Hot water circulating pump set and steam boiler

Abstract

The utility model relates to the technical field of hot water circulating pumps, in particular to a hot water circulating pump set and a steam boiler, which comprise a hot water circulating pump set body, a joint is arranged on the surface of the hot water circulating pump set body, a pipeline is arranged at the other end of the joint, screw holes are arranged on the surfaces of the joint and the pipeline, and bolts are movably inserted into the screw holes. A nut is arranged on a rod body of the bolt in a threaded connection mode, and a fixed anti-loosening ring is fixed to the surface of the pipeline. The anti-loosening device has the advantages that the movable anti-loosening ring is arranged on the surface of the nut in a sleeving mode, so that the nut cannot rotate any more, similarly, a nut of the bolt inserted into the fixed anti-loosening ring cannot rotate any more, and therefore even if the thread friction force between the bolt and the nut is reduced under the temperature difference change, the nut cannot loosen, and the anti-loosening effect is good. Therefore, the pipeline and the connector are tightened all the time, and water pressurized by the hot water circulating pump set body is prevented from leaking from a seam between the connector and the pipeline.

Description

Technical Field

[0001] The utility model relates to the field of hot water circulation pumps, in particular to a hot water circulation pump group and a steam boiler. Background Art

[0002] A steam boiler is a device used to generate steam. It is widely used in industrial production, heating, power generation and many other fields. When a steam boiler is used for heating, it can be used with a hot water circulation pump set to achieve hot water circulation. A hot water circulation pump set usually refers to a group of pumps used to circulate hot water. These pumps can be individual pumps or a combination of multiple pumps. They work together to improve the efficiency and performance of the hot water system.

[0003] In the prior art, the connection between the hot water circulation pump group and the pipeline is usually that a joint with a flange seat is set on the surface of the pump body, and a flange seat is also set at the end of the pipeline. Corresponding screw holes are opened on the flange seats of the joint and the pipeline. Bolts are inserted into the screw holes, and then the nuts are tightened at the end of the bolts away from the nut. The tight installation of the pipeline and the joint is achieved through the extrusion of the nut and the nut. This installation method is simple to operate.

[0004] However, in the connection method between the hot water circulation pump group and the pipeline in the prior art, the tightening of the bolts and nuts depends on the friction between the threads of the nuts and the bolts. When the hot water circulation pump group is used in combination with the steam boiler for residential heating, in order to save energy, the temperature of the hot water output by the steam boiler is often dynamically adjusted according to the outdoor temperature. This makes the threads between the nuts and bolts work in a large temperature difference environment for a long time. The temperature change will cause the friction between the threads to decrease, thereby causing the nuts to loosen, and then cause the joint between the joint of the hot water circulation pump group and the pipeline to become larger, and the hot water pressurized by the hot water circulation pump group leaks from the joint. Utility Model Content

[0005] The purpose of the utility model is to provide a hot water circulation pump set and a steam boiler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot water circulation pump group, comprising: a hot water circulation pump group body, a joint is arranged on the surface of the hot water circulation pump group body, a pipe is arranged at the other end of the joint, screw holes are opened on the surface of the joint and the pipe, bolts are movably inserted in the screw holes, nuts are arranged on the rod body of the bolts through threaded connection, a fixed anti-loosening ring is fixed on the surface of the pipe, the nut of the bolt is movably inserted in the fixed anti-loosening ring, a movable anti-loosening ring mounting groove is opened on the surface of the joint, one end of the movable anti-loosening ring is movably inserted in the movable anti-loosening ring mounting groove, the other end of the movable anti-loosening ring extends out of the movable anti-loosening ring mounting groove, and the end of the movable anti-loosening ring extending out of the movable anti-loosening ring mounting groove is sleeved on the surface of the nut.

[0007] Preferably, the fixed anti-loosening ring is arranged at a position on the pipeline surface where the fixed anti-loosening ring is provided, and the inner ring of the fixed anti-loosening ring matches the shape of the nut of the bolt.

[0008] Preferably, the movable anti-loosening ring installation groove is opened at a position where a screw hole is opened on the surface of the joint, the groove body shape of the movable anti-loosening ring installation groove matches the movable anti-loosening ring installation groove, and the inner ring shape of the movable anti-loosening ring matches the nut.

[0009] Preferably, a spring is fixed to one end of the movable anti-loosening ring extending into the movable anti-loosening ring installation groove, and the other end of the spring is fixed to the inner wall of the groove body of the movable anti-loosening ring installation groove.

[0010] Preferably, a lever window is provided on the side of the joint, and the lever window is a rectangular groove structure. The lever window is connected to the movable anti-loosening ring mounting groove, and a lever is slidably connected in the lever window. One end of the lever extends into the movable anti-loosening ring mounting groove, and the end of the lever extending into the movable anti-loosening ring mounting groove is fixed on the surface of the movable anti-loosening ring, and the other end of the lever extends from an opening set by the lever window on the surface of the joint.

[0011] A steam boiler comprises the hot water circulation pump group.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the hot water circulation pump group and steam boiler proposed by the utility model, a movable anti-loosening ring is sleeved on the surface of the nut, so that the nut can no longer rotate. Similarly, the nut of the bolt inserted in the fixed anti-loosening ring can no longer rotate. Therefore, even if the thread friction between the bolt and the nut decreases due to temperature difference changes, the nut will not loosen, so that the pipeline and the joint are always tightened, avoiding the water pressurized by the hot water circulation pump group body from leaking from the joint between the joint and the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point B in the middle.

[0018] In the figure: hot water circulation pump unit body 1, joint 2, pipe 3, screw hole 4, bolt 5, fixed anti-loosening ring 6, nut 7, movable anti-loosening ring installation groove 8, movable anti-loosening ring 9, spring 10, lever window 11, lever 12. DETAILED DESCRIPTION

[0019] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] See also Figure 1-Figure 4 The utility model provides a technical solution: a hot water circulation pump group, comprising: a hot water circulation pump group body 1, a joint 2 is arranged on the surface of the hot water circulation pump group body 1, a pipe 3 is arranged at the other end of the joint 2, screw holes 4 are opened on the surfaces of the joint 2 and the pipe 3, a bolt 5 is movably inserted in the screw hole 4, a nut 7 is arranged on the rod body of the bolt 5 through a threaded connection, a fixed anti-loosening ring 6 is fixed on the surface of the pipe 3, the nut of the bolt 5 is movably inserted in the fixed anti-loosening ring 6, a movable anti-loosening ring installation groove 8 is opened on the surface of the joint 2, and a movable anti-loosening ring installation groove 8 is inserted in the movable anti-loosening ring installation groove 8. One end of the movable anti-loosening ring 9 is connected, and the other end of the movable anti-loosening ring 9 extends out from the movable anti-loosening ring mounting groove 8. The end of the movable anti-loosening ring 9 extending out of the movable anti-loosening ring mounting groove 8 is sleeved on the surface of the nut 7. The fixed anti-loosening ring 6 is arranged at a position where the fixed anti-loosening ring 6 is opened on the surface of the pipeline 3. The inner ring of the fixed anti-loosening ring 6 matches the shape of the nut of the bolt 5. The movable anti-loosening ring mounting groove 8 is opened at a position where the screw hole 4 is opened on the surface of the joint 2. The groove body shape of the movable anti-loosening ring mounting groove 8 matches the movable anti-loosening ring mounting groove 8, and the inner ring shape of the movable anti-loosening ring 9 matches the nut 7.

[0022] After the screw thread 5 is tightened, the nut 7 is tightened to prevent the nut 7 from being loosened and the nut 7 from being loosened again.

[0023] Embodiment 2

[0024] On the basis of Example 1, in order to realize the control of the position of the mobile anti-loosening ring 9, a spring 10 is fixed on one end of the mobile anti-loosening ring 9 extending into the mobile anti-loosening ring mounting groove 8, and the other end of the spring 10 is fixed on the inner wall of the groove body of the mobile anti-loosening ring mounting groove 8. A lever window 11 is opened on the side of the joint 2, and the lever window 11 is a rectangular groove structure. The lever window 11 is connected with the mobile anti-loosening ring mounting groove 8, and a lever 12 is slidably connected in the lever window 11. One end of the lever 12 extends into the mobile anti-loosening ring mounting groove 8, and the end of the lever 12 extending into the mobile anti-loosening ring mounting groove 8 is fixed on the surface of the mobile anti-loosening ring 9, and the other end of the lever 12 extends out from the opening set in the lever window 11 on the surface of the joint 2.

[0025] When the movable anti-loosening ring 9 needs to be completely retracted into the movable anti-loosening ring mounting groove 8, it is only necessary to push the lever 12 in the direction close to the pipe 3, and the lever 12 slides in the lever window 11, driving the movable anti-loosening ring 9 to move in the same direction, so that the movable anti-loosening ring 9 is completely retracted into the movable anti-loosening ring mounting groove 8; the movement of the movable anti-loosening ring 9 causes the spring 10 to be compressed, so when one end of the movable anti-loosening ring 9 needs to be extended out of the movable anti-loosening ring mounting groove 8 again, it is only necessary to release the lever 12, and the thrust generated by the spring 10 on the movable anti-loosening ring 9 under the action of its own elasticity will push one end of the movable anti-loosening ring 9 out of the movable anti-loosening ring mounting groove 8; at the same time, the lever 12 moves with the movable anti-loosening ring 9 until the lever 12 rests on the inner wall of the lever window 11, which can prevent the movable anti-loosening ring 9 from being completely ejected from the movable anti-loosening ring mounting groove 8.

[0026] In actual use, after the bolt 5 is inserted into the screw hole 4 opened on the surface of the joint 2 and the pipe 3, the nut of the bolt 5 is inserted into the fixed anti-loosening ring 6, the movable anti-loosening ring 9 is first completely retracted into the spring 10, and then the nut 7 is tightened on the bolt 5. After tightening, the nut 7 is fine-tuned so that the position of the nut 7 matches the inner ring of the movable anti-loosening ring 9, and then one end of the movable anti-loosening ring 9 is extended from the movable anti-loosening ring mounting groove 8, and the movable anti-loosening ring 9 is sleeved on the surface of the nut 7, so that the nut 7 can no longer rotate. Similarly, the nut of the bolt 5 inserted in the fixed anti-loosening ring 6 can no longer rotate. Therefore, even if the thread friction between the bolt 5 and the nut 7 decreases due to temperature difference changes, the nut 7 will not loosen, so that the pipe 3 and the joint 2 are always tightened, avoiding the water pressurized by the hot water circulation pump group body 1 from entering the joint. Leakage occurs at the joint between the head 2 and the pipe 3; when the movable anti-loosening ring 9 needs to be completely retracted into the movable anti-loosening ring mounting groove 8, it is only necessary to push the lever 12 in the direction close to the pipe 3, and the lever 12 slides in the lever window 11, driving the movable anti-loosening ring 9 to move in the same direction, so that the movable anti-loosening ring 9 is completely retracted into the movable anti-loosening ring mounting groove 8; the movement of the movable anti-loosening ring 9 causes the spring 10 to be compressed, so when one end of the movable anti-loosening ring 9 needs to be extended out of the movable anti-loosening ring mounting groove 8 again, it is only necessary to release the lever 12, and the thrust generated by the spring 10 on the movable anti-loosening ring 9 under the action of its own elasticity will push one end of the movable anti-loosening ring 9 out of the movable anti-loosening ring mounting groove 8; at the same time, the lever 12 moves with the movable anti-loosening ring 9 until the lever 12 rests on the inner wall of the lever window 11, which can prevent the movable anti-loosening ring 9 from being completely ejected from the movable anti-loosening ring mounting groove 8.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hot water circulation pump set, comprising: A hot water circulation pump group body (1) is provided with a joint (2) on the surface of the hot water circulation pump group body (1), and a pipe (3) is provided at the other end of the joint (2). Screw holes (4) are provided on the surfaces of the joint (2) and the pipe (3), and bolts (5) are movably inserted in the screw holes (4). A nut (7) is provided on the rod body of the bolt (5) through a threaded connection. The invention is characterized in that a fixed anti-loosening ring (6) is fixed on the surface of the pipe (3), and the nut of the bolt (5) is movably inserted in the fixed anti-loosening ring (6). A movable anti-loosening ring installation groove (8) is provided on the surface of the joint (2), and one end of a movable anti-loosening ring (9) is movably inserted in the movable anti-loosening ring installation groove (8), and the other end of the movable anti-loosening ring (9) extends out of the movable anti-loosening ring installation groove (8), and one end of the movable anti-loosening ring (9) extending out of the movable anti-loosening ring installation groove (8) is sleeved on the surface of the nut (7).

2. A hot water circulation pump set according to claim 1, characterized in that: The fixed anti-loosening ring (6) is arranged at a position on the surface of the pipeline (3) where the fixed anti-loosening ring (6) is provided, and the inner ring of the fixed anti-loosening ring (6) matches the shape of the nut of the bolt (5).

3. A hot water circulation pump set according to claim 1, characterized in that: The movable anti-loosening ring installation groove (8) is provided at a position where a screw hole (4) is provided on the surface of the joint (2); the groove body shape of the movable anti-loosening ring installation groove (8) matches the movable anti-loosening ring installation groove (8); and the inner ring shape of the movable anti-loosening ring (9) matches the nut (7).

4. A hot water circulation pump set according to claim 1, characterized in that: A spring (10) is fixed to one end of the movable anti-loosening ring (9) extending into the movable anti-loosening ring installation groove (8), and the other end of the spring (10) is fixed to the inner wall of the movable anti-loosening ring installation groove (8).

5. A hot water circulation pump set according to claim 1, characterized in that: A lever window (11) is provided on the side of the joint (2). The lever window (11) is in a rectangular slot structure. The lever window (11) is connected to the movable anti-loosening ring installation groove (8). A lever (12) is slidably connected in the lever window (11). One end of the lever (12) extends into the movable anti-loosening ring installation groove (8). The end of the lever (12) extending into the movable anti-loosening ring installation groove (8) is fixed on the surface of the movable anti-loosening ring (9). The other end of the lever (12) extends from an opening provided in the lever window (11) on the surface of the joint (2).

6. A steam boiler, characterized in that: It comprises the hot water circulation pump set as described in any one of claims 1 to 5.

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