State protection device for locking valve of heat supply pipe network

Abstract

The utility model discloses a state protection device for a locking valve of a heat supply network, which relates to the field of central heating systems and is provided with a sleeve-shaped connecting sleeve matched with a valve body at a valve rod of the locking valve, a closed upper cover is arranged on the upper side of the connecting sleeve, and a closed locking structure for quickly locking the connecting sleeve and the valve body of the locking valve is arranged on the connecting sleeve. When the locking valve is used, after the working state of the locking valve is adjusted, the connecting sleeve is sleeved on the valve body at the position of the valve rod of the locking valve, and the connecting sleeve and the valve body of the locking valve are quickly locked and fixed by using the closed locking structure; according to the utility model, the valve rod for adjusting the working state of the locking valve and the connecting seat are sealed and protected, so that the valve rod and the connecting seat are not exposed outside, and a common heating user does not adopt a violent means to damage a protection device to adjust the heating flow; the locking valve and the adjacent pipelines can be preliminarily protected from being damaged, and heat of a heat supply pipe network is evenly distributed.

Description

Technical Field

[0001] The utility model relates to the field of central heating systems, and particularly to a state protection device for a locking valve of a heat supply pipe network. Background Art

[0002] In a household metering two-pipe heat supply pipe network system, a locking valve is installed on the main water inlet pipe of each household. On the basis of controlling the start and stop functions, the flow value of users can be manually set and locked, which plays a role in balancing the heat distribution of the heat network and controlling the overall temperature of each household, preventing waste of heat energy and achieving the purpose of energy conservation. Most of the existing locking valves are ball valve structures without operating handles. The upper end of the valve stem of the locking valve is provided with a connecting seat that cooperates with the operating handle. The connecting seat is usually quadrilateral, hexagonal or a cylinder with a special-shaped groove at the top. A matching operating handle is required to quickly complete closing, opening or flow adjustment. During the heating process, some users privately adjust the opening of the locking valve with tools due to reasons such as long-term window ventilation or personal feeling of low temperature, which will lead to uneven heat distribution in the heat supply pipe network and affect the room temperature of other users. Since the tools used cannot cooperate with the connecting seat at the upper end of the valve stem, it is easy to damage the locking valve and adjacent pipelines. Summary of the Invention

[0003] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art and provide a state protection device for a locking valve of a heat supply pipe network that can seal the connecting seat at the upper end of the valve stem of the locking valve to prevent users from privately adjusting the opening of the locking valve.

[0004] The technical solution of the utility model is as follows:

[0005] A state protection device for a locking valve of a heat supply pipe network, characterized in that it is provided with a sleeve-shaped connecting sleeve that cooperates with the valve body at the valve stem of the locking valve. The upper side of the connecting sleeve is provided with a closed upper cover, and the connecting sleeve is provided with a closed locking structure for quickly locking it with the valve body of the locking valve.

[0006] The utility model is further improved. The closed locking structure is as follows: at least two locking seats are evenly distributed circumferentially on the outer side of the connecting sleeve. The middle of the locking seat is provided with a locking slideway with an open lower end. A locking slide plate that can slide freely up and down is arranged in the locking slideway. The inner side surface of the locking slide plate is an extrusion surface that inclines inwards from top to bottom; a locking chute is arranged on the inner side wall of the locking slideway, and a locking plate that can slide in and out is arranged in the locking chute. The outer side surface of the locking plate is a pressing surface that abuts and cooperates with the extrusion surface.

[0007] The utility model is further improved. The middle of the outer side wall of the locking slideway is provided with a control slideway with an open lower end. A control slider connected to the outer side of the locking slide plate is arranged in the control slideway, and a tool connection hole is arranged on the control slider.

[0008] The present utility model is further improved. A limiting projection is provided at the lower end of the control slideway. The limiting projection can prevent the control slider from sliding down and disengaging from the control slideway due to gravity.

[0009] The present utility model is further improved. The locking plate includes a valve body fitting plate that can slide in and out within the locking chute and a radial limiting plate that can slide in and out within the locking slideway. The width of the radial limiting plate is greater than the width of the locking chute. The outer side of the valve body fitting plate is connected to the inner side of the radial limiting plate. The outer side surface of the radial limiting plate is the pressing surface. A limiting projection is provided at the lower end of the locking chute. The radial limiting plate can prevent the locking plate from disengaging from the inner side of the locking chute, and the limiting projection can prevent the valve body fitting plate from sliding down and disengaging from the locking chute due to gravity, increasing stability.

[0010] The present utility model is further improved. Anti-slip teeth are provided on the inner side surface of the locking plate. The friction is increased and the locking is more firm.

[0011] The present utility model is further improved. A travel switch and a temperature sensor are provided at the relative position between the lower side of the closed upper cover and the connecting seat at the upper end of the locking valve. A control circuit board is provided above the closed upper cover. The travel switch and the temperature sensor are connected to the control circuit board, and an alarm device is connected to the control circuit board.

[0012] The present utility model is further improved. A sealed mounting box is provided above the closed upper cover. The control circuit board and the alarm device are arranged in the sealed mounting box. A battery cavity is provided on the sealed mounting box, and a battery for supplying power to the control circuit board, the alarm device, etc. is installed in the battery cavity.

[0013] When the present utility model is in use, after adjusting the working state of the locking valve, the connecting sleeve is sleeved on the valve body at the valve stem of the locking valve, and the connecting sleeve and the valve body of the locking valve are quickly locked and fixed by using the closed locking structure. The present utility model provides closed protection for the valve stem and the connecting seat for adjusting the working state of the locking valve, so that they are not exposed outside. Ordinary heating users will not take violent means to damage the protection device and then adjust the heating flow rate. It can initially protect the locking valve and the adjacent pipelines from damage and make the heat distribution of the heat supply network uniform. Due to the ingenious setting of the closed locking structure, it has the advantages of compact structure, high integrity, simple and convenient disassembly and assembly, not easy to disassemble without special tools, and avoiding the malicious disassembly by some minors. Due to the setting of the alarm device, when it is damaged, an alarm signal is sent in time, which can prevent heating users from privately adjusting the working state of the locking valve in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional structure view of the present invention;

[0015] Figure 2 is a schematic three-dimensional structure view of the present invention;

[0016] Figure 3 is the front view structural schematic diagram of the present invention after removing the locking slide plate and the locking plate;

[0017] Figure 4 is Figure 3 the A-A sectional view of;

[0018] Figure 5 is the three-dimensional structural schematic diagram of the present invention after removing the locking slide plate and the locking plate;

[0019] Figure 6 is the three-dimensional structural schematic diagram of the locking plate in the present invention;

[0020] Figure 7 is the three-dimensional structural schematic diagram of the locking slide plate in the present invention;

[0021] Figure 8 is the three-dimensional structural schematic diagram of the present invention in the using state. Specific embodiments

[0022] A state protection device for a heat supply pipe network lock valve, as Figures 1-6 shown, is provided with a sleeve-shaped connecting sleeve 9 that cooperates with the valve body at the valve stem of the lock valve. The outer shape of the valve body at the valve stem of the lock valve is cylindrical, so the connecting sleeve 9 is in the shape of a cylindrical sleeve. A closed upper cover 6 is provided on the upper side of the connecting sleeve 9, and the closed upper cover 6 is fixedly connected or integrally formed with the upper end of the connecting sleeve 9. A closed locking structure for quickly locking the connecting sleeve to the lock valve body is provided on the connecting sleeve 9. The closed locking structure can be a locking bolt arranged radially on the connecting sleeve. After the connecting sleeve is sleeved on the valve body at the valve stem of the lock valve, the locking bolt is screwed, and the front end of the locking bolt abuts against the valve body of the lock valve to lock the connecting sleeve on the valve body.

[0023] Although the above-mentioned closed locking structure is simple in structure, it has defects such as large occupied space, inconvenient operation when the operation space is small, and easy disassembly. Therefore, in this embodiment, the closed locking structure is further improved. The closed locking structure is as follows: Four rectangular locking seats 10 are evenly distributed circumferentially on the outer side of the connecting sleeve 9. During use, only two opposite ones are selected for locking operation, which is applicable to installation in a narrow space. The locking seat 10 is integrally formed with the connecting sleeve, and the connecting sleeve 9 in contact with the locking seat 10 becomes a part of the inner side of the locking seat. A locking slideway 12 with an open lower end is provided in the middle of the locking seat 10 in the inner and outer directions. A locking slide plate 8 that can slide freely up and down is provided in the locking slideway 12. The inner side surface of the locking slide plate 8 is an extrusion surface 18 that slopes inward from top to bottom; A locking chute 11 communicating with the inner side of the connecting sleeve 9 is provided on the inner side wall of the locking slideway 12. A locking plate 7 that can slide inward and outward is provided in the locking chute 11. The outer side surface of the locking plate 7 is a pressing surface 22 that slopes inward from top to bottom and is in abutting cooperation with the extrusion surface 18; The middle of the outer side wall (in the left-right direction) of the locking slideway 12 is provided with a control slideway 13 with an open lower end and communicating with the outside of the locking seat 10. The width of the control slideway 13 (the dimension in the left-right direction) is smaller than the width of the locking slide plate 8. A control slider 17 connected to the outer side of the locking slide plate 8 is provided in the control slideway 13. A tool connection hole 16 is provided on the control slider 17; From Figure 7As can be seen, the control slider 17 is rectangular, and the tool connection hole 16 is a rectangular groove with an open upper end. On the left and right side walls at the lower end of the control slideway 13, limiting protrusions 14 are respectively provided; the limiting protrusions 14 can prevent the control slider 17 from sliding down and disengaging from the control slideway 13 due to gravity; the limiting protrusions 14 are triangular, and on the outer side wall of the locking slideway 12 behind the limiting protrusions 14, an extrusion buffer notch is provided. The front side of the limiting protrusion is the control slideway. The control slider can squeeze the limiting protrusion from the lower side of the control slideway and squeeze into the control slideway upward, or can move downward in the control slideway, squeeze the limiting protrusion and disengage from the control slideway, which is convenient for installation. The locking plate 7 includes a valve body fitting plate 19 that can slide in and out within the locking chute 11 and a radial limiting plate 20 that can slide in and out within the locking slideway 12. The valve body fitting plate 19 slides inward and can protrude from the inner side wall of the connecting sleeve 9. The width of the radial limiting plate 20 is greater than the width of the locking chute 11. The sum of the minimum thickness (the dimension in the inner and outer direction) of the radial limiting plate 20 and the valve body fitting plate 19 is greater than the thickness of the locking slideway 12. The outer side of the valve body fitting plate 19 is connected to the inner side of the radial limiting plate 20, and the two can be integrally formed. The outer side surface of the radial limiting plate 20 is a pressing surface 22; the lower end of the locking chute 11 is open, and on the left and right side walls at the lower end of the locking chute 11, locking limiting protrusions 15 are provided; the locking limiting protrusions 15 are triangular, and on the inner side wall of the locking slideway 12 behind the locking limiting protrusions 15, an extrusion buffer notch is provided. The front side of the locking limiting protrusion 15 is the locking chute 11. The valve body fitting plate 19 can squeeze the locking limiting protrusion from the lower side of the locking chute 11 and squeeze into the locking chute 11 upward, or can squeeze the locking limiting protrusion downward within the locking chute and disengage from the locking chute. The design of the radial limiting plate 20 can prevent the locking plate 7 from radially disengaging from the inner side of the locking chute 11, and the locking limiting protrusion 15 can prevent the valve body fitting plate 19 from sliding down and disengaging from the locking chute due to gravity. After the locking slide plate and the locking plate are assembled into the locking slideway, the locking slide plate and the locking plate will not easily disengage, and the overall stability of the product is better, which is convenient for organization, handling and carrying. When in use, press or push up the sliding locking slide plate, and the valve body fitting plate can be pressed to protrude from the inner side wall of the connecting sleeve and press tightly on the outer side of the locking valve body. The required space is small. When disassembling, the rectangular hook-shaped pull rod is connected with the rectangular groove-shaped tool connection hole, and by pulling down the sliding locking slide plate, it can be unlocked; the disassembly and assembly are simple and convenient, and special tools are required. The size of the rectangular groove-shaped tool connection hole is small, and the strength requirement for the rectangular hook-shaped pull rod cooperating with it is high, which does not match the common utensils in life, further preventing human disassembly and damage.

[0024] In the present utility model, the side close to the axis of the locking seat is the inner side, and the side far from the axis of the locking seat is the outer side.

[0025] For further improvement, anti-slip teeth 21 are provided on the inner side of the locking plate (valve body fitting plate); the friction is increased and the locking is more secure. A travel switch 4 and a temperature sensor 5 that cooperate with the connecting seat at the upper end of the lock valve are provided on the lower side of the closed upper cover 6. A control circuit board 2 is provided above the closed upper cover. The travel switch 4 and the temperature sensor 5 are connected to the control circuit board 2, and an alarm device is connected to the control circuit board 2; a sealed mounting box 3 is provided above the closed upper cover 6. The control circuit board 2 and the alarm device are arranged in the sealed mounting box 3. A battery cavity is provided on the sealed mounting box 3, and a battery 1 for supplying power to the control circuit board, the alarm device, etc. is installed in the battery cavity. The alarm device is a buzzer and a wireless signal transceiver device; when the control circuit board detects a change in the state of the travel switch or a rapid change in the temperature measured by the temperature sensor, it can control the buzzer to work and emit an alarm signal to drive away people who damage the protection device, and at the same time send a signal to the remote monitoring terminal, so that people can be sent to the scene for handling in time.

[0026] The usage state of the present utility model is as Figure 8 shown. After adjusting the working state of the lock valve, the connecting sleeve is sleeved on the valve body at the valve stem of the lock valve, and the connecting sleeve and the valve body of the lock valve are quickly locked and fixed by using the closed locking structure. The present utility model provides closed protection for the valve stem and the connecting seat for adjusting the working state of the lock valve, so that they are not exposed. Ordinary heating users will not take violent means to damage the protection device and then adjust the heating flow rate; it can initially protect the lock valve and the adjacent pipelines from damage and make the heat distribution of the heat supply network uniform. Due to the ingenious setting of the closed locking structure, it has the advantages of compact structure, high integrity, simple and convenient disassembly and assembly, not easy to disassemble without special tools, and avoiding the malicious disassembly of some minors. Due to the setting of the alarm device, when it is damaged, an alarm signal is sent in time, which can prevent heating users from privately adjusting the working state of the lock valve in time.

Claims

1. A heating network lock valve state protection device, characterized in that: A sleeve-shaped connecting sleeve is provided which matches the valve body at the valve stem of the locking valve, a closed upper cover is provided on the upper side of the connecting sleeve, and a closed locking structure for quickly locking the connecting sleeve with the valve body of the locking valve is provided on the connecting sleeve, wherein the closed locking structure is as follows: at least two locking seats are evenly distributed circumferentially on the outer side of the connecting sleeve, a locking slideway with an open lower end is provided in the middle of the locking seat, a locking slideway which can slide freely up and down is provided in the locking slideway, and the inner side surface of the locking slideway is an extrusion surface which is inclined inward from top to bottom; a locking slideway is provided on the inner side wall of the locking slideway, a locking plate which can slide inward and outward is provided in the locking slideway, and the outer side surface of the locking plate is a pressing surface which is close to and matched with the extrusion surface.

2. The heating pipe network lock valve state protection device according to claim 1, characterized in that: A control slideway with an open lower end is provided in the middle of the outer side wall of the locking slideway, a control slide block connected to the outer side of the locking slide block is provided in the control slideway, and a tool connection hole is provided on the control slide block.

3. The heating pipe network lock valve state protection device according to claim 2, characterized in that: A limiting protrusion is provided at the lower end of the control slide.

4. The heating pipe network lock valve state protection device according to claim 1, characterized in that: The locking plate includes a valve body fitting plate that can slide inward and outward in the locking groove and a radial limit plate that is located in the locking slide and can slide inward and outward. The width of the radial limit plate is greater than the width of the locking groove. The outer side of the valve body fitting plate is connected to the inner side of the radial limit plate, and the outer side surface of the radial limit plate is a pressing surface. A limiting protrusion is provided on the lower end of the locking groove.

5. The heating pipe network lock valve state protection device according to claim 1, characterized in that: Anti-slip teeth are arranged on the inner side surface of the locking plate.

6. The heating pipe network lock valve state protection device according to any one of claims 1 to 5, characterized in that: A travel switch and a temperature sensor are provided at the lower side of the closed upper cover and at a position opposite to the connection seat at the upper end of the locking valve. A control circuit board is provided above the closed upper cover. The travel switch and the temperature sensor are connected to the control circuit board, and an alarm device is connected to the control circuit board.

7. The heating pipe network lock valve state protection device according to claim 6, characterized in that: A sealed installation box is arranged above the closed upper cover, the control circuit board and the alarm device are arranged in the sealed installation box, a battery cavity is arranged on the sealed installation box, and a battery for supplying power to the control circuit board and the alarm device is installed in the battery cavity.

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