High-rise direct connection heating device

Abstract

The application discloses a high-floor direct-connection heating device, which comprises a base, a high-pressure pump and a mounting seat are respectively arranged on the front and back of the middle part of the upper surface of the base, a heat exchange mechanism is arranged on the left side of the upper surface of the base, the front end of the heat exchange mechanism is connected with the liquid inlet of the high-pressure pump through a pipeline, the high-pressure pump pumps out the circulating water in the heat exchange mechanism to increase the pressure, a check valve is arranged on the liquid outlet of the high-pressure pump to prevent the circulating water from flowing backward, a self-force type flow valve is arranged on the right end of the mounting seat to automatically control the backwater flow, and connectors are arranged on the right ends of the check valve and the self-force type flow valve. The water supply pressure can be adaptively adjusted according to the number of users, the pressure leakage of the pipe network caused by excessively high pressure and the energy consumption of the equipment can be avoided, the temperature difference of the high-floor and low-floor heating can be eliminated, the heating temperature balance of the whole floor can be ensured, and the safety, economy and heating stability of the system operation are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of high-rise direct-connection heating units, specifically a high-rise direct-connection heating device. Background Technology

[0002] High-rise direct-connection heating units use high-pressure pumps as the core power source and frequency converters to increase the water supply pressure in the low-rise areas to the pressure required for heating in the high-rise areas, ensuring stable operation of the heating circulation in the high-rise areas. The unit is equipped with a check valve to prevent water from flowing back from the high-rise areas to the low-rise areas, maintaining a safe and stable pressure in the low-rise area pipe network. Combined with flow control components, the set flow rate is automatically locked to ensure hydraulic balance in the high-rise areas and avoid abnormal flow affecting the heating effect. It is a commonly used equipment for heating in high-rise buildings.

[0003] In actual operation, circulating water is transported from the heating station to the high-rise direct-connected heating units via the primary pipeline network. Traditional units lack automatic water temperature compensation. When the circulating water temperature does not reach the heating standard, it cannot replenish the temperature in time, directly leading to a decrease in heating effect and making it difficult to meet users' heating needs. At the same time, the increase or decrease in the number of high-rise heating users will directly cause fluctuations in return water pressure. Traditional high-rise direct-connected heating units cannot adaptively adjust the water pressure according to the number of users. Excessive pressure can easily cause leaks in the pipeline network and equipment, and also increase the energy consumption of high-pressure pumps; excessively low pressure will result in low heating temperatures for high-rise users and uneven heating temperatures between high and low zones, seriously affecting the heating quality and the economic efficiency of system operation. Summary of the Invention

[0004] The purpose of this invention is to provide a high-rise direct-connection heating device to at least solve the problems of existing technologies that cannot compensate for the temperature of heating circulating water, the heating temperature is not up to standard, the water pressure cannot be adjusted according to the number of users, and the pipes are easily damaged or the energy consumption is increased.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-rise direct-connection heating device, comprising a base, a high-pressure pump and a mounting base respectively installed on the front and rear sides of the middle of the upper surface of the base, a heat exchange mechanism installed on the left side of the upper surface of the base, the front end of the heat exchange mechanism being connected to the inlet of the high-pressure pump via a pipe, the high-pressure pump drawing out and pressurizing the circulating water in the heat exchange mechanism, a check valve installed at the outlet of the high-pressure pump to prevent backflow of the circulating water, a self-regulating flow valve installed at the right end of the mounting base to automatically control the return water flow, a connector installed at the right end of both the check valve and the self-regulating flow valve, a temperature control mechanism and an automatic pressure regulating mechanism respectively installed on the outer walls of the two connectors on the front and rear sides, the temperature control mechanism controlling the start and stop of the heat exchange mechanism and controlling the temperature of the circulating water, and the automatic pressure regulating mechanism adjusting the pressure of the high-temperature pump according to the number of users; The temperature control mechanism includes a sensing component installed on the outer wall of the front connector, which converts the circulating water temperature signal into mechanical motion. A first housing is installed on the top of the sensing component, and a switch component is installed in the inner cavity of the first housing.

[0006] Preferably, the sensing component includes a base mounted on the outer wall of the front connector, the inner cavity of the base being filled with mercury, a sleeve being mounted at the center of the upper surface of the base, a piston being inserted into the inner cavity of the sleeve, and a support rod being mounted on the top of the piston; The temperature signal is converted into a mechanical signal and used as a temperature control sensing element.

[0007] Preferably, the switch assembly includes a guide rod horizontally installed in the inner cavity of the first housing. Two sliders are slidably connected to the middle of the outer wall of the guide rod. Contacts are installed on the opposite surfaces of the two sliders. One contact is connected to an external power source, and the other contact is electrically connected to the heat exchange mechanism. The start and stop of the heat exchange mechanism are controlled by the contact or separation of the two contacts. One end of the first connecting rod is connected to the bottom of the slider by a pin, and the other end of the first connecting rod is connected to the top of the support rod by a pin. The sensor component is linked with the first linkage to make the contacts make or separate, thereby controlling the start and stop of the heat exchange mechanism and compensating for the temperature of the circulating water. Preferably, the outer surface of the contact is treated with silver plating using an electroplating process. Preferably, the automatic pressure control mechanism includes a second housing installed on the outer wall of the rear connector. The inner cavity of the second housing is provided with a sensing component, a rotating component and a frequency converter in sequence from front to back. The sensing component is connected to the outer wall of the connector and converts the circulating water pressure into mechanical motion to control the rotation of the rotating component. A toggle is installed on the knob of the frequency converter.

[0008] Preferably, the sensing component includes a wave lamp tube installed on the outer wall of the rear connector, and a sector gear is installed on the front side of the inner cavity of the second box via a pin. The top of the sector gear is connected to the top of the wave lamp tube via a second connecting rod. The deformation of the Bourdon tube is adjusted according to the water pressure to provide power for the rotation of the sector gear, thus serving as the power source for automatic adjustment of the circulating water pressure.

[0009] Preferably, the wave lamp tube is semi-circular in shape.

[0010] Preferably, the rotating assembly includes a rotating shaft mounted on the rear side of the inner cavity of the second box via a bearing. A spur gear and a turntable are sequentially mounted on the outer wall of the rotating shaft from front to back. The spur gear meshes with a sector gear. A buffer groove is provided on the side wall of the turntable, and a paddle is located in the inner cavity of the buffer groove. The frequency converter is controlled by rotating a turntable to keep the circulating water pressure constant, thus avoiding temperature differences in the rooms of users at different heights in high-rise buildings.

[0011] Preferably, the transmission ratio between the sector gear and the spur gear is less than 1.

[0012] The high-rise direct-connection heating device proposed in this invention has the following advantages: 1. This invention achieves real-time heat exchange between the base and circulating water, utilizing the thermal expansion and contraction characteristics of mercury to drive the piston, support rod, first connecting rod, and slider, realizing automatic on / off of contacts and precise control of the start and stop of the heat exchange mechanism; when the circulating water temperature is lower than the set threshold, heating compensation is automatically activated, and heating is automatically stopped when the temperature reaches the target. The purely mechanical structure is highly responsive and requires no electrical control intervention, continuously maintaining a stable heating water temperature, fundamentally solving the problems of substandard water temperature and poor heating effect in traditional units.

[0013] 2. This invention senses changes in return water pressure through a Bourdon tube, amplifies the pressure signal via a second connecting rod, sector gear, and spur gear transmission, and drives the rotary table to link with the frequency converter knob. It uses a buffer tank to set the normal water pressure range, and automatically adjusts the high-pressure pump's operating frequency when the pressure exceeds the limit. It can adaptively adjust the water supply pressure according to changes in the number of users, thus avoiding pipe network leaks caused by excessive pressure, reducing equipment energy consumption, eliminating temperature differences between high and low floors in high-rise buildings, ensuring balanced heating temperature for all users in the building, and significantly improving the system's safety, economy, and heating stability. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention; Figure 2 This is a perspective view of the heat exchange mechanism of the present invention; Figure 3 This is a perspective view of the temperature control mechanism of the present invention; Figure 4 This is a perspective view of the sensing component of the present invention; Figure 5 This is a perspective view of the switch assembly of the present invention; Figure 6 This is a perspective view of the automatic pressure control mechanism of the present invention; Figure 7 This invention is for Figure 6 Enlarged view of point A in the middle; Figure 8 This is a perspective view of the sensing component of the present invention; Figure 9 This is a perspective view of the rotating component of the present invention.

[0015] In the diagram: 1. Base; 2. High-pressure pump; 3. Mounting base; 4. Heat exchange mechanism; 5. Check valve; 6. Self-regulating flow valve; 7. Connector; 8. Temperature control mechanism; 9. Automatic pressure regulation mechanism; 41. Heat exchange box; 42. Baffle plate; 43. Heater; 81. Sensing component; 82. First housing; 83. Switching component; 811. Base; 812. Mercury; 813. Sleeve; 814. Piston; 815. Support rod; 831. Guide rod; 832. Slider; 833. Contact; 834. First connecting rod; 91. Second housing; 92. Sensing component; 93. Rotating component; 94. Frequency converter; 95. Toggle block; 921. Wave lamp tube; 922. Sector gear; 923. Second connecting rod; 931. Rotating shaft; 932. Spur gear; 933. Turntable; 934. Buffer groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-9 This invention provides a technical solution: a high-rise direct-connection heating device, including a base 1. A high-pressure pump 2 and a mounting base 3 are respectively installed on the front and rear sides of the middle of the upper surface of the base 1. A heat exchange mechanism 4 is installed on the left side of the upper surface of the base 1. The front end of the heat exchange mechanism 4 is connected to the inlet of the high-pressure pump 2 through a pipe. The high-pressure pump 2 draws out and pressurizes the circulating water in the heat exchange mechanism 4. A check valve 5 is installed at the outlet of the high-pressure pump 2 to prevent backflow of the circulating water. A self-regulating flow valve 6 is installed on the right end of the mounting base 3 to automatically control the return water flow. Both the check valve 5 and the self-regulating flow valve 6 have connectors 7 installed on their right ends. A temperature control mechanism 8 and an automatic pressure regulation mechanism 9 are respectively installed on the outer walls of the two connectors 7 on the front and rear sides. The temperature control mechanism 8 controls the start and stop of the heat exchange mechanism 4 and controls the temperature of the circulating water. The automatic pressure regulation mechanism 9 adjusts the pressure of the high-temperature pump 2 according to the number of users.

[0018] The heat exchange mechanism 4 includes a heat exchange box 41 installed on the left side of the upper surface of the base 1. The rear side of the heat exchange box 41 is connected to the primary pipeline. Several baffles 42 are installed in the inner cavity of the heat exchange box 41 from front to back. The baffles 42 change the direction of the circulating water flow and prolong the residence time of the circulating water in the heat exchange box 41. A heater 43 is installed on the inner wall of the heat exchange box 41 to heat the circulating water.

[0019] The temperature control mechanism 8 includes a sensing component 81 installed on the outer wall of the front connector 7, which converts the circulating water temperature signal into mechanical motion. A first housing 82 is installed on the top of the sensing component 81, and a switch component 83 is installed inside the first housing 82. The switch component 83 controls the start and stop of the heater 43.

[0020] As a preferred embodiment, the sensing component 81 further includes a base 811 mounted on the outer wall of the front connector 7. The base 811 is made of copper, which is not only corrosion-resistant but also has good thermal conductivity. The inner cavity of the base 811 is filled with mercury 812. A sleeve 813 is installed at the center of the upper surface of the base 811. A piston 814 is inserted into the inner cavity of the sleeve 813. The mercury 812 changes temperature with the circulating water. The volume of the mercury 812 is proportional to the temperature, allowing the mercury 812 to push the piston 814 upward. A support rod 815 is installed on the top of the piston 814. The temperature of the circulating water in the quick-conducting connector 7 of the base 811 keeps the mercury 812 at the same temperature as the circulating water. When the temperature of the circulating water decreases, the mercury 812 contracts, and the piston 814 and the support rod 815 move downward under their own gravity. When the temperature of the circulating water increases, the mercury 812 expands, pushing the piston 814 upward and driving the support rod 815 upward. This accurately converts the circulating water temperature signal into mechanical lifting and lowering motion, providing mechanical power for the switching assembly to turn on and off.

[0021] Mercury 812 volume changes linearly with temperature, and the temperature control threshold is precise and stable with no temperature drift error.

[0022] With a purely mechanical structure and no need for electrical control, it is suitable for complex environments at heating sites, has a long service life, and low maintenance costs.

[0023] As a preferred embodiment, the switch assembly 83 further includes a guide rod 831 horizontally mounted inside the cavity of the first housing 82. Two sliders 832 are slidably connected to the middle of the outer wall of the guide rod 831. The guide rod 831 is rectangular to prevent the sliders 832 from rotating. Contacts 833 are mounted on the opposite surfaces of the two sliders 832. One contact 833 is connected to an external power source, and the other contact 833 is electrically connected to the heater 43. The heater 43 is started or stopped by the contact or separation of the two contacts 832. The outer surface of the contact 833 is silver-plated using an electroplating process. When the contact 833 is closed, the contact surface resistance is low, the current transmission loss is small, the contact hardly heats up, and the temperature rise is low, avoiding overheating and burning of the contact 833 under high current. One end of the first connecting rod 834 is connected to the bottom of the slider 832 by a pin, and the other end of the first connecting rod 834 is connected to the top of the support rod 815 by a pin. When the support rod 815 moves up and down with temperature changes, it drives the two sliders 832 to move towards each other or away from each other along the guide rod 831 through the hinge transmission of the first connecting rod 834. When the circulating water temperature is lower than the set threshold, the support rod 815 moves down, causing the two sliders 832 to move towards each other, so that the contact 833 makes contact and conduction, and the heater 43 is energized and starts heating. When the circulating water temperature rises to the standard value, the support rod 815 moves up, causing the two sliders 832 to move away from each other, so that the contact 833 separates and disconnects, and the heater 43 is de-energized and stops heating.

[0024] It has low contact resistance, low conductivity loss, resistance to arc erosion, does not heat up or stick under high current, and has reliable switching.

[0025] The mechanical linkage has a fast response and no lag, precise temperature triggering, and high temperature control accuracy.

[0026] As a preferred embodiment, the automatic pressure control mechanism 9 further includes a second housing 91 installed on the outer wall of the rear connector 7. The inner cavity of the second housing 91 is provided with a sensing component 92, a rotating component 93 and a frequency converter 94 arranged sequentially from front to back. The sensing component 92 is connected to the outer wall of the connector 7. The sensing component 92 converts the circulating water pressure into mechanical motion and controls the rotation of the rotating component 93. The frequency converter 94 has a dial 95 installed on its knob. Rotating the frequency converter 94 knob clockwise or counterclockwise adjusts the frequency of the high-pressure pump 2 to decrease or increase.

[0027] As a preferred embodiment, the sensing assembly 92 further includes a wave lamp tube 921 mounted on the outer wall of the rear connector 7. The wave lamp tube 921 is semi-circular in shape and is elastic. When the water pressure increases or decreases, the water pressure squeezes the Bourdon tube 921 to deform, and the curvature of the Bourdon tube 921 becomes smaller or larger. A sector gear 922 is mounted on the front side of the inner cavity of the second housing 91 via a pin. The top of the sector gear 922 is connected to the top of the wave lamp tube 921 via a second connecting rod 923.

[0028] The circulating water pressure in the rear connector 7 directly acts on the Bourdon tube 921. When the return water pressure increases, the water pressure squeezes the Bourdon tube 921 to produce elastic deformation, making its curvature smaller. When the return water pressure decreases, the Bourdon tube 921 returns to its original position under its own elastic action, and its curvature increases. The deformation displacement of the Bourdon tube 921 is transmitted through the second connecting rod 923, driving the sector gear 922 to rotate clockwise or counterclockwise around the pin shaft, accurately converting the circulating water pressure signal into the mechanical motion of gear rotation, providing stable mechanical transmission power for subsequent automatic pressure adjustment.

[0029] It has good elasticity and high deformation linearity, and can respond quickly to small fluctuations in water pressure, making pressure detection accurate.

[0030] It has no electronic components, is resistant to moisture, high and low temperatures, and dust, and is suitable for harsh working conditions at heating sites.

[0031] It directly converts water pressure deformation into rotational motion without the need for intermediate conversion steps, resulting in a fast pressure regulation response.

[0032] As a preferred embodiment, the rotating assembly 93 further includes a rotating shaft 931 mounted on the rear side of the inner cavity of the second housing 91 via bearings. A spur gear 932 and a turntable 933 are sequentially mounted on the outer wall of the rotating shaft 931 from front to back. The spur gear 932 meshes with a sector gear 922. The transmission ratio between the sector gear 922 and the spur gear 932 is less than 1, which increases the angular velocity of the spur gear 932 and amplifies the signal from the turntable 933. A buffer groove 934 is provided on the side wall of the turntable 933, and a toggle block 95 is located inside the buffer groove 934. The buffer groove 934 serves as the normal water pressure range.

[0033] When the sector gear 922 rotates with the change in water pressure, it drives the meshing spur gear 932 to rotate synchronously with the rotating shaft 931. Under the action of a transmission ratio of less than 1, the turntable 933 rotates at a higher angular velocity to complete the amplification of the pressure signal. When the system water pressure is within the normal range, the toggle block 95 is in the buffer groove 934, the frequency converter knob does not move, and the high-pressure pump frequency remains stable. When the water pressure exceeds the normal upper or lower limit, the side wall of the buffer groove 934 presses and moves the toggle block 95, driving the frequency converter knob 94 to rotate, realizing the automatic adjustment of the high-pressure pump frequency and completing the adaptive control of system pressure.

[0034] Even slight pressure fluctuations can trigger a noticeable 933-degree turn of the dial, resulting in more sensitive pressure regulation response and more precise control.

[0035] The frequency converter is not triggered when the water pressure is within the normal range, which prevents the high-pressure pump 2 and the frequency converter 94 from operating frequently, thereby improving operational stability and service life.

[0036] It has strong anti-interference capabilities and is suitable for humid, dusty, and complex working conditions at heating sites.

[0037] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0038] Step 1: Circulating water enters the heat exchange box 41 from the underground pipe network. Under the water-blocking action of the baffle plate 42, the circulating water moves up and down in the heat exchange box 41. The high-pressure pump 2 draws the circulating water from the heat exchange box 41, pressurizes the circulating water and delivers it to the user. Then it flows back through the self-regulating flow valve 6. The self-regulating flow valve 6 automatically adjusts the circulating water flow rate to ensure that the circulating water volume can be supplied to the next level user for heating. Therefore, the circulating water is circulated in the user's room to achieve the purpose of winter heating. Step two: The base 811 and the connector 7 exchange heat, so that the mercury 812 inside the base 811 is at the same temperature as the circulating water. Mercury 812 has the property of thermal expansion and contraction. As the temperature of the circulating water rises or falls, the volume of mercury 812 increases or decreases. When mercury 812 increases, it squeezes the piston 814 to rise. When the volume of mercury 812 decreases, the piston 814 and the support rod 815 descend under their own weight. The support rod 815 causes the first connecting rod 834 to pull the two sliders 832 to gradually move away or closer. When the piston 814 descends to the height that the two contacts 833 can touch, it is the lower limit threshold of the circulating water temperature. At this time, the heater 43 is energized to heat the circulating water and replenish its temperature. When the water temperature meets the user's heating needs, the contacts 833 separate and the heater 43 stops heating, thus realizing the automatic replenishment of the circulating water temperature. Step 3: During the circulation of circulating water, the Bourdon tube 921 bears the pressure of circulating water. As the water pressure rises or falls, the curvature of the Bourdon tube 921 decreases or increases under its own elasticity, causing the second connecting rod 923 to pull the sector gear 922 to rotate clockwise or counterclockwise, converting the water pressure signal into mechanical motion. Step four: Through the transmission of sector gear 922 and spur gear 932, turntable 933 rotates counterclockwise or clockwise following spur gear 932. The range provided by buffer tank 934 serves as the normal water pressure range. Once the water pressure exceeds the upper or lower limit, buffer tank 934 moves to the left or right to move toggle block 95, and the frequency of inverter 94 decreases or increases, thereby decreasing or increasing the power of high-pressure pump 2. The water pressure is adjusted according to the number of users, which can save energy consumption of high-pressure pump 2 and prevent leakage caused by overpressure.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-rise direct-connection heating device, comprising a base (1), characterized in that, A high-pressure pump (2) and a mounting base (3) are respectively installed on the front and rear sides of the middle of the upper surface of the base (1). A heat exchange mechanism (4) is installed on the left side of the upper surface of the base (1). The front end of the heat exchange mechanism (4) is connected to the liquid inlet of the high-pressure pump (2) through a pipe. The high-pressure pump (2) draws out the circulating water in the heat exchange mechanism (4) and pressurizes it. A check valve (5) is installed at the liquid outlet of the high-pressure pump (2) to prevent the circulating water from flowing back. A self-regulating flow valve (6) is installed on the right end of the mounting base (3) to automatically control the return water flow. A connector (7) is installed on the right end of both the check valve (5) and the self-regulating flow valve (6). A temperature control mechanism (8) and an automatic pressure regulation mechanism (9) are respectively installed on the outer walls of the two connectors (7) on the front and rear sides. The temperature control mechanism (8) controls the start and stop of the heat exchange mechanism (4) and controls the temperature of the circulating water. The automatic pressure regulation mechanism (9) adjusts the pressure of the high-temperature pump (2) according to the number of users. The temperature control mechanism (8) includes a sensing component (81) installed on the outer wall of the front connector (7) to convert the circulating water temperature signal into mechanical motion. A first housing (82) is installed on the top of the sensing component (81), and a switch component (83) is installed inside the first housing (82).

2. A high-rise direct-connection heating device according to claim 1, characterized in that, The sensing component (81) includes a base (811) mounted on the outer wall of the front connector (7), the inner cavity of the base (811) is filled with mercury (812), a sleeve (813) is mounted at the center of the upper surface of the base (811), a piston (814) is inserted into the inner cavity of the sleeve (813), and a support rod (815) is mounted on the top of the piston (814).

3. A high-rise direct-connection heating device according to claim 2, characterized in that, The switch assembly (83) includes a guide rod (831) horizontally installed in the inner cavity of the first housing (82). Two sliders (832) are slidably connected to the middle of the outer wall of the guide rod (831). Contacts (833) are installed on the opposite surfaces of the two sliders (832). One contact (833) is connected to a power source, and the other contact (833) is electrically connected to the heat exchange mechanism (4). The start and stop of the heat exchange mechanism (4) are controlled by the contact or separation of the two contacts (832). One end of the first connecting rod (834) is connected to the bottom of the slider (832) by a pin. The other end of the first connecting rod (834) is connected to the top of the support rod (815) by a pin.

4. A high-rise direct-connection heating device according to claim 3, characterized in that, The outer surface of the contact (833) is treated with silver plating by electroplating.

5. A high-rise direct-connection heating device according to claim 4, characterized in that, The automatic pressure control mechanism (9) includes a second housing (91) installed on the outer wall of the rear connector (7). The inner cavity of the second housing (91) is provided with a sensing component (92), a rotating component (93) and a frequency converter (94) from front to back. The sensing component (92) is connected to the outer wall of the connector (7). The circulating water pressure is converted into mechanical motion through the sensing component (92) to control the rotation of the rotating component (93). A toggle block (95) is installed on the knob of the frequency converter (94).

6. A high-rise direct-connection heating device according to claim 5, characterized in that, The sensing assembly (92) includes a wave lamp tube (921) installed on the outer wall of the rear connector (7), and a sector gear (922) is installed on the front side of the inner cavity of the second housing (91) by a pin. The top of the sector gear (922) is connected to the top of the wave lamp tube (921) by a second connecting rod (923).

7. A high-rise direct-connection heating device according to claim 6, characterized in that, The wave lamp tube (921) is semi-circular in shape.

8. A high-rise direct-connection heating device according to claim 7, characterized in that, The rotating assembly (93) includes a rotating shaft (931) mounted on the rear side of the inner cavity of the second housing (91) via a bearing. A spur gear (932) and a turntable (933) are sequentially mounted on the outer wall of the rotating shaft (931) from front to back. The spur gear (932) meshes with a sector gear (922). A buffer groove (934) is provided on the side wall of the turntable (933), and a lever (95) is located in the inner cavity of the buffer groove (934).

9. A high-rise direct-connection heating device according to claim 8, characterized in that, The transmission ratio between the sector gear (922) and the spur gear (932) is less than 1.

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