Multifunctional wrench for well chamber

Abstract

The invention provides a multifunctional wrench for a well chamber, including a cylinder and a piston body, wherein three protruding claws are evenly distributed on the circumference of the front end of the cylinder; more than three protruding extrusion cones are evenly distributed on the circumference of the front end surface of the piston body; each extrusion cone on the piston body is located between every two protruding claws at the front end of the cylinder; the side wall of the piston body is provided with a guide protrusion, and the inner wall of the cylinder body is provided with a guide groove matched therewith; the piston rod of the piston body is also hinged with a connecting rod through a pin shaft, and the cylinder wall of the cylinder body is also provided with a connecting rod long hole, the length direction of the connecting rod long hole is parallel to the axis of the piston rod, and the tail end of the connecting rod long hole opens to the tail end surface of the cylinder body, and when the connecting rod rotates around the hinge axis hinged with the piston rod, it can enter the connecting rod groove through the tail end opening of the connecting rod long hole, and the connecting rod can abut against the long hole wall of the connecting rod long hole. The invention can realize the rotation operation of the cover sleeve and the outlet cylinder cover, and the multiple functions of pushing and installing the plugging plate through this ingenious and concise structure.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline engineering, and in particular relates to a multifunctional wrench for a well chamber. Background Art

[0002] In various underground pipeline systems such as water supply, drainage, gas, and heat, valve wells, drain wells, and vent wells are very important nodes. Before personnel go down into the well to install and repair equipment, toxic and harmful gases must be purged and tested. The existing methods and equipment used cannot ensure that the toxic and harmful gases are purged cleanly, and the cover of the well must be opened before purging. It is often inevitable that toxic and harmful gases will leak out when the cover is opened, posing certain safety hazards. Invention content

[0003] In view of this, the present invention provides a solution to the above-mentioned problem and also provides a multifunctional wrench for a well chamber specially used for the solution, characterized in that it comprises a cylinder body and a piston body, and three protruding claws are evenly distributed on the circumference of the front end of the cylinder body.

[0004] Preferably, the front end surface of the piston body is evenly distributed with three or more raised extrusion cones on its circumference.

[0005] Preferably, each extrusion cone on the piston body is located between every two protruding claws at the front end of the cylinder body.

[0006] Preferably, a guide protrusion is fixedly provided on the side wall of the piston body, and a guide groove matching the guide protrusion is provided on the inner wall of the cylinder body.

[0007] Preferably, a limiting portion for preventing the piston from falling out is provided on the front side of the guide groove.

[0008] Preferably, the piston rod of the piston body is also hinged with a connecting rod through a pin shaft, and a connecting rod long hole is also opened in the cylinder wall. The length direction of the connecting rod long hole is parallel to the axis of the piston rod, and the tail end of the connecting rod long hole opens to the tail end surface of the cylinder. When the connecting rod rotates around the hinge axis hinged to the piston rod, it can enter the connecting rod groove through the tail end opening of the connecting rod long hole, and the connecting rod can be against the long hole wall of the connecting rod long hole.

[0009] Preferably, the connecting rod is also equipped with a handle.

[0010] The multifunctional wrench for the well chamber created by the present invention can realize multiple functions such as rotating operation of the cover plate sleeve and the outlet cylinder cover and pushing and installing operation of the plugging plate through the ingenious and concise structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0012] Figure 1 It is a structural schematic diagram of an embodiment of a purge structure taking a square well chamber as an example;

[0013] Figure 2 A schematic diagram of the structure of a square cover plate matching the well body of a square well chamber;

[0014] Figure 3 is a schematic diagram of a cover plate sleeve cover 210 of a cover plate sleeve 200;

[0015] Figure 4 is a schematic diagram of an outlet sleeve cover 340 of an outlet sleeve 330;

[0016] Figure 5 is a schematic diagram of a blocking plate 350;

[0017] Figure 6 It is a three-dimensional schematic diagram of a multifunctional wrench for a well chamber;

[0018] Figure 7 It is a partial cross-sectional schematic diagram of a multifunctional wrench for a well chamber;

[0019] Figure 8 It is a structural schematic diagram of another embodiment of the purge structure taking a square well chamber as an example;

[0020] Fig. 9 A schematic structural diagram of an embodiment of a purge structure taking a circular well chamber as an example;

[0021] Fig.10 A schematic diagram of the structure of a circular cover plate matching the well body of a circular well chamber;

[0022] Fig.11 Schematic diagram of the analysis principle of the jet direction of the jet outlet of the annular aeration pipe. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] The well chamber includes a well body and a cover plate. The well body can be Figure 1 , Figure 8 The square well body indicated by 1 in the figure has a matching cover plate as shown in the figure. Figure 2 The square cover plate shown in 2; the well body can also be Fig. 9 The circular well 1" shown in the figure, the cover plate is as follows Fig.10 The circular cover plate shown is 2”;

[0026] It should be noted that the "purge" in this article is a general term, including the removal and purging of toxic and harmful gases in the well chamber, the cleaning of accumulated water and sludge in the well chamber with a well bottom, and the well chamber with a connected pipeline at the lower end, in order to minimize the toxic and harmful gases in the pipeline from rising to the personnel operating space in the well chamber, and to suppress the gas below, and other functions and needs.

[0027] In order to meet the functional requirements of clearing and purging toxic and harmful gases in the well chamber, the present invention provides an embodiment of a pre-buried well chamber purge structure, such as Figure 1 and Figure 2 As shown, the well body 1 of the well chamber is a square well body, and a pre-buried pipe 320 is pre-buried in the well wall during the well body construction. Figure 1 As shown, a set of pre-buried pipes 320 are respectively pre-buried at two diagonal points of the square well body, and an inlet sleeve 300 is provided at the upper end of each set of pre-buried pipes 320; the whole or part of the inlet sleeve 300 is also pre-buried in the well body 1; the upper end of the inlet sleeve 300 is open, and the lower end has a closed cylinder bottom 310, and the center of the closed cylinder bottom 310 is provided with a through hole, and the upper end of the pre-buried pipe 320 passes through the through hole of the cylinder bottom 310 and extends into the inlet sleeve 300, and the upper end of the pre-buried pipe 320 extending into the inlet sleeve 300 is provided with an internal thread, which can be connected with the pipes of air compressors, vacuum pumps, water pumps and other equipment as needed;

[0028] When not in use, the upper end of the pre-buried pipe 320 is equipped with a rubber plug (not shown in the figure), which can prevent mud and other impurities from entering the pipe during well construction, prevent dust and water when not in use, and prevent the inner thread of the pipe from rusting and affecting the connection;

[0029] The pre-buried pipeline 320 can be a 1-inch stainless steel pipe, or a pipe of other diameters according to the situation. The inlet sleeve 300 can be at least 6 inches in diameter so as to provide more ample operating space in the inlet sleeve 300.

[0030] Correspondingly, the cover plate 2 is provided with a cover plate sleeve 200 corresponding to the inlet sleeve 300. Figure 1 In the embodiment, two inlet sleeves 300 are provided diagonally in the well body. Figure 2 As shown, the cover plate 2 is provided with two cover plate sleeves 200 at corresponding positions; if the corresponding Figure 8 In the embodiment, the cover plate 2 is provided with four cover plate sleeves 200 (omitted in the drawing) at corresponding positions; the cover plate sleeve 200 is opened at both the top and the bottom, and a cover plate sleeve cover 210 is detachably mounted on the upper end of the cover plate sleeve 200; Figure 3As shown, the lower part of the cover plate cylinder cover 210 is provided with an external threaded portion 212, and the upper end of the cover plate sleeve 200 is provided with an internal thread matching therewith. The cover plate cylinder cover 210 is also provided with three opening holes 241 evenly distributed around the circumference, and a special three-claw opening tool is required to unscrew the cover plate cylinder cover 210; the cover plate cylinder cover 210 is made of a hard material so as to have sufficient strength to cope with rolling;

[0031] Preferably, the inner diameter of the cover sleeve 200 is larger than the outer diameter of the inlet sleeve 300. When the inlet sleeve 300 is partially embedded in the well body 1, that is, the upper part of the inlet sleeve 300 protrudes from the upper end surface of the well body, it can cooperate with the lower end of the cover sleeve 200 to play a positioning function for the cover 2.

[0032] The lower end of the pre-buried pipeline 320 is provided with an outlet unit. Figure 1 As shown in the figure, the outlet unit includes an outlet sleeve 330 placed horizontally and pre-buried in the well body, the outlet sleeve 330 has a closed bottom, the lower end of the pre-buried pipe 320 passes through the closed bottom of the outlet sleeve 330 and communicates with the space inside the sleeve, the outlet sleeve 330 faces and extends into the well, and the outlet sleeve cover 340 is fixedly connected to the outlet sleeve by threads, as shown in FIG. Figure 4 As shown, the outlet cylinder cover includes a threaded portion 343 and a cover body portion, and the cover body portion is provided with three outlet through holes 342 evenly distributed around the circumference; when not in use, the outlet cylinder cover is further provided with a plugging plate 350, and the plugging plate 350 is provided with three plugging heads 352 corresponding to the outlet through holes and connected to each other, preferably, the plugging heads 352 are made of elastic material, such as rubber material, so as to be able to fit closely with the hole wall of the corresponding outlet through hole 342 to maintain a sealed connection; preferably, the plate body of the plugging plate 350 is made of hard material, such as a hard plastic plate, so that the three plugging heads 352 can be separated from the outlet through hole 342 as synchronously as possible, or even if they cannot be separated synchronously, they can ensure that all of them are separated;

[0033] When not in use, the plugging head of the plugging plate is used to plug the outlet through hole, which plays a role in dust and water protection for the embedded pipe and the outlet sleeve. When it is necessary to blow off the toxic and harmful gas before construction, there is no need to remove the cover plate of the well chamber. A special opening tool is used to unscrew the cover plate cylinder cover 210 to expose the upper end of the embedded pipe 320 in the inlet sleeve 300. The rubber plug at the upper end of the pipe is removed, and the upper end of the two sets of embedded pipes 320 are respectively connected to the pipeline of the air compressor. By inputting high-pressure air, the plugging head of the outlet sleeve is flushed open, so that the plugging plate and the outlet cylinder cover are separated and fall to the bottom of the well, and then one of the embedded pipes 320 is connected. The upper end pipe port is changed to connect the vacuum pump and the gas detection equipment. Then, one set can be used for blowing and the other set can be used for vacuuming and detection at the same time, so that the toxic and harmful gases can be effectively purged out of the well chamber. If necessary, gas collection equipment can be added to avoid the direct discharge of toxic and harmful gases into the surrounding environment and the impact on the surrounding environment. After the test is qualified, the cover plate is opened and personnel enter the well chamber for construction. When the well chamber construction is completed, the outlet sleeve can be blocked with a blocking plate, and the upper end pipe port of the embedded pipe 320 can be re-blocked with a rubber wire plug. After all personnel have evacuated the well chamber, the cover plate of the well chamber is covered, and the cover plate cylinder cover 210 is screwed on.

[0034] The invention also provides a structural form of a multifunctional wrench for a well chamber, such as Figure 6 and Figure 7 As shown, it includes a cylinder 400 and a piston body 420 in the cylinder, and the front end circumference of the cylinder 400 is uniformly distributed with Figure 3 The cover plate cylinder cover has corresponding protruding claws 441 of the opening through hole 241 shown in the figure, and the three protruding claws 441 extend into the corresponding opening through holes 241 one by one; the cover plate cylinder cover can be unscrewed by rotating the cylinder body;

[0035] The function of the piston body 420 is to push forward, with its front end pushing against the back of the blocking plate, so that the blocking head in front of the blocking plate squeezes into the outlet through hole 342 of the outlet cylinder cover to block it;

[0036] Preferably, the front end surface circumference of the piston body 420 is uniformly distributed with three protruding extrusion cones 421 corresponding to the back position of the plugging head of the plugging plate 350 on the back of the plugging plate 350, that is, each extrusion cone 421 can abut against the back of the plugging head on the plugging plate, so as to better squeeze the plugging head into the outlet through hole 342 of the outlet cylinder cover for sealing; further, the side wall of the piston body 420 is provided with a guide protrusion 422, and the inner wall of the cylinder body 400 is provided with a guide groove 402 matched therewith. At the same time, Figure 5 As shown, the periphery of the blocking plate is provided with three positioning notches 351 corresponding to the protruding claws 441 one by one, as shown in FIG. Figure 4 As shown, the outer periphery of the outlet tube cover 340 is also provided with three positioning grooves 341 corresponding to the protruding claws 441 one by one;

[0037] The blocking plate 350 is placed on the front end of the cylinder 400, and the protruding claws 441 and the positioning recesses 351 are matched one by one to lock the position, and then the protruding claws 441 at the front end of the cylinder are extended into the positioning recesses 341 of the outlet cylinder cover 340, so that the blocking plate 350 is clamped between the cylinder 400 and the outlet cylinder cover 340, and ensures that each extrusion cone 421 and the blocking head can maintain one-to-one alignment when the piston moves forward;

[0038] Furthermore, a limiting portion 4021 is provided on the front side of the guide groove to prevent the piston from falling out;

[0039] Further, if Figure 7 As shown, the piston rod 430 of the piston body is also hinged with a connecting rod 431 through a pin 433, and the connecting rod 431 is also equipped with a handle 432. The cylinder wall 400 is also provided with a connecting rod long hole 401, and the length direction of the connecting rod long hole 401 is parallel to the axis of the piston rod. The tail end of the connecting rod long hole 401 opens to the tail end surface of the cylinder body. When the connecting rod 431 rotates around the hinge axis hinged to the piston rod 430, it can enter the connecting rod groove 401 through the tail end opening of the connecting rod long hole 401, and the connecting rod 431 can abut against the long hole wall of the connecting rod long hole 401. When in Figure 7 In the middle state, the cylinder can be driven by pulling the connecting rod, and when the protruding claw 441 of the cylinder extends into Figure 3 When the cover plate cylinder cover 210 is inserted into the opening through hole 241, the cover plate cylinder cover 210 can be driven by the cylinder to unscrew or screw into the cover plate sleeve 200; and when the protruding claw 441 of the cylinder extends into Figure 4 When the positioning groove 341 of the outlet cylinder cover 340 is engaged, the outlet cylinder cover 340 can be driven by the cylinder body to unscrew and disengage from or screw into the outlet sleeve 330;

[0040] Therefore, the multifunctional wrench for the well chamber can realize the multiple functions of rotating the cover sleeve 200 and the outlet tube cover 340 and pushing and installing the sealing plate through this ingenious and simple structure.

[0041] Further, if Figure 4 As shown, each outlet through hole 342 on the outlet cylinder cover 340 is located between every two positioning grooves 341; accordingly, as shown in Figure 5 As shown, each plugging head 352 on the plugging plate 350 is located between every two positioning notches 351; correspondingly, each extrusion truncated platform 421 on the piston body 420 is located between every two protruding claws 441 at the front end of the cylinder body. This makes the force distribution at each point more balanced and avoids interference.

[0042] In order to clean the accumulated water and sludge on the bottom of the well chamber, the present invention provides another embodiment of the pre-buried well chamber purge structure, such as Figure 8As shown, a set of pre-buried pipes 320' are respectively pre-buried at two diagonal points of the square well body, and an inlet sleeve 300' is provided at the upper end of each set of pre-buried pipes 320'; the whole or part of the inlet sleeve 300' is also pre-buried in the well body 1; the upper end of the inlet sleeve 300' is open, and the lower end has a closed cylinder bottom 310', and the center of the closed cylinder bottom 310' is provided with a through hole, and the upper end of the pre-buried pipe 320' passes through the through hole of the cylinder bottom 310' and extends into the inlet sleeve 300'. The upper end of the pre-buried pipe 320' extending into the inlet sleeve 300' is provided with an internal thread, which can be connected with the pipes of air compressors, vacuum pumps, water pumps and other equipment as needed;

[0043] When not in use, a rubber plug (not shown) is installed at the upper end of the pre-buried pipe 320'.

[0044] The outlet unit connected to the lower end of the pre-buried pipeline 320' is as follows Figure 8 As shown, the outlet unit of one set of pre-buried pipelines 320' is an aeration pipe 350 laid on the upper surface of the well bottom. The arrangement of the aeration pipe 350 can be as follows Figure 8 The cross shape shown can also be other forms; the outlet unit of another set of pre-buried pipes 320' is a drainage pipe 360 ​​laid on the upper surface of the well bottom;

[0045] In this solution, the upper end of the pre-buried pipe 320' connected to the aeration pipe 350 is connected to the pipeline of the air compressor, and the sludge at the bottom of the well is broken up and raised by inputting high-pressure air, and then the sludge is pumped out of the well chamber through the pre-buried pipe 320' connected thereto and the water pump through the drainage pipe 360; the rest of the contents are the same as above and will not be repeated here;

[0046] like Figure 8 As shown, two sets of pre-buried pipes 320' may coexist with the other two sets of pre-buried pipes 320, or only two sets of pre-buried pipes 320' may be pre-buried in the well chamber.

[0047] For the well chamber with pipelines at the lower end, in order to prevent the toxic and harmful gases in the pipeline from rising to the operating space of personnel in the well chamber, the gas below is suppressed, such as Fig. 9 As shown, the lower end of the well body 1" is connected to the pipeline 9. Since the harmful gas in the pipeline 9 is difficult to be completely evacuated in a short time, or even cannot be completely removed for a long time, but the construction time is tight and a long purge window period cannot be provided, the invention provides another purge structure solution, which does not pursue the complete cleaning and removal of toxic and harmful gases, but suppresses the toxic and harmful gases to a greater extent, and isolates the required working space for the operators; Fig. 9 As shown,

[0048] A set of pre-buried pipes 320 are pre-buried in the circular well body 1", and an inlet sleeve 300" is provided at the upper end of the pre-buried pipes 320". The inlet sleeve 300" is also pre-buried in the well body 1" in its entirety or in part. The inlet sleeve 300" is open at the upper end and has a closed cylinder bottom 310" at the lower end. A through hole is provided at the center of the closed cylinder bottom 310", and the upper end of the pre-buried pipe 320" passes through the through hole of the cylinder bottom 310" and extends into the inlet sleeve 300". The upper end of the pre-buried pipe 320" extending into the inlet sleeve 300" is provided with an internal thread, which can be connected to the pipes of equipment such as air compressors, vacuum pumps, and water pumps as needed.

[0049] When not in use, a rubber plug (not shown) is installed at the upper end of the pre-buried pipe 320";

[0050] The outlet unit connected to the lower end of the pre-buried pipeline 320" is as follows Fig. 9 As shown, an annular aeration pipe 370 is laid on the inner wall of the well body, and the jet outlet 371 of the aeration pipe 370 jets toward the well body. Preferably, as shown in FIG. Fig.11 As shown, the jet directions (shown as 373 ) of the jet ports 371 of the aeration pipe 370 deviate from the annular center point 370 of the annular aeration pipe 370 at the same angle, and the jet directions are all located in the same horizontal plane;

[0051] Fig.11 Only six jet ports are used as an example, but in fact, the number is larger and denser, thereby forming a swirling air isolation layer on the plane where the annular aeration pipe 370 is located, which largely inhibits the toxic and harmful gases in the lower pipeline from entering the well chamber space above, thereby making the well chamber space above safer. Even if a small amount of harmful gases rises to the operating space, the operator only needs to wear a gas mask to fully protect himself.

[0052] Fig.10 The structure of the cover plate 2" and its cover plate sleeve 200" and cover plate cylinder cover 210" applicable to the circular well is given; the other contents are the same as above and will not be repeated here;

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional wrench for a well chamber, characterized in that: It includes a cylinder body and a piston body, and three convex claws are evenly distributed on the circumference of the front end of the cylinder body; The front end surface of the piston body is evenly distributed with more than three protruding extrusion cones on the circumference; The piston rod of the piston body is also hinged with a connecting rod through a pin shaft, and a connecting rod long hole is also opened in the cylinder wall. The length direction of the connecting rod long hole is parallel to the axis of the piston rod, and the tail end of the connecting rod long hole opens to the tail end surface of the cylinder. When the connecting rod rotates around the hinge axis hinged to the piston rod, it can enter the connecting rod groove through the tail end opening of the connecting rod long hole, and the connecting rod can be against the long hole wall of the connecting rod long hole.

2. The multifunctional wrench for a well chamber according to claim 1, characterized in that: Each extrusion cone on the piston body is located between each two cam claws at the front end of the cylinder body.

3. The multifunctional wrench for a well chamber according to claim 1, characterized in that: A guide protrusion is fixedly arranged on the side wall of the piston body, and a guide groove matched with the guide protrusion is arranged on the inner wall of the cylinder body.

4. The multifunctional wrench for a well chamber according to claim 3, characterized in that: A limiting portion for preventing the piston from falling out is arranged on the front side of the guide groove.

5. The multifunctional wrench for a well chamber according to claim 1, characterized in that: The connecting rod is also equipped with a handle.

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