Rear cover for composite die-casting pump

Abstract

The utility model belongs to the technical field of pumps, and particularly relates to a rear cover for a composite die-casting pump, which comprises a pump body and a rear cover, and is characterized in that a plurality of threaded holes are circumferentially distributed on the connecting surface of the pump body and the rear cover at equal intervals, cross bolts are mounted in the threaded holes, and a limiting piece is arranged at one end of the rear cover far away from the pump body. The limiting part corresponds to the cross bolt in position, the limiting part is used for limiting the cross bolt in the screw hole, the sealing assembly is installed on the outer wall of the rear cover and the outer wall of the pump body, and the problems that due to the fact that the bolt is prone to loosening, the sealing performance of the rear cover is reduced, liquid leaks, normal operation of the pump is affected, and the service life of the pump is prolonged are solved. And even mechanical faults are caused.

Description

Technical Field

[0001] The utility model belongs to the technical field of pumps, and in particular relates to a rear cover for a composite die-casting pump. Background Art

[0002] With the rapid development of industrial technology, pump equipment is increasingly used in many fields, such as petrochemical, machinery manufacturing, environmental water treatment, etc. Among them, composite die-casting pumps have gradually occupied a place in the market with their unique structure and performance advantages. The back cover of the composite die-casting pump is an important part of the pump, and its performance directly affects the overall operating efficiency and service life of the pump.

[0003] The sealing between the pump back cover and the pump body is crucial to prevent medium leakage and ensure the performance of the pump. However, the traditional pump back cover and pump are usually connected by bolts. During the long-term use of the pump, the bolts are easy to loosen, resulting in reduced sealing of the back cover, causing liquid leakage, affecting the normal operation of the pump, and even causing mechanical failure. Utility Model Content

[0004] The purpose of the utility model is to provide a back cover for a composite die-casting pump in view of the above-mentioned technical problems, so as to solve the problem that the bolts are easy to loosen, resulting in reduced sealing of the back cover, causing liquid leakage, affecting the normal operation of the pump, and even causing mechanical failure.

[0005] In view of this, the utility model provides a back cover for a composite die-casting pump, comprising: a pump body and a back cover, characterized in that the connecting surfaces of the pump body and the back cover are evenly distributed circumferentially with a plurality of threaded holes, cross bolts are installed in the threaded holes, and a limit piece is provided at one end of the back cover away from the pump body, the limit piece corresponds to the position of the cross bolt, and the limit piece is used to limit the cross bolt in the screw hole, and also includes: a sealing assembly, which is installed on the outer wall of the back cover and the pump body.

[0006] In the present technical solution, the rear cover and the pump body are fixedly connected by a number of cross bolts. The threaded holes of the rear cover and the pump body are circumferentially equidistantly distributed, ensuring the uniformity and stability of the connection. A limiter is provided at the end of the rear cover away from the pump body, corresponding to the position of the cross bolt. The limiter limits the rotation of the bolt, thereby preventing the bolt from loosening. At the same time, the sealing assembly is installed on the outer wall of the rear cover and the pump body, providing additional sealing protection. The sealing assembly can effectively prevent liquid leakage and keep the internal pressure of the pump stable.

[0007] In the above technical solution, further, the limiting member includes: a limiting frame, a limiting plate is slidably connected inside the limiting frame, and the lower surface of the limiting plate is in contact with the top end of the cross bolt.

[0008] In this technical solution, the cross bolt is passed through the threaded holes of the rear cover and the pump body and tightened, and the limit plate is slid so that its lower surface fits tightly against the top of the cross bolt. As the pump runs, if the bolt begins to loosen due to vibration, the bolt may rotate and loosen in the traditional design, but in the design, the rotation of the cross bolt will be blocked by the limit plate, thereby effectively preventing the rear cover from falling off or leaking due to loose bolts, thereby improving the overall safety of the pump.

[0009] In the above technical solution, further, a sliding block is fixedly connected to the outer side of the upper surface of the limiting plate.

[0010] In this technical solution, the staff can conveniently slide the limit plate out of the limit frame through the slider.

[0011] In the above technical solution, further, the connecting surface between the pump body and the rear cover is provided with guide grooves equidistantly in the circumferential direction, and the connecting surface between the rear cover and the pump body is provided with guide blocks matched with the guide grooves.

[0012] In the technical solution, by providing the guide block and the guide groove, the pump body and the rear cover can be smoothly docked, so that the threaded holes on the pump body and the rear cover are aligned, making the cross screw assembly faster and easier.

[0013] In the above technical solution, further, a first sealing ring is fixedly connected to the connecting surface between the rear cover and the pump body, and the outer wall of the first sealing ring is tightly fitted with the inner wall of the pump body.

[0014] In the technical solution, a sealing ring is directly provided between the rear cover and the pump body, thereby improving the sealing performance of the rear cover and thus preventing the possibility of liquid leakage.

[0015] In the above technical solution, further, the sealing assembly includes: a second sealing ring, the second sealing ring is sleeved on the outer wall of the rear cover and the pump body, the outer wall of the second sealing ring is provided with a clamp, and the surface of the clamp is threadedly connected with two fixing bolts.

[0016] In the present technical solution, a double sealing system is formed through the joint action of the first sealing ring and the second sealing ring, which greatly improves the overall sealing performance of the pump body. The design of the clamp provides additional support for the sealing ring, ensuring the stability of the sealing ring under pressure changes or vibration conditions. At the same time, the two fixing bolts are connected through threads on the surface of the clamp, providing the clamp with uniform and reliable tightening force, thereby improving the firmness of the seal between the rear cover and the pump body.

[0017] The beneficial effects of the utility model are:

[0018] 1. Pass the cross bolt through the threaded holes of the rear cover and the pump body and tighten it. Slide the limit plate so that its lower surface fits tightly against the top of the cross bolt. As the pump runs, if the bolt begins to loosen due to vibration, the bolt may rotate and loosen in the traditional design. However, in the design, the rotation of the cross bolt will be blocked by the limit plate, thereby effectively preventing the rear cover from falling off or leaking due to loose bolts, and improving the overall safety of the pump.

[0019] 2. A double sealing system is formed through the joint action of the first sealing ring and the second sealing ring, which greatly improves the overall sealing performance of the pump body. The design of the clamp provides additional support for the sealing ring, ensuring the stability of the sealing ring under pressure changes or vibration conditions. At the same time, the two fixing bolts are connected through threads on the surface of the clamp, which provides a uniform and reliable fastening force for the clamp and improves the firmness of the seal between the rear cover and the pump body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a rear cover for a composite die-casting pump of the utility model;

[0021] Figure 2 This is an exploded view of a rear cover for a composite die-casting pump of the utility model;

[0022] Figure 3 This is a structural schematic diagram of a rear cover sealing assembly for a composite die-casting pump of the utility model;

[0023] The symbols in the figure are:

[0024] 1. Pump body; 2. Back cover; 3. Limiting piece; 4. Sealing assembly; 5. Threaded hole; 6. Guide groove; 7. Cross bolt; 8. Guide block; 9. Limiting frame; 10. Limiting plate; 11. Slider; 12. First sealing ring; 13. Second sealing ring; 14. Clamp; 15. Fixing bolt. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0028] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words 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, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0029] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0030] Embodiment 1:

[0031] Depend on Figure 1-3 As shown, this embodiment provides a back cover 2 for a composite die-casting pump, including: a pump body 1 and a back cover 2, characterized in that the connecting surfaces of the pump body 1 and the back cover 2 are evenly distributed circumferentially with a plurality of threaded holes 5, and a cross bolt 7 is installed in the threaded hole 5. A limit member 3 is provided at the end of the back cover 2 away from the pump body 1, and the limit member 3 corresponds to the position of the cross bolt 7. The limit member 3 is used to limit the cross bolt 7 in the screw hole, and also includes: a sealing assembly 4, and the sealing assembly 4 is installed on the outer wall of the back cover 2 and the pump body 1.

[0032] The rear cover 2 and the pump body 1 are fixedly connected by a number of cross bolts 7. The threaded holes 5 of the rear cover 2 and the pump body 1 are circumferentially equidistantly distributed, ensuring the uniformity and stability of the connection. A limiter 3 is provided at the end of the rear cover 2 away from the pump body 1, corresponding to the position of the cross bolt 7. The limiter 3 limits the rotation of the bolt, thereby preventing the bolt from loosening. At the same time, the sealing assembly 4 is installed on the outer wall of the rear cover 2 and the pump body 1, providing additional sealing protection. The sealing assembly 4 can effectively prevent liquid leakage and keep the internal pressure of the pump stable.

[0033] Furthermore, the limiting member 3 includes: a limiting frame 9, a limiting plate 10 is slidably connected inside the limiting frame 9, and the lower surface of the limiting plate 10 is in contact with the top of the cross bolt 7. The cross bolt 7 is passed through the threaded holes 5 of the rear cover 2 and the pump body 1 and tightened, and the limiting plate 10 is slid so that its lower surface is in close contact with the top of the cross bolt 7. As the pump runs, if the bolt begins to loosen due to vibration, the bolt may rotate and loosen in the traditional design, but in the design, the rotation of the cross bolt 7 will be blocked by the limiting plate 10, thereby effectively preventing the rear cover 2 from falling off or leaking due to the loosening of the bolt, thereby improving the overall safety of the pump.

[0034] Furthermore, a slider 11 is fixedly connected to the outer side of the upper surface of the limiting plate 10. The staff can slide the limiting plate 10 out of the limiting frame 9 conveniently through the slider 11.

[0035] Furthermore, the connection surface between the pump body 1 and the rear cover 2 is provided with guide grooves 6 at equal intervals in the circumferential direction, and the connection surface between the rear cover 2 and the pump body 1 is provided with guide blocks 8 adapted to the guide grooves 6. By providing the guide blocks 8 and the guide grooves 6, the pump body 1 and the rear cover 2 can be smoothly docked, so that the threaded holes 5 on the pump body 1 and the rear cover 2 are aligned, making the cross screw assembly faster and easier.

[0036] Furthermore, a first sealing ring 12 is fixedly connected to the connection surface between the rear cover 2 and the pump body 1, and the outer wall of the first sealing ring 12 is tightly fitted with the inner wall of the pump body 1. By directly arranging the sealing ring between the rear cover 2 and the pump body 1, the sealing performance of the rear cover 2 is improved, thereby preventing the possibility of liquid leakage.

[0037] Furthermore, the sealing assembly 4 includes: a second sealing ring 13, the second sealing ring 13 is sleeved on the outer wall of the rear cover 2 and the pump body 1, and a clamp 14 is provided on the outer wall of the second sealing ring 13, and two fixing bolts 15 are threadedly connected to the surface of the clamp 14. Through the joint action of the first sealing ring 12 and the second sealing ring 13, a double sealing system is formed, which greatly improves the overall sealing performance of the pump body 1. The design of the clamp 14 provides additional support for the sealing ring, ensuring the stability of the sealing ring under pressure changes or vibration conditions. At the same time, the two fixing bolts 15 are connected through the threads on the surface of the clamp 14, providing the clamp 14 with a uniform and reliable fastening force, thereby improving the firmness of the seal between the rear cover 2 and the pump body 1.

[0038] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A back cover for a composite die-casting pump, comprising: A pump body (1) and a rear cover (2), characterized in that the connection surfaces of the pump body (1) and the rear cover (2) are evenly spaced and circumferentially distributed with a plurality of threaded holes (5), a cross bolt (7) is installed in the threaded hole (5), a limiting member (3) is provided at one end of the rear cover (2) away from the pump body (1), the limiting member (3) corresponds to the position of the cross bolt (7), the limiting member (3) is used to limit the cross bolt (7) in the screw hole, and also includes: a sealing component (4), the sealing component (4) is installed on the outer wall of the rear cover (2) and the pump body (1).

2. The back cover for a composite die-casting pump according to claim 1, characterized in that: The limiting member (3) comprises a limiting frame (9), a limiting plate (10) slidably connected inside the limiting frame (9), and a lower surface of the limiting plate (10) is in contact with the top end of the cross bolt (7).

3. The rear cover for a composite die-casting pump according to claim 2, characterized in that: A sliding block (11) is fixedly connected to the outer side of the upper surface of the limiting plate (10).

4. The rear cover for a composite die-casting pump according to claim 3, characterized in that: The connection surface between the pump body (1) and the rear cover (2) is provided with guide grooves (6) at equal intervals in the circumferential direction, and the connection surface between the rear cover (2) and the pump body (1) is provided with guide blocks (8) matched with the guide grooves (6).

5. The rear cover for a composite die-casting pump according to claim 4, characterized in that: A first sealing ring (12) is fixedly connected to the connection surface between the rear cover (2) and the pump body (1), and the outer wall of the first sealing ring (12) is tightly fitted to the inner wall of the pump body (1).

6. The rear cover for a composite die-casting pump according to claim 5, characterized in that: The sealing assembly (4) comprises: a second sealing ring (13), the second sealing ring (13) being sleeved on the outer wall of the rear cover (2) and the pump body (1), the outer wall of the second sealing ring (13) being provided with a clamp (14), the bottom end of the clamp (14) being threadedly connected to two fixing bolts (15).

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