Stretchable totally-closed flip coupling shield

Abstract

The utility model belongs to the technical field of centrifugal pumps, and particularly relates to a stretchable totally-closed flip coupling shield which comprises a shield body, a flip cover is arranged in the middle of the shield body, stretching covers are arranged on the left side and the right side of the shield body respectively, each stretching cover is composed of two half parts which are symmetrically arranged, a round hole is formed in one side of each stretching cover, and a through hole is formed in the other side of each stretching cover. A long-strip-shaped hole is formed in the other side of the stretching cover, and a through hole matched with the long-strip-shaped hole is formed in the protective cover body. The protective cover can cover a coupler and a shaft from all angles to form a totally-enclosed space, and the length of the protective cover is increased within a certain range through the stretching type design, so that the requirements of engineering projects can be completely met; and the operation is convenient during disassembly and assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of centrifugal pumps, in particular to a stretchable fully enclosed flip-cover coupling shield. Background Art

[0002] End-suction horizontal centrifugal pumps are a major structural form and are widely used in national economic construction. Most centrifugal pumps and drivers generally use couplings to transmit torque so that the centrifugal pumps can work normally. When the unit is running, the coupling is a rotating component, and its safety protection is extremely important. In recent years, many companies have paid more and more attention to it.

[0003] It is clearly stipulated in the technical conditions of centrifugal pumps that "the protective cover must be designed in accordance with national safety regulations". This requirement is also included in the latest version of AP1610-12th Edition, and there is an independent chapter that details the specific form requirements. From a safety perspective, the coupling is a moving part, and direct contact with people or objects can cause mechanical damage. When the coupling rotates, the screws, pins, keys, etc. on it are also at risk of being thrown out. In order to avoid the above safety hazards, the most fundamental way is to install a coupling guard. The coupling guard wraps the coupling inside and maintains a suitable distance from the coupling so as not to affect its safe operation. It can be seen that the coupling guard isolates the outside world from the isolator, effectively avoiding the above safety hazards. At the same time, the coupling guard is a static part with a sleek appearance design that will not cause harm to people or objects outside.

[0004] The common coupling guard structure on the market still has certain defects due to various reasons:

[0005] 1) Fixed shield lengths are not suitable for current engineering application requirements. For safety reasons, more and more engineering applications require that "coupling shields must ensure that all exposed rotating parts are contained within the shield, and the protective gap between all rotating parts must not exceed 10mm." Some even require that the protective gap be no greater than 5mm. Based on this requirement, the shield length must be calculated for each application, resulting in a large number of shield parts with different lengths. In addition, the incomplete dimensions of the motor end make it difficult to determine the exact shield length during design. Usually, the actual measurement is required after the motor is purchased. These factors bring serious inconvenience to the design, manufacturing, and use.

[0006] 2) Because the coupling guard has a shaft passing through it, its common structural form is saddle-shaped, leaving a large gap under the shaft, which poses a safety hazard.

[0007] 3) The operating space is very small during the disassembly and assembly process, which makes the operation inconvenient. It may even be impossible to disassemble and assemble due to interference on the pump side or the motor side. There is no flip cover on the top, which makes it inconvenient to turn the machine. Utility Model Content

[0008] In order to overcome the above-mentioned defects of the prior art, the present invention proposes a stretchable fully enclosed flip-cover coupling shield that can cover the coupling and shaft from all angles to form a fully enclosed space. The stretchable design extends the length of the shield within a certain range, which can fully meet the requirements of the engineering project. The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0009] A stretchable fully enclosed flip-cover coupling shield comprises a shield body, a flip cover arranged in the middle of the shield body, and stretch shields arranged on the left and right sides of the shield body respectively. The stretch shield consists of two halves, which are symmetrically arranged. A circular hole is provided on one side of the stretch shield, and a long hole is provided on the other side of the stretch shield. A through hole matching the long hole is provided in the shield body.

[0010] Furthermore, the shield body is formed by processing the plate in one step.

[0011] Furthermore, one end of the flip cover is fixedly connected to the shield body through a hinge, and the other end of the flip cover is locked and connected to the shield body through a lock.

[0012] Furthermore, a handle is provided on the flip cover.

[0013] Specifically, the stretch hood is sleeved on the left and right sides of the shield body, and the distance between the stretch hood and the shield body is adjusted through the long holes.

[0014] Specifically, the elongated hole and the through hole are fixedly connected by bolts and nuts.

[0015] Preferably, reinforcing ribs are provided inside the through hole of the shield body.

[0016] Preferably, the shield body further comprises a foot, and a foot hole is provided on the foot.

[0017] The utility model can cover the coupling and the shaft from all angles to form a fully enclosed space. The stretchable design extends the length of the shield within a certain range, which can fully meet the requirements of the engineering project; and the operation is convenient during disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 for Figure 1 Left view of;

[0020] Figure 3 for Figure 1 A top view of

[0021] Figure 4 for Figure 1 Exploded diagram. DETAILED DESCRIPTION

[0022] Figure 1 It is a structural diagram of the utility model; Figure 2 for Figure 1 Left view of; Figure 3 for Figure 1 A top view of Figure 4 for Figure 1 Exploded diagram of Figures 1 to 4 As shown, a stretchable fully enclosed flip-cover coupling shield includes a shield body 1, a flip cover 2 is provided in the middle of the shield body 1, and a stretch shield 3 is provided on the left and right sides of the shield body 1 respectively. The stretch shield 3 is composed of two halves 3.1, and the two halves 3.1 are symmetrically arranged. One side of the stretch shield 3 is provided with a circular hole 3.2, which is formed by the semicircular holes of the two halves 3.1. The other side of the stretch shield 3 is provided with an elongated hole 3.3, and a through hole 1.1 is provided in the shield body 1 to match the elongated hole 3.3.

[0023] Compared with the existing saddle shape, the stretch hood 3 of this embodiment has an additional side panel below the circular hole 3.2. The side panel is composed of two side panels 3.4 divided into two halves 3.1, so that the sides of the stretch hood 3 can also be closed. The stretch hood 3 is sleeved on the left and right sides of the shield body 1, and the distance between the stretch hood 3 and the shield body 1 is adjusted by the elongated hole 3.3. The elongated hole 3.3 is fixedly connected to the through hole 1.1 by bolts and nuts. When stretched to the appropriate position, the bolt is passed through the elongated hole 3.3 and matched with the nut to fix the connection; a reinforcing rib 1.2 is provided on the inner side of the through hole 1.1 of the shield body 1. The reinforcing rib 1.2 of this embodiment is fixed to the inner side of the shield body 1 by welding.

[0024] The shield body 1 is made of a plate material processed in one step. One end of the flip cover 2 is fixedly connected to the shield body 1 by a hinge 2.1, and the other end of the flip cover 2 is locked and connected to the shield body 1 by a lock buckle 2.2. A handle 4 is provided on the flip cover 2. The handle 4 of this embodiment is riveted on the flip cover 2 to facilitate the flip cover 2. The shield body 1 also includes a foot 5, and a foot hole 5.1 is provided on the foot 5. The utility model is provided with a flip cover 2, so that a turning window is added to the top of the shield body 1. The handle 4 is provided to facilitate the flip cover, and the lock buckle 2.2 is provided to ensure that the window can be effectively closed, thereby ensuring safety in use.

[0025] When installing the present invention, first install the shield body 1, then install the stretch shield 3, adjust the stretch length according to the gap between the two ends, tighten the bolts and nuts after adjustment, and finally fix the entire coupling shield to the base or foundation through the foot holes 5.1 to complete the installation. Similarly, when disassembling, follow the reverse order.

[0026] The utility model can fully meet the requirements of various clearances of engineering projects, is easy to turn, can be safely locked, is fully enclosed, and is easy to disassemble and assemble, reducing safety hazards, ensuring the safe operation of the pump unit, reducing the number of parts of the specific length guard, and reducing the production, assembly, maintenance and repair costs, creating benefits for enterprises and customers.

[0027] In short, the utility model can cover the coupling and the shaft from all angles to form a fully enclosed space. The stretchable design extends the length of the shield within a certain range, which can fully meet the requirements of the engineering purpose; and it is easy to operate during disassembly and assembly.

Claims

1. A stretchable fully enclosed flip-cover coupling shield, characterized in that: It includes a shield body, a flip cover is arranged in the middle of the shield body, and stretch covers are respectively arranged on the left and right sides of the shield body. The stretch cover is composed of two halves, and the two halves are symmetrically arranged. A round hole is provided on one side of the stretch cover, and a long hole is provided on the other side of the stretch cover. A through hole matching the long hole is provided on the shield body.

2. The stretchable fully enclosed flip-cover coupling shield according to claim 1, characterized in that: The shield body is made of a plate through one-time processing.

3. The stretchable fully enclosed flip-cover coupling shield according to claim 1, characterized in that: One end of the flip cover is fixedly connected to the shield body through a hinge, and the other end of the flip cover is locked and connected to the shield body through a lock.

4. The stretchable fully enclosed flip-cover coupling shield according to claim 3, characterized in that: A handle is provided on the flip cover.

5. The stretchable fully enclosed flip-cover coupling shield according to claim 1, characterized in that: The stretch hood is sleeved on the left and right sides of the shield body, and the distance between the stretch hood and the shield body is adjusted through the long holes.

6. The stretchable fully enclosed flip-cover coupling shield according to claim 1, characterized in that: The elongated hole and the through hole are fixedly connected by bolts and nuts.

7. The stretchable fully enclosed flip-cover coupling shield according to claim 1, characterized in that: A reinforcing rib is arranged inside the through hole of the shield body.

8. The stretchable fully enclosed flip-cover coupling shield according to claim 1, wherein: The shield body further comprises a foot, on which a foot hole is arranged.

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