Sampling head of indoor micro differential pressure sensor

Abstract

The utility model relates to the technical field of indoor micro differential pressure sampling, in particular to an indoor micro differential pressure sensor sampling head which comprises a fixing pipe main body, an auxiliary pipe is fixedly connected to the bottom end of the fixing pipe main body, a connecting mechanism is installed at the bottom end of the fixing pipe main body, and the connecting mechanism comprises a sampling head main body. The sampling head body is located at the bottom end of the fixing pipe body and connected with the outer wall of the auxiliary pipe in a sleeving mode, the bottom end of the connecting mechanism is fixedly connected with a sampling mechanism, the sampling mechanism comprises a sampling module, the sampling module is located at the bottom end of the sampling head body, and the top end of the sampling module is fixedly connected with a connecting shaft; and the sampling head penetrates into the sampling head main body. According to the utility model, quick connection and fixation of the fixing pipe main body and the sampling head are completed through mutual matching of internal parts of the connecting mechanism, and connection and locking of the sampling head can be completed through mutual matching of internal parts of the sampling mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of indoor differential pressure sampling, in particular to an indoor differential pressure sensor sampling head. Background Art

[0002] The differential pressure sensor is a product completed on the basis of a mechanical differential pressure gauge and mechanical differential pressure function. The mechanical pointer differential pressure gauge only has the pointer display function, and the mechanical differential pressure gauge can only realize the alarm of gas pressure change or approximate control in an invisible environment. The mechanical product has rough measurement and mechanical transmission characteristics, while the gas differential pressure sensor realizes digital visualization, high-precision measurement, big data processing and other characteristics with an electronic chip controlling the induction core unit to meet the signal acquisition requirements of modern intelligent centralized control systems.

[0003] The differential pressure sensor is connected to the sampling head through a round pipe or a hose, and the sampling head is fixed on the ceiling of the factory building. However, the existing connection method of the sampling head is connected to the top of the factory building through threads. During the long-term use of the sampling head, the threads will be worn due to the long-term aging and wear of the sampling head. Therefore, it is necessary to regularly detect or replace the connection of the sampling head or the malfunctioning sampling sensor. When the existing sampling head is inspected and replaced, the internal parts of the sampling head need to be disassembled by threads in batches, which requires the staff to disassemble and inspect the sampling head at the top of the factory building and then install and fix it. This connection and fixation is time-consuming and laborious for the staff to perform inspection operations, and the repeated rotation of the threads is easy to wear, resulting in a reduced service life of the sampling head.

[0004] Therefore, it is very necessary for us to propose an indoor differential pressure sensor sampling head to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an indoor differential pressure sensor sampling head, which can complete the quick connection and fixation of the fixed pipe main body and the sampling head through the mutual cooperation of the internal parts of the connection mechanism, so as to solve the problems that the thread connection in the prior art is time-consuming and laborious for the staff to perform inspection operations, and the repeated rotation of the threads is easy to wear, resulting in a reduced service life of the sampling head.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an indoor differential pressure sensor sampling head, including a fixed pipe main body, an auxiliary pipe is fixedly connected to the bottom end of the fixed pipe main body, a connection mechanism is installed at the bottom end of the fixed pipe main body and is sleeved on the outer wall of the auxiliary pipe, and a sampling mechanism is fixedly connected to the bottom end of the connection mechanism and penetrates into the interior of the connection mechanism.

[0007] Preferably, the connecting mechanism includes a sampling head main body, which is located at the bottom end of the fixed tube main body and is sleeved on the outer wall of the auxiliary tube. A connecting ring is sleeved on the top end of the sampling head main body and is sleeved on the outer wall of the bottom end of the fixed tube main body. Arc-shaped elastic pieces are fixedly connected to both sides of the top end of the sampling head main body and are sleeved on the outer wall of the auxiliary tube. Conical pieces are fixedly connected to both sides of the inner wall of the connecting ring. A limiting plate is fixedly connected to the inner wall of the connecting ring and is located below the conical piece and penetrates into the inside of the sampling head main body. A connecting column is slidably connected to the inside of the sampling head main body and is fixedly connected to the bottom end of the limiting plate. Connecting blocks are fixedly connected to both sides of the bottom end of the auxiliary tube and are slidably connected to the inside of the sampling head main body.

[0008] Preferably, the sampling mechanism includes a sampling module, which is located at the bottom end of the sampling head main body. A connecting shaft is fixedly connected to the top end of the sampling module and penetrates into the inside of the sampling head main body. A fixed block is slidably connected to one side of the connecting shaft and penetrates through the connecting shaft into the inside of the sampling head main body. A fixed spring is fixedly connected to the side of the fixed block away from the sampling head main body and is located inside the sampling module. The bottom end of the connecting column is fixedly connected to an arc-shaped baffle plate, which is located inside the sampling head main body and on one side of the fixed block.

[0009] Preferably, a U-shaped groove is formed between the arc-shaped elastic pieces. An arc-shaped groove matching the connecting block is formed at the connection between the top end of the sampling head main body and the U-shaped groove. The contact surface between the conical piece and the sampling head main body is provided with a fillet.

[0010] Preferably, a limiting groove matching the limiting plate is formed inside the sampling head main body. An installation groove matching the auxiliary tube is formed inside the sampling head main body. A connecting groove matching the return spring is formed inside the sampling head main body.

[0011] Preferably, a fixing groove matching the fixed block is formed inside the sampling head main body. A moving groove matching the arc-shaped baffle plate is formed inside the sampling head main body. The connecting shaft is fixedly connected to the sampling head main body through an external thread.

[0012] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0013] 1. By holding the connecting ring, move the connecting ring upward to squeeze and contract the return spring through the limit plate. The movement of the connecting ring drives the conical piece to move, releasing the extrusion on the arc-shaped elastic piece, causing the U-shaped groove between the arc-shaped elastic pieces to open when they recover. Then connect the sampling head main body and the fixed tube main body to each other, so that the auxiliary tube drives the connecting block to move into the U-shaped groove between the arc-shaped elastic pieces. Then rotate the connecting ring, so that the connecting ring drives the sampling head main body to rotate, causing the connecting block to move into the arc-shaped groove through the U-shaped groove. Then release the push on the connecting ring, so that the return spring pushes the limit plate to move. The movement of the limit plate drives the connecting ring to move back to its original position, causing the conical piece on the inner wall of the connecting ring to move and squeeze the arc-shaped elastic piece to deform, and the arc-shaped elastic piece squeezes the U-shaped groove to deform, completing the sealing operation of the U-shaped groove, and thus completing the quick connection and fixation of the fixed tube main body and the sampling head main body;

[0014] 2. When the connecting ring moves, the connecting ring moves upward to drive the connecting column at the bottom to move inside the sampling head main body through the limit plate. The movement of the connecting column drives the arc-shaped baffle at the bottom to move, so that the arc-shaped baffle blocks the fixed groove at the bottom of the sampling head main body. Then rotate the sampling module, so that the sampling module rotates to drive the connecting shaft to rotate. The connecting shaft rotates and is connected and fixed to the sampling head main body through threads, completing the connection and fixation of the sampling module and the sampling head main body. At the same time, when the fixed tube main body and the sampling head main body are connected and fixed, the connecting ring resets to drive the limit plate to drive the arc-shaped baffle to move, releasing the block on the fixed groove, so that the fixed spring pushes the fixed block to move into the sampling head main body, completing the connection locking operation of the sampling module and the sampling head main body. At the same time, when the arc-shaped baffle moves to the fixed groove, the arc-shaped baffle will push the fixed block to squeeze the fixed spring to contract and move, causing the fixed block to move out of the sampling head main body, releasing the connection lock between the sampling module and the sampling head main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the sampling head main body of the present utility model;

[0018] Figure 3 It is a schematic connection structure diagram of the sampling head main body and the sampling module of the present utility model;

[0019] Figure 4 For the present utility model Figure 2Schematic diagram of the enlarged structure at position A in the [device].

[0020] Description of the reference numerals:

[0021] 1. Fixed tube main body; 101. Auxiliary tube; 2. Connection mechanism; 201. Sampling head main body; 202. Connection ring; 203. Conical piece; 204. Return spring; 205. Limiting plate; 206. Connection block; 207. Connection column; 208. Arc-shaped elastic piece; 3. Sampling mechanism; 301. Sampling module; 302. Connection shaft; 303. Fixed block; 304. Fixed spring; 305. Arc-shaped baffle plate. Detailed implementation manners

[0022] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further introduced in detail below in conjunction with the accompanying drawings.

[0023] The present utility model provides a sampling head for an indoor micro differential pressure sensor as shown in Figures 1-4 . It includes a fixed tube main body 1. An auxiliary tube 101 is fixedly connected to the bottom end of the fixed tube main body 1. A connection mechanism 2 is installed at the bottom end of the fixed tube main body 1 and is sleeved on the outer wall of the auxiliary tube 101. The bottom end of the connection mechanism 2 is fixedly connected to a sampling mechanism 3 and penetrates into the interior of the connection mechanism 2. Through the mutual cooperation between the internal parts of the connection mechanism 2, the rapid connection and fixation of the fixed tube main body 1 and the sampling head can be completed. Then, through the mutual cooperation between the internal parts of the sampling mechanism 3, the connection locking of the sampling head can be completed.

[0024] Referring to the attached drawings of the specification Figures 1-4 , the connection mechanism 2 includes a sampling head main body 201. The sampling head main body 201 is located at the bottom end of the fixed tube main body 1 and is sleeved on the outer wall of the auxiliary tube 101. A connection ring 202 is sleeved on the top end of the sampling head main body 201 and is sleeved on the outer wall of the bottom end of the fixed tube main body 1. Arc-shaped elastic pieces 208 are fixedly connected to both sides of the top end of the sampling head main body 201 and are sleeved on the outer wall of the auxiliary tube 101. Conical pieces 203 are fixedly connected to both sides of the inner wall of the connection ring 202. A limiting plate 205 is fixedly connected to the inner wall of the connection ring 202 and is located below the conical piece 203 and penetrates into the interior of the sampling head main body 201. A connection column 207 is slidably connected to the interior of the sampling head main body 201 and is fixedly connected to the bottom end of the limiting plate 205. Connection blocks 206 are connected to both sides of the bottom end of the auxiliary tube 101 and are slidably connected to the interior of the sampling head main body 201. Through the mutual cooperation between the internal parts of the connection mechanism 2, the rapid connection and fixation of the fixed tube main body 1 and the sampling head main body 201 can be completed.

[0025] Referring to the attached drawings of the specification Figures 1-4, the sampling mechanism 3 includes a sampling module 301. The sampling module 301 is located at the bottom end of the sampling head main body 201. A connecting shaft 302 is fixedly connected to the top end of the sampling module 301 and penetrates into the interior of the sampling head main body 201. A fixing block 303 is slidably connected to one side of the connecting shaft 302 and penetrates through the connecting shaft 302 into the interior of the sampling head main body 201. A fixing spring 304 is fixedly connected to the side of the fixing block 303 away from the sampling head main body 201 and is located inside the sampling module 301. The bottom end of the connecting column 207 is fixedly connected to an arc-shaped baffle 305, which is located inside the sampling head main body 201 and on one side of the fixing block 303. Through the mutual cooperation of the internal parts of the sampling mechanism 3, the connection and locking of the sampling module 301 and the sampling head main body 201 can be completed.

[0026] Refer to the attached instructions Figures 1-4 , a U-shaped groove is formed between the arc-shaped elastic pieces 208. An arc-shaped groove matching the connecting block 206 is formed at the connection between the top end of the sampling head main body 201 and the U-shaped groove. A rounded corner is provided on the contact surface between the conical piece 203 and the sampling head main body 201. By squeezing the arc-shaped elastic pieces 208 to deform through the conical piece 203, it is convenient for the arc-shaped elastic pieces 208 to squeeze each other to seal the U-shaped groove.

[0027] Refer to the attached instructions Figures 1-4 , a limiting groove matching the limiting plate 205 is formed inside the sampling head main body 201. An installation groove matching the auxiliary pipe 101 is formed inside the sampling head main body 201. A connecting groove matching the return spring 204 is formed inside the sampling head main body 201. Through the limiting groove inside the sampling head main body 201, it is convenient for the connecting ring 202 to move on the outer wall of the sampling head main body 201.

[0028] Refer to the attached instructions Figures 1-4 , a fixing groove matching the fixing block 303 is formed inside the sampling head main body 201. A moving groove matching the arc-shaped baffle 305 is formed inside the sampling head main body 201. The connecting shaft 302 is fixedly connected to the sampling head main body 201 through an external thread. Through the fixing groove inside the sampling head main body 201, after the connecting shaft 302 is fixedly connected to the sampling head main body 201 through a thread, the fixing block 303 penetrates into the sampling head main body 201 to lock and fix the connection between the connecting shaft 302 and the sampling head main body 201.

[0029] The working principle of this utility model:

[0030] Refer to the attached instructions Figures 1-4, hold the connecting ring 202, and make the connecting ring 202 move upward to squeeze the return spring 204 to contract and move through the limit plate 205. The movement of the connecting ring 202 drives the conical piece 203 to move to relieve the extrusion of the arc-shaped elastic piece 208, so that the U-shaped groove between the restored arc-shaped elastic pieces 208 opens. Then connect the sampling head main body 201 with the fixed pipe main body 1, so that the auxiliary pipe 101 drives the connecting block 206 to move into the U-shaped groove between the arc-shaped elastic pieces 208. Then rotate the connecting ring 202, so that the connecting ring 202 drives the sampling head main body 201 to rotate, so that the connecting block 206 moves into the arc-shaped groove through the U-shaped groove. Then release the push on the connecting ring 202, so that the return spring 204 pushes the limit plate 205 to move. The movement of the limit plate 205 drives the connecting ring 202 to move to its original position, so that the conical piece 203 on the inner wall of the connecting ring 202 moves to squeeze the arc-shaped elastic piece 208 to deform, and the arc-shaped elastic piece 208 squeezes the U-shaped groove to deform, completing the sealing operation of the U-shaped groove, and then the quick connection and fixation of the fixed pipe main body 1 and the sampling head main body 201 can be completed;

[0031] Refer to the attached drawings of the specification Figures 1-4 , when the connecting ring 202 moves, the connecting ring 202 moves upward to drive the connecting column 207 at the bottom to move inside the sampling head main body 201 through the limit plate 205. The movement of the connecting column 207 drives the arc-shaped baffle 305 at the bottom to move, so that the arc-shaped baffle 305 blocks the fixed groove at the bottom of the sampling head main body 201. Then rotate the sampling module 301, so that the sampling module 301 rotates to drive the connecting shaft 302 to rotate. The connecting shaft 302 is rotationally connected and fixed to the sampling head main body 201 through threads, so that the sampling module 301 and the sampling head main body 201 are connected and fixed. At the same time, when the fixed pipe main body 1 and the sampling head main body 201 are connected and fixed, the connecting ring 202 resets to drive the limit plate 205 to drive the arc-shaped baffle 305 to move, releasing the blockage of the fixed groove, so that the fixed spring 304 pushes the fixed block 303 to move into the sampling head main body 201, and then the connection and locking operation of the sampling module 301 and the sampling head main body 201 can be completed. At the same time, when the arc-shaped baffle 305 moves to the fixed groove, the arc-shaped baffle 305 will push the fixed block 303 to squeeze the fixed spring 304 to contract and move, so that the fixed block 303 moves out of the sampling head main body 201, releasing the connection and locking between the sampling module 301 and the sampling head main body 201.

[0032] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An indoor micro-pressure difference sensor sampling head, comprising a fixed tube main body (1), characterized in that: The bottom end of the fixed pipe main body (1) is fixedly connected with an auxiliary pipe (101). The bottom end of the fixed pipe main body (1) is provided with a connecting mechanism (2), which is sleeved on the outer wall of the auxiliary pipe (101). The bottom end of the connecting mechanism (2) is fixedly connected with a sampling mechanism (3) and penetrates into the interior of the connecting mechanism (2).

2. The sampling head of an indoor differential pressure sensor according to claim 1, characterized in that: The connecting mechanism (2) includes a sampling head main body (201). The sampling head main body (201) is located at the bottom end of the fixed pipe main body (1) and is sleeved on the outer wall of the auxiliary pipe (101). The top end of the sampling head main body (201) is sleeved with a connecting ring (202), which is sleeved on the outer wall of the bottom end of the fixed pipe main body (1). On both sides of the top end of the sampling head main body (201), arc-shaped elastic pieces (208) are fixedly connected and are sleeved on the outer wall of the auxiliary pipe (101). On both sides of the inner wall of the connecting ring (202), conical pieces (203) are fixedly connected. The inner wall of the connecting ring (202) is fixedly connected with a limiting plate (205), which is located below the conical piece (203) and penetrates into the interior of the sampling head main body (201). A connecting column (207) is slidably connected to the interior of the sampling head main body (201) and is fixedly connected to the bottom end of the limiting plate (205). On both sides of the bottom end of the auxiliary pipe (101), connecting blocks (206) are connected and are slidably connected to the interior of the sampling head main body (201).

3. The sampling head of an indoor differential pressure sensor according to claim 2, characterized in that: The sampling mechanism (3) includes a sampling module (301). The sampling module (301) is located at the bottom end of the sampling head main body (201). The top end of the sampling module (301) is fixedly connected with a connecting shaft (302), which penetrates into the interior of the sampling head main body (201). On one side of the connecting shaft (302), a fixing block (303) is slidably connected and penetrates through the connecting shaft (302) into the interior of the sampling head main body (201). On the side of the fixing block (303) away from the sampling head main body (201), a fixing spring (304) is fixedly connected and is located inside the sampling module (301). The bottom end of the connecting column (207) is fixedly connected with an arc-shaped baffle (305), which is located inside the sampling head main body (201) and on one side of the fixing block (303).

4. The sampling head of an indoor micro-pressure difference sensor according to claim 2, characterized in that: A U-shaped groove is formed between the arc-shaped elastic pieces (208). An arc-shaped groove matching the connecting block (206) is formed at the connection between the top end of the sampling head main body (201) and the U-shaped groove. The contact surface between the conical piece (203) and the sampling head main body (201) is provided with a rounded corner.

5. The sampling head of an indoor micro-pressure difference sensor according to claim 2, characterized in that: A limiting groove matching the limiting plate (205) is formed in the interior of the sampling head main body (201). An installation groove matching the auxiliary pipe (101) is formed in the interior of the sampling head main body (201). A connection groove matching the return spring (204) is formed in the interior of the sampling head main body (201).

6. The sampling head of an indoor differential pressure sensor according to claim 3, characterized in that: A fixing groove matching with the fixing block (303) is formed inside the sampling head main body (201), and a movable groove matching with the arc-shaped baffle (305) is formed inside the sampling head main body (201). The connecting shaft (302) is fixedly connected to the sampling head main body (201) through an external thread.

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