Urban heating balance valve convenient to maintain

Abstract

The utility model discloses an urban heating balance valve convenient to maintain, and relates to the technical field of balance valves, the urban heating balance valve convenient to maintain comprises a water flowing pipe and a knob, a lower valve body is fixedly welded above the water flowing pipe, a guide groove is formed in the outer wall of the lower valve body, a limiting groove is formed in the tail end of the guide groove, an upper valve body is arranged at the bottom of the knob, and the upper valve body is connected with the knob. An inner connecting sleeve is integrally formed at the bottom of the upper valve body, an abutting table is integrally formed on the inner wall of the lower valve body, the outer diameter of the inner connecting sleeve is matched with the inner diameter of the abutting table, a limiting block is fixedly installed on the outer wall of the upper valve body, and the limiting block is matched with the guide groove and the limiting groove at the same time. According to the balance valve, the limiting block is connected with the limiting groove in a clamped mode, sealing is matched with the sealing ring, and further fixing is achieved through the elastic force of the abutting spring, so that the balance valve body can be rapidly disassembled even in narrow and small environments such as wall corners, and overhauling and maintaining work of the balance valve is simpler.

Description

Technical Field

[0001] This utility model relates to the field of balancing valve technology, specifically a city heating balancing valve that is easy to maintain. Background Technology

[0002] Urban central heating systems use balancing valves to dynamically regulate the flow rate in each branch of the pipe network to achieve uniform heat distribution. Existing heating balancing valves mainly include manual adjustment type, electric adjustment type, and self-regulating dynamic balancing type. Their core function is to control the cross-sectional area of ​​the flow channel through the cooperation structure between the valve core and the valve seat, thereby achieving flow balance.

[0003] However, existing balancing valves have many problems during long-term operation and maintenance. In particular, the core components of traditional balancing valves, such as valve core, seals, and actuators, are mostly integrated into one unit. When replacing them, the valve and pipeline connections (such as flange bolts or welded joints) need to be completely disassembled. This makes maintenance operations dependent on professional tools and time-consuming. When the valve core sealing surface needs to be replaced due to scale wear, the entire valve body needs to be removed to complete the maintenance of the valve body, which increases the maintenance time and affects the overall work efficiency.

[0004] Therefore, an easy-to-maintain urban heating balancing valve is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide an easy-to-maintain urban heating balancing valve to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides an easy-to-maintain urban heating balancing valve, including a water pipe and a knob. The valve is characterized by a lower valve body fixedly welded to the upper part of the water pipe, a guide groove on the outer wall of the lower valve body, a limit groove at the end of the guide groove, an upper valve body at the bottom of the knob, an inner sleeve integrally formed at the bottom of the upper valve body, a contact platform integrally formed on the inner wall of the lower valve body, the outer diameter of the inner sleeve matching the inner diameter of the contact platform, and a limit block fixedly installed on the outer wall of the upper valve body, the limit block matching both the guide groove and the limit groove.

[0007] Furthermore, the specific number of the guide groove and the limiting groove is two, and the two guide grooves and the two limiting grooves are distributed in a circumferential array on the outer wall of the lower valve body.

[0008] Furthermore, the specific number of the limiting blocks is also two, and the two limiting blocks are simultaneously adapted to the two guide grooves and the limiting grooves. In the initial state of the device, the two limiting blocks are respectively located inside the two limiting grooves.

[0009] Furthermore, a rotatable threaded sleeve is installed at the bottom of the inner wall of the upper valve body, and a threaded rod is threadedly connected to the inner wall of the threaded sleeve. The threaded sleeve is fixedly connected to the knob.

[0010] Furthermore, a flow-blocking valve is fixedly connected to the bottom of the threaded rod. The specific shape of the flow-blocking valve is a convex frustum. The top radius of the flow-blocking valve is the same as the inner wall radius of the upper valve body, and the bottom radius of the flow-blocking valve is the same as the radius of the inner sleeve. A flow-blocking shell is fixedly installed at the top edge of the flow-blocking valve.

[0011] Furthermore, a sealing ring is slidably fitted on the outer wall of the flow-blocking valve, and an abutting spring is fixedly connected between the sealing ring and the bottom of the outer wall of the upper valve body.

[0012] Furthermore, the bottom area of ​​the sealing ring is the same as the top area of ​​the contact platform.

[0013] Furthermore, a circular rod is fixedly connected to the top surface of the flow-blocking valve, and a circular sleeve is fixedly connected to the bottom surface of the inner wall of the upper valve body, with the circular rod slidably positioned inside the circular sleeve.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting a limit block and a limit groove to engage, combined with the sealing ring and the elastic force of the contact spring, the device can quickly disassemble the main body of the balance valve even in confined spaces such as corners, making the inspection and maintenance of the balance valve simpler. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model.

[0018] Figure 3 This is a top view of the structure of this utility model;

[0019] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure at point AA.

[0020] In the diagram: 1. Water pipe; 2. Lower valve body; 3. Upper valve body; 4. Knob; 5. Contact platform; 6. Inner sleeve; 7. Contact spring; 8. Sealing ring; 9. Flow control valve; 10. Guide groove; 11. Limiting groove; 12. Limiting block; 13. Threaded sleeve; 14. Threaded rod; 15. Circular sleeve; 16. Circular rod; 17. Flow control shell. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1

[0023] See Figure 1-4 A city heating balancing valve that is easy to maintain includes a water pipe 1 and a knob 4. A lower valve body 2 is fixedly welded to the upper part of the water pipe 1. A guide groove 10 is provided on the outer wall of the lower valve body 2. A limit groove 11 is provided at the end of the guide groove 10. An upper valve body 3 is provided at the bottom of the knob 4. An inner sleeve 6 is integrally formed at the bottom of the upper valve body 3. An abutment 5 is integrally formed on the inner wall of the lower valve body 2. The outer diameter of the inner sleeve 6 is adapted to the inner diameter of the abutment 5. A limit block 12 is fixedly installed on the outer wall of the upper valve body 3. The limit block 12 is adapted to both the guide groove 10 and the limit groove 11.

[0024] Furthermore, a sealing ring 8 is slidably sleeved on the outer wall of the flow control valve 9, and an abutment spring 7 is fixedly connected between the sealing ring 8 and the bottom of the outer wall of the upper valve body 3. The bottom area of ​​the sealing ring 8 is the same as the top area of ​​the abutment platform 5.

[0025] By setting the contact spring 7 and the sealing ring 8, the inner sleeve 6 drives the contact spring 7 and the sealing ring 8 to be inserted into the interior of the contact platform 5. After the two limiting blocks 12 are engaged in the limiting groove 11, the sealing ring 8 and the top surface of the contact platform 5 will abut against each other and compress the contact spring 7 simultaneously. Finally, the engagement of the limiting block 12 and the limiting groove 11 makes it impossible for the sealing ring 8 to move easily. The engagement of the limiting block 12 and the limiting groove 11 will be fixed by the elastic force of the contact spring 7, so that the limiting block 12 will not easily come out of the interior of the limiting groove 11 without human intervention.

[0026] Furthermore, a rotatable threaded sleeve 13 is installed at the bottom of the inner wall of the upper valve body 3. A threaded rod 14 is threadedly connected to the inner wall of the threaded sleeve 13. The threaded sleeve 13 is fixedly connected to the knob 4. A flow-blocking valve 9 is fixedly connected to the bottom of the threaded rod 14. The specific shape of the flow-blocking valve 9 is a convex frustum. The top radius of the flow-blocking valve 9 is the same as the inner wall radius of the upper valve body 3. The bottom radius of the flow-blocking valve 9 is the same as the radius of the inner sleeve 6. A flow-blocking shell 17 is fixedly installed at the top edge of the flow-blocking valve 9.

[0027] By setting the threaded sleeve 13 to be fixedly connected to the knob 4, the knob 4 can drive the threaded sleeve 13 to rotate. After the threaded sleeve 13 rotates, the threaded rod 14 threaded inside the threaded sleeve 13 will be pushed, thereby driving the flow control valve 9 to move and realize the sealing function.

[0028] In addition, a circular rod 16 is fixedly connected to the top surface of the flow control valve 9, and a circular sleeve 15 is fixedly connected to the bottom surface of the inner wall of the upper valve body 3. The circular rod 16 is slidably located inside the circular sleeve 15. By setting the circular rod 16 and the circular sleeve 15, and setting the circular rod 16 to be slidably located inside the circular sleeve 15, the threaded rod 14 cannot follow the rotation after the threaded sleeve 13 rotates, and can only move along the axial direction of the threaded rod 14.

[0029] It should be noted that there are two guide grooves 10 and two limit grooves 11. The two guide grooves 10 and the two limit grooves 11 are distributed in a circular array on the outer wall of the lower valve body 2. There are also two limit blocks 12. The two limit blocks 12 are adapted to the two guide grooves 10 and the limit grooves 11. In the initial state of the device, the two limit blocks 12 are respectively located inside the two limit grooves 11.

[0030] In practice, most existing balancing valves are installed using flanges and threaded connections, which makes maintenance and repair of balancing valves very difficult. In addition, since most balancing valves are installed in pipelines near walls, the presence of flanges and threads makes maintenance of balancing valves even more difficult.

[0031] In this application, when the user needs to inspect and maintain the balance valve, the valve body around the balance valve must first be closed. Then, the user needs to press down the upper valve body 3 or the knob 4 to disengage the limit block 12 from the limit groove 11. At the same time, rotate the upper valve body 3 or the knob 4 counterclockwise to move the limit block 12 along the trajectory of the guide groove 10 until the limit block 12 can move upward. Then, the user can remove the flow control valve 9 and the components above the flow control valve 9 and perform maintenance on them.

[0032] During the process, the user only needs to perform three actions: pressing down, rotating, and finally pulling up to complete the disassembly of the valve body, making it easier for the user to inspect and repair the balance valve.

[0033] By setting the limit block 12 and the limit groove 11 to engage, and with the sealing ring 8 and the spring force of the contact spring 7 to further fix it, the device can quickly disassemble the main body of the balance valve even in narrow environments such as corners, making the inspection and maintenance of the balance valve simpler.

[0034] Working principle: Most existing balancing valves are installed using flanges and threaded connections, which makes maintenance and repair of balancing valves very difficult. In addition, since most balancing valves are installed in pipelines near walls, the presence of flanges and threads makes maintenance of balancing valves even more difficult.

[0035] In this application, when the user needs to inspect and maintain the balance valve, the valve body around the balance valve must first be closed. Then, the user needs to press down the upper valve body 3 or the knob 4 to disengage the limit block 12 from the limit groove 11. At the same time, rotate the upper valve body 3 or the knob 4 counterclockwise to move the limit block 12 along the trajectory of the guide groove 10 until the limit block 12 can move upward. Then, the user can remove the flow control valve 9 and the components above the flow control valve 9 and perform maintenance on them.

[0036] During the process, the user only needs to perform three actions: pressing down, rotating, and finally pulling up to complete the disassembly of the valve body, making it easier for the user to inspect and repair the balance valve.

[0037] By setting the limit block 12 and the limit groove 11 to engage, and with the sealing ring 8 and the spring force of the contact spring 7 to further fix it, the device can quickly disassemble the main body of the balance valve even in narrow environments such as corners, making the inspection and maintenance of the balance valve simpler.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A city heating balancing valve that is easy to maintain, comprising a water pipe (1) and a knob (4), characterized in that, A lower valve body (2) is fixedly welded to the top of the water pipe (1). A guide groove (10) is provided on the outer wall of the lower valve body (2). A limit groove (11) is provided at the end of the guide groove (10). An upper valve body (3) is provided at the bottom of the knob (4). An inner sleeve (6) is integrally formed at the bottom of the upper valve body (3). A contact platform (5) is integrally formed on the inner wall of the lower valve body (2). The outer diameter of the inner sleeve (6) is compatible with the inner diameter of the contact platform (5). A limit block (12) is fixedly installed on the outer wall of the upper valve body (3). The limit block (12) is compatible with both the guide groove (10) and the limit groove (11).

2. The easy-to-maintain urban heating balancing valve as described in claim 1, characterized in that: The specific number of the guide groove (10) and the limiting groove (11) is two. The two guide grooves (10) and the two limiting grooves (11) are distributed in a circular array on the outer wall of the lower valve body (2).

3. The easy-to-maintain urban heating balancing valve as described in claim 2, characterized in that: The specific number of the limiting blocks (12) is also two. The two limiting blocks (12) are adapted to the two guide grooves (10) and the limiting grooves (11) at the same time. In the initial state of the device, the two limiting blocks (12) are respectively located inside the two limiting grooves (11).

4. The easy-to-maintain urban heating balancing valve as described in claim 3, characterized in that: The bottom of the inner wall of the upper valve body (3) is equipped with a rotatable threaded sleeve (13), and a threaded rod (14) is threadedly connected to the inner wall of the threaded sleeve (13). The threaded sleeve (13) is fixedly connected to the knob (4).

5. The easy-to-maintain urban heating balancing valve as described in claim 4, characterized in that: A flow-blocking valve (9) is fixedly connected to the bottom of the threaded rod (14). The specific shape of the flow-blocking valve (9) is a convex frustum. The top radius of the flow-blocking valve (9) is the same as the inner wall radius of the upper valve body (3). The bottom radius of the flow-blocking valve (9) is the same as the radius of the inner sleeve (6). A flow-blocking shell (17) is fixedly installed at the top edge of the flow-blocking valve (9).

6. The easy-to-maintain urban heating balancing valve as described in claim 5, characterized in that: A sealing ring (8) is slidably sleeved on the outer wall of the flow control valve (9), and an abutment spring (7) is fixedly connected between the sealing ring (8) and the bottom of the outer wall of the upper valve body (3).

7. A city heating balancing valve that is easy to maintain as described in claim 6, characterized in that: The bottom area of ​​the sealing ring (8) is the same as the top area of ​​the contact platform (5).

8. The easy-to-maintain urban heating balancing valve as described in claim 7, characterized in that: A circular rod (16) is fixedly connected to the top surface of the flow-blocking valve (9), and a circular sleeve (15) is fixedly connected to the bottom surface of the inner wall of the upper valve body (3). The circular rod (16) is slidably located inside the circular sleeve (15).

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