Positive and negative pressure volume air tightness detector

Abstract

The utility model relates to the technical field of air tightness detection devices, in particular to a positive and negative pressure volume air tightness detector, which is characterized in that an upper substrate is arranged above a detector main body, two sides of the upper substrate are fixedly connected with side vertical plates, and the surface of each side vertical plate is provided with a first groove and a positioning groove; the protective cover is arranged on the outer side of the upper base plate in a sleeving mode. A lifting block is fixedly installed in the protective cover. The handle is fixedly installed on the side face of the protective cover, a pulling plate is installed in the handle, and a positioning pin is fixedly connected to the surface of the pulling plate. By arranging the protective cover, when the detector is used, the detector can be used only by lifting the protective cover upwards through the handle, the detector is prevented from being lifted, the operation is convenient, the protective cover is lifted linearly, the operation is rapid, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of air tightness detection devices, in particular to a positive and negative pressure volume air tightness detector. Background Art

[0002] The positive and negative pressure volumetric air tightness tester is a type of equipment that tests product sealing. During positive pressure testing, a certain amount of gas is filled into the object to make the internal pressure higher than the external pressure. The change in internal pressure is monitored to determine whether the object is leaking. During negative pressure testing, the gas inside the object is extracted to make the internal pressure lower than the external pressure. The change in internal pressure is monitored to determine its sealing.

[0003] In the prior art, the patent with announcement number CN112033614A discloses a positive and negative pressure airtight device, which comprises a support plate, a cover plate, a rotating part, a threaded tube, a threaded rod, a driven bevel gear, a driving bevel gear, a rotating shaft and a bearing to form a protective mechanism. The detector body is protected by a protective box, and when not in use, the detector body is stored in the protective box. At the same time, the cover plate covers the box opening of the protective box to prevent dust from entering the interior of the detector body in the protective box, thereby improving the service life of the detector body.

[0004] In the above technology, when using the detector, it is necessary to drive the threaded tube to rotate through the rotating shaft and gears so that the threaded rod in the threaded tube lifts the detector to the protective mechanism. However, the detector is generally heavy, which leads to a large rotational resistance between the threaded tube and the threaded rod, and then leads to a large rotational resistance of the rotating shaft, making the operation more inconvenient. Moreover, lifting the detector by the threaded rod requires multiple rotations of the rotating shaft, which is inefficient, making the use and storage of the detector more inconvenient. Utility Model Content

[0005] The purpose of the present invention is to provide a positive and negative pressure volume air tightness detector to solve the problems raised by the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A positive and negative pressure volume air tightness detector, comprising:

[0008] The detector body is provided with an upper base plate above the detector body, and side plates are fixedly connected to both sides of the upper base plate, and the surfaces of the side plates are provided with a first groove and a positioning groove;

[0009] A protective cover is sleeved on the outer side of the upper base plate, and a lifting block is fixedly installed inside the protective cover;

[0010] The handle is fixedly installed on the side of the protective cover, a pull plate is installed inside the handle, and a positioning pin is fixedly connected to the surface of the pull plate.

[0011] Preferably, a carrying plate is fixedly mounted on the surface of the detector body.

[0012] Preferably, the upper base plate is arranged above the carrying plate, a lower pressing plate is arranged between the upper base plate and the carrying plate, and a control mechanism for controlling the lifting of the lower pressing plate is installed on the surface of the upper base plate.

[0013] Preferably, the side panels are symmetrically arranged in two groups, the bottom of the side panels are fixedly connected to the surface of the detector body, the side panels are used to support the upper base plate, and the surface of each group of side panels is provided with multiple groups of positioning grooves, and the multiple groups of positioning grooves are vertically distributed.

[0014] Preferably, the inner wall of the protective cover is slidably fitted with the side surface of the upper base plate, and the lifting block is slidably arranged inside the first groove.

[0015] Preferably, mounting grooves are provided on both sides of the handle, and guide columns are fixedly provided inside the mounting grooves.

[0016] Preferably, the two ends of the pull plate are slidably arranged inside the mounting groove, guide holes are opened at both ends of the pull plate, the pull plate is slidably sleeved on the surface of the guide column through the guide holes, and a reset spring is provided on the side of the pull plate away from the protective cover.

[0017] Preferably, the positioning pin is arranged on a side of the pull plate close to the protective cover, the positioning pin extends into the interior of the protective cover, and an inclined surface is arranged above one end of the positioning pin extending into the interior of the protective cover.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model provides a protective cover, and when using the detector, the detector can be used only by lifting the protective cover upwards through the handle, avoiding the need to lift the detector, and the operation is convenient. Lifting the protective cover is a linear operation, which is quick and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 A in the middle is an enlarged schematic diagram;

[0022] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the protective cover structure of the utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the pull plate and the positioning pin of the utility model.

[0025] In the figure: detector body 1, carrying plate 11, upper base plate 2, side plate 21, first slot 22, positioning slot 23, protective cover 3, lifting block 31, handle 32, mounting slot 321, guide column 322, pull plate 33, guide hole 331, positioning pin 34, return spring 35, lower pressure plate 4. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in conjunction with the accompanying drawings.

[0027] Please see the attached Figure 1 To the attached Figure 5 As shown, the utility model provides a positive and negative pressure volume air tightness detector, including: a detector body 1, a supporting plate 11 is fixedly installed on the surface of the detector body 1, an upper base plate 2 is arranged above the detector body 1, the upper base plate 2 is arranged above the supporting plate 11, a lower pressure plate 4 is arranged between the upper base plate 2 and the supporting plate 11, and a control mechanism for controlling the lifting of the lower pressure plate 4 is installed on the surface of the upper base plate 2, side vertical plates 21 are fixedly connected on both sides of the upper base plate 2, a first groove 22 and a positioning groove 23 are provided on the surface of the side vertical plates 21, two groups of side vertical plates 21 are symmetrically arranged, the bottom of the side vertical plates 21 is fixedly connected to the surface of the detector body 1, the side vertical plates 21 are used to support the upper base plate 2, and a plurality of groups of positioning grooves 23 are provided on the surface of each group of the side vertical plates 21, and the plurality of groups of positioning grooves 23 are vertically distributed.

[0028] The protective cover 3 is sleeved on the outer side of the upper base plate 2, and the inner wall of the protective cover 3 is slidably fitted with the side surface of the upper base plate 2. A lifting block 31 is fixedly installed inside the protective cover 3, and the lifting block 31 is slidably set inside the first groove 22.

[0029] The handle 32 is fixedly mounted on the side of the protective cover 3, and mounting grooves 321 are provided on both sides of the handle 32. A guide column 322 is fixedly provided inside the mounting groove 321. A pull plate 33 is installed inside the handle 32. Both ends of the pull plate 33 are slidably arranged inside the mounting groove 321. Guide holes 331 are provided at both ends of the pull plate 33. The pull plate 33 is slidably sleeved on the surface of the guide column 322 through the guide holes 331. A return spring 35 is provided on the side of the pull plate 33 away from the protective cover 3. A positioning pin 34 is fixedly connected to the surface of the pull plate 33. The positioning pin 34 is provided on the side of the pull plate 33 close to the protective cover 3. The positioning pin 34 extends to the inside of the protective cover 3, and the upper part of the end of the positioning pin 34 extending to the inside of the protective cover 3 is set as an inclined surface.

[0030] The utility model proposes a positive and negative pressure volume air tightness tester. When in use, the protective cover 3 is lifted upward by the handle 32. During the process, the inclined surface of the positioning pin 34 is squeezed and retracted toward the inside of the handle 32, so that the end of the positioning pin 34 is disengaged from the inside of one group of positioning grooves 23 and then inserted into the inside of the next group of positioning grooves 23 under the action of the rebound force of the reset spring 35. After multiple cycles, until the protective cover 3 reaches the specified position, the detector leaks out and the positioning pin 34 is inserted into the inside of the corresponding positioning groove 23.

[0031] By setting up the protective cover 3, when using the detector, the detector can be used by simply lifting the protective cover 3 upwards through the handle 32, avoiding the need to lift the detector, which is easy to operate. Lifting the protective cover 3 is a linear operation, which is quick and efficient.

[0032] As a further improvement of the present invention, during the detection process or after the detector is used, the positioning pin 34 is disengaged from the inside of the positioning groove 23 by pulling the pull plate 33, and then the protective cover 3 is controlled to fall by the handle 32, so that the protective cover 3 covers the supporting plate 11 and the lower pressure plate 4, thereby completing the protective covering of the detector.

[0033] As a further improvement of the present invention, the first slot 22 and the lifting block 31 are provided to ensure the stability of the lifting of the protective cover 3 .

[0034] Working principle: The positive and negative pressure volume air tightness tester is a kind of equipment for product sealing. The utility model proposes a positive and negative pressure volume air tightness tester. When in use, the protective cover 3 is lifted up by the handle 32. During the process, the inclined surface of the positioning pin 34 is squeezed and retracted into the inside of the handle 32, so that the end of the positioning pin 34 is disengaged from the inside of a group of positioning grooves 23 and then inserted into the inside of the next group of positioning grooves 23 under the action of the rebound force of the reset spring 35. After multiple cycles, until the protective cover 3 reaches the specified position, the detector leaks out, and the positioning pin 34 is inserted into the inside of the corresponding positioning groove 23. During the detection process or after the detector is used, the positioning pin 34 is disengaged from the inside of the positioning groove 23 by pulling the pull plate 33, and then the protective cover 3 is controlled to fall by the handle 32, so that the protective cover 3 covers the supporting plate 11 and the lower pressure plate 4, thereby completing the protective covering of the detector.

[0035] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A positive and negative pressure volume air tightness detector, characterized in that: include: A detector body (1), an upper base plate (2) is provided above the detector body (1), side upright plates (21) are fixedly connected to both sides of the upper base plate (2), and a first groove (22) and a positioning groove (23) are provided on the surface of the side upright plates (21); A protective cover (3), the protective cover (3) being sleeved on the outer side of the upper base plate (2), and a lifting block (31) being fixedly installed inside the protective cover (3); A handle (32) is fixedly mounted on the side of the protective cover (3); a pull plate (33) is mounted inside the handle (32); and a positioning pin (34) is fixedly connected to the surface of the pull plate (33).

2. The positive and negative pressure volume air tightness detector according to claim 1, characterized in that: A bearing plate (11) is fixedly mounted on the surface of the detector body (1).

3. The positive and negative pressure volume air tightness detector according to claim 2, characterized in that: The upper substrate (2) is arranged above the supporting plate (11), a lower pressing plate (4) is arranged between the upper substrate (2) and the supporting plate (11), and a control mechanism for controlling the lifting of the lower pressing plate (4) is installed on the surface of the upper substrate (2).

4. The positive and negative pressure volume air tightness tester according to claim 3, characterized in that: The side panels (21) are symmetrically arranged in two groups. The bottom of the side panels (21) is fixedly connected to the surface of the detector body (1). The side panels (21) are used to support the upper base plate (2). The surface of each group of the side panels (21) is provided with multiple groups of positioning grooves (23), and the multiple groups of positioning grooves (23) are vertically distributed.

5. The positive and negative pressure volume air tightness tester according to claim 4, characterized in that: The inner wall of the protective cover (3) is slidably fitted with the side surface of the upper base plate (2), and the lifting block (31) is slidably arranged inside the first groove (22).

6. The positive and negative pressure volume air tightness tester according to claim 5, characterized in that: Mounting grooves (321) are provided on both sides of the handle (32), and guide posts (322) are fixedly provided inside the mounting grooves (321).

7. The positive and negative pressure volume air tightness tester according to claim 6, characterized in that: The two ends of the pull plate (33) are slidably arranged inside the mounting groove (321), and guide holes (331) are provided at both ends of the pull plate (33). The pull plate (33) is slidably sleeved on the surface of the guide column (322) through the guide holes (331), and a return spring (35) is provided on the side of the pull plate (33) away from the protective cover (3).

8. The positive and negative pressure volume air tightness tester according to claim 7, characterized in that: The positioning pin (34) is arranged on a side of the pull plate (33) close to the protective cover (3), and the positioning pin (34) extends into the interior of the protective cover (3). The upper part of one end of the positioning pin (34) extending into the interior of the protective cover (3) is arranged as an inclined surface.

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