Shock absorber for water pump

Abstract

The shock absorber for the water pump comprises a limiting steel plate, a bottom plate and a spring set arranged between the limiting steel plate and the bottom plate, the spring set at least comprises N shock absorption springs which are different in elastic coefficient and distributed in a rectangular shape, and N is an even number and is larger than or equal to 4; the supporting plate is arranged above the limiting steel plate, the metal gaskets are arranged between the spring set and the limiting steel plate, a plurality of jacking screw rods are welded and fixed to the lower end face of the supporting plate, and the jacking screw rods and the damping springs are arranged in a one-to-one mode; the jacking screw rod sequentially and movably penetrates through the limiting steel plate and the metal gasket and then is inserted into the damping spring, and the part, located between the limiting steel plate and the supporting plate, of the jacking screw rod is sleeved with a jacking nut. According to the shock absorber, the spring is not excessively compressed and the flexible pipeline soft joint is not excessively stretched or compressed when the water pump is started, stopped and under different pressure working conditions during operation, so that the use safety of the water pump and the pipeline is improved, and the service life of the water pump and the pipeline is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing equipment, in particular to a shock absorber for a water pump. Background Art

[0002] In order to reduce the transmission of vibration from the water pump to the building during operation, a vibration absorber is often installed at the bottom of the water pump to reduce the transmission of vibration through compressed metal springs and rubber layers.

[0003] A flexible joint is usually installed on the outlet pipe of the water pump for vibration isolation. When the flexible joint is installed vertically on the vertical riser, during the operation of the water pump, the pipes at both ends of the flexible joint will generate a large reaction force under the action of water pressure, and the reaction force will act on the water pump, causing the shock absorber spring under the water pump to be compressed. If the stiffness of the shock absorber spring is insufficient, the shock absorber spring will be over-compressed or even compacted to lose its shock-absorbing effect; at the same time, since the shock absorber spring will be over-compressed and the length of the flexible joint will be stretched, the flexible joint may be over-stretched and damaged. When the water pump is shut down, the reaction force of the pipes at both ends of the flexible joint disappears, and the water pump rises under the action of the spring force, squeezing the flexible joint, which is at risk of damage.

[0004] In addition, in some cases, the outlet pressure of the water pump will be set to operate alternately under multiple pressure conditions. For example, when the terminal water-using equipment of the water pump is in standby mode at night, the water pump only needs to provide an outlet pressure of 0.3MPa; when the terminal water-using equipment of the water pump is in production mode during the day, the water pump needs to provide an outlet pressure of 0.5MPa. Different outlet pressures bring different pipeline water pressure reaction forces, and also make the spring shock absorber at the bottom of the water pump subject to different compression forces. Utility Model Content

[0005] In order to prevent the spring of the shock absorber from being over-compressed and to avoid damage to the flexible joint during operation of the water pump at different pressures, the utility model provides a shock absorber for the water pump.

[0006] In order to achieve the above-mentioned utility model object, the technical solution adopted by the utility model is: a shock absorber for a water pump, comprising a limit steel plate and a bottom plate arranged relatively up and down, and a spring group arranged between the limit steel plate and the bottom plate, wherein the spring group comprises at least N shock absorbing springs distributed in a rectangular shape, and the elastic coefficients of the N shock absorbing springs are different, N is an even number, and N≥4;

[0007] The shock absorber for the water pump also includes a support plate arranged above the limiting steel plate and detachably connected to the water pump, and a plurality of metal gaskets arranged between the spring group and the limiting steel plate, a plurality of jacking screws are welded and fixed to the lower end surface of the support plate, the plurality of jacking screws and the plurality of shock absorbing springs are arranged one to one, the limiting steel plate is provided with a plurality of first through holes, the metal gasket has a second through hole, the jacking screw moves through the first through hole and the second through hole in turn and is inserted into the shock absorbing spring, the portion of the jacking screw located between the limiting steel plate and the support plate is sleeved with a jacking nut, the outer diameter of the jacking nut is smaller than the diameter of the first through hole, and the outer diameter of the jacking nut is larger than the diameter of the second through hole.

[0008] Furthermore, it also includes a plurality of spring supports arranged below the metal gasket, the spring supports are in the shape of an inverted bowl, a third through hole is opened in the center of the spring support, the diameter of the third through hole is larger than the outer diameter of the support screw, and the top of the shock-absorbing spring is arranged in the spring support.

[0009] Furthermore, it also includes a plurality of spring bases fixed on the bottom plate, wherein the spring base is bowl-shaped, and the bottom of the shock-absorbing spring is arranged in the spring base.

[0010] Furthermore, it also includes two first limit supports and second limit supports respectively arranged on the left and right sides of the spring group, the lower end of the first limit support 11 and the lower end of the second limit support are fixed to the base plate by welding, the upper end of the first limit support and the upper end of the second limit support are connected to the limit steel plate by long bolts and nuts, and the height of the first limit support and the second limit support is less than the length of the shock-absorbing spring when it is not compressed.

[0011] Furthermore, the first limit support and the second limit support have the same structure and are symmetrically arranged with the center line of the bottom plate as the symmetry axis;

[0012] The first limiting support includes a top connecting plate and a bottom connecting plate which are arranged opposite to each other up and down, and a limiting plate which connects the corresponding edges of the top connecting plate and the bottom connecting plate. The top connecting plate is provided with a fourth through hole for the long bolt to pass through, and the bottom connecting plate is welded to the bottom plate.

[0013] Furthermore, the bottom plate is provided with a plurality of first connection holes, and the bottom plate is fixed to the flange or the water pipe by bolts passing through the first connection holes;

[0014] The support plate is provided with a plurality of second connection holes, and the support plate is connected to the water pump by bolts passing through the second connection holes.

[0015] Furthermore, it also includes a lower rubber shock-absorbing pad, which is fixed on the lower surface of the bottom plate.

[0016] Furthermore, it also includes an upper rubber shock-absorbing pad, which is fixed on the upper surface of the support plate.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The shock absorber of the utility model is detachably connected to the bottom of the water pump by bolts, so that the spring of the shock absorber will not be over-compressed under different pressure conditions when the water pump is started and stopped and during operation, and the flexible pipe joint above the water pump will not be over-stretched or compressed, thereby improving the safety and service life of the water pump and the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, some of the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a front view of a shock absorber for a water pump according to the utility model;

[0021] Figure 2 It is a side view of a front view of a shock absorber for a water pump of the utility model;

[0022] Figure 3 It is a top view of the limiting steel plate of the utility model;

[0023] Figure 4 for Figure 1 Sectional view along AA direction. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0028] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] Please refer to Figures 1 to 4A shock absorber for a water pump comprises a limit steel plate 2 and a bottom plate 1 arranged relatively to each other up and down, a spring group 3 arranged between the limit steel plate 2 and the bottom plate 1, the spring group 3 comprises at least N shock absorbing springs distributed in a rectangular shape, the elastic coefficients of the N shock absorbing springs are different, N is an even number, and N≥4; the shock absorber for the water pump also comprises a support plate 4 arranged above the limit steel plate 2 and detachably connected to the water pump, and a plurality of metal gaskets 7 arranged between the spring group 3 and the limit steel plate 2, the lower portion of the support plate 4 A plurality of supporting screws 5 are welded and fixed on the end faces, and the plurality of supporting screws 5 are arranged one-to-one with the plurality of shock-absorbing springs. The limiting steel plate 2 is provided with a plurality of first through holes 20, and the metal gasket 7 has a second through hole. The supporting screws 5 are moved through the first through holes 20 and the second through holes in turn and are inserted into the shock-absorbing springs. A supporting nut 6 is sleeved on the portion of the supporting screw 5 located between the limiting steel plate 2 and the supporting plate 4. The outer diameter of the supporting nut 6 is smaller than the diameter of the first through hole 20, and the outer diameter of the supporting nut 6 is larger than the diameter of the second through hole.

[0031] Since the outer diameter of the supporting nut 6 is larger than the diameter of the first through hole 20 and smaller than the diameter of the second through hole, the supporting nut 6 can move vertically in the first through hole 20 and be restricted above the metal gasket 7 .

[0032] When the support plate 4 sinks due to different downward pressures, the supporting nut 6 contacts the metal gasket 7 in stages, and transmits the downward pressure of the support plate 4 to multiple shock-absorbing springs in succession, thereby obtaining different shock-absorbing spring stiffness combinations under different pressures to avoid excessive compression of the shock-absorbing spring and excessive stretching or compression of the flexible pipe joint above the water pump, thereby improving the safety and service life of the water pump and the pipe.

[0033] Preferably, the shock absorber further comprises a limiting nut 17, which is arranged above the supporting nut 6, and the thickness of the limiting nut 17 is smaller than the thickness of the supporting nut 6, and is used to lock the supporting nut 6 to prevent the supporting nut 6 from loosening.

[0034] As a preferred embodiment, the shock absorber is provided with 6 shock absorbing springs with different elastic coefficients between the limit steel plate 2 and the bottom plate 1. The 6 shock absorbing springs are arranged in two rows, 3 in a row, and symmetrically arranged on the bottom plate 1, which is conducive to ensuring the force balance of the limit steel plate 2. The elastic coefficient of the shock absorbing spring can be selected according to the outlet pressure of the water pump when it is working.

[0035] Furthermore, it also includes a plurality of spring supports 8 disposed under the metal gasket 7. The spring supports 8 are in the shape of an inverted bowl, and the top of the shock absorbing spring is disposed in the spring supports 8, so as to prevent the shock absorbing spring from horizontal displacement when being compressed. A third through hole is opened in the center of the spring supports 8, and the diameter of the third through hole is larger than the outer diameter of the support screw 5, so that the support screw 5 can move through the spring supports 8 and extend into the shock absorbing spring 3.

[0036] Furthermore, it also includes a plurality of spring bases 9 fixed on the bottom plate 1, the spring bases 9 are bowl-shaped, and the bottom of the shock-absorbing spring is arranged in the spring bases 9, so as to avoid horizontal displacement of the shock-absorbing spring when being compressed.

[0037] Furthermore, it also includes two first limit supports 11 and second limit supports 12 which are respectively arranged on the left and right sides of the spring group 3. The lower end of the first limit support 11 and the lower end of the second limit support 12 are fixed to the base plate 1 by welding, and the upper end of the first limit support 11 and the upper end of the second limit support 12 are connected to the limit steel plate 2 by long bolts 13 and nuts 14. The height of the first limit support 11 and the second limit support 12 is less than the length of the shock-absorbing spring when it is not compressed.

[0038] Furthermore, the first limiting support 11 and the second limiting support 12 have the same structure and are symmetrically arranged with the center line of the bottom plate 1 as the symmetry axis. The first limiting support 11 includes a top connecting plate and a bottom connecting plate arranged opposite to each other up and down, and a limiting plate connecting the corresponding edges of the top connecting plate and the bottom connecting plate, the top connecting plate is provided with a fourth through hole for the long bolt 13 to pass through, and the bottom connecting plate is welded to the bottom plate 1.

[0039] Furthermore, the bottom plate 1 is provided with a plurality of first connection holes 100, and the bottom plate 1 is fixed to the flange or the water pipe by bolts passing through the first connection holes 100;

[0040] The support plate 4 is provided with a plurality of second connection holes 40 , and the support plate 4 is connected to the water pump by bolts passing through the second connection holes 40 .

[0041] Furthermore, a lower rubber shock-absorbing pad 15 is included, and the lower rubber shock-absorbing pad 15 is fixed to the lower surface of the bottom plate 1 to isolate vibration transmission.

[0042] Furthermore, an upper rubber shock-absorbing pad 16 is included, and the upper rubber shock-absorbing pad 16 is fixed to the upper surface of the support plate 4 to further isolate vibration transmission.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A shock absorber for a water pump, comprising a limit steel plate (2) and a bottom plate (1) arranged opposite to each other in the upper and lower directions, and a spring group (3) arranged between the limit steel plate (2) and the bottom plate (1), characterized in that: The spring group (3) comprises at least N shock-absorbing springs distributed in a rectangular shape, the elastic coefficients of the N shock-absorbing springs are different, wherein N is an even number and N≥4; The shock absorber for the water pump also includes a support plate (4) arranged above the limiting steel plate (2) and detachably connected to the water pump, and a plurality of metal gaskets (7) arranged between the spring group (3) and the limiting steel plate (2); a plurality of supporting screws (5) are welded and fixed to the lower end surface of the support plate (4); the plurality of supporting screws (5) are arranged one-to-one with the plurality of shock absorbing springs; the limiting steel plate (2) is provided with a plurality of first through holes (20); the metal gasket (7) has a second through hole; the supporting screw (5) is inserted into the shock absorbing spring after passing through the first through hole (20) and the second through hole in sequence; a supporting nut (6) is sleeved on the portion of the supporting screw (5) between the limiting steel plate (2) and the support plate (4); the outer diameter of the supporting nut (6) is smaller than the diameter of the first through hole (20), and the outer diameter of the supporting nut (6) is larger than the diameter of the second through hole.

2. A shock absorber for a water pump as claimed in claim 1, characterized in that: It also includes a plurality of spring supports (8) arranged below the metal gasket (7), the spring supports (8) being in the shape of an inverted bowl, a third through hole being provided at the center of the spring supports (8), the diameter of the third through hole being larger than the outer diameter of the support screw (5), and the top of the damping spring being arranged in the spring supports (8).

3. A shock absorber for a water pump as claimed in claim 1, characterized in that: It also comprises a plurality of spring base supports (9) fixed on the bottom plate (1), wherein the spring base supports (9) are bowl-shaped, and the bottom of the shock absorbing spring is arranged in the spring base supports (9).

4. A shock absorber for a water pump as claimed in claim 1, characterized in that: It also includes two first limit supports (11) and second limit supports (12) respectively arranged on the left and right sides of the spring group (3), the lower end of the first limit support (11) and the lower end of the second limit support (12) are fixed to the base plate (1) by welding, the upper end of the first limit support (11) and the upper end of the second limit support (12) are connected to the limit steel plate (2) by long bolts (13) and nuts (14), and the height of the first limit support (11) and the second limit support (12) is less than the length of the shock-absorbing spring when it is not compressed.

5. A shock absorber for a water pump as claimed in claim 4, characterized in that: The first position-limiting support (11) and the second position-limiting support (12) have the same structure and are symmetrically arranged with the center line of the base plate (1) as the axis of symmetry; The first limiting support (11) comprises a top connecting plate and a bottom connecting plate which are arranged opposite to each other in an upper and lower direction, and a limiting plate which connects the corresponding edges of the top connecting plate and the bottom connecting plate, the top connecting plate being provided with a fourth through hole for the long bolt (13) to pass through, and the bottom connecting plate being welded to the base plate (1).

6. A shock absorber for a water pump as claimed in claim 1, characterized in that: The bottom plate (1) is provided with a plurality of first connection holes (100), and the bottom plate (1) is fixed to a flange or a water pipe by bolts passing through the first connection holes (100); The support plate (4) is provided with a plurality of second connection holes (40), and the support plate (4) is connected to the water pump by means of bolts passing through the second connection holes (40).

7. A shock absorber for a water pump as claimed in claim 1, characterized in that: It also comprises a lower rubber shock-absorbing pad (15), wherein the lower rubber shock-absorbing pad (15) is fixed on the lower surface of the bottom plate (1).

8. A shock absorber for a water pump as claimed in claim 1, characterized in that: It also comprises an upper rubber shock-absorbing pad (16), wherein the upper rubber shock-absorbing pad (16) is fixed on the upper surface of the support plate (4).

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