CN113087032A

CN113087032A - Pressure relief structure of sewage treatment system

Info

Publication number: CN113087032A
Application number: CN202110344839.7A
Authority: CN
Inventors: 罗洪湖
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-07-09

Abstract

The invention relates to a pressure relief structure of a sewage treatment system, which comprises a sewage treatment box, wherein a fixed supporting cylinder is fixedly inserted and connected onto a top plate of the sewage treatment box, a fixed supporting pipe is fixedly inserted and connected onto a top plate of the fixed supporting cylinder, and the fixed supporting pipe is communicated with an inner cavity of the sewage treatment box; be provided with stop gear (10) in fixed stay tube (3), the setting of stop gear (10) for realize the spacing locking to a sealing piston (4), avoid expend with heat and contract with cold to the influence that a sealing piston (4) brought. According to the invention, through optimizing the structure of the existing pressure relief hole, the optimized pressure relief hole can realize automatic pressure relief, the timeliness and high efficiency of the pressure relief process can be ensured, and meanwhile, the potential safety hazard brought by manual direct operation can be avoided, so that the optimized equipment can achieve the effects of convenience, high efficiency and safe production in the pressure relief process, and therefore, the optimized equipment can be used in the actual using process.

Description

Pressure relief structure of sewage treatment system

Technical Field

The invention relates to the technical field of sewage treatment equipment, in particular to a pressure relief structure of a sewage treatment system.

Background

Current sewage is all accomplished in sewage storage tank at the process of handling, and in sewage treatment process, can produce gas, causes sewage storage tank internal gas pressure too high, and current treatment mode is, and the manual work is opened and is reduced the pressure lid and do the pressure release and handle. However, in the treatment mode, on one hand, manual operation is carried out, so that the problem that pressure cannot be released in time exists, the sewage storage tank is easily damaged, and the service life of the sewage storage tank is shortened; on the other hand, the depressurization operation is performed manually, and since it is performed under high pressure, there is a certain safe wind direction. In order to solve the problems, the invention provides a pressure relief structure of a sewage treatment system.

Disclosure of Invention

(1) Technical problem to be solved

The invention aims to overcome the defects of the prior art, adapt to practical requirements and provide a pressure relief structure of a sewage treatment system so as to solve the technical problems.

(2) Technical scheme

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

a pressure relief structure of a sewage treatment system comprises a sewage treatment box (1), and is characterized in that a fixed support cylinder (2) is fixedly inserted on a top plate of the sewage treatment box (1), a fixed support pipe (3) is fixedly inserted on a top plate of the fixed support cylinder (2), and the fixed support pipe (3) is communicated with an inner cavity of the sewage treatment box (1); a first sealing piston (4) is movably arranged in the fixed supporting tube (3), the lower end of the first sealing piston (4) is fixedly connected with a third supporting spring (8), and the lower end of the third supporting spring (8) is fixedly connected to the upper end face of a second sealing piston (7); the second sealing piston (7) is movably arranged in the fixed supporting tube (3), and the side wall of the fixed supporting tube (3) is provided with a pressure relief hole (5) for playing a role of automatic pressure relief; the fixed supporting tube (3) is internally provided with a limiting mechanism (10), and the limiting mechanism (10) is arranged and used for limiting and locking the first sealing piston (4) and avoiding the influence of expansion with heat and contraction with cold on the first sealing piston (4); the limiting mechanism (10) comprises a moving pipe (101) and a moving support rod (102), the moving pipe (101) is fixedly arranged on the side wall of the moving sealing plate (91), the moving pipe (101) is movably sleeved outside the moving support rod (102), the moving support rod (102) is rotatably arranged on the inner side wall of the fixed support pipe (3), a first spiral groove is formed in the inner side wall of the moving pipe (101), a second spiral groove is formed in the moving support rod (102) and is in threaded connection with the first spiral groove, one end of a second traction steel rope (103) is wound and connected outside the inner side wall of the moving pipe (101), the other end of the second traction steel rope (103) is wound and connected outside the circumference of the rotating support ring (104), an annular support groove (105) is formed in the upper end face of the rotating support ring (104), and a plurality of support balls (106) are arranged in the annular support groove (105) in a sliding manner, the upper end face of the supporting ball (106) is fixedly connected with a fixing rod (107), the upper end of the fixing rod (107) is fixedly connected to the lower end face of the supporting transverse plate (108), two ends of the supporting transverse plate (108) are fixedly arranged on the inner side wall of the fixed supporting tube (3), one ends of two third traction steel ropes (109) are symmetrically wound and connected to the circumference of the rotating supporting ring (104), the other ends of the third traction steel ropes (109) are fixedly connected to the side wall of the fixed supporting block (1010), the fixed supporting block (1010) is fixedly arranged on the outer side wall of the supporting sliding ring (1011), the supporting sliding ring (1011) is movably sleeved outside the supporting transverse plate (108), the supporting transverse plate (108) is externally wound and connected with a fifth supporting spring (1012), and two ends of the fifth supporting spring (1012) are respectively and fixedly connected to the side wall of the supporting transverse plate (108) and the side wall of the supporting sliding ring (1011), the outer top wall of the supporting sliding ring (1011) is fixedly connected with a first L-shaped limiting plate (1013), the first L-shaped limiting plate (1013) is abutted against a second L-shaped limiting plate (1014), and the second L-shaped limiting plate (1014) is fixedly arranged on the lower end face of the first sealing piston (4).

In the scheme, the free end of the first L-shaped limit plate (1013) is fixedly connected with the anti-jamming plate (1015), and the front view of the anti-jamming plate (1015) is in a trapezoid structure.

In the scheme, the shielding mechanism (6) comprises a shielding plate (61) and a plurality of first supporting springs (63), the upper ends of the first supporting springs (63) are fixedly connected to the lower end face of the shielding plate (61), the number of the first supporting springs (63) is provided, the lower ends of the first supporting springs (63) are fixedly connected to the upper end face of a first sealing piston (4), the side wall of the shielding plate (61) is fixedly connected with a transverse bearing plate (64), the lower end face of the transverse bearing plate (64) is fixedly connected with a push rod (65), the push rod (65) is movably inserted into a guide supporting cylinder (66), the guide supporting cylinder (66) is fixedly arranged on the outer top wall of a fixed supporting cylinder (2), the outer side of the push rod (65) is connected with a second supporting spring (67) in a winding manner, and the two ends of the second supporting spring (67) are respectively and fixedly connected to the side wall of the push rod (65) and the upper end face of the guide supporting cylinder (66), the lower end of the pushing rod (65) is fixedly connected with a movable piston (68), the movable piston (68) is movably arranged in a guide supporting cylinder (66), the side wall of the guide supporting cylinder (66) is fixedly inserted with an air duct (69), the air duct (69) is arranged below the movable piston (68), the air duct (69) is also fixedly inserted on the fixed supporting tube (3), and the fixed supporting tube (3) is communicated with the guide supporting cylinder (66) through the air duct (69).

In the scheme, a sealing mechanism (9) is plugged at one end of the air duct (69) positioned in the fixed supporting tube (3) and used for plugging the air duct (69), so that the influence of expansion with heat and contraction with cold on the whole equipment can be effectively prevented; the sealing mechanism (9) comprises a movable sealing plate (91) and a rubber sealing gasket (92), the rubber sealing gasket (92) is fixedly arranged on the side wall of the movable sealing plate (91), the rubber sealing gasket (92) is blocked on the air guide pipe (69), the movable sealing plate (91) is movably inserted into the fixed supporting pipe (3), the lower end of the movable sealing plate (91) extends into the installation cavity (93), the installation cavity (93) is arranged on the fixed supporting pipe (3), a fourth supporting spring (94) is wound and connected outside the movable sealing plate (91), two ends of the fourth supporting spring (94) are respectively and fixedly connected onto the side wall of the movable sealing plate (91) and the top wall of the installation cavity (93), one end of a traction steel rope (95) is fixedly connected to the lower end of the movable sealing plate (91), and the traction steel rope (95) is wound and connected outside a winding shaft (96), establish outside dwang (97) around dead axle (96) fixed cover, and dwang (97) rotate to set up on bracing piece (98), bracing piece (98) are fixed to be set up on the diapire of installation cavity (93), outside the other end activity of a traction steel cable (95) runs through installation cavity (93) to fixed connection is on the lateral wall of No. two sealed pistons (7).

(3) Has the advantages that:

A. according to the invention, through optimizing the structure of the existing pressure relief hole, the optimized pressure relief hole can realize automatic pressure relief, the timeliness and high efficiency of the pressure relief process can be ensured, and meanwhile, the potential safety hazard brought by manual direct operation can be avoided.

B. The combined structure of the fixed supporting tube, the first sealing piston and the pressure relief hole is additionally arranged, the combined structure can realize the effect of automatic pressure relief, and particularly, the first sealing piston can be pushed to move upwards along with the increase of the air pressure in the sewage treatment tank, and the air pressure can be relieved through the pressure relief hole until the first sealing piston moves upwards to cross the pressure relief hole.

C. The invention is additionally provided with the shielding mechanism which is used for shielding and plugging the fixed supporting pipe, so that when the air pressure in the sewage treatment box is not high, the shielding mechanism can plug the upper opening of the fixed supporting pipe, and the problem that a first sealing piston cannot move in the fixed supporting pipe due to the fact that dust or solid impurities enter the fixed supporting pipe can be avoided.

D. The combined structure of the second sealing piston and the third supporting spring is additionally arranged, and the pipe cavity of the fixed supporting pipe is designed into a large pipe cavity and a small pipe cavity, so that the structure and the combined structure are optimized, a power source can be provided for optimized equipment in the process of increasing air pressure, the additional arrangement of the power source can be avoided, and the effect of reducing the production cost is achieved.

E. According to the invention, the sealing mechanism is additionally arranged and used for plugging the air guide tube, and the sealing mechanism plugs the inner pipe orifice of the air guide tube, so that the shielding mechanism can be prevented from being affected by external expansion with heat and contraction with cold in the actual working process, the movement of the shielding mechanism can be ensured and only changed along with the change of air pressure in the sewage treatment tank, and the sealing mechanism can realize linkage along with the movement of the second sealing piston, so that the operation difficulty of equipment can be effectively reduced, and the effect of high-efficiency work is achieved.

F. The limiting mechanism is additionally arranged and used for locking the limiting mechanism, so that the first sealing piston can be prevented from moving under the characteristic of expansion with heat and contraction with cold of external gas, the structural design of the limiting mechanism is reasonable, linkage can be realized with the movement of the sealing mechanism, the operation difficulty of equipment can be effectively reduced, and the effect of high-efficiency work is achieved.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure A of FIG. 2 according to the present invention;

FIG. 4 is a schematic view of a partial front view cutting structure of FIG. 2 according to the present invention;

FIG. 5 is an enlarged view of the structure B in FIG. 4 according to the present invention.

Detailed Description

The invention will be further illustrated with reference to the following figures 1 to 5 and examples:

a pressure relief structure of a sewage treatment system comprises a sewage treatment box 1, a fixed support cylinder 2 is fixedly inserted and connected on a top plate of the sewage treatment box 1, a fixed support tube 3 is fixedly inserted and connected on the top plate of the fixed support cylinder 2, the fixed support tube 3 is communicated with an inner cavity of the sewage treatment box 1, a first sealing piston 4 is movably arranged in the fixed support tube 3, a third support spring 8 is fixedly connected at the lower end of the first sealing piston 4, the lower end of the third support spring 8 is fixedly connected on the upper end surface of a second sealing piston 7, the second sealing piston 7 is movably arranged in the fixed support tube 3, a pressure relief hole 5 is formed in the side wall of the fixed support tube 3 and used for achieving the effect of automatic pressure relief, the pressure relief hole optimized by optimizing the structure of the existing pressure relief hole in the invention not only can realize automatic pressure relief, but also ensures timeliness and high efficiency of the pressure relief process, meanwhile, potential safety hazards caused by manual direct operation can be avoided, so that the optimized equipment can achieve the effects of convenience, high efficiency and safe production in the pressure relief process, and has higher practical value in the actual use process; the combined structure of the fixed supporting tube 3, the first sealing piston 4 and the pressure relief hole 5 is additionally arranged, the combined structure can realize the effect of automatic pressure relief, and particularly, the first sealing piston 4 can be pushed to move upwards along with the increase of the air pressure in the sewage treatment box 1, and the air pressure can be relieved through the pressure relief hole 5 until the first sealing piston 4 moves upwards to cross the pressure relief hole 5; according to the invention, a combined structure of the second sealing piston 7 and the third supporting spring 8 is additionally arranged, and the pipe cavity of the fixed supporting pipe 3 is designed into a large pipe cavity and a small pipe cavity, so that the structure and the combined structure are optimized, a power source can be provided for optimized equipment in the process of increasing air pressure, and thus, the additional arrangement of the power source can be avoided, and the effect of reducing the production cost is achieved.

In this embodiment, the shielding mechanism 6 is disposed above the fixed support tube 3, and is used for shielding the upper end opening of the fixed support tube 3, and preventing sundries from entering the fixed support tube 3, the shielding mechanism 6 includes a shielding plate 61 and a supporting spring 63, the upper end of the supporting spring 63 is fixedly connected to the lower end surface of the shielding plate 61, and the number of the supporting springs 63 is several, the lower end of the supporting spring 63 is fixedly connected to the upper end surface of the sealing piston 4, the lateral wall of the shielding plate 61 is fixedly connected to the transverse supporting plate 64, and the lower end surface of the transverse supporting plate 64 is fixedly connected to the push rod 65, the push rod 65 is movably inserted into the guide support tube 66, and the guide support tube 66 is fixedly disposed on the outer top wall of the fixed support tube 2, the push rod 65 is externally wound and connected to the second supporting spring 67, and the two ends of the second supporting spring 67 are respectively fixedly connected to the lateral wall of the push rod 65 and the upper end surface of the guide support tube 66 The lower end of the pushing rod 65 is fixedly connected with a movable piston 68, the movable piston 68 is movably arranged in a guide supporting cylinder 66, the side wall of the guide supporting cylinder 66 is fixedly inserted with an air duct 69, the air duct 69 is arranged below the movable piston 68, the air duct 69 is also fixedly inserted on the fixed supporting tube 3, and the fixed supporting tube 3 is communicated with the guide supporting cylinder 66 through the air duct 69.

In this embodiment, the lower end of the shielding plate 61 is fixedly connected with the rubber sealing plug 62, and the rubber sealing plug 62 is movably inserted into the fixed supporting tube 3, so that the better plugging effect can be achieved.

In this embodiment, the end of the air duct 69 located in the fixed supporting tube 3 is plugged with a sealing mechanism 9 for plugging the air duct 69, which can effectively prevent the thermal expansion and cold contraction from affecting the whole device, the sealing mechanism 9 includes a movable sealing plate 91 and a rubber sealing pad 92, the rubber sealing pad 92 is fixedly disposed on the side wall of the movable sealing plate 91, and the rubber sealing pad 92 is plugged on the air duct 69, the movable sealing plate 91 is movably plugged on the fixed supporting tube 3, and the lower end of the movable sealing plate 91 extends into the installation cavity 93, the installation cavity 93 is disposed on the fixed supporting tube 3, the movable sealing plate 91 is externally wound with a fourth supporting spring 94, and two ends of the fourth supporting spring 94 are respectively fixedly connected on the side wall of the movable sealing plate 91 and the top wall of the installation cavity 93, the lower end of the movable sealing plate 91 is fixedly connected with one end of a first traction steel, the first traction steel rope 95 is wound and connected outside the winding shaft 96, the winding shaft 96 is fixedly sleeved outside the rotating rod 97, the rotating rod 97 is rotatably arranged on the supporting rod 98, the supporting rod 98 is fixedly arranged on the bottom wall of the mounting cavity 93, the other end of the first traction steel rope 95 movably penetrates out of the mounting cavity 93 and is fixedly connected on the side wall of the second sealing piston 7, the sealing mechanism 9 is additionally arranged in the invention and is used for plugging the air guide pipe 69, and the sealing mechanism 9 is plugged from the inner pipe opening of the air guide pipe 69, so that in the actual working process, the influence of external gas expanded by heat and cold on the shielding mechanism 6 can be avoided, the movement of the shielding mechanism 6 can be ensured, the movement can only change along with the change of the pressure of the sewage treatment box 1, and the linkage of the sealing mechanism 9 can be realized along with the movement of the second sealing piston 7, therefore, the operation difficulty of the equipment can be effectively reduced, and the effect of high-efficiency work is achieved.

In this embodiment, a position-limiting mechanism 10 is disposed in the fixed supporting tube 3, the position-limiting mechanism 10 is disposed to achieve position-limiting locking of the first sealing piston 4 and avoid the influence of thermal expansion and cold contraction on the first sealing piston 4, the position-limiting mechanism 10 includes a moving tube 101 and a moving supporting rod 102, the moving tube 101 is fixedly disposed on the sidewall of the moving sealing plate 91, the moving tube 101 is movably sleeved outside the moving supporting rod 102, the moving supporting rod 102 is rotatably disposed on the inner sidewall of the fixed supporting tube 3, a first spiral groove is disposed on the inner sidewall of the moving tube 101, a second spiral groove is disposed outside the moving supporting rod 102 and is in threaded connection with the first spiral groove, one end of a second traction steel cable 103 is wound outside the moving supporting rod 102, the other end of the second traction steel cable 103 is wound outside the circumference of the rotating supporting ring 104, an annular supporting groove 105 is disposed on the upper end surface of the rotating supporting, a plurality of supporting balls 106 are arranged in the annular supporting groove 105 in a sliding manner, a fixing rod 107 is fixedly connected to the upper end face of the supporting ball 106, the upper end of the fixing rod 107 is fixedly connected to the lower end face of a supporting transverse plate 108, two ends of the supporting transverse plate 108 are fixedly arranged on the inner side wall of the fixed supporting tube 3, one ends of two third traction steel ropes 109 are symmetrically wound and connected to the circumference of the rotating supporting ring 104, the other ends of the third traction steel ropes 109 are fixedly connected to the side wall of a fixed supporting block 1010, the fixed supporting block 1010 is fixedly arranged on the outer side wall of a supporting sliding ring 1011, the supporting sliding ring 1011 is movably sleeved outside the supporting transverse plate 108, a fifth supporting spring 1012 is wound and connected to the supporting transverse plate 108, two ends of the fifth supporting spring 1012 are respectively fixedly connected to the side wall of the transverse plate 108 and the side wall of the supporting sliding ring 1011, and a first L-shaped limiting plate 1013 is, the first L-shaped limiting plate 1013 is abutted against the second L-shaped limiting plate 1014, and the second L-shaped limiting plate 1014 is fixedly arranged on the lower end face of the first sealing piston 4, the limiting mechanism 10 is additionally arranged in the invention, and the limiting mechanism 10 is arranged to lock the limiting mechanism 10, so that the first sealing piston 4 is prevented from moving under the characteristics of expansion with heat and contraction with cold, the structural design of the limiting mechanism 10 is reasonable, and the linkage with the movement of the sealing mechanism 9 can be realized, so that the operation difficulty of the equipment can be effectively reduced, and the effect of high-efficiency work is achieved.

In this embodiment, the free end fixedly connected with anti-sticking board 1015 of L type limiting plate 1013, and the elevation view of anti-sticking board 1015 is the trapezium structure, sets up like this and can play the effect of anti-sticking, specifically, when L type limiting plate 1013 and No. two L type limiting plates 1014 take place the relative motion, can make this motion process, going on that can be more smooth.

The working principle of the invention comprises the following processes:

along with the sewage in the process of being treated in the sewage treatment tank 1, gas can be generated in the sewage treatment tank 1, and the gas can increase the air pressure in the sewage treatment tank 1 due to the existence of the gas;

the increase of the air pressure pushes the second sealing piston 7 to move upwards in the fixed supporting tube 3, the movement of the second sealing piston 7 pulls the first traction steel rope 95 to move, the movement of the first traction steel rope 95 pulls the movable sealing plate 91 to move downwards, the downward movement of the movable sealing plate 91 drives the rubber sealing gasket 92 to move downwards, and the rubber sealing gasket 92 is separated from the air guide tube 69 along with the movement; when the movable sealing plate 91 moves downwards, the movable pipe 101 is driven to move downwards, and since the first spiral groove and the second spiral groove are engaged with each other, therefore, the downward movement of the movable tube 101 can rotate the movable support rod 102, the rotation of the movable support rod 102 can wind the second traction steel rope 103, the movement of the second traction steel rope 103 can drive the rotation support ring 104 to rotate, the rotation of the rotation support ring 104 can wind the third traction steel rope 109, the winding of the third traction steel rope 109 can pull the fixed support block 1010 to move towards the direction close to the rotation support ring 104, and with the movement of the fixed support block 1010, the support sliding ring 1011 and the first L-shaped limit plate 1013 can be driven to move towards the direction close to the rotation support ring 104, so that the first L-shaped limit plate 1013 is separated from the second L-shaped limit plate 1014, and thus the first sealing piston 4 can move in the vertical direction in the fixed support tube 3;

when the gas-liquid separator is arranged, the tube cavity of the fixed supporting tube 3 consists of a large tube cavity and a small tube cavity, the large tube cavity is arranged above the small tube cavity, the large tube cavity is communicated with the small tube cavity, meanwhile, when the gas-liquid separator is arranged, the second sealing piston 7 is movably arranged in the small tube cavity, and the first sealing piston 4 is movably arranged in the large tube cavity, so that the second sealing piston 7 can move into the large tube cavity under the continuous upward movement of the second sealing piston 7, and pressurized gas can pass through the second sealing piston 7 to enter the large tube cavity and enter the gas guide tube 69; the gas entering the gas tube 69 enters the guide support cylinder 66 and pushes the combination of the movable piston 68 and the push rod 65 to move upwards, the upward movement of the push rod 65 drives the shielding plate 61 to move upwards through the transverse support plate 64, the movement of the shielding plate 61 drives the rubber sealing plug 62 to move upwards and separate from the fixed support tube 3, and therefore the first sealing piston 4 can move upwards in the fixed support tube 3; simultaneously, the gas that enters into big lumen can push away a sealed piston 4 upward movement, along with going on of motion, can make a sealed piston 4 the hole bottom wall of crossing pressure release hole 5 at the bottom to make the gas in the sewage treatment case 1 discharge the environment smoothly, thereby play the effect of pressure release, avoid sewage treatment case 1 internal gas pressure too high.

The invention has the beneficial effects that:

according to the invention, through optimizing the structure of the existing pressure relief hole, the optimized pressure relief hole can realize automatic pressure relief, the timeliness and high efficiency of the pressure relief process can be ensured, and meanwhile, the potential safety hazard brought by manual direct operation can be avoided.

The combined structure of the fixed supporting tube 3, the first sealing piston 4 and the pressure relief hole 5 is additionally arranged, the combined structure can realize the function of automatic pressure relief, and particularly, the first sealing piston 4 can be pushed to move upwards along with the increase of air pressure in the sewage treatment box 1, and when the first sealing piston 4 moves upwards to cross the pressure relief hole 5, the air pressure can be relieved through the pressure relief hole 5.

According to the invention, the shielding mechanism 6 is additionally arranged, and the shielding mechanism 6 is used for shielding and plugging the fixed supporting tube 3, so that when the air pressure in the sewage treatment tank 1 is not high, the shielding mechanism 6 can plug the upper opening of the fixed supporting tube 3, and the problem that the first sealing piston 4 cannot move in the fixed supporting tube 3 due to the fact that dust or solid impurities enter the fixed supporting tube 3 can be avoided.

According to the invention, a combined structure of the second sealing piston 7 and the third supporting spring 8 is additionally arranged, and the pipe cavity of the fixed supporting pipe 3 is designed into a large pipe cavity and a small pipe cavity, so that the structure and the combined structure are optimized, a power source can be provided for optimized equipment in the process of increasing air pressure, and thus, the additional arrangement of the power source can be avoided, and the effect of reducing the production cost is achieved.

According to the invention, the sealing mechanism 9 is additionally arranged, the sealing mechanism 9 is arranged for blocking the air guide pipe 69, and the sealing mechanism 9 is blocked from the inner pipe port of the air guide pipe 69, so that the shielding mechanism 6 can be prevented from being affected by external expansion with heat and contraction with cold in the actual working process, the movement of the shielding mechanism 6 can be ensured and only changed along with the change of the air pressure in the sewage treatment tank 1, and the sealing mechanism 9 can realize linkage along with the movement of the second sealing piston 7, so that the operation difficulty of equipment can be effectively reduced, and the effect of high-efficiency working can be achieved.

The limiting mechanism 10 is additionally arranged, the limiting mechanism 10 is arranged and used for locking the limiting mechanism 10, so that the first sealing piston 4 can be prevented from moving under the characteristic of expansion with heat and contraction with cold of external air, the structural design of the limiting mechanism 10 is reasonable, linkage can be realized with the movement of the sealing mechanism 9, the operation difficulty of equipment can be effectively reduced, and the effect of high-efficiency work is achieved.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.

Claims

1. A pressure relief structure of a sewage treatment system comprises a sewage treatment box (1), and is characterized in that a fixed support cylinder (2) is fixedly inserted on a top plate of the sewage treatment box (1), a fixed support pipe (3) is fixedly inserted on a top plate of the fixed support cylinder (2), and the fixed support pipe (3) is communicated with an inner cavity of the sewage treatment box (1); a first sealing piston (4) is movably arranged in the fixed supporting tube (3), the lower end of the first sealing piston (4) is fixedly connected with a third supporting spring (8), and the lower end of the third supporting spring (8) is fixedly connected to the upper end face of a second sealing piston (7); the second sealing piston (7) is movably arranged in the fixed supporting tube (3), and the side wall of the fixed supporting tube (3) is provided with a pressure relief hole (5) for playing a role of automatic pressure relief; the fixed supporting tube (3) is internally provided with a limiting mechanism (10), and the limiting mechanism (10) is arranged and used for limiting and locking the first sealing piston (4) and avoiding the influence of expansion with heat and contraction with cold on the first sealing piston (4); the limiting mechanism (10) comprises a moving pipe (101) and a moving support rod (102), the moving pipe (101) is fixedly arranged on the side wall of the moving sealing plate (91), the moving pipe (101) is movably sleeved outside the moving support rod (102), the moving support rod (102) is rotatably arranged on the inner side wall of the fixed support pipe (3), a first spiral groove is formed in the inner side wall of the moving pipe (101), a second spiral groove is formed in the moving support rod (102) and is in threaded connection with the first spiral groove, one end of a second traction steel rope (103) is wound and connected outside the inner side wall of the moving pipe (101), the other end of the second traction steel rope (103) is wound and connected outside the circumference of the rotating support ring (104), an annular support groove (105) is formed in the upper end face of the rotating support ring (104), and a plurality of support balls (106) are arranged in the annular support groove (105) in a sliding manner, the upper end face of the supporting ball (106) is fixedly connected with a fixing rod (107), the upper end of the fixing rod (107) is fixedly connected to the lower end face of the supporting transverse plate (108), two ends of the supporting transverse plate (108) are fixedly arranged on the inner side wall of the fixed supporting tube (3), one ends of two third traction steel ropes (109) are symmetrically wound and connected to the circumference of the rotating supporting ring (104), the other ends of the third traction steel ropes (109) are fixedly connected to the side wall of the fixed supporting block (1010), the fixed supporting block (1010) is fixedly arranged on the outer side wall of the supporting sliding ring (1011), the supporting sliding ring (1011) is movably sleeved outside the supporting transverse plate (108), the supporting transverse plate (108) is externally wound and connected with a fifth supporting spring (1012), and two ends of the fifth supporting spring (1012) are respectively and fixedly connected to the side wall of the supporting transverse plate (108) and the side wall of the supporting sliding ring (1011), the outer top wall of the supporting sliding ring (1011) is fixedly connected with a first L-shaped limiting plate (1013), the first L-shaped limiting plate (1013) is abutted against a second L-shaped limiting plate (1014), and the second L-shaped limiting plate (1014) is fixedly arranged on the lower end face of the first sealing piston (4).

2. The sewage treatment system pressure relief structure of claim 1, wherein: the free end of the first L-shaped limiting plate (1013) is fixedly connected with a clamping plate (1015), and the front view of the clamping plate (1015) is in a trapezoidal structure.

3. The sewage treatment system pressure relief structure of claim 1, wherein: the shielding mechanism (6) comprises a shielding plate (61) and a plurality of first supporting springs (63), the upper ends of the first supporting springs (63) are fixedly connected to the lower end face of the shielding plate (61), the number of the first supporting springs (63) is provided, the lower ends of the first supporting springs (63) are fixedly connected to the upper end face of the first sealing piston (4), the side wall of the shielding plate (61) is fixedly connected with a transverse bearing plate (64), the lower end face of the transverse bearing plate (64) is fixedly connected with a push rod (65), the push rod (65) is movably inserted into a guide supporting cylinder (66), the guide supporting cylinder (66) is fixedly arranged on the outer top wall of the fixed supporting cylinder (2), the outer part of the push rod (65) is wound with a second supporting spring (67), and the two ends of the second supporting spring (67) are fixedly connected to the side wall of the push rod (65) and the upper end face of the guide supporting cylinder (66) respectively, the lower end of the pushing rod (65) is fixedly connected with a movable piston (68), the movable piston (68) is movably arranged in a guide supporting cylinder (66), the side wall of the guide supporting cylinder (66) is fixedly inserted with an air duct (69), the air duct (69) is arranged below the movable piston (68), the air duct (69) is also fixedly inserted on the fixed supporting tube (3), and the fixed supporting tube (3) is communicated with the guide supporting cylinder (66) through the air duct (69).

4. The sewage treatment system pressure relief structure of claim 1, wherein: one end of the air duct (69) in the fixed supporting tube (3) is plugged with a sealing mechanism (9) for plugging the air duct (69), so that the influence of expansion with heat and contraction with cold on the whole equipment can be effectively prevented; the sealing mechanism (9) comprises a movable sealing plate (91) and a rubber sealing gasket (92), the rubber sealing gasket (92) is fixedly arranged on the side wall of the movable sealing plate (91), the rubber sealing gasket (92) is blocked on the air guide pipe (69), the movable sealing plate (91) is movably inserted into the fixed supporting pipe (3), the lower end of the movable sealing plate (91) extends into the installation cavity (93), the installation cavity (93) is arranged on the fixed supporting pipe (3), a fourth supporting spring (94) is wound and connected outside the movable sealing plate (91), two ends of the fourth supporting spring (94) are respectively and fixedly connected onto the side wall of the movable sealing plate (91) and the top wall of the installation cavity (93), one end of a traction steel rope (95) is fixedly connected to the lower end of the movable sealing plate (91), and the traction steel rope (95) is wound and connected outside a winding shaft (96), establish outside dwang (97) around dead axle (96) fixed cover, and dwang (97) rotate to set up on bracing piece (98), bracing piece (98) are fixed to be set up on the diapire of installation cavity (93), outside the other end activity of a traction steel cable (95) runs through installation cavity (93) to fixed connection is on the lateral wall of No. two sealed pistons (7).