Heat supply terminal energy redistribution device and heat supply system

Abstract

The present invention relates to a heat supply end energy redistribution device and a heat supply system. The heat supply end energy redistribution device includes a valve body, and the valve body includes an inner housing, a water inlet connecting pipe, a water outlet connecting pipe, a first driving mechanism, a second driving mechanism, and a valve rod mechanism; the inner housing includes a first housing and a second housing; a flow rate control chamber is provided in the first housing, and a piston chamber is provided in the second housing; the water outlet connecting pipe communicates with the flow rate control chamber; the water inlet connecting pipe communicates with the piston chamber; the valve rod mechanism includes a valve rod, an impeller, and a piston; the valve rod is located in the piston chamber, the valve hole, and the flow rate control chamber; the impeller is located in the flow rate control chamber, and the impeller rotates synchronously with the valve rod, and the two can slide relative to each other in the axial direction of the valve rod; the piston is located in the piston chamber and is fixed on the valve rod; the second driving mechanism is used to control the lifting of the valve rod; the first driving mechanism is used to control the rotation of the valve rod. The heat supply end energy redistribution device can accelerate the water flow with good effect, and the temperature regulation of the heat supply system is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of heating equipment, and particularly relates to an energy redistribution device at the heating end and a heating system. Background Art

[0002] Currently, in winter heating, hot water circulation heating is used, and the heat of the hot water entering the household cannot be automatically evenly distributed. To solve this technical problem, the invention patent with the publication number of CN 113090764 B discloses a dynamic resistor structure for hot water pipes. When the heating season comes, the valve control in the pipe is opened, and the piston valve of the dynamic resistor moves upward to open the pipeline to allow hot water to pass through; when the temperature of a certain household in the unit is too low, the temperature is adjusted through the indoor thermostat, and the impeller part in the dynamic resistor structure in the pipeline sinks into the pipeline through the sliding rod group, and the control unit of the electric actuator part drives the impeller to rotate, accelerating the water flow, increasing the indoor heat exchange area, and increasing the indoor temperature; when the indoor temperature reaches the set value, the rotation of the impeller is stopped, and the impeller is retracted to the upper part of the piston valve through the sliding rod group.

[0003] However, the inventor found in practice that the acceleration effect of this dynamic resistor structure on hot water is not ideal and cannot meet the speed-up requirements for heat sharing among heating households, so it needs to be optimized and improved. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an energy redistribution device at the heating end and a heating system. The energy redistribution device at the heating end can accelerate the water flow with good effect, and the temperature adjustment of the heating system is more accurate, which is conducive to realizing the even sharing of heat among heating households.

[0005] To solve the above technical problem, the technical solution of the present invention is: an energy redistribution device at the heating end, including a valve body, and the valve body includes an inner housing, a water inlet connection pipe, a water outlet connection pipe, a first driving mechanism, a second driving mechanism, and a valve rod mechanism;

[0006] The inner housing includes a first housing and a second housing; wherein, a flow rate control cavity is provided in the first housing, and a piston cavity is provided in the second housing; there is a valve seat between the piston cavity and the flow rate control cavity, and a valve hole communicating the piston cavity and the flow rate control cavity is provided on the valve seat; the water outlet connection pipe is communicated with the flow rate control cavity; the water inlet connection pipe is communicated with the piston cavity;

[0007] The valve rod mechanism includes a valve rod, an impeller, and a piston; the valve rod is located in the piston cavity, the valve hole, and the flow rate control cavity; the impeller is located in the flow rate control cavity, the impeller rotates synchronously with the valve rod, and the two can slide relative to each other in the axial direction of the valve rod; the piston is located in the piston cavity and is fixed on the valve rod; the piston cooperates with the valve hole to control the valve rod to open or close the valve body;

[0008] The second driving mechanism is used to control the lifting and lowering of the valve stem; the first driving mechanism is used to control the rotation of the valve stem.

[0009] As a preferred technical solution, it also includes an outer shell, wherein a closed valve cavity is formed in the outer shell, and the valve body is located in the valve cavity.

[0010] As a preferred technical solution, the water outlet pipe is tangent to the flow rate control chamber.

[0011] As a preferred technical solution, the inner shell also includes a third shell, which has a sealing chamber inside, and the sealing chamber is connected to the piston chamber; the end of the valve stem away from the impeller passes through the sealing chamber and is transmission-connected to the first drive mechanism and the second drive mechanism; a sealing ring and a sealing packing are provided in the sealing chamber to form a dynamic seal between the inner shell and the valve stem.

[0012] As a preferred technical solution, a weight-reducing hole is provided inside the valve stem.

[0013] As a preferred technical solution, the second driving mechanism includes a shaft sleeve, a driving sleeve, a driving rod, a transfer rod and a guide rail;

[0014] The shaft sleeve is rotatably mounted on the inner housing, and an outer wall of the shaft sleeve is processed with an external thread and a transmission structure; the shaft sleeve is connected to the lifting drive device through the transmission structure;

[0015] The drive sleeve is threadedly engaged with the external threaded portion of the shaft sleeve;

[0016] The guide rail is fixed on the inner shell;

[0017] The driving rod is slidably connected to the guide rail, and the lower end of the driving rod is fixedly connected to the driving sleeve;

[0018] The transfer rod and the valve stem can rotate relative to each other and rise and fall synchronously; the transfer rod and the driving rod are fixedly connected and rise and fall synchronously.

[0019] As a preferred technical solution, the transmission structure is transmission teeth, and the transmission teeth are evenly distributed in the circumferential direction of the sleeve.

[0020] As a preferred technical solution, the first driving mechanism includes a transmission gear, a limiting claw and a rotation driving device;

[0021] The transmission gear is sleeved on the outside of the valve stem, and the two can move axially relative to each other and rotate synchronously;

[0022] The limiting claw is located on the outside of the transmission gear and is fixedly connected to the inner housing;

[0023] The rotation driving device is used to drive the transmission gear to rotate.

[0024] The heating system includes the above-mentioned heating terminal energy redistribution device.

[0025] As a preferred technical solution, it further includes a water supply pipe, a water inlet pipe, a water return pipe, and a plurality of radiators. The water inlet end of the water inlet pipe is connected to the water supply pipe, the water outlet end is connected to the radiator, and the water outlet end of the radiator is connected to the water return pipe; the heating terminal energy redistribution device is arranged on the water inlet pipe.

[0026] Due to the adoption of the above technical solution, the heating terminal energy redistribution device, that is, the heating system, has the following advantages:

[0027] By reasonably setting the inner shell structure, the heating terminal energy redistribution device forms a flow velocity control cavity in the inner shell. Cooperating with the impeller, it can overcome the deficiencies of the prior art, significantly accelerate the water flow, and is conducive to realizing the heat sharing among heating households.

[0028] The piston, valve rod, and impeller are designed as a structure that can rotate synchronously. When controlling the rotation of the impeller, the piston also rotates synchronously, which will throw some precipitated impurities into the water flow and prevent them from precipitating on the valve body. Therefore, it can play a role in cleaning the valve body and avoid the adverse consequences caused by impurity precipitation, such as the rusting of other structures such as ball valves due to impurity precipitation in heating hot water, and the inability to open or close tightly.

[0029] Through fluid simulation calculation, the combination of the impeller, piston, valve rod, and inner shell can increase the water flow velocity, achieving the effect of increasing the indoor heating temperature. It realizes a small-scale sharing at the end of heating households, and there is no need to increase the total valve flow of the heat exchange station to raise the temperature, effectively saving heat sources and costs, and solving the pain point of uneven heating for current heating households. Description of the Drawings

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0032] Figure 2 It is a schematic structural diagram of the valve body in an embodiment of the present invention;

[0033] Figure 3 It is a transverse cross-sectional view of an embodiment of the present invention;

[0034] Figure 4 It is a longitudinal cross-sectional view of an embodiment of the present invention.

[0035] In the figure:

[0036] 1 - Outer housing

[0037] 2 - Water outlet connection pipe

[0038] 3 - Water inlet connection pipe

[0039] 4 - Inner housing; 41 - First housing; 42 - Second housing; 43 - Third housing; 44 - Plug; 45 - Valve seat

[0040] 5 - First drive mechanism; 51 - Second motor; 52 - Second drive gear; 53 - Transmission gear; 54 - Limit claw

[0041] 6 - Second drive mechanism; 61 - First motor; 62 - First drive gear; 63 - Bush; 64 - Drive sleeve; 65 - Drive rod; 66 - Adapter rod; 67 - Guide rail

[0042] 7 - Valve rod mechanism; 71 - Thrust bearing; 72 - Impeller; 73 - Piston; 74 - Valve rod; 75 - Sealing ring; 76 - Packing; 77 - Packing gland; 78 - Lightening hole Detailed implementation mode

[0043] As shown in Figure 1 、 2 、3, the heat supply end energy redistribution device includes an outer housing 1 and a valve body. The outer housing 1 is formed by docking and assembling two housings, and a closed valve cavity is formed inside. The valve body is installed in the valve cavity. The outer housing 1 plays a role in fixing the valve body, making the two into one. The material of the outer housing 1 can be selected according to actual needs, such as plastic material, metal materials such as copper or stainless steel.

[0044] As shown in Figure 2 、 Figure 3 and Figure 4 shown, the valve body includes an inner housing 4, a water inlet connection pipe 3, a water outlet connection pipe 2, a first drive mechanism 5, a second drive mechanism 6 and a valve rod mechanism 7. The valve rod mechanism 7 is located inside the inner housing 4 and cooperates with the first drive mechanism 5 and the second drive mechanism 6, which can not only open or close the valve body, but also increase the water flow speed in the valve body.

[0045] The inner shell 4 includes a first shell 41, a second shell 42 and a third shell 43 connected in sequence, wherein the first shell 41 has a flow rate control chamber, the second shell 42 has a piston chamber, and the third shell 43 has a sealing chamber; the flow rate control chamber, the piston chamber and the sealing chamber are connected in sequence. The first shell 41, the second shell 42 and the third shell 43 can be a complete, integrated shell, or can be made into a detachable structure according to the influence of factors such as assembly and processing. In order to facilitate the processing of the inner shell, the lower end of the first shell 41 is open, that is, the lower opening of the flow rate control chamber, and the opening is closed by a plug 44; at the same time, the upper end of the sealing chamber is open. There is a valve seat 45 between the piston chamber and the flow rate control chamber, and the valve seat 45 has a valve hole connecting the piston chamber and the flow rate control chamber.

[0046] The water outlet pipe 2 is fixedly connected to the first housing 41 and communicated with the flow rate control chamber. Preferably, the water flowing from the flow rate control chamber into the water outlet pipe 2 is tangent to the flow rate control chamber. The water inlet pipe 3 is fixedly connected to the second housing 42 and communicated with the piston chamber. The water flows through the water inlet pipe 3, the piston chamber, the flow rate control chamber, and the water outlet pipe 2 in sequence.

[0047] The valve stem mechanism 7 is located in the inner housing 4 , and includes a valve stem 74 , an impeller 72 , a piston 73 , a sealing ring 75 , a sealing packing 76 and a packing cover 77 .

[0048] The valve stem 74 extends from the sealing chamber, extends through the piston chamber and then extends into the flow rate control chamber; wherein, the impeller 72 is rotatably installed in the flow rate control chamber and is transmission-connected to the valve stem 74. The impeller 72 and the valve stem 74 rotate synchronously, but the two can slide relative to each other in the axial direction, that is, when the valve stem 74 is raised or lowered, the impeller 72 is still located in the flow rate control chamber and will not rise or fall with the valve stem 74.

[0049] Specifically, the impeller 72 is located in the flow control chamber, and a thrust bearing 71 is provided between the lower end of the impeller 72 and the bottom wall of the flow control chamber. A mounting hole is provided in the middle of the plug 44, the thrust bearing 71 is located in the mounting hole, and the thrust washer extends out of the mounting hole; the lower end of the impeller 72 contacts the thrust washer, and there is a set gap between the impeller 72 and the plug 44.

[0050] The piston 73 is located in the piston cavity, and the piston 73 is fixed on the valve stem 74, and rises and rotates synchronously with the valve stem 74. The piston 73 cooperates with the valve hole, and can open and connect the piston cavity and the flow rate control cavity or close and disconnect the piston cavity and the flow rate control cavity by controlling the valve stem 74. A labyrinth seal is formed between the piston 73 and the valve seat 45.

[0051] The piston cavity provides an opening space for the piston 73, and the flow rate control cavity provides an acceleration space for the impeller 72; after the fluid gushes out from the valve hole of the valve seat 45, it diffuses to the flow rate control cavity behind the valve seat 45, and can flow out after being accelerated by the impeller 72. Compared with the existing structural form, the structural combination of the piston cavity, the valve seat 45 and the flow rate control cavity can better achieve water flow acceleration, and the effect is excellent. Through computational simulation analysis, the rotation of the impeller 72 can drive static water flow and achieve an increase rate of about 0.25m / s at the inlet and outlet; by reasonably setting the blade width, an ideal water flow increase rate can be obtained. For example, when the blade width is 16mm, the inlet water flow velocity can be increased from 0 to 0.69m / s.

[0052] The sealing ring 75 and the sealing packing 76 are arranged in the sealing cavity, the sealing ring 75 is adjacent to the piston cavity, and the sealing packing 76 is located on the side of the sealing ring 75 away from the piston cavity. The packing cover 77 blocks the upper end opening of the sealing cavity. Specifically, the packing cover 77 is fixedly connected to the third housing 43 and presses on the end of the sealing packing 76, so as to form a good dynamic seal between the sealing packing 76 and the valve stem 74.

[0053] The valve stem 74 has a weight-reducing hole 78 inside, which reduces the weight of the valve stem 74 while maintaining the design strength of the valve stem 74, thereby reducing material usage and manufacturing costs.

[0054] The second driving mechanism 6 is used to control the lifting of the valve stem 74, that is, to control the piston 73 to open or close the valve hole; it includes a sleeve 63, a drive sleeve 64, a drive rod 65, a transfer rod 66 and a guide rail 67. The sleeve 63 is rotatably mounted on the third housing 43 through a bearing, a sleeve and other connecting parts, that is, the sleeve 63 can rotate relative to the third housing 43. The outer wall of the sleeve 63 is processed with an external thread and a transmission structure. The drive sleeve 64 is threadedly engaged with the external thread part of the sleeve 63.

[0055] The guide rail 67 is fixed on the third housing 43, and the driving rod 65 is slidably connected to the guide rail 67. The lower end of the driving rod 65 extends out of the guide rail 67 and is fixedly connected to the driving sleeve 64, and the upper end extends out of the guide rail 67 and is fixedly connected to the transfer rod 66; for example, the transfer rod 66 and the driving rod 65 are connected and fixed as a whole through a pin shaft, and rise and fall synchronously. The cooperation between the driving rod 65 and the guide rail 67 can not only ensure the lifting and falling movement of the driving rod 65, but also limit the circumferential displacement of the driving sleeve 64 to prevent it from rotating.

[0056] The transfer rod 66 is also connected to the valve stem 74. The transfer rod 66 and the valve stem 74 can rotate relative to each other, but rise and fall synchronously. For example, an annular groove is processed on the outer wall of the valve stem 74, and the transfer rod 66 is engaged with the annular groove. In the axial direction of the valve stem 74, the transfer rod 66 and the valve stem 74 cannot move relative to each other; but in the circumferential direction of the valve stem 74, the two can rotate relative to each other.

[0057] Preferably, the second driving mechanism 6 has two driving rods 65, and the two driving rods 65 are respectively located on opposite sides of the third shell body 43; the middle part of the transfer rod 66 has an arc structure that matches the annular groove, and is connected to the valve stem 74 by utilizing the arc structure; the two ends of the transfer rod 66 are respectively connected to the two driving rods 65.

[0058] The shaft sleeve 63 is connected to the lifting drive device through a transmission structure, and the transmission structure can adopt transmission parts such as gears and pulleys. When the transmission structure is a transmission tooth and the transmission teeth are evenly distributed on the circumference of the shaft sleeve 63, the lifting drive device can be composed of a first driving gear 62 and a first motor 61. The first motor 61 is fixed on the outer shell 1 or the inner shell 4. The first driving gear 62 is fixed on the output shaft of the first motor 61 and meshes with the transmission teeth of the shaft sleeve 63. When the first motor 61 is started, the first driving gear 62 drives the shaft sleeve 63 to rotate, and the driving sleeve 64 rises or falls, thereby driving the driving rod 65, the transfer rod 66, and the valve stem 74 to rise or fall. The shaft sleeve 63 and the lifting drive device can also be driven by pulleys, belts, etc., but it is recommended to use a gear transmission method. The gear transmission structure is compact and the transmission accuracy is guaranteed.

[0059] The first driving mechanism 5 is used to control the rotation of the valve stem 74, and includes a transmission gear 53, a limit claw 54 and a rotation driving device. The transmission gear 53 is sleeved on the outside of the valve stem 74, and the transmission gear 53 is clamped with the valve stem 74. The two can move axially relative to each other, but will rotate synchronously.

[0060] The limiting claw 54 is located outside the transmission gear 53 and is fixedly connected to the inner housing 4; specifically, Figure 2 As shown, the limiting claw 54 is fixed on the guide rail 67. A limiting groove is formed between the two arms of the limiting claw 54, and the transmission gear 53 is located in the limiting groove. When the valve stem 74 rises and falls, the transmission gear 53 is always located in the limiting claw 54, and does not rise and fall with the valve stem 74.

[0061] The rotation driving device can use a second motor 51 and a second driving gear 52. The second motor 51 is fixed to the outer housing 1 or the inner housing 4; the second driving gear 52 is fixed to the output shaft of the second motor 51. The second driving gear 52 is meshed with the transmission gear 53. When the second motor 51 is started, the second driving gear 52 drives the transmission gear 53 and the valve stem 74 to rotate; the impeller 72 rotates to accelerate the water flow in the flow rate control chamber.

[0062] A heating system includes a water supply pipe, a water inlet pipe and a water return pipe, wherein the water inlet end of the water inlet pipe is connected to the water supply pipe, the water outlet end is connected to the radiator in the household, and the water outlet end of the radiator is connected to the water return pipe; the water inlet pipe is provided with the above-mentioned heating terminal energy redistribution device.

[0063] When the heating system is working, obtain the indoor temperature of the household, compare the room temperature with the set temperature, and determine whether the room temperature requirement is met; among them, the room temperature requirement is that the room temperature is greater than or equal to the set temperature; if the room temperature does not meet the requirement and the valve stem 74 is fully opened, control the impeller 72 to rotate to accelerate the water flow. When the impeller 72 is fully opened and runs for the set time, if the room temperature still does not meet the room temperature requirement, then control the valve body of the adjacent household to open.

[0064] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Heating terminal energy redistribution device, Features: The valve body comprises an inner shell (4), a water inlet pipe (3), a water outlet pipe (2), a first drive mechanism (5), a second drive mechanism (6) and a valve stem mechanism (7); The inner shell (4) comprises a first shell (41) and a second shell (42); wherein the first shell (41) has a flow rate control chamber, and the second shell (42) has a piston chamber; a valve seat (45) is provided between the piston chamber and the flow rate control chamber, and the valve seat (45) has a valve hole communicating with the piston chamber and the flow rate control chamber; the water outlet pipe (2) is communicated with the flow rate control chamber; and the water inlet pipe (3) is communicated with the piston chamber; The valve stem mechanism (7) comprises a valve stem (74), an impeller (72) and a piston (73); the valve stem (74) is located in the piston cavity, the valve hole and the flow rate control cavity; the impeller (72) is located in the flow rate control cavity, the impeller (72) and the valve stem (74) rotate synchronously, and the two can slide relative to each other in the axial direction of the valve stem (74); the piston (73) is located in the piston cavity and is fixed on the valve stem (74); the piston (73) cooperates with the valve hole, and controls the valve stem (74) to realize opening or closing of the valve body; The second driving mechanism (6) is used to control the lifting and lowering of the valve stem (74); the first driving mechanism (5) is used to control the rotation of the valve stem (74); It also comprises an outer shell (1), wherein a closed valve cavity is formed in the outer shell (1), and the valve body is located in the valve cavity; The water outlet pipe (2) is tangent to the flow rate control chamber.

2. The heating terminal energy redistribution device according to claim 1, Features: The inner housing (4) further comprises a third housing (43), wherein the third housing (43) has a sealing cavity therein, wherein the sealing cavity is in communication with the piston cavity; an end of the valve stem (74) away from the impeller (72) passes through the sealing cavity and is transmission-connected to the first drive mechanism (5) and the second drive mechanism (6); a sealing ring (75) and a sealing packing (76) are provided in the sealing cavity, thereby forming a dynamic seal between the inner housing (4) and the valve stem (74).

3. The heating terminal energy redistribution device according to claim 1, Features: The valve stem (74) has a weight-reducing hole (78) inside.

4. The heating terminal energy redistribution device according to claim 1, Features: The second driving mechanism (6) comprises a shaft sleeve (63), a driving sleeve (64), a driving rod (65), a transfer rod (66) and a guide rail (67); The shaft sleeve (63) is rotatably mounted on the inner housing (4); an outer wall of the shaft sleeve (63) is processed with an external thread and a transmission structure; the shaft sleeve (63) is connected to the lifting drive device through the transmission structure; The drive sleeve (64) is threadably engaged with the external threaded portion of the shaft sleeve (63); The guide rail (67) is fixed on the inner shell (4); The driving rod (65) is slidably connected to the guide rail (67), and the lower end of the driving rod (65) is fixedly connected to the driving sleeve (64); The adapter rod (66) and the valve rod (74) can rotate relative to each other and lift synchronously; the adapter rod (66) is fixedly connected to the drive rod (65) and lifts synchronously.

5. The heat supply end energy redistribution device according to claim 4, characterized in that: The transmission structure is a transmission gear, and the transmission gears are evenly distributed in the circumferential direction of the bushing (63).

6. The heat supply end energy redistribution device according to claim 1, characterized in that: The first driving mechanism (5) includes a transmission gear (53), a limiting claw (54) and a rotation driving device; The transmission gear (53) is sleeved outside the valve rod (74), and the two can move axially relative to each other and rotate synchronously; The limiting claw (54) is located outside the transmission gear (53) and is fixedly connected to the inner housing (4); The rotation driving device is used to drive the transmission gear (53) to rotate.

7. A heating system, characterized in that: It includes the heat supply end energy redistribution device according to any one of claims 1-6.

8. The heating system according to claim 7, characterized in that: It further includes a water supply pipe, a water inlet pipe, a water return pipe and a plurality of radiators. The water inlet end of the water inlet pipe is communicated with the water supply pipe, the water outlet end is communicated with the radiator, and the water outlet end of the radiator is communicated with the water return pipe; the heat supply end energy redistribution device is arranged on the water inlet pipe.

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