A pump cover of a circulating pump

Abstract

The utility model discloses a pump cover of circulating pump relates to circulating pump technical field, including base and lid, the top detachable connection of base has the lid, the upper end surface of base is established with annular embedding groove, the outer surface of embedding groove is established with six clamping grooves, the middle part detachable connection of embedding groove has seal shell. This pump cover of circulating pump is through the snap of seal shell in base annular embedding groove and the clamping groove adaptation realizes the primary positioning, and then combines the spring leaf's elastic top tight effect in seal shell annular containing groove, cooperates the accurate positioning of spring leaf T type butt joint ring and lip seal ring butt joint groove, can ensure that lip seal ring closely fits lid bottom, and the O type ring on the top of lip seal ring and lid sealing groove further form double -sealed structure, can effectively block the fluid leakage in circulating pump, and the spring leaf's elasticity can compensate the slight loss after long -term use of sealing element, prolongs the seal failure period.

Description

Technical Field

[0001] This utility model relates to the field of circulating pump technology, specifically a pump cover for a circulating pump. Background Technology

[0002] As a key piece of equipment in liquid conveying systems, circulating pumps are widely used in heating, air conditioning, water supply and drainage, and industrial fluid circulation. As one of the core components of a circulating pump, the pump cover's main function is to seal the internal cavity of the pump body, prevent fluid leakage, and provide stable mounting support for rotating components such as the impeller.

[0003] However, existing circulating pumps still have some problems in use: An existing pump cover sealing structure, such as the one described in application number CN202322769393.X, includes a pump body, a pump cover, and an installation mechanism. This utility model belongs to the technical field of pump body connection structure. In this utility model, the inserts on the mounting ring A are inserted into the slots, so that the lower surfaces of the inserts and the lower surfaces of the two sealing strips are in sealing contact with the upper surfaces of the sealing plate and the upper surface of the mounting ring B, respectively. Then, by passing one end of the bolt through the corresponding screw holes on the mounting ring A, mounting ring B, and inserts, the mounting rings A and B are tightened. During the tightening process of the bolts on the mounting rings A and B, the inserts press the sealing plate and the two sealing strips press the mounting ring B, achieving multi-layer sealing at the connection between the pump body and the pump cover through the tightening of six bolts. Moreover, the technical effect is that the sealing structure is not affected when the bolts are disassembled or installed. The existing connection between the pump cover and the pump body is usually sealed only by tightening the sealing gasket with bolts. After long-term use, the sealing gasket is prone to aging and deformation due to fluid pressure fluctuations and temperature changes, which can lead to fluid leakage. This not only affects the working efficiency of the circulating pump, but may also cause equipment failure or safety hazards. Therefore, we propose a pump cover for a circulating pump to address the problems mentioned above. Utility Model Content

[0004] The purpose of this utility model is to provide a pump cover for a circulating pump, in order to solve the problem mentioned in the background art that the connection between the pump cover and the pump body is usually sealed only by tightening the sealing gasket with bolts. After long-term use, the sealing gasket is prone to aging and deformation due to fluid pressure fluctuations and temperature changes, resulting in fluid leakage. This not only affects the working efficiency of the circulating pump, but may also cause equipment failure or safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pump cover for a circulating pump, comprising a base and a cover body, wherein the cover body is detachably connected to the top of the base, an annular embedding groove is formed on the upper end face of the base, six slots are formed on the outer surface of the embedding groove, a sealing shell is detachably connected to the middle of the embedding groove, six buckles that fit the slots are fixed at the bottom of the outer ring of the sealing shell, an annular receiving groove is formed in the middle of the sealing shell, a spring sheet is placed at the bottom of the receiving groove, a T-shaped mating ring is integrally formed on the upper end face of the spring sheet, a lip seal is placed inside the receiving groove and on the upper end face of the spring sheet, a mating groove that fits the mating ring is formed at the bottom of the lip seal, an O-ring is embedded above the lip seal, and a sealing groove that fits the O-ring is formed at the bottom of the cover body.

[0006] Using the above technical solution, the sealing shell and the base can be detachably connected through slots and buckles. The spring sheet inside the sealing shell pushes the lip seal ring with elastic force. Combined with the fit between the lip seal ring and the sealing groove of the cover and the assistance of the O-ring, a sealing structure is constructed. This allows the base, sealing shell, cover and other components of the pump cover to be easily disassembled and assembled. At the same time, the multiple sealing design blocks the leakage path of fluid in the circulating pump, ensuring the normal operation of the equipment.

[0007] Preferably, the outer surface of the base has six mounting holes, which are evenly distributed along the circumference of the base.

[0008] Using the above technical solution, six mounting holes are evenly opened along the circumference on the outer surface of the base. By inserting bolts and other fasteners into the mounting holes, the base can be aligned and fixed with the circulating pump body structure. The evenly distributed mounting holes allow the fixing force to be evenly transmitted in the circumferential direction of the base, avoiding structural deformation caused by uneven local force. At the same time, it achieves a stable connection between the base and related components, providing a reliable foundation for the overall assembly of the pump cover.

[0009] Preferably, the upper end face of the base is provided with six positioning holes in a ring, and the outer edge of the cover is provided with six through holes corresponding to the positioning holes, with positioning pins passing through the middle of the positioning holes and through holes.

[0010] Using the above technical solution, the six positioning holes on the upper surface of the base correspond one-to-one with the six through holes on the edge of the cover. By passing the positioning pin through the corresponding hole, the base and the cover are precisely aligned. This can quickly determine the assembly position of the base and the cover, avoid misalignment that affects the sealing effect, and keep the two relatively stable during subsequent fixing, preventing displacement during assembly and improving the overall connection stability.

[0011] Preferably, the inner end face of the positioning hole has an internal thread structure, and the bottom end of the positioning pin has an external thread structure that matches the internal thread of the inner end face of the positioning hole, and the top end of the positioning pin has a hexagonal structure.

[0012] With the above technical solution, the internal thread at the inner end of the positioning hole is compatible with the external thread at the bottom of the positioning pin, and the two can be connected by screwing. At the same time, the hexagonal structure at the top of the positioning pin makes it easy to screw in or out with the help of tools. The threaded connection can enhance the connection stability between the positioning pin and the positioning hole, and prevent the positioning pin from loosening and falling off. The hexagonal structure makes the disassembly and assembly of the positioning pin more convenient, and improves the efficiency of pump cover assembly and maintenance.

[0013] Preferably, the outer surface of the cover has twelve heat dissipation channels, and the heat dissipation channels are connected to the outside of the cover. A heat-conducting plate is embedded in the middle of the heat dissipation channel. A heat dissipation fin is fixed on one side of the heat-conducting plate, and the outer end of the heat dissipation fin extends to the outside of the heat dissipation channel of the cover. The heat dissipation fin and the heat-conducting plate are both fixed to the middle of the heat dissipation channel by adhesive.

[0014] Using the above technical solution, the heat dissipation channel on the inner wall of the cover is connected to the outside. The heat-conducting sheet fixed in the channel conducts the heat inside the cover to the heat dissipation fins extending outside the channel. The heat is carried away by the air circulation. The cooperation between the heat-conducting sheet and the heat dissipation fins accelerates the dissipation of heat inside the cover, avoiding the impact of high temperature on the performance of the pump cover components. At the same time, the adhesive fixing method ensures the stability of the heat dissipation structure and ensures the continuous and reliable heat dissipation effect.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. Initial positioning is achieved by the buckle and groove of the sealing shell embedded in the annular groove of the base. Combined with the elastic pressing action of the spring plate in the annular receiving groove of the sealing shell, and the precise positioning of the spring plate T-shaped mating ring and the lip seal ring mating groove, it can ensure that the lip seal ring fits tightly against the bottom of the cover. At the same time, the O-ring above the lip seal ring and the sealing groove of the cover further form a double sealing structure, which can effectively block the internal fluid leakage of the circulating pump. In addition, the elasticity of the spring plate can compensate for the slight wear of the seal after long-term use and extend the sealing failure cycle. 2. The heat dissipation channel on the inner wall of the cover is connected to the outside. The heat-conducting fins fixed in the channel conduct heat from inside the cover to the heat dissipation fins extending outside the channel. The heat is carried away by air circulation. The cooperation between the heat-conducting fins and the heat dissipation fins accelerates the dissipation of heat inside the cover, avoiding high temperature from affecting the performance of the pump cover components. At the same time, the adhesive fixing method ensures the stability of the heat dissipation structure and ensures the continuous and reliable heat dissipation effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of this utility model from the front view; Figure 2This is a schematic diagram showing the disassembled structure of the cover and base of this utility model; Figure 3 This is a schematic diagram of the connection structure between the sealing shell and the base of this utility model; Figure 4 This is a schematic diagram of the sealing assembly structure of this utility model; Figure 5 This is a schematic diagram of the heat dissipation structure of the cover of this utility model.

[0017] In the diagram: 1. Base; 2. Mounting hole; 3. Positioning hole; 4. Cover; 5. Through hole; 6. Positioning pin; 7. Embedded groove; 8. Slot; 9. Sealing shell; 10. Buckle; 11. Receiving groove; 12. Spring plate; 13. Butt ring; 14. Lip seal; 15. Butt groove; 16. O-ring; 17. Sealing groove; 18. Heat dissipation channel; 19. Heat conduction plate; 20. Heat dissipation fin. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Please see Figures 1-5 This utility model provides a technical solution: a pump cover for a circulating pump includes a base 1 and a cover 4. The cover 4 is detachably connected to the top of the base 1. An annular embedding groove 7 is formed on the upper end face of the base 1. Six slots 8 are formed on the outer surface of the embedding groove 7. A sealing shell 9 is detachably connected to the middle of the embedding groove 7. Six buckles 10 that are adapted to the slots 8 are fixed at the bottom of the outer ring of the sealing shell 9. An annular receiving groove 11 is formed in the middle of the sealing shell 9. A spring plate 12 is placed in the bottom of the receiving groove 11. A T-shaped docking ring 13 is integrally formed on the upper end face of the spring plate 12. A lip seal ring 14 is placed inside the receiving groove 11 and on the upper end face of the spring plate 12. A docking groove 15 adapted to the docking ring 13 is formed at the bottom of the lip seal ring 14. An O-ring 16 is embedded above the lip seal ring 14. A sealing groove 17 adapted to the O-ring 16 is formed at the bottom of the cover 4. The outer surface of the base 1 has six mounting holes 2, which are evenly distributed along the circumference of the base 1.

[0020] The base 1 and the cover 4 are detachably connected, providing a basic condition for the disassembly and internal maintenance of the pump cover. The annular embedded groove 7 on the upper end face of the base 1 serves as the core installation reference. The six slots 8 on its outer surface form a matching structure with the buckle 10 fixed at the bottom of the outer ring of the sealing shell 9. By engaging the buckle 10 into the slot 8, the sealing shell 9 can be quickly positioned and installed in the middle of the embedded groove 7, and the initial stability of the connection between the sealing shell 9 and the base 1 can be ensured. The detachable design facilitates the replacement of sealing-related components later. The annular receiving groove 11 in the middle of the sealing shell 9 provides a bearing space for the sealing components. The spring plate 12 made of steel at the bottom of the receiving groove 11, with its own elastic properties, precisely matches the mating groove 15 at the bottom of the lip seal 14 through the T-shaped mating ring 13 integrally formed on the upper end face, radially positioning the lip seal 14 and preventing it from shifting during operation. On the other hand, the spring plate 12 continuously generates... The tightening force pushes the lip seal 14 to fit tightly against the bottom of the cover 4. The lip seal 14 is made of nitrile rubber and its lip has a semi-arc structure. At the same time, the O-ring 16 embedded above the lip seal 14 and the sealing groove 17 at the bottom of the cover 4 form a secondary seal. The O-ring 16 and the lip seal 14 are tightly fitted and connected, constructing an effective sealing connection structure, effectively blocking the internal fluid leakage of the circulating pump. The six mounting holes 2 evenly distributed along the circumference of the outer surface of the base 1 can be used to stably connect the base 1 to the circulating pump body by passing through bolts or other fasteners. The evenly distributed holes can make the fixing force evenly transmitted along the circumference of the base 1, avoiding excessive local force that could cause deformation of the base 1. In addition, the addition of a sealing ring between the base 1 and the circulating pump body can further increase the sealing effect between the base 1 and the pump body, further blocking fluid leakage, providing reliable installation support for the entire pump cover structure, and ensuring the stability of the pump cover during the operation of the circulating pump.

[0021] The upper surface of the base 1 has six positioning holes 3 arranged in a ring. The outer edge of the cover 4 has six through holes 5 corresponding to the positioning holes 3. Positioning pins 6 pass through the middle of the positioning holes 3 and the through holes 5. The inner end face of the positioning hole 3 has an internal thread structure, and the bottom end of the positioning pin 6 has an external thread structure that matches the internal thread of the inner end face of the positioning hole 3. The top end of the positioning pin 6 has a hexagonal structure.

[0022] The six positioning holes 3 annularly formed on the upper end face of the base 1 correspond one-to-one with the six through holes 5 formed on the outer edge of the cover 4. During assembly, the cover 4 is first placed above the base 1, aligning each through hole 5 with its corresponding positioning hole 3. Then, the positioning pin 6 is inserted through the positioning hole 3 and the middle of the through hole 5. The columnar structure of the positioning pin 6 restricts the relative displacement between the base 1 and the cover 4, achieving initial precise positioning and preventing the cover 4 from shifting during subsequent fixing, which could cause misalignment between the sealing component and the sealing groove 17, thus ensuring the effectiveness of the sealing structure. At the same time, the internal thread structure on the inner end face of the positioning hole 3 corresponds to the outer thread structure on the bottom end of the positioning pin 6. The threaded structure is compatible, and the two can be connected by rotating the positioning pin 6. Compared with simple insertion positioning, the threaded connection can greatly enhance the connection stability between the positioning pin 6 and the base 1, prevent the positioning pin 6 from loosening and falling off due to vibration during the operation of the circulating pump, and further consolidate the relative position of the base 1 and the cover 4. The hexagonal structure at the top of the positioning pin 6 makes it easy to rotate the positioning pin 6 with tools such as hex wrenches, reducing the difficulty of disassembling and assembling the positioning pin 6, improving the assembly efficiency of the pump cover and the convenience of later maintenance. It is consistent with the detachable connection design of the base 1 and the cover 4, and together ensures the convenience of the overall disassembly and maintenance of the pump cover.

[0023] The outer surface of the cover 4 is provided with twelve heat dissipation channels 18, and the heat dissipation channels 18 are connected to the outside of the cover 4. A heat-conducting plate 19 is embedded in the middle of the heat dissipation channel 18. A heat dissipation fin 20 is fixed on one side of the heat-conducting plate 19, and the outer end of the heat dissipation fin 20 extends to the outside of the heat dissipation channel 18 of the cover 4. The heat dissipation fin 20 and the heat-conducting plate 19 are both fixed to the middle of the heat dissipation channel 18 by adhesive.

[0024] Multiple heat dissipation channels 18 are formed on the inner wall of the cover 4 and connected to the outside, forming a channel for heat transfer from the inside of the cover 4 to the outside. When the circulating pump is running, the heat generated inside the cover 4 due to bearing operation can be conducted to the inner wall of the heat dissipation channels 18. Twelve heat dissipation channels 18 are evenly distributed along the outer surface of the cover 4 and along the circumference of the cover 4. The heat-conducting fins 19 embedded in the middle of the heat dissipation channels 18 have excellent thermal conductivity and can quickly absorb the heat from the inner wall of the heat dissipation channels 18 and transfer the heat to the heat dissipation fins 20 fixed on one side. The heat dissipation fins 20 are designed to correspond one-to-one with the heat dissipation channels 18. Since the outer ends of the heat dissipation fins 20 extend to The heat dissipation channel 18 of the cover 4 is external, allowing it to fully contact the outside air. Through air convection, heat is dissipated into the air, thus effectively venting the heat inside the cover 4 and preventing excessive internal temperature from affecting the performance of the sealing components and the overall service life of the pump cover. At the same time, the heat dissipation fins 20 and the heat-conducting plates 19 are fixed to the middle of the heat dissipation channel 18 by adhesive. This fixing method is simple to operate and ensures that the two are tightly attached to the inner wall of the heat dissipation channel 18. This ensures smooth heat transfer and prevents the heat dissipation fins 20 and the heat-conducting plates 19 from loosening or shifting during the vibration of the circulating pump, ensuring the long-term stable function of the heat dissipation structure.

[0025] Working principle: For the pump cover of this type of circulating pump, firstly, bolts are inserted through the six evenly distributed mounting holes 2 on the outer surface of the base 1 to fix the base 1 to the pump body; then, the buckle 10 at the bottom of the outer ring of the sealing shell 9 is inserted into the groove 8 of the annular embedding groove 7 on the upper end face of the base 1 to complete the positioning and installation of the sealing shell 9; then, the spring plate 12 and the lip seal 14 are placed in the annular receiving groove 11 of the sealing shell 9 in sequence, so that the T-shaped mating ring 13 of the spring plate 12 matches the mating groove 15 at the bottom of the lip seal 14; then, the cover 4 is placed above the base 1, so that the six through holes 5 on the outer edge of the cover 4 match the groove 8 on the upper end face of the base 1. The six positioning holes 3 are aligned, and the positioning pin 6, which has a hexagonal structure at the top and an external thread at the bottom, is inserted through the through hole 5 and screwed into the internal thread of the positioning hole 3 to achieve positioning and fixation of the cover 4 and the base 1. At this time, the sealing groove 17 at the bottom of the cover 4 is in contact with the O-ring 16 above the lip seal ring 14, and the spring plate 12 elastically presses to strengthen the seal. When the circulation pump is running, the heat inside the cover 4 is conducted to the embedded heat-conducting plate 19 through the heat dissipation channel 18 on the inner wall, and then transferred by the heat-conducting plate 19 to the heat dissipation fins 20 extending outside the channel. The heat dissipation is completed by air convection, and the heat-conducting plate 19 and the heat dissipation fins 20 are fixed in the heat dissipation channel 18 by adhesive to maintain stability.

[0026] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pump cover for a circulating pump, comprising a base (1) and a cover body (4), characterized in that: A cover (4) is detachably connected to the top of the base (1). An annular embedding groove (7) is provided on the upper end face of the base (1). Six slots (8) are provided on the outer surface of the embedding groove (7). A sealing shell (9) is detachably connected to the middle of the embedding groove (7). Six buckles (10) that are compatible with the slots (8) are fixed at the bottom of the outer ring of the sealing shell (9). An annular receiving groove (11) is provided in the middle of the sealing shell (9). The inner bottom of the receiving groove (11) is placed with... There is a spring sheet (12), and a T-shaped mating ring (13) is integrally formed on the upper end face of the spring sheet (12). A lip seal (14) is placed inside the receiving groove (11) and on the upper end face of the spring sheet (12). A mating groove (15) adapted to the mating ring (13) is opened at the bottom of the lip seal (14). An O-ring (16) is embedded above the lip seal (14). A sealing groove (17) adapted to the O-ring (16) is opened at the bottom of the cover (4).

2. The pump cover of a circulating pump according to claim 1, characterized in that: The base (1) has six mounting holes (2) on its outer surface, and the mounting holes (2) are evenly distributed along the circumference of the base (1).

3. The pump cover of a circulating pump according to claim 1, characterized in that: The upper end face of the base (1) is provided with six positioning holes (3) in a ring shape, and the outer edge of the cover (4) is provided with six through holes (5) corresponding to the positioning holes (3). The positioning holes (3) and the through holes (5) are provided with positioning pins (6) passing through the middle of the positioning holes (3) and the through holes (5).

4. The pump cover of a circulating pump according to claim 3, characterized in that: The inner end face of the positioning hole (3) has an internal thread structure, and the bottom end of the positioning pin (6) has an external thread structure that matches the internal thread of the inner end face of the positioning hole (3), and the top end of the positioning pin (6) has a hexagonal structure.

5. The pump cover of a circulating pump according to claim 1, characterized in that: The outer surface of the cover (4) is provided with twelve heat dissipation channels (18), and the heat dissipation channels (18) are connected to the outside of the cover (4). A heat-conducting plate (19) is embedded in the middle of the heat dissipation channel (18). A heat dissipation fin (20) is fixed on one side of the heat-conducting plate (19), and the outer end of the heat dissipation fin (20) extends to the outside of the heat dissipation channel (18) of the cover (4). The heat dissipation fin (20) and the heat-conducting plate (19) are both fixed to the middle of the heat dissipation channel (18) by adhesive.

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