CN205908929U - Wear-resistant elbow - Google Patents

Abstract

The utility model relates to the technical field of pipeline connecting pieces, in particular to a wear-resistant elbow, which comprises a curve body and a cap, wherein the curve body comprises a flange part, an inlet curve and an outlet curve, an inverted V-shaped structure is formed between the inlet curve and the outlet curve, a feeding material passing port and a discharging material passing port are respectively arranged on the flange part, the cap is covered on the upper end surface of the flange part, and a buffering curved groove which is simultaneously communicated with the feeding material passing port and the discharging material passing port is arranged on the lower end surface of the cap. And only the cover cap needs to be detached and replaced, so that the cost is low, the workload is small, and the device is convenient and quick.

Description

Wear-resistant elbow

Technical field:

The utility model relates to the technical field of pipeline connectors, in particular to a wear-resistant elbow.

Background technique:

At present, in the pneumatic conveying project of granular and hard raw materials, it is necessary to transport raw materials through pipelines. Pneumatic conveying uses the energy of the air to transport materials. The energy of the air can be changed into two forms of pressure and speed. Generally, the energy in the form of speed is used, that is, the kinetic energy of the air with a certain speed is used to transport materials. When the particles are transported in the horizontal pipeline and the vertical pipeline, the incident angle of the collision between the particles and the pipe wall is very small, which generally does not cause serious wear. When the particles enter the elbow, due to the change of the direction of movement, the particles undergo several collisions under the action of centrifugal force and inertial force, resulting in impact on the pipe wall and causing friction on the pipe wall. Since the density of the particles is much greater than that of the gas, the centrifugal force of the particles in motion is much greater than that of the gas medium, which causes the particle group to separate from the gas at the elbow and collides with the elbow channel in the form of a jet, resulting in severe wear of the local pipeline and the formation of Wear grooves, eventually causing the pipe wall to wear through.

Existing elbows are generally bent directly by steel pipes, and very thick steel pipes cannot be used, so that the wall of the bent elbow is not thick enough. During use, it is easy to be broken down, and the service life is very short. It cannot be repaired, and the entire elbow needs to be replaced. The workload is heavy and it is very troublesome. The service life of the elbow after replacement is also short.

Utility model content:

The purpose of the utility model is to provide a wear-resistant elbow with thicker thickness, impact resistance, long service life and convenient and quick replacement in view of the deficiencies in the prior art.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a wear-resistant elbow, including a bend body and a cap made of cast steel. The bend body is composed of a flange part, an entrance bend, and an exit bend. The upper end of the bend is connected to the left half of the lower end of the flange, the upper end of the exit bend is connected to the right half of the lower end of the flange, the lower end of the entrance is inclined backward, and the lower end of the exit is inclined forward , an inverted V-shaped structure is formed between the entrance bend and the exit bend, and the flange part is respectively provided with a feed inlet connected with the inlet bend and a discharge outlet connected with the outlet bend, and the cap is set On the upper end surface of the flange part, the lower end surface of the cap is provided with a buffer surface groove which communicates with the material inlet and outlet at the same time.

The cap is fixedly connected to the flange part by locking wires.

A gasket is provided between the cap and the flange.

The buffer curved groove is formed by connecting and enclosing a plurality of arc-shaped curved surfaces, and the inner surface of the upper end of the entrance curve and the inner surface of the upper end of the outlet curve respectively have a smooth transition with the arc-shaped curved surface of the buffer curved surface groove.

An angle of 90 degrees is formed between the entrance curve and the exit curve.

The beneficial effects of the utility model are: the wear-resistant elbow provided by the utility model includes a bend body and a cap, the bend body is composed of a flange part, an entrance bend, and an exit bend, and the upper end of the entrance bend is connected to the The left half of the lower end surface of the flange part, the upper end of the outlet bend is connected to the right half of the lower end face of the flange part, the lower end of the entrance bend is set backwards, the lower end of the exit bend is set forward, the entrance bend and the exit bend An inverted V-shaped structure is formed between the channels, and the flange part is respectively provided with a material inlet port connected with the inlet bend, and a material discharge port connected with the outlet bend, and the cap is set on the upper end surface of the flange part. , the lower end surface of the cap is provided with a buffer surface groove connected to the material inlet and outlet at the same time. The utility model uses the inlet curve, the outlet curve and the buffer surface groove of the cap to form a smooth transition flow channel. Centrifugal force can be formed when the raw material is transported through the buffer surface groove, and the raw material will not directly impact on the cap, which greatly reduces the impact force. Breakdown, you don't need to disassemble the pipe, but only need to remove the cap, replace the cap, low cost, small workload, convenient and quick.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural view of the utility model with a hidden cap.

Fig. 3 is a structural schematic diagram of the utility model cap.

detailed description:

The utility model is further described below in conjunction with the accompanying drawings, as shown in Figures 1-3, the utility model includes a bend body 1, a cap 2 made of cast steel, and the bend body 1 is composed of a flange portion 11, an inlet bend Road 12 and exit bend 13, the upper end of the entrance bend 12 is connected to the left half of the lower end surface of the flange part 11, the upper end of the exit bend 13 is connected to the right half of the lower end surface of the flange part 11, and the entrance bend The lower end of 12 is inclined backward, and the lower end of outlet bend 13 is inclined forward. An inverted V-shaped structure is formed between the entrance bend 12 and the exit bend 13. Flanges 11 are respectively provided with openings communicating with the entrance bend 12. The material feeding port 14, the discharge port 15 connected with the outlet bend 13, the cap 2 is set on the upper end face of the flange part 11, and the lower end face of the cap 2 is provided with the feeding port 14 at the same time. A buffer surface groove 21 communicated with the discharge port 15.

The cap 2 and the flange part 11 are locked and fixedly connected by the locking wire 3, which is convenient for assembly and disassembly. A gasket 4 is provided between the cap 2 and the flange part 11, so that the sealing performance is better.

The buffer curved surface groove 21 is formed by connecting and enclosing a plurality of arc-shaped curved surfaces. The inner surface of the upper end of the entrance curve 12 and the inner surface of the upper end of the outlet curve 13 respectively transition smoothly with the arc-shaped curved surface of the buffer curved surface groove 21, further reducing the The impact force of the raw material on the cap 2 is determined. The entrance curve 12 and the exit curve 13 form an angle of 90 degrees with each other.

The utility model utilizes the inlet curve 12, the outlet curve 13 and the buffer surface groove 21 of the cap 2 to form a smooth transitional flow path, and the raw material can form a centrifugal force when passing through the buffer surface groove 21, and the raw material will not directly impact on the cap 2, The impact force is greatly reduced. At the same time, the cap 2 is made of cast steel, which is thicker, impact-resistant, and has a long service life. If the cap 2 is broken down, it is not necessary to disassemble the pipe, but only need to remove the cap 2 and replace the cap. 2 Replacement, low cost, small workload, convenient and fast.

Of course, the above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the utility model patent application are included in the utility model patent application within range.

Claims (5)

1. Wear-resistant elbow, characterized in that: it includes a bend body (1), a cap (2) made of cast steel, the bend body (1) is composed of a flange part (11), an inlet bend (12) , the outlet bend (13), the upper end of the inlet bend (12) is connected to the left half of the lower end surface of the flange part (11), and the upper end of the outlet bend (13) is connected to the lower end surface of the flange part (11) The right half of the right half of the entrance curve (12) is inclined backward, and the lower end of the exit curve (13) is inclined forward, forming an inverted V shape between the entrance curve (12) and the exit curve (13). structure, the flange portion (11) is respectively provided with a feed inlet (14) connected to the inlet bend (12), a discharge outlet (15) connected to the outlet bend (13), and a cap ( 2) The cover is set on the upper end surface of the flange part (11), and the lower end surface of the cap (2) is provided with a buffer surface groove (21) which is connected with the material inlet (14) and the material outlet (15) at the same time. ). 2. The wear-resistant elbow according to claim 1, characterized in that: the cap (2) and the flange part (11) are locked and fixedly connected by a locking wire (3). 3. The wear-resistant elbow according to claim 1, characterized in that a gasket (4) is provided between the cap (2) and the flange part (11). 4. The wear-resistant elbow according to claim 1, characterized in that: the buffer curved surface groove (21) is formed by connecting and enclosing a plurality of arc-shaped curved surfaces, the inner surface of the upper end of the entrance bend (12), The inner surface of the upper end of the outlet bend (13) is smoothly transitioned to the arc-shaped curved surface of the buffer curved surface groove (21) respectively. 5. The wear-resistant elbow according to claim 1, characterized in that: the entrance bend (12) and the exit bend (13) form an angle of 90 degrees to each other.