Pipe connecting mechanism

Abstract

The utility model relates to the field of threaded connector devices, in particular to a pipe connecting mechanism which comprises a threaded connector and further comprises a quick connector connected to the threaded connector in a threaded mode, the quick connector comprises a shell, the shell is in a short pipe shape, rectangular grooves are symmetrically formed in the side wall of the shell, the rectangular grooves penetrate in the radial direction of the shell, and the rectangular grooves are connected with the threaded connector in a threaded mode. A rectangular groove is formed in the shell, an anti-disengaging piece is connected in the rectangular groove in a sleeved mode, one end of the anti-disengaging piece is rotationally connected with the edge of the rectangular groove, the other end of the anti-disengaging piece is bent towards the interior of the shell in a V shape to form a short edge, the V-shaped bent position of the anti-disengaging piece is connected with the inner wall of the rectangular groove in a clamped mode, and an arc-shaped clamping groove is formed in the tail end of the short edge. According to the device, the anti-disengaging piece for clamping the air pipe is designed on the side face of the quick connector shell, the anti-disengaging piece can be maintained and replaced at any time due to the modular assembly design, and the problems that a quick air connector located on a frequently-acting threaded connector is short in service life and high in maintenance cost are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of threaded interface devices, in particular to a pipe connecting mechanism. Background Art

[0002] The mud discharge valve is a very important equipment in the sewage treatment system of the power plant. The original power plant used a customized solenoid valve with seawater as the control medium. Long-term use is prone to crystallization at the valve core, causing jamming and inability to operate normally. In addition, seawater is highly corrosive to the sealing ring and easily penetrates into the threaded interface, causing circuit short circuit and burning. Therefore, it is gradually replaced by pneumatic solenoid valves.

[0003] The existing pneumatic solenoid valve interface is generally used in conjunction with a quick air connector. After the quick air connector is inserted into the trachea, a ring-shaped anti-slip barb made of a metal sheet is provided inside the quick air connector, so that the trachea can be anti-slipped after being inserted, so that the connection between the trachea and the quick air connector can meet a certain pressure bearing capacity. When the trachea needs to be pulled out, the barb can be pushed out of the trachea wall by pressing the ring part of the port. It is very convenient to use. However, since the core component of the anti-slip structure is very small, and the trachea is repeatedly stamped and depressurized under the opening and closing action of the solenoid valve, it is easy to cause metal fatigue of the barb structure on the inner edge of the metal anti-slip ring, so that its elasticity and strength gradually decrease. After its performance decreases, the trachea will easily fall out of the quick air connector under high pressure. Therefore, the quick air connector is actually a consumable with a relatively limited service life (for power plant sewage valves). In general, only the internal metal anti-slip ring is damaged, but the entire quick air connector needs to be replaced, which obviously causes waste and is not conducive to reducing equipment maintenance costs. Therefore, a connecting pipe mechanism is proposed. Utility Model Content

[0004] In view of the problems of short service life and high maintenance cost of the quick air joint on the threaded interface of the frequently-operating pneumatic solenoid valve mentioned above or in the prior art, the present utility model is proposed.

[0005] Therefore, the purpose of the utility model is to provide a pipe connecting mechanism.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a pipe connecting mechanism, including a threaded interface, and also including a quick connector threadedly connected to the threaded interface, the quick connector including a shell, and the shell is in the shape of a short tube, the side wall of the shell is symmetrically provided with rectangular grooves, the rectangular grooves penetrate the shell radially, and an anti-slip plate is sleeved in the rectangular groove, one end of the anti-slip plate is rotatably connected to the edge of the rectangular groove, and the other end of the anti-slip plate is bent in a V-shape with a short side toward the inside of the shell, and the V-shaped bend of the anti-slip plate is clamped with the inner wall of the rectangular groove, and an arc-shaped clamping groove is provided at the end of the short side.

[0007] As a preferred solution of the pipe connecting mechanism of the utility model, the outer wall of the shell is provided with a rectangular frame at the edge of the rectangular groove, and one end of the frame is provided with a strip groove for avoiding air, and fixing ears are provided at both ends of the strip groove, and a round pin is inserted between the fixing ears.

[0008] As a preferred solution of the pipe connecting mechanism of the utility model, a positioning slot is provided on the inner wall of one end of the rectangular slot away from the strip slot, and the long sides on both sides of the positioning slot are rounded, and the V-shaped bend of the anti-slip piece is matched and connected in the positioning slot.

[0009] As a preferred solution of the pipe connecting mechanism of the utility model, wherein: the end of the anti-slip plate away from the short side is bent and provided with an arc-shaped curled edge, and the curled edge is sleeved in the strip groove and placed between the fixing ears at both ends of the strip groove, the round pin passes through the curled edge, and the two ends of the round pin are interference fit with the fixing ears.

[0010] As a preferred solution of the pipe connecting mechanism of the utility model, the short side of the anti-slip sheet is bent to the side opposite to the curling edge, and the radius of the arc groove of the short side is larger than the interface radius of the shell.

[0011] As a preferred solution of the pipe connecting mechanism of the utility model, a connecting seat is stamped in the middle of the anti-slip plate from the short side to the curled side, and the side profile of the connecting seat is R-shaped, and a pair of connecting seats are symmetrically arranged with respect to the anti-slip plate.

[0012] As a preferred solution of the pipe connecting mechanism of the utility model, wherein: the housing is provided with retaining springs at the rectangular grooves on both sides, and the retaining springs are made by bending elastic metal strips.

[0013] As a preferred solution of the pipe connecting mechanism of the utility model, wherein: the middle part of the retaining spring passes through the top of the connecting seat, and one end of the retaining spring is continuously bent to provide a first folded edge, a second folded edge and a third folded edge, the two ends of the retaining spring are symmetrically arranged with each other, and the first folded edge is vertically bent on both sides of the frame, and the second folded edge is arranged at the end of the round pin along the radial direction of the round pin.

[0014] As a preferred solution of the pipe connecting mechanism of the utility model, wherein: both sides of the frame are provided with plug holes, and the axial bending of the third folded edge parallel to the round pin is matched and plugged into the plug hole.

[0015] As a preferred solution of the pipe connecting mechanism of the utility model, a sealing ring is provided on the inner wall of the shell.

[0016] The beneficial effects of the pipe connecting mechanism of the utility model: the anti-slip plate of the device for clamping the air pipe is designed on the side of the quick connector shell, and the anti-slip plate adopts a modular assembly design and can be maintained and replaced at any time, which effectively solves the problems of short service life and high maintenance cost of the quick air connector on the threaded interface of the frequently operating pneumatic solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of the connecting pipe mechanism.

[0019] Figure 2 It is a schematic diagram of the quick connector structure of the connecting pipe mechanism.

[0020] Figure 3 It is a cross-sectional view of the quick connector structure of the connecting pipe mechanism.

[0021] Figure 4 This is a cross-sectional view of the shell structure of the quick connector of the connecting pipe mechanism.

[0022] Figure 5 This is a cross-sectional view of the anti-slip structure of the quick connector of the connecting pipe mechanism. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] Example 1, reference Figure 1 to Figure 5, which is the first embodiment of the utility model. This embodiment provides a pipe connecting mechanism, which solves the problems of short service life and high maintenance cost of the quick air joint on the threaded interface 100 of the frequently operated pneumatic solenoid valve. It includes a threaded interface 100, and also includes a quick connector 200 threadedly connected to the threaded interface 100. The quick connector 200 includes a shell 201, an inner wall of the shell 201 is provided with a sealing ring 205, and the shell 201 is in a short tube shape. The side wall of the shell 201 is symmetrically provided with rectangular grooves 201a, the rectangular groove 201a penetrates radially of the shell 201, and a locking plate 202 is sleeved in the rectangular groove 201a, one end of the locking plate 202 is rotatably connected to the edge of the rectangular groove 201a, and the other end of the locking plate 202 is V-shaped bent to the inside of the shell 201 with a short side 202a, and the V-shaped bending part of the locking plate 202 is clamped with the inner wall of the rectangular groove 201a, and the end of the short side 202a is provided with an arc-shaped clamping groove 202b.

[0025] The difference between the quick connector 200 of the device and the conventional quick air connector on the market is that the annular metal anti-slip piece 202 of the conventional quick air connector is built into the connector, and the design does not take into account the replacement of the annular metal anti-slip piece 202 after it is damaged. The quick connector 200 provided by the utility model has an anti-slip piece 202 for clamping the side wall of the air pipe designed in the rectangular groove 201a on the side of the shell 201, and the anti-slip piece 202 adopts a modular assembly design and can be replaced at any time.

[0026] Its working method is to Figure 2 Taking the perspective as an example, the trachea is inserted from the left end interface along the bending direction of the short side 202a of the anti-slip sheet 202 until the trachea is plugged in place and the sealing ring 205 is sleeved between the inner wall of the shell 201 and the outer wall of the trachea. When the air pressure in the trachea increases, there is a tendency to withdraw the trachea to the outside of the air joint. At this time, the trachea moves in the opposite direction of the bending direction of the short side 202a, and because the top of the anti-slip sheet 202 conflicts with the inner wall of the rectangular groove 201a, the arc groove 202b of the short side 202a squeezes the outer wall of the trachea at a smaller angle, and because the hardness of the trachea material used in the pneumatic component is lower than that of the anti-slip sheet 202. The anti-slip sheet 202, therefore, the edge of the short side 202a will sink into the outer wall of the trachea due to the extrusion force, providing sufficient support for the trachea and preventing the trachea from detaching from the shell 201 outward, wherein the arc-shaped slot 202b is designed to increase the contact range between the short side 202a and the trachea to avoid cutting the outer wall of the trachea due to excessive local pressure; when the trachea needs to be removed, the anti-slip sheet 202 needs to be pushed toward the outside of the shell 201 to unlock the trachea. This function needs to be used in conjunction with the retaining spring 204. Please refer to Example 3 for details. For the specific assembly method of the anti-slip sheet 202 and the shell 201, please refer to Example 2.

[0027] In summary, the anti-slip plate 202 for clamping the air pipe of the device is designed on the side of the quick connector 200 shell 201, and the anti-slip plate 202 adopts a modular assembly design and can be maintained and replaced at any time, effectively solving the problems of short service life and high maintenance cost of the quick air connector on the threaded interface 100 of the frequently operated pneumatic solenoid valve.

[0028] Example 2, reference Figure 3 and Figure 4 , which is the second embodiment of the utility model. Different from the previous embodiment, this embodiment provides a stopper 202 of the connecting tube mechanism, which cooperates with the groove on the shell 201 to achieve the purpose of stopping the inserted trachea from falling off. It includes: the outer wall of the shell 201 is provided with a rectangular frame 201b at the edge of the rectangular groove 201a, and one end of the frame 201b is provided with a strip groove 201c for avoiding air, and both ends of the strip groove 201c are provided with fixing ears 201d, and a round pin 203 is inserted between the fixing ears 201d, and the inner wall of the end of the rectangular groove 201a away from the strip groove 201c is provided with a positioning card groove 201e, and the positioning card groove 20 The long sides of both sides of 1e are set to be rounded, and the V-shaped bending part of the anti-slip sheet 202 is matched and clamped in the positioning groove 201e, and the end of the anti-slip sheet 202 away from the short side 202a is bent and provided with an arc-shaped curling edge 202c, and the curling edge 202c is sleeved in the strip groove 201c and placed between the fixing ears 201d at both ends of the strip groove 201c, the round pin 203 passes through the curling edge 202c, and the two ends of the round pin 203 are interference fit with the fixing ears 201d, the short side 202a of the anti-slip sheet 202 is bent to the side opposite to the curling edge 202c, and the radius of the arc-shaped slot 202b of the short side 202a is larger than the interface radius of the shell 201.

[0029] The anti-slip sheet 202 of the device is pressed into the rectangular groove 201a when in use, and the anti-slip sheet 202 needs to be pulled out of the rectangular groove 201a when unlocking, so one end of the anti-slip sheet 202 is bent into a curling edge 202c, and is rotatably connected to the housing 201 by inserting a round pin 203, so as to facilitate the use and operation of the anti-slip sheet 202;

[0030] When the anti-slip sheet 202 of the device is working, the short side 202a squeezes the side wall of the trachea. Similarly, the side wall of the trachea will also give the anti-slip sheet 202 a component force to deflect toward the outside of the shell 201 by squeezing the short side 202a. Obviously, this will cause the anti-slip sheet 202 to detach from the trachea and become ineffective. Therefore, the length of the rectangular groove 201a is designed to be shorter than the length of the anti-slip sheet 202, and a positioning groove 201e is provided at the top bending part of the anti-slip sheet 202 to match the bending arc of the anti-slip sheet 202. Since the anti-slip sheet 202 is elastic, the bent part of the anti-slip sheet 202 can be pressed into the positioning groove 201e by directly squeezing it during assembly. When the trachea is connected to the quick connector 200 and compressed air is introduced, the bent part of the anti-slip sheet 202 conflicts with the inner wall of the positioning groove 201e, thereby avoiding the occurrence of the above-mentioned problem.

[0031] The rest of the structure is the same as that of Example 1.

[0032] In summary, the anti-slip sheet 202 of the device cooperates with the groove on the shell 201 to effectively achieve the purpose of preventing the inserted trachea from slipping out, and the structure is simple and the effect is stable.

[0033] Example 3, reference Figure 3 to Figure 5 , which is the third embodiment of the utility model. Different from the previous embodiment, this embodiment provides a retaining spring 204 of the connecting pipe mechanism. By designing the retaining spring 204, the round pin 203 can be prevented from falling off, and the retaining spring 204 can also assist in the disassembly and assembly of the anti-slip sheet 202, so as to facilitate the removal of the air pipe from the quick connector 200. It includes: a connecting seat 202d is stamped from the short side 202a to the curling edge 202c in the middle of the anti-slip sheet 202, and the side profile of the connecting seat 202d is R-shaped, and a pair of connecting seats 202d are symmetrically arranged with respect to the anti-slip sheet 202, and the housing 201 is provided with retaining springs at the rectangular grooves 201a on both sides. 204, and the retaining spring 204 is made of bent elastic metal strips, the middle part of the retaining spring 204 passes through the top of the connecting seat 202d, and one end of the retaining spring 204 is continuously bent to provide a first folded edge 204a, a second folded edge 204b and a third folded edge 204c, the two ends of the retaining spring 204 are symmetrically arranged with each other, and the first folded edge 204a is vertically bent on both sides of the frame 201b, the second folded edge 204b is arranged at the end of the round pin 203 along the radial direction of the round pin 203, and the two sides of the frame 201b are provided with sockets 201f, and the third folded edge 204c is bent parallel to the axial direction of the round pin 203 and matched to be plugged into the socket 201f.

[0034] Since the core component of the device, the anti-slip sheet 202, adopts a deflection operation mode for installation or separation, and the connection structure is very simple, and a round pin 203 is directly plugged in, a spring 204 is also designed. The purpose of introducing the spring 204 is that, first, the middle part of the spring 204 is plugged into the R-shaped connecting seat 202d punched out of the anti-slip sheet 202, and the two ends of the spring 204 are bent tightly against the end of the fixing ear 201d and inserted into the insertion hole 201f on the frame 201b, so that the two ends of the spring 204 are aligned with each other. The crimping at both ends of the round pin 203 prevents the round pin 203 from accidentally falling off from the fixing ear 201d. Secondly, when the trachea needs to be removed from the air connector, the retaining spring 204 between the two connecting seats 202d on the anti-slip plate 202 can be hooked or pulled, or a small flat-blade screwdriver can be used to poke outward from this position, so that the anti-slip plate 202 can be easily bent from the middle part and the bent part of the anti-slip plate 202 can be disengaged from the positioning slot 201e, thereby disengaging the short side 202a from the side wall of the trachea. At this time, the trachea can be taken out.

[0035] When the air connector is used again, it is only necessary to press the anti-slip sheet 202 back into the positioning groove. Or when the anti-slip sheet 202 needs to be replaced, the retaining spring 204 is pulled out from the socket 201f on both sides and replaced with a new anti-slip sheet 202 and retaining spring 204.

[0036] The rest of the structure is the same as that of Example 2.

[0037] In summary, the device can prevent the round pin 203 from falling off by designing the retaining spring 204, and can also assist in the disassembly and assembly of the anti-falling plate 202, thereby improving the convenience and stability of the quick connector 200.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pipe connection mechanism, comprising a threaded interface (100), characterized in that: The invention also comprises a quick connector (200) threadedly connected to the threaded interface (100), the quick connector (200) comprising a shell (201), the shell (201) being in the shape of a short tube, the side wall of the shell (201) being symmetrically provided with rectangular grooves (201a), the rectangular grooves (201a) radially penetrating the shell (201), and a stopper (202) being sleeved in the rectangular groove (201a), one end of the stopper (202) being rotatably connected to the edge of the rectangular groove (201a), and the other end of the stopper (202) being bent in a V-shape toward the inside of the shell (201) to form a short side (202a), and the V-shaped bending part of the stopper (202) being clamped with the inner wall of the rectangular groove (201a), and an arc-shaped clamping groove (202b) being provided at the end of the short side (202a).

2. The connecting pipe mechanism according to claim 1, characterized in that: The outer wall of the shell (201) is provided with a rectangular frame (201b) at the edge of the rectangular groove (201a), and one end of the frame (201b) is provided with a strip groove (201c) for avoiding air, and both ends of the strip groove (201c) are provided with fixing ears (201d), and a round pin (203) is inserted between the fixing ears (201d).

3. The connecting pipe mechanism according to claim 2, characterized in that: A positioning slot (201e) is provided on the inner wall of one end of the rectangular slot (201a) away from the strip slot (201c), and both long sides of the positioning slot (201e) are rounded, and the V-shaped bend of the anti-slip sheet (202) is matched and snapped into the positioning slot (201e).

4. The connecting pipe mechanism according to claim 3, characterized in that: The end of the anti-slip sheet (202) away from the short side (202a) is bent and provided with an arc-shaped curling edge (202c), and the curling edge (202c) is sleeved in the strip groove (201c) and placed between the fixing ears (201d) at both ends of the strip groove (201c), and the round pin (203) passes through the curling edge (202c), and the two ends of the round pin (203) are interference-fitted with the fixing ears (201d).

5. The connecting pipe mechanism according to claim 4, characterized in that: The short side (202a) of the anti-slip sheet (202) is bent towards the side opposite to the curling edge (202c), and the radius of the arc-shaped slot (202b) of the short side (202a) is greater than the interface radius of the shell (201).

6. The connecting pipe mechanism according to claim 5, characterized in that: A connection seat (202d) is punched and arranged in the middle of the anti-slip sheet (202) from the short side (202a) to the curling side (202c), and the side profile of the connection seat (202d) is R-shaped, and a pair of the connection seats (202d) are symmetrically arranged with respect to the anti-slip sheet (202).

7. The connecting pipe mechanism according to claim 6, characterized in that: The housing (201) is provided with retaining springs (204) at both sides of the rectangular grooves (201a), and the retaining springs (204) are made by bending elastic metal strips.

8. The connecting pipe mechanism according to claim 7, characterized in that: The middle part of the clamping spring (204) passes through the top end of the connecting seat (202d), and one end of the clamping spring (204) is continuously bent to provide a first folded edge (204a), a second folded edge (204b) and a third folded edge (204c), and the two ends of the clamping spring (204) are symmetrically arranged with each other, and the first folded edge (204a) is vertically bent at both sides of the frame (201b), and the second folded edge (204b) is arranged at the end of the round pin (203) along the radial direction of the round pin (203).

9. The connecting pipe mechanism according to claim 8, characterized in that: Insertion holes (201f) are provided on both sides of the frame (201b), and the third folded edge (204c) is parallel to the axial bend of the round pin (203) and matches and is inserted into the insertion hole (201f).

10. The connecting pipe mechanism according to claim 9, characterized in that: A sealing ring (205) is provided on the inner wall of the housing (201).

Images