Water supply and drainage flow limiting device for building equipment automatic control system

Abstract

The utility model relates to the technical field of pipeline throttling equipment, and discloses a water supply and drainage flow limiting device for an automatic control system of building equipment, which comprises a valve body, a valve core, a valve rod and a hand wheel are arranged in the valve body, the valve body is annular, fixing pipes are arranged at two ends of the valve body, the valve body is rotatably connected with the fixing pipes, and the hand wheel is connected with the valve core. The hose is arranged in the valve body and the fixing pipe, the water pipes at the two ends are directly communicated with each other through the hose, water flow in the water pipes only passes through the interiors of the hoses, the problem that parts in the valve body are rusted due to soaking is solved, the valve body is isolated from the water flow in the water pipes through the hose, and the service life of the water pipes is prolonged. The problem that solid impurities carried by water flow are deposited in gaps in the valve body is avoided, the telescopic rods are arranged between the valve body and the fixed pipe, the valve body is directly rotated, then the telescopic rods are stretched, and the water pipe is rapidly cut off through mutual extrusion of the two telescopic rods.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline throttling equipment, in particular to a water supply and drainage current limiting device for a building equipment automatic control system. Background Art

[0002] The working principle of the throttle valve is to control the flow of the fluid by adjusting the opening of the valve. The main function of the throttle valve is to protect the pipeline and related equipment from the influence of excessive flow, to prevent pipeline rupture, equipment damage and other problems. In addition, the throttle valve can also be used for flow regulation and fluid distribution, to improve the stability and efficiency of the building equipment automatic control system.

[0003] The structures of throttle valves on the market are relatively uniform. Most of them control the reciprocating movement of the valve core by turning the screw with a hand wheel, and finally control the valve opening. Although this structure is simple and reliable, it still has the following problems: sealing problems caused by wear between the valve core and the valve body; sedimentation of impurities such as gravel brought by water flow in the gaps in the valve body; rust problems of parts; and the inability to close the valve quickly in an emergency. Therefore, the structure of the throttle valve needs to be improved. Utility Model Content

[0004] In view of the shortcomings of the existing throttle valves mentioned in the background technology during use, the utility model provides a water supply and drainage flow limiting device for a building equipment automatic control system. By arranging a soft pipe in the valve and sleeve the valve core and the valve body on the outside of the hose, it not only avoids the sediment brought by the water flow from being deposited in the groove of the valve body but also solves the rust problem of parts; by arranging the valve body with two closing modes, the throttle valve can be quickly closed in an emergency, thereby solving many shortcomings of the existing throttle valves.

[0005] The utility model provides the following technical solutions: a water supply and drainage flow limiting device for a building equipment automatic control system, comprising a valve body, wherein a valve core, a valve stem and a hand wheel are arranged inside the valve body, the valve body is annular in shape, fixed pipes are arranged on both sides of the valve body, the valve body is rotatably connected to the fixed pipe, a hose is arranged inside the valve body and the fixed pipe, water pipes at both ends are directly connected to each other through the hose, so that the water flow in the water pipe only passes through the inside of the hose, thereby avoiding the problem of rusting of parts in the valve body due to immersion, isolating the valve body from the water flow in the water pipe through the hose, thereby avoiding the problem of solid impurities carried by the water flow being deposited in the gaps in the valve body.

[0006] Preferably, the hose is similar to a fire hose and has the characteristics of wear resistance, strong pressure resistance, good sealing and the like.

[0007] Preferably, the inner end of the fixed tube is rotatably connected to the annular side wall of the valve body, and the outer end of the fixed tube is sleeved on the outside of the water pipe and the hose. A thread is provided on the outer wall of the outer end of the fixed tube, and the thickness of the outer wall of the fixed tube covered with the threaded section gradually increases from the inside to the outside. An extrusion groove is circumferentially provided at the threaded end of the fixed tube, and the length direction of the extrusion groove is parallel to the axial direction of the fixed tube. A nut is sleeved on the outer side of the fixed tube.

[0008] Preferably, two telescopic rods are provided between the adjacent side walls of the valve body and the fixed tube, the telescopic rods are symmetrically arranged along the axial direction of the hose, and fixed blocks are fixedly installed at both ends of the telescopic rods, and the fixed blocks are rotatably connected to the side walls of the valve body and the fixed tube on both sides respectively.

[0009] Preferably, an elastic block is provided between the outer wall of the hose and the annular inner wall of the valve body, one end of the elastic block is fixedly connected to the side wall of the fixed tube, and the other end of the elastic block presses against the annular inner wall of the valve body under the action of its own elastic force, and a groove is provided on the annular inner wall of the valve body at a position corresponding to the elastic block, and the groove is adapted to the shape of the end of the elastic block.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model connects the water pipes on both sides with a hose, and then arranges the valve core and the valve body outside the hose. On the one hand, the hose is used to isolate the water flow, thereby preventing the parts of the valve body from rusting due to long-term immersion. On the other hand, it prevents solid impurities such as gravel from being deposited in the gaps in the valve.

[0012] 2. The utility model arranges a telescopic rod in the valve body, and arranges the valve body and the water pipe in a relatively rotatable connection mode. By rotating the valve body to pull the telescopic rod, the telescopic rods on both sides of the hose squeeze the hose, thereby realizing rapid interruption of the water flow in the hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a cross-sectional view of the utility model;

[0015] Figure 3 This is a front view of the valve body of the utility model;

[0016] Figure 4 It is a cross-sectional view of the valve body of the utility model.

[0017] In the figure: 1. valve body; 11. valve core; 12. valve stem; 13. hand wheel; 2. water pipe; 3. hose; 4. fixed pipe; 41. extrusion groove; 42. nut; 5. telescopic rod; 6. fixing block; 7. elastic clamp block; 8. clamping groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 A water supply and drainage flow limiting device for a building equipment automatic control system includes a valve body 1, a hose 3 and a fixed pipe 4. The hose 3 is used to connect the water pipes 2 at both ends. The valve body 1 and the fixed pipe 4 are sleeved on the outside of the hose 3. A fixed pipe 4 is provided on each side of the valve body 1. One end of the fixed pipe 4 is rotatably connected to the valve body 1, and the other end of the fixed pipe 4 is sleeved on the outside of the water pipe 2 and the hose 3.

[0020] The “inner end” of the fixed tube 4 refers to an end close to the valve body 1 , and the “outer end” of the fixed tube 4 refers to an end away from the valve body 1 .

[0021] See also Figure 1 and Figure 2 A thread is provided on the outer wall of the end portion of the fixed tube 4 connected to the water pipe 2, and the thickness of the outer wall of the fixed tube 4 covering the thread gradually increases from the inside to the outside, and the end portion of the fixed tube 4 covering the thread is provided with a plurality of extrusion grooves 41 in a circular array along its axial direction, and a nut 42 is sleeved on the outer side of the fixed tube 4. By screwing the nut 42, the outer end of the fixed tube 4 is contracted toward the axial direction and the internal hose 3 and the water pipe 2 are clamped, so as to install the fixed tube 4 on the water pipe 2 and ensure the sealing of both ends of the hose 2.

[0022] See also Figure 1 and Figure 2 The valve body 1 is in a circular shape as a whole. The axial middle part of the valve body 1 is provided with a valve core 11, a valve stem 12 and a hand wheel 13 from the inside to the outside. The valve stem 12 is rotatably connected to the side wall of the valve body 1, the outer end of the valve stem 12 is fixedly connected to the center of the hand wheel 13, and the inner end of the valve stem 12 is rotatably connected to the top surface of the valve core 11. By turning the hand wheel 13, the valve stem 12 is driven to control the internal valve core 11 to squeeze the hose 3. This is a traditional adjustment method.

[0023] See also Figures 1 to 4Two telescopic rods 5 are symmetrically arranged along the axial direction of the hose 3 between the adjacent side walls of the valve body 1 and the fixed tube 4. Fixed blocks 6 are fixedly installed at both ends of the telescopic rods 5. The two fixed blocks 6 are rotatably connected to the side walls of the valve body 1 and the fixed tube 4 respectively. The valve body 1 is rotated to make the fixed blocks 6 on the valve body 1 move synchronously. The two telescopic rods 5 are gradually stretched and moved closer to the axis of the hose 3 as the valve body 1 rotates. The hose 3 is quickly closed by the mutual squeezing of the two telescopic rods 5. The side wall of the fixed tube 4 is fixedly connected to one end of the elastic clamping block 7. The other end of the elastic clamping block 7 is tightly attached to the annular inner wall of the external valve body 1 under the action of its own elastic force. A card groove 8 adapted to the shape of the end of the elastic clamping block 7 is opened on the annular inner wall of the valve body 1. The elastic clamping block 7 is inserted into the inside of the card groove 8 and pressed against the valve body 1 to prevent it from rotating in the opposite direction, thereby locking the hose 3.

[0024] The method of use (working principle) of the utility model is as follows: rotate the hand wheel 13 to make the valve core 11 reach the maximum opening, set the valve body 1 and the fixed tube 4 on one of the water pipes 2, cover the two ends of the hose 3 on the outer walls of the water pipes 2 at the two ends, move the valve body 1 and the hose 3 and align them with the two ends of the hose 3, turn the nut 42 to bend the threaded end of the hose 3 toward the axial direction of the hose 3 and press the hose 3 against the outer wall of the water pipe 2, the device is fixed as a whole, adjust the hand wheel 13 to make the valve stem 12 drive the valve core 11 to move toward the hose 3 and compress it, so as to realize traditional throttling. Since the water flow only passes through the inner wall of the hose 3, the solids such as mud and sand brought by the water flow will not be deposited inside the valve body 1, and since the parts of the valve body 1 are not directly immersed in the water flow, the rust problem of the parts is avoided at the same time.

[0025] When an emergency problem such as a leak occurs in the water pipe and the water pipe needs to be quickly cut off, the hand wheel 13 is directly pulled to rotate the valve body 1 along the outer wall of the fixed pipe 4. The telescopic rod 5 is stretched as the valve body 1 and the fixed pipe 4 rotate relative to each other, and the telescopic rods 5 on both sides of the hose 3 are close to each other and squeeze the hose 3, and finally the middle hose 3 is cut off. Due to the abutment between the elastic block 7 and the slot 8, the valve body 1 cannot rotate in the opposite direction, and the water pipe 2 is quickly cut off, which solves the problem that the traditional throttle valve can only be closed by turning the hand wheel 13 multiple times, but cannot quickly cut off the water flow.

Claims

1. A water supply and drainage flow limiting device for a building equipment automatic control system, comprising a valve body (1), wherein a valve core (11), a valve stem (12) and a hand wheel (13) are arranged inside the valve body (1). Features: The valve body (1) is annular in shape. Fixed pipes (4) are provided on both sides of the valve body (1). The valve body (1) is rotatably connected to the fixed pipes (4). A hose (3) is provided inside the valve body (1) and the fixed pipe (4). The water pipes (2) at both ends are directly connected to each other through the hose (3), so that the water flow in the water pipe (2) only passes through the inside of the hose (3). The valve body (1) is isolated from the water flow in the water pipe (2) through the hose (3).

2. A water supply and drainage current limiting device for a building equipment automatic control system according to claim 1, Features: The hose (3) is similar to a conventional fire hose.

3. A water supply and drainage current limiting device for a building equipment automatic control system according to claim 1, Features: The inner end of the fixed tube (4) is rotatably connected to the annular side wall of the valve body (1); the outer end of the fixed tube (4) is sleeved on the outside of the water pipe (2) and the hose (3); a thread is provided on the outer wall of the outer end of the fixed tube (4); the thickness of the outer wall of the fixed tube (4) covered with the threaded section gradually increases from the inside to the outside; an extrusion groove (41) is circumferentially provided at the threaded end of the fixed tube (4); the length direction of the extrusion groove (41) is parallel to the axial direction of the fixed tube (4); and a nut (42) is sleeved on the outer side of the fixed tube (4).

4. A water supply and drainage current limiting device for a building equipment automatic control system according to claim 1, Features: Two telescopic rods (5) are provided between adjacent side walls of the valve body (1) and the fixed tube (4). The telescopic rods (5) are symmetrically arranged along the axial direction of the hose (3). Both ends of the telescopic rods (5) are fixedly mounted with fixing blocks (6). The fixing blocks (6) are rotatably connected to the side walls of the valve body (1) and the fixed tube (4) on both sides.

5. A water supply and drainage current limiting device for a building equipment automatic control system according to claim 1, Features: An elastic clamp (7) is provided between the outer wall of the hose (3) and the annular inner wall of the valve body (1); one end of the elastic clamp (7) is fixedly connected to the side wall of the fixed tube (4); the other end of the elastic clamp (7) is pressed against the annular inner wall of the valve body (1) under the action of its own elastic force; a clamping groove (8) is provided on the annular inner wall of the valve body (1) at a position corresponding to the elastic clamp (7); the clamping groove (8) is adapted to the outer shape of the end of the elastic clamp (7).

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