Pump core spring

Abstract

The utility model discloses a pump core spring, relates to spring technical field, including spring main part and V-shaped support plate, a plurality of V-shaped support plate are provided from top to bottom in proper order on the both sides of spring main part, the both ends of a plurality of V-shaped support plate are fixedly connected with arc-shaped clamping plate, the arc-shaped clamping plate with the one side of corresponding V-shaped support plate sleeve, and the spring main part is equipped with the spring main part and the V-shaped support plate. A V-shaped elastic metal sheet is arranged on the side, close to the spring body, of the V-shaped supporting plate in an abutting mode, connecting mechanisms are arranged at the two ends of the V-shaped elastic metal sheet, and the two ends of the V-shaped elastic metal sheet are connected with the V-shaped supporting plate in a limiting mode through the connecting mechanisms. The spring can be limited and supported, stable linear deformation of the spring can be kept, deflection of the spring during deformation is effectively prevented, and the service life of the spring is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to spring technical field, concretely relates to a pump core spring. BACKGROUND

[0002] The pump core spring is the key elastic element in various pump bodies, and its stability directly influences the working efficiency and service life of the pump. The existing pump core spring is prone to radial deviation or skew during reciprocating motion, which leads to uneven force on the spring, accelerates fatigue fracture, and may cause friction noise between the pump core and the pump body, thereby reducing the overall performance of the pump. For example, in centrifugal pumps, metering pumps and other equipment, the spring skew problem is particularly prominent. SUMMARY

[0003] In view of the above problems existing in the prior art pump core spring, the utility model is provided.

[0004] Therefore, the utility model aims at providing a pump core spring, which solves the problems in the background art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A pump core spring, comprising a spring body and a V-shaped support plate, a plurality of V-shaped support plates are sequentially arranged on both sides of the spring body from top to bottom, both ends of the plurality of V-shaped support plates are fixedly connected with arc clamping plates, the arc clamping plate is sleeved with one side of the corresponding V-shaped support plate, one side of the V-shaped support plate close to the spring body is provided with a V-shaped elastic metal sheet, both ends of the V-shaped elastic metal sheet are provided with a connecting mechanism, and both ends of the V-shaped elastic metal sheet are limitingly connected with the V-shaped support plate through the connecting mechanism.

[0007] Preferably, the connecting mechanism comprises a connecting rod and a pin, both end surfaces of the V-shaped support plate are provided with through holes, two connecting rods are fixedly arranged at both ends of one side of the V-shaped elastic metal sheet close to the V-shaped support plate, one end of the connecting rod away from the V-shaped elastic metal sheet penetrates through the corresponding through hole, a hole is formed in the rod wall of the connecting rod, and the pin is inserted into the corresponding hole.

[0008] Preferably, both ends of the pin are inwardly contracted, and both ends are provided with bending parts.

[0009] Preferably, a ring groove is formed in the surface of the spring body and at the position corresponding to the arc clamping plate, and both sides of the arc clamping plate abut against the inner wall of the ring groove.

[0010] Preferably, the two arc clamping plates are elastic steel plates.

[0011] Preferably, a corrosion-resistant coating is coated on the surface of the spring body.

[0012] In the above technical solutions, the utility model provides technical effect and advantage:

[0013] 1、 the utility model discloses a multilayer V type support plate is set up in spring main body both sides, and the arc clamping plate of both ends is clamped in the annular groove of spring main body, forms the rigid limit point along the axial distribution, effectively limits the radial displacement when spring deformation, avoids skewing.

[0014] 2、 the utility model discloses that V type elastic sheet is connected with V type support plate limit connection through connecting rod and snap pin, utilizes the lateral constraint force of elastic deformation, further guides spring along linear compression or lengthening, and the bending part of snap pin both ends prevents the fall of connecting mechanism, ensures the limit reliability. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiment of the present application or prior art, the following will briefly introduce the drawings needed in the embodiment, and obviously, the drawings in the following description are only some embodiments in the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings.

[0016] Figure 1 A structural diagram of a pump core spring is provided for the utility model.

[0017] Figure 2 For Figure 1 The structure of the partial A part in the middle is enlarged and schematically shown.

[0018] Figure 3 For Figure 2 The perspective view of the U-shaped snap pin.

[0019] Explanation of reference signs:

[0020] 1, spring main body, 2, arc clamping plate, 3, V type support plate, 4, V type elastic sheet, 5, through hole, 6, connecting rod, 7, annular groove, 8, snap pin, 9, bending part. DETAILED DESCRIPTION

[0021] In order to make the skilled in the art better understand the technical scheme of the utility model, the following will be further introduced in detail to the utility model in conjunction with the drawings.

[0022] The utility model embodiment discloses a pump core spring.

[0023] Refer to Figures 1-3The utility model provides a pump core spring, including spring main body 1 and V type support board 3, a plurality of V type support board 3 are sequentially arranged from top to bottom in the both sides of spring main body 1, the surface of spring main body 1 is coated with anticorrosive coating, improves the anticorrosive performance of spring main body 1, the both ends of a plurality of V type support board 3 are fixedly connected with arc clamping plate 2, two arc clamping plates 2 are elastic steel sheet, have longer service life, arc clamping plate 2 is in sleeve connection with the side of corresponding V type support board 3, the side of V type support board 3 close to spring main body 1 is provided with V type elastic metal sheet 4 in abutment, and the both ends of V type elastic metal sheet 4 are provided with connecting mechanism, and the both ends of V type elastic metal sheet 4 are connected with V type support board 3 through connecting mechanism.

[0024] Referring to Figures 1-3 , the connecting mechanism includes a connecting rod 6 and a pin 8, both ends of the V-shaped support plate 3 are provided with a through hole 5, and both ends of the connecting rod 6 are fixedly arranged on the both ends of the V-shaped elastic metal sheet 4 close to the V-shaped support plate 3. One end of the connecting rod 6 away from the V-shaped elastic metal sheet 4 penetrates through the corresponding through hole 5, and the rod wall of the connecting rod 6 is provided with a insertion hole. The pin 8 is inserted into the corresponding insertion hole, and both ends of the pin 8 are inwardly contracted and provided with a bent portion 9. The pin 8 can effectively prevent the connecting rod 6 from moving out of the insertion hole.

[0025] The surface of the spring main body 1 and the corresponding position of the arc clamping plate 2 are provided with an annular groove 7, and both sides of the arc clamping plate 2 abut against the inner wall of the annular groove 7, which can limit the movement of the arc clamping plate 2.

[0026] In use, the spring main body 1 is installed in the pump core, and the plurality of V-shaped support plates 3 are clamped in the annular groove 7 on the surface of the spring main body 1 through the arc clamping plate 2, forming a limiting support point distributed along the spring axis. The V-shaped elastic metal sheet 4 penetrates through the through hole 5 of the V-shaped support plate 3 through the connecting rod 6, and is fixed by inserting the pin 8 into the insertion hole of the connecting rod 6, so that the V-shaped elastic metal sheet 4 is tightly attached to the side surface of the spring main body 1.

[0027] When the spring main body 1 is compressed by axial pressure, the V-shaped support plate 3 limits the radial displacement of the spring through the arc clamping plate 2, and the V-shaped elastic metal sheet 4 further restricts the spring main body 1 along the linear direction by using the lateral force generated by elastic deformation, avoiding skew. The bent portion 9 at both ends of the pin 8 prevents it from falling off, ensuring the stability of the connecting mechanism. The arc clamping plate 2 made of elastic steel plate can slightly deform with the spring, maintain the abutting state with the annular groove 7, and the anticorrosive coating prolongs the service life of the spring main body 1.

[0028] Through the above structure, the V-shaped support plate and the V-shaped elastic metal sheet form a multi-layer limiting support system, effectively inhibiting the radial deviation of the spring during deformation, uniformly dispersing stress, and improving the stability and durability of the spring.

[0029] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A pump core spring, comprising a spring body (1) and a V-shaped support plate (3), characterized in that: Multiple V-shaped support plates (3) are arranged sequentially from top to bottom on both sides of the spring body (1). Both ends of the multiple V-shaped support plates (3) are fixedly connected to arc-shaped clamping plates (2). The arc-shaped clamping plates (2) are sleeved on one side of the corresponding V-shaped support plate (3). A V-shaped elastic metal sheet (4) is abutted on the side of the V-shaped support plate (3) close to the spring body (1). Both ends of the V-shaped elastic metal sheet (4) are provided with connecting mechanisms. The two ends of the V-shaped elastic metal sheet (4) are limited and connected to the V-shaped support plate (3) through the connecting mechanisms.

2. The pump core spring according to claim 1, characterized in that: The connecting mechanism includes a connecting rod (6) and a locking pin (8). Both ends of the V-shaped support plate (3) are provided with through holes (5). The two connecting rods (6) are fixedly set at both ends of the V-shaped elastic metal sheet (4) near the V-shaped support plate (3). The end of the connecting rod (6) away from the V-shaped elastic metal sheet (4) passes through the corresponding through hole (5). The rod wall of the connecting rod (6) is provided with an insertion hole. The locking pin (8) is inserted into the interior of the corresponding insertion hole.

3. The pump core spring according to claim 2, characterized in that: The two ends of the locking pin (8) are tapered inward, and both ends are provided with bent portions (9).

4. The pump core spring according to claim 1, characterized in that: An annular groove (7) is provided on the surface of the spring body (1) at a position corresponding to the arc-shaped plate (2), and both sides of the arc-shaped plate (2) abut against the inner wall of the annular groove (7).

5. The pump core spring according to claim 1, characterized in that: The two arc-shaped plates (2) are elastic steel plates.

6. The pump core spring according to claim 1, characterized in that: The surface of the spring body (1) is coated with an anti-corrosion coating.

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