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CN-122006920-A - Controllable anti-drip spray head

CN122006920ACN 122006920 ACN122006920 ACN 122006920ACN-122006920-A

Abstract

The invention discloses a controllable drip-proof spray head, belongs to the technical field of spraying equipment, and aims to solve the technical problems that when the existing spray head stops working, drip is easy to occur, residual liquid in the spray head cannot be thoroughly sucked back, a flow channel is easy to be blocked due to residual liquid retention, sealing reliability is poor, action cooperativity of all components is insufficient, and working smoothness and drip-proof effect are difficult to be considered, and the technical scheme is as follows: including the main disk seat and the vice disk seat of mutual fixed intercommunication, be equipped with arc recess on the main disk seat, cylinder groove I and cylinder groove II, the three communicates each other, be equipped with the liquid hole with cylinder groove I intercommunication on the vice disk seat, set up first seal assembly and second seal assembly on the cylinder groove II respectively, the annular inside groove of cylinder groove I inner wall is inlayed and is equipped with soft sealing pad, each subassembly is the action in coordination, can form dual seal and produce the negative pressure and suck-back raffinate when stopping carrying liquid, effectively stop dripping and leaking and runner jam, guarantee spraying operation quality, but this shower nozzle wide application in various application, spraying operation scene.

Inventors

  • Qiu Yuzhe
  • CHEN LIWEN
  • NI XIANXIAN
  • XIE TIANZE
  • JIAN YANBING
  • TU YUFEI
  • FANG LUE
  • Peng Fengjie

Assignees

  • 福建理工大学

Dates

Publication Date
20260512
Application Date
20260407

Claims (9)

  1. 1. The controllable anti-drip spray head is characterized by comprising a main valve seat (1) and an auxiliary valve seat (3) fixedly communicated with one end of the main valve seat (1); An arc-shaped groove (6) is formed in one end, far away from the auxiliary valve seat (3), of the main valve seat (1), a cylindrical groove II (27) which is communicated with the arc-shaped groove is formed in one end of the arc-shaped groove (6), a cylindrical groove I (5) is formed in one end, close to the auxiliary valve seat (3), of the main valve seat (1), and the cylindrical groove I (5) is communicated with the cylindrical groove II (27) and is larger than the cylindrical groove II (27) in size; a liquid hole (11) is formed in one end, far away from the main valve seat (1), of the auxiliary valve seat (3), and the liquid hole (11) is communicated with the cylindrical groove I (5); One end that cylinder groove II (27) is close to cylinder groove I (5) is equipped with first seal assembly, and the one end that cylinder groove II (27) kept away from cylinder groove I (5) is equipped with second seal assembly, and liquid is sent into cylinder groove I (5) through arc recess (6), cylinder groove II (27), and when stopping carrying liquid through liquid hole (11) blowout again, first seal assembly and second seal assembly collaborative action form double seal, produce the negative pressure simultaneously and inhale raffinate back to main valve seat (1) inside.
  2. 2. The controllable drip-proof nozzle according to claim 1, wherein the first sealing assembly comprises a cylindrical block II (31), one end of the cylindrical block II (31) extends into the cylindrical groove I (5) and is fixedly provided with a convex plate (35), one side of the convex plate (35) is abutted with the inner wall of the cylindrical groove I (5) to block the cylindrical groove I (5), and one end of the cylindrical block II (31) away from the convex plate (35) is fixedly connected with a connecting rod I (9); The second sealing assembly comprises a barb head (25) fixedly assembled at one end, far away from a cylindrical blocking block II (31), of the connecting rod I (9), a cylindrical blocking block I (26) is fixedly connected to one end, far away from the connecting rod I (9), of the barb head (25), a fixing ring (24) is fixedly assembled on the inner wall of a cylindrical groove II (27), the barb head (25) is abutted to the fixing ring (24), and the cylindrical blocking block I (26) is slidably arranged inside the fixing ring (24).
  3. 3. The controllable drip-proof nozzle according to claim 2, characterized in that the side of the fixed ring (24) far away from the barb head (25) is provided with an annular groove (23), and one end of the cylindrical block I (26) far away from the barb head (25) is fixedly connected with a connecting rod II (18); the inner wall of the arc-shaped groove (6) is fixedly connected with a plurality of connecting plates (8), one ends, close to each other, of the connecting plates (8) are fixedly connected with a fixed cylinder sleeve (7) together, a limit circular plate (21) is assembled in the fixed cylinder sleeve (7) in a sliding mode, one side of the limit circular plate (21) is fixedly connected with one end, far away from a cylinder blocking block I (26), of a connecting rod II (18), a tension spring I (22) is assembled between the limit circular plate (21) and the inner wall of the fixed cylinder sleeve (7), and two ends of the tension spring I (22) are respectively abutted to the limit circular plate (21) and the inner wall of the fixed cylinder sleeve (7) through hooks; When liquid is fed, the cylinder blocking block I (26) is pushed to transversely move, and the limiting circular plate (21) is synchronously driven to stretch the tension spring I (22).
  4. 4. The controllable drip-proof nozzle according to claim 1, characterized in that the inner wall of the cylindrical groove I (5) is provided with an annular inner groove (13), and a soft sealing gasket (28) is fixedly embedded in the annular inner groove (13); An annular outer groove I (12) is formed in one end, close to the main valve seat (1), of the auxiliary valve seat (3), two cylindrical connecting holes (14) communicated with the annular outer groove I (12) are formed in the side face of the annular inner groove (13), and a pressing assembly used for pressing the soft sealing gasket (28) is arranged in the annular outer groove I (12).
  5. 5. The controllable drip-proof nozzle as claimed in claim 4, wherein the pressing assembly comprises two outer semi-arc plates (30) assembled in the annular outer groove I (12) in a sliding manner, one side of the outer semi-arc plates (30) close to the annular inner groove (13) is fixedly connected with a cylindrical block II (34), one end of the cylindrical block II (34) far away from the outer semi-arc plates (30) is fixedly connected with an inner semi-arc plate (33), and the inner semi-arc plate (33) is abutted against the soft sealing gasket (28); One end of each outer semi-arc plate (30) close to each other is provided with a guide groove (48) and a guide post (47) fixedly connected with each other, the guide posts (47) are inserted into the guide grooves (48) in a sliding manner, tension springs III (46) are arranged between the guide posts (47) and the inner walls of the guide grooves (48), and two ends of each tension spring III (46) are respectively abutted with the guide posts (47) and the inner walls of the guide grooves (48) through hooks; a notch (50) is arranged on one side of the outer semi-arc-shaped plate (30), and an arc-shaped groove (49) is arranged on the inner wall of the notch (50).
  6. 6. The controllable drip-proof nozzle according to claim 4, characterized in that an annular outer groove II (19) is arranged at one end of the main valve seat (1) close to the auxiliary valve seat (3), and a release component for releasing the pressing state of the soft sealing gasket (28) is arranged in the annular outer groove II (19); The release assembly comprises an annular outer guard plate (2) which is assembled on the inner wall of an annular outer groove II (19) in a sliding mode, strip-shaped vertical holes (16) are formed in the inner wall of the annular outer groove II (19), annular sealing grooves (15) which are communicated with the strip-shaped vertical holes (16) are formed in the main valve seat (1), vertical connecting rods (10) are fixedly connected to one side of the annular outer guard plate (2), sealing annular plates (17) are fixedly sleeved on the outer walls of the vertical connecting rods (10), the sealing annular plates (17) are assembled inside the annular sealing grooves (15) in a sliding mode, the strip-shaped vertical holes (16) are plugged, and the vertical connecting rods (10) are fixedly connected with the connecting rods I (9).
  7. 7. The controllable drip-proof nozzle as claimed in claim 6, characterized in that one side of the annular outer guard plate (2) close to the auxiliary valve seat (3) is fixedly connected with two cylindrical blocks I (32), and one end of the cylindrical block I (32) far away from the annular outer guard plate (2) is fixedly connected with a sliding plate (36); Two rectangular vertical grooves (20) which are symmetrically arranged are formed in the outer wall of the auxiliary valve seat (3), a sliding plate (36) is slidably assembled in the rectangular vertical grooves (20), and the sliding plate (36) is matched with the arc-shaped grooves (49); When the connecting rod I (9) transversely moves, the annular outer guard plate (2) is driven to move through the vertical connecting rod (10), and then the sliding plate (36) is driven to abut against the arc-shaped groove (49) through the cylindrical block I (32), so that the two outer semi-arc-shaped plates (30) are mutually far away from each other to release the pressing of the soft sealing gasket (28).
  8. 8. The controllable drip-proof nozzle according to claim 1, characterized in that an annular supporting groove (45) is arranged at one end of the auxiliary valve seat (3) far away from the main valve seat (1), and a sealing component for sealing the liquid hole (11) is arranged in the annular supporting groove (45); the sealing assembly comprises two sealing outer covers (37) which are assembled in the annular supporting groove (45) in a sliding mode, a sliding groove (38) is formed in the bottom of the sealing outer cover (37), a sliding block (39) is assembled in the sliding groove (38) in a sliding mode, a tension spring II (40) is assembled between the sliding block (39) and the inner wall of the sliding groove (38), and two ends of the tension spring II (40) are connected with the sliding block (39) and the inner wall of the sliding groove (38) through hooks respectively; one end of the sliding block (39) far away from the tension spring II (40) is fixedly connected with an inner sealing plate (41), and the two inner sealing plates (41) jointly form a sealing structure to seal the liquid hole (11).
  9. 9. The controllable drip-proof nozzle as claimed in claim 5, characterized in that two symmetrically arranged strip-shaped holes (4) are arranged on one side of the annular outer groove I (12), and the strip-shaped holes (4) are communicated with the annular outer groove I (12); A strip-shaped transverse plate (29) is fixedly connected to one side of the sealing outer cover (37) close to the annular outer groove I (12), and the strip-shaped transverse plate (29) is arranged in the strip-shaped hole (4) in a sliding manner and is fixedly connected with the outer semi-arc-shaped plate (30); An inclined plane II (44) is formed at one end, far away from the main valve seat (1), of the auxiliary valve seat (3), a yielding groove (43) is formed at one side of the inner sealing plate (41), and an inclined plane I (42) matched with the inclined plane II (44) is formed in the inner wall of the yielding groove (43); When the outer semi-arc-shaped plate (30) moves, the sealing outer cover (37) is driven to be away from through the strip-shaped transverse plate (29), the inclined surface I (42) is matched with the inclined surface II (44), and the sliding block (39) drives the inner sealing plate (41) to be separated from the liquid hole (11) under the action of the tension spring II (40).

Description

Controllable anti-drip spray head Technical Field The invention relates to the technical field of spray heads, in particular to a controllable anti-drip spray head. Background The spray head is widely applied to the fields of coating, spraying and the like, and has the core functions of stably spraying liquid medium according to preset requirements, so that the uniformity and stability of operation are ensured. In practical application, liquid medium is conveyed and sprayed out through the spray head, when liquid conveying is stopped, partial liquid tends to remain in the spray head, and the residual liquid is easy to drop from the spray nozzle due to the action of gravity, so that not only can medium loss be caused, but also operation workpieces and operation environments can be polluted, and the operation quality is influenced. The sealing structure of the existing spray head is mostly of a single sealing design, the spray nozzle can be simply plugged only when the operation is stopped, thorough sealing is difficult to achieve, and the phenomenon of dripping still occurs. Meanwhile, although a part of spray heads are provided with a back suction structure, the back suction effect is poor, residual liquid in the spray heads cannot be thoroughly sucked back into the valve body, and the residual liquid stays for a long time and is easy to cause flow channel blockage, so that the follow-up use of the spray heads is affected. In addition, the sealing component of the existing spray head and the opening and closing of the liquid conveying channel are controlled independently, synchronous linkage is difficult to realize during opening, grading sealing cannot be formed during closing, sealing reliability is insufficient, the problems of leakage and blockage are further aggravated, and the use requirement of high-precision operation cannot be met. Disclosure of Invention The invention aims to solve the defects that most of spray nozzle sealing structures in the prior art are single sealing design, the spray nozzle can be simply plugged only when the operation is stopped, the thorough sealing is difficult to realize, partial liquid tends to remain in the spray nozzle, and the residual liquid is easy to drip from the spray nozzle due to the action of gravity, and provides a controllable drip-proof spray nozzle. In order to achieve the above purpose, the present invention adopts the following technical scheme: A controllable anti-drip spray head comprises a main valve seat and an auxiliary valve seat fixedly communicated with one end of the main valve seat; an arc groove is formed in one end, far away from the auxiliary valve seat, of the main valve seat, a cylindrical groove II which is communicated with the main valve seat integrally is formed in one end of the arc groove, a cylindrical groove I is formed in one end, close to the auxiliary valve seat, of the main valve seat, and the cylindrical groove I is communicated with the cylindrical groove II and is larger than the cylindrical groove II in size; one end of the auxiliary valve seat, which is far away from the main valve seat, is provided with a liquid hole which is communicated with the cylindrical groove I; the one end that cylinder groove II is close to cylinder groove I is equipped with first seal assembly, and cylinder groove II keeps away from cylinder groove I's one end is equipped with second seal assembly, and liquid is sent into cylinder groove I through arc recess, cylinder groove II, and through the liquid hole blowout, when stopping carrying liquid, first seal assembly and second seal assembly collaborative action form double seal, produce the negative pressure simultaneously and suck back the raffinate to main valve seat inside, stop the water clock. In one possible design, the first sealing component comprises a cylindrical blocking block II, one end of the cylindrical blocking block II extends into the cylindrical groove I and is fixedly provided with a convex plate, one side of the convex plate is abutted with the inner wall of the cylindrical groove I to block the cylindrical groove I, and one end of the cylindrical blocking block II away from the convex plate is fixedly connected with a connecting rod I; The second seal assembly comprises a barb head fixedly assembled at one end of the connecting rod I, far away from the cylinder block II, the barb head is fixedly connected with the cylinder block I at one end, far away from the connecting rod I, of the barb head, a fixed ring is fixedly assembled on the inner wall of the cylinder groove II, the barb head is abutted with the fixed ring, and the cylinder block I is slidably penetrated in the fixed ring. In one possible design, an annular groove is formed in one side, far away from the barb head, of the fixing ring, and a connecting rod II is fixedly connected to one end, far away from the barb head, of the cylindrical blocking block I; The inner wall of the arc-shaped groove is fixedly connec