Flow stabilizing structure of heating user heat supply flow regulating valve

Abstract

A flow stabilizing structure of a heat supply flow regulating valve for heating users relates to the field of central heating systems and is provided with a Y-shaped valve body, the valve body comprises a connecting main body and a valve core mounting body, the valve core mounting body is arranged on the upper portion of the connecting main body in a rightward inclined mode from bottom to top, a valve core mounting seat is arranged in the lower portion of the valve core mounting body, and a fixed valve plate is arranged on the valve core mounting seat. A fixed overflowing hole is formed in the fixed valve plate; a valve cover is arranged at the upper end of the valve element mounting body, a valve rod is arranged on the valve cover, an adjusting valve plate is arranged at the lower end of the valve rod, and an adjusting overflowing hole is formed in the adjusting valve plate; a flow stabilizing opening is formed in the right side of the valve element installation body, a flow stabilizing cover is sleeved on the valve rod, a pressure sensing diaphragm is arranged on the upper side of the flow stabilizing cover, a flow stabilizing pressure spring is sleeved on the valve rod between the flow stabilizing cover and the adjusting valve plate, a pressure feedback cavity is formed between the pressure sensing diaphragm and the valve cover, and a pressure feedback hole for communicating the water inlet with the pressure feedback cavity is formed in the side wall of the valve element installation body. The device has the advantages of simple structure, low cost, small longitudinal size, low requirement on installation space and the like.

Description

Technical Field

[0001] The utility model relates to the field of centralized heating systems, in particular to a flow stabilizing structure of a heating flow regulating valve for heating users. Background Art

[0002] In a centralized heating system, the heating network is usually connected to the heating pipes of heating users through a heating flow regulating valve. The heating flow regulating valve is mainly used to regulate and control the flow of hot water from the heating network to the heating users to ensure the efficiency of the heating system and the comfort of the user's room temperature. In order to reduce the impact of pressure fluctuations in the heating network on heating users, a flow stabilizing structure is provided in the heating flow regulating valve used in the existing heating system. The existence of the flow stabilizing structure can ensure that the flow provided to the heating users remains unchanged when the pressure in the heating network fluctuates. The existing heating flow regulating valve includes a flow regulating part and a flow stabilizing structure part. The flow regulating part and the flow stabilizing structure part are usually arranged on the upper and lower sides of the valve body respectively. In order to ensure the flow area in the valve body, two flow stabilizing valve cores and a flow regulating valve core occupying a larger (longitudinal) space are usually provided in the valve body. For example, the application number of the authorization announcement of the State Intellectual Property Office on March 28, 2023 is: 202011596118. 7. The name is: An invention patent for a self-operated flow control valve with a piston structure, which has a lower port, an upper port and a flow port arranged in sequence from bottom to top in the valve body, and a lower valve plate, an upper valve plate and a valve plate matched therewith are arranged in sequence on the upper side thereof. The structure is complex, the longitudinal dimension is large, the manufacturing cost is high and the space requirement for installation is high; the pressure feedback hole is arranged at the lower side of the water outlet and is connected to the spring cavity, which is easy to be blocked and fail. The impurity particles in the water are deposited in the spring cavity, which will affect the spring function and reduce the flow stabilizing effect. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned prior art and to provide a flow stabilizing structure of a heating flow regulating valve for heating users which has a simple structure, low cost, small longitudinal size and low requirement for installation space.

[0004] The technical solution adopted by the utility model to solve the above-mentioned deficiencies of the prior art is:

[0005] A flow stabilizing structure of a heating flow regulating valve for heating users, characterized in that a Y-shaped valve body is provided, the valve body comprises a connecting body and a valve core mounting body, the lower part is a horizontally arranged connecting body, the left end of the connecting body is a water inlet, and the right end is a water outlet, the valve core mounting body is arranged on the upper part of the connecting body from bottom to top and tilted to the right, a valve core mounting seat is arranged in the lower part of the valve core mounting body, a fixed valve plate is arranged on the valve core mounting seat, and a fixed flow hole is arranged on the fixed valve plate; a valve cover is provided at the upper end of the valve core mounting body, a freely rotatable valve stem is provided on the valve cover, and a valve core matching the fixed valve plate is provided at the lower end of the valve stem A regulating valve plate is provided with a regulating flow hole on the regulating valve plate; a steady flow port is provided on the right side of the valve core mounting body, a steady flow cover which can slide freely axially and cooperate with the steady flow port is sleeved on the valve stem, a pressure-sensitive diaphragm is provided on the upper side of the steady flow cover, the pressure-sensitive diaphragm is sealed and fixedly connected to the inner side of the valve core mounting body on all sides, the lower side of the pressure-sensitive diaphragm is in contact with the upper side of the steady flow cover, a steady flow compression spring is sleeved on the valve stem between the steady flow cover and the regulating valve plate, the chamber between the pressure-sensitive diaphragm and the fixed valve plate is the regulating chamber, a pressure feedback chamber is provided between the pressure-sensitive diaphragm and the valve cover, and a pressure feedback hole which connects the water inlet and the pressure feedback chamber is provided on the side wall of the valve core mounting body.

[0006] The pressure-sensitive diaphragm described in the utility model is sleeved on the valve stem, and a connecting pressure plate is provided on the upper side of the pressure-sensitive diaphragm to press and fix the inner end of the pressure-sensitive diaphragm to the middle part of the upper side of the flow stabilizer; the connecting pressure plate, the inner end of the pressure-sensitive diaphragm and the flow stabilizer can slide freely on the valve stem.

[0007] The utility model is further improved, the pressure-sensitive membrane is wavy from outside to inside. When the inner end of the pressure-sensitive membrane slides up and down, the wave shape changes, the material does not undergo elastic deformation, it is not easy to be damaged and has high pressure sensitivity.

[0008] The fixed valve plate described in the utility model is evenly distributed with two fixed flow holes, and the regulating valve plate is provided with two regulating flow holes respectively matched with the two fixed flow holes. The regulating valve plate is rotated by rotating the valve stem, so that when the regulating flow holes are opposite to the fixed flow holes, the valve is fully open and the flow rate is maximum. When the regulating flow holes are staggered with the fixed flow holes, the valve is closed and the flow rate is zero.

[0009] The flow stabilizer described in the utility model is in the shape of a round cover, a connecting boss is arranged in the middle of the flow stabilizer, the inner end of the pressure-sensitive diaphragm is pressed and fixed on the upper side of the connecting boss through a connecting pressure plate, and the outer plate of the flow stabilizer cooperates with the flow stabilizer port to change the size of the flow stabilizer port.

[0010] The utility model is further improved, and a sewage outlet is provided on the lower side of the connecting body below the valve core installation body, and a sewage plug is installed on the sewage hole, and the sewage plug is sealed on the sewage hole through a thread. Unscrewing the sewage plug can discharge impurities in the heating water deposited on the lower side of the fixed valve plate; especially before starting heating, it can effectively remove impurities deposited and generated in the pipeline during the non-heating period, prevent impurities from entering the valve core, and extend the service life.

[0011] When the utility model is in use, the water inlet is connected to the heating network, and the water outlet is connected to the heating pipe of the heating user. The rotating valve stem drives the regulating valve plate to rotate, so that the regulating flow hole and the fixed flow hole partially overlap, and the flow (the opening of the valve) is adjusted according to the flow demand of the heating. However, when the heating pressure in the heating network fluctuates, the pressure difference on both sides of the water inlet and the water outlet changes, and the pressure at the water inlet acts on the upper side of the pressure-sensitive diaphragm through the pressure feedback hole, and the pressure at the water outlet acts on the lower side of the pressure-sensitive diaphragm (on the lower side of the flow stabilizer). Under the action of the pressure difference on both sides of the water inlet and the water outlet, the pressure-sensitive diaphragm drives the flow stabilizer to slide on the valve stem, and cooperates with the flow stabilizer compression spring to change the actual flow area of ​​the flow stabilizer, thereby achieving the effect of stabilizing the flow. Due to the inclined arrangement of the valve core mounting body, the fixed valve plate and the regulating valve plate in the connecting body, the maximum flow area of ​​the fixed flow hole, the regulating flow hole and the steady flow port can be increased to meet the flow area requirement of the valve body; the structure in which the flow regulating part and the steady flow structure part cooperate with each other has the advantages of simple structure, small longitudinal dimension, high and low manufacturing cost and low space requirement during installation; the pressure feedback hole is arranged on the upper side of the water inlet, and flows upward and feeds back pressure, and is not easily blocked by impurities in the heating water; the installation position of the steady flow compression spring is not easy to deposit impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Figure 2 It is a structural schematic diagram of the fixed valve plate, the regulating valve plate and the valve plate cooperating with each other (the fixed flow hole and the regulating flow hole completely overlap) in the utility model.

[0014] Figure 3 It is a structural schematic diagram of a fixed valve plate in the utility model.

[0015] Figure 4 It is a structural schematic diagram of the pressure-sensitive diaphragm in the utility model.

[0016] Figure 5 It is a three-dimensional structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0017] like Figure 1-Figure 4The flow stabilizing structure of a heating flow regulating valve for heating users shown in the figure is provided with a Y-shaped valve body, which includes a connecting body 11 and a valve core mounting body 5. The connecting body 11 is sleeve-shaped and arranged horizontally. The left end of the connecting body 11 is a water inlet 10 and the right end is a water outlet 16. The valve core mounting body 5 is sleeve-shaped and arranged at the upper part of the connecting body from bottom to top and tilted to the right. The angle between the axis of the valve core mounting body and the axis of the connecting body is between 25-50°, preferably 30-45°. In this embodiment, the angle between the axis of the valve core mounting body and the axis of the connecting body is 30°. The valve core mounting body 5 and the connecting body 11 are obliquely intersected, the left side of the valve core mounting body 5 is connected to the water inlet, and the right side blocks the internal flow channel of the connecting body 11; a valve core mounting seat 12 is arranged in the lower part of the valve core mounting body 5, and the valve core mounting seat 12 is arranged at the lower end of the valve core mounting body in an oblique manner parallel to the axial direction of the valve core mounting body 5. A fixed valve plate 13 is provided on the valve core mounting seat 12, and a fixed flow hole 9 is provided on the fixed valve plate 13; a valve cover 2 is provided on the upper end of the valve core mounting body 5, and a freely rotatable valve stem 1 is provided on the valve cover 2 and is arranged parallel to and inclined with the valve core mounting body, and a sealing ring is provided between the valve stem 1 and the valve cover 2, and an adjusting valve plate 14 is provided at the lower end of the valve stem 1, which is arranged close to and relatively rotatable with the fixed valve plate 13, and the adjusting valve plate 14 is provided with an adjusting flow hole 7 that cooperates with the fixed flow hole 9; a steady flow port 15 that connects the inside of the valve core mounting body 5 with the water outlet 16 is provided on the right side of the valve core mounting body 5 on the upper side of the fixed valve plate 13 and on the side wall of the flow channel inside the partition connecting the main body 11, and a steady flow cover 17 that can slide freely in the axial direction and cooperate with the steady flow port 15 is provided on the valve stem 1, and a pressure-sensitive diaphragm 18 is provided on the upper side of the steady flow cover 17, and the pressure-sensitive diaphragm 18 is sealed and fixedly connected to the inner side of the valve core mounting body on all sides, and the lower side of the pressure-sensitive diaphragm is in contact with the upper side of the steady flow cover, from Figure 1 It can be seen that the pressure-sensitive diaphragm 18 is pressed and fixed around the valve cover 2 and the upper end of the side wall of the valve core mounting body 5; the pressure-sensitive diaphragm 18 is sleeved on the valve stem 1, and a connecting pressure plate 19 is provided on the upper side of the pressure-sensitive diaphragm 18 to press and fix the inner end of the pressure-sensitive diaphragm to the middle of the upper side of the flow stabilizer 17, and the connecting pressure plate 19, the inner end of the pressure-sensitive diaphragm and the flow stabilizer can slide freely on the valve stem; the flow stabilizer 17 is in the shape of a round cover, and a connecting boss is provided in the middle of the flow stabilizer 17. The pressure-sensitive diaphragm is sleeved on the valve stem, and its inner end is pressed and fixed to the upper side of the connecting boss through the connecting pressure plate. The outer plate (the sleeve-shaped part) of the flow stabilizer 17 cooperates with the flow stabilizer 15 to change the actual flow area of ​​the flow stabilizer. A flow stabilizing compression spring 4 is sleeved on the valve stem 1 between the flow stabilizer 17 and the regulating valve plate 14, the chamber between the pressure-sensitive diaphragm 18 and the fixed valve plate 14 is the regulating chamber 6, a pressure feedback chamber 3 is provided between the pressure-sensitive diaphragm 18 and the valve cover 2, and a pressure feedback hole 8 connecting the water inlet 10 and the pressure feedback chamber 3 is provided on the side wall on the left side of the valve core mounting body 5.

[0018] The fixed valve plate described in the utility model is evenly distributed with two fixed flow holes, and the regulating valve plate is provided with two regulating flow holes respectively matched with the two fixed flow holes. The regulating valve plate is rotated by rotating the valve stem, so that when the regulating flow holes are opposite to the fixed flow holes, the valve is fully open and the flow rate is maximum. When the regulating flow holes are staggered with the fixed flow holes, the valve is closed and the flow rate is zero.

[0019] Further improvement, the shape of the pressure-sensitive diaphragm 18 is as follows Figure 1 , Figure 4 As shown, it is wavy from outside to inside; when the inner end of the annular wavy pressure-sensitive diaphragm slides up and down on the valve stem, its wave shape changes, the material does not undergo elastic deformation, it is not easy to be damaged, and has high pressure sensitivity.

[0020] As a further improvement, a drain port is provided on the lower side of the connecting body below the valve core installation body, and a drain plug is installed on the drain hole, which is threadedly plugged on the drain hole. Unscrewing the drain plug can discharge impurities in the heating water deposited on the lower side of the fixed valve plate; especially before starting heating, it can effectively remove impurities deposited and generated in the pipeline during the non-heating period, prevent impurities from entering the valve core, and extend the service life.

[0021] When the utility model is in use, the water inlet is connected to the heating pipe network, and the water outlet is connected to the heating pipe of the heating user. The rotating valve stem drives the regulating valve plate to rotate, so that the regulating flow hole and the fixed flow hole partially overlap, and the flow rate (the opening of the valve) is adjusted according to the flow rate of heating. However, when the heating pressure in the heating pipe network fluctuates, the pressure difference on both sides of the water inlet and the water outlet changes, and the pressure at the water inlet acts on the upper side of the pressure-sensitive diaphragm through the pressure feedback hole, and the pressure at the water outlet acts on the lower side of the pressure-sensitive diaphragm (on the lower side of the flow stabilizing cover). Under the action of the pressure difference on both sides of the water inlet and the water outlet, the pressure-sensitive diaphragm drives the flow stabilizing cover to slide on the valve stem. When the water inlet pressure becomes larger, the flow stabilizing cover slides down, the flow stabilizing compression spring is compressed, and the actual flow area of ​​the flow stabilizing port is reduced. When the water inlet pressure changes, the flow stabilizing cover slides up under the elastic force of the flow stabilizing compression spring, and the actual flow area of ​​the flow stabilizing port is increased, thereby achieving the effect of flow stabilization. Due to the inclined arrangement of the valve core mounting body, the fixed valve plate and the regulating valve plate in the connecting body, the maximum flow area of ​​the fixed flow hole, the regulating flow hole and the steady flow port can be increased to meet the flow area requirement of the valve body; the structure in which the flow regulating part and the steady flow structure part cooperate with each other has the advantages of simple structure, small longitudinal dimension, high and low manufacturing cost and low space requirement during installation; the pressure feedback hole is arranged on the upper side of the water inlet, and flows upward and feeds back the pressure, and is not easily blocked by impurities in the heating water; the installation position of the steady flow compression spring is not easy to deposit impurities, and the steady flow effect is good.

Claims

1. A flow stabilizing structure of a heating flow regulating valve for heating users, characterized in that: A Y-shaped valve body is provided, which includes a connecting body and a valve core installation body. The lower part is a horizontally arranged connecting body, the left end of the connecting body is a water inlet, and the right end is a water outlet. The valve core installation body is arranged on the upper part of the connecting body from bottom to top and tilted to the right. A valve core installation seat is arranged in the lower part of the valve core installation body, a fixed valve plate is arranged on the valve core installation seat, and a fixed flow hole is arranged on the fixed valve plate; a valve cover is arranged on the upper end of the valve core installation body, a freely rotatable valve stem is arranged on the valve cover, an adjusting valve plate cooperating with the fixed valve plate is arranged on the lower end of the valve stem, and a Adjust the flow hole; a steady flow port is provided on the right side of the valve core mounting body, a steady flow cover which can slide freely axially and cooperate with the steady flow port is provided on the valve stem, a pressure-sensitive diaphragm is provided on the upper side of the steady flow cover, the pressure-sensitive diaphragm is sealed and fixedly connected to the inner side of the valve core mounting body on all sides, the lower side of the pressure-sensitive diaphragm is in contact with the upper side of the steady flow cover, a steady flow compression spring is provided on the valve stem between the steady flow cover and the regulating valve plate, the chamber between the pressure-sensitive diaphragm and the fixed valve plate is the regulating chamber, a pressure feedback chamber is provided between the pressure-sensitive diaphragm and the valve cover, and a pressure feedback hole which connects the water inlet and the pressure feedback chamber is provided on the side wall of the valve core mounting body.

2. The flow stabilizing structure of the heating flow regulating valve for heating users according to claim 1 is characterized in that: The pressure-sensitive diaphragm is sleeved on the valve stem, and a connecting pressure plate is provided on the upper side of the pressure-sensitive diaphragm to press and fix the inner end of the pressure-sensitive diaphragm to the middle of the upper side of the flow stabilizer. The connecting pressure plate, the inner end of the pressure-sensitive diaphragm and the flow stabilizer can slide freely on the valve stem.

3. The flow stabilizing structure of the heating flow regulating valve for heating users according to claim 1 is characterized in that: The fixed valve plate is evenly distributed with two fixed flow holes, and the regulating valve plate is provided with two regulating flow holes respectively matched with the two fixed flow holes.

4. The flow stabilizing structure of the heating flow regulating valve for heating users according to claim 1 is characterized in that: The flow stabilizer is in the shape of a round cover, and a connecting boss is arranged in the middle of the flow stabilizer. The inner end of the pressure-sensitive diaphragm is pressed and fixed on the upper side of the connecting boss through a connecting pressure plate. The outer plate of the flow stabilizer cooperates with the flow stabilizer port to change the size of the flow stabilizer port.

5. The flow stabilizing structure of the heating flow regulating valve for heating users according to any one of claims 1 to 4, characterized in that: The pressure-sensitive diaphragm is wavy from outside to inside.

6. The flow stabilizing structure of the heating flow regulating valve for heating users according to any one of claims 1 to 4, characterized in that: A sewage outlet is arranged on the lower side of the connecting body below the valve core installation body, and a sewage outlet plug is installed on the sewage outlet, and the sewage outlet plug is sealed on the sewage outlet through threads.

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