A protective structure for screw pump coupling

Abstract

This utility model discloses a protective structure for a screw pump coupling, belonging to the field of coupling protective structures. It includes a coupling and a protective cover. The protective cover comprises a first assembly ring, a second assembly ring, a first filter screen, a third assembly ring, a second filter screen, a locking rod, an elastic pad, a limiting ring, and a mating groove. A protective side plate is formed by the first filter screen positioned between the second and third assembly rings, and a protective sleeve is formed by the second filter screen positioned between the two first assembly rings. Combined with the limiting ring fixed to the coupling and the fitting structure between the third assembly ring and the limiting ring, as well as the snap-fit ​​structure between the second and first assembly rings via the locking rod and the elastic pad, the equipment can form a stable protective structure that prevents debris from entering through mutual limiting and snap-fit ​​cooperation. Furthermore, when maintenance is required, the protective structure can be quickly disassembled for maintenance by disconnecting the second assembly ring from the first assembly ring, facilitating use, heat dissipation, and preventing injury.

Description

Technical Field

[0001] This utility model belongs to the field of coupling protection structure, and specifically relates to a screw pump coupling protection structure. Background Technology

[0002] A coupling is a device that connects two shafts or a shaft and a rotating component, rotating together during the transmission of motion and power, and not disengaging under normal circumstances. Sometimes it is also used as a safety device to prevent the connected components from bearing excessive loads, thus providing overload protection. However, in current technology, in order to prevent foreign objects from entering the coupling, it is often necessary to add a cover plate for protection. Traditional coupling protective covers are mostly of the placement type and the fixed type. The placement type is simply assembled by covering and placing, which can provide some protection for the coupling, but its stability and protection are poor, allowing for large gaps for foreign objects to enter, and it is easy to be touched, displaced, or bumped against the coupling. The fixed type of cover plate is more inconvenient for subsequent maintenance. Utility Model Content

[0003] (a) Technical problems to be solved To overcome the shortcomings of existing technologies, a protective structure for screw pump couplings is proposed. This addresses the issue that, in existing technologies, protective covers are often added to prevent foreign objects from entering the coupling. Traditional protective covers for couplings are mostly either placement-type or fixed-type. Placement-type covers are simply assembled by covering the coupling, which provides some protection but has poor stability and protection, allowing for large gaps for foreign objects to enter. They are also prone to displacement and collisions with the coupling. Fixed-type covers, on the other hand, are inconvenient for subsequent maintenance.

[0004] (II) Technical Solution This utility model is achieved through the following technical solution: This utility model proposes a screw pump coupling protection structure, the structure of which includes a coupling and a protective cover, the protective cover being sleeved and fitted onto the coupling; The protective cover includes a first assembly ring, a second assembly ring, a first filter screen, a third assembly ring, a second filter screen, a locking rod, an elastic pad, a limiting ring, and a mating groove. Two limiting rings are provided, each covering and fixed to the shaft connecting parts on both sides of the coupling. A mating groove is provided on one side of the inner ring of the third assembly ring. The diameter of the mating groove on the edge side of the third assembly ring is the same as the diameter on the edge side of the limiting ring. The mating groove is located inside the third assembly ring and fits into the limiting ring. The third assembly ring is slidably sleeved onto the limiting ring through the mating groove. The mating grooves of the three assembly rings are assembled facing the middle of the coupling. A first filter screen is installed between the outer ring end of the third assembly ring and the inner ring end of the second assembly ring. One or more locking rods are evenly fixed to the outer ring end of the second assembly ring. The second assembly ring is embedded and locked to the inner ring side of the first assembly ring by the locking rods. There are two or more first assembly rings. A ring of the second filter screen is installed between the two first assembly rings. An elastic pad is provided between the locking rod and the first assembly ring. The elastic pad is C-shaped. One end of the locking rod passes through the first assembly ring away from the second filter screen.

[0005] Furthermore, the protective cover also includes fan blades, which are fixed between the second assembly ring and the third assembly ring.

[0006] Furthermore, the elastic pad is made of rubber.

[0007] Furthermore, the fan blades are located on the side of the first filter screen adjacent to the middle of the coupling.

[0008] Furthermore, the cross-sectional width of the clamp rod at the point where it passes through the first assembly ring is less than the maximum cross-sectional width of the clamp rod.

[0009] Furthermore, the outer ring end of the limiting ring is convex arc-shaped.

[0010] Furthermore, the coupling includes an elastic body, a claw disc, and a shaft connector. There are two claw discs, and a shaft connector is fixed to one end of each claw disc. The claw discs are engaged with each other by the elastic body.

[0011] Furthermore, the elastomer is made of engineering plastic or rubber.

[0012] Furthermore, the claw disc and shaft connector are made of steel.

[0013] Furthermore, the first assembly ring, the second assembly ring, the third assembly ring, and the limiting ring are all circular rings.

[0014] (III) Beneficial Effects One of the above technical solutions has the following advantages or beneficial effects: A protective side plate is formed by a first filter screen between the second and third assembly rings, and a protective sleeve is formed by a second filter screen between the two first assembly rings. Combined with a limiting ring fixed to the coupling and a fitting structure between the third assembly ring and the limiting ring, as well as a snap-fit ​​structure between the second and first assembly rings via a locking rod and elastic pad, the equipment can form a stable protective structure through mutual limiting and snap-fit ​​cooperation. This prevents foreign objects from entering the protective cover. When maintenance is required, the protective structure can be quickly disassembled for maintenance by disconnecting the second and first assembly rings, making it convenient to use. At the same time, the equipment adopts a multi-filter structure to facilitate heat dissipation. The way it is assembled on the coupling prevents collisions with the coupling and allows for a certain degree of rotation according to the coupling, accelerating internal heat dissipation. When a person touches the protective cover, the cover can also rotate relative to the coupling, reducing the danger caused by the rotation of the cover. Attached Figure Description

[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the protective structure for a screw pump coupling according to the present invention; Figure 2 This utility model Figure 1 A magnified structural diagram of A in the middle; Figure 3 This is a cross-sectional structural diagram of the protective cover of this utility model during assembly; Figure 4 This utility model Figure 3 A magnified structural diagram of B in the diagram; Figure 5 This is a cross-sectional structural schematic diagram of the side view of this utility model; Figure 6 This is a schematic cross-sectional view of the present invention after removing the elastomer from the side view. In the diagram: Coupling-1, Protective cover-2, Elastomer-101, Claw disc-102, Shaft connector-103, First assembly ring-201, Second assembly ring-202, First filter screen-203, Third assembly ring-204, Second filter screen-205, Clamping rod-206, Elastic pad-207, Limiting ring-208, Fan blade-209, Connecting groove-210. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0017] Example 1: This utility model provides a protective structure for a screw pump coupling: the structure includes a coupling 1 and a protective cover 2, wherein the protective cover 2 is fitted onto the coupling 1; The protective cover 2 includes a first assembly ring 201, a second assembly ring 202, a first filter screen 203, a third assembly ring 204, a second filter screen 205, a locking rod 206, an elastic pad 207, a limiting ring 208, and a mating groove 210. Two limiting rings 208 are provided, each covering and fixed to the shaft connecting parts 103 on both sides of the coupling 1. A mating groove 210 is provided on one side of the inner ring end of the third assembly ring 204. The diameter of the mating groove 210 on the edge side of the third assembly ring 204 is the same as the diameter on the edge side of the limiting ring 208. The mating groove 210 is located inside the third assembly ring 204 and fits into the limiting ring 208. The third assembly ring 204 is slidably sleeved onto the limiting ring 208 through the mating groove 210. The mating groove 210 of the third assembly ring 204 is assembled towards the middle of the coupling 1. A first filter 203 is assembled between the outer ring end of the third assembly ring 204 and the inner ring end of the second assembly ring 202. One or more locking rods 206 are evenly fixed to the outer ring end of the second assembly ring 202. The second assembly ring 202 is embedded and locked to the inner ring side of the first assembly ring 201 by the locking rods 206. There are two or more first assembly rings 201. A ring of second filter 205 is assembled between two first assembly rings 201. An elastic pad 207 is provided between the locking rod 206 and the first assembly ring 201. The elastic pad 207 is C-shaped. One end of the locking rod 206 passes through the side of the first assembly ring 201 away from the second filter 205.

[0018] The elastic pad 207 is made of rubber.

[0019] Wherein, the cross-sectional width of the clamp rod 206 at the point where it penetrates the first assembly ring 201 is less than the maximum cross-sectional width of the clamp rod 206.

[0020] The outer ring end of the limiting ring 208 is convex arc-shaped.

[0021] The coupling 1 includes an elastic body 101, a claw disc 102, and a shaft connector 103. There are two claw discs 102. One end of each claw disc 102 is fixed with a shaft connector 103. The claw discs 102 are fastened together by the elastic body 101.

[0022] The elastomer 101 is made of engineering plastic or rubber.

[0023] The claw disc 102 and the shaft connector 103 are made of steel.

[0024] In use, when coupling 1 rotates, protective cover 2 will also rotate to a certain extent due to the limiting ring 208 and the friction between the limiting ring 208 and the third assembly ring 204. When the third assembly ring 204 rotates, the side of protective cover 2 is formed by a first filter 203 between the second assembly ring 202 and the third assembly ring 204 to form a protective side plate, and the middle of protective cover 2 is formed by a second filter 205 between two first assembly rings 201 to form a protective sleeve. This rotation of the cover will drive the airflow inside the cover, which, combined with the slots in the cover, accelerates heat dissipation and reduces the cover's impact on heat dissipation. When touching protective cover 2, the third assembly ring 204 and the limiting ring 208 are slidably sleeved, allowing the cover to be relatively connected. The coupling 1 rotates independently, so that touching it will not affect the rotation of the coupling 1 and can reduce the danger of the protective cover 2 rotating. When maintenance is required, the second assembly ring 202 can be quickly separated by pulling out the locking rod 206 that is engaged with the first assembly ring 201. After separation, the second assembly ring 202 can move away from the middle of the coupling 1, so that the protective cover 2 is removed from the protection of the coupling 1, which is convenient for quick maintenance. When protection is required, the third assembly ring 204 is moved and sleeved on the limiting ring 208, and the locking rod 206 of the second assembly ring 202 is engaged with the first assembly ring 201 to complete the protective assembly. It is convenient and quick, realizes the structure of the protective cover 2 that can be easily disassembled and is stable, and can reduce the impact of the cover on heat dissipation.

[0025] Example 2: Compared to the previous embodiments, the protective cover 2 in this embodiment also includes a fan blade 209, which is fixed between the second assembly ring 202 and the third assembly ring 204.

[0026] The fan blade 209 is located on the side of the first filter screen 203 adjacent to the middle of the coupling 1.

[0027] During use, as the third assembly ring 204 and the second assembly ring 202 rotate, the fan blade 209 can better guide the airflow, forming airflow along the direction of the coupling 1, further increasing the heat dissipation effect of the equipment and avoiding the impact of high temperature on the service life of the coupling 1, etc. The rest of the structure and effect remain unchanged.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screw pump coupling protection structure, the structure comprising a coupling (1) and a protective cover (2), wherein the protective cover (2) is fitted over the coupling (1); Its features are: The protective cover (2) includes a first assembly ring (201), a second assembly ring (202), a first filter screen (203), a third assembly ring (204), a second filter screen (205), a locking rod (206), an elastic pad (207), a limiting ring (208), and a docking groove (210). Two limiting rings (208) are provided, each covering and fixed to the shaft connecting parts (103) on both sides of the coupling (1). A docking groove (210) is provided on one side of the inner ring end of the third assembly ring (204). The diameter of the docking groove (210) on the edge side of the third assembly ring (204) is the same as the diameter on the edge side of the limiting ring (208). The docking groove (210) is located inside the third assembly ring (204) and fits into the limiting ring (208). The third assembly ring (204) slides onto the limiting ring (208) through the docking groove (210). On 208), the mating groove (210) of the third assembly ring (204) is assembled towards the middle side of the coupling (1). A first filter screen (203) is assembled between the outer ring end of the third assembly ring (204) and the inner ring end of the second assembly ring (202). One or more locking rods (206) are evenly fixed on the outer ring end of the second assembly ring (202). The second assembly ring (202) is embedded and locked to the inner ring side of the first assembly ring (201) through the locking rods (206). There are two or more first assembly rings (201). A second filter screen (205) is assembled between the two first assembly rings (201). An elastic pad (207) is provided between the locking rod (206) and the first assembly ring (201). The elastic pad (207) is C-shaped. One end of the locking rod (206) passes through the side of the first assembly ring (201) away from the second filter screen (205).

2. The screw pump coupling protection structure according to claim 1, characterized in that: The protective cover (2) also includes a fan blade (209), which is fixed between the second assembly ring (202) and the third assembly ring (204).

3. A screw pump coupling protection structure according to claim 1 or 2, characterized in that: The elastic pad (207) is made of rubber.

4. The screw pump coupling protection structure according to claim 2, characterized in that: The fan blade (209) is located on the middle side of the first filter (203) adjacent to the coupling (1).

5. A screw pump coupling protection structure according to claim 1 or 2, characterized in that: The width of the cross section where the clamp (206) passes through the first assembly ring (201) is less than the maximum cross section width of the clamp (206).

6. A screw pump coupling protection structure according to claim 1 or 2, characterized in that: The outer ring end of the limiting ring (208) is convex arc-shaped.

7. A screw pump coupling protection structure according to claim 1 or 2, characterized in that: The coupling (1) includes an elastic body (101), a claw disc (102) and a shaft connector (103). There are two claw discs (102). One end of the claw disc (102) is fixed with a shaft connector (103). The claw discs (102) are fastened together by the elastic body (101).

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