Fuel pump air tightness detection tool

Abstract

The utility model relates to the technical field of air tightness detection tools, and discloses a fuel pump air tightness detection tool comprising a pedestal, the upper surface of the pedestal is provided with a rectangular block, the upper surface of the rectangular block is provided with two grooves, the two grooves are symmetrically arranged, the upper surface of the rectangular block is provided with a placing seat, and the placing seat is provided with a clamping groove. Two elastic clamping plates are symmetrically arranged on the lower surface of the placement seat, each elastic clamping plate comprises a clamping part and a connecting part, the placement seat is arranged at one end of each clamping part, the connecting part is arranged at the other end of each clamping part, and the outer surface of each clamping part abuts against the inner surface of the corresponding groove. By pushing the connecting part, the abutting relation between the outer surface of the clamping part and the inner surface of the groove is canceled, so that the placing seat can be conveniently taken down from the rectangular block, placing seats with different sizes can be replaced, and fuel pumps with different sizes can be accurately positioned.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection tooling, in particular to an air tightness detection tooling for a fuel pump. Background Art

[0002] Air tightness testing, also known as leakage testing, is an indicator of the tightness of a product. The air tightness of a seal is one of the important factors affecting product quality. In the production process of a fuel pump, air tightness testing is one of the essential steps.

[0003] The utility model patent application document with the publication number "CN209311016U" discloses an airtightness detection tool, which is mainly composed of a lower base plate, an upper base plate, a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a positioning circle, a fixing seat, a support column and a positioning core. The technical solution has a simple structure, low cost, high reliability, easy repair and maintenance, and improves the efficiency and revenue of the enterprise.

[0004] The airtightness testing tool disclosed in the above document has the following defects: the airtightness testing tool can only accurately position the product that matches the positioning core size after use. When the product size is smaller than the positioning core size, it cannot perform the sealing test well, and its practicality is poor.

[0005] It can be seen from this that the existing air tightness detection tooling is unable to accurately position products of different sizes, and it is necessary to improve the existing deficiencies and provide a fuel pump air tightness detection tooling. Utility Model Content

[0006] The utility model aims to provide a fuel pump air tightness detection tool to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] The utility model is a fuel pump air tightness detection tool, comprising a base, wherein a rectangular block is arranged on the upper surface of the base, a groove is opened on the upper surface of the rectangular block, the groove is fixed in two and symmetrically arranged, a placement seat is arranged on the upper surface of the rectangular block, an elastic clamping plate is arranged on the lower surface of the placement seat, the elastic clamping plate is fixed in two and symmetrically arranged, the elastic clamping plate comprises a clamping part and a connecting part, one end of the clamping part is provided with a placement seat, the other end of the clamping part is provided with a connecting part, and the outer surface of the clamping part abuts against the inner surface of the groove.

[0009] Furthermore, a plurality of threaded holes are formed on the lower surface of the base, one end of each threaded hole passes through the base and extends to the inside of the rectangular block, and a bolt is connected to the inner thread of each threaded hole.

[0010] Furthermore, a first support plate and a second support plate are installed on the upper surface of the base, a connecting plate is installed on the upper surface of the first support plate, a first cylinder is installed on the upper surface of the connecting plate, an output end of the first cylinder passes through the connecting plate and extends downward, and a shock absorbing structure is installed on the output end of the first cylinder.

[0011] Furthermore, a second cylinder is installed at one end of the second support plate, an output end of the second cylinder passes through the second support plate, an air nozzle is installed at the output end of the second support plate, and a connecting air pipe is installed on the outer surface of the air nozzle.

[0012] Further, the shock absorbing structure includes a first column, a spring, a slider, and a second column. The upper surface of the first column is installed on the lower surface of the first cylinder output end. A sliding cavity is opened inside the first column. A through hole is opened on the lower surface of the first column. The through hole is connected with the sliding cavity. A spring is arranged inside the sliding cavity. One end of the spring is installed on the inner top of the sliding cavity. A slider is installed on the other end of the spring. The slider is slidably connected to the inside of the sliding cavity. A second column is provided at the end of the slider away from the spring. The second column is located inside the through hole.

[0013] Furthermore, an abutment block is installed at one end of the second column away from the sliding block.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model pushes the connecting portion so that the outer surface of the clamping portion and the inner surface of the groove cancel the abutment relationship, thereby facilitating the removal of the placement seat from the rectangular block and replacing the placement seat with a different size, so as to accurately position the fuel pumps of different sizes.

[0016] (2) The utility model provides a shock-absorbing structure, which can make the abutment block play a better buffering role during the downward pressing process, thereby reducing the pressure of the abutment block on the fuel pump.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the rectangular block and the placement seat of the utility model;

[0021] Figure 3 This is a cross-sectional view of the base, rectangular block and placement seat structure of the utility model;

[0022] Figure 4 This is a cross-sectional view of the shock-absorbing structure of the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. base; 2. rectangular block; 201. groove; 3. placement seat; 301. elastic clamping plate; 30101. clamping part; 30102. connecting part; 4. bolt; 5. first support plate; 6. second support plate; 7. connecting plate; 8. first cylinder; 9. shock absorbing structure; 901. first column; 90101. sliding cavity; 902. spring; 903. slider; 904. second column; 10. second cylinder; 11. air nozzle; 12. connecting air pipe; 13. abutment block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] See also Figure 1 - Figure 4 As shown, the utility model is a fuel pump air tightness detection tool, including a base 1, a rectangular block 2 is arranged on the upper surface of the base 1, a groove 201 is opened on the upper surface of the rectangular block 2, the groove 201 is fixed in two and symmetrically arranged, a placement seat 3 is arranged on the upper surface of the rectangular block 2, an elastic clamping plate 301 is arranged on the lower surface of the placement seat 3, the elastic clamping plate 301 is fixed in two and symmetrically arranged, the elastic clamping plate 301 includes a clamping portion 30101 and a connecting portion 30102, one end of the clamping portion 30101 is provided with the placement seat 3, the other end of the clamping portion 30101 is provided with the connecting portion 30102, and the outer surface of the clamping portion 30101 is abutted against the inner surface of the groove 201.

[0027] A plurality of threaded holes are formed on the lower surface of the base 1 , one end of the threaded hole penetrates the base 1 and extends to the inside of the rectangular block 2 , and a bolt 4 is threadedly connected to the inside of the threaded hole.

[0028] A first support plate 5 and a second support plate 6 are installed on the upper surface of the base 1, a connecting plate 7 is installed on the upper surface of the first support plate 5, a first cylinder 8 is installed on the upper surface of the connecting plate 7, an output end of the first cylinder 8 passes through the connecting plate 7 and extends downward, and a shock absorbing structure 9 is installed on the output end of the first cylinder 8.

[0029] A second cylinder 10 is installed at one end of the second support plate 6 , and an output end of the second cylinder 10 passes through the second support plate 6 . An air nozzle 11 is installed at the output end of the second support plate 6 , and a connecting air pipe 12 is installed on the outer surface of the air nozzle 11 .

[0030] The shock absorbing structure 9 includes a first column 901, a spring 902, a slider 903 and a second column 904. The upper surface of the first column 901 is installed on the lower surface of the output end of the first cylinder 8. A sliding cavity 90101 is opened inside the first column 901. A through hole is opened on the lower surface of the first column 901, and the through hole is connected to the sliding cavity 90101. A spring 902 is arranged inside the sliding cavity 90101. One end of the spring 902 is installed on the inner top of the sliding cavity 90101. A slider 903 is installed on the other end of the spring 902. The slider 903 is slidably connected to the inside of the sliding cavity 90101. A second column 904 is arranged at one end of the slider 903 away from the spring 902. The second column 904 is located inside the through hole.

[0031] An abutment block 13 is mounted on one end of the second column 904 away from the sliding block 903 .

[0032] When in use, first install it with the external air pump through the connecting air pipe 12, then place the fuel pump on the placement seat 3, then open the first cylinder 8, so that the output end of the first cylinder 8 pushes the first column 901 to move downward, so that the abutment block 13 abuts against the fuel pump and seals it, then open the second cylinder 10, so that the output end of the second cylinder 10 pushes the air nozzle 11 to abut against the air inlet of the fuel pump and seals it, then start the external air pump, so that the gas of the air pump flows to the inside of the air nozzle 11 through the connecting air pipe 12, and then the sealing of the fuel pump is tested through the air nozzle 11. When the size of the fuel pump is different from the size of the placement seat 3, by pushing the connecting part 30102, the outer surface of the clamping part 30101 and the inner surface of the groove 201 are canceled. The placement seat 3 is then removed from the rectangular block 2 for easy replacement of the placement seat 3 of different sizes, so as to accurately position the fuel pumps of different sizes.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fuel pump air tightness detection tool, comprising a base (1), characterized in that: A rectangular block (2) is provided on the upper surface of the base (1); a groove (201) is provided on the upper surface of the rectangular block (2); two grooves (201) are fixed and symmetrically arranged; a placement seat (3) is provided on the upper surface of the rectangular block (2); an elastic clamping plate (301) is provided on the lower surface of the placement seat (3); two elastic clamping plates (301) are fixed and symmetrically arranged; The elastic clamping plate (301) comprises a clamping portion (30101) and a connecting portion (30102); a placement seat (3) is provided at one end of the clamping portion (30101), and a connecting portion (30102) is provided at the other end of the clamping portion (30101); The outer surface of the clamping portion (30101) abuts against the inner surface of the groove (201).

2. The fuel pump air tightness detection tool according to claim 1, characterized in that: A plurality of threaded holes are provided on the lower surface of the base (1), one end of each threaded hole passes through the base (1) and extends to the interior of the rectangular block (2), and a bolt (4) is connected to the internal thread of each threaded hole.

3. The fuel pump air tightness detection tool according to claim 1, characterized in that: A first support plate (5) and a second support plate (6) are mounted on the upper surface of the base (1); a connecting plate (7) is mounted on the upper surface of the first support plate (5); a first cylinder (8) is mounted on the upper surface of the connecting plate (7); an output end of the first cylinder (8) passes through the connecting plate (7) and extends downward; and a shock absorbing structure (9) is mounted on the output end of the first cylinder (8).

4. The fuel pump air tightness detection tool according to claim 3, characterized in that: A second cylinder (10) is mounted on one end of the second support plate (6); an output end of the second cylinder (10) passes through the second support plate (6); an air nozzle (11) is mounted on the output end of the second support plate (6); a connecting air pipe (12) is mounted on the outer surface of the air nozzle (11).

5. The fuel pump air tightness detection tool according to claim 3, characterized in that: The shock absorbing structure (9) comprises a first column (901), a spring (902), a slider (903) and a second column (904); the upper surface of the first column (901) is mounted on the lower surface of the output end of the first cylinder (8); a sliding cavity (90101) is provided inside the first column (901); a through hole is provided on the lower surface of the first column (901); the through hole is connected to the sliding cavity (90101); a spring (902) is provided inside the sliding cavity (90101); one end of the spring (902) is mounted on the inner top of the sliding cavity (90101); a slider (903) is mounted on the other end of the spring (902); the slider (903) is slidably connected inside the sliding cavity (90101); a second column (904) is provided at one end of the slider (903) away from the spring (902); and the second column (904) is located inside the through hole.

6. The fuel pump air tightness detection tool according to claim 5, characterized in that: An abutment block (13) is mounted on one end of the second column (904) away from the sliding block (903).

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