Wet alarm valve for fire safety

Abstract

The utility model provides a wet-type alarm valve for fire safety, which comprises a valve body, an annular fixing piece arranged on the valve body, four limiting rods which are arranged on the annular fixing piece in a sliding manner and are annularly arranged at equal intervals, and a valve rod which is fixedly arranged at one end of each of the four limiting rods, the first spring is arranged on the four limiting rods in a sleeving mode and located between the annular fixing piece and the annular limiting piece, and the check blocks are arranged at the other ends of the four limiting rods. The annular limiting block is fixedly arranged on the valve body in an annular mode, is parallel to the limiting rods, and is used for driving the four limiting rods to move rightwards to a preset position when the annular limiting block drives the four limiting rods to move rightwards; the four positioning blocks are used for limiting the four limiting rods to move rightwards, and the at least two positioning mechanisms are arranged between the valve body and the annular limiting piece and used for fixing the annular limiting piece on the valve body or releasing the annular limiting piece from being fixed to the valve body when the four positioning blocks limit the four limiting rods to move rightwards.

Description

TECHNICAL FIELD

[0001] The utility model relates to wet type alarm valve technical field, concretely relates to a fire safety uses wet type alarm valve. BACKGROUND

[0002] Wet type alarm valve is a kind of only allowing water one-way flow into sprinkler system and alarm under the specified flow one-way valve.Wet type alarm valve is equal to the water pressure before and after valve flap (water passes through the water pressure balance small hole in guide pipe, keeps the water pressure balance before and after valve flap), and wet type alarm valve is an important link of fire safety guarantee, it provides powerful guarantee for people's life and property safety by real-time monitoring fire and timely alarm.

[0003] A kind of wet type alarm valve for fire fighting with Chinese patent number CN202221839583.3, including valve body, the inside of the valve body is fixedly installed with several valve seats, the inside of the valve body one side is provided with positioning column, the positioning column is slidably installed with top rod by the sliding hole being formed on it, the outer wall of the top rod is fixedly sleeved with the valve flap corresponding to the position and quantity of valve seat, the outer wall of the top rod is sleeved with second spring between one valve flap and positioning column.The patent in the cooperation of valve body, valve seat, slide rod, valve flap, second spring, positioning column and top rod, by the setting of multiple valve flaps in alarm valve, in case the rightmost valve flap wears seriously, the valve flap located on the left side will also replace the rightmost valve flap to continue working, ensure the sealing effect of valve body, and the overall leakage of valve body will not be caused directly by the damage of one valve flap, ensure the stability of valve body as a whole.

[0004] Although the above-mentioned patent can control multiple valve flaps to achieve sealing effect by using second spring, and the second spring can be replaced, but during the replacement of the second spring, the annular limiting member needs to be pulled first to drive the limiting rod to move right on the annular fixing member, so that the annular limiting member is completely separated from the outer surface of the arc-shaped cover plate, and the first spring is extruded to produce elastic deformation, but after pulling the annular limiting member to move, the annular limiting member cannot be fixed on the annular fixing member, and manual pulling of the annular limiting member is needed to prevent the annular limiting member from shielding the arc-shaped cover plate, which is not convenient for replacement and installation of the second spring. UTILITY MODEL CONTENTS

[0005] The utility model aims at the defects and deficiencies of prior art, and provides a kind of wet type alarm valve for fire safety.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme is: a fire safety is with wet type alarm valve, including the valve body, the annular fixing piece of setting on valve body, the four limit rods of annular equidistance setting, the annular limit piece of fixed setting one end of four limit rods and the sleeve setting on valve body surface, the first spring of sleeve setting four limit rods and being located annular fixing piece and annular limit piece between, the stopper of setting the other end of four limit rods, still include annular fixed setting on valve body and with limit rod parallel arrangement for when annular limit block drives four limit rods to move to the right to predetermined position, limit four limit rods to move to the right four positioning blocks, set up between valve body and annular limit piece for when four positioning blocks limit four limit rods to move to the right, at least two positioning mechanisms of annular limit piece fixed or unfix on valve body.

[0007] Further improvement is: the positioning mechanism includes the mounting block fixedly arranged on the valve body, the two hinged plates arranged on the mounting block, the hinge rod arranged at one end between the two hinged plates, the limit block fixedly arranged at the other end of the hinge rod, and the limit slot opened on the annular limit piece and matched with the limit block.

[0008] Further improvement is: the hinge rod and the limit block are polypropylene rods and polypropylene blocks.

[0009] Further improvement is: each limit block is provided with an anti-skid protrusion.

[0010] Further improvement is: the annular limit piece is provided with an anti-skid groove in the limit slot, the anti-skid protrusion is connected with the anti-skid groove in a clamping manner, and the anti-skid groove is communicated with the limit slot.

[0011] Further improvement is: the anti-skid protrusion is a circular arc protrusion, and the anti-skid groove is a circular arc groove.

[0012] Further improvement is: the right end surface of the annular fixing piece is provided with a buffer layer.

[0013] Further improvement is: the buffer layer is a rubber layer.

[0014] After adopting the above technical scheme, the utility model has the beneficial effects that: when the second spring needs to be replaced, the annular limit piece is pulled to the right to drive the limit rod to move to the right on the annular fixing piece until the four positioning blocks limit the four limit rods to move to the right, and then the annular limit piece is fixed on the valve body through the positioning mechanism, without the need for manual continuous pulling of the annular limit piece, the annular limit piece can prevent the arc-shaped cover plate from being blocked, and the replacement and installation of the second spring can be facilitated.

[0015] Further effect: when the four positioning blocks limit the four limiting rods to move right, each hinged rod is driven to rotate around the two hinge plates to the end of the limiting clamping groove, until the limiting clamping block enters the limiting clamping groove, at this time, the annular limiting piece is pushed by the pushing force generated by the compression of the first spring, so that the limiting clamping block is clamped in the limiting clamping groove, and the annular limiting piece is limited to move horizontally on the valve body through the spring force of the first spring, the limiting clamping block and the limiting clamping groove, so as to complete the fixation of the annular limiting piece on the valve body.

[0016] Further effect: when the four positioning blocks limit the four limiting rods to move right, each hinged rod is driven to rotate around the two hinge plates to the end of the limiting clamping groove, until the limiting clamping block enters the limiting clamping groove, at this time, the annular limiting piece is pushed by the pushing force generated by the compression of the first spring, so that the limiting clamping block is clamped in the limiting clamping groove, and the annular limiting piece is limited to move horizontally on the valve body through the spring force of the first spring, the limiting clamping block and the limiting clamping groove, so as to complete the fixation of the annular limiting piece on the valve body.

[0017] Further effect: when the four positioning blocks limit the four limiting rods to move right, each hinged rod is driven to rotate around the two hinge plates to the end of the limiting clamping groove, until the limiting clamping block enters the limiting clamping groove, at this time, the annular limiting piece is pushed by the pushing force generated by the compression of the first spring, so that the limiting clamping block is clamped in the limiting clamping groove, and the annular limiting piece is limited to move horizontally on the valve body through the spring force of the first spring, the limiting clamping block and the limiting clamping groove, so as to complete the fixation of the annular limiting piece on the valve body.

[0018] Further effect: when the four positioning blocks limit the four limiting rods to move right, each hinged rod is driven to rotate around the two hinge plates to the end of the limiting clamping groove, until the limiting clamping block enters the limiting clamping groove, at this time, the annular limiting piece is pushed by the pushing force generated by the compression of the first spring, so that the limiting clamping block is clamped in the limiting clamping groove, and the annular limiting piece is limited to move horizontally on the valve body through the spring force of the first spring, the limiting clamping block and the limiting clamping groove, so as to complete the fixation of the annular limiting piece on the valve body. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 is a structural schematic diagram of the present application;

[0021] Figure 2 is another state diagram corresponding to Figure 1 ;

[0022] Figure 3 is a side view of the valve body, the mounting block, the hinge plate, the hinge rod, the limiting clamping block and the anti-skid protrusion in the present application;

[0023] Figure 4 is an enlarged view of A part corresponding to Figure 2 ;

[0024] Explanation of reference signs: valve body 1, annular fixing member 2, limiting rod 3, annular limiting member 4, first spring 5, stop block 6, positioning block 7, mounting block 8, hinged plate 9, hinged rod 10, limiting clamping block 11, limiting clamping groove 12, anti-skid convex block 13, anti-skid concave groove 14, buffer layer 15. DETAILED DESCRIPTION

[0025] The utility model will be further explained in connection with the drawings and specific embodiments.

[0026] Reference Figures 1 to 4 The technical scheme adopted in the specific embodiment is shown in the drawings. The technical scheme is as follows: a wet type alarm valve for fire safety, comprising a valve body 1, an annular fixing member 2 arranged on the valve body 1, four limiting rods 3 arranged on the annular fixing member 2 in a slidable manner and equidistantly in a ring shape, an annular limiting member 4 fixedly arranged on one end of the four limiting rods 3 and sleeved on the surface of the valve body 1, a first spring 5 sleeved on the four limiting rods 3 and located between the annular fixing member 2 and the annular limiting member 4, a stop block 6 arranged on the other end of the four limiting rods 3, four positioning blocks 6 arranged in a ring shape on the valve body 1 in parallel with the limiting rods 3 and used for limiting the rightward movement of the four limiting rods 3 when the annular limiting block drives the four limiting rods 3 to move rightward to a predetermined position, and at least two positioning mechanisms arranged between the valve body 1 and the annular limiting member 4 and used for fixing or releasing the annular limiting member 4 on the valve body 1 when the four positioning blocks 6 limit the rightward movement of the four limiting rods 3.

[0027] The predetermined position of the rightward movement of the four limiting rods 3 is that, when the annular limiting member 4 moves rightward to be separated from the outer surface of the arc-shaped cover plate, the right end surface position of the stop block 6 on the four limiting rods 3, as shown in the drawings,

[0028] The four positioning blocks 6 are located on the right side of the four limiting rods 3. The four positioning blocks 6 can also be arranged as a ring body fixedly arranged on the valve body 1.

[0029] When two positioning mechanisms are arranged, the two positioning mechanisms are arranged symmetrically in up-down or left-right or inclined directions. In the present application, there are four positioning mechanisms, which are arranged equidistantly in a ring shape on the valve body 1 and the annular limiting member 4. The mounting positions of the four positioning mechanisms are staggered with the positions of the four limiting rods 3, and the arrangement positions of the four positioning mechanisms are close to the end of the annular fixing member 2.

[0030] The positioning mechanism comprises a mounting block 8 fixedly arranged on the valve body 1, two hinged plates 9 arranged on the mounting block 8, a hinged rod 10 arranged in a hinged manner at one end between the two hinged plates 9, a limiting clamping block 11 fixedly arranged at the other end of the hinged rod 10, and a limiting clamping groove 12 opened on the annular limiting member 4 and matched with the limiting clamping block 11 in a gap manner. Figure 1 andFigure 2 As shown, the length of the limiting groove 12 on the annular limiting member 4 is greater than the length of the limiting groove 12. The hinge rod 10 and the limiting block 11 are L-shaped rods. One end of the hinge rod 10 can be rotatably connected between the two hinge plates 9 by means of a rotating shaft or a pin, etc. This hinge method is common knowledge and will not be described in detail here.

[0031] The hinge rod 10 and the limiting block 11 are made of polypropylene. Polypropylene (PP) has high mechanical strength and bending resistance at room temperature. It can also be made of aluminum or steel. Steel has the characteristics of high hardness, resistance to breakage, and low cost.

[0032] Each of the aforementioned limiting blocks 11 is provided with an anti-slip protrusion 13. Without the anti-slip groove 14, the anti-slip protrusion 13 can be set as a triangular block. In this case, there are multiple triangular blocks, which are equidistantly arranged on the limiting blocks 11. The tips of the triangular blocks are pressed against the annular limiting member 4. The triangular blocks can be rubber blocks, plastic blocks, metal blocks, etc.

[0033] The annular limiting member 4 is provided with an anti-slip groove 14 within the limiting slot 12. The anti-slip protrusion 13 engages with the anti-slip groove 14, and the anti-slip groove 14 communicates with the limiting slot 12. The anti-slip protrusion 13 is located on the right end face of the limiting block 11, and the anti-slip groove 14 is located on the end face closest to the limiting block 11.

[0034] The anti-slip protrusion 13 is an arc-shaped protrusion, and the anti-slip groove 14 is an arc-shaped groove. Alternatively, the anti-slip protrusion 13 can be a square block, in which case the arc-shaped groove is a square groove.

[0035] A buffer layer 15 is provided on the right end face of the annular fastener 2. The four limiting rods 3 also slide on the buffer layer 15.

[0036] The buffer layer 15 is a rubber layer.

[0037] The working principle of this utility model is as follows: When the second spring needs to be replaced, the annular limiting member 4 is pulled to the right, which drives the limiting rod 3 to move to the right on the annular fixing member 2 until the four positioning blocks 6 restrict the four limiting rods 3 from moving to the right. Then, each hinge rod 10 is driven to rotate around the two hinge plates 9 towards the limiting slot 12 until the limiting block 11 enters the limiting slot 12. At this time, the annular limiting member 4 is pushed by the compression of the first spring 5, so that the limiting block 11 is locked in the limiting slot 12. Through the spring force of the first spring 5, the limiting block 11 and the limiting slot 12 are coordinated to restrict the lateral movement of the annular limiting member 4 on the valve body 1, thereby completing the fixation of the annular limiting member 4 on the valve body 1. It is not necessary to manually pull the annular limiting member 4 continuously, which can prevent the annular limiting member 4 from blocking the arc-shaped cover plate, and facilitate the replacement and installation of the second spring.

[0038] When it is necessary to release the fixation between the annular limiting member 4 and the valve body 1, pull each hinge rod 10 around the two hinge plates 9 and rotate it away from the limiting slot 12 so that each limiting block 11 is disengaged from the limiting slot 12. Then the drive on the annular limiting member 4 can be released. The pushing force generated by the compression of the first spring 5 pushes the annular limiting member 4 to limit the arc-shaped cover plate again.

[0039] When the limiting block 11 is inserted into the limiting slot 12, the anti-slip protrusion 13 is inserted into the anti-slip groove 14, which can increase the stability of the limiting block 11 in the limiting slot 12 and make it less likely for the limiting block 11 to slip out of the limiting slot 12.

[0040] The buffer layer 15 can reduce the impact force generated by the block 6 hitting the right end face of the annular fixing member 2 when the first spring 5 pushes the annular limiting member 4 to move to the left.

[0041] This utility model aims to protect the structure of the product. The model numbers of the individual components are not the subject of this utility model's protection and are already known technology. Any component on the market that can achieve the functions described above can be used as a wet alarm valve for fire safety. Therefore, the model numbers and other parameters of the components are not described in detail in this utility model. The contribution of this utility model lies in the scientific combination of the various components.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions provided are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents. Any aspects of this utility model not detailed herein are well-known to those skilled in the art.

Claims

1. A wet alarm valve for fire safety, comprising a valve body, an annular fixing member arranged on the valve body, four limit rods arranged annularly and equidistantly and slidably arranged on the annular fixing member, an annular limit member fixedly arranged on one end of the four limit rods and sleeved on the surface of the valve body, a first spring sleeved on the four limit rods and located between the annular fixing member and the annular limit member, and a stopper arranged on the other end of the four limit rods, characterized in that: The positioning mechanism comprises a mounting block fixedly arranged on the valve body, two hinged plates arranged on the mounting block, a hinged rod with one end hingedly arranged between the two hinged plates, a limiting block fixedly arranged on the other end of the hinged rod, and a limiting block slot formed on the annular limiting member and in clearance fit with the limiting block. ​ 2. A wet alarm valve for fire safety according to claim 1, characterized in that: The hinged rod and the limiting block are polypropylene rods and polypropylene blocks.

3. A wet alarm valve for fire safety according to claim 2, characterized in that: Each of the limiting blocks is provided with an anti-skid protrusion.

4. A wet alarm valve for fire safety according to claim 2, characterized in that: The annular limiting member is provided with an anti-skid groove in the limiting block slot.

5. A wet alarm valve for fire safety according to claim 4, characterized in that: The anti-skid protrusion is in clamping connection with the anti-skid groove, and the anti-skid groove is in communication with the limiting block slot.

6. A wet alarm valve for fire safety according to claim 5, characterized in that: The anti-skid protrusion is a circular arc protrusion, and the anti-skid groove is a circular arc groove.

7. A wet alarm valve for fire safety according to claim 1, characterized in that: The right end surface of the annular fixing member is provided with a buffer layer.

8. A wet alarm valve for fire safety according to claim 7, characterized in that: The buffer layer is a rubber layer.

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