CN211885454U

CN211885454U - Rectification tower heat exchanger for urea production

Info

Publication number: CN211885454U
Application number: CN202020068807.XU
Authority: CN
Inventors: 陈三宽; 燕霖; 张耀文
Original assignee: Shaanxi Aowei Qianyuan Chemical Co ltd
Current assignee: Shaanxi Aowei Qianyuan Chemical Co ltd
Priority date: 2020-01-14
Filing date: 2020-01-14
Publication date: 2020-11-10
Anticipated expiration: 2030-01-14

Abstract

The utility model discloses a urea production rectifying column heat exchanger, which belongs to the technical field of heat exchangers, and comprises a cut-off component, a main body, a telescopic water pipe and a lead screw, wherein a water tank is arranged in the middle of the upper end of the main body, a motor is fixed in the middle of the upper end of the water tank, the upper end of the motor is provided with the lead screw, and a water pump is arranged on one side of the upper end of the water tank; the utility model discloses be provided with the ball sealer at the inside spout of seal block, be connected with reset spring between ball sealer and the seal block, the raceway pushes down spacing slide bar and makes the connecting plate descend, and the seal block laminating of connecting plate lower extreme plugs up the bypass pipe, and the ball sealer stretches out under reset spring's spring action and further plugs up bypass pipe hole, improves the leakproofness.

Description

Rectification tower heat exchanger for urea production

Technical Field

The utility model belongs to the technical field of the heat exchanger, concretely relates to urea production rectifying column heat exchanger.

Background

The heat exchanger is a device for transferring part of heat of hot fluid to cold fluid, and is also called a heat exchanger. The heat exchanger plays an important role in chemical industry, petroleum industry, power industry, food industry and other industrial production, can be used as a heater, a cooler, a condenser, an evaporator, a reboiler and the like in chemical industry production, and is widely applied.

The heat exchanger is an energy-saving device for transferring heat between materials between two or more fluids with different temperatures, and is used for transferring heat from the fluid with higher temperature to the fluid with lower temperature to make the temperature of the fluid reach the index specified by the process so as to meet the requirements of process conditions, and is also one of main devices for improving the utilization rate of energy. The heat exchanger industry relates to more than 30 industries such as heating ventilation, pressure vessels, reclaimed water treatment equipment, chemical industry, petroleum and the like, and an industrial chain is formed mutually.

The prior art has the following problems: the heat exchanger of the rectifying tower for the existing urea production drives a crank rod to move through a motor to realize the switching of circular flow when in use, so that the heat exchanger has the disadvantages of poor structural stability, inconvenient long-term use, poor switching tightness and easy leakage.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a urea production rectifying column heat exchanger has simple structure, and stability is good, characteristics that the leakproofness is high.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a urea production rectifying column heat exchanger, is including damming subassembly, main part, flexible water pipe and lead screw, be provided with the water tank in the middle of the upper end of main part, be fixed with the motor in the middle of the upper end of water tank, the upper end of motor is provided with the lead screw, upper end one side of water tank is provided with the water pump, the upper end both sides of main part are provided with the water delivery port, the side of water delivery port is provided with the bypass pipe, the inside of water delivery port is provided with the subassembly that dams, the inside of water delivery port is located the upper end of damming the subassembly and is provided with the raceway, the upper end of raceway is connected.

Preferably, the subassembly that dams includes spacing slide bar, closing plate, ball sealer, seal block, reset spring, connecting plate, delivery port and buffer spring, wherein, the centre of closing plate is provided with the delivery port, the both ends of closing plate are run through and are fixed with spacing slide bar, the upper end surface that spacing slide bar is located the closing plate is provided with buffer spring, the lower extreme of spacing slide bar is connected with the connecting plate, the lower extreme of connecting plate is fixed with the seal block, the inside spout of seal block is provided with the ball sealer, be connected with reset spring between ball sealer and the seal block.

Preferably, the water delivery pipe is in sliding connection with the water delivery port, and the connecting pipe is in threaded engagement with the water delivery pipe.

Preferably, the screw rod is in threaded engagement with the connecting rod to be rotatably connected, and two ends of the connecting rod are fixed with the water delivery pipe through the fastening bolts.

Preferably, the upper end of the connecting plate is sealed when being attached to the surface of the sealing plate, the sealing block is of an arc-shaped structure, and the surface of the sealing block is attached to the inner wall of the water delivery port.

Preferably, the return spring and the buffer spring are in an expanded state in a natural state, and the diameter of the sealing ball is one centimeter larger than that of the bypass pipe.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model drives the screw rod to rotate through the rotation of the motor, the water delivery pipes at two ends of the connecting rod connected with the screw rod are limited by the water delivery port, so that the connecting rod drives the water delivery pipes to slide and descend along the water delivery port, the lifting adjustment is stable, and the service life is prolonged;

2. the utility model discloses be provided with the ball sealer at the inside spout of seal block, be connected with reset spring between ball sealer and the seal block, the raceway pushes down spacing slide bar and makes the connecting plate descend, and the seal block laminating of connecting plate lower extreme plugs up the bypass pipe, and the ball sealer stretches out under reset spring's spring action and further plugs up bypass pipe hole, improves the leakproofness.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the intercepting component of the present invention;

in the figure: 1. a connecting pipe; 2. a water pump; 3. a shut-off assembly; 31. a limiting slide bar; 32. a sealing plate; 33. a sealing ball; 34. a sealing block; 35. a return spring; 36. a connecting plate; 37. a delivery port; 38. a buffer spring; 4. a bypass pipe; 5. a main body; 6. a water delivery pipe; 7. a telescopic water pipe; 8. a motor; 9. a screw rod; 10. a connecting rod; 11. a water delivery port; 12. a water tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides the following technical solutions: a rectification tower heat exchanger for urea production comprises an interception component 3, a main body 5, a telescopic water pipe 7 and a screw rod 9, wherein a water tank 12 is arranged in the middle of the upper end of the main body 5, a motor 8 is fixed in the middle of the upper end of the water tank 12, the screw rod 9 is arranged at the upper end of the motor 8, a water pump 2 is arranged on one side of the upper end of the water tank 12, water delivery ports 11 are arranged on two sides of the upper end of the main body 5, a bypass pipe 4 is arranged on the side edge of each water delivery port 11, the interception component 3 is arranged inside each water delivery port 11, a water delivery pipe 6 is arranged inside each water delivery port 11 and positioned at the upper end of the interception component 3, for convenience of fixed adjustment, the screw rod 9 is in threaded meshed rotary connection with a connecting rod 10, two ends of the connecting rod 10 are fixed with the water delivery pipe 6 through fastening bolts, the, the other end of the connecting pipe 1 is connected with a telescopic water pipe 7.

The closure assembly 3 comprises a limiting slide rod 31, a sealing plate 32, a sealing ball 33, a sealing block 34, a return spring 35, a connecting plate 36, a conveying port 37 and a buffer spring 38, wherein the conveying port 37 is arranged in the middle of the sealing plate 32, the limiting slide rod 31 is fixedly arranged at two ends of the sealing plate 32 in a penetrating manner, the buffer spring 38 is arranged on the surface of the limiting slide rod 31, which is positioned at the upper end of the sealing plate 32, the connecting plate 36 is connected to the lower end of the limiting slide rod 31, the sealing block 34 is fixedly arranged at the lower end of the connecting plate 36, for sealing and jointing, the upper end of the connecting plate 36 is sealed when being jointed with the surface of the sealing plate 32, the sealing block 34 is of an arc-shaped structure, the surface of the sealing block 34 is jointed with the inner wall of the water delivery port 11, the sealing ball 33 is arranged in an internal chute of the sealing block 34, for, a return spring 35 is connected between the sealing ball 33 and the sealing block 34.

The utility model discloses a theory of operation and use flow: the utility model discloses during the use, install the heat exchanger in suitable position, when the heat exchanger normally works, rivers are through two bypass pipe 4 and two raceway 6 intercommunications, raceway 6 is connected with connecting pipe 1, make liquid flow at the internal circulation of main part 5, the during stop work, motor 8 rotates and drives lead screw 9 and rotate, raceway 6 at the connecting rod 10 both ends that lead screw 9 is connected receives water delivery port 11 restriction, make connecting rod 10 drive raceway 6 along with water delivery port 11 slide and descend, raceway 6 pushes down spacing slide bar 31 and makes connecting plate 36 descend, the laminating of the sealed block 34 of connecting plate 36 lower extreme plugs up bypass pipe 4, and sealed ball 33 stretches out under reset spring 35's spring action and further plugs up bypass pipe 4 tube hole, improve the leakproofness, make the liquid in the main part 5 continuously flow, avoid freezing and cause the damage.

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

Claims

1. The utility model provides a urea production rectifying column heat exchanger, includes subassembly (3), main part (5), flexible water pipe (7) and lead screw (9) that dams, its characterized in that: be provided with water tank (12) in the middle of the upper end of main part (5), be fixed with motor (8) in the middle of the upper end of water tank (12), the upper end of motor (8) is provided with lead screw (9), upper end one side of water tank (12) is provided with water pump (2), the upper end both sides of main part (5) are provided with delivery port (11), the side of delivery port (11) is provided with bypass pipe (4), the inside of delivery port (11) is provided with dams subassembly (3), the inside upper end that is located dams subassembly (3) of delivery port (11) is provided with raceway (6), the upper end of raceway (6) is connected with connecting pipe (1), the other end of connecting pipe (1) is connected with flexible water pipe (7).

2. The urea production rectifying tower heat exchanger according to claim 1, characterized in that: the assembly (3) that dams includes spacing slide bar (31), closing plate (32), sealing ball (33), sealing block (34), reset spring (35), connecting plate (36), delivery port (37) and buffer spring (38), wherein, the centre of closing plate (32) is provided with delivery port (37), the both ends of closing plate (32) are run through and are fixed with spacing slide bar (31), the upper end surface that spacing slide bar (31) are located closing plate (32) is provided with buffer spring (38), the lower extreme of spacing slide bar (31) is connected with connecting plate (36), the lower extreme of connecting plate (36) is fixed with sealing block (34), the inside spout of sealing block (34) is provided with sealing ball (33), be connected with reset spring (35) between sealing ball (33) and sealing block (34).

3. The urea production rectifying tower heat exchanger according to claim 1, characterized in that: the water delivery pipe (6) is in sliding connection with the water delivery port (11), and the connecting pipe (1) is in threaded engagement with the water delivery pipe (6).

4. The urea production rectifying tower heat exchanger according to claim 1, characterized in that: the screw rod (9) is in threaded engagement with the connecting rod (10) in a rotating mode, and two ends of the connecting rod (10) are fixed with the water delivery pipe (6) through fastening bolts.

5. The urea production rectifier heat exchanger of claim 2, wherein: the upper end of the connecting plate (36) is sealed when being attached to the surface of the sealing plate (32), the sealing block (34) is of an arc-shaped structure, and the surface of the sealing block (34) is attached to the inner wall of the water delivery port (11).

6. The urea production rectifier heat exchanger of claim 2, wherein: the return spring (35) and the buffer spring (38) are in an expanded state in a natural state, and the diameter of the sealing ball (33) is one centimeter larger than the bypass pipe (4).