Integrated mud water valve suitable for miniature tube push bench

Abstract

The utility model belongs to the technical field of pipe jacking machines, and particularly discloses an integrated mud water valve suitable for a miniature pipe jacking machine, which comprises a valve body, a valve core, a shaft valve body upper cover, a shaft valve body lower cover and a hydraulic cylinder rotation transmission mechanism. The integrated mud water valve suitable for the miniature tube push bench is small in size, compact in structure, complete in function and capable of achieving free switching between the built-in mud feeding function and the built-out mud feeding function of the miniature tube push bench, increases diversity of the mud feeding functions, and improves the utilization rate of the miniature tube push bench. The integrated mud water valve can be widely applied to slurry balance pipe jacking tunneling construction under various geological conditions, the adaptability of slurry balance pipe jacking machine construction faces to complex working conditions and the later maintenance convenience are effectively improved, and the problems that in the prior art, in a common miniature pipe jacking machine, a slurry system is large in size, and the construction cost is low are solved. The problems that various valves are incomplete in function and cannot be placed in the shell are solved, and the problem that a miniature pipe jacking machine is narrow in space and difficult to machine and assemble is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe jacking machines, and in particular relates to an integrated mud and water valve suitable for a micro pipe jacking machine. Background Art

[0002] With the rapid development of national urban municipal construction, micro-pipe jacking construction that passes through composite formations is being used more and more widely in engineering construction, especially in water and sewage pipelines, gas and natural gas pipelines, power cables, communication cables, and urban old pipeline reconstruction. The various valves of existing small-diameter pipe jacking machines are large in size and single in function, and cannot achieve the mutual switching between internal and external water supply required for composite formation pipe jacking. Moreover, the valves are too large to be installed in the pipe jacking machine, which restricts the development of micro-pipe jacking machines and is not conducive to meeting the mud delivery needs under different working conditions. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art, to provide an integrated mud and water valve suitable for a micro pipe jacking machine, to solve the problems in the prior art of the mud and water system valve being too large in size, having a single function and being incomplete, and to solve the technical problem that the prior art micro pipe jacking cannot be constructed.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] An integrated mud valve suitable for a micro pipe jacking machine, comprising:

[0006] The valve body is a hollow structure, and the outer circumferential surface of the valve body is provided with four through holes. The interior of the valve body forms a valve core cavity connected to the through holes, and the through holes are connected to the water pipe;

[0007] A valve core is provided in the valve core cavity of the valve body, a muddy water cavity is provided inside the valve core, four water inlets and outlets are uniformly distributed on the outer circumferential surface of the valve core and communicate with the muddy water cavity, a valve core shaft 1 is provided on the top of the valve core, and a valve core shaft 2 is provided on the bottom of the valve core;

[0008] A shaft valve body upper cover, which is closed on the upper end of the valve body and allows the valve core shaft of the valve core to extend therethrough;

[0009] A shaft valve body lower cover, which is fitted on the lower end of the valve body and is used for mounting the valve core shaft 2 of the valve core;

[0010] A hydraulic cylinder rotation transmission mechanism includes a hydraulic cylinder support and a spiral swinging oil cylinder installed on the hydraulic cylinder support. The hydraulic cylinder support is installed on the top of the shaft valve body cover. An observation notch is opened on the top of the hydraulic cylinder support. The output end of the spiral swinging oil cylinder passes through the hydraulic cylinder support and is connected to the valve core shaft on the valve core, and drives the valve core to rotate.

[0011] Furthermore, four long grooves are evenly distributed on the inner circumferential surface of the valve core cavity on the valve body, and sealing strips are provided in the long grooves;

[0012] A contact surface is formed between two adjacent water inlets and outlets on the valve core, and the contact surface is in close contact with the sealing strip.

[0013] Furthermore, a large bearing is provided inside the shaft valve body upper cover, and the large bearing is sleeved on the outside of the valve core shaft.

[0014] Furthermore, a small bearing is provided inside the lower cover of the shaft valve body, and the small bearing is sleeved on the outside of the valve core shaft 2.

[0015] Furthermore, the bottom of the shaft valve body upper cover and the top of the shaft valve body lower cover are both provided with a sealing groove, the sealing groove of the shaft valve body upper cover is provided with an upper end face rotating seal, and the sealing groove of the shaft valve body lower cover is provided with a lower end face rotating seal;

[0016] The shaft is sealed between the valve body upper cover and the valve core by an upper end face rotary seal;

[0017] The shaft valve body lower cover and the valve core are sealed by a lower end surface rotary seal.

[0018] Furthermore, the shaft valve body upper cover and the shaft valve body lower cover are both fixed to the valve body by bolt connection.

[0019] Furthermore, the top and bottom of the valve body are both provided with mounting grooves communicating with the valve core cavity;

[0020] The bottom of the shaft valve body upper cover and the top of the shaft valve body lower cover are respectively clamped in the mounting recesses at the top and bottom of the valve body.

[0021] Furthermore, a square shaft is integrally formed on the top of the valve core shaft 1;

[0022] A square hole matching the square shaft is provided at the center of the bottom of the output end of the spiral swing oil cylinder, and the square hole is used for assembling the square shaft.

[0023] Furthermore, a positioning platform is provided below the spiral swing cylinder housing, and the positioning platform is fixed to the top of the hydraulic cylinder support by means of bolt connection.

[0024] Furthermore, the hydraulic cylinder support is fixed to the top of the shaft valve body upper cover by means of bolt connection.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The utility model provides an integrated mud and water valve suitable for a micro pipe jacking machine, which has a small size, compact structure, and complete functions. It can realize the free switching of the mud delivery function inside the micro pipe jacking machine and the mud delivery function outside the machine, thereby increasing the diversity of the mud delivery function. The integrated mud and water valve can be widely used in mud and water balance pipe jacking construction under various geological conditions, effectively improving the adaptability of the mud and water balance pipe jacking machine construction to complex working conditions and the convenience of later maintenance. It solves the problems in the prior art that the mud and water system of ordinary micro pipe jacking machines is large in size, the functions of various valves are incomplete, and they cannot be placed inside the shell. It also solves the problem that the micro pipe jacking machine has a small space and is difficult to process and assemble.

[0027] 2. The utility model provides an integrated mud and water valve suitable for a micro pipe jacking machine, which has a wide range of applications and adopts a compact and exquisite modular structure design, thereby improving the convenience of subsequent repair and maintenance.

[0028] 3. The utility model provides an integrated mud and water valve suitable for a micro pipe jacking machine, which consists of a valve body, a valve core, an upper cover for the shaft valve body, a lower cover for the shaft valve body and a hydraulic cylinder rotating transmission mechanism. The valve core is located in the valve body, the upper cover for the shaft valve body and the lower cover for the shaft valve body respectively cover the upper and lower ends of the valve body, and the hydraulic cylinder rotating transmission mechanism is installed on the top of the upper cover for the shaft valve body; a valve core with the function of controlling the mud circulation flow direction and a valve body with the functions of mud delivery inside the machine and mud delivery outside the machine are adopted. Specifically: when it is necessary to transport mud to the cutter disc of the machine head, the hydraulic cylinder rotating transmission mechanism can be controlled to drive the valve core to rotate, and switch to the mud delivery function inside the machine, so that mud can be transported forward to realize the external circulation function; when it is necessary to transport mud to the mud and water internal circulation inside the machine head, the hydraulic cylinder rotating transmission mechanism can be controlled to drive the valve core to rotate, and switch to the mud delivery function inside the machine, so that mud can be transported directly from the mud inlet pipe to the mud discharge pipe through the valve body. In other words, the valve core is controlled by the hydraulic cylinder rotary transmission mechanism to realize free switching between mud delivery inside the machine and mud delivery outside the machine. When the mud delivery channel inside the machine is opened, the mud is transported to the machine head cutter disc through the mud delivery channel. When the machine needs internal circulation, the mud can be directly transported from the mud inlet pipe to the mud discharge pipe through the valve body. The whole structural design is simple and reasonable, and the operation is convenient and reliable. It can realize free switching between the mud delivery function inside the machine and the mud delivery function outside the machine, increases the diversity of the mud delivery function, and can be widely used in mud and water balance pipe jacking construction under various geological conditions. It effectively improves the adaptability of mud and water balance pipe jacking machine construction to complex working conditions. The compact and compact structural design not only solves the problem of small space and difficult processing and assembly of micro pipe jacking machines, but also improves the convenience of later maintenance.

[0029] 4. In the utility model, the valve body has the function of delivering mud inside and outside the machine. The valve core is a cross-through structure. The valve core has the function of controlling the circulation direction of the mud in the valve body. The rotation of the valve core can realize the free switching of the internal circulation and external circulation of the mud transport inside or outside the machine. The sealing strips arranged on the valve body can realize real-time sealing during internal circulation or external circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0031] Figure 1 It is a structural diagram of the utility model;

[0032] Figure 2 It is a structural explosion diagram of the utility model;

[0033] Figure 3 It is a structural schematic diagram of the valve body of the utility model;

[0034] Figure 4 It is a structural diagram of the valve core of the utility model;

[0035] Figure 5 This is a structural diagram of the shaft valve body upper cover of the utility model;

[0036] Figure 6 This is a structural diagram of the lower cover of the shaft valve body of the utility model;

[0037] Figure 7 This is a structural diagram of the spiral swing cylinder of the utility model;

[0038] Figure 8 It is a structural schematic diagram of the hydraulic cylinder support of the utility model.

[0039] Among them, the accompanying drawings are marked as: 10, valve body; 101, through hole; 102, valve core cavity; 103, water pipe; 4, valve core; 41, mud and water cavity; 42, water inlet and outlet; 43, valve core shaft 1; 44, contact surface; 3, shaft valve body upper cover; 14, shaft valve body lower cover; 1, hydraulic cylinder rotation transmission mechanism; 2, hydraulic cylinder support; 20, spiral swing cylinder; 21, observation notch; 104, long groove; 105, installation sink; 7, sealing clip; 6, large bearing; 11, small bearing; 8, upper end face rotary seal; 12, lower end face rotary seal; 201, positioning platform. DETAILED DESCRIPTION

[0040] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0042] With the rapid development of urban municipal construction in China, micro-pipe jacking construction that passes through composite formations has been increasingly widely used in engineering construction, especially in water and sewage pipelines, gas and oil pipelines, power cables, communication cables, and the reconstruction of old urban pipe networks. The various valves of existing small-diameter pipe jacking machines are large in size and single in function, unable to achieve the switching between internal and external water supply required for composite formation pipe jacking. Moreover, they are too large to fit into the pipe jacking machine, which restricts the development of micro-pipe jacking machines and is not conducive to meeting the mud delivery needs under different working conditions.

[0043] In order to solve the problems of large size, single and incomplete functions of mud and water system valves in existing micro pipe jacking construction, an integrated mud and water valve suitable for micro pipe jacking machine is designed. The valve has the advantages of small size, compact structure and complete functions. It can realize the free switching of the mud delivery function inside the micro pipe jacking machine and the mud delivery function outside the machine, which increases the diversity of the mud delivery function. It can be widely used in the integrated mud and water valve of mud and water balance pipe jacking construction under various geological conditions, effectively improving the adaptability of mud and water balance pipe jacking machine construction to complex working conditions and the convenience of subsequent maintenance.

[0044] like Figures 1 to 3 As shown, an integrated mud and water valve suitable for a micro pipe jacking machine includes a valve body 10, a valve core 4 installed inside the valve body 10, an axis valve body upper cover 3 covering the top of the valve body 10, a shaft valve body lower cover 14 covering the bottom of the valve body 10, and a hydraulic cylinder rotation transmission mechanism 1 installed on the top of the shaft valve body upper cover 3, wherein the hydraulic cylinder rotation transmission mechanism 1 is used to drive the valve core 4 to rotate in the valve body 10.

[0045] See also Figures 2 to 3The valve body 10 is a hollow structure. Four through holes 101 are formed on the outer circumferential surface of the valve body 10. Specifically, a valve core cavity 102 communicating with the through holes 101 is formed inside the valve body 10. The valve core 4 is disposed in the valve core cavity 102 of the valve body 10.

[0046] In addition, a water pipe 103 is connected in the through hole 101, and the other end of the water pipe 103 is used to connect the muddy water inlet and outlet;

[0047] A muddy water cavity 41 is formed inside the valve core 4, and four water inlets and outlets 42 are evenly distributed on the outer circumference of the valve core 4 and communicate with the muddy water cavity 41. A valve core shaft 1 43 is also provided on the top of the valve core 4, and a valve core shaft 2 is provided on the bottom of the valve core 4;

[0048] The inner circumferential surface of the valve core cavity 102 on the valve body 10 is uniformly distributed with four long grooves 104, and a sealing strip 7 is provided in the long grooves 104; a contact surface 44 is formed between two adjacent water inlets and outlets 42 on the valve core 4, and the contact surface 44 is in close contact with the sealing strip 7;

[0049] Specifically, the valve core 4 and the valve body 10 are clearance-fitted, and the contact surface 44 thereof is in close contact with the sealing strip 7;

[0050] Among them, the long groove 104 is located between two adjacent through holes 101; since the four long grooves 104 are evenly distributed on the inner circumferential surface of the valve core cavity 102, assuming that the position of one long groove 104 on the valve core cavity 102 is 0°, the remaining three long grooves 104 are respectively located at 90°, 180°, and 270° positions on the valve core cavity 102, that is, the angle between the line connecting the two adjacent long grooves 104 and the center point of the valve core cavity 102 is 90°; and the valve core 4 is a cylinder, and a contact surface 44 is formed between its adjacent two water inlets and outlets 42, forming a total of four contact surfaces 44, each contact surface 44 respectively contacts the sealing strip 7 in the long groove 104;

[0051] Since the valve core 4 is a cylinder with a cross-shaped center, in the initial state, the contact surface on the valve core 4 contacts the sealing clamp 7. Therefore, when the valve core 4 rotates 0° and 180°, the water inlet and the mud discharge are directly connected, that is, the water enters the mud bin directly through the integrated mud and water valve, and after carrying the mud residue, it directly passes through the integrated mud and water valve under the action of the slurry pump and is then discharged to the ground, realizing the external circulation of the mud and water system; when it is rotated 90° and 270°, the external circulation is directly closed, the valve core 4 blocks the direction of the water inlet, and the water enters the integrated valve and directly enters the mud discharge pipe, thereby realizing the bypass of the internal circulation of the mud and water system. During the pipe jacking construction, it can be switched at any time according to construction needs;

[0052] Among them, since there are four sealing strips 7 and they are evenly distributed on the inner circumferential surface of the valve core cavity 102, that is, the sealing strips 7 are respectively arranged at the right cross position in the valve body 10, no matter whether the valve core 4 rotates in the internal circulation or external circulation position, the valve core 4 is in full contact with the sealing strips 7, ensuring complete sealing and protecting the sealing strips 7 from contact with mud, water and debris. The sealing strips 7 are made of a sealing material with high wear resistance, polytetrafluoroethylene, which ensures that it has both high wear resistance and high strength. Moreover, the sealing strips 7 and the valve core 4 are interference fit, ensuring that they will not loosen and that the internal part will not leak out.

[0053] The sealing strip 10 may include a steel plate and a coating layer covering the outside of the steel plate, wherein the coating layer is made of polytetrafluoroethylene with high wear resistance, and the steel plate is made of ordinary steel plate, thereby ensuring that the sealing strip 10 has both high wear resistance and high strength.

[0054] See also Figures 1 to 6 The shaft valve body upper cover 3 is covered on the upper end of the valve body 10, for the valve core shaft 43 of the valve core 4 to extend therethrough; the shaft valve body lower cover 14 is covered on the lower end of the valve body 10, for the installation of the valve core shaft 2 of the valve core 4;

[0055] A large bearing 6 is provided inside the shaft valve body upper cover 3, and the large bearing 6 is sleeved on the outside of the valve core shaft 1 43; a small bearing 11 is provided inside the shaft valve body lower cover 14, and the small bearing 11 is sleeved on the outside of the valve core shaft 2;

[0056] The bottom of the shaft valve body upper cover 3 and the top of the shaft valve body lower cover 14 are both provided with sealing grooves. The sealing groove of the shaft valve body upper cover 3 is provided with an upper end face rotary seal 8, and the sealing groove of the shaft valve body lower cover 14 is provided with a lower end face rotary seal 12. The shaft valve body upper cover 3 and the valve core 4 are sealed by the upper end face rotary seal 8; the shaft valve body lower cover 14 and the valve core 4 are sealed by the lower end face rotary seal 12.

[0057] In addition, a large bearing 6 and a small bearing 11 are respectively provided inside the shaft valve body upper cover 3 and the shaft valve body lower cover 14. The large bearing 6 and the small bearing 11 connect and fix the shaft valve body upper cover 3, the shaft valve body lower cover 14, and the valve body 10 together, and the valve core 4 rotates inside the valve body 10; the large bearing 6 and the small bearing 11 support the valve core 4 so that it can rotate freely in the valve body 10, reducing resistance;

[0058] The shaft valve body upper cover 3 and the shaft valve body lower cover 14 are both fixed to the valve body 10 by bolt connection.

[0059] The top and bottom of the valve body 10 are both provided with mounting grooves 105 communicating with the valve core cavity 102;

[0060] The bottom of the shaft valve body upper cover 3 and the top of the shaft valve body lower cover 14 are respectively engaged in the mounting recesses 105 at the top and bottom of the valve body 10. Specifically, an annular flange is provided at the bottom of the shaft valve body upper cover 3 and the top of the shaft valve body lower cover 14, and the annular flange is engaged in the mounting recesses 105.

[0061] Specifically, annular sealing grooves can also be opened in the installation grooves 105 at the top and bottom of the valve body 10, and O-rings are set in the annular sealing grooves to further ensure the sealing performance when the shaft valve body upper cover 3 and the shaft valve body lower cover 14 are covered on the top and bottom of the valve body 10.

[0062] See also Figures 1 to 8 The hydraulic cylinder rotation transmission mechanism 1 includes a hydraulic cylinder support 2 and a spiral swing oil cylinder 20 installed on the hydraulic cylinder support 2, wherein the spiral swing oil cylinder 20 adopts a 90° swing oil cylinder assembly, whose model is MLB-H80*90°-22*22 purchased parts, and its structure is a rotary oil cylinder with a cylinder diameter of 80, and the rotation path is 0°~90° alternating reciprocating cycle swing;

[0063] The hydraulic cylinder support 2 is mounted on the top of the shaft valve body cover 3. An observation notch 21 is provided on the top of the hydraulic cylinder support 2 for observing the fit between the square hole at the output end of the spiral swing cylinder 20 and the square shaft.

[0064] The output end of the spiral swing cylinder 20 passes through the hydraulic cylinder support 2 and is connected to the valve core shaft 1 43 on the valve core 4, thereby driving the valve core 4 to rotate. Specifically, the top of the valve core shaft 1 43 is integrally formed with a square shaft. The center position of the bottom of the output end of the spiral swing cylinder 20 is provided with a square hole that matches the square shaft. The square hole is used to assemble the square shaft, that is, the square shaft is assembled into the square hole.

[0065] Through this arrangement, during the rotation of the valve core 4, the valve core 4 is ensured to rotate at an angle of 90°, which just enables the integrated mud valve to produce the movement trajectory required for internal circulation and external circulation, so that the force is evenly and synchronously applied;

[0066] A positioning platform 201 is provided below the housing of the spiral swing cylinder 20, and the positioning platform 201 is fixed to the top of the hydraulic cylinder support 2 by means of bolt connection;

[0067] The hydraulic cylinder support 2 is fixed to the top of the shaft valve body cover 3 by bolt connection. Specifically, bolts can be set in the observation notch 21 to fix the hydraulic cylinder support 2 to the top of the shaft valve body cover 3;

[0068] A square hole is provided at the center of the lower part of the spiral swing cylinder 20 for assembling a square shaft. There are two G1 / 4" A / B oil ports in the middle of the cylinder body of the spiral swing cylinder 20 for alternating oil inlet and outlet. The working principle of the spiral swing cylinder 20 is as follows: when the hydraulic oil enters from port A, driven by pressure, the inner shaft of the spiral swing cylinder 20 performs a circular motion with a motion trajectory of 0° to 90°, and enters port B for pressure relief; when the hydraulic oil enters from port B, driven by pressure, the inner shaft of the cylinder performs a circular motion with a motion trajectory of 90° to 0°, and enters port A for pressure relief, thereby forming a reciprocating cycle motion.

[0069] There is a square hole at the lower part of the inner shaft of the spiral swing cylinder 20. This square hole cooperates with the square shaft on the valve core shaft 43 on the upper part of the valve core 4, driving the valve core 4 to make a 90° reciprocating rotation in the valve body 10, changing the flow direction of the water entering the water inlet pipe. The valve core 4 rotates 90°, which is exactly the motion trajectory required for the integrated mud and water valve to generate internal circulation and external circulation.

[0070] The utility model provides an integrated mud and water valve suitable for a micro pipe jacking machine, comprising a valve body 10, a valve core 4 installed inside the valve body 10, an axial valve body upper cover 3 covering the top of the valve body 10, a axial valve body lower cover 14 covering the bottom of the valve body 10, and a hydraulic cylinder rotation transmission mechanism 1 installed on the top of the axial valve body upper cover 3, wherein the hydraulic cylinder rotation transmission mechanism 1 is used to drive the valve core 4 to rotate in the valve body 10.

[0071] At the top of the valve body 10 is the hydraulic cylinder rotary transmission mechanism 1, which is a 90° swing cylinder assembly with the model number MLB-H80*90°-22*22. The hydraulic cylinder rotary transmission mechanism 1 is fixed to the shaft valve body cover 3 and provides the power source for the rotation of the valve core 4. The shaft valve body cover 3 can be fixed to the lower valve body 10 with hexagon socket screws.

[0072] The valve body 10 has a valve core 4 inside. The hydraulic rotary transmission mechanism 1 drives the valve core 4 to rotate in the valve body 10. The valve core 4 is a cylinder with a cross-shaped center. The valve body 10 has the functions of sending mud inside the machine and sending mud outside the machine. The valve core 4 has the function of controlling the flow direction of the mud circulation in the valve body 10. The rotation of the valve core 4 realizes the free switching of the internal circulation and external circulation of the mud transport inside or outside the machine.

[0073] The four sealing strips 7 of the valve body 10 can achieve real-time sealing during internal or external circulation. Below the valve body 10 is the shaft valve body lower cover 14, which can be fixed to the valve body 10 by screws. The shaft valve body upper cover 3 and the shaft valve body lower cover 14 are both equipped with bearings to support and fix the normal rotation of the valve core 4.

[0074] Since the space inside the micro pipe jacking machine is small, and the mud and water system function of the pipe jacking machine requires the external circulation direct and the internal circulation bypass to be switched at any time, the valves commonly used at present are large in size and single in function, and cannot be used to complete the basic functions of the mud and water system. They cannot be placed in the shell of the micro pipe jacking machine, which is a bottleneck of the micro pipe jacking. The integrated mud and water valve provided by the utility model has a small size, compact structure, and complete functions. It can realize the free switching of the mud delivery function inside the micro pipe jacking machine and the mud delivery function outside the machine, and can be placed in the shell of the micro pipe jacking machine. The whole structural design is simple and reasonable, the operation is convenient and reliable, and the adaptability is wide. It can be widely used in mud and water balance pipe jacking construction under various geological conditions, effectively improving the adaptability of mud and water balance pipe jacking machine construction to complex working conditions. The compact and exquisite modular structural design improves the convenience of later maintenance.

[0075] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0076] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. An integrated mud valve suitable for a micro pipe jacking machine, characterized in that: include: A valve body (10), wherein the valve body (10) is a hollow structure, and four through holes (101) are formed on the outer circumferential surface of the valve body (10). A valve core cavity (102) connected to the through holes (101) is formed inside the valve body (10), and a water pipe (103) is connected to the through holes (101); A valve core (4), the valve core (4) being arranged in a valve core cavity (102) of the valve body (10), a muddy water cavity (41) being provided inside the valve core (4), four water inlets and outlets (42) being uniformly distributed on the outer circumferential surface of the valve core (4) and being communicated with the muddy water cavity (41), a valve core shaft 1 (43) being provided at the top of the valve core (4), and a valve core shaft 2 being provided at the bottom of the valve core (4); A shaft valve body upper cover (3), the shaft valve body upper cover (3) covers the upper end of the valve body (10) and allows the valve core shaft (43) of the valve core (4) to extend therethrough; A shaft valve body lower cover (14), the shaft valve body lower cover (14) covers the lower end of the valve body (10) and is used for installing the valve core shaft 2 of the valve core (4); A hydraulic cylinder rotation transmission mechanism (1) includes a hydraulic cylinder support (2) and a spiral swing oil cylinder (20) mounted on the hydraulic cylinder support (2); the hydraulic cylinder support (2) is mounted on the top of the shaft valve body upper cover (3); an observation notch (21) is provided on the top of the hydraulic cylinder support (2); the output end of the spiral swing oil cylinder (20) passes through the hydraulic cylinder support (2) and is connected to a valve core shaft (43) on the valve core (4), thereby driving the valve core (4) to rotate.

2. The integrated mud valve for a micro pipe jacking machine according to claim 1, characterized in that: Four long grooves (104) are evenly distributed on the inner circumferential surface of the valve core cavity (102) on the valve body (10), and sealing strips (7) are provided in the long grooves (104); A contact surface (44) is formed between two adjacent water inlets and outlets (42) on the valve core (4), and the contact surface (44) is in close contact with the sealing strip (7).

3. The integrated mud valve suitable for a micro pipe jacking machine according to claim 1, characterized in that: A large bearing (6) is provided inside the shaft valve body upper cover (3), and the large bearing (6) is sleeved on the outside of the valve core shaft (43).

4. The integrated mud valve for a micro pipe jacking machine according to claim 1, characterized in that: A small bearing (11) is provided inside the shaft valve body lower cover (14), and the small bearing (11) is sleeved on the outside of the valve core shaft.

5. The integrated mud valve for a micro pipe jacking machine according to claim 1, characterized in that: The bottom of the shaft valve body upper cover (3) and the top of the shaft valve body lower cover (14) are both provided with sealing grooves, an upper end face rotary seal (8) is provided in the sealing groove of the shaft valve body upper cover (3), and a lower end face rotary seal (12) is provided in the sealing groove of the shaft valve body lower cover (14); The shaft valve body upper cover (3) and the valve core (4) are sealed via an upper end surface rotary seal (8); The shaft valve body lower cover (14) and the valve core (4) are sealed via a lower end surface rotary seal (12).

6. The integrated mud valve suitable for a micro pipe jacking machine according to claim 1, characterized in that: The shaft valve body upper cover (3) and the shaft valve body lower cover (14) are both fixed to the valve body (10) by bolt connection.

7. The integrated mud valve for a micro pipe jacking machine according to claim 1, characterized in that: The top and bottom of the valve body (10) are both provided with mounting grooves (105) communicating with the valve core cavity (102); The bottom of the shaft valve body upper cover (3) and the top of the shaft valve body lower cover (14) are respectively engaged in the mounting recesses (105) at the top and bottom of the valve body (10).

8. The integrated mud and water valve suitable for a micro pipe jacking machine according to claim 1, characterized in that: The top of the valve core shaft (43) is integrally formed with a square shaft; A square hole matching the square shaft is provided at the center of the bottom of the output end of the spiral swing oil cylinder (20), and the square hole is used for assembling the square shaft.

9. The integrated mud and water valve suitable for a micro pipe jacking machine according to claim 1, characterized in that: A positioning platform (201) is provided below the housing of the spiral swing oil cylinder (20), and the positioning platform (201) is fixed to the top of the hydraulic cylinder support (2) by means of bolt connection.

10. The integrated mud and water valve suitable for a micro pipe jacking machine according to claim 1, characterized in that: The hydraulic cylinder support (2) is fixed to the top of the shaft valve body upper cover (3) by means of bolt connection.

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