External adjusting type pre-tightening ball valve with export sampling structure

Abstract

The utility model discloses an external adjustment type pre-tightening ball valve with a leading-out sampling structure, and relates to the technical field of external adjustment type pre-tightening ball valves, the external adjustment type pre-tightening ball valve comprises a ball valve main body, a ball body and a valve rod, the two ends of the ball valve main body are respectively provided with a liquid inlet pipe and a liquid outlet pipe from left to right, the ball body is arranged in the ball valve main body, and the valve rod is arranged in the ball valve main body. A valve seat is installed above the ball valve body, a valve rod connected with the ball penetrates through the middle of the valve seat, a handle is connected to the upper end of the valve rod, a sampling pipe is arranged above a liquid inlet pipe, a sampling box is installed in the sampling pipe, and through grooves are formed in the two sides of the sampling box. According to the external adjusting type pre-tightening ball valve with the sample leading-out structure, the sampling box can be moved up and down through mutual cooperation of the pushing rod and the connecting base, leading-out sampling can be conveniently conducted on the external adjusting type pre-tightening ball valve, auxiliary limiting can be conducted on the butt joint position through the limiting sleeve moving in a telescopic mode, and installation deviation is prevented; and the external adjusting type pre-tightening ball valve can be conveniently subjected to auxiliary limiting installation.

Description

Technical Field

[0001] The utility model relates to the technical field of externally adjustable pre-tightened ball valves, in particular to an externally adjustable pre-tightened ball valve with a lead-out sampling structure. Background Art

[0002] Ball valve is a commonly used valve type used to control the flow of fluids. The ball valve is named after the spherical valve core. The ball valve usually opens and closes the fluid by rotating. The externally adjusted pre-tightened ball valve can provide reliable sealing performance under high pressure conditions to avoid media leakage. The externally adjusted pre-tightened ball valve is a high-performance and reliable valve suitable for industrial application environments with high requirements for sealing performance and flow control.

[0003] When the externally adjustable preloaded ball valves currently on the market are used, in order to ensure that the quality and properties of the medium in the pipeline system meet the requirements, the medium in the ball valve is sampled and tested regularly. The existing externally adjustable preloaded ball valves are cumbersome to operate when sampling, and the samples cannot be quickly exported for sampling. Therefore, we need to propose an externally adjustable preloaded ball valve with an export sampling structure. Utility Model Content

[0004] The utility model aims to provide an externally adjustable pre-tightening ball valve with a lead-out sampling structure to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an externally adjustable pre-tightened ball valve with a sampling structure, comprising a ball valve body, wherein two ends of the ball valve body are respectively provided with a liquid inlet pipe and a liquid outlet pipe, and a sphere is provided inside the ball valve body, a valve seat is installed above the ball valve body, a valve stem connected to the sphere passes through the middle of the valve seat, a handle is connected to the upper end of the valve stem, a sampling tube is provided above the liquid inlet pipe, and a sampling box is installed inside the sampling tube, through grooves are provided on both sides of the sampling box, a sampling port is provided on one side of the sampling tube, and a sealing cover is installed inside the sampling port.

[0006] Preferably, a connecting seat is connected to the top of the sampling box, and a pushing rod is installed above the sampling box.

[0007] Preferably, the output end of the push rod passes through the sampling box and is connected to the connecting seat, and guide grooves are provided on both sides of the inner wall of the sampling tube.

[0008] Preferably, a guide seat is butted against the interior of the guide groove, and an outer end of the guide seat is connected to a connecting seat.

[0009] Preferably, both side edges of the liquid inlet pipe and the liquid outlet pipe are provided with fixing seats, and upper and lower sides of the fixing seats are provided with limiting sleeves opposite to each other.

[0010] Preferably, the inner wall of the limiting sleeve is connected with a connecting block, and the connecting block is butt-connected and plugged into the interior of the fixing seat, and a guide rod passes through the middle of the connecting block.

[0011] Preferably, a spring is sleeved on the outer side of the guide rod, and two ends of the spring are respectively connected to the connecting block and the fixing seat.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the externally adjustable pre-tightened ball valve with a sampling structure can move the sampling box up and down through the cooperation between the push rod and the connecting seat, which is convenient for the sampling of the externally adjustable pre-tightened ball valve, and the telescopic limit sleeve can be used to assist in limiting the docking position to prevent installation deviation, which is convenient for the auxiliary limit installation of the externally adjustable pre-tightened ball valve.

[0013] 1. The externally adjustable pre-tightened ball valve with a sampling structure for exporting is driven by the push rod to drive the connecting seat and the sampling box connected to the output end to move down to the limit position simultaneously. At this time, the liquid inside the liquid inlet pipe can enter the interior of the sampling box from the through grooves on both sides of the sampling box. Then, the push rod is started again to drive the connecting seat and the sampling box to move up to the limit position simultaneously. At this time, the staff can open the sealing cover and insert the sampling tool from the sampling port into the through groove to take out the sample inside the sampling box. The sampling box can be moved up and down by the cooperation between the push rod and the connecting seat for guiding movement, so as to facilitate the export sampling of the externally adjustable pre-tightened ball valve;

[0014] 2. The externally adjustable preloaded ball valve with a sampling structure first pulls the limit sleeves on both sides outward to the limit position, then places the ball valve body at the specified installation position so that the liquid inlet pipe and the installation pipe fit together, and then loosens the pulled limit sleeve. The loosened limit sleeve can automatically reset outward and fit outside the installation position through the elastic force of the spring. By arranging telescopic limit sleeves on both sides of the liquid inlet pipe and the liquid outlet pipe, auxiliary limit can be performed with the docking position to prevent installation deviation, thereby facilitating the auxiliary limit installation of the externally adjustable preloaded ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cutaway structure of the utility model;

[0016] Figure 2 It is a right side structural schematic diagram of the utility model;

[0017] Figure 3 This is a schematic diagram of the main cutaway structure of the sampling tube of the utility model;

[0018] Figure 4 This is a schematic diagram of the top view of the cross-section structure of the sampling tube of the utility model;

[0019] Figure 5 This is a schematic diagram of the main cutaway structure of the liquid inlet pipe of the utility model.

[0020] In the figure: 1. ball valve body; 2. liquid inlet pipe; 3. liquid outlet pipe; 4. ball; 5. valve seat; 6. valve stem; 7. handle; 8. sampling tube; 9. sampling box; 10. through groove; 11. sampling port; 12. sealing cover; 13. connecting seat; 14. push rod; 15. guide groove; 16. guide seat; 17. fixed seat; 18. limit sleeve; 19. connecting block; 20. guide rod; 21. spring. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a technical solution: an externally adjustable pre-tightened ball valve with a sampling structure, comprising a ball valve body 1, a ball 4 and a valve stem 6, wherein a liquid inlet pipe 2 and a liquid outlet pipe 3 are respectively arranged at both ends of the ball valve body 1 from left to right, and a ball 4 is arranged inside the ball valve body 1, a valve seat 5 is installed above the ball valve body 1, a valve stem 6 connected to the ball 4 is penetrated through the middle of the valve seat 5, a handle 7 is connected to the upper end of the valve stem 6, a sampling tube 8 is arranged above the liquid inlet pipe 2, and a sampling box 9 is installed inside the sampling tube 8, through grooves 10 are provided on both sides of the sampling box 9, a sampling port 11 is provided on one side of the sampling tube 8, and a sealing cover 12 is installed inside the sampling port 11.

[0023] A connecting seat 13 is connected to the top of the sampling box 9, and a pushing rod 14 is installed above the sampling box 9; the output end of the pushing rod 14 passes through the sampling box 9 and is connected to the connecting seat 13, and guide grooves 15 are provided on both sides of the inner wall of the sampling tube 8; a guide seat 16 is docked inside the guide groove 15, and the outer end of the guide seat 16 is connected to the connecting seat 13, and the guide seat 16 is symmetrically distributed about the center line of the connecting seat 13, and the guide seat 16 and the guide groove 15 are slidably connected.

[0024] During specific implementation, the push rod 14 is started to drive the connecting seat 13 connected to the output end to move downward, and the moving connecting seat 13 drives the sampling box 9 at the bottom to move downward synchronously. At this time, the downward moving connecting seat 13 also moves stably along the inside of the guide groove 15 through the guide seats 16 connected on both sides until the sampling box 9 is moved down to the limit position. At this time, the liquid inside the liquid inlet pipe 2 can enter the interior of the sampling box 9 from the through grooves 10 on both sides of the sampling box 9, and then the push rod 14 is started again to drive the connecting seat 13 and the sampling box 9 to move upward to the limit position synchronously. At this time, the staff can open the sealing cover 12, and the staff can insert the sampling tool from the sampling port 11 into the through groove 10 to take out the sample inside the sampling box 9. The sampling box 9 can be moved up and down through the cooperation between the push rod 14 and the guiding and moving connecting seat 13, so as to facilitate the extraction and sampling of the externally adjustable pre-tightened ball valve.

[0025] See also Figure 1 , Figure 2 and Figure 5 , both side edges of the liquid inlet pipe 2 and the liquid outlet pipe 3 are provided with a fixed seat 17, and the upper and lower sides of the fixed seat 17 are relatively provided with a limit sleeve 18; the inner wall of the limit sleeve 18 is connected with a connecting block 19, and the connecting block 19 is butt-plugged and arranged inside the fixed seat 17, and a guide rod 20 passes through the middle of the connecting block 19; a spring 21 is sleeved on the outer side of the guide rod 20, and the two ends of the spring 21 are respectively connected to the connecting block 19 and the fixed seat 17, and the connecting block 19 forms a telescopic structure with the fixed seat 17 through the spring 21, and the fixed seat 17 is symmetrically distributed about the center line of the liquid inlet pipe 2.

[0026] In specific implementation, when the inlet pipe 2 and the outlet pipe 3 at both ends of the ball valve body 1 are docked and assembled with the designated pipeline, the limit sleeves 18 on both sides are first pulled outward, and the pulled limit sleeves 18 drive the connected connecting blocks 19 to move synchronously. The connecting blocks 19 move inside the fixing seat 17 along the guide rod 20 and squeeze the spring 21 sleeved on the guide rod 20 until the limit sleeve 18 is pulled to the limit position. At this time, the indirection between the two limit sleeves 18 is the largest, and then the ball valve body 1 is corresponding to the designated installation position so that the inlet pipe 2 and the installation pipeline are fitted, and then the pulled limit sleeve 18 is loosened. The loosened limit sleeve 18 can automatically reset outward and fit the outside of the installation position through the elastic force of the spring 21. By arranging a telescopic limit sleeve 18 on both sides of the inlet pipe 2 and the outlet pipe 3, auxiliary limit can be performed with the docking position to prevent installation deviation, thereby facilitating the auxiliary limit installation of the externally adjustable preloaded ball valve.

[0027] To sum up, when using the externally adjustable pre-tightened ball valve with a lead-out sampling structure, firstly, the liquid inlet pipe 2 and the liquid outlet pipe 3 at both ends of the ball valve body 1 are docked and assembled with the designated pipeline, and the valve stem 6 is driven to rotate by turning the handle 7, and the ball 4 connected to the bottom is rotated under the action of the valve stem 6, and the through hole in the middle of the ball 4 is in the same horizontal position as the liquid inlet pipe 2 and the liquid outlet pipe 3. At this time, the ball valve body 1 is in an open state and is performing a conveying operation. Turning the handle 7 in the opposite direction can drive the through hole in the middle of the ball 4 to be in a vertical position with the liquid inlet pipe 2 and the liquid outlet pipe 3. At this time, the ball valve body 1 is in a closed state. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An externally adjustable preloaded ball valve with a sampling structure, comprising a ball valve body (1), characterized in that: The two ends of the ball valve body (1) are respectively provided with a liquid inlet pipe (2) and a liquid outlet pipe (3), and a ball (4) is arranged inside the ball valve body (1). A valve seat (5) is installed above the ball valve body (1), and a valve stem (6) connected to the ball (4) passes through the middle of the valve seat (5). The upper end of the valve stem (6) is connected to a handle (7). A sampling tube (8) is arranged above the liquid inlet pipe (2), and a sampling box (9) is installed inside the sampling tube (8). Through grooves (10) are provided on both sides of the sampling box (9). A sampling port (11) is provided on one side of the sampling tube (8), and a sealing cover (12) is installed inside the sampling port (11).

2. The externally adjustable preloaded ball valve with a lead-out sampling structure according to claim 1, characterized in that: The top end of the sampling box (9) is connected to a connecting seat (13), and a pushing rod (14) is installed above the sampling box (9).

3. The externally adjustable preloaded ball valve with a lead-out sampling structure according to claim 2, characterized in that: The output end of the push rod (14) passes through the sampling box (9) and is connected to the connecting seat (13), and guide grooves (15) are provided on both sides of the inner wall of the sampling tube (8).

4. The externally adjustable preloaded ball valve with a lead-out sampling structure according to claim 3 is characterized in that: The interior of the guide groove (15) is butted against a guide seat (16), and the outer end of the guide seat (16) is connected to the connecting seat (13).

5. The externally adjustable preloaded ball valve with a lead-out sampling structure according to claim 1, characterized in that: The edges of both sides of the liquid inlet pipe (2) and the liquid outlet pipe (3) are provided with fixing seats (17), and the upper and lower sides of the fixing seats (17) are provided with limiting sleeves (18) opposite to each other.

6. The externally adjustable preloaded ball valve with a lead-out sampling structure according to claim 5, characterized in that: The inner wall of the limiting sleeve (18) is connected to a connecting block (19), and the connecting block (19) is butt-connected and plugged into the interior of the fixing seat (17), and a guide rod (20) passes through the middle of the connecting block (19).

7. The externally adjustable preloaded ball valve with a lead-out sampling structure according to claim 6, characterized in that: A spring (21) is sleeved on the outer side of the guide rod (20), and two ends of the spring (21) are respectively connected to the connecting block (19) and the fixing seat (17).

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