Simple and replaceable sealing pump cover

Abstract

The utility model discloses a simple replaceable seal pump cover, which comprises a cover body and a pump shaft, the inner surface wall of the cover body is detachably connected with a seal cavity, and a seal assembly used for the seal fit of the cover body and the pump shaft is arranged between the seal cavity and the pump shaft. The cover body is fixed to the first sealing cavity through the screw, the packing piece and the packing ring are arranged in the first sealing cavity, the packing gland is installed on the first sealing cavity, the shaft sleeve is installed on the pump shaft, cooling water is added through the cooling water connector, and therefore packing sealing of the pump cover and the pump shaft is achieved, and the cover body and the second sealing cavity are fixed through the screw. The pressing plate is installed on the pump shaft, and the mechanical seal is installed among the pressing plate, the pump shaft and the second sealing cavity, so that it can be guaranteed that the pump cover is unchanged, different sealing assemblies are selected and matched according to different connection requirements, the pump cover does not need to be subjected to mold opening again, and the casting cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pump cover technology, and in particular to a simple and replaceable pump cover. Background Technology

[0002] The pump cover is an important component of pump equipment. It is usually located on the top of the pump or other critical locations. Its main function is to seal the components inside the pump body, protect the pump interior from external contamination, and ensure the normal operation of the pump.

[0003] Chinese Patent Publication No. CN209145842U, published on July 23, 2019, discloses a pump cover comprising a metal skeleton layer and a non-metallic inner liner layer, with the non-metallic inner liner layer covering the inner surface of the metal skeleton layer. During operation, the medium only contacts the non-metallic inner liner layer on the pump cover and does not contact the metal skeleton layer, thus avoiding corrosion of the metal skeleton layer by the medium and extending the service life of the pump cover. A groove I and a transition structure are provided on the metal skeleton layer; the non-metallic inner liner layer completely fills the groove I and the transition structure. The design of the groove I and the transition structure allows the non-metallic inner liner layer to fill within them, increasing the contact area between the non-metallic inner liner layer and the metal skeleton layer, and improving the bonding force between the two.

[0004] The existing pump covers and pump shafts are mostly sealed by mechanical seals and packing seals. However, existing pump covers, as mentioned above, can only be used for one type. Different types of seals require pump covers with different structures, resulting in high production costs. Therefore, there is an urgent need to propose a simple and replaceable pump cover to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a simple and replaceable pump cover to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A simple, replaceable seal pump cover includes a cover body and a pump shaft. The inner surface of the cover body is detachably connected to a sealing cavity, and a sealing assembly for sealing the cover body and the pump shaft is provided between the sealing cavity and the pump shaft.

[0008] Preferably, the sealing cavity includes a first sealing cavity, the sealing assembly includes a bushing installed on the outer wall of the pump shaft, a packing element and a packing ring are integrated between the bushing and the first sealing cavity, a packing gland is fixedly connected to the outer wall of the first sealing cavity, and a cooling water interface is integrated inside the first sealing cavity.

[0009] Preferably, the sealing cavity includes a second sealing cavity, and the sealing assembly includes a pressure plate fixedly connected to the outer wall of the pump shaft. A mechanical seal is fixedly connected between the pressure plate, the second sealing cavity, and the pump shaft.

[0010] Preferably, both the first sealing cavity and the second sealing cavity are fixedly connected to the cover body by multiple sets of screws, and the multiple sets of screws are arranged in a ring, with each set of screws passing horizontally through the cover body through multiple sets of perforations.

[0011] Preferably, the cover has horizontally penetrating bolt holes.

[0012] Preferably, an O-ring is integrated between the outer wall of the arc-shaped end of both the first and second sealing cavities and the inner wall of the cover.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] 1. In this application, the cover is fixed to the sealing cavity one by screws, the packing and packing ring are placed in the sealing cavity one, the packing gland is installed on the sealing cavity one, the bushing is installed on the pump shaft, and cooling water is added through the cooling water interface to achieve packing seal between the pump cover and the pump shaft. Similarly, the cover is fixed to the sealing cavity two by screws, the pressure plate is installed on the pump shaft, and the mechanical seal is installed between the pressure plate, the pump shaft and the sealing cavity two. This ensures that the pump cover remains unchanged, and different sealing components can be selected according to different connection requirements. The pump cover does not need to be re-molded, which reduces the casting cost.

[0015] 2. In this application, both sealing cavity one and sealing cavity two are connected and fixed to the cover body by screws. At the same time, bolt holes are provided on the cover body. After the screws are separated, the cover body can be quickly separated by screwing in hexagonal bolts of sufficient length, thereby ensuring the convenience of using the simple and replaceable pump cover. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0017] Figure 2 A schematic diagram of a mechanical seal structure according to an embodiment of the present invention is shown;

[0018] Figure 3 A schematic diagram of a bolt hole structure according to an embodiment of the present invention is shown;

[0019] Figure 4 A schematic diagram of a perforated structure according to an embodiment of the present invention is shown.

[0020] Legend:

[0021] 1. Cover; 2. O-ring; 3. Sealing cavity one; 4. Packing parts; 5. Packing gland; 6. Packing ring; 7. Cooling water interface; 8. Shaft sleeve; 9. Pump shaft; 10. Sealing cavity two; 11. Mechanical seal; 12. Pressure plate; 13. Screw; 14. Through hole; 15. Bolt hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A simple replaceable seal pump cover includes a cover body 1 and a pump shaft 9. The inner surface of the cover body 1 is detachably connected to a sealing cavity, and a sealing assembly for sealing the cover body 1 and the pump shaft 9 is provided between the sealing cavity and the pump shaft 9. The sealing cavity includes a first sealing cavity 3. The sealing assembly includes a bushing 8 installed on the outer surface of the pump shaft 9. A packing element 4 and a packing ring 6 are integrated between the bushing 8 and the first sealing cavity 3. A packing gland 5 is fixedly connected to the outer surface of the first sealing cavity 3. A cooling water interface 7 is integrated inside the first sealing cavity 3. The sealing cavity includes a second sealing cavity 10. The sealing assembly includes a pressure plate 12 fixedly connected to the outer surface of the pump shaft 9. A mechanical seal 11 is fixedly connected between the pressure plate 12, the second sealing cavity 10 and the pump shaft 9.

[0025] The cover 1 is fixed to the sealing cavity 3 by screw 13. The packing 4 and packing ring 6 are placed in the sealing cavity 3. The packing gland 5 is installed on the sealing cavity 3. The bushing 8 is installed on the pump shaft 9. Cooling water is added through the cooling water interface 7 to achieve packing seal between the cover 1 and the pump shaft 9. Similarly, the cover 1 is fixed to the sealing cavity 10 by screw 13. The pressure plate 12 is installed on the pump shaft 9. The mechanical seal 11 is installed between the pressure plate 12, the pump shaft 9 and the sealing cavity 10. This ensures that the cover 1 remains unchanged. Different sealing components can be selected according to different connection requirements. The cover 1 does not need to be re-molded, which reduces the casting cost.

[0026] Specifically, such as Figure 2 and Figure 4As shown, both sealing cavity 1 (3) and sealing cavity 2 (10) are fixedly connected to the cover body 1 by multiple sets of screws 13, which are arranged in a ring. The screws 13 pass horizontally through the cover body 1 through multiple sets of through holes 14. The cover body 1 has horizontally penetrating bolt holes 15. Both sealing cavity 1 (3) and sealing cavity 2 (10) are connected and fixed to the cover body 1 by screws 13. At the same time, the cover body 1 has bolt holes 15. After separating the screws 13, the cover body 1 can be quickly separated by screwing in a hexagonal bolt of sufficient length to push sealing cavity 1 (3) or sealing cavity 2 (10). This ensures the convenience of using the simple and replaceable pump cover.

[0027] Specifically, such as Figure 2 and Figure 3 As shown, O-rings 2 are integrated between the outer wall of the arc-shaped end of sealing cavity 11 and sealing cavity 210 and the inner wall of cover 1, thereby ensuring the sealing between sealing cavity 11 and sealing cavity 210 and cover 1.

[0028] Working principle: The cover 1 is fixed to the sealing cavity 3 by the screw 13. The packing 4 and the packing ring 6 are placed in the sealing cavity 3. The packing gland 5 is installed on the sealing cavity 3. The bushing 8 is installed on the pump shaft 9. Cooling water is added through the cooling water interface 7 to achieve packing seal between the cover 1 and the pump shaft 9. Similarly, the cover 1 is fixed to the sealing cavity 10 by the screw 13. The pressure plate 12 is installed on the pump shaft 9. The mechanical seal 11 is installed between the pressure plate 12, the pump shaft 9 and the sealing cavity 10 to ensure that the cover 1 remains unchanged. Different sealing components can be selected according to different connection requirements. The cover 1 does not need to be re-molded, which reduces the casting cost. Both the sealing cavity 3 and the sealing cavity 10 are connected and fixed to the cover 1 by the screw 13. At the same time, bolt holes 15 are opened on the cover 1. After separating the screw 13, the sealing cavity 3 or the sealing cavity 10 can be quickly separated by screwing in a sufficiently long hexagonal bolt, thus ensuring the convenience of using the simple and replaceable seal pump cover.

[0029] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A simple, replaceable, and sealable pump cover, comprising a cover body (1) and a pump shaft (9), characterized in that, The inner wall of the cover (1) is detachably connected to a sealing cavity, and a sealing assembly for sealing the cover (1) and the pump shaft (9) is provided between the sealing cavity and the pump shaft (9). The sealing cavity includes a first sealing cavity (3), and the sealing assembly includes a bushing (8) installed on the outer wall of the pump shaft (9). A packing element (4) and a packing ring (6) are integrated between the bushing (8) and the first sealing cavity (3). A packing gland (5) is fixedly connected to the outer wall of the first sealing cavity (3). A cooling water interface (7) is integrated inside the first sealing cavity (3). The sealing cavity includes a second sealing cavity (10). The sealing assembly includes a pressure plate (12) fixedly connected to the outer wall of the pump shaft (9). A mechanical seal (11) is fixedly connected between the pressure plate (12), the second sealing cavity (10), and the pump shaft (9).

2. The simple, replaceable, and sealable pump cover according to claim 1, characterized in that, Both the first sealing cavity (3) and the second sealing cavity (10) are fixedly connected to the cover (1) by multiple sets of screws (13), and the multiple sets of screws (13) are arranged in a ring. The multiple sets of screws (13) pass horizontally through the cover (1) through multiple sets of through holes (14).

3. The simple replaceable seal pump cover according to claim 2, characterized in that, The cover (1) has horizontal through bolt holes (15).

4. The simple, replaceable, and sealable pump cover according to claim 3, characterized in that, The outer wall of the arc-shaped end of the sealing cavity one (3) and the sealing cavity two (10) are both integrated with the inner wall of the cover (1) with an O-ring (2).

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