CN212072604U

CN212072604U - Tire thermal power station vacuum pumping system

Info

Publication number: CN212072604U
Application number: CN201922332323.1U
Authority: CN
Inventors: 曲建
Original assignee: Qingdao Xiangjian Industrial Engineering Co ltd
Current assignee: Qingdao Xiangjian Industrial Engineering Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-12-04
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a tire thermal power station evacuation system, vulcanization workshop unit passes through vacuum tube and low vacuum tank intercommunication, be equipped with liquid level changer and pressure transmitter on the low vacuum tank, be equipped with low vacuum drain pipe and sprayer suction pipe on the low vacuum tank, be equipped with the low vacuum drain pump on the low vacuum drain pipe, be equipped with the delivery pipe on the low vacuum drain pump, be equipped with the sprayer on the sprayer suction pipe, the sprayer passes through normal atmospheric temperature water return pipe and cooling water pitcher intercommunication, be equipped with temperature transmitter on the cooling water pitcher, the cooling tower passes through cooling tower return pipe and cooling water pitcher intercommunication, be equipped with outlet pipe one and outlet pipe two on the cooling water pitcher, be equipped with the supporting pump of sprayer on the outlet pipe one, the supporting pump of sprayer passes through sprayer inlet tube and sprayer intercommunication, be equipped with cooling water. The utility model has the advantages that: long service life, high reliability, less manual intervention and energy conservation.

Description

Tire thermal power station vacuum pumping system

Technical Field

The utility model relates to an evacuation technical field specifically indicates a hot power station evacuation system of tire.

Background

The operation step necessary in the process of vulcanizing the tyre is to pump vacuum degree of 35-45KPa, the pumped gas is mainly steam or mixed gas of steam and nitrogen, and the temperature is about 85 ℃. In the current stage, a plurality of liquid ring vacuum pumps are generally connected in parallel for vacuumizing in a tire factory. Because the liquid ring vacuum pump belongs to the variable displacement vacuum pump, the vacuum pumping volume is closely related to the temperature of the working liquid and the pumped gas, according to the characteristics of vulcanization vacuum pumping of a tire factory, the pumped gas is steam at about 85 ℃, the gas can expand and increase the temperature of the working liquid, and the pumping efficiency of the liquid ring vacuum pump is reduced. The air extraction efficiency of the liquid ring vacuum pump is 30-50%, and the efficiency of the liquid ring vacuum pump is further reduced due to the fact that the temperature of the working liquid is increased and the gas is expanded. Meanwhile, an impeller and a bearing of the liquid ring vacuum pump are high-speed running parts, and as the running time increases, the transmission parts are abraded, and the sealing parts are leaked, so that the liquid ring vacuum pump needs to be frequently maintained and replaced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is, to above-mentioned problem, provide a long service life, reliability height, manual intervention are few, the energy can be saved's a tire thermal power station vacuum pumping system.

In order to solve the technical problem, the utility model provides a technical scheme does: a tire thermal power station vacuumizing system comprises a vulcanization workshop unit, a low vacuum tank, a cooling water tank and a cooling tower, wherein the vulcanization workshop unit is communicated with the low vacuum tank through a vacuumizing pipe, a liquid level transmitter and a pressure transmitter are arranged on the low vacuum tank, a low vacuum drain pipe and an ejector suction pipe which are communicated with the low vacuum tank are arranged on the low vacuum tank, a low vacuum drainage pump is arranged on the low vacuum drain pipe, a water supply pipe communicated with the low vacuum drainage pump is arranged on the low vacuum drainage pump, an ejector is arranged on the ejector suction pipe, the ejector is communicated with the cooling water tank through a normal temperature water return pipe, a temperature transmitter is arranged on the cooling water tank, the cooling tower is communicated with the cooling water tank through a cooling tower return pipe, a first water outlet pipe and a second water outlet pipe which are communicated with the cooling water tank are arranged on the first water outlet, the supporting pump of sprayer passes through sprayer inlet tube and sprayer intercommunication, be equipped with the cooling water pump rather than the intercommunication on the outlet pipe two, cooling water pump passes through feed pipe and cooling tower intercommunication, liquid level changer and low vacuum drain pump signal connection, pressure changer and the supporting pump signal connection of sprayer, temperature changer and cooling water pump signal connection.

Compared with the prior art, the utility model the advantage lie in: according to the vacuumizing system of the tire thermal power station, 4 liquid ring vacuum pumps of 55KW are replaced by 37KW ejectors to meet the requirement of vulcanization production, so that energy loss is effectively reduced, and capital expenditure is reduced; the reliability of the ejector and the ejector matched pump is far higher than that of a liquid ring vacuum pump, so that the whole system is stable and reliable; the low vacuum drainage pump, the ejector matching pump and the cooling water pump are controlled by the temperature transmitter, the liquid level transmitter and the pressure transmitter, so that manual intervention is reduced, and intelligent control is realized.

As an improvement, a gate valve and a filter are arranged at the joint of the low-vacuum water discharge pipe and the low-vacuum water discharge pump, the joint of the first water outlet pipe and the ejector matched pump, and the joint of the second water outlet pipe and the cooling water pump.

As an improvement, a check valve and a pressure gauge set are arranged at the joint of the vacuum drainage pump and the water supply pipe, the joint of the ejector matching pump and the ejector water inlet pipe, and the joint of the cooling water pump and the water supply pipe.

As an improvement, a gate valve is arranged at the joint of the low vacuum tank and the ejector suction pipe.

Drawings

Fig. 1 is a schematic structural diagram of a vacuum pumping system of a thermal power station for tires according to the present invention.

Description of the drawings: 1. vulcanization workshop unit, 2, low vacuum tank, 3, cooling water tank, 4, cooling tower, 5, evacuation pipe, 6, liquid level transmitter, 7, pressure transmitter, 8, low vacuum drain pipe, 9, sprayer suction pipe, 10, low vacuum drain pump, 11, water supply pipe, 12, sprayer, 13, normal atmospheric temperature water return pipe, 14, temperature transmitter, 15, cooling tower return pipe, 16, outlet pipe one, 17, water pipe two, 18, sprayer supporting pump, 19, sprayer inlet tube, 20, cooling water pump, 21, water-feeding pipe, 22, gate valve, 23, filter, 24, check valve, 25, manometer group.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

With the attached drawings, the tire thermal power station vacuumizing system comprises a vulcanization workshop unit 1, a low vacuum tank 2, a cooling water tank 3 and a cooling tower 4, wherein the vulcanization workshop unit 1 is communicated with the low vacuum tank 2 through a vacuumizing pipe 5, the low vacuum tank 2 is provided with a liquid level transmitter 6 and a pressure transmitter 7, the low vacuum tank 2 is provided with a low vacuum drain pipe 8 and an ejector suction pipe 9 which are communicated with the low vacuum tank 2, the low vacuum drain pipe 8 is provided with a low vacuum drainage pump 10, the low vacuum drainage pump 10 is provided with a water supply pipe 11 which is communicated with the low vacuum drainage pump, the ejector suction pipe 9 is provided with an ejector 12, the ejector 12 is communicated with the cooling water tank 3 through a normal temperature water return pipe 13, the cooling water tank 3 is provided with a temperature transmitter 14, the cooling tower 4 is communicated with the cooling water tank 3 through a cooling tower return pipe 15, the cooling water tank 3 is provided with a first water, the water level measuring device is characterized in that an ejector matching pump 18 communicated with the water outlet pipe I is arranged on the water outlet pipe I16, the ejector matching pump 18 is communicated with an ejector 12 through an ejector water inlet pipe 19, a cooling water pump 20 communicated with the water outlet pipe II 17 is arranged on the water outlet pipe II, the cooling water pump 20 is communicated with a cooling tower 4 through a water feed pipe 21, the liquid level transmitter 6 is in signal connection with the low-vacuum drainage pump 10, the pressure transmitter 7 is in signal connection with the ejector matching pump 18, and the temperature transmitter 14 is in signal connection with the cooling water pump 20.

And a gate valve 22 and a filter 23 are arranged at the joint of the low vacuum drain pipe 8 and the low vacuum drain pump 10, the joint of the first water outlet pipe 16 and the ejector matching pump 18 and the joint of the second water outlet pipe 17 and the cooling water pump 20, the gate valve 22 controls on-off, and the filter 23 filters impurities in water.

The joint of the low vacuum drainage pump 10 and the water supply pipe 11, the joint of the ejector matching pump 18 and the ejector water inlet pipe 19, and the joint of the cooling water pump 20 and the water supply pipe 21 are respectively provided with a check valve 24 and a pressure gauge set 25, the check valve 24 avoids liquid backflow, and the pressure gauge set 25 monitors pressure change to ensure use safety.

And a gate valve 22 is arranged at the joint of the low vacuum tank 2 and the ejector suction pipe 9, and the gate valve 22 controls the on-off of the ejector suction pipe 9.

The utility model discloses a theory of operation: according to the tire thermal power station vacuumizing system, a low vacuum tank is used as a vacuum degree caching device and a low vacuum generated condensed water storage device, and a vulcanizing unit is communicated with the low vacuum tank through a vacuumizing pipe. The low vacuum draining pump is turned on or off according to the signal of the liquid level transmitter to ensure that the liquid level in the low vacuum tank is not too high. The ejector is matched with a pump to pump normal-temperature water from the cooling water tank to supply the water to the ejector, the ejector generates high-speed flowing water flow to generate vacuum, a vacuum suction inlet of the ejector is connected with the low vacuum tank through an ejector suction pipe, and gas in the low vacuum tank is continuously pumped into the ejector. The temperature of water in the cooling water tank can rise because the ejector continuously sucks steam, the cooling water pump continuously sends the water in the cooling water tank into the cooling tower for cooling, and the water after cooling flows back to the cooling water tank. And the cooling water pump is turned on or off according to the signal of the temperature transmitter. The ejector matching pump adjusts the rotating speed of the frequency converter according to the signal of the pressure transmitter, and correspondingly adjusts the vacuum degree according to different requirements of a vulcanizing set in a vulcanizing workshop.

The present invention has been described in connection with the embodiments thereof, and the description is not intended to be limiting, and the embodiments shown in the drawings are only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a tire thermal power station vacuum pumping system, includes vulcanization workshop unit (1), low vacuum tank (2), cooling water tank (3) and cooling tower (4), its characterized in that: the vulcanizing workshop unit (1) is communicated with a low vacuum tank (2) through a vacuum-pumping pipe (5), a liquid level transmitter (6) and a pressure transmitter (7) are arranged on the low vacuum tank (2), a low vacuum drain pipe (8) communicated with the low vacuum tank (2) and an ejector suction pipe (9) are arranged on the low vacuum tank (2), a low vacuum drainage pump (10) is arranged on the low vacuum drainage pipe (8), a water supply pipe (11) communicated with the low vacuum drainage pump (10) is arranged on the low vacuum drainage pump (10), an ejector (12) is arranged on the ejector suction pipe (9), the ejector (12) is communicated with a cooling water tank (3) through a normal-temperature water return pipe (13), a temperature transmitter (14) is arranged on the cooling water tank (3), a cooling tower (4) is communicated with the cooling water tank (3) through a cooling tower return pipe (15), a first water outlet pipe (16) and a second water outlet pipe (17) communicated with, be equipped with the supporting pump of sprayer (18) rather than the intercommunication on outlet pipe one (16), the supporting pump of sprayer (18) passes through sprayer inlet tube (19) and sprayer (12) intercommunication, be equipped with cooling water pump (20) rather than the intercommunication on outlet pipe two (17), cooling water pump (20) pass through feed pipe (21) and cooling tower (4) intercommunication, liquid level transmitter (6) and low vacuum drain pump (10) signal connection, pressure transmitter (7) and the supporting pump of sprayer (18) signal connection, temperature transmitter (14) and cooling water pump (20) signal connection.

2. The tire thermal power station evacuation system of claim 1, wherein: and a gate valve (22) and a filter (23) are arranged at the joint of the low vacuum drain pipe (8) and the low vacuum drain pump (10), the joint of the first water outlet pipe (16) and the ejector matching pump (18), and the joint of the second water outlet pipe (17) and the cooling water pump (20).

3. The tire thermal power station evacuation system of claim 1, wherein: and a check valve (24) and a pressure gauge group (25) are arranged at the joint of the low-vacuum drainage pump (10) and the water supply pipe (11), the joint of the ejector matched pump (18) and the ejector water inlet pipe (19), and the joint of the cooling water pump (20) and the water supply pipe (21).

4. The tire thermal power station evacuation system of claim 1, wherein: and a gate valve (22) is arranged at the joint of the low vacuum tank (2) and the ejector suction pipe (9).