Stainless steel three-pin pressure gauge convenient to install

Abstract

The utility model relates to the technical field of pressure gauges, in particular to a stainless steel three-needle pressure gauge convenient to install, which comprises a pressure gauge body, a connecting pipe is arranged at the bottom of the pressure gauge body, and a fixing pipe is arranged at the bottom end of the connecting pipe. A mounting mechanism; the mounting mechanism comprises a locking assembly arranged on the surface of the fixing pipe. Through the arrangement of the locking assembly, in the installation process, only one operator needs to sleeve the top end of the fixed pipe with the connecting pipe, and then the pressure gauge body and the connecting pipe are rotated clockwise, so that the fixed block can be fixed under the limiting action of the clamping block and the limiting block, and the situation that the connection relation between the connecting pipe and the fixed pipe is disengaged is avoided; when the device needs to be disassembled, the limiting of the clamping block to the fixing block can be released only by pulling the lifting seat upwards, compared with a comparison case, the device is more convenient to assemble and disassemble, the working process can be completed only by one operator, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauges, in particular to a stainless steel three-needle pressure gauge which is easy to install. Background Art

[0002] Pressure gauges are instruments that use elastic elements as sensitive elements to measure and indicate pressures higher than the ambient pressure. They are widely used in almost all industrial processes and scientific research fields. They can be found everywhere in the fields of thermal pipe networks, oil and gas transmission, water and gas supply systems, and vehicle repair and maintenance shops. Existing pressure gauges have too simple installation methods. Most pressure gauges have threads at the joints, so that the joints are screwed into the connecting pipes. This installation is not only cumbersome, but also rust stains will form between the connecting pipes and the joints over time, making it inconvenient to disassemble and replace the pressure gauge. If the joints are damaged, the entire pressure gauge cannot be used again, and the use effect is poor.

[0003] After searching, a Chinese patent disclosed "a pressure gauge that is easy to install" (publication number CN218822929U). This patented technology can pull the positioning shaft upward and rotate the L-shaped clamping rod. When the positioning shaft is pulled, the first spring is compressed. When the L-shaped clamping rod contacts the fixed plate, the positioning shaft is released. Under the action of the elastic force of the first spring, the positioning shaft moves downward. The positioning shaft and the L-shaped clamping rod are clamped together to achieve the effect of positioning and installing the fixed pipe, thereby facilitating the installation and removal of the pressure gauge, reducing the workload of the staff, and the joint of the pressure gauge and the connecting pipe have strong sealing performance, and the use effect is good;

[0004] However, when the device rotates the L-shaped clamping rod, the two positioning shafts need to be pushed upward at the same time. When the L-shaped clamping rod is not rotated to the specified position, the restrictions on the two positioning shafts cannot be released. At this time, two or more installers are required to complete the above operation, and the installation process is more troublesome.

[0005] Therefore, those skilled in the art provide a foldable industrial vacuum cleaner nozzle structure and an industrial vacuum cleaner to solve the problems raised in the above background technology. Utility Model Content

[0006] The utility model aims to provide a stainless steel three-needle pressure gauge which is easy to install, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A stainless steel three-needle pressure gauge that is easy to install, comprising: a pressure gauge body, a connecting tube is provided at the bottom of the pressure gauge body, and a fixing tube is provided at the bottom end of the connecting tube; an installation mechanism; wherein the installation mechanism comprises a locking assembly arranged on the surface of the fixing tube, and the locking assembly is used to lock and fix the connecting tube and the fixing tube; the installation mechanism also comprises a sealing assembly arranged inside the connecting tube, and the sealing assembly is used to seal the connecting tube and the fixing tube; the locking assembly comprises a locking seat fixedly connected to the surface of the fixing tube, the inner wall of the locking seat is provided with an annular groove, the top of the locking seat is provided with two reserved openings connected to the annular groove, the bottom end of the connecting tube is fixedly connected to a fixing ring, and the bottom of the fixing ring is fixedly connected to two fixing blocks.

[0009] A stainless steel three-needle pressure gauge that is easy to install as described above: two clamping blocks are arranged inside the annular groove, two movable grooves are opened on the inner top wall of the annular groove, the top of the clamping block passes through the movable groove and is fixedly connected with a spring, and the top of the spring is fixedly connected to the inner top wall of the movable groove.

[0010] A stainless steel three-needle pressure gauge that is easy to install as described above: two limit blocks are fixedly connected to the inner bottom wall of the annular groove, and the fixed block is located between the limit block and the clamping block.

[0011] The stainless steel three-needle pressure gauge that is easy to install as described above: sliders are fixedly connected to both sides of the block, and the inner walls on both sides of the movable groove are provided with sliding grooves, and the sliders slide on the inner walls of the sliding grooves.

[0012] A stainless steel three-needle pressure gauge that is easy to install as described above: an unlocking rod is fixedly connected to the top of the block, the top of the unlocking rod passes through the locking seat and is fixedly connected to a connecting rod, a lifting seat is sleeved on the surface of the locking seat, and the inner wall of the lifting seat is fixedly connected to one end of the connecting rod.

[0013] A stainless steel three-needle pressure gauge that is easy to install as described above: the sealing assembly includes a sealing ring arranged inside a connecting pipe, the inner wall of the connecting pipe is provided with a sealing groove, and the sealing ring is located on the inner top wall of the sealing groove.

[0014] A stainless steel three-needle pressure gauge that is easy to install as described above: a connecting ring is fixedly connected to the top of the sealing ring, a connecting groove is opened on the inner top wall of the sealing groove, and the top end of the connecting ring penetrates into the interior of the connecting groove.

[0015] A stainless steel three-needle pressure gauge that is easy to install as described above: the sealing assembly also includes a sealing sleeve embedded in the inner wall of the sealing groove, the surface of the fixed tube is provided with equidistantly distributed resistance-increasing rings, and the top end of the fixed tube passes through the sealing sleeve, the sealing groove and the interior of the connecting tube in sequence.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] By setting the locking assembly, the entire installation process only requires one operator to put the connecting pipe on the top of the fixed pipe, and then rotate the pressure gauge body and the connecting pipe clockwise, so that the fixed block can be fixed under the limiting action of the clamping block and the limiting block, so as to avoid the connection relationship between the connecting pipe and the fixed pipe from being separated. When the device needs to be disassembled, it is only necessary to pull the lifting seat upward to unlock the limiting position of the clamping block on the fixed block. Compared with the comparative case, the installation and disassembly process of the device is more convenient, and only one operator is required to complete the work process, which effectively improves the work efficiency.

[0018] At the same time, by setting a sealing component, after the connecting pipe sleeve is set to the top of the fixed pipe, the top of the fixed pipe will be pressed against the bottom of the sealing ring, and the fixed pipe and the connecting pipe can be sealed under the action of the sealing ring. Subsequently, under the action of the resistance increasing ring and the sealing sleeve, the sealing sleeve can seal the fixed pipe and the connecting pipe again, and the resistance increasing ring can squeeze the sealing sleeve to further avoid gaps between the sealing sleeve and the surface of the fixed pipe. At the same time, the setting of the connecting ring and the connecting groove can facilitate the replacement of the sealing ring. Compared with the method of fixing the sealing ring and not being able to replace it in the comparative case, the practicality of this device is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the structure of a stainless steel three-needle pressure gauge that is easy to install.

[0020] Figure 2 The present invention is a structural schematic diagram of the connection between the connecting pipe, the fixing pipe and the installation mechanism in a stainless steel three-needle pressure gauge which is easy to install.

[0021] Figure 3 The present invention is a schematic diagram of the distribution of the fixing block, the limiting block and the clamping block in a stainless steel three-needle pressure gauge which is easy to install.

[0022] Figure 4 It is a stainless steel three-needle pressure gauge that is easy to install. Figure 1 A is an enlarged view of the middle image.

[0023] Figure 5 It is a stainless steel three-needle pressure gauge that is easy to install. Figure 2 Enlarged view of B.

[0024] In the figure: 1. Pressure gauge body; 2. Connecting pipe; 3. Mounting mechanism; 31. Locking assembly; 3101. Locking seat; 3102. Annular groove; 3103. Fixed ring; 3104. Block; 3105. Reserved opening; 3106. Movable groove; 3107. Spring; 3108. Connecting rod; 3109. Lifting seat; 3110. Fixed block; 3111. Limiting block; 3112. Sliding block; 3113. Sliding groove; 3114. Unlocking rod; 32. Sealing assembly; 3201. Sealing ring; 3202. Connecting ring; 3203. Connecting groove; 3204. Sealing groove; 3205. Sealing sleeve; 3206. Resistance increasing ring; 4. Fixed pipe. DETAILED DESCRIPTION

[0025] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0026] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0027] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0028] See also Figures 1 to 5 In an embodiment of the utility model, a stainless steel three-needle pressure gauge that is easy to install includes: a pressure gauge body 1, a connecting tube 2 is provided at the bottom of the pressure gauge body 1, and a fixing tube 4 is provided at the bottom end of the connecting tube 2; an installation mechanism 3; wherein the installation mechanism 3 includes a locking assembly 31 provided on the surface of the fixing tube 4, and the locking assembly 31 is used to lock and fix the connecting tube 2 and the fixing tube 4; the installation mechanism 3 also includes a sealing assembly 32 provided inside the connecting tube 2, and the sealing assembly 32 is used to seal between the connecting tube 2 and the fixing tube 4;

[0029] Specifically, the bottom end of the fixed tube 4 is fixedly connected to the surface of the pipeline to be tested, and the top end of the fixed tube 4 penetrates into the interior of the connecting tube 2, so that the pressure gauge body 1 is connected to the fixed tube 4 through the connecting tube 2;

[0030] The locking assembly 31 includes a locking seat 3101 fixedly connected to the surface of the fixing pipe 4, the inner wall of the locking seat 3101 is provided with an annular groove 3102, the bottom end of the connecting pipe 2 is fixedly connected to a fixing ring 3103, and the bottom of the fixing ring 3103 is fixedly connected to two fixing blocks 3110;

[0031] In detail, the top of the locking seat 3101 is provided with two reserved openings 3105 connected to the annular groove 3102. After the connecting pipe 2 is connected to the fixing pipe 4, the fixing ring 3103 is driven into the locking seat 3101 through the connecting pipe 2. At this time, the fixing block 3110 enters the inner part of the annular groove 3102 through the reserved openings 3105.

[0032] Two clamping blocks 3104 are arranged inside the annular groove 3102, and two movable grooves 3106 are opened on the inner top wall of the annular groove 3102. The top of the clamping block 3104 passes through the movable groove 3106 and is fixedly connected with a spring 3107, and the top of the spring 3107 is fixedly connected to the inner top wall of the movable groove 3106; two limit blocks 3111 are fixedly connected to the inner bottom wall of the annular groove 3102, and the fixed block 3110 is located between the limit block 3111 and the clamping block 3104; sliding blocks 3112 are fixedly connected on both sides of the clamping block 3104, and sliding grooves 3113 are opened on the inner walls of the two sides of the movable groove 3106, and the sliding blocks 3112 slide on the inner walls of the sliding grooves 3113

[0033] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 When the fixing block 3110 enters the annular groove 3102, the connecting tube 2 is rotated clockwise, and the connecting tube 2 will drive the fixing block 3110 to rotate clockwise through the fixing ring 3103. The top of the fixing block 3110 and the bottom of the clamping block 3104 are both provided with matching inclined surfaces, until the fixing block 3110 contacts the clamping block 3104. Under the action of the inclined surfaces of the two, the fixing block 3110 will push the clamping block 3104 to move upward, and the clamping block 3104 will drive the sliding block 3112 to slide in the sliding groove 3113 to prevent the clamping block 3104 from being offset during movement. When the two are misaligned, the fixing block 3110 is blocked by the limiting block 3111 to prevent the fixing block 3110 from being excessively displaced. At this time, the clamping block 3104 will be reset under the action of the spring 3107, so as to limit the fixing block 3110 and prevent relative rotation between the connecting tube 2 and the fixing tube 4 after the installation is completed.

[0034] The top of the block 3104 is fixedly connected with an unlocking rod 3114, the top of the unlocking rod 3114 passes through the locking seat 3101 and is fixedly connected with a connecting rod 3108, the surface of the locking seat 3101 is sleeved with a lifting seat 3109, and the inner wall of the lifting seat 3109 is fixedly connected with one end of the connecting rod 3108;

[0035] In detail, when the device needs to be disassembled, one hand is used to hold the lifting seat 3109 and lift it upwards. At this time, the unlocking rod 3114 will move upwards driven by the connecting rod 3108 and the lifting seat 3109, and then the unlocking rod 3114 will drive the clamping block 3104 to move upwards and release the limit of the fixing block 3110, and finally release the connection relationship between the connecting pipe 2 and the fixing pipe 4;

[0036] When the locking cam 3104 is in the unlocking state, the locking cam 3104 is locked and the locking cam 3104 is locked.

[0037] As an embodiment of the present invention, please refer to Figure 1 , Figure 2 , Figure 5 , one A stainless steel three-needle pressure gauge that is easy to install, the installation mechanism 3 also includes a sealing component 32 arranged inside the connecting pipe 2, the sealing component 32 is used to seal between the connecting pipe 2 and the fixed pipe 4, the sealing component 32 includes a sealing ring 3201 arranged inside the connecting pipe 2, the inner wall of the connecting pipe 2 is provided with a sealing groove 3204, and the sealing ring 3201 is located on the inner top wall of the sealing groove 3204;

[0038] The top of the sealing ring 3201 is fixedly connected with a connecting ring 3202, the inner top wall of the sealing groove 3204 is provided with a connecting groove 3203, and the top of the connecting ring 3202 penetrates into the interior of the connecting groove 3203;

[0039] For details, please refer to Figure 2 When the top of the fixed tube 4 enters the interior of the connecting tube 2, the top of the fixed tube 4 will be pressed against the bottom of the sealing ring 3201. When in use, the sealing ring 3201 can seal the gap between the fixed tube 4 and the connecting tube 2. At the same time, after a period of use, when the sealing ring 3201 is corroded and the sealing effect is reduced, the device is disassembled and the old sealing ring 3201 is taken out. Then, the new sealing ring 3201 is connected with the connecting groove 3203 through the connecting ring 3202 thereon, and the new sealing ring 3201 can be installed and fixed, which is convenient for replacing the wearing sealing ring 3201;

[0040] The sealing assembly 32 further includes a sealing sleeve 3205 embedded in the inner wall of the sealing groove 3204, and the surface of the fixed pipe 4 is provided with equidistantly distributed resistance increasing rings 3206, and the top end of the fixed pipe 4 passes through the sealing sleeve 3205, the sealing groove 3204 and the interior of the connecting pipe 2 in sequence;

[0041] For details, please refer to Figure 2 , Figure 5 By setting the resistance increasing ring 3206 and the sealing sleeve 3205 , the resistance increasing ring 3206 will enter the sealing sleeve 3205 along with the fixed pipe 4 , and then the sealing sleeve 3205 will further seal the gap between the surface of the fixed pipe 4 and the inner wall of the connecting pipe 2 under the extrusion of the resistance increasing ring 3206 .

[0042] In the embodiment of the utility model, after the pressure gauge body 1 and the connecting pipe 2 are connected to the fixed pipe 4, the fixed block 3110 at the bottom of the connecting pipe 2 is fixed in the locking seat 3101 by using the limit block 3111 and the clamping block 3104 in the locking assembly 31, so as to lock the connecting pipe 2 and the fixed pipe 4 to prevent looseness therebetween. During the installation of the connecting pipe 2 and the fixed pipe 4, the sealing assembly 32 can seal the gap between the connecting pipe 2 and the fixed pipe 4 to prevent leakage of the medium in the pipeline.

[0043] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0044] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A stainless steel three-needle pressure gauge that is easy to install, characterized in that: include: A pressure gauge body (1), wherein a connecting pipe (2) is arranged at the bottom of the pressure gauge body (1), and a fixing pipe (4) is arranged at the bottom end of the connecting pipe (2); Mounting mechanism (3); Wherein, the mounting mechanism (3) comprises a locking assembly (31) arranged on the surface of the fixing tube (4), and the locking assembly (31) is used to lock and fix the connecting tube (2) and the fixing tube (4); The mounting mechanism (3) further comprises a sealing assembly (32) arranged inside the connecting pipe (2), wherein the sealing assembly (32) is used to seal between the connecting pipe (2) and the fixing pipe (4); The locking assembly (31) comprises a locking seat (3101) fixedly connected to the surface of the fixing tube (4); an annular groove (3102) is provided on the inner wall of the locking seat (3101); two reserved openings (3105) are provided on the top of the locking seat (3101) and are connected to the annular groove (3102); the bottom end of the connecting tube (2) is fixedly connected to a fixing ring (3103); and two fixing blocks (3110) are fixedly connected to the bottom of the fixing ring (3103).

2. A stainless steel three-needle pressure gauge that is easy to install according to claim 1, characterized in that: Two clamping blocks (3104) are arranged inside the annular groove (3102), and two movable grooves (3106) are opened on the inner top wall of the annular groove (3102). The top of the clamping block (3104) passes through the movable groove (3106) and is fixedly connected to a spring (3107), and the top end of the spring (3107) is fixedly connected to the inner top wall of the movable groove (3106).

3. A stainless steel three-needle pressure gauge that is easy to install according to claim 2, characterized in that: Two limiting blocks (3111) are fixedly connected to the inner bottom wall of the annular groove (3102), and the fixed block (3110) is located between the limiting block (3111) and the clamping block (3104).

4. A stainless steel three-needle pressure gauge that is easy to install according to claim 2, characterized in that: Slide blocks (3112) are fixedly connected to both sides of the block (3104), and slide grooves (3113) are provided on the inner walls of both sides of the movable groove (3106), and the slide blocks (3112) slide on the inner walls of the slide grooves (3113).

5. The stainless steel three-needle pressure gauge that is easy to install according to claim 2 is characterized in that: The top of the block (3104) is fixedly connected to an unlocking rod (3114), the top of the unlocking rod (3114) passes through the locking seat (3101) and is fixedly connected to a connecting rod (3108), the surface of the locking seat (3101) is sleeved with a lifting seat (3109), and the inner wall of the lifting seat (3109) is fixedly connected to one end of the connecting rod (3108).

6. The stainless steel three-needle pressure gauge that is easy to install according to claim 1 is characterized in that: The sealing assembly (32) comprises a sealing ring (3201) arranged inside the connecting pipe (2); a sealing groove (3204) is provided on the inner wall of the connecting pipe (2); and the sealing ring (3201) is located on the inner top wall of the sealing groove (3204).

7. The stainless steel three-needle pressure gauge that is easy to install according to claim 6 is characterized in that: The top of the sealing ring (3201) is fixedly connected to a connecting ring (3202), the inner top wall of the sealing groove (3204) is provided with a connecting groove (3203), and the top end of the connecting ring (3202) penetrates into the interior of the connecting groove (3203).

8. The stainless steel three-needle pressure gauge that is easy to install according to claim 6 is characterized in that: The sealing assembly (32) further comprises a sealing sleeve (3205) embedded in the inner wall of the sealing groove (3204); the surface of the fixed tube (4) is provided with equidistantly distributed resistance increasing rings (3206); and the top end of the fixed tube (4) passes through the sealing sleeve (3205), the sealing groove (3204) and the interior of the connecting tube (2) in sequence.

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