CN204328293U - A kind of rubber for acetylene blanking system is flexible coupling - Google Patents

Abstract

The utility model discloses a soft rubber connection for an acetylene feeding system, which includes a flange and a rubber hose, and also includes a metal inner sleeve placed in the rubber hose, the end of the metal inner sleeve is connected with the rubber hose The ends are connected together by flanges, and the metal inner sleeve includes an upper metal inner sleeve and a lower metal inner sleeve, and the upper metal inner sleeve is set in the lower metal inner sleeve to form an airtight casing that can slide up and down. The rubber soft connection structure of the utility model not only has the compression deformation capacity and cushioning performance of the existing soft connection, does not affect the weighing measurement and flange connection, but also avoids direct contact of calcium carbide with the rubber hose of the soft connection, thereby enhancing the soft connection Excellent anti-calcium carbide impact ability, reduce the frequency of replacement of soft connections, reduce the number of maintenance, and reduce maintenance costs.

Description

A rubber soft connection for acetylene feeding system

technical field

The utility model relates to a soft rubber connection used for an acetylene feeding system.

Background technique

As shown in Figure 1, the calcium carbide feeding system (feeding system) of the generation unit in the acetylene area includes a feeding funnel 1, an upper storage hopper 2, a lower storage hopper 3, a vibrating feeder 4 and a generator 5. The feeding funnel 1, upper hopper 2 and lower hopper 3 of the heavy sensor must be connected by a connection device with compression deformation and expansion capacity, because if other connection devices are used to connect, the load cell has no compression deformation and expansion, and the weighing The sensor will fail; while the upper part of the vibrating feeder 4 is directly connected with the lower hopper 3, and the lower part is connected with the generator 5. If no rubber soft connection is used between the vibrating feeder 4 and the generator 5, the first will make The weighing of the lower storage hopper fails, and the second vibrating feeder will vibrate up and down during operation. If there is no rubber soft connection to buffer this part of the force, the flanges at the joints of the vibrating feeder, the lower storage hopper, and the generator will crack. A safety accident occurred due to the leakage of acetylene gas. Therefore, the rubber soft connection 10 is used to connect the feeding funnel 1, the upper storage hopper 2, the lower storage hopper 3, the vibrating feeder 4 to the generator 5, as shown in Fig. 2, the rubber soft connection includes a flange 6 and a rubber soft connection. Tube 7, the flange is used to fix the rubber hose, and the rubber hose itself has compression deformation ability.

The flow of calcium carbide during work will cause wear to the rubber soft connection, so the general service life of the rubber soft connection is about 2-3 months, and acetylene gas is a flammable and explosive dangerous medium, and all connection parts must not leak. Acetylene leakage occurs due to wear and tear of the soft connection. The maintenance and replacement cycle of the rubber soft connection is generally less than 2 months. The cost is not low. Each rubber soft connection is calculated according to the purchase fee of 1,800 yuan. There are 4 soft connections in each system, which are replaced once every two months. The cost of repairing and replacing soft connections for 10 systems throughout the year is about 43. Therefore, the soft connection used for the acetylene feeding system not only has a large maintenance workload, but also has a high maintenance cost.

Utility model content

The purpose of this utility model is to provide a rubber soft connection for the acetylene feeding system in view of the above-mentioned deficiencies in the prior art. Heavy metering and flange connection, but also can enhance the anti-calcium carbide impact capacity of the soft connection, reduce the replacement frequency of the soft connection, reduce the number of inspections, and reduce maintenance costs.

In order to achieve the above object, the technical solution adopted by the utility model is as follows:

A soft rubber connection for an acetylene feeding system, including a flange and a rubber hose, characterized in that it also includes a metal inner sleeve placed in the rubber hose, and the end of the metal inner sleeve is connected to the end of the rubber hose. The parts are connected together by flanges, and the metal inner sleeve includes an upper metal inner sleeve and a lower metal inner sleeve, and the upper metal inner sleeve is set in the lower metal inner sleeve to form an airtight casing that can slide up and down.

Further, the wall length of the metal inner sleeve is less than the tube wall length of the rubber hose, and greater than half of the tube wall length of the rubber hose.

Compared with the prior art, the utility model has the advantages that: according to the size of the existing rubber soft connection, the utility model adds a set of metal inner sleeves in the existing soft connection rubber hose, so that when the calcium carbide flows, the calcium carbide It is in contact with the metal inner sleeve and not directly in contact with the rubber hose of the soft connection, thereby enhancing the calcium carbide impact resistance of the soft connection, reducing the frequency of replacement of the soft connection, reducing the number of inspections, and reducing maintenance costs. At the same time, in order to ensure that the soft connection after adding the metal inner sleeve still has compression deformation ability and cushioning performance, and does not affect the weighing measurement and flange connection, the added metal inner sleeve in the rubber hose is divided into an upper metal inner sleeve and a lower metal inner sleeve. , the upper metal inner sleeve is set in the lower metal inner sleeve to form a closed casing that can slide up and down, so that the metal inner sleeve can slide up and down with the compression deformation of the rubber hose. Therefore, the rubber soft connection provided by the utility model does not affect weighing measurement and flange connection, and at the same time prolongs the service life of the soft connection, saves maintenance time, and reduces maintenance and replacement costs.

Description of drawings

Fig. 1 is the schematic diagram of acetylene carbide charging system;

Fig. 2 is a structural schematic diagram of an existing rubber soft connection;

Fig. 3 is a structural schematic diagram of the rubber soft connection of the present invention.

Legend: 1. Feeding funnel; 2. Upper storage hopper; 3. Lower storage hopper; 4. Vibrating feeder; 5. Generator; 6. Flange; 7. Rubber hose; 8. Upper metal inner sleeve; 9. Lower metal inner sleeve; 10. Rubber soft connection.

Detailed ways

In order to understand the purpose, technical solutions and beneficial effects of the utility model more clearly, the utility model will be further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following examples.

Referring to Fig. 3, the utility model is a rubber soft connection for acetylene feeding system, including a flange 6 and a rubber hose 7, and a metal inner sleeve is also included in the rubber hose 7, and the end of the metal inner sleeve is connected to the The ends of the rubber hose are connected together by the flange 6, and the metal inner sleeve includes an upper metal inner sleeve 8 and a lower metal inner sleeve 9, and the upper metal inner sleeve 8 is set in the lower metal inner sleeve 9 to form an airtight seal that can go up and down. Sliding sleeve, so that the metal inner sleeve can slide up and down along with the compression deformation of the rubber hose 7.

Further, the wall length of the metal inner sleeve is less than the tube wall length of the rubber hose, and greater than half of the tube wall length of the rubber hose.

The rubber soft connection structure of the utility model not only has the compression deformation capacity and cushioning performance of the existing soft connection, does not affect the weighing measurement and flange connection, but also avoids direct contact of calcium carbide with the rubber hose of the soft connection, thereby enhancing the soft connection Excellent anti-calcium carbide impact ability, reduce the frequency of replacement of soft connections, reduce the number of maintenance, and reduce maintenance costs.

Claims (2)

1. one kind is flexible coupling for the rubber of acetylene blanking system, comprise flange and rubber hose, it is characterized in that: also comprise the inner metal sleeve be placed in rubber hose, the end of inner metal sleeve and the end of rubber hose are passed through together with Flange joint, described inner metal sleeve comprises inner metal sleeve and lower inner metal sleeve, and upper inner metal sleeve is placed in lower inner metal sleeve and forms an airtight sleeve pipe that can slide up and down.

2. a kind of rubber for acetylene blanking system according to claim 1 is flexible coupling, and it is characterized in that: the jacket wall length of described inner metal sleeve is less than the tube wall length of rubber hose, is greater than the tube wall length of rubber hose half.