Circulating heating water pipe thawing machine

Abstract

The utility model discloses a circulating heating water pipe unfreezing machine, and belongs to frozen pipe unfreezing equipment. The circulating heating water pipe unfreezing machine comprises a water storage tank, a water heating unit, a hot water pumping unit, a control unit, a hot water injection hose and a water return hose, the water heating unit and the hot water pumping unit are respectively and electrically connected with the control unit, the water heating unit is arranged in the water storage tank, and the water inlet end of the hot water pumping unit is connected to the interior of the water storage tank. The water outlet end of the hot water pumping unit is connected with the near end of the hot water injection hose, the far end of the hot water injection hose is used for being placed into an inlet of a to-be-unfrozen pipeline and being fed into the to-be-unfrozen pipeline, the pipe diameter of the hot water injection hose is smaller than that of the water return hose, and the near end of the water return hose is connected to the water storage tank. The far end of the water return hose is used for being connected with a backflow opening of a to-be-unfrozen pipeline. Heated hot water in the water storage tank is injected into a freezing area in the pipeline through the hot water injection hose, the hot water directly makes contact with ice for heat exchange, and the unfreezing speed is high.

Description

Technical Field

[0001] The utility model relates to a pipeline thawing machine, more specifically, to a circulating heating water pipe thawing machine. Background Art

[0002] There is a big temperature difference between the southern and northern regions in winter. The lowest temperature in most southern regions is around 0℃ in winter. Therefore, the anti-freezing measures for water pipes in the southern regions are often weak, and the water pipes entering many old communities are exposed. In recent years, with the increasing number of extreme weather, the winter temperature in many southern regions, especially near the Yangtze River Basin, has been below 0℃ and the number of days with low temperatures has increased. As a result, many water supply pipes that lack anti-freezing measures have been frozen and cut off, seriously affecting the normal water use of residents, and there are more and more complaints about water use.

[0003] A search of relevant pipe thawing technologies revealed that a common thawing idea is to wrap a heating device on the outside of the frozen pipe and use electric heating wire heating, electromagnetic heating, and microwave heating to thaw the pipe. However, this thawing method has obvious defects and lacks practicality in the thawing of tap water pipes. The freezing of water supply pipes is often localized, and some frozen pipes are long and have complex pipe layouts. The above-mentioned wrapping and heating method cannot accurately act on the frozen position, and many complex pipes make it impossible to wrap the pipes. Some pipes have an insulation layer on the outside, and external heat is difficult to quickly transfer to the inside of the pipe. Therefore, the thawing efficiency is very low and is greatly affected by environmental factors.

[0004] Directly injecting hot water into the frozen pipe to transfer heat to the ice to melt it (direct thawing method) is currently a more efficient thawing method. The patent application for "Water Heat Conductive Pipeline De-icing Device" disclosed in China Patent No. ZL201320195280.7 (authorization announcement date is October 2, 2013) coincides with the above-mentioned direct thawing method. It introduces hot water into the frozen surface of the frozen pipe through a water pipe, and the heat of the water is directly transferred to the ice to melt the ice. The replaced cold water is reheated and recycled, which saves time and effort in thawing the pipe. However, this patent application only considers the thawing of underground horizontal pipes, and is not very applicable to household risers that are easily frozen due to exposure. Specifically: In this patent solution, cold water reflux is achieved through a deflector. When applied to the thawing of household risers, the height of the riser is relatively high, and the large cutoff position is at a high level. Using the deflector for reflux requires the entire device to be close to the riser cutoff, which is difficult to operate in practice. In addition, it can only thaw one pipe at a time, and cannot thaw multiple frozen pipes in the same area, so the thawing efficiency in the same area is not high; and it is used in a single way with frozen pipes, which makes it difficult to handle the thawing of pipes with different diameters and different locations. Due to the complexity of the environment in which the pipes need to be thawed, the flexibility and wide applicability of the thawing machine are the key manifestations of its value. Summary of the invention

[0005] 1. Technical problems to be solved by the utility model

[0006] The utility model aims to overcome the above-mentioned shortcomings of the existing pipe thawing devices and provide a circulating heating water pipe thawing machine. The technical solution of the utility model is adopted, and the hot water heated in the water storage tank is injected into the frozen area in the pipe by using a hot water injection hose. The hot water directly contacts the ice for heat exchange, and the thawing speed is fast; the melted ice water is quickly replaced by the hot water and flows back to the water storage tank through the return hose for heating and recycling, thereby reducing the water consumption; and the water injection and return both adopt hoses, which are convenient to connect with the pipe to be thawed and flexible to operate, and can be used for thawing pipes in more complex environments, and has wide applicability; the diameter of the water injection hose is smaller than the diameter of the water return hose, and the water return is fast and smooth, so that the water injection can have a certain water pressure to impact the ice layer, further improving the pipe thawing efficiency.

[0007] 2. Technical solution

[0008] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0009] The utility model discloses a circulating heating water pipe thawing machine, comprising a water storage tank, a water heating unit, a hot water pumping unit, a control unit, a hot water injection hose and a return hose, wherein the water heating unit and the hot water pumping unit are electrically connected to the control unit respectively, the water heating unit is arranged in the water storage tank, the water inlet end of the hot water pumping unit is connected to the inside of the water storage tank, the water outlet end of the hot water pumping unit is connected to the proximal end of the hot water injection hose, the distal end of the hot water injection hose is used to be inserted into the inlet of the pipe to be thawed and sent into the inside of the pipe to be thawed, the pipe diameter of the hot water injection hose is smaller than the pipe diameter of the return hose, the proximal end of the return hose is connected to the water storage tank, and the distal end of the return hose is used to be connected to the reflux port of the pipe to be thawed.

[0010] Furthermore, the water heating unit includes an electric heating tube and a temperature sensor, and both the electric heating tube and the temperature sensor are electrically connected to the control unit.

[0011] Furthermore, the hot water pumping unit includes a hot water pump, a hot water main pipe, a hot water branch pipe, a valve and a water injection interface. The hot water pump is electrically connected to the control unit, the water inlet of the hot water pump is connected to the inside of the water tank, and the water outlet of the hot water pump is connected to the hot water branch pipe through the hot water main pipe. The hot water branch pipe has at least two branches, each of which is provided with a valve and a water injection interface for connecting to the proximal end of the hot water injection hose.

[0012] Furthermore, the control unit includes a cabinet, a control panel, a control switch, a thermostat and a control circuit, the cabinet is fixed on the water tank, the control panel is installed on the cabinet, the control switch is arranged on the control panel, and the thermostat and the control circuit are arranged in the cabinet.

[0013] Furthermore, a water return interface for connecting to the proximal end of a water return hose is also provided on the upper portion of the water storage tank.

[0014] Furthermore, a water return pan is provided on the top of the water storage tank, the water return interface is provided on the side wall of the water return pan, and a water discharge hole connected to the water storage tank is provided at the bottom of the water return pan.

[0015] Furthermore, the distal end of the water return hose is butt-connected to the pipe opening of the pipe to be thawed, and the distal end of the hot water injection hose penetrates into the water return hose from the water return interface and is sent into the pipe to be thawed.

[0016] Furthermore, it also includes a three-way joint for connecting the pipe to be thawed, the three-way joint is installed at the pipe mouth of the pipe to be thawed, the distal end of the hot water injection hose is sent into the interior of the pipe to be thawed through the straight-through port of the three-way joint, and the distal end of the return water hose is connected to the bypass port of the three-way joint.

[0017] Furthermore, it also includes a pipe return device, which is installed at the pipe mouth of the pipe to be thawed. The pipe return device has an automatic pipe delivery mechanism electrically connected to the control unit, and the hot water injection hose is delivered into the interior of the pipe to be thawed through the automatic pipe delivery mechanism.

[0018] Furthermore, the pipe delivery return device includes an outer shell, a driving motor, a pipe delivery wheel, a pipe pressing wheel, a wheel frame, a compression spring, a pull rod and a handle. The lower part of the outer shell is provided with a connecting pipe for connecting to the pipe to be thawed, and one side of the connecting pipe has a bypass pipe opening for connecting to the far end of the return hose. The outer shell is provided with a pipe delivery wheel and a pipe pressing wheel arranged oppositely, and the hot water injection hose passes through and is clamped between the pipe delivery wheel and the pipe pressing wheel. The pipe delivery wheel is transmission-connected to the driving motor, and the pipe pressing wheel is arranged on the wheel frame. A pull rod is provided on the side of the wheel frame away from the pipe delivery wheel, and a handle is provided on the end of the pull rod extending out of the outer shell. The compression spring is sleeved on the pull rod, one end of the compression spring abuts against the wheel frame, and the other end abuts against the outer shell, so that the pipe pressing wheel has an elastic tendency to move toward the side of the pipe delivery wheel.

[0019] 3. Beneficial effects

[0020] Compared with the existing known technologies, the technical solution provided by the utility model has the following beneficial effects:

[0021] (1) The utility model is a circulating heating water pipe thawing machine, which includes a water storage tank, a water heating unit, a hot water pumping unit, a control unit, a hot water injection hose and a return hose. The water heating unit and the hot water pumping unit are electrically connected to the control unit respectively. The water heating unit is arranged in the water storage tank. The water inlet end of the hot water pumping unit is connected to the inside of the water storage tank. The water outlet end of the hot water pumping unit is connected to the proximal end of the hot water injection hose. The distal end of the hot water injection hose is used to be placed in the inlet of the pipe to be thawed and sent into the inside of the pipe to be thawed. The diameter of the hot water injection hose is smaller than the diameter of the return hose. The proximal end of the return hose is connected to the water storage tank. The distal end of the return hose is used to be connected to the inlet of the pipe to be thawed. The hot water in the water tank is directly in contact with the ice for heat exchange, and the thawing speed is fast; the melted ice water is quickly replaced by the hot water and flows back to the water tank through the return hose for heating and recycling, which reduces the water consumption; and both water injection and return use hoses, the length of which can be selected according to actual needs, which is convenient to connect with the pipe to be thawed and flexible to operate, and can be used for thawing pipes in more complex environments, with a wide range of applicability; the diameter of the water injection hose is smaller than that of the water return hose, and the water return is fast and smooth, so that the water injection can have a certain water pressure to impact the ice layer, further improving the pipe thawing efficiency.

[0022] (2) The utility model provides a circulating heating water pipe thawing machine, wherein the water heating unit includes an electric heating pipe and a temperature sensor, and both the electric heating pipe and the temperature sensor are electrically connected to the control unit, so that the heating temperature can be controlled and the preheating speed is fast.

[0023] (3) The utility model is a circulating heating water pipe thawing machine, whose hot water pumping unit includes a hot water pump, a hot water main pipe, a hot water branch pipe, a valve and a water injection interface. The hot water pump is electrically connected to the control unit. The water inlet of the hot water pump is connected to the inside of the water storage tank. The water outlet of the hot water pump is connected to the hot water branch pipe through the hot water main pipe. The hot water branch pipe has at least two branches, each of which is provided with a valve and a water injection interface for connecting to the proximal end of the hot water injection hose. Each water injection interface can be independently controlled by the valve, so that the water pipe thawing machine can thaw multiple pipes at the same time, realizing the thawing of multiple frozen pipes in the same area, and better energy saving.

[0024] (4) The utility model provides a circulating heating water pipe thawing machine, whose control unit includes a cabinet, a control panel, a control switch, a thermostat and a control circuit. The thawing machine is controlled by the control panel, which is easy to operate. The electrical components are protected by the cabinet to avoid damage or leakage caused by contact with water. The control unit is integrated on the thawing machine to form an integral device, which is convenient for carrying the thawing machine.

[0025] (5) The utility model provides a circulating heating water pipe thawing machine, in which the upper part of the water storage tank is also provided with a return water interface for connecting to the proximal end of the return water hose, thereby ensuring a stable connection between the return water hose and the water storage tank; further, a return water pan is also provided on the top of the water storage tank, and the return water interface is provided on the side wall of the return water pan. The bottom of the return water pan is provided with a drain hole connected to the water storage tank, so that the return water situation can be easily observed to ensure the normal operation of the thawing machine.

[0026] (6) The utility model provides a circulating heating water pipe thawing machine, in which the far end of the return hose is butt-connected to the pipe mouth of the pipe to be thawed, and the far end of the hot water injection hose is inserted from the return interface into the return hose and sent into the pipe to be thawed. For the pipe to be thawed that is compatible with the diameter of the return hose, the hot water injection hose can be inserted into the return hose and directly butt-connected to the pipe to be thawed without the need for additional accessories. The utility model is suitable for occasions where the operating position is close to the pipe mouth of the pipe to be thawed.

[0027] (7) The utility model provides a circulating heating water pipe thawing machine, which also includes a three-way joint for connecting the pipe to be thawed. For frozen pipes of different diameters, three-way joints of various specifications can be matched so that the return hose can be connected to frozen pipes of different diameters.

[0028] (8) The utility model provides a circulating heating water pipe thawing machine, which also includes a pipe feeding reflux device, which is installed at the pipe mouth of the pipe to be thawed. The pipe feeding reflux device is provided with an automatic pipe feeding mechanism electrically connected to the control unit. The hot water injection hose is fed into the interior of the pipe to be thawed through the automatic pipe feeding mechanism, which can realize automatic pipe feeding of the hot water injection hose, so that the hot water injection hose can always contact the ice layer, making thawing more efficient and labor-saving operation.

[0029] (9) The utility model is a circulating heating water pipe thawing machine, whose pipe feeding return device includes a shell, a driving motor, a pipe feeding wheel, a pipe pressing wheel, a wheel frame, a compression spring, a pull rod and a handle. The pipe feeding wheel and the pipe pressing wheel are used to elastically clamp the hot water injection hose, and the friction between the pipe feeding wheel and the hose is used to flexibly feed the pipe. The structure is simple and the pipe feeding is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a three-dimensional structural schematic diagram of a circulating heating water pipe thawing machine of the utility model from one angle;

[0031] Figure 2 This is a three-dimensional structural schematic diagram of a circulating heating water pipe thawing machine of the utility model from another angle;

[0032] Figure 3 This is a schematic diagram of the open state of a control panel of a circulating heating water pipe thawing machine of the utility model;

[0033] Figure 4 This is a schematic diagram of the thawing principle of Example 1 of the utility model;

[0034] Figure 5 This is a schematic diagram of the thawing principle of Example 2 of the utility model;

[0035] Figure 6 This is a schematic diagram of the thawing principle of Example 3 of the utility model;

[0036] Figure 7 for Figure 6 An enlarged schematic diagram of the internal structure of the center pipe reflux device.

[0037] Explanation of the symbols in the schematic diagram:

[0038] 1. Water storage tank; 1-1. Water return interface; 1-2. Water return pan; 1-3. Drain hole; 1-4. Drain valve; 2. Water heating unit; 2-1. Electric heating pipe; 2-2. Temperature sensor; 3. Hot water pumping unit; 3-1. Hot water pump; 3-2. Hot water main pipe; 3-3. Hot water branch pipe; 3-4. Valve; 3-5. Water injection interface; 4. Control unit; 4-1. Cabinet; 4-2. Control panel; 4-3. Control switch; 4- 4. Thermostat; 4-5. Control circuit; 5. Hot water injection hose; 6. Return hose; 7. Freezing pipe; 7-1. Freezing zone; 8. Tee joint; 8-1. Water bucket; 9. Feed pipe return device; 9-1. Housing; 9-1-1. Connecting pipe; 9-1-2. Bypass pipe outlet; 9-2. Driving motor; 9-3. Feeding wheel; 9-4. Pressing wheel; 9-5. Wheel frame; 9-6. Compression spring; 9-7. Pull rod; 9-8. Handle. DETAILED DESCRIPTION

[0039] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the drawings and embodiments.

[0040] [Example 1]

[0041] Combination Figures 1 to 3As shown, a circulating heating water pipe thawing machine of the present embodiment includes a water storage tank 1, a water heating unit 2, a hot water pumping unit 3, a control unit 4, a hot water injection hose 5 and a return hose 6. The water storage tank 1 can be a container made of stainless steel as the main part of the thawing machine. The water heating unit 2 and the hot water pumping unit 3 are electrically connected to the control unit 4 respectively, and the control unit 4 controls the water heating unit 2 and the hot water pumping unit 3, mainly controlling the start and stop of the water heating unit 2 and the hot water pumping unit 3 and the working power; the water heating unit 2 is arranged in the water storage tank 1, and is used to heat the water in the water storage tank 1; the water inlet end of the hot water pumping unit 3 is connected to the inside of the water storage tank 1, the water outlet end of the hot water pumping unit 3 is connected to the proximal end of the hot water injection hose 5, and the distal end of the hot water injection hose 5 is used to be placed in the inlet of the pipe to be thawed and sent into the inside of the pipe to be thawed, and the hot water pumping unit 3 can transport the hot water in the water storage tank 1 to the inside of the pipe to be thawed through the hot water injection hose 5. The diameter of the hot water injection hose 5 is smaller than that of the return hose 6. The proximal end of the return hose 6 is connected to the water storage tank 1, and the distal end of the return hose 6 is used to connect to the return port of the pipe to be thawed. The return hose 6 with a larger diameter can have a larger return flow rate and a smoother return. The thinner hot water injection hose 5 can generate a certain flushing water pressure. This hot water pressure directly impacts the ice layer in the frozen pipe, which can melt the ice more efficiently and further improve the pipe thawing efficiency. A circulating heating water pipe thawing machine of this embodiment uses a hot water injection hose 5 to inject the hot water heated in the water storage tank 1 into the frozen area in the pipe. The hot water directly contacts the ice for heat exchange, and the thawing speed is fast. The melted ice water is quickly replaced by the hot water and flows back to the water storage tank 1 through the return hose 6 for heating and recycling, which reduces the water consumption. In addition, both water injection and return water use hoses, and the length can be selected according to actual needs. It is convenient to connect with the pipe to be thawed, and the operation is flexible. It can be used for thawing pipes in more complex environments and has a wide range of applicability.

[0042] catch Figures 1 to 3 As shown, specifically in this embodiment, the water heating unit 2 includes an electric heating tube 2-1 and a temperature sensor 2-2, and the electric heating tube 2-1 and the temperature sensor 2-2 are both electrically connected to the control unit 4. The heating portion of the electric heating tube 2-1 is located at a lower position inside the water storage tank 1 to ensure that the heating portion of the electric heating tube 2-1 is immersed in water, and is used to heat the water in the water storage tank 1. The temperature sensor 2-2 is used to detect the temperature of the water in the water storage tank 1, and feed the detected temperature signal back to the control unit 4, and the control unit 4 controls the working state of the electric heating tube 2-1. The electric heating tube 2-1 can be provided with multiple groups, which can be specifically determined according to the volume size of the water storage tank 1. By using this water heating unit 2, heating temperature control can be achieved, and the preheating speed is fast.

[0043] The hot water pumping unit 3 includes a hot water pump 3-1, a hot water main pipe 3-2, a hot water branch pipe 3-3, a valve 3-4 and a water injection interface 3-5. The hot water pump 3-1 is electrically connected to a control unit 4, and the control unit 4 controls the working state of the hot water pump 3-1. The water inlet of the hot water pump 3-1 is connected to the inside of the water storage tank 1, and the water outlet of the hot water pump 3-1 is connected to the hot water branch pipe 3-3 through the hot water main pipe 3-2. The hot water branch pipe 3-3 has at least two branches, each of which is provided with a valve 3-4 and a water injection interface 3-5 for connecting to the proximal end of the hot water injection hose 5. That is, each branch of the hot water branch pipe 3-3 can be connected to a hot water injection hose 5, and can be controlled by an independent valve 3-4. To use which hot water injection hose 5, it is only necessary to open the corresponding valve 3-4. The water in the water storage tank 1 can be transported to the hot water injection hose 5 through the hot water pump 3-1, and then used to thaw the frozen pipe. By using the hot water pumping unit 3, the water pipe thawing machine can thaw multiple pipes at the same time, thereby achieving the thawing of multiple frozen pipes in the same area, and achieving better energy saving.

[0044] The control unit 4 includes a cabinet 4-1, a control panel 4-2, a control switch 4-3, a thermostat 4-4 and a control circuit 4-5. The cabinet 4-1 is fixed on the water storage tank 1, the control panel 4-2 is installed on the cabinet 4-1, the control switch 4-3 is arranged on the control panel 4-2, and the thermostat 4-4 and the control circuit 4-5 are arranged in the cabinet 4-1. The thermostat 4-4 is used to control the heating temperature, and the control circuit 4-5 is used to power the thawing machine and control each execution unit. Specifically, the control switch 4-3 includes a heating switch and a water pump switch. The heating switch can control the start and stop of the above-mentioned electric heating pipe 2-1, and the water pump switch can control the start and stop of the above-mentioned hot water pump 3-1. The control panel 4-2 can be used as the upper cover of the cabinet 4-1, which can be installed on one side of the cabinet 4-1 through a hinge, and it is convenient to open it to maintain the electrical components in the cabinet 4-1. The control circuit 4-5 can include a leakage protection switch, etc. to ensure the safety of electricity use. The control unit is used to control the thawing machine through the control panel 4-2, which is easy to operate, and the electrical components are protected by the cabinet 4-1 to avoid damage or leakage caused by contact with water; and the control unit is integrated on the thawing machine to form an integral device, which is convenient for carrying the thawing machine. As for the circuit connection relationship of each electrical component in the thawing machine, it can be obtained according to the control needs and the existing circuit design principles, and will not be described in detail here.

[0045] In addition, in this embodiment, the upper part of the water storage tank 1 is also provided with a return water interface 1-1 for connecting with the proximal end of the return water hose 6. The number of the return water interfaces 1-1 is equal to the number of the branch pipes of the hot water branch pipe 3-3. The return water interface 1-1 is used to connect the return water hose 6, which ensures the stable connection between the return water hose 6 and the water storage tank 1. Furthermore, the top of the water storage tank 1 is also provided with a return water tray 1-2. The return water interface 1-1 is arranged on the side wall of the return water tray 1-2. The bottom of the return water tray 1-2 is provided with a water drop hole 1-3 connected to the water storage tank 1. The water returned by the return water hose 6 flows into the return water tray 1-2, and then flows into the water storage tank 1 through the water drop hole 1-3, so that the return water situation can be easily observed to ensure the normal operation of the thawing machine.

[0046] Figure 4 Shows a thawing principle of a circulating heating water pipe thawing machine, refer to Figure 4 As shown, a circulating heating water pipe thawing machine of this embodiment has a return hose 6 whose distal end is docked with the pipe mouth of the pipe to be thawed, and the distal end of the hot water injection hose 5 is inserted from the return water interface 1-1 into the return hose 6 and sent into the pipe to be thawed. For the pipe to be thawed that matches the diameter of the return hose 6, the hot water injection hose 5 can be inserted into the return hose 6, and the return hose 6 can be directly docked with the pipe to be thawed without the need for additional accessories. It is suitable for occasions where the operating position is close to the pipe mouth of the pipe to be thawed. In order to facilitate the insertion of the hot water injection hose 5 into the return hose 6 and the insertion of the injection hose, the hot water branch pipe 3-3 can be set to a horizontal direction through an elbow, and the injection interface 3-5 can be made opposite to each return water interface 1-1. Figure 4 Take the frozen pipe 7 shown in the figure as an example. After the water supply is cut off due to the freezing of the riser, the pipe valve can be closed first, and then the pipe can be cut off at a suitable position. The hot water injection hose 5 is inserted from the return water interface 1-1 into the return water hose 6 and then passed out from the far end of the return water hose 6. The far end of the hot water injection hose 5 is inserted into the frozen pipe 7, and the return water hose 6 is connected to the pipe mouth of the frozen pipe 7. A certain amount of water is poured into the water storage tank 1 in advance, and the water heating unit 2 is started for preheating. After the set water temperature is reached, the hot water pumping unit 3 is started, and hot water is injected into the frozen pipe 7 while the hot water injection hose 5 is sent in, so that the far end of the hot water injection hose 5 is always close to the frozen area 7-1 of the frozen pipe 7, so that the frozen area 7-1 is quickly melted, and the ice water produced by melting is quickly replaced by hot water, and flows back to the water storage tank 1 through the return water hose 6 for repeated use. In this way, a small amount of water can be used for thawing treatment in a cycle. After the entire frozen area 7-1 is thawed, remove the hot water injection hose 5 and the return hose 6, connect the cut pipes and take antifreeze measures (such as wrapping with insulation cotton, etc.), and then open the water supply valve.

[0047] In addition, in order to facilitate the discharge of water in the water storage tank 1, a drain valve 1-4 is also provided at the lower part of one side of the water storage tank 1. In order to facilitate the carrying of the thawing machine, a carrying handle can be provided on the water storage tank 1 or a movable caster can be provided at the bottom of the water storage tank 1.

[0048] [Example 2]

[0049] The basic structure and working principle of the circulating heating water pipe thawing machine of this embodiment are the same as those of the embodiment 1, except that:

[0050] Reference Figure 5 As shown, in this embodiment, a three-way joint 8 for connecting the pipe to be thawed is also included. The three-way joint 8 is installed at the pipe mouth of the pipe to be thawed. The distal end of the hot water injection hose 5 is sent into the pipe to be thawed through the straight-through port of the three-way joint 8, and the distal end of the return hose 6 is connected to the bypass port of the three-way joint 8. The three-way joint 8 can be a T-shaped tee, and its bypass port is connected to the distal end of the return hose 6. The hot water injection hose 5 can be directly inserted into the frozen pipe 7 from the upper port of the three-way joint 8. The advantage of this design is that the hot water injection hose 5 is separated from the return hose 6, which can reduce the heat loss of the hot water injection hose 5. In addition, for frozen pipes of different diameters, a variety of specifications of three-way joints 8 can be matched, so that the return hose 6 can be connected to frozen pipes of different diameters, and it is also convenient to perform pipe delivery operations from the pipe mouth of the frozen pipe 7. A water bucket 8-1 can also be set at the upper pipe mouth of the three-way joint 8 to prevent water from overflowing when the return water is blocked.

[0051] by Figure 5 Take the frozen pipe 7 shown in the figure as an example. After the water supply is cut off due to the freezing of the riser, the pipe valve is first closed, and then the pipe is cut off at a suitable position. According to the pipe diameter of the frozen pipe 7, a suitable three-way joint 8 is selected, and the three-way joint 8 is installed on the pipe mouth of the frozen pipe 7. Then, the return hose 6 is connected to the bypass port of the three-way joint 8, and the hot water injection hose 5 is inserted into the frozen pipe 7 from the upper part of the three-way joint 8. After the water in the water storage tank 1 is heated to the set temperature, the hot water pumping unit 3 is started, and hot water is injected into the frozen pipe 7 while the hot water injection hose 5 is sent in, so that the far end of the hot water injection hose 5 is always close to the frozen area 7-1 of the frozen pipe 7, so that the frozen area 7-1 is quickly melted, and the ice water produced by melting is quickly replaced by hot water, and flows back to the water storage tank 1 through the return hose 6 for reuse. After the entire frozen area 7-1 is melted, the hot water injection hose 5 and the three-way joint 8 are removed, and the cut pipe is connected and antifreeze measures (such as wrapping with insulation cotton, etc.) are taken, and then the water supply valve is opened.

[0052] [Example 3]

[0053] The basic structure and working principle of the circulating heating water pipe thawing machine of this embodiment are the same as those of the embodiment 2, except that:

[0054] Reference Figure 6 As shown, in this embodiment, a pipe return device 9 is also included. The pipe return device 9 is installed at the pipe mouth of the pipe to be thawed. The pipe return device 9 has an automatic pipe delivery mechanism electrically connected to the control unit 4. The hot water injection hose 5 is sent into the interior of the pipe to be thawed through the automatic pipe delivery mechanism, which can realize the automatic pipe delivery of the hot water injection hose 5, so that the hot water injection hose 5 can always contact the ice layer, and the thawing is more efficient, replacing manual pipe delivery, and the operation is labor-saving. In this embodiment, the control switch 4-3 also includes a pipe delivery switch for controlling the automatic pipe delivery mechanism.

[0055] Figure 7 A specific structural diagram of the pipe return device 9 is given in FIG. Figure 7As shown, the pipe return device 9 includes a shell 9-1, a driving motor 9-2, a pipe delivery wheel 9-3, a pipe pressing wheel 9-4, a wheel frame 9-5, a compression spring 9-6, a pull rod 9-7 and a handle 9-8. The lower part of the shell 9-1 is provided with a connecting pipe 9-1-1 for connecting to the pipe to be thawed. The size of the connecting pipe 9-1-1 can also be of various different specifications. One side of the connecting pipe 9-1-1 has a bypass pipe port 9-1-2 for connecting to the far end of the return hose 6. The shell 9-1 is provided with a pipe delivery wheel 9-3 and a pipe pressing wheel 9-4 arranged opposite to each other. The hot water injection hose 5 passes through and is sandwiched between the pipe delivery wheel 9-3 and the pipe pressing wheel 9-4. The pipe delivery wheel 9-3 and the pipe pressing wheel 9-4 are provided to the hot water injection hose 5. A groove wheel can be used to prevent the hot water injection hose 5 from slipping off; the pipe delivery wheel 9-3 is connected to the driving motor 9-2 in a transmission manner, the driving motor 9-2 is fixed on the housing 9-1, and is controlled by the control unit 4 to drive the pipe delivery wheel 9-3 to rotate. The pipe pressing wheel 9-4 is arranged on the wheel frame 9-5, the wheel frame 9-5 is guided and matched with the housing 9-1, and a pull rod 9-7 is arranged on the side of the wheel frame 9-5 away from the pipe delivery wheel 9-3. A handle 9-8 is arranged on the end of the pull rod 9-7 extending out of the housing 9-1. A compression spring 9-6 is sleeved on the pull rod 9-7, one end of the compression spring 9-6 abuts on the wheel frame 9-5, and the other end abuts on the housing 9-1, so that the pipe pressing wheel 9-4 has an elastic tendency to move to the side of the pipe delivery wheel 9-3. One pipe delivery wheel 9-3 can be set, and two pipe pressing wheels 9-4 can be set. The pipe delivery wheel 9-3 is located on the vertical line at 1 / 2 of the wheel spacing of the two pipe pressing wheels 9-4, so that the pipe delivery movement is more stable. When placing the hot water injection hose 5, the pull rod 9-7 can be pulled outward by the handle 9-8, so that the pipe pressing wheel 9-4 is away from the pipe delivery wheel 9-3, and the distance between the two is increased to facilitate the insertion of the hot water injection hose 5; at this time, the compression spring 9-6 is compressed, and the handle 9-8 is released, so that the pipe pressing wheel 9-4 clamps the hot water injection hose 5 under the action of the compression spring 9-6, and the friction between the pipe delivery wheel 9-3 and the hot water injection hose 5 is increased, and the driving motor 9-2 is started to drive the pipe delivery wheel 9-3 to rotate, and the hot water injection hose 5 is driven to move by friction. The above-mentioned pipe delivery return device 9 is adopted, and the hot water injection hose 5 is elastically clamped by the pipe delivery wheel 9-3 and the pipe pressing wheel 9-4, and the friction between the pipe delivery wheel 9-3 and the hose is used to flexibly deliver the pipe, which has a simple structure and stable pipe delivery.

[0056] by Figure 6Take the frozen pipe 7 shown in the figure as an example. After the water supply is cut off due to the freezing of the vertical pipe, the pipe valve is first closed, and then the pipe is cut off at a suitable position. According to the diameter of the frozen pipe 7, a suitable pipe return device 9 is selected, and the pipe return device 9 is installed on the pipe mouth of the frozen pipe 7. Then, the return hose 6 is connected to the bypass pipe mouth 9-1-2 of the three-way joint 8, and the hot water injection hose 5 is inserted into the frozen pipe 7 from the upper part of the pipe return device 9. After the water in the water storage tank 1 is heated to the set temperature, the hot water pumping unit 3 is started, and the pipe return device 9 is started at the same time. Hot water is injected into the frozen pipe 7 while the hot water injection hose 5 is automatically fed in, so that the far end of the hot water injection hose 5 is always close to the frozen area 7-1 of the frozen pipe 7, so that the frozen area 7-1 is quickly melted, and the ice water produced by melting is quickly replaced by hot water, and flows back to the water storage tank 1 through the return hose 6 for reuse. After the entire frozen area 7-1 is thawed, remove the hot water injection hose 5 and the pipe return device 9, connect the cut pipes and take antifreeze measures (such as wrapping with insulation cotton, etc.), and then open the water supply valve.

[0057] The utility model is a circulating heating water pipe thawing machine. The hot water heated in the water storage tank is injected into the frozen area in the pipe by a hot water injection hose. The hot water directly contacts the ice for heat exchange, and the thawing speed is fast. The melted ice water is quickly replaced by the hot water and flows back to the water storage tank through the return hose for heating and recycling, which reduces the water consumption. The water injection and return hoses are both connected to the pipes to be thawed, which is convenient to operate and can be used for thawing pipes in more complex environments. It has a wide range of applicability. The diameter of the water injection hose is smaller than that of the return hose, and the return water is fast and smooth, so that the water injection can have a certain water pressure to impact the ice layer, further improving the efficiency of pipe thawing. In addition, the utility model has a variety of means for connecting with frozen pipes, which can cope with the thawing of pipes with different diameters and different positions.

[0058] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A circulating heating water pipe thawing machine, characterized in that: The invention comprises a water storage tank (1), a water heating unit (2), a hot water pumping unit (3), a control unit (4), a hot water injection hose (5) and a water return hose (6); the water heating unit (2) and the hot water pumping unit (3) are electrically connected to the control unit (4) respectively; the water heating unit (2) is arranged in the water storage tank (1); the water inlet end of the hot water pumping unit (3) is connected to the inside of the water storage tank (1); the water outlet end of the hot water pumping unit (3) is connected to the proximal end of the hot water injection hose (5); the distal end of the hot water injection hose (5) is used to be placed in the inlet of the pipe to be thawed and sent into the inside of the pipe to be thawed; the diameter of the hot water injection hose (5) is smaller than the diameter of the water return hose (6); the proximal end of the water return hose (6) is connected to the water storage tank (1); and the distal end of the water return hose (6) is used to be connected to the return port of the pipe to be thawed.

2. The circulating heating water pipe thawing machine according to claim 1, characterized in that: The water heating unit (2) comprises an electric heating tube (2-1) and a temperature sensor (2-2), and both the electric heating tube (2-1) and the temperature sensor (2-2) are electrically connected to a control unit (4).

3. The circulating heating water pipe thawing machine according to claim 1, characterized in that: The hot water pumping unit (3) comprises a hot water pump (3-1), a hot water main pipe (3-2), a hot water branch pipe (3-3), a valve (3-4) and a water injection interface (3-5); the hot water pump (3-1) is electrically connected to the control unit (4); the water inlet of the hot water pump (3-1) is connected to the inside of the water storage tank (1); the water outlet of the hot water pump (3-1) is connected to the hot water branch pipe (3-3) via the hot water main pipe (3-2); the hot water branch pipe (3-3) has at least two branch pipes, each of which is provided with a valve (3-4) and a water injection interface (3-5) for connecting to the proximal end of a hot water injection hose (5).

4. The circulating heating water pipe thawing machine according to claim 1, characterized in that: The control unit (4) comprises a cabinet (4-1), a control panel (4-2), a control switch (4-3), a temperature controller (4-4) and a control circuit (4-5); the cabinet (4-1) is fixed on the water storage tank (1); the control panel (4-2) is installed on the cabinet (4-1); the control switch (4-3) is arranged on the control panel (4-2); and the temperature controller (4-4) and the control circuit (4-5) are arranged in the cabinet (4-1).

5. The circulating heating water pipe thawing machine according to claim 1, characterized in that: The upper part of the water storage tank (1) is also provided with a water return interface (1-1) for connecting to the proximal end of a water return hose (6).

6. The circulating heating water pipe thawing machine according to claim 5, characterized in that: A water return pan (1-2) is also provided on the top of the water storage tank (1), the water return interface (1-1) is provided on the side wall of the water return pan (1-2), and a water discharge hole (1-3) connected to the water storage tank (1) is provided at the bottom of the water return pan (1-2).

7. The circulating heating water pipe thawing machine according to claim 6, characterized in that: The distal end of the water return hose (6) is butt-connected to the pipe opening of the pipe to be thawed, and the distal end of the hot water injection hose (5) passes through the water return interface (1-1) into the water return hose (6) and is sent into the pipe to be thawed.

8. The circulating heating water pipe thawing machine according to any one of claims 1 to 6, characterized in that: It also includes a three-way joint (8) for connecting the pipe to be thawed, the three-way joint (8) is installed at the pipe mouth of the pipe to be thawed, the far end of the hot water injection hose (5) is sent into the interior of the pipe to be thawed through the straight-through port of the three-way joint (8), and the far end of the return hose (6) is connected to the bypass port of the three-way joint (8).

9. The circulating heating water pipe thawing machine according to any one of claims 1 to 6, characterized in that: It also comprises a pipe return device (9), which is installed at the pipe mouth of the pipe to be thawed. The pipe return device (9) has an automatic pipe delivery mechanism electrically connected to the control unit (4), and the hot water injection hose (5) is delivered into the interior of the pipe to be thawed through the automatic pipe delivery mechanism.

10. The circulating heating water pipe thawing machine according to claim 9, characterized in that: The pipe return device (9) comprises a housing (9-1), a driving motor (9-2), a pipe delivery wheel (9-3), a pipe pressing wheel (9-4), a wheel frame (9-5), a compression spring (9-6), a pull rod (9-7) and a handle (9-8). The lower part of the housing (9-1) is provided with a connecting pipe (9-1-1) for connecting to a pipe to be thawed. One side of the connecting pipe (9-1-1) has a bypass pipe opening (9-1-2) for connecting to the far end of a return hose (6). The housing (9-1) is provided with a pipe delivery wheel (9-3) and a pipe pressing wheel (9-4) arranged opposite to each other. The hot water injection hose (5) is connected by the pipe delivery wheel (9-3) and the pipe pressing wheel (9-4). The tube pressing wheel (9-4) passes through and is sandwiched between the two, the tube delivery wheel (9-3) is transmission-connected to the driving motor (9-2), the tube pressing wheel (9-4) is arranged on the wheel frame (9-5), the side of the wheel frame (9-5) away from the tube delivery wheel (9-3) is provided with a pull rod (9-7), the end of the pull rod (9-7) extending out of the shell (9-1) is provided with a handle (9-8), the compression spring (9-6) is sleeved on the pull rod (9-7), one end of the compression spring (9-6) is against the wheel frame (9-5), and the other end is against the shell (9-1), so that the tube pressing wheel (9-4) has an elastic tendency to move toward the tube delivery wheel (9-3) side.

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