CN218645021U - Pipe fitting eccentric orifice slot type self-cleaning anti-blocking elbow mechanism and device thereof - Google Patents
Pipe fitting eccentric orifice slot type self-cleaning anti-blocking elbow mechanism and device thereof Download PDFInfo
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- CN218645021U CN218645021U CN202222305978.1U CN202222305978U CN218645021U CN 218645021 U CN218645021 U CN 218645021U CN 202222305978 U CN202222305978 U CN 202222305978U CN 218645021 U CN218645021 U CN 218645021U
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Abstract
The utility model discloses a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up elbow mechanism and device thereof, include, pipe connector elbow subassembly, including pipe connector elbow main part, the eccentric orfice runner has been seted up to the inside of pipe connector elbow main part, and the upper surface and the right side wall of pipe connector elbow main part have all been seted up to closing circular slot, two it all is linked together with the eccentric orfice runner to close the circular slot, and the front of pipe connector elbow main part is equipped with supplementary spacing subassembly, through setting up eccentric orfice runner and clamping components, can insert the involution ring of hard pipe left end after closing the inside to the circular slot, install the upper surface and the right side wall at pipe connector elbow main part respectively with two hard pipes through clamping components for two hard pipes are linked together through the eccentric orfice runner, because the inner wall has vertical guiding gutter, debris such as scale deposit in the pipeline, cinder are difficult for adhering to on the pipe wall, owing to adopt eccentric design simultaneously, the fluid can carry out the automatic impact clearance to debris, has solved debris and has blockked up and the safety problem that brings in elbow department.
Description
Technical Field
The utility model belongs to the technical field of the pipe connection technique and specifically relates to a pipe fitting eccentric orfice slot type is from clearing up and prevents blockking up elbow mechanism and device thereof.
Background
The elbow refers to a pipe fitting for changing the direction of a pipeline in a pipeline system, the elbow is divided into three types of most common angles of 45 degrees, 90 degrees and 180 degrees according to the angle, and in addition, other abnormal angles such as 60 degrees are included according to the engineering requirement; according to the production process, the method can be divided into welding elbows, stamping elbows, pushing elbows, casting elbows and the like. The elbow is made of cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, nonferrous metal, plastics, etc.
At present, a high-temperature high-pressure steam pipeline drainage elbow for a thermal power plant is often accumulated due to falling off of scales, oxide skins and the like on the inner wall of the pipeline, so that the elbow is blocked, the bearing pressure is over designed and the pipe is exploded, great danger is formed on safety production, improvement is urgently needed, and therefore an eccentric hole groove type self-cleaning anti-blocking elbow connecting device and a device thereof are provided.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments, and some simplifications or omissions may be made in this section as well as in the abstract and the title of the application to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the prior art.
Therefore, the utility model aims to solve the technical problem that present thermal power plant is with the hydrophobic elbow of high temperature high pressure steam conduit often because pipeline inner wall scale deposit, cinder etc. drop and gather here, cause elbow department to block up the problem that makes the super design of bearing pressure and blow out.
In order to solve the technical problem, the utility model provides a following technical scheme: the pipe fitting elbow component comprises a pipe fitting elbow main body, an eccentric hole runner and involutive circular grooves, wherein the pipe fitting elbow main body is internally provided with the eccentric hole runner; clamping component, it includes centre gripping arc board, linkage folded plate, guide block, installation bearing and trapezoidal lead screw, the centre gripping arc board is equipped with two, two the equal longitudinal symmetry of lateral wall of centre gripping arc board is provided with the linkage folded plate, is equipped with the guide block between two upper and lower linkage folded plates, and the right side wall of guide block and linkage folded plate offsets, the linkage folded plate is L type structure, the guide block is T type structure, two symmetry sets up the right side wall in pipe connector elbow main part around the guide block, and the inside wall of two linkage folded plates in the place ahead all is provided with installation bearing, two the inside wall of installation bearing inner ring all is provided with trapezoidal lead screw, two the rear end of trapezoidal lead screw runs through rear linkage folded plate and is equipped with the linkage component.
As a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up an optimal scheme of elbow mechanism, wherein: clamping component still includes the cooperation gear, the cooperation gear is equipped with two, two the cooperation gear all rotates with the right side wall of pipe joint elbow main part to be connected, the top and the below of cooperation gear are equipped with first rack and second rack respectively, two the front end of first rack sets up the inside wall of two linkage folded plates in the front respectively, two the rear end of second rack sets up the inside wall at two linkage folded plates in the rear respectively, first rack and second rack all mesh with the cooperation gear mutually.
As a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up an optimal scheme of elbow mechanism, wherein: the clamping assembly further comprises two lead screw nuts, the two lead screw nuts are respectively sleeved on the outer sides of the two trapezoidal lead screws, the lead screw nuts are arranged on the inner side wall of the rear linkage folded plate, and the two lead screw nuts are respectively provided with a knob at the rear end of each trapezoidal lead screw.
As a pipe fitting eccentric orfice slot type self-cleaning prevents blockking up an optimal selection scheme of elbow mechanism, wherein: the linkage assembly comprises two linkage gears, the two linkage gears are arranged on the outer walls of the circumferences of the two trapezoidal screw rods respectively, and the outer side of each linkage gear is sleeved with a transmission toothed chain.
As a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up an optimal scheme of elbow mechanism, wherein: supplementary spacing subassembly includes spacing latch, spacing latch rotates with the front of pipe connector elbow main part to be connected, the front of pipe connector elbow main part is provided with the elastic sheet, the elastic sheet supports mutually with the left side wall of spacing latch, the top the front end of trapezoidal lead screw runs through the place ahead linkage folded plate and is provided with the ratchet, the tooth end of spacing latch is located inside the tooth's socket of ratchet.
As a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up an optimal scheme of elbow mechanism, wherein: and the right side is provided with a butt-joint ring in the butt-joint circular groove, and the two clamping arc plates are abutted against the right side wall of the butt-joint ring.
As a pipe fitting eccentric orfice slot type self-cleaning prevents blockking up an optimal selection scheme of elbow mechanism, wherein: the lower surface and the left side wall of pipe joint elbow main part all are provided with the worker's type piece, all the array has seted up the mounting hole on the worker's type piece.
As a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up an optimal scheme of elbow mechanism, wherein: the left side wall of the involutory ring is provided with a rubber ring which is propped against the inner wall of the involutory circular groove on the right side.
The utility model has the advantages that: through setting up eccentric orfice runner and clamping components, can insert the inside back to the butt joint circle groove with closing the ring of hard pipe left end, install two hard pipes respectively at the upper surface and the right side wall of pipe joint elbow main part through clamping components, make two hard pipes be linked together through the eccentric orfice runner, because the inner wall has vertical guiding gutter, the scale deposit in the pipeline, debris such as cinder are difficult for adhering to on the pipe wall, simultaneously owing to adopt eccentric design, the fluid can carry out the automatic impact clearance to debris, the safety problem that debris blockked up and bring in elbow department has been solved.
The present invention has been made in view of the above and/or other problems occurring in the prior art.
Therefore, another technical problem to be solved by the present invention is to fix the connecting device of the detachable connecting device for other devices.
In order to solve the technical problem, the utility model provides a following technical scheme: the pipe fitting device comprises an elbow mechanism and a hard pipe, wherein the hard pipe is installed on the right side wall of a closed ring in a butt joint mode.
As a preferred scheme of the pipe fitting device of the utility model, wherein: the circumference outer wall of hard pipe with the surface of centre gripping arc board is laminated mutually, just the centre gripping arc board with the circumference inner wall that hard pipe laminated mutually all has seted up anti-skidding line.
The utility model discloses another beneficial effect: through rotating trapezoidal lead screw and making two sets of linkage folded plate equidistance relative movement around, the centre gripping cambered plate carries out the centre gripping to the hard pipe fixed with lax, makes the installation can be dismantled to the hard pipe, and the hard pipe can be convenient be connected with other equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
fig. 1 is a right side view of the present invention;
fig. 2 is a schematic perspective view of the present invention;
fig. 3 is an enlarged view of the structure of fig. 2 at a;
fig. 4 is a front cut-open perspective view of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, for convenience of illustration, the sectional view showing the device structure will not be enlarged partially according to the general scale, and the schematic drawings are only examples, and should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Furthermore, the appearances of the phrase "one embodiment" or "an embodiment" in this specification are not necessarily referring to the same embodiment, but may also be referring to other embodiments. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1-4, the embodiment provides a pipe fitting eccentric hole slot type self-cleaning anti-blocking elbow mechanism, which includes a pipe fitting elbow component 100, including a pipe fitting elbow main body 101, an eccentric hole runner 102 is provided inside the pipe fitting elbow main body 101, the upper surface and the right side wall of the pipe fitting elbow main body 101 are both provided with involutory circular grooves 103, the two involutory circular grooves 103 are both communicated with the eccentric hole runner 102, and the front of the pipe fitting elbow main body 101 is provided with an auxiliary limiting component 400.
The clamping assembly 200 further comprises two matching gears 206, the two matching gears 206 are arranged, the two matching gears 206 are rotatably connected with the right side wall of the pipe joint elbow main body 101, a first rack 204 and a second rack 205 are arranged above and below the matching gears 206 respectively, the front ends of the two first racks 204 are arranged on the inner side walls of the two linkage folding plates 202 in the front respectively, the rear ends of the two second racks 205 are arranged on the inner side walls of the two linkage folding plates 202 in the rear respectively, and the first racks 204 and the second racks 205 are meshed with the matching gears 206.
The clamping assembly 200 further comprises two lead screw nuts 209, the two lead screw nuts 209 are arranged, the two lead screw nuts 209 are respectively sleeved on the outer sides of the two trapezoidal lead screws 208, the lead screw nuts 209 are arranged on the inner side walls of the rear linkage folded plates 202, the rear ends of the two trapezoidal lead screws 208 are respectively provided with a knob, the two clamping arc plates 201 are respectively abutted against the right side walls of the opposite ring 500, the circumferential inner walls of the two clamping arc plates 201 are respectively provided with anti-slip threads, and the two clamping arc plates 201 are respectively abutted against the circumferential outer wall of the rigid pipe 600;
the knob is held to hand and two trapezoidal screws 208 are rotated, the screw-thread fit of the trapezoidal screw 208 and the screw nut 209 drives the rear linkage folded plate 202 to move towards the direction close to the front linkage folded plate 202, through the arrangement of the first rack 204, the second rack 205 and the matching gear 206, when the second rack 205 moves forwards along with the rear linkage folded plate 202, the meshing transmission of the second rack 205 and the matching gear 206 drives the matching gear 206 to rotate, and then the meshing transmission of the matching gear 206 and the first rack 204 drives the front linkage folded plate 202 to move backwards, so that the front and rear two groups of linkage folded plates 202 move equidistantly and relatively.
Until two centre gripping arc boards 201 all offset with the circumference outer wall of hard pipe 600, carry out the centre gripping to hard pipe 600 and fix, trapezoidal lead screw 208 has the auto-lock nature, can prevent that centre gripping arc boards 201 from taking place not hard up to hard pipe 600's centre gripping is fixed under the elastic action to install hard pipe 600 at the right side wall of pipe joint elbow main part 101.
Example 2
Referring to fig. 1 to 4, the embodiment provides a pipe fitting eccentric hole slot type self-cleaning anti-blocking elbow mechanism, which comprises a linkage assembly 300, wherein the linkage assembly comprises two linkage gears 301, the two linkage gears 301 are respectively arranged on the outer walls of the circumferences of the two trapezoidal screw rods 208, and the outer sides of the two linkage gears 301 are sleeved with a transmission toothed chain 302.
The rubber ring 900 is placed inside the circular joining groove 103, the joining ring 500 at the left end of the hard pipe 600 is inserted into the circular joining groove 103, the joining ring 500 abuts against the rubber ring 900, the rubber ring 900 improves the sealing performance between the joining ring 500 and the circular joining groove 103, water leakage is prevented, then the pipe wall of the hard pipe 600 is clamped and fixed through the clamping assembly 200, the joining ring 500 is prevented from moving out of the circular joining groove 103, the hard pipe 600 is installed on the right side wall of the pipe joint elbow main body 101, and the clamping assembly 200 (not shown in the figure) is correspondingly arranged on the upper surface of the pipe joint elbow main body 101.
Installing another hard pipe 600 on the upper surface of the pipe joint elbow main body 101, so that the two hard pipes 600 are communicated through the eccentric hole flow passage 102; by arranging the I-shaped block 700 and the mounting hole 800, the bolt is screwed into a threaded hole formed in the ground or the wall through penetrating the mounting hole 800 until the head of the bolt abuts against the I-shaped block 700, so that the pipe joint elbow main body 101 can be conveniently mounted on the ground or the wall.
When an operator holds the knob to rotate any one trapezoidal screw 208, the linkage gear 301 on the trapezoidal screw 208 is driven to rotate, the transmission toothed chain 302 drives the linkage gear 301 on the other trapezoidal screw 208 to rotate, and then drives the other trapezoidal screw 208 to synchronously rotate, and when the distance between the front and rear groups of linkage folded plates 202 needs to be adjusted, the operator does not need to synchronously rotate the two trapezoidal screws 208, so that the use is convenient.
Example 3
Referring to fig. 1 to 4, the embodiment provides a pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism and a device thereof, and the mechanism comprises an auxiliary limiting assembly 400, which comprises a limiting latch 402, wherein the limiting latch 402 is rotatably connected with the front surface of a pipe joint elbow main body 101, an elastic sheet 403 is arranged on the front surface of the pipe joint elbow main body 101, the elastic sheet 403 abuts against the left side wall of the limiting latch 402, the front end of an upper trapezoidal screw 208 penetrates through a front linkage folded plate 202 and is provided with a ratchet 401, and the tooth end of the limiting latch 402 is positioned inside the tooth groove of the ratchet 401;
through ratchet 401 and spacing latch 402, rotating trapezoidal lead screw 208 and making two sets of linkage folded plate 202 equidistance relative movement in front and back, centre gripping cambered plate 201 carries out the centre gripping fixed back to hard pipe 600, prevent that trapezoidal lead screw 208 from unexpected antiport under the exogenic action, lead to centre gripping cambered plate 201 to take place not hard up to the centre gripping of hard pipe 600 is fixed, when operating personnel needs antiport trapezoidal lead screw 208, shift out spacing latch 402 from the inside tooth's socket of ratchet 401 earlier, can hold knob antiport trapezoidal lead screw 208.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not have been described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a pipe fitting eccentric orfice slot type is from clearing up prevents blockking up elbow mechanism which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the pipe joint elbow component (100) comprises a pipe joint elbow main body (101), an eccentric hole runner (102) and an involutory circular groove (103);
an eccentric hole runner (102) is formed inside the pipe joint elbow main body (101), involutory circular grooves (103) are formed in the upper surface and the right side wall of the pipe joint elbow main body (101), the two involutory circular grooves (103) are communicated with the eccentric hole runner (102), and an auxiliary limiting assembly (400) is arranged on the front face of the pipe joint elbow main body (101); and (c) a second step of,
the clamping assembly (200) comprises a clamping arc plate (201), a linkage folded plate (202), a guide block (203), a mounting bearing (207) and a trapezoidal screw rod (208);
centre gripping arc board (201) is equipped with two, two the equal longitudinal symmetry of lateral wall of centre gripping arc board (201) is provided with linkage folded plate (202), is equipped with guide block (203) between two upper and lower linkage folded plates (202), and the right side wall of guide block (203) and linkage folded plate (202) offsets, linkage folded plate (202) are L type structure, guide block (203) are T type structure, two symmetry sets up the right side wall at pipe connector elbow main part (101) around guide block (203), and the inside wall of two linkage folded plates (202) in the place ahead all is provided with installation bearing (207), two the inside wall of installation bearing (207) inner ring all is provided with trapezoidal lead screw (208), two the rear end of trapezoidal lead screw (208) runs through rear linkage folded plate (202) and is equipped with linkage subassembly (300).
2. The pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism according to claim 1, characterized in that: clamping assembly (200) still includes cooperation gear (206), cooperation gear (206) are equipped with two, two cooperation gear (206) all rotate with the right side wall of pipe joint elbow main part (101) and are connected, the top and the below of cooperation gear (206) are equipped with first rack (204) and second rack (205) respectively, two the front end of first rack (204) sets up the inside wall of two linkage folded plates (202) in the front respectively, two the rear end of second rack (205) sets up the inside wall at two linkage folded plates (202) in the rear respectively, first rack (204) and second rack (205) all mesh with cooperation gear (206).
3. The pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism according to claim 2, characterized in that: clamping assembly (200) still includes screw-nut (209), screw-nut (209) are equipped with two, two screw-nut (209) cover respectively and establish in the outside of two trapezoidal screws (208), and screw-nut (209) set up the inside wall at rear linkage folded plate (202), two the rear end of trapezoidal screw (208) all is provided with the knob.
4. The pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism according to claim 3, characterized in that: linkage subassembly (300) are including linkage gear (301), linkage gear (301) are equipped with two, two linkage gear (301) set up respectively at the circumference outer wall of two trapezoidal lead screws (208), two the outside cover of linkage gear (301) is equipped with transmission chain gear (302).
5. The pipe fitting eccentric hole groove type self-cleaning anti-clogging elbow mechanism according to claim 3 or 4, characterized in that: the auxiliary limiting assembly (400) comprises limiting latch teeth (402), the limiting latch teeth (402) are connected with the front face of the pipe joint elbow main body (101) in a rotating mode, elastic sheets (403) are arranged on the front face of the pipe joint elbow main body (101), the elastic sheets (403) are abutted to the left side wall of the limiting latch teeth (402), the upper portion of the elastic sheets is arranged above the front end of the trapezoidal screw rod (208) penetrates through the front linkage folded plate (202) and is provided with a ratchet wheel (401), and the tooth end of the limiting latch teeth (402) is located inside a tooth groove of the ratchet wheel (401).
6. The pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism according to claim 5, characterized in that: the right side is equipped with the involutory ring (500) to the inside of involutory circular slot (103), two centre gripping arc board (201) all with the right side wall of involutory ring (500) is supported.
7. The pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism according to claim 6, characterized in that: the lower surface and the left side wall of pipe joint elbow main part (101) all are provided with worker's type piece (700), mounting hole (800) have all been seted up in the array on worker's type piece (700).
8. The pipe fitting eccentric hole groove type self-cleaning anti-blocking elbow mechanism according to claim 7, characterized in that: the left side wall of the involutory ring (500) is provided with a rubber ring (900), and the rubber ring (900) is propped against the inner wall of the involutory circular groove (103) on the right side.
9. A pipe fitting installation comprising the elbow mechanism of any one of claims 6 to 8, wherein: the device also comprises a hard tube (600), wherein the hard tube (600) is installed on the right side wall of the closing ring (500) in a butt joint mode.
10. The plumbing device of claim 9, wherein: the circumference outer wall of stereoplasm pipe (600) with the surface laminating of centre gripping arc board (201) mutually, just centre gripping arc board (201) with the circumference inner wall that stereoplasm pipe (600) laminated mutually has all seted up anti-skidding line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222305978.1U CN218645021U (en) | 2022-08-31 | 2022-08-31 | Pipe fitting eccentric orifice slot type self-cleaning anti-blocking elbow mechanism and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222305978.1U CN218645021U (en) | 2022-08-31 | 2022-08-31 | Pipe fitting eccentric orifice slot type self-cleaning anti-blocking elbow mechanism and device thereof |
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| CN218645021U true CN218645021U (en) | 2023-03-17 |
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| CN202222305978.1U Active CN218645021U (en) | 2022-08-31 | 2022-08-31 | Pipe fitting eccentric orifice slot type self-cleaning anti-blocking elbow mechanism and device thereof |
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| CN (1) | CN218645021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398720A (en) * | 2023-05-31 | 2023-07-07 | 潍坊华宝机械制造有限公司 | Connecting valve for groove pipe fitting |
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2022
- 2022-08-31 CN CN202222305978.1U patent/CN218645021U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116398720A (en) * | 2023-05-31 | 2023-07-07 | 潍坊华宝机械制造有限公司 | Connecting valve for groove pipe fitting |
| CN116398720B (en) * | 2023-05-31 | 2023-08-01 | 潍坊华宝机械制造有限公司 | Connecting valve for groove pipe fitting |
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