A pump head structure of a deep-well pump

Abstract

The utility model relates to deep well pump design technical field discloses a pump head structure of deep well pump, including pump head body, the lateral side of the upper side of pump head body is equipped with the accommodation ring groove, both sides in the accommodation ring groove are evenly provided with the lifting hook, one side of lifting hook is provided with the connecting seat for the rotary connection of lifting hook upper end, the upper end of connecting seat is provided with the locating block, the upper side inner wall of accommodation ring groove is equipped with the locating groove for the embedding of locating block, the upper end surface of pump head body is equipped with the through -hole that communicates with the locating groove, the screw hole is opened in locating block, the connecting bolt that is connected in screw hole is provided in through -hole, the upper end surface department of pump head body and located the position department of through -hole are equipped with the countersunk groove for the bolt head embedding of connecting bolt, when needing to replace the lifting hook, the connecting bolt in through -hole is screwed out, then the locating block of connecting seat can be taken out from the locating groove, thereby connecting seat and lifting hook are disassembled from the accommodation ring groove.

Description

Technical Field

[0001] This utility model belongs to the field of deep well pump design technology, and specifically relates to a pump head structure for a deep well pump. Background Technology

[0002] Deep well pumps are well pumping equipment that integrates the electric motor and pump body into one design. They are widely used in agricultural irrigation, industrial water supply and drainage and other fields.

[0003] Currently, a Chinese patent with publication number CN309398751S and publication date of December 16, 2024, has published a design patent for a pump head (deep well pump).

[0004] The pump head is equipped with connecting lugs on both sides, which are used to secure the lifting rope, thus facilitating the underwater hoisting and positioning of the deep well pump. However, under prolonged use and the corrosive effects of the underwater environment, the connecting lugs are prone to damage, which is detrimental to the safe hoisting of the lifting rope. Utility Model Content

[0005] The purpose of this invention is to provide a pump head structure for a deep well pump that allows for easy replacement of the hook.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a pump head structure for a deep well pump, including a pump head body, a receiving annular groove is provided on the upper circumference of the pump head body, hooks are provided on both sides of the receiving annular groove, a connecting seat is provided on one side of the hook for the upper end of the hook to be rotatably connected, a positioning block is provided at the upper end of the connecting seat, a positioning groove for the positioning block to be embedded is provided on the upper inner wall of the receiving annular groove, a through hole communicating with the positioning groove is provided on the upper end face of the pump head body, a threaded hole is provided in the positioning block, a connecting bolt threaded into the threaded hole is provided in the through hole, and a countersunk groove for the bolt head of the connecting bolt to be embedded is provided on the upper end face of the pump head body at the position of the through hole.

[0007] A further feature of this invention is that: the connecting seat has a shaft hole, the upper end of the hook has a connecting shaft passing through the shaft hole, the end of the connecting shaft away from the hook has a connecting plate, and a reset torsion spring is sleeved on the connecting shaft, with one end connected to the connecting plate and the other end connected to the connecting seat; when the reset torsion spring is in its natural state, the hook rotates into the receiving ring groove.

[0008] A further feature of this invention is that a constraint groove is provided on the lower side of the hook for embedding the tail end of the power cord of the deep well pump.

[0009] A further feature of this invention is that a constraint ring groove is provided on the lower periphery of the pump head body for the insertion of the power cord of the deep well pump.

[0010] A further feature of this invention is that the inner wall of the constraint ring groove is provided with a plurality of abutting blocks for pressing against the outer wall of the power line.

[0011] A further feature of this invention is that the upper end of the pump head body has a corresponding constriction for the external connector, and the inner wall of the pump head body has a guide arc surface that bends toward the constriction.

[0012] A further feature of this invention is that a conical anti-backflow cone is provided inside the lower end of the pump head body, and connecting arms are provided on both sides of the anti-backflow cone. In summary, this utility model has the following beneficial effects: 1. When the hook is needed, the upper end of the hook is rotated to connect to the connecting seat. Therefore, after the hook is rotated upward from the connecting seat, it will be located outside the storage ring groove, and then the hook can be easily tied with the lifting rope. When the hook is not in use, the hook can be rotated downward and retracted into the storage ring groove, which helps to protect the hook and avoid the hook being bumped when moving the deep well pump. When the hook needs to be replaced, unscrew the connecting bolt in the through hole, and then the positioning block of the connecting seat can be dislodged from the positioning groove, thereby removing the connecting seat from the receiving ring groove. Then, the new hook and connecting seat can be embedded in the receiving ring groove. When the hook swings, the connecting seat can move up and down in the receiving ring groove, thereby embedding the positioning block in the positioning groove. Then, the connecting bolt is threaded into the threaded hole after passing through the through hole, and finally, the hook can be easily replaced. 2. One end of the return torsion spring is connected to the connecting plate and the other end is connected to the connecting seat. When the hook is no longer in use, after the hook is released, under the elastic restoring force of the return torsion spring, the hook can swing downward and quickly retract into the storage ring groove. 3. The motor of the deep well pump needs to be connected to an external power source using a power cord. After the deep well pump is used, the long power cord needs to be wound around the outer wall of the deep well pump. When the hook is swung, the tail end of the power cord is inserted into the constraint groove on the lower side of the hook. The tail end of the power cord can be constrained by the hook, which helps to stably wind and store the power cord on the outer wall of the deep well pump. 4. By utilizing the constraint ring groove opened on the lower side of the pump head body, the beginning of the power cord of the deep well pump can be embedded in the constraint ring groove, thereby constraining the beginning of the power cord and reducing the possibility of the power cord being disconnected from the motor due to excessive pulling. 5. The constraint ring groove uses multiple clamping blocks to press against the outer wall of the power cord, which helps the power cord to be stably embedded in the constraint ring groove; 6. The pump head body uses the constricted position to correspond to the external connector, and the guide arc surface guides the water flow, so that the water flow can quickly enter the external connector. 7. The anti-backflow cone blocks the backflow of water into the deep well pump, thus protecting the impeller inside the pump and preventing high-pressure backflow from damaging it. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the connector in this utility model. Figure 4 This is a structural cross-sectional view of the present invention; Figure 5 This is a schematic diagram of the structure of the pump head body combined with the deep well pump and power line.

[0015] In the diagram, 1. Pump head body; 11. Receiving ring groove; 12. Positioning groove; 13. Through hole; 14. Connecting bolt; 15. Countersunk groove; 16. Constraint ring groove; 161. Clamping block; 17. Narrowing opening; 18. Guide arc surface; 2. Hook; 21. Connecting shaft; 211. Connecting disc; 212. Return torsion spring; 22. Constraint groove; 3. Connecting seat; 31. Positioning block; 311. Threaded hole; 32. Shaft hole; 4. Anti-backlash cone; 41. Connecting arm. Detailed Implementation

[0016] The technical solutions in the embodiments will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] A pump head structure for a deep well pump, referring to Figure 1 , Figure 2The pump head structure of this deep well pump includes a pump head body 1, wherein a receiving ring groove 11 is provided on the upper circumference of the pump head body 1, and hooks 2 are provided on both sides of the receiving ring groove 11. A connecting seat 3 is provided on one side of the hook 2 for the upper end of the hook 2 to be rotatably connected, and a shaft hole 32 is provided on the connecting seat 3. At the same time, a connecting shaft 21 passing through the shaft hole 32 is welded to the upper end of the hook 2, and a connecting plate 211 is welded to the end of the connecting shaft 21 away from the hook 2. A return torsion spring 212 is sleeved on the connecting shaft 21, one end of which is fixed to the connecting plate 211 and the other end of which is fixed to the connecting seat 3. When the return torsion spring 212 is in the natural state, the hook 2 rotates into the receiving ring groove 11.

[0018] Reference Figure 1 , Figure 2 , Figure 3 The upper end of the connecting seat 3 is integrally provided with a positioning block 31, and the positioning block 31 has a rectangular cross section. The upper inner wall of the receiving ring groove 11 is provided with a positioning groove 12 for the positioning block 31 to be embedded. The upper end face of the pump head body 1 is provided with a through hole 13 communicating with the positioning groove 12. At the same time, a threaded hole 311 is provided in the positioning block 31, and a connecting bolt 14 is provided in the through hole 13 and threadedly connected to the threaded hole 311. The upper end face of the pump head body 1 and the position of the through hole 13 are also provided with a countersunk groove 15 for the bolt head of the connecting bolt 14 to be embedded.

[0019] Reference Figure 1 , Figure 2 , Figure 4 , Figure 5 The lower side of the hook 2 is provided with a constraint groove 22 for the tail end of the power cord of the deep well pump to be embedded. The lower side of the pump head body 1 is provided with a constraint ring groove 16 for the head end of the power cord of the deep well pump to be embedded. Multiple abutment blocks 161 for abutting against the outer wall of the power cord are integrally provided on the inner wall of the constraint ring groove 16. At the same time, a constriction 17 corresponding to the external connector is formed in the upper end of the pump head body 1. A guide arc surface 18 bent towards the constriction 17 is formed on the inner wall of the periphery of the pump head body 1. A conical anti-backlash cone 4 is provided in the lower end of the pump head body 1. Connecting arms 41 welded to the inner wall of the pump body are integrally provided on both sides of the anti-backlash cone 4.

[0020] Principle: When hook 2 is needed, the upper end of hook 2 is rotatably connected to the connecting seat 3. Therefore, after hook 2 rotates upward from the connecting seat 3, it can be located outside the receiving ring groove 11, and then hook 2 can be conveniently tied with the lifting rope. When hook 2 is not in use, hook 2 can rotate downward under the drive of the return torsion spring 212 and retract into the receiving ring groove 11, which helps to protect hook 2 and avoid the situation of hook 2 being bumped when moving the deep well pump. When the hook 2 needs to be replaced, the connecting bolt 14 in the through hole 13 is unscrewed, and then the positioning block 31 of the connecting seat 3 can be dislodged from the positioning groove 12, thereby removing the connecting seat 3 from the receiving ring groove 11; then the new hook 2 and connecting seat 3 can be embedded in the receiving ring groove 11. When the hook 2 swings, the connecting seat 3 can move up and down in the receiving ring groove 11, so that the positioning block 31 is embedded in the positioning groove 12. Then, the connecting bolt 14 passes through the through hole 13 and is threaded into the threaded hole 311, which makes it easy to replace the hook 2. Meanwhile, the motor of the deep well pump needs to be connected to an external power source via a power cord. After the deep well pump is used, the long power cord needs to be wound around the outer wall of the deep well pump. After swinging the hook 2, the tail end of the power cord can be inserted into the constraint groove 22 on the lower side of the hook 2, thereby constraining the tail end of the power cord through the hook 2. At the same time, the first end of the power cord can be inserted into the constraint ring groove 16 on the lower circumference of the pump head body 1, thereby constraining the first end of the power cord. Finally, it is conducive to the stable winding and storage of the power cord on the outer wall of the deep well pump.

Claims

1. A pump head structure for a deep well pump, comprising a pump head body (1), characterized in that: The pump head body (1) has a storage ring groove (11) on its upper periphery. Hooks (2) are provided on both sides of the storage ring groove (11). A connecting seat (3) is provided on one side of the hook (2) for the upper end of the hook (2) to rotate and connect. A positioning block (31) is provided at the upper end of the connecting seat (3). A positioning groove (12) for the positioning block (31) to be embedded is provided on the upper inner wall of the storage ring groove (11). A through hole (13) communicating with the positioning groove (12) is provided on the upper end surface of the pump head body (1). A threaded hole (311) is provided in the positioning block (31). A connecting bolt (14) threadedly connected to the threaded hole (311) is provided in the through hole (13). A countersunk groove (15) for the bolt head of the connecting bolt (14) to be embedded is provided on the upper end surface of the pump head body (1) at the position of the through hole (13).

2. The pump head structure of a deep well pump according to claim 1, characterized in that: The connecting seat (3) has a shaft hole (32), and the upper end of the hook (2) is provided with a connecting shaft (21) passing through the shaft hole (32). The end of the connecting shaft (21) away from the hook (2) is provided with a connecting plate (211). A reset torsion spring (212) is sleeved on the connecting shaft (21), with one end connected to the connecting plate (211) and the other end connected to the connecting seat (3). When the reset torsion spring (212) is in its natural state, the hook (2) rotates into the receiving ring groove (11).

3. The pump head structure of a deep well pump according to claim 1, characterized in that: The hook (2) has a constraint groove (22) on its lower side for the tail end of the power line of the deep well pump to be embedded.

4. The pump head structure of a deep well pump according to claim 1, characterized in that: The pump head body (1) has a constraint ring groove (16) on the lower side of the periphery for the power line of the deep well pump to be embedded.

5. The pump head structure of a deep well pump according to claim 4, characterized in that: The inner wall of the constraint ring groove (16) is provided with a plurality of abutting blocks (161) for abutting against the outer wall of the power line.

6. The pump head structure of a deep well pump according to claim 1, characterized in that: The upper end of the pump head body (1) is formed with a corresponding external connector constriction (17), and a guide arc surface (18) bent toward the constriction (17) is formed on the inner wall of the peripheral side of the pump head body (1).

7. The pump head structure of a deep well pump according to claim 6, characterized in that: A conical anti-backlash cone (4) is provided inside the lower end of the pump head body (1), and connecting arms (41) are provided on both sides of the anti-backlash cone (4).

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