Double-effect energy-saving evaporator of heat pump

Abstract

The utility model discloses a double-effect energy-saving evaporator of a heat pump, which belongs to the technical field of evaporators, solves the problems that the temperature in an evaporation chamber is increased only through steam in a heating chamber and the evaporation efficiency is slow in the existing device, and comprises a first-effect heating chamber, and the other side of the first-effect heating chamber is communicated with a first-effect evaporation chamber through a first-effect steam pipe. A first pressurizing assembly is arranged on the first-effect evaporation chamber, the second-effect heating chamber and the first-effect evaporation chamber are the same in specification, a second pressurizing assembly with the same specification as the first pressurizing assembly is arranged on the second-effect heating chamber, and a first-effect electromagnetic valve, a first electromagnetic valve and a first-effect discharging valve are closed, then an air cylinder is started to push a pressing disc downwards, and the first-effect evaporation chamber and the second-effect evaporation chamber are heated. The pressure in the first-effect evaporation chamber can be increased, meanwhile, the boiling point of the solvent can be reduced, the evaporation rate of the solvent can be increased, the evaporation rate of the solvent in the second-effect evaporation chamber can be increased through the second pressurizing assembly, the purpose of increasing the evaporation rate of the solvent is achieved, and a high-concentration solute can be obtained rapidly.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a heat pump double-effect energy-saving evaporator. Background Art

[0002] Double-effect evaporators are used in industrial production processes such as chemical and light industries, and are also used in industrial wastewater treatment to concentrate a liquid mixture consisting of a non-volatile solute and a volatile solvent, evaporate the solvent by heating, and then obtain a high concentration of solute.

[0003] After searching, the application with patent application number CN201921435947.X discloses a double-effect evaporator, including a first-effect heating chamber, the upper and lower sides of the right part of the outer surface are respectively fixedly connected to a first-effect steam pipe and a first-effect discharge pipe, the upper right end of the first-effect discharge pipe is fixedly connected to a first-effect evaporation chamber, the upper end of the first-effect evaporation chamber is fixedly connected with a dredging and air guiding device, the lower right end of the dredging and air guiding device is fixedly connected with a second-effect heating chamber, the upper and lower right parts of the outer surface of the second-effect heating chamber are respectively fixedly connected with a second-effect steam pipe and a second-effect discharge pipe, the upper right end of the second-effect discharge pipe is fixedly connected with a second-effect evaporation chamber, and the upper end of the second-effect evaporation chamber is fixedly connected with a dredging and air guiding device;

[0004] Although the double-effect evaporator is provided with a dredging and air guiding device at the upper ends of the first-effect evaporation chamber and the second-effect evaporation chamber to scrape off the residual substances on the inner wall of the conducting pipe to prevent the substances in the steam from remaining on the inner wall of the conducting pipe, the double-effect evaporator only increases the temperature inside the evaporation chamber by heating the steam in the chamber, and the evaporation efficiency is slow.

[0005] Therefore, we proposed a heat pump double-effect energy-saving evaporator. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a heat pump double-effect energy-saving evaporator, which solves the problem that the prior device only increases the temperature inside the evaporation chamber by heating the steam in the chamber, resulting in low evaporation efficiency.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a heat pump double-effect energy-saving evaporator comprises a first-effect heating chamber, a water inlet pipe and a heat pump are fixedly installed on one side of the first-effect heating chamber, and the output end of the heat pump is connected to the first-effect heating chamber;

[0008] The other side of the first-effect heating chamber is connected to the first-effect evaporation chamber through a first-effect steam pipe, the first-effect evaporation chamber is provided with a first pressurizing assembly, the first-effect evaporation chamber is connected to the second-effect heating chamber through a first steam conduit, the second-effect heating chamber has the same specifications as the first-effect evaporation chamber, the second-effect heating chamber is provided with a second pressurizing assembly with the same specifications as the first pressurizing assembly, the second-effect heating chamber is connected to the second-effect evaporation chamber through a second-effect steam pipe, and the second-effect evaporation chamber is connected to the condenser through a second steam conduit;

[0009] The first pressurizing assembly comprises a cylinder fixedly mounted on the top surface of the first-effect evaporation chamber, the output end of the cylinder penetrates through the top surface of the first-effect evaporation chamber and is fixedly mounted with a pressure plate, the size of the pressure plate matches the inner diameter of the first-effect evaporation chamber, the arc surface of the first-effect evaporation chamber is fixedly sleeved with an elastic sealing ring, and the elastic sealing ring is in contact with the inner wall of the first-effect evaporation chamber;

[0010] Wherein, an elastic sealing ring is used to increase the sealing performance between the pressure plate and the inner wall of the first-effect evaporation chamber.

[0011] Preferably, a first-effect solenoid valve is fixedly installed in the middle of the first-effect steam pipe, and a first solenoid valve is fixedly installed at one end of the first steam conduit close to the first-effect evaporation chamber, wherein the flow rate of steam inside the first-effect heating chamber is conveniently controlled by the first-effect solenoid valve, and the flow rate of steam inside the first-effect evaporation chamber is conveniently controlled by the first solenoid valve.

[0012] Preferably, a second-effect solenoid valve is fixedly installed in the middle of the second-effect steam pipe, and a second solenoid valve is fixedly installed in the middle of the second steam conduit, wherein the second-effect solenoid valve is used to facilitate the control of the flow rate of steam inside the second-effect steam pipe, and the second solenoid valve is used to facilitate the control of the flow rate of steam inside the second-effect evaporation chamber.

[0013] Preferably, a first-effect discharge pipe and a second-effect discharge pipe are fixedly installed at the bottom ends of the first-effect evaporation chamber and the second-effect evaporation chamber, respectively, and a first-effect discharge valve and a second-effect discharge valve are fixedly installed in the middle parts of the first-effect discharge pipe and the second-effect discharge pipe, respectively, wherein the concentrated solute inside the first-effect evaporation chamber and the second-effect evaporation chamber is conveniently discharged through the first-effect discharge pipe, and the solute discharge rate is conveniently controlled through the first-effect discharge valve and the second-effect discharge valve.

[0014] Preferably, the top of the condenser is connected to the second-effect heating chamber through a return air pipe, an air pump is fixedly installed at one end of the return air pipe close to the condenser, and the input end of the air pump is connected to the condenser, and the output end of the air pump is connected to the return air pipe, and a drain pipe is fixedly installed at the bottom end of the condenser, wherein the steam inside the condenser can be discharged into the second-effect heating chamber through the return air pipe, and the water inside the condenser can be discharged conveniently through the drain pipe, and the air pump can accelerate the rate at which the steam inside the condenser enters the second-effect heating chamber, which is beneficial to maintaining the temperature inside the second-effect heating chamber.

[0015] The utility model provides a heat pump double-effect energy-saving evaporator. It has the following beneficial effects:

[0016] The heat pump double-effect energy-saving evaporator closes the first-effect solenoid valve, the first solenoid valve and the first-effect discharge valve, and then starts the cylinder to push the pressure plate downward, thereby compressing the space inside the first-effect evaporation chamber, thereby increasing the pressure inside the first-effect evaporation chamber, thereby increasing the temperature inside the first-effect evaporation chamber, and at the same time reducing the boiling point of the solvent, which is beneficial to accelerating the evaporation rate of the solvent. Similarly, by closing the second-effect solenoid valve, the second solenoid valve and the second-effect discharge valve, the evaporation rate of the solvent inside the second-effect evaporation chamber can be accelerated through the second pressurizing component, thereby achieving the purpose of accelerating the evaporation rate of the solvent, so as to quickly obtain a high-concentration solute, and solving the problem that the existing device only increases the temperature inside the evaporation chamber by heating the steam in the chamber, and the evaporation efficiency is slow. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a first-effect evaporation chamber of the utility model;

[0020] Figure 4 This is a schematic cross-sectional structural diagram of a first-effect evaporation chamber of the utility model.

[0021] In the figure: 1. first-effect heating chamber; 11. water inlet pipe; 12. heat pump; 13. first-effect steam pipe; 14. first-effect solenoid valve; 2. first-effect evaporation chamber; 21. first-effect discharge pipe; 22. first-effect discharge valve; 23. first steam duct; 24. first solenoid valve; 3. first pressurizing assembly; 31. cylinder; 32. pressure plate; 4. second-effect heating chamber; 41. second-effect steam pipe; 42. second-effect solenoid valve; 5. second-effect evaporation chamber; 51. second-effect discharge pipe; 52. second-effect discharge valve; 53. second steam duct; 54. second solenoid valve; 6. second pressurizing assembly; 7. condenser; 71. return air pipe; 72. drain pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] like Figure 1-4 As shown: it includes a first-effect heating chamber 1, a water inlet pipe 11 and a heat pump 12 are fixedly installed on one side of the first-effect heating chamber 1, the output end of the heat pump 12 is connected to the first-effect heating chamber 1, and the other side of the first-effect heating chamber 1 is connected to the first-effect evaporation chamber 2 through a first-effect steam pipe 13. The first-effect evaporation chamber 2 is provided with a first pressurizing component 3, and the first-effect evaporation chamber 2 is connected to the second-effect heating chamber 4 through a first steam conduit 23. The second-effect heating chamber 4 has the same specifications as the first-effect evaporation chamber 2, and the second-effect heating chamber 4 is provided with a second pressurizing component 6 with the same specifications as the first pressurizing component 3. The chamber 4 is connected to the second-effect evaporation chamber 5 through the second-effect steam pipe 41, and the second-effect evaporation chamber 5 is connected to the condenser 7 through the second steam conduit 53. The first pressurizing assembly 3 includes a cylinder 31 fixedly installed on the top surface of the first-effect evaporation chamber 2, and the output end of the cylinder 31 passes through the top surface of the first-effect evaporation chamber 2 and is fixedly installed with a pressure plate 32. The size of the pressure plate 32 matches the inner diameter of the first-effect evaporation chamber 2. The arc surface of the first-effect evaporation chamber 2 is fixedly sleeved with an elastic sealing ring, and the elastic sealing ring is fitted with the inner wall of the first-effect evaporation chamber 2. The middle part of the first-effect steam pipe 13 is fixedly installed with a first-effect solenoid valve 1 4, a first electromagnetic valve 24 is fixedly installed at one end of the first steam conduit 23 close to the first-effect evaporation chamber 2, a second-effect electromagnetic valve 42 is fixedly installed in the middle of the second-effect steam pipe 41, a second electromagnetic valve 54 is fixedly installed in the middle of the second steam conduit 53, a first-effect discharge pipe 21 and a second-effect discharge pipe 51 are fixedly installed at the bottom ends of the first-effect evaporation chamber 2 and the second-effect evaporation chamber 5, respectively, and a first-effect discharge valve 22 and a second-effect discharge valve 52 are fixedly installed in the middle of the first-effect discharge pipe 21 and the second-effect discharge pipe 51, respectively. By closing the first-effect electromagnetic valve 14, the first electromagnetic valve 24 and the first-effect The discharge valve 22 is then started to push the pressure plate 32 downward, thereby compressing the space inside the first-effect evaporation chamber 2, thereby increasing the pressure inside the first-effect evaporation chamber 2, thereby increasing the temperature inside the first-effect evaporation chamber 2, and at the same time, reducing the boiling point of the solvent, which is beneficial to accelerating the evaporation rate of the solvent. Similarly, the second-effect solenoid valve 42, the second solenoid valve 54, and the second-effect discharge valve 52 are closed, and the evaporation rate of the solvent inside the second-effect evaporation chamber 5 can be accelerated through the second pressurizing component 6, thereby achieving the purpose of accelerating the evaporation rate of the solvent, so as to quickly obtain a high-concentration solute;

[0025] Embodiment 2:

[0026] like Figure 1-2As shown: the top of the condenser 7 is connected to the second-effect heating chamber 4 through the return air pipe 71, an air pump is fixedly installed at one end of the return air pipe 71 close to the condenser 7, and the input end of the air pump is connected to the condenser 7, and the output end of the air pump is connected to the return air pipe 71, and a drain pipe 72 is fixedly installed at the bottom end of the condenser 7. The steam inside the condenser 7 can be discharged into the second-effect heating chamber 4 through the return air pipe 71, and the water inside the condenser 7 can be easily discharged through the drain pipe 72. The air pump can accelerate the rate at which the steam inside the condenser 7 enters the second-effect heating chamber 4, which is beneficial to maintaining the temperature inside the second-effect heating chamber 4.

[0027] The working principle and use process of the utility model: When the heat pump double-effect energy-saving evaporator is used, water is input into the first-effect heating chamber 1 through the water inlet pipe 11, and then the water is heated by the heat pump 12. The water vapor generated when the water is heated enters the first-effect evaporation chamber 2 through the first-effect solenoid valve 14, and then the temperature inside the first-effect evaporation chamber 2 is increased. Then the water vapor enters the second-effect heating chamber 4 through the first steam conduit 23, and then enters the second-effect evaporation chamber 5 through the second-effect steam pipe 41. Then the water vapor enters the condenser 7 through the second steam conduit 53, and finally flows back to the second-effect heating chamber 4 through the return pipe 71. The water vapor can make the first-effect The solvent of the solution inside the evaporation chamber 2 and the second-effect heating chamber 4 evaporates, thereby increasing the concentration of the solute. By closing the first-effect solenoid valve 14, the first solenoid valve 24 and the first-effect discharge valve 22, and then starting the cylinder 31 to push the pressure plate 32 downward, the space inside the first-effect evaporation chamber 2 is compressed, the pressure inside the first-effect evaporation chamber 2 can be increased, and the temperature inside the first-effect evaporation chamber 2 can be increased. At the same time, the boiling point of the solvent can be reduced, which is beneficial to accelerate the evaporation rate of the solvent. Similarly, by closing the second-effect solenoid valve 42, the second solenoid valve 54, and the second-effect discharge valve 52, the evaporation rate of the solvent inside the second-effect evaporation chamber 5 can be accelerated through the second pressurizing component 6, and the evaporation rate of the solvent can be accelerated.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heat pump double-effect energy-saving evaporator, comprising a first-effect heating chamber (1), a water inlet pipe (11) and a heat pump (12) being fixedly mounted on one side of the first-effect heating chamber (1), and an output end of the heat pump (12) being connected to the first-effect heating chamber (1); Features: The other side of the first-effect heating chamber (1) is connected to the first-effect evaporation chamber (2) via a first-effect steam pipe (13); the first-effect evaporation chamber (2) is provided with a first pressurizing assembly (3); the first-effect evaporation chamber (2) is connected to the second-effect heating chamber (4) via a first steam conduit (23); the second-effect heating chamber (4) has the same specifications as the first-effect evaporation chamber (2); the second-effect heating chamber (4) is provided with a second pressurizing assembly (6) having the same specifications as the first pressurizing assembly (3); the second-effect heating chamber (4) is connected to the second-effect evaporation chamber (5) via a second-effect steam pipe (41); and the second-effect evaporation chamber (5) is connected to the condenser (7) via a second steam conduit (53); The first pressurizing component (3) comprises a cylinder (31) fixedly mounted on the top surface of the first-effect evaporation chamber (2); an output end of the cylinder (31) penetrates through the top surface of the first-effect evaporation chamber (2) and is fixedly mounted with a pressure plate (32); the size of the pressure plate (32) matches the inner diameter of the first-effect evaporation chamber (2); an elastic sealing ring is fixedly mounted on the arc surface of the first-effect evaporation chamber (2), and the elastic sealing ring is in contact with the inner wall of the first-effect evaporation chamber (2).

2. The heat pump double-effect energy-saving evaporator according to claim 1 is characterized in that: A first-effect solenoid valve (14) is fixedly mounted in the middle of the first-effect steam pipe (13), and a first solenoid valve (24) is fixedly mounted at one end of the first steam conduit (23) close to the first-effect evaporation chamber (2).

3. The heat pump double-effect energy-saving evaporator according to claim 1 is characterized in that: A second-effect solenoid valve (42) is fixedly installed in the middle of the second-effect steam pipe (41), and a second solenoid valve (54) is fixedly installed in the middle of the second steam conduit (53).

4. The heat pump double-effect energy-saving evaporator according to claim 1 is characterized in that: A first-effect discharge pipe (21) and a second-effect discharge pipe (51) are fixedly mounted at the bottom ends of the first-effect evaporation chamber (2) and the second-effect evaporation chamber (5), respectively, and a first-effect discharge valve (22) and a second-effect discharge valve (52) are fixedly mounted at the middle parts of the first-effect discharge pipe (21) and the second-effect discharge pipe (51), respectively.

5. The heat pump double-effect energy-saving evaporator according to claim 1 is characterized in that: The top end of the condenser (7) is connected to the second-effect heating chamber (4) via a return air pipe (71); an air pump is fixedly mounted on one end of the return air pipe (71) close to the condenser (7); the input end of the air pump is connected to the condenser (7); the output end of the air pump is connected to the return air pipe (71); and a drain pipe (72) is fixedly mounted on the bottom end of the condenser (7).

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