Flow regulating balancing valve

Abstract

This utility model relates to the field of balancing valves, specifically a flow regulating balancing valve, comprising a valve body, a sealing cover fixedly installed on the top of the valve body, an installation cylinder fixedly connected to the top of the sealing cover, a connecting cylinder fixedly installed on the top of the installation cylinder, a valve core provided in the inner cavity of the valve body, a valve stem fixedly connected to the top of the valve core, the top end of the valve stem sequentially penetrating the valve body, the sealing cover, and the installation cylinder and extending into the interior of the installation cylinder, a threaded sleeve fixedly installed on the top end of the valve stem, the surface of the threaded sleeve slidingly connected to the inner wall of the installation cylinder, and a threaded rod threadedly connected to the inner cavity of the threaded sleeve. In this utility model, when the flow rate is adjusted to the target value, releasing the rotating disc releases the elastic potential energy of the spring telescopic rod, causing the locking pin and locking block to move upward through the fixing ring, disengaging the locking block from the locking groove, thus locking the threaded rod, preventing the valve core from shifting due to external interference, and ensuring stable flow.

Description

Technical Field

[0001] This utility model relates to the field of balancing valves, specifically to a flow regulating balancing valve. Background Technology

[0002] The flow balancing valve, also known as a self-regulating flow control valve, is an intuitive and simple flow regulation and control device. It is suitable for the renovation system of centralized heating pipe network in residential areas. The flow balancing valve transforms the network regulation work into a simple flow distribution, effectively solving the problem of hydraulic imbalance in the pipe network.

[0003] A search revealed a utility model patent with publication number CN220749083U, which specifically discloses a flow balancing valve structure. The structure includes a balancing valve body, a multi-hole flow valve core fixedly connected to the lower end face of the valve stem, a secondary flow valve core fixedly connected to the other end of the multi-hole flow valve core, and a flow blocking valve core fixedly connected to the other end of the secondary flow valve core. In this utility model, the structure composed of a valve seat and a sealing sleeve effectively seals the area around the valve core, effectively enclosing it and solving the problem of fluid entering the gap between the valve core and the valve body and damaging the valve stem. By controlling the number of through holes through which fluid can flow, the flow balancing valve structure can adjust the flow rate, solving the problem that flow balancing valves only control the on / off state and overflow. The aforementioned patent cannot protect the valve core from accidental contact. During use, the valve core is easily moved due to external factors or accidental human contact, which can cause changes in flow rate.

[0004] Therefore, it is necessary to invent a flow regulating and balancing valve to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a flow regulating and balancing valve that, through the action of a spring telescopic rod, a locking rod, and a locking groove, can control the locking relationship between the locking pin and the threaded rod, thereby solving the problem in the prior art that the valve core cannot be protected against accidental contact, and that the valve core is prone to movement due to external factors or human error during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flow regulating and balancing valve, comprising a valve body, a sealing cover fixedly installed on the top of the valve body, an installation cylinder fixedly connected to the top of the sealing cover, a connecting cylinder fixedly installed on the top of the installation cylinder, a valve core provided in the inner cavity of the valve body, a valve stem fixedly connected to the top of the valve core, the top end of the valve stem sequentially penetrating the valve body, the sealing cover and the installation cylinder and extending into the interior of the installation cylinder, a threaded sleeve fixedly installed on the top end of the valve stem, the surface of the threaded sleeve slidingly connected to the inner wall of the installation cylinder, a threaded rod threadedly connected to the inner cavity of the threaded sleeve, the top end of the threaded rod sequentially penetrating the installation cylinder and the connecting cylinder and extending into the interior of the connecting cylinder, a retaining post penetrating the top of the connecting cylinder, a rotating disk fixedly connected to the top of the retaining post, a retaining block fixedly connected to the bottom of the retaining post, and a retaining groove for cooperating with the retaining block being opened on the upper part of the threaded rod.

[0007] Preferably, a rotating ring is rotatably connected to the bottom of the inner wall of the connecting cylinder, and spring telescopic rods are fixedly connected to both sides of the top of the rotating ring.

[0008] Preferably, a fixing ring is fixedly connected between the top ends of the two spring telescopic rods, and the axis of the fixing ring is fixedly connected to the outer surface of the locking post.

[0009] Preferably, the inner wall of the valve body is provided with a first sealing ring that cooperates with the valve stem, and the bottom of the inner wall of the mounting cylinder is provided with a second sealing ring that cooperates with the valve stem.

[0010] Preferably, a filter screen is installed at an angle in the lower flow channel of the valve body, and a drain valve is fixedly installed at the lower part of the valve body and below the filter screen.

[0011] Preferably, flanges are fixedly installed on both sides of the valve body, and multiple mounting holes are provided on the flanges in a circular array.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. When it is necessary to adjust the fluid flow rate, first press down on the rotating disc to move the locking pin and locking block down synchronously until the locking block is inserted into the slot on the threaded rod; then rotate the rotating disc, which drives the threaded rod to rotate through the transmission of the locking pin and locking block. The threaded rod and the threaded sleeve engage through the threads, converting the rotational motion into the linear motion of the threaded sleeve; the threaded sleeve drives the valve stem and valve core to rise and fall synchronously. By changing the gap between the valve core and the internal flow channel of the valve body, the fluid flow rate is adjusted. When the flow rate is adjusted to the target value, release the rotating disc. The spring telescopic rod releases its elastic potential energy, which drives the locking pin and locking block to move up through the fixing ring, causing the locking block to disengage from the slot and locking the threaded rod. This prevents the valve core from shifting due to external interference and ensures stable flow rate. 2. When fluid flows through the valve body, the inclined filter screen in the lower channel can intercept impurities in the fluid. The impurities accumulate towards the lower end of the filter screen due to gravity. By periodically opening the drain valve at the bottom of the valve body, the accumulated impurities can be discharged without disassembling the valve, thus reducing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the valve body of this utility model; Figure 3 This is a cross-sectional structural diagram of the connecting cylinder of this utility model; Figure 4 This is a schematic diagram of the threaded rod of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Valve body; 2. Sealing cover; 3. Mounting sleeve; 4. Connecting sleeve; 5. Valve core; 6. Valve stem; 7. Threaded sleeve; 8. Threaded rod; 9. Locking pin; 10. Rotating disc; 11. Locking block; 12. Locking groove; 13. Rotating ring; 14. Spring telescopic rod; 15. Fixed ring; 16. First sealing ring; 17. Second sealing ring; 18. Filter screen; 19. Drain valve; 20. Flange; 21. Mounting hole. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1-4The flow regulating and balancing valve shown includes a valve body 1, a sealing cover 2 fixedly installed on the top of the valve body 1, an installation cylinder 3 fixedly connected to the top of the sealing cover 2, a connecting cylinder 4 fixedly installed on the top of the installation cylinder 3, a valve core 5 provided in the inner cavity of the valve body 1, a valve stem 6 fixedly connected to the top of the valve core 5, the top end of the valve stem 6 passing through the valve body 1, the sealing cover 2 and the installation cylinder 3 in sequence and extending into the interior of the installation cylinder 3, a threaded sleeve 7 fixedly installed on the top end of the valve stem 6, the surface of the threaded sleeve 7 slidingly connected to the inner wall of the installation cylinder 3, a threaded rod 8 threadedly connected to the inner cavity of the threaded sleeve 7, the inner cavity of the threaded sleeve 7 having a thread for cooperating with the threaded rod 8, the top end of the threaded rod 8 passing through the installation cylinder 3 and the connecting cylinder 4 in sequence and extending into the interior of the connecting cylinder 4, a retaining post 9 passing through the top of the connecting cylinder 4, a rotating disk 10 fixedly connected to the top of the retaining post 9, a retaining block 11 fixedly connected to the bottom of the retaining post 9, and a retaining groove 12 for cooperating with the retaining block 11 on the upper part of the threaded rod 8; Both the card slot 12 and the card block are rectangular and fit together. A rotating ring 13 is rotatably connected to the bottom of the inner wall of the connecting cylinder 4, and spring telescopic rods 14 are fixedly connected to both sides of the top of the rotating ring 13. A retaining ring 15 is fixedly connected between the top ends of the two spring telescopic rods 14, and the axis of the retaining ring 15 is fixedly connected to the outer surface of the locking post 9. The inner wall of the valve body 1 is provided with a first sealing ring 16 that cooperates with the valve stem 6, and the bottom of the inner wall of the mounting cylinder 3 is provided with a second sealing ring 17 that cooperates with the valve stem 6. A filter screen 18 is installed at an angle in the lower flow channel of the valve body 1, and a drain valve 19 is fixedly installed at the lower part of the valve body 1 and below the filter screen 18. When the fluid flows through the valve body 1, the inclined filter screen 18 in the lower channel can intercept impurities in the fluid. The impurities accumulate towards the lower end of the filter screen 18 due to gravity. The accumulated impurities can be discharged by periodically opening the drain valve 19 at the bottom of the valve body 1 without disassembling the valve, thus reducing maintenance costs. Flanges 20 are fixedly installed on both sides of the valve body 1. Multiple mounting holes 21 are opened in a ring array on the flanges 20. The flanges 20 on both sides of the valve body 1 are used to connect to external pipelines. Bolts are inserted through the mounting holes 21 and tightened to complete the fixed connection between the valve and the pipeline. The first sealing ring 16 on the inner wall of the valve body 1 and the second sealing ring 17 on the inner wall of the mounting cylinder 3 can respectively seal the mating gaps between the valve stem 6 and the valve body 1, and between the valve stem 6 and the mounting cylinder 3, to prevent fluid leakage.

[0018] The working principle of this utility model is as follows: When it is necessary to adjust the fluid flow rate, first press down on the rotating disk 10, which will drive the locking pin 9 and the locking block 11 to move down synchronously until the locking block 11 is inserted into the slot 12 on the threaded rod 8. At this time, the spring telescopic rod 14 is compressed and stores elastic potential energy. Then, rotate the rotating disk 10, which will drive the threaded rod 8 to rotate through the transmission of the locking pin 9 and the locking block 11. The threaded rod 8 and the threaded sleeve 7 are engaged by the thread, which converts the rotational motion into the linear motion of the threaded sleeve 7. The threaded sleeve 7 drives the valve stem 6 and the valve core 5 to rise and fall synchronously. By changing the gap between the valve core 5 and the internal flow channel of the valve body 1, the fluid flow rate can be adjusted. Once the flow rate is adjusted to the target value, the rotating disc 10 is released, and the spring telescopic rod 14 releases its elastic potential energy. This energy, through the fixed ring 15, causes the locking pin 9 and the locking block 11 to move upward, disengaging the locking block 11 from the slot 12 and locking the threaded rod 8. This prevents the valve core 5 from shifting due to external interference and ensures stable flow.

[0019] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A flow regulating balanced valve comprising a valve body (1), characterized in that: A sealing cap (2) is fixedly installed on the top of the valve body (1). An installation cylinder (3) is fixedly connected to the top of the sealing cap (2). A connecting cylinder (4) is fixedly installed on the top of the installation cylinder (3). A valve core (5) is provided in the inner cavity of the valve body (1). A valve stem (6) is fixedly connected to the top of the valve core (5). The top end of the valve stem (6) passes through the valve body (1), the sealing cap (2), and the installation cylinder (3) in sequence and extends into the interior of the installation cylinder (3). A threaded sleeve (7) is fixedly installed on the top end of the valve stem (6). The surface is slidably connected to the inner wall of the mounting cylinder (3). The inner cavity of the threaded sleeve (7) is threadedly connected to a threaded rod (8). The top end of the threaded rod (8) passes through the mounting cylinder (3) and the connecting cylinder (4) in sequence and extends into the interior of the connecting cylinder (4). The top of the connecting cylinder (4) is connected to a locking post (9). The top of the locking post (9) is fixedly connected to a rotating disk (10). The bottom of the locking post (9) is fixedly connected to a locking block (11). The upper part of the threaded rod (8) is provided with a locking groove (12) that cooperates with the locking block (11).

2. A flow regulating balanced valve according to claim 1, characterized in that: A rotating ring (13) is rotatably connected to the bottom of the inner wall of the connecting cylinder (4), and spring telescopic rods (14) are fixedly connected to both sides of the top of the rotating ring (13).

3. A flow regulating balanced valve according to claim 2, wherein: A fixing ring (15) is fixedly connected between the top ends of the two spring telescopic rods (14), and the axis of the fixing ring (15) is fixedly connected to the outer surface of the locking post (9).

4. The flow regulating balanced valve of claim 1, wherein: The inner wall of the valve body (1) is provided with a first sealing ring (16) that works with the valve stem (6), and the bottom of the inner wall of the mounting cylinder (3) is provided with a second sealing ring (17) that works with the valve stem (6).

5. The flow regulating balanced valve according to claim 1, wherein: A filter screen (18) is installed at an angle in the lower flow channel of the valve body (1), and a drain valve (19) is fixedly installed at the lower part of the valve body (1) and below the filter screen (18).

6. A flow regulating balanced valve according to claim 1, wherein: Flanges (20) are fixedly installed on both sides of the valve body (1), and multiple mounting holes (21) are arranged in a ring array on the flanges (20).

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