together with the internal card slot holes 71 in the later stage to form an accommodating cavity. The positioning column 11 at the bottom of the first elastic member 1 is arranged in the accommodating cavity for positioning, and the first elastic member 1 is limited and positioned by the bottom. The sleeve seat tube 5 is arranged on the top of the connecting sealing disk 73 and is arranged around the second connecting sleeve 72. The second movable tube 4 is arranged on the top of the second connecting sleeve 72. The first movable tube 3 is movably arranged inside the second connecting sleeve 72, and the positions of the first movable tube 3, the second movable tube 4 and the sleeve seat tube 5 are supported and limited by the bottom respectively.

[0048] In a further implementable embodiment of the present embodiment, a protective sleeve 8 is sleeved on the outside of the positioning seat 7, a positioning cavity is provided on the inner wall of the protective sleeve 8 and the two positioning seats 7 are matched with the positioning cavity, a locking head 81 is matched on the outer wall of the protective sleeve 8, the scraper sleeve 6 is arranged inside the locking head 81, a sealing convex seat 62 is arranged on the inner wall of the locking head 81 and the outer wall diameter of the sleeve tube 5 and extends to the top of the locking head 81, a locking sleeve 82 is provided on the top of the locking head 81, a fixing seat 83 is provided on the top of the locking sleeve 82, a sealing ring 84 is arranged around the top of the fixing seat 83, a second limiting ear is provided on the bottom of the locking sleeve 82, a second extension ear is provided on the outer wall of the bottom end of the sleeve tube 5, the second extension ear is set to the same size as the second limiting ear and is set in the same vertical direction, a limiting ring is fixed on the inner wall of the locking sleeve 82 and the fixing seat 83, a second movable tube 4 is sleeved inside the limiting ring, a groove ring is provided on the surface of one end of the bottom of the second movable tube 4, and the limiting ring is made of elastic material and matches the groove ring.

[0049] The position below the locking head of the protective sleeve 8 in this embodiment is buried under the ground, the scraper sleeve seat 6 is arranged inside the locking head 81, and the sealing protrusion 62 is arranged to prevent water from flowing out through the locking head 81. The locking sleeve seat 82 on the top thereof will limit the movable range of the sleeve seat tube 5, and the limiting ring fixedly arranged on the inner wall of the locking sleeve seat 82 and the fixing seat 83 will limit the movable range of the second movable tube 4, preventing it from leaving the entire protective sleeve 8 after being lifted up by water pressure, thereby ensuring the stability of the overall structure.

[0050] In a further implementable embodiment of the present embodiment, a nozzle 9 is matched with the top of the threaded connector 16, a plurality of spray holes 91 are arranged at one end of the top of the nozzle 9, a water spray chamber 92 is connected to the bottom of the nozzle 9, a sealing gasket 93 is arranged between the nozzle 9 and the water spray chamber 92, a third connecting sleeve 94 is fixedly arranged at the bottom of the water spray chamber 92, and an inner thread is arranged on the inner wall of the third connecting sleeve 94 and matches the threaded connector 16.

[0051] After the third connecting sleeve 94 in this embodiment is matched and connected with the threaded connector 16, water will be gradually transported from the bottom through the third connecting sleeve 94, and then the water flow will be transported to the water spray chamber 92, and sprayed out from the spray hole 91 to achieve irrigation. The end of the sprinkler head 9 can be adjusted to a rotary type, an automatic steering type or other styles according to irrigation needs, and can be set up and used to meet different irrigation needs.

[0052] In a further feasible embodiment of the present embodiment, a three-way water pipe 10 is threadedly connected to one end of the bottom of the protective sleeve 8, a positioning sleeve 101 is provided around the inner wall of the three-way water pipe 10 near one end of the protective sleeve 8, a mounting groove is provided on the top surface of the positioning sleeve 101, two positioning seats 7 are arranged inside the mounting groove, and the inner diameter length of the positioning sleeve 101 is smaller than the inner diameter length of the positioning seat 7.

[0053] The top of the positioning sleeve 101 inside the three-way water pipe 10 in this embodiment is matched with the positioning seat 7 to ensure that water flows through the three-way water pipe 10 and then enters the positioning seat 7 to transport water, thereby ensuring accurate irrigation work.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. 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 different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0055] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0056] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A buried sprinkler, characterized in that: include: A first stretching member (1) is provided with positioning columns (11) at both ends, a positioning sleeve (13) is provided outside the positioning column (11), the positioning sleeve (13) is penetrated by two insertion holes (14), and the two ends of the positioning column (11) are plugged into the insertion holes (14); A first movable tube (3) is arranged around the first stretching member (1), a second movable tube (4) is sleeved on the outer side of the first movable tube (3), and a sleeve seat tube (5) is sleeved on the outer side of the second movable tube (4); A second stretching member (2) is arranged around the sleeve tube (5); A soil scraping sleeve (6) is sleeved with the outer wall of the sleeve tube (5) and is arranged on the top of the second stretching member (2); A positioning seat (7) is arranged at the bottom of the sleeve tube (5); the number of the positioning seats (7) is set to two and they are symmetrically arranged; a slot opening (71) is provided inside the positioning seat (7); one end of the first stretching member (1) extends into the interior of the positioning seat (7), and the other positioning column (11) is arranged inside the slot opening (71).

2. The buried sprinkler according to claim 1, characterized in that: The first stretching member (1) is configured as a tension spring, the second stretching member (2) is configured as a spring, sleeve rings (12) are fixedly provided at both ends of the first stretching member (1), the positioning column (11) is sleeved with the sleeve ring (12), and the first stretching member (1), the positioning column (11), the sleeve ring (12) and the second stretching member (2) are all made of stainless steel.

3. The buried sprinkler according to claim 1, characterized in that: A first connecting sleeve (15) is provided at one end of the top of the positioning sleeve (13), a threaded connector (16) is fixedly provided at the top of the first connecting sleeve (15), and one end of the top of the first movable tube (3) is fixedly connected to the bottom surface of the positioning sleeve (13), and the inner diameter and outer diameter lengths are both set to be the same.

4. The buried sprinkler according to claim 1, characterized in that: One end of the bottom of the second stretching member (2) is fixedly arranged on the top surface of the positioning seat (7).

5. The buried sprinkler according to claim 1, characterized in that: The outer wall of the scraper sleeve (6) is surrounded by a groove, and an elastic ring (61) is matched inside the groove. A sealing convex seat (62) is fixedly provided on the top of the scraper sleeve (6), and the sealing convex seat (62) is arranged around the sleeve tube (5).

6. The buried sprinkler according to claim 1, characterized in that: The two positioning seats (7) are both configured to be semi-cylindrical in shape and are fitted together to form a cylindrical shape. The slots (71) of the two positioning seats (7) are fitted together to form an accommodating cavity. The two ends of the positioning column (11) are fixedly arranged inside the two accommodating cavities. A second connecting sleeve (72) is fixedly arranged on the top of the positioning seat (7). A connecting sealing disk (73) is sleeved on the outside of the second connecting sleeve (72). The sleeve seat tube (5) is arranged on the top of the connecting sealing disk (73) and surrounds the second connecting sleeve (72). The second movable tube (4) is arranged on the top of the second connecting sleeve (72).

7. The buried sprinkler according to claim 5, characterized in that: The outer side of the positioning seat (7) is sleeved with a protective sleeve (8), the inner wall of the protective sleeve (8) is provided with a positioning cavity and the two positioning seats (7) match the positioning cavity, the outer wall of the protective sleeve (8) is matched with a locking head (81), the scraping sleeve seat (6) is arranged inside the locking head (81), the sealing convex seat (62) is arranged on the inner wall of the locking head (81) and the outer wall diameter of the sleeve seat tube (5) and extends to the top of the locking head (81), A locking sleeve (82) is provided on the top of the locking head (81), a fixing seat (83) is provided on the top of the locking sleeve (82), a sealing ring (84) is provided around the top of the fixing seat (83), a limiting ring is fixedly provided on the inner walls of the locking sleeve (82) and the fixing seat (83), a second movable tube (4) is sleeved inside the limiting ring, a groove ring is provided on the bottom end surface of the second movable tube (4), and the limiting ring is made of elastic material and matches the groove ring.

8. The buried sprinkler according to claim 3, characterized in that: A nozzle (9) is matched with the top of the threaded connector (16), a plurality of spray holes (91) are arranged at one end of the top of the nozzle (9), a water spray chamber (92) is connected to the bottom of the nozzle (9), a sealing gasket (93) is arranged between the nozzle (9) and the water spray chamber (92), a third connecting sleeve (94) is fixedly arranged at the bottom of the water spray chamber (92), an inner wall of the third connecting sleeve (94) is provided with an internal thread and matches the threaded connector (16).

9. The buried sprinkler according to claim 7, characterized in that: A three-way water pipe (10) is threadedly connected to one end of the bottom of the protective sleeve (8); a positioning sleeve (101) is arranged around the inner wall of one end of the three-way water pipe (10) close to the protective sleeve (8); a mounting groove is arranged on the top surface of the positioning sleeve (101); two positioning seats (7) are arranged inside the mounting groove; and the inner diameter length of the positioning sleeve (101) is smaller than the inner diameter length of the positioning seat (7).

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