JPH077755U - Valve structure at the bottom of the sprinkler case - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention provides a valve structure at the lower end of the sprinkler case. [Constitution] According to the present invention, a valve seat is formed in the opening at the lower end of the casing, and a water pressure valve is provided at the lower end of the main water supply valve so that it can be pressed into contact with the valve seat. It is configured to do so.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a valve structure at a lower end of a sprinkler case.

[0002]

[Prior art]

 Conventionally, sprinklers have been used to spray water over a wide range of lawns on golf courses, but as one form of this sprinkler, a sprinkler nozzle can be moved up and down during casing buried in the ground. However, there is a structure in which a water supply pipe is connected to the same nozzle, and the water pressure from the water supply pipe raises the water spray nozzle to the ground to inject water. Moreover, such a sprinkler is equipped with a rotating mechanism for automatically rotating the water spray nozzle, and the water spray nozzle is automatically rotated by a fixed angle to spray water over a wide range.

Water is supplied to the sprinkler by pumping water from a pump pipe buried in the ground to the lower end of the sprinkler case to elevate a water pressure increasing mechanism housed in the sprinkler case and also to the nozzle. It is configured.

A valve structure is provided at the lower end of the case so as to be opened by the water pressure from the pressure feed pipe, and the valve is closed when no water pressure is applied.

[0005]

[Problems to be solved by the device]

 However, the valve structure at the lower end of such a case is such that the valve operating structure is housed in a sealed valve support case fixedly installed in the sprinkler case, and the valve connected to the operating structure is configured to be opened and closed by hydraulic pressure. The valve seat is designed so that the valve can come into contact with the water inlet that is fixed in the case.

Therefore, a snorkel tube is provided in the valve support case in which the valve operation structure is housed so that air can be supplied and exhausted, and the snorkel tube is configured to communicate with the atmosphere. The structure works smoothly.

Therefore, the structure of the valve portion becomes complicated, and the total length of the case is increased by the amount of the valve supporting case accommodating the valve operating structure, the construction cost is expensive, and maintenance work and parts replacement work are difficult. there were.

An object of the present invention is to provide a sprinkler capable of solving the above problems.

[0009]

[Means for Solving the Problems]

 In the present invention, the lower end of the sprinkler casing is connected to the water pipe buried in the ground, and the main water pipe is loosely fitted in the slide bearing fixed in the casing so that water is sprayed at the tip of the main water pipe. A nozzle pipe with a nozzle is freely rotatably fitted, and the main water supply pipe is raised and the nozzle pipe is rotated by the water supply pressure from the water supply pipe, while water is supplied into the main water supply pipe and the nozzle pipe, and within a certain range. In a sprinkler configured to spray water with water, a valve seat is formed at the opening at the lower end of the casing, and a hydraulic valve that can be pressed into contact with the valve seat is provided at the lower end of the main water supply pipe. It is intended to provide a valve structure at the lower end of the case of a sprinkler configured to perform a valve opening operation.

[0010]

[Effect of device]

 According to this invention, the valve seat is formed in the opening at the lower end of the casing, the valve seat is provided at the lower end of the main water supply pipe, and the valve portion is press-contactable, and the hydraulic valve is opened by the pressure water from the water supply pipe. Since it is configured to operate as a valve, a water pressure valve can be constructed with a simple structure, and since a valve support case is not required, a snorkel tube is not required when the water pressure valve is activated, and a small amount of necessary parts is required for the casing. It can be shortened and the underground burial construction is simple and inexpensive. Furthermore, there is the effect that maintenance, inspection work and parts replacement of the hydraulic valve can be done easily.

[0011]

【Example】

 1 is a sectional front view of a sprinkler having a detachable structure according to the present invention.

In the casing 1 of the sprinkler A, the upper half 1-1 has a larger diameter than the lower half 1-2, and a step 2 is formed at the boundary so that the upper edge of the casing is at the same level as the ground surface. To be buried underground.

A sprinkler body B is housed in the casing 1, and an opening 12 at the lower end of the casing 1 is screwed and connected to a water supply pipe C buried in the ground.

The sprinkler body B is composed of a fixing mechanism portion D fixed to the casing 1 and an elevating mechanism portion E that is partially loosely fitted in the fixing mechanism portion D and moves up and down.

The fixing mechanism portion D is connected to the lower half portion 1-2 of the casing 1, the peripheral flange 3 fixed to the step portion 2 formed in the middle of the casing 1 via bolts 4, and the tip thereof. It is composed of a guide tube 5.

The lifting mechanism section E, which is partially loosely fitted in the fixing mechanism section D and is configured to be movable up and down, is configured as follows.

That is, the elevating mechanism section E has the main water supply pipe 6 formed in the lower part thereof, and the detachable pipe M is engaged with and disengaged from the upper part of the main water supply pipe 6 by the rotating operation on the upper part of the main water supply pipe 6. In this detachable pipe M, a rotary pipe 7 is freely rotatably fitted, and a nozzle 10 having a rotary mechanism section 9 is connected to the upper end of the rotary pipe 7 via a nozzle pipe 8. Has been done.

Next, the structure of the up-down mechanism E will be described.

The main water supply pipe 6 is provided with a water pressure valve 11 at the lower end, and the water pressure valve 11 can be pressed into the opening 12 at the lower end of the casing 1 from the inside, and the water pressure valve 11 is provided above the water pressure valve 11. A water inlet 13 is provided around the lower end of 6, and the pressure water from the water supply pipe C is sent from the water inlet 13 to the water supply pipe 6 by opening the water pressure valve 11 with water pressure. Reference numeral 14 denotes a guide piece projecting from the outer peripheral edge of the lower end of the main water supply pipe 6, and reference numeral 15 denotes a groove groove configured to engage with the guide piece 14 to stop rotation and guide up and down. It is formed on the inner peripheral surface of the lower half 1-2.

The main water supply pipe 6 is loosely fitted in a guide cylinder 5 fixed to the step portion 2 of the casing 1 in a vertically movable manner, and the outer peripheral surface of the main water supply pipe 6 and the upper end edge of the guide cylinder 5 are connected to each other. A seal member 16 made of an elastic material is interposed between them. Reference numeral 17 is a spring provided between the lower end of the main water supply pipe 6 and the guide cylinder 5.

A detachable pipe M is fitted on the inner peripheral surface of the upper portion of the main water supply pipe 6 by engagement and disengagement by rotating operation.

That is, on the upper end surface of the main water supply pipe 6, insertion recesses are provided on the left and right, and an engaging groove is provided in communication with the insertion recess and on the inner peripheral wall below the upper end surface.

Further, engaging protrusions 20 are provided on the peripheral wall of the removable pipe M so as to project left and right, and are formed in a shape facing the insertion recess. Therefore, the removable pipe M is fitted into the main water supply pipe 6. In this case, when the engaging projection 20 is inserted from the insertion recess of the main water supply pipe 6 and rotated by a certain angle, the engaging projection 20 is engaged in the engaging groove. In this state, The main water supply pipe 6 and the detachable pipe M are integrally moved up and down. On the other hand, when detaching the detachable pipe M from the main water pipe 6, the detachable pipe M is turned to its original position to engage the protrusion. If 20 is returned to the position of the insertion recess and pulled up as it is, the detachable pipe M will be removed from the main water supply pipe 6.

The detachable pipe M has a peripheral surface bulging portion 21 formed at the upper end above the engaging projection 20. The lower end is mainly formed between the lower surface of the bulging portion 21 and the upper end surface of the main water supply pipe 6. A rubber cap 22 fixedly installed on the upper peripheral wall of the water supply pipe 6 is erected, and the rubber cap 22 urges the detachable pipe M upward to ensure the engagement between the engaging projection 20 and the engaging groove 19. ing.

In this way, the rotary pipe 7 is loosely fitted in the detachable pipe M, and the nozzle pipe 8 bent at a certain angle is screwed continuously to the upper end of the rotary pipe 7, and the tip end of the nozzle pipe 8 is connected. A nozzle 10 is provided, and a water applicator 26 is arranged in the jetting direction of the nozzle 10, and the water applicator 26 is rotatably rotatably supported on the upper surface of the bent portion of the nozzle pipe 8. It is connected to the blade 27, and a pivot spring 27 'of the rotary blade 27 is surrounded by a return spring 28 for rotating and biasing the blade in a fixed direction. When the fountain pressure is applied, a rotating torque is generated on the rotary blade 27 because the water contact surface is inclined, and the rotary blade 27 rotates by a certain angle against the bias of the return spring 28. The water pad 26 is released from the rotary blade 27 by the urging of the return spring 28. Back to the original position.

In addition, a collision portion 29 that collides with the nozzle pipe 8 is provided in the middle of the rotary blade 27 so that it can be abutted against the receiving piece 30 that is connected to the nozzle pipe 8.

Further, the sprinkler body B is provided with a rotation switching mechanism section S that automatically switches the rotation direction and reciprocates when rotated by a certain angle.

A lid 31 for opening and closing the upper end opening of the casing 1 is removably connected to the upper end of the pivot 27 ′ of the rotary blade 27.

The gist of the present invention in the sprinkler A configured as described above is that a water pressure valve 11 is provided at the lower end of the main water supply pipe 6 so that the opening 12 at the lower end of the casing 1 can be opened and closed. Especially.

That is, a required number of water inlets 13 are formed diagonally at the bottom bottom of the main water supply pipe 6, the central outer bottom bulges downward, and an annular hydraulic valve 11 is provided at the bottom end thereof. They are linked.

The water pressure valve 11 is composed of an annular frame 11-1 and an annular valve body 11-2 made of a rubber material and continuously provided on the lower surface of the annular frame 11-1.

The hydraulic valve 11 is fixed by fitting the annular frame 11-1 to the projection 6-1 at the bottom of the lower end of the main water supply pipe 6, and when replacing the annular valve element 11-2, The annular frame 11-1 can be easily replaced by removing it from the protrusion 6-1.

Reference numeral 11-3 is a valve seat formed in the opening 12 of the lower half 1-2 of the casing 1, and is formed in a sharp annular shape protruding inwardly. The annular valve body 11-2 of the pressure valve 11 is press-contactable.

Reference numeral 11-4 indicates a pressing piece which is continuously provided on the protrusion 6-1 of the main water supply pipe 6 for fixedly supporting the annular valve body.

Therefore, when the water is supplied from the water supply pipe C through the opening 12, the pressure water pushes the hydraulic valve 11 upward by the water pressure, and the water is supplied from the gap formed between the pressure seat 11-3 and the valve seat 11-3. Then, water will be supplied from the water inlet 13 into the main water supply pipe 6.

On the other hand, when the water pressure of the pressure water disappears, the main water supply pipe 6 descends due to the urging of the spring 17, and the water pressure valve 11 at the lower end is pressed against the valve seat 11-3 to close the valve.

Further, FIG. 2 shows another embodiment, in which the water inlet 13 is formed in the peripheral wall of the main water supply pipe 6, and moreover, on the outer bottom surface of the main water supply pipe 6. The annular valve element 11-2 made of an elastic material is fixedly installed, and the water inlet channel is the same as that in the above-mentioned embodiment.

The embodiment of the present invention is configured as described above, and when water is sprinkled using the sprinkler A, the water is supplied from the water pipe C buried in the ground to the bottom of the casing 1. When water is sent to the opening 12 of the half 1-1, the water pressure valve 11 causes the water pressure valve 11 to rise and open together with the main water supply pipe 6, and the water enters the main water supply pipe 6 through the water inlet 13 from the gap. The water pressure causes the main water supply pipe 6 to be lifted to expose the nozzle 10 to the ground.

At the same time, pressurized water is jetted from the nozzle 10 and rotated by a certain angle via the water applicator 26. The rotation is performed by rotating the rotating pipe 7 in the detachable pipe M and integrally rotating the nozzle pipe 8 connected to the rotating pipe 7.

On the other hand, when the water supply is stopped to stop the water sprinkling, the main water supply pipe 6 is lowered by the urging of the spring 17 connected to the main water supply pipe 6, and the hydraulic valve 11 closes the opening 12.

[Brief description of drawings]

FIG. 1 is a sectional front view of a valve structure at a lower end of a case of a sprinkler of the present invention.

FIG. 2 is an explanatory diagram of a main part of another embodiment.

[Explanation of symbols]

 C Water supply pipe D Fixing mechanism part E Lifting mechanism part M Attaching / detaching pipe 1 Casing 6 Main water supply pipe 7 Rotating pipe 8 Nozzle pipe 11-3 Valve seat 11 Water pressure valve 12 Opening part

Front page continuation (72) Inventor, Yoshihisa Ono 1-32, Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Agricultural Machinery Co., Ltd. (72) Inventor, Osamu Mori 37, Taiheidai, Katsuta-cho, Katsuta-gun, Okayama Kyoritsu Kinen Industrial Corporation Katsuo Factory (72) Inventor Tokuaki Nakamura 37 Taiheidai, Katsuta-cho, Katsuta-gun, Okayama Kyoritsu Kinzoku Kogyo Co., Ltd. Shoo Factory (72) Katsumi Yokoyama 37 Taitai-dai, Katsuta-cho, Katsuta-gun Okayama Prefecture Kyoritsu Metal industry Co., Ltd. Shoo factory

Claims (1)

[Scope of utility model registration request] 1. A casing (1) of a sprinkler (A) is connected to a lower end of a casing (1) of a water pipe (C) buried in the ground, and a main bearing pipe is connected to a slide bearing (20) fixed in the casing (1). (16) is loosely fitted, the nozzle pipe (18) having a water spray nozzle at the tip in the main water supply pipe (16) is rotatably fitted, and by the water supply pressure from the water supply pipe (C), While raising the main water supply pipe (16) and rotating the nozzle pipe (18), water is sent into the main water supply pipe (16) and the nozzle pipe (18), and a sprinkler configured to spray water in a certain range A valve seat (11-3) is formed in the opening (12) at the lower end of (1), and a water pressure valve (11) that can be pressed into contact with the valve seat (11-3) is provided at the lower end of the main water supply pipe (16). , The valve structure at the lower end of the sprinkler case configured so that the hydraulic valve (11) is opened by the pressure water from the water supply pipe (C).