Pump valve door auxiliary connecting device

Abstract

The application discloses a pump valve auxiliary connecting device and relates to the pump valve field. The application designs a loosening prevention structure, which comprises a connecting bolt and a connecting nut. A locking base is arranged on the connecting bolt, and a fastening part and a nut loosening prevention part are arranged between the locking base and the connecting nut. While the connecting nut is screwed, the relative position of the locking connecting nut and the connecting bolt is physically limited by using the anti-rotation pin, so that the loosening caused by the relative rotation of the connecting nut and the connecting bolt is prevented. Specifically, when the connecting nut rotates, the rotating disc can press the anti-rotation pin. After the connecting nut is screwed, the rotating disc is rotated, the anti-rotation pin passes through the pin fixing hole arranged on the rotating disc, the pin is popped out, the fastening surface of the connecting nut is contacted, and the rotation of the connecting nut is limited. The purpose of preventing the loosening of the connecting nut is achieved.

Description

Technical Field

[0001] This invention relates to the field of pumps and valves, and more specifically to an auxiliary connection device for pumps and valves. Background Technology

[0002] Pumps and valves are widely used, especially in liquid transportation, where they are crucial components of large-scale transport systems. They are prevalent in petroleum, chemical, machinery, electronics, defense, and aerospace industries, playing a vital role in national economic development. The reason pumps and valves are often linked is their application; where there are pumps, there are usually valves, and vice versa. Both are used for liquid transport. Valves are also used for gases, and vacuum pumps are also related to gases. Pumps, valves, and piping assemblies are mostly connected using flanges and bolts.

[0003] Installing pumps and valves directly on water pipes requires manual labor to lift the pipes and connect them, which is already quite cumbersome. However, after installation, the pumps and valves vibrate during use, causing loosening of the connections, especially when water flows at high speeds within the pipes. This can lead to leaks at the connections, potentially causing accidents. When there are many valves and valves, locating leaking connections is difficult, and resetting the bolts takes considerable time, increasing both workload and resource consumption. Therefore, an auxiliary connection device for pumps and valves is needed to prevent loosening and stripping of the connections between the pumps / valves and water pipes, ensuring the stability of the pump / valve installation.

[0004] For example, Chinese patent CN 213117091 U discloses an auxiliary connection device for pump valves. This auxiliary connection and fastening device generates various resistances through the support plate, fixing block, adsorption block and hard spring in the stabilizing component. After tightening and positioning, the threaded connection surfaces between the bolt and nut are tightly abutted, which solves the problem of loosening of the connection position caused by vibration during the use of pump valves, thereby avoiding easy stripping of the bolt at the connection position, and also making the force-bearing area and force of each component surface the same.

[0005] However, the aforementioned patents still have the following drawbacks:

[0006] (1) The principle of repulsion between like magnetic poles of a magnet is used to reduce the pressure on the spring and thus prevent excessive deformation of the spring. However, in actual use, the magnet is prone to adsorption with other metals in the device, so it is not possible to fix the magnet in the intended position accurately, which will result in the magnet and spring not achieving the desired effect.

[0007] (2) The pump valve is installed in connection with the water pipe. The flowing water in the water pipe will inevitably cause the magnet to rust, which will seriously lead to the failure of the magnetic force. Therefore, the stability of the magnetic force of the magnet cannot be guaranteed, and the service life of the magnet cannot be guaranteed. It is not suitable for long-term use.

[0008] Therefore, we urgently need to design an auxiliary connection device for pumps and valves, based on actual usage needs and mechanical principles; striving to be labor-saving and convenient to use, reducing the labor intensity of workers and improving their work efficiency, while also achieving the effect of being easy to use, durable, and not requiring frequent replacement. Summary of the Invention

[0009] In order to solve the problems of easy stripping of bolts at the connection position during the installation of pumps and valves in the prior art, and leakage at the connection position caused by vibration of pumps and valves during use, the present invention discloses an auxiliary connection device for pumps and valves.

[0010] Technical concept of the invention:

[0011] (1) Press the wedge-shaped clamping block downward with the pressure plate. The wedge-shaped clamping block moves obliquely downward along the track groove of the locking base, so that the arc surface of the wedge-shaped clamping block contacts the connecting bolt and generates compression. As the connecting nut is further tightened, the wedge-shaped clamping block and the connecting bolt are more deeply embedded together, so that the locking base and the connecting bolt are fastened.

[0012] (2) When the connecting nut rotates, the rotating disk can press the anti-rotation pin. After the connecting nut is tightened, the rotating disk is rotated so that the anti-rotation pin passes through the pin fixing hole opened on the rotating disk, causing the pin to pop out and contact the fastening surface of the connecting nut, thus restricting the rotation of the connecting nut. This achieves the purpose of preventing the connecting nut from loosening.

[0013] To achieve the above objectives, the technical solution adopted by the present invention to solve its technical problem is as follows:

[0014] A pump valve auxiliary connection device includes a connecting bolt and a connecting nut. The connecting bolt is also provided with a locking base. Between the locking base and the connecting nut, there is a fastening part to enhance the clamping effect of the connecting nut and a nut anti-loosening part to restrict the rotation of the connecting nut.

[0015] Furthermore, the fastening part includes a wedge-shaped clamping block and a pressure plate. The wedge-shaped clamping block engages with a track groove on the locking chassis, and the pressure plate is located at the top of the locking chassis.

[0016] Furthermore, the nut anti-loosening part includes an anti-rotation pin and a rotating disk. The anti-rotation pin is disposed in a pin mounting hole opened on the locking base, and its top end is pressed by the rotating disk.

[0017] Furthermore, the front end of the pressure plate is provided with a first stepped ring, and the top end of the first stepped ring is provided with a second stepped ring. The top end of the first stepped ring is in close contact with the rotating disk, and the top end of the second stepped ring is in close contact with the connecting nut.

[0018] Furthermore, the wedge-shaped clamping block has an "L"-shaped structure, including an upper platform and a lower platform, with a notch between the upper platform and the lower platform.

[0019] Furthermore, the bottom surface of the lower platform is sloping, and the inner surface is an arc.

[0020] Furthermore, a number of rectangular grooves are equally spaced on the arc surface.

[0021] Furthermore, the rotating disk has several pin fixing holes at equal angles, and the rotating disk has several rotation auxiliary grooves at equal angles at its edge.

[0022] Furthermore, the anti-rotation pin includes a cylindrical pin and a base, the base being fixed to the lower end of the cylindrical pin, and a pin spring being provided at the lower end of the base.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] (1) The wedge-shaped clamping block is matched with the track groove opened on the locking base. When the connecting nut is gradually tightened, the wedge-shaped clamping block moves towards the center of the connecting bolt. The threads on the connecting bolt are tightly fitted with the rectangular groove on the wedge-shaped clamping block, increasing the friction force, so that the locking base and the connecting bolt are tightened, achieving the effect of long-term fixation and preventing stripping.

[0025] (2) During the tightening of the connecting nut, the pin fixing hole on the rotating disk avoids the anti-rotation pin, achieving the effect of pressing the anti-rotation pin. After the connecting nut is tightened, the rotating disk is slightly rotated, causing the anti-rotation pin to pass through the pin fixing hole on the rotating disk, causing the anti-rotation pin to pop out and contact the fastening surface of the connecting nut, thus restricting the rotation of the connecting nut. This achieves the purpose of preventing the connecting nut from loosening. Furthermore, the entire device is made of metal, using the anti-rotation pin to physically limit the connecting nut, without using a magnet, thus avoiding the attraction effect of magnets on metal, which could affect the stability of the device.

[0026] (3) During the tightening of the connecting nut, the wedge-shaped clamping block clamps the connecting bolt, thereby enabling the locking base and the connecting bolt to achieve a reliable fastening effect. The pin fixing hole, together with the anti-rotation pin, physically limits the nut, so that the relative clamping force generated when the connecting nuts at both ends of the connecting bolt are tightened can reliably clamp the two flanges, and ensure that the connecting nut will not loosen and cause the clamping force to decrease. Attached Figure Description

[0027] The invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This is a structural diagram of the installation of a pump valve auxiliary connection device with a pump valve and a water pipe according to the present invention;

[0029] Figure 2 This is an exploded view of a pump valve auxiliary connection device according to the present invention;

[0030] Figure 3 This is a schematic diagram of a single-sided structure in a pump valve auxiliary connection device of the present invention;

[0031] Figure 4 yes Figure 3 A schematic diagram of the structure when the connecting nut rotates;

[0032] Figure 5 yes Figure 4 A schematic diagram of the structure when the connecting nut is tightened;

[0033] Figure 6 yes Figure 4 A sectional view;

[0034] Figure 7 yes Figure 5 Enlarged view of the locking chassis, wedge-shaped clamping block, and anti-rotation pin assembly;

[0035] Figure 8 yes Figure 5 Installation and assembly diagram of the locking chassis, pressure plate, and rotating plate;

[0036] Figure 9 yes Figure 2 Exploded view of the locking chassis, pressure plate spring, pressure plate, rotating plate, and connecting bolts;

[0037] Figure 10 yes Figure 5 Diagram showing the positional relationship between the wedge-shaped clamping block and the anti-rotation pin;

[0038] Figure 11 This is a schematic diagram of the structure of the locking base and pressure plate spring cooperation in a pump valve auxiliary connection device of the present invention;

[0039] Figure 12 yes Figure 7 Enlarged view of the wedge-shaped clamping block;

[0040] Figure 13 yes Figure 5 Enlarged view of the intermediate pressure plate;

[0041] Figure 14 yes Figure 8 Structural diagram of the central anti-rotation column pin.

[0042] In the diagram: 1. Water pipe; 2. Flange; 201. Reserved fixing hole; 3. Pump valve; 4. Rotary disc; 401. Rotation auxiliary groove; 402. Pin fixing hole; 5. Connecting nut; 6. Pressure plate; 601. Round hole; 602. First step ring; 603. Second step ring; 7. Pressure plate spring; 8. Wedge-shaped clamping block; 801. Rectangular groove; 802. Lower platform; 803. Upper platform; 9. Anti-rotation pin; 901. Pin spring; 902. Cylindrical pin; 903. Base; 10. Locking base; 1001. Track groove; 1002. Pin mounting hole; 1003. Fixing platform; 11. Connecting bolt. Detailed Implementation

[0043] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0046] Example 1

[0047] refer to Figure 1 Two flanges 2 are installed at the connection between water pipe 1 and pump valve 3. The two flanges 2 are securely connected using a pump valve auxiliary connection device. (Reference) Figures 2 to 14 This invention discloses an auxiliary connection device for a pump valve, including a connecting bolt 11 and a connecting nut 5. The connecting bolt 11 passes through two flanges 2. It should be noted that all components on the connecting bolt 11 are symmetrically arranged with respect to the two flanges 2. A locking base 10 is provided at the point where the connecting bolt 11 is close to the flange 2, and a connecting nut 5 is provided at the top of the connecting bolt, away from the flange 2. Between the locking base 10 and the connecting nut 5, there is a fastening part to enhance the clamping effect of the connecting nut 5 and a nut anti-loosening part to restrict the rotation of the connecting nut 5.

[0048] The locking base 10 is circular, and a stepped fixing platform 1003 is provided radially on the inner ring of its upper side. The fixing platform 1003 is used to fix the pressure plate spring 7. In use, the pressure plate spring 7 is engaged in the fixing platform, and three track grooves 1001 are provided at equal angles around the fixing platform 1003.

[0049] The fastening part includes a wedge-shaped clamping block 8 and a pressure plate 6. Each locking base 10 requires three wedge-shaped clamping blocks 8, which slide and connect with the track groove 1001. The wedge-shaped clamping block 8 and the track groove 1001 are designed to cooperate with each other. Specifically, the wedge-shaped clamping block 8 is L-shaped, including an upper platform 803 and a lower platform 802. A notch is provided between the upper platform 803 and the lower platform 802, and the bottom surface of the lower platform 802 is designed as a downward-sloping slope. The track groove 1001, which cooperates with the wedge-shaped clamping block 8, is also designed with a downward-sloping bottom surface. The notch ensures that the upper platform 803 does not obstruct the installation of the pressure plate spring 7, providing sufficient installation space for the pressure plate spring 7. The contact surface between the wedge-shaped clamping block 8 and the connecting bolt 11 is designed as an arc surface, and several rectangular grooves 801 are opened on the arc surface. The rectangular grooves 801 can be squeezed against the threads on the connecting bolt 11. The purpose is to increase the friction between the rectangular grooves 801 and the connecting bolt 11, so that the entire pump valve auxiliary connection device does not become loose, thus preventing water leakage.

[0050] During use, the wedge-shaped clamping block 8 is subjected to axial pressure along the length of the connecting bolt 11. Since the bottom surfaces of the lower platform 802 and the track groove 1001 are both designed as downward slopes, the lower platform 802 can slide towards the center of the connecting bolt 11 when subjected to axial pressure, converting the axial pressure along the length of the connecting bolt 11 into radial pressure along the outer surface of the connecting bolt 11 to the center, thereby making the wedge-shaped clamping block 8 fit tightly against the connecting bolt 11 and enhancing stability.

[0051] In this embodiment, each wedge-shaped clamping block 8 has five rectangular grooves 801, and each locking base 10 has three track grooves 1001, with adjacent track grooves 1001 spaced 120° apart. Furthermore, the locking base 10 also has pin mounting holes 1002 at equal angles. It should be noted that the pin mounting holes 1002 are not through holes; the locking base 10 has a thickness of 8mm, and the depth of the two pin mounting holes 1002 is 7mm. In this embodiment, each locking base 10 has three pin mounting holes 1002, with adjacent pin mounting holes 1002 spaced 120° apart.

[0052] The pressure plate 6 is located at the top of the locking base 10 and is in close contact with the pressure plate spring 7. The pressure plate spring 7 not only plays a role in damping vibration and preventing loosening due to vibration, but also, after the device is installed, the pressure plate spring 7 is in a compressed state. Since the connecting nut 5 is completely restricted, the elastic force of the pressure plate spring 7 can only be released in the direction of the flange 2. Since the connecting nuts 5 are symmetrically arranged, the elastic force can be used to press the two pressure plate springs 7 together.

[0053] As the connecting nut 5 tightens, the pressure plate 6 presses down on the wedge-shaped clamping block 8, gradually increasing the pressure on the wedge-shaped clamping block 8. Under this pressure, the bottom surface of the wedge-shaped clamping block 8 moves diagonally downward along the locking track groove 1001, causing the rectangular groove 801 on the arc surface of the clamping block to contact and compress with the thread on the connecting bolt 11. As the nut tightens further, the rectangular groove 801 on the wedge-shaped clamping block 8 fits tightly against the connecting bolt 11, ensuring a reliable fastening effect between the locking base plate 10 and the connecting bolt 11.

[0054] The anti-loosening part of the nut includes an anti-rotation pin 9 and a rotating disk 4. The anti-rotation pin 9 includes a cylindrical pin 902 and a base 903. The base 903 is fixed to the lower end of the cylindrical pin 902. Both the base 903 and the cylindrical pin 902 are cylindrical structures, and the radius of the base 903 is larger than that of the cylindrical pin 902. The anti-rotation pin 9 is set in the pin mounting hole 1002 on the locking base 10. A pin spring 901 is also provided at the bottom of the anti-rotation pin 9. The pin spring 901 can be fixedly connected to the base 903 or set separately without affecting the fixing effect. The pin spring 901 abuts against the bottom of the pin mounting hole 1002. The anti-rotation pin 9 passes through the circular holes 601 opened on the pressure plate 6. The number of circular holes 601 is also set to 3. Before the connecting nut 5 is tightened to the end, the top of the anti-rotation pin 9 is tightly fitted with the bottom of the rotating disk 4.

[0055] To prevent the anti-rotation pin 9 from loosening or slipping, it should be noted that the circular hole 601 on the pressure plate 6 is used to fix the anti-rotation pin 9. Therefore, the radius of the circular hole 601 is slightly larger than that of the cylindrical pin 902 but smaller than that of the base 903. In use, the pressure plate 6 presses down on the base 903, and the cylindrical pin 902 passes through the circular hole 601.

[0056] To prevent the pressure plate 6 from becoming unable to rotate when the connecting nut 5 presses against it, a further optimization of the present invention is as follows: The pressure plate 6 has a ring-shaped structure. The side of the pressure plate 6 near the locking base 10 is flat, while the side near the connecting nut 5 is provided with a first stepped ring 602. A second stepped ring 603 is provided at the top of the first stepped ring 602. Both the first stepped ring 602 and the second stepped ring 603 are frustoconical, and the outer diameter of the second stepped ring 603 is slightly smaller than that of the first stepped ring 602. The first stepped ring 602 is fixedly connected to the pressure plate 6, and the top of the second stepped ring 603 is tightly fitted to the bottom surface of the connecting nut 5. Specifically, the height of the first stepped ring 602 is 1.8 mm, the height of the second stepped ring 603 is 2.2 mm, the inner diameters of the first stepped ring 602 and the second stepped ring 603 are the same, both being 16 mm, the outer diameter of the first stepped ring 602 is 22 mm, and the outer diameter of the second stepped ring 603 is 19 mm. When in use, the flat surface of the pressure plate 6 is in close contact with the top surface of the base 903 of the anti-rotation pin 9.

[0057] The top surface of the first step ring 602 fits against the bottom surface of the rotating disk 4, and the inner diameter of the rotating disk 4 is slightly larger than the outer diameter of the second step ring 603. Thus, the inner ring of the rotating disk 4 can achieve a transition fit with the outer side wall of the second step ring 603, allowing the rotating disk 4 to rotate slightly. The rotating disk 4 has three pin fixing holes 402 at equal angles, and three rotation auxiliary grooves 401 at equal angles at the edge of the rotating disk 4. The rotation auxiliary grooves 401 are semi-circular grooves, and can be clamped with professional tools during use, making the rotation of the rotating disk 4 more convenient.

[0058] When the connecting nut 5 is not tightened to the correct position, the bottom surface of the rotating disk 4 presses against the top surface of the cylindrical pin 902, preventing the anti-rotation pin 9 from popping out of the pin fixing hole 402, thus not affecting the rotation of the connecting nut 5.

[0059] When the connecting nut 5 is tightened to the correct position, rotate it slightly to adjust the tightness. Then, use a specialized tool to hold the rotating auxiliary groove 401 in place. This allows the rotating disk 4 to rotate, causing the cylindrical pins 902 of the anti-rotation pins 9 to pass through the pin fixing holes 402 on the rotating disk 4. This causes the three cylindrical pins 902 to pop out and contact the fastening surfaces of the connecting nut 5, thus restricting the rotation of the connecting nut 5. The anti-rotation pins 9 are in tangential contact with the three fastening surfaces of the connecting nut 5, which restricts the rotation of the connecting nut 5 and achieves the purpose of preventing the connecting nut 5 from loosening.

[0060] Since the locking base 10, rotating plate 4, pressure plate 6, connecting nut 5, and all the components installed therein are symmetrically arranged with flange 2 as the axis of symmetry and are fixed by a connecting bolt 11, the operation steps for installing the components on the left and right sides of flange 2 are the same until the two connecting nuts 5 and connecting bolt 11 are stably fixed. Finally, pump valve auxiliary connection devices are installed in all the reserved fixing holes 201 on flange 2 to stably fix the two flanges 2 and prevent water leakage.

[0061] Example 2 Application Case

[0062] This embodiment describes the application of the present invention in the field of pumps and valves. Two flanges 2 at the connection point between the water pipe 1 and the pump valve 3 are fitted together, ensuring all pre-drilled fixing holes 201 on the flanges 2 are coaxial. A connecting bolt 11 is passed through one of the pre-drilled fixing holes 201. With the water pipe 1 and pump valve 3 securely connected, two locking base plates 10 are passed through the connecting bolt 11, with the bottom surfaces of both locking base plates 10 fitting against the flanges 2. Then, all the wedge-shaped clamping blocks 8 are placed into their corresponding track grooves 1001, and the pin springs 901 are also installed in their corresponding pin mounting holes 1002. Finally, the anti-rotation pins 9 are installed in their corresponding pin mounting holes 1002. During installation, ensure that the bottom surface of the base 903 is in close contact with the pin spring 901. Next, install the pressure plate spring 7 in the fixed platform 1003, then cover the pressure plate spring 7 with the flat surface of the pressure plate 6, and stabilize the wedge-shaped clamping block 8 at the same time. When installing the rotating disk 4, first align the top surface of the first step ring 602 with the bottom surface of the rotating disk 4 so that the top surface of the first step ring 602 is engaged with the rotating disk 4, and the bottom surface of the rotating disk 4 abuts against the top surface of the anti-rotation pin 9. After the connecting nuts 5 at both ends are tightened, slightly adjust the tightness of the connecting nuts 5 and rotate the rotating disk 4 so that the cylindrical pin 902 passes through the pin fixing hole 402 on the rotating disk 4, the anti-rotation pin 9 pops out and is tangent to the fastening surface of the connecting nut 5. Finally, use the same operation in the reserved fixing holes 201 on the flange 2 to complete the connection and installation of the pump valve 3 and the water pipe 1.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pump valve auxiliary connection device, comprising a connecting bolt (11) and a connecting nut (5), characterized in that, The connecting bolt (11) is also provided with a locking base (10), and a fastening part that enhances the clamping effect of the connecting nut (5) and a nut anti-loosening part that restricts the rotation of the connecting nut (5) are provided between the locking base (10) and the connecting nut (5); The fastening part includes a wedge-shaped clamping block (8) and a pressure plate (6). The wedge-shaped clamping block (8) is engaged with a track groove (1001) opened on the locking base (10). The pressure plate (6) is located at the top of the locking base (10). The nut anti-loosening part includes an anti-rotation pin (9) and a rotating disk (4). The anti-rotation pin (9) is set in a pin mounting hole (1002) opened on the locking base (10), and the top end is pressed by the rotating disk (4). During the tightening of the connecting nut, the pin fixing hole on the rotating disk avoids the anti-rotation pin. After the connecting nut is tightened, the rotating disk is slightly rotated so that the anti-rotation pin passes through the pin fixing hole on the rotating disk, causing the anti-rotation pin to pop out and contact the fastening surface of the connecting nut, thus restricting the rotation of the connecting nut.

2. The pump valve auxiliary connection device according to claim 1, characterized in that, The front end of the pressure plate (6) is provided with a first step ring (602), and the top end of the first step ring (602) is provided with a second step ring (603). The top end of the first step ring (602) is tightly fitted with the rotating disk (4), and the top end of the second step ring (603) is tightly fitted with the connecting nut (5).

3. The pump valve auxiliary connection device according to claim 2, characterized in that, The wedge-shaped clamping block (8) has an "L"-shaped structure, including an upper platform (803) and a lower platform (802), with a notch between the upper platform (803) and the lower platform (802).

4. The pump valve auxiliary connection device according to claim 3, characterized in that, The bottom surface of the lower platform (802) is sloping, and the inner surface is a rounded surface.

5. The pump valve auxiliary connection device according to claim 4, characterized in that, Several rectangular grooves (801) are equally spaced on the arc surface.

6. The pump valve auxiliary connection device according to claim 2, characterized in that, The rotating disk (4) has several pin fixing holes (402) at equal angles, and the rotating disk (4) has several rotating auxiliary grooves (401) at equal angles at the edge.

7. The pump valve auxiliary connection device according to claim 1, characterized in that, The anti-rotation pin (9) includes a cylindrical pin (902) and a base (903). The base (903) is fixed to the lower end of the cylindrical pin (902), and a pin spring (901) is provided at the lower end of the base (903).

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