High-performance fire hydrant valve seat

Abstract

The utility model relates to the technical field of fire fighting, in particular to a high-performance fire hydrant valve seat which comprises a valve seat body and a rotating rod inserted into and movably clamped on the inner wall of the valve seat body, and a plurality of inner sealing rings are arranged between the outer wall of the rotating rod and the inner wall of the valve seat body. A lubricating rotating device is arranged between the outer wall of the rotating rod and the inner wall of the valve seat body, a positioning device is arranged on the outer wall of the rotating rod, a positioning groove matched with the positioning device is integrally formed in the inner wall of the valve seat body, and the lubricating rotating device reduces friction between the inner wall of the valve seat body and the rotating rod. And the positioning groove is matched with the positioning device to position when the valve seat body is connected with the rotating rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting technical field, concretely relates to a high performance fire hydrant valve seat. BACKGROUND

[0002] The fire hydrant is also called fire hydrant, and the fire hydrant is a fixed fire-fighting facility, which is installed on a water pipeline and is closed under normal circumstances, and when a fire breaks out, the fire hydrant can be quickly opened through the switch on the fire hydrant and connected with the fire pipeline, and a large amount of water is output through the fire hydrant to extinguish the fire, in order to control the opening and closing of the fire hydrant, a valve core is installed in the fire hydrant, in order to make the sealing performance of the valve core installation position better, a valve seat matched with the valve core is installed in the fire hydrant, so that the valve core rotates in the valve seat, and thus the overall water leakage prevention performance of the fire hydrant is greatly improved under the normal opening and closing effect of the valve core.

[0003] Although the above-mentioned prior art can solve the corresponding technical problems, there are still some defects: the existing valve seat seals the valve core by built-in multi-layer sealing ring, and thus in the process of opening and closing the rotating valve core, the rotation needs to overcome the frictional resistance of the inner cavity of the valve seat and the viscous force of the sealing ring, the rotation needs a large force, the rotation performance is poor, the opening and closing is relatively inconvenient, and at the same time, when the valve seat is installed, it is relatively difficult to position the installation depth of the rotating part of the valve seat, and the experience requirement for installation is high. UTILITY MODEL CONTENTS

[0004] The utility model aims at the defects and deficiencies of the prior art, and provides a high performance fire hydrant valve seat with good rotation performance and simple installation positioning.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high performance fire hydrant valve seat, which comprises a valve seat body and a rotating rod inserted and movably clamped in the inner wall of the valve seat body, a plurality of inner sealing rings are arranged between the outer wall of the rotating rod and the inner wall of the valve seat body, a lubricating rotating device is arranged between the outer wall of the rotating rod and the inner wall of the valve seat body, the outer wall of the rotating rod is provided with a positioning device, the inner wall of the valve seat body is integrally formed with a positioning groove matched with the positioning device, the lubricating rotating device reduces the friction between the inner wall of the valve seat body and the rotating rod, and the positioning groove cooperates with the positioning device to position when the valve seat body and the rotating rod are connected.

[0006] Further improvement is that the outer wall bottom of the valve seat body is provided with an outer thread layer for connecting the fire hydrant casting.

[0007] Further improvement is that the outer wall of the valve seat body is also provided with an outer sealing ring.

[0008] Further improvement is that the outer wall of the top of the valve seat body is provided with an upper positioning plate.

[0009] Further improvement is that the top end of the rotating rod is provided with a handle mounting opening.

[0010] Further improvement is that the lubricating rotating device comprises a first accommodating groove arranged on the outer wall of the rotating rod and a second accommodating groove arranged on the inner wall of the valve seat body and corresponding to the first accommodating groove, and the first accommodating groove and the second accommodating groove are internally provided with freely-rolling balls, and the cavities of the first accommodating groove and the second accommodating groove are filled with lubricating liquid.

[0011] Further improvement is that the outer wall of the valve seat body is provided with a dismounting opening penetratingly extending to the second accommodating groove, and the inner wall of the dismounting opening is detachably provided with a sealing plug.

[0012] Further improvement is that the positioning device comprises a sliding groove fixedly installed on the outer wall of the rotating rod and a bullet-shaped outer top block slidingly arranged in the sliding groove, and an outer push spring is arranged between one side of the outer top block and the inner wall of the sliding groove.

[0013] After the above technical scheme is adopted, the beneficial effects of the present application are as follows: when the present application is installed, the position between the rotating rod and the valve seat body can be positioned by the positioning device, so that the installation and positioning of the rotating rod are simpler and require lower experience, and after installation, the sliding friction of rotation can be converted into rolling friction by the balls of the lubricating rotating device, so that the force required for resisting friction is reduced, and the force required for rotation is lower and the rotation performance is better. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0015] Fig. 1 is a structural schematic view of the valve seat in a front view;

[0016] Fig. 2 is a structural schematic view of the valve seat in a top view;

[0017] Fig. 3 is a structural schematic view of the positioning device in a front view. DETAILED DESCRIPTION

[0018] The present application will be further described in combination with the drawings and specific embodiments.

[0019] Reference Figs. 1-3The technical scheme adopted by the embodiment is shown as follows: a high-performance fire hydrant valve seat, which comprises a valve seat body 1 and a rotating rod 2 inserted and movably clamped in the inner wall of the valve seat body 1, a plurality of inner sealing rings 7 are arranged between the outer wall of the rotating rod 2 and the inner wall of the valve seat body 1, a lubricating rotating device 5 is arranged between the outer wall of the rotating rod 2 and the inner wall of the valve seat body 1, the lubricating rotating device 5 comprises a first accommodating groove 52 arranged on the outer wall of the rotating rod 2 and a second accommodating groove 51 arranged on the inner wall of the valve seat body 1 and corresponding to the first accommodating groove 52, balls 53 capable of freely rolling are arranged in the first accommodating groove 52 and the second accommodating groove 51, lubricating liquid is filled in the cavities of the first accommodating groove 52 and the second accommodating groove 51, the outer wall of the rotating rod 2 is provided with a positioning device 6, the positioning device 6 comprises a sliding groove 61 fixedly installed on the outer wall of the rotating rod 2 and a bullet-shaped outer top block 63 movably arranged in the sliding groove 61, an outer push spring 62 is arranged between one side of the outer top block 63 and the inner wall of the sliding groove 61, and the inner wall of the valve seat body 1 is integrally formed with a positioning groove 9 matched with the positioning device 6; the lubricating rotating device 5 reduces the friction between the inner wall of the valve seat body 1 and the rotating rod 2, and the positioning device 6 is positioned when the valve seat body 1 and the rotating rod 2 are connected through cooperation of the positioning groove 9; in use, first, the rotating rod 2 is inserted into the valve seat body 1, so that the outer wall of the rotating rod 2 moves downward along the inner wall of the valve seat body 1; when the outer top block 63 of the positioning device 6 of the rotating rod 2 is loaded, the outer top block 63 is pressed into the sliding groove 61 by the inner wall of the valve seat body 1, so that the outer push spring 62 generates elastic force; when the positioning device 6 moves to the position of the positioning groove 9 of the valve seat body 1, the elastic force of the outer push spring 62 pushes the outer top block 63 out, so that the outer top block 63 is inserted into the positioning groove 9 and generates a knocking sound, and at the same time, the outer top block 63 provides a downward resistance; thus, the user can know that the rotating rod 2 is installed at the required position, the installation and positioning of the rotating rod 2 are more simple, and the experience requirement is lower; then, the opening and closing element is connected to the bottom end of the rotating rod 2, the first accommodating groove 52 is aligned with the second accommodating groove 51, and the valve seat body 1 is inserted into the fire hydrant casting together with the rotating rod 2 and the opening and closing element; when the rotating rod 2 is rotated, the balls 53 of the lubricating rotating device 5 can convert the sliding friction force of rotation into rolling friction force, so that the force required for resisting friction resistance is reduced, and the force required for rotation is lower, and the rotation performance is better.

[0020] An outer thread layer 8 is arranged at the bottom of the outer wall of the valve seat body 1, which is used for connecting the fire hydrant casting; when the valve seat body 1 is installed on the fire hydrant casting, the outer thread layer 8 can be engaged to make the connection more stable and the installation process more simple, and the valve seat body 1 is not easy to be inclined.

[0021] The outer wall of the valve seat body 1 is further provided with an outer sealing ring 3, which is used for improving the sealing performance of the valve seat body 1 after being installed in the fire hydrant casting.

[0022] The upper positioning plate 4 is arranged on the top outer wall of the valve seat body 1, which is beneficial to position the height of the valve seat body 1 through the upper positioning plate 4 when the valve seat body 1 is installed into the fire hydrant casting and is lowered to the appropriate position, so that the normal use is not affected by the excessive sinking of the valve seat body 1.

[0023] The handle mounting port 10 is arranged on the top end of the rotating rod 2, which is beneficial to more simply mount the handle on the connecting rod 2.

[0024] The dismounting port 54 is arranged on the outer wall of the valve seat body 1 and extends to the second accommodating groove 51, and the sealing plug 55 is detachably arranged on the inner wall of the dismounting port 54, which is beneficial to mount and dismount the ball 53 through the dismounting port, so that the maintenance is more convenient, and the dismounting port 54 is closed through the sealing plug 55 after being mounted, so that the ball 53 is prevented from falling out.

[0025] The working principle of the utility model is as follows: when the utility model is used, first, the rotating rod 2 is inserted into the valve seat body 1, the outer wall of the rotating rod 2 moves downwards along the inner wall of the valve seat body 1, when the outer top block 63 of the positioning device 6 is mounted, the outer top block 63 is pressed into the sliding groove 61 by the inner wall of the valve seat body 1, and the outer push spring 62 generates elastic force, when the positioning device 6 moves to the position of the positioning groove 9 of the valve seat body 1, the elastic force of the outer push spring 62 pushes the outer top block 63 out, the outer top block 63 is inserted into the positioning groove 9, and a knocking sound is generated, at the same time, the descending resistance is provided, so that the user can know that the rotating rod 2 is installed to the required position, the installation and positioning of the rotating rod 2 are more simple, the experience requirement is lower, then, the opening and closing element is connected to the bottom end of the rotating rod 2, the first accommodating groove 52 is aligned with the second accommodating groove 51, the valve seat body 1 is inserted into the fire hydrant casting together with the rotating rod 2 and the opening and closing element, when the rotating rod 2 is rotated, the ball 53 of the lubricating rotating device 5 is used to convert the sliding friction force of rotation into rolling friction force, the force required for resisting friction resistance is reduced, so that the force required for rotation is lower, and the rotation performance is better.

[0026] The utility model protects the structure of the product, the model of each element is not the content protected by the utility model, is also the known technology, and the elements on the market that can realize the above functions of the utility model can be used as a kind of selection application. Therefore, the model and other parameters of the element are not described in detail in the utility model. The contribution of the utility model lies in that each element is combined scientifically.

[0027] The basic principle and main features of the utility model and its advantages are shown and described above, and the person skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and the description in the description are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents. The utility model is not described in detail, which is the known technology of the person skilled in the art.

Claims

1. A high-performance fire hydrant valve seat, comprising a valve seat body (1) and a rotating rod (2) inserted into and movably engaged with the inner wall of the valve seat body (1), wherein a plurality of inner sealing rings (7) are provided between the outer wall of the rotating rod (2) and the inner wall of the valve seat body (1), characterized in that: The outer wall of the rotating rod (2) is provided with a lubricating rotating device (5) between the inner wall of the valve seat body (1), the outer wall of the rotating rod (2) is provided with a positioning device (6), the inner wall of the valve seat body (1) is integrally formed with a positioning groove (9) matched with the positioning device (6), the lubricating rotating device (5) reduces the friction between the inner wall of the valve seat body (1) and the rotating rod (2), and the positioning groove (9) cooperates with the positioning device (6) to position when the valve seat body (1) and the rotating rod (2) are connected.

2. A high performance fire hydrant valve seat according to claim 1, wherein: The outer wall of the valve seat body (1) is provided with an outer thread layer (8) at the bottom for connecting the fire hydrant casting.

3. A high performance fire hydrant valve seat according to claim 1, wherein: The outer wall of the valve seat body (1) is further provided with an outer sealing ring (3).

4. A high performance fire hydrant valve seat according to claim 1, wherein: The outer wall of the valve seat body (1) is provided with an upper positioning plate (4) at the top.

5. A high performance fire hydrant valve seat according to claim 1, wherein: The top end of the rotating rod (2) is provided with a handle mounting port (10).

6. A high performance fire hydrant valve seat according to claim 1, wherein: The lubricating rotating device (5) comprises a first containing groove (52) arranged on the outer wall of the rotating rod (2) and a second containing groove (51) arranged on the inner wall of the valve seat body (1) corresponding to the first containing groove (52), the first containing groove (52) and the second containing groove (51) are provided with freely rolling balls (53) therein, and the first containing groove (52) and the second containing groove (51) are filled with lubricating liquid.

7. A high performance fire hydrant valve seat according to claim 6, wherein: The outer wall of the valve seat body (1) is provided with a loading and unloading port (54) penetrating to the second containing groove (51), and the inner wall of the loading and unloading port (54) is detachably provided with a sealing plug (55).

8. A high performance fire hydrant valve seat according to claim 1, wherein: The positioning device (6) comprises a sliding groove (61) fixedly installed on the outer wall of the rotating rod (2) and a bullet-shaped outer top block (63) slidingly arranged in the sliding groove (61), and an outer push spring (62) is arranged between one side of the outer top block (63) and the inner wall of the sliding groove (61).

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