Pump body casting with self-compensation sealing structure

Abstract

The utility model discloses a pump body casting with a self-compensation sealing structure, which relates to the technical field of pump body castings, and comprises a pump body casting body, an annular plate is fixedly sleeved on the outer surface of the upper part of the pump body casting body, and two support rods are symmetrically and fixedly connected on the upper surface of the annular plate. The rod walls of the two supporting rods are jointly and slidably connected with a cover plate in a sleeving mode, a sealing piece is arranged between the cover plate and the annular plate, clamping grooves are formed in the two ends of the sealing piece, a rebound mechanism is arranged between the two corresponding clamping grooves, and two through holes are formed in the upper surface of the cover plate. Through the design of the first spring and the insertion block of the rebounding mechanism, when the sealing piece is thinned due to frictional wear, the spring releases elastic potential energy to push the insertion block to slide towards the interior of the clamping groove, the thickness loss of the sealing piece is automatically compensated, the sealing piece is always kept in a compressed state, the sealing piece does not need to be frequently replaced manually, and the maintenance cost is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of pump body casting technology, specifically to a pump body casting with a self-compensating sealing structure. Background Technology

[0002] A pump is a machine that transports or pressurizes fluids. It transfers the mechanical energy of a prime mover or other external energy to a liquid, increasing the liquid's energy. Pumps are mainly used to transport liquids such as water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. They can also transport liquid-gas mixtures and liquids containing suspended solids.

[0003] Among them, a pump body casting with announcement number CN207830145U includes a pump body, which includes an inlet, an outlet, and an impeller cavity. The pump body has a first surface, a second surface, and a side wall. The inlet is located on the first surface, the mounting port is located on the second surface, and the outlet is located on the side wall. The centerline of the inlet is perpendicular to the centerline of the outlet. The inner cavity at the inlet end of the pump body is connected to the impeller cavity in a horizontal direction from the inlet. The centerline of the impeller cavity is the same straight line as the centerline of the inlet. The inner cavity at the outlet end of the pump body is connected to the impeller cavity in a direction perpendicular to the inlet. The centerline of the impeller cavity is perpendicular to the centerline of the outlet. The inner cavity at the inlet end of the pump body is provided with a pressure reducing device, which is integrally formed with the cavity wall at the inlet end of the pump body.

[0004] However, existing pump body castings typically employ traditional static sealing structures, such as sealing rings and gaskets. As the pump operates, these seals gradually wear down under the influence of medium pressure and friction, leading to decreased sealing performance and a tendency for leakage. This can affect the normal operation of the pump and even cause safety accidents. Utility Model Content

[0005] In view of the problems existing in the above-mentioned pump body castings, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a pump body casting with a self-compensating sealing structure, which solves the problem that existing seals gradually wear down under the action of medium pressure and friction, resulting in decreased sealing performance, easy leakage, affecting the normal operation of the pump body, and even causing safety accidents.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A pump body casting with a self-compensating sealing structure includes a pump body casting body. An annular plate is fixedly sleeved on the upper outer surface of the pump body casting body. Two support rods are symmetrically fixedly connected to the upper surface of the annular plate. A cover plate is slidably sleeved on the walls of the two support rods. A sealing element is provided between the cover plate and the annular plate. A slot is provided at both ends of the sealing element. A spring-loaded mechanism is provided between the two corresponding slots. Two through holes are provided on the upper surface of the cover plate. A sliding groove is provided on one side of each of the two through holes. A fixing mechanism is provided inside each of the two sliding grooves. The two support rods are fixed by their respective fixing mechanisms. A fixing groove is provided on the upper surface of each of the two sliding grooves. An adjusting mechanism is provided inside the fixing groove. The two adjusting mechanisms are respectively matched with the corresponding fixing mechanisms.

[0009] Preferably, the rebound mechanism includes multiple insert blocks, two fixing blocks, two connecting rods, two stop blocks, and two first springs. Each insert block is inserted into the interior of a corresponding slot. The two fixing blocks are fixedly connected to one side of the corresponding insert block. The two connecting rods are fixedly connected to one side of the other two fixing blocks. A cavity is provided on one side of each of the two fixing blocks. One end of each connecting rod passes through one side of the corresponding fixing block and extends into the interior of the corresponding cavity. The two stop blocks are fixedly connected to the rod wall of the corresponding connecting rod. The two first springs are slidably sleeved on the rod wall of the corresponding connecting rod.

[0010] Preferably, the fixing mechanism includes two first trapezoidal blocks and two second springs. The two first trapezoidal blocks are slidably disposed inside the corresponding slide grooves, and the two second springs are fixedly connected between the corresponding first trapezoidal blocks and the inner wall of the slide grooves.

[0011] Preferably, the adjustment mechanism includes two lead screws, two second trapezoidal blocks, and two knobs. The two second trapezoidal blocks are slidably disposed inside the corresponding fixing slots. The upper surface of the cover plate has two placement slots. An internal threaded hole is provided between the two placement slots and the corresponding fixing slots. The two lead screws are rotatably connected to the upper surface of the corresponding second trapezoidal blocks. The two knobs are fixedly connected to the upper wall of the corresponding lead screws.

[0012] Preferably, each of the two support rods has multiple slots on one side, and each slot is matched with a corresponding first trapezoidal block.

[0013] Preferably, the upper surfaces of the two first trapezoidal blocks are provided with trapezoidal grooves, and the two trapezoidal grooves are respectively matched with the corresponding second trapezoidal blocks.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] 1. This utility model, through the design of the first spring and the insert block of the rebound mechanism, when the seal becomes thin due to friction and wear, the spring releases elastic potential energy to push the insert block to slide into the slot, automatically compensating for the thickness loss of the seal. This design keeps the seal in a compressed state at all times, eliminating the need for frequent manual replacement of the seal and significantly reducing maintenance costs.

[0016] 2. In this utility model, the first trapezoidal block of the fixing mechanism is embedded into the slot of the support rod under the push of the second spring to form a rigid lock; when the seal wears and the cover plate moves down, the first trapezoidal block automatically slides into the next slot to maintain the clamping force. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of part A;

[0020] Figure 3 For the present utility model Figure 1 Enlarged schematic diagram of part B.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Pump body casting, 2. Annular plate, 3. Support rod, 4. Cover plate, 5. Seal, 6. Insert block, 7. Fixing block, 8. Connecting rod, 9. Stop block, 10. First spring, 11. First trapezoidal block, 12. Second spring, 13. Lead screw, 14. Second trapezoidal block, 15. Knob. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model discloses a pump body casting with a self-compensating sealing structure.

[0025] Reference Figure 1-3A pump body casting with a self-compensating sealing structure includes a pump body casting body 1. An annular plate 2 is fixedly sleeved on the outer surface of the upper part of the pump body casting body 1. Two support rods 3 are symmetrically fixedly connected to the upper surface of the annular plate 2. A cover plate 4 is slidably sleeved on the walls of the two support rods 3. A sealing element 5 is provided between the cover plate 4 and the annular plate 2. Each end of the sealing element 5 has a slot. A spring-loaded mechanism is provided between the corresponding two slots. The spring-loaded mechanism includes multiple insert blocks 6, two fixing blocks 7, two connecting rods 8, and two stops. Block 9 and two first springs 10 are provided. Each insert block 6 is inserted into the corresponding slot. Two fixing blocks 7 are fixedly connected to one side of the corresponding insert block 6. Two connecting rods 8 are fixedly connected to one side of the other two fixing blocks 7. A cavity is opened on one side of each fixing block 7. One end of each connecting rod 8 passes through one side of the corresponding fixing block 7 and extends into the cavity. Two stop blocks 9 are fixedly connected to the rod wall of the corresponding connecting rod 8. Two first springs 10 are slidably sleeved on the rod wall of the corresponding connecting rod 8.

[0026] By inserting the inserts 6 into the corresponding slots, the first spring 10 is in a pre-compressed state. The fixing block 7 and the connecting rod 8 apply initial pressure to the seal to ensure the initial sealing effect. When the seal becomes thin due to friction and wear, the first spring 10 releases its elastic potential energy, pushing the connecting rod 8 to slide the inserts 6 into the slots to compensate for the thickness loss of the seal.

[0027] In order for cover plate 4 to be fixed, such as Figure 1-2 As shown, the upper surface of the cover plate 4 has two through holes, and each of the two through holes has a groove on one side. Each of the two grooves has a fixing mechanism inside. The two support rods 3 are fixed by the corresponding fixing mechanisms. The fixing mechanisms include two first trapezoidal blocks 11 and two second springs 12. The two first trapezoidal blocks 11 are slidably disposed inside the corresponding grooves. The two second springs 12 are fixedly connected between the corresponding first trapezoidal blocks 11 and the inner wall of the groove. Each of the two support rods 3 has multiple slots on one side, and each slot matches the corresponding first trapezoidal block 11.

[0028] The first trapezoidal block 11 of the fixing mechanism is inserted into the slot of the support rod 3 under the thrust of the second spring 12 to form a rigid fixation. When the seal 5 becomes thinner, the cover plate 4 moves, and then the first trapezoidal block 11 is squeezed and moved. Next, the rebound force of the second spring 12 can move the first trapezoidal block 11 to the inside of the next slot, thereby re-forming a rigid fixation.

[0029] To facilitate the removal of cover plate 4, such as Figure 1-2As shown, the upper surfaces of both slides are provided with fixing grooves, and the interior of the fixing grooves is provided with adjustment mechanisms. The two adjustment mechanisms are respectively matched with the corresponding fixing mechanisms. The adjustment mechanisms include two lead screws 13, two second trapezoidal blocks 14 and two knobs 15. The two second trapezoidal blocks 14 are slidably disposed in the interior of the corresponding fixing grooves. The upper surface of the cover plate 4 is provided with two placement grooves, and the two placement grooves and the corresponding fixing grooves are provided with internal threaded holes. The two lead screws 13 are respectively rotatably connected to the upper surface of the corresponding second trapezoidal blocks 14. The two knobs 15 are respectively fixedly connected to the upper wall of the corresponding lead screw 13. The upper surfaces of the two first trapezoidal blocks 11 are provided with trapezoidal grooves, and the two trapezoidal grooves are respectively matched with the corresponding second trapezoidal blocks 14.

[0030] The surface of the knob 15 has a hexagonal groove, which makes it convenient for the operator to turn the knob 15. When the knob 15 is turned, the lead screw 13 is rotated, and the second trapezoidal block 14 moves down along the fixed groove. Its inclined surface pushes the first trapezoidal block 11 out of the corresponding slot, thus facilitating the disassembly of the cover plate 4.

[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A pump body casting with a self-compensating sealing structure, comprising a pump body casting body (1), characterized in that, An annular plate (2) is fixedly sleeved on the outer surface of the upper part of the pump body casting (1). Two support rods (3) are symmetrically fixedly connected to the upper surface of the annular plate (2). The walls of the two support rods (3) are slidably sleeved with a cover plate (4). A sealing element (5) is provided between the cover plate (4) and the annular plate (2). Both ends of the sealing element (5) are provided with slots. A spring mechanism is provided between the two corresponding slots. Two through holes are opened on the upper surface of the cover plate (4). A sliding groove is opened on one side of the two through holes. A fixing mechanism is provided inside the two sliding grooves. The two support rods (3) are fixed by the corresponding fixing mechanisms. A fixing groove is opened on the upper surface of the two sliding grooves. An adjustment mechanism is provided inside the fixing groove. The two adjustment mechanisms are matched with the corresponding fixing mechanisms.

2. The pump body casting with a self-compensating sealing structure according to claim 1, characterized in that, The rebound mechanism includes multiple insert blocks (6), two fixing blocks (7), two connecting rods (8), two stop blocks (9), and two first springs (10). Each insert block (6) is inserted into the interior of a corresponding slot. The two fixing blocks (7) are fixedly connected to one side of the corresponding insert block (6). The two connecting rods (8) are fixedly connected to one side of the other two fixing blocks (7). A cavity is opened on one side of each of the two fixing blocks (7). One end of each connecting rod (8) passes through one side of the corresponding fixing block (7) and extends into the interior of the corresponding cavity. The two stop blocks (9) are fixedly connected to the rod wall of the corresponding connecting rod (8). The two first springs (10) are slidably sleeved on the rod wall of the corresponding connecting rod (8).

3. The pump body casting with a self-compensating sealing structure according to claim 1, characterized in that, The fixing mechanism includes two first trapezoidal blocks (11) and two second springs (12). The two first trapezoidal blocks (11) are slidably disposed inside the corresponding slide grooves, and the two second springs (12) are fixedly connected between the corresponding first trapezoidal blocks (11) and the inner wall of the slide grooves.

4. The pump body casting with a self-compensating sealing structure according to claim 1, characterized in that, The adjustment mechanism includes two lead screws (13), two second trapezoidal blocks (14), and two knobs (15). The two second trapezoidal blocks (14) are slidably disposed inside the corresponding fixing slots. The upper surface of the cover plate (4) has two placement slots. The two placement slots and the corresponding fixing slots are provided with internal threaded holes. The two lead screws (13) are rotatably connected to the upper surface of the corresponding second trapezoidal blocks (14). The two knobs (15) are fixedly connected to the upper wall of the corresponding lead screw (13).

5. The pump body casting with a self-compensating sealing structure according to claim 1, characterized in that, Each of the two support rods (3) has multiple slots on one side, and each slot is matched with the corresponding first trapezoidal block (11).

6. The pump body casting with a self-compensating sealing structure according to claim 3, characterized in that, The upper surfaces of the two first trapezoidal blocks (11) are provided with trapezoidal grooves, and the two trapezoidal grooves are respectively matched with the corresponding second trapezoidal blocks (14).

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