CN220749151U

CN220749151U - Fluid pressure regulating assembly, manual pressure regulating valve and automatic pressure regulating valve

Info

Publication number: CN220749151U
Application number: CN202322153676.1U
Authority: CN
Inventors: 陈晓峰; 胡青; 吴杨飞
Original assignee: Suzhou Zhuozhao Dispensing Co Ltd
Current assignee: Suzhou Zhuozhao Dispensing Co Ltd
Priority date: 2023-08-11
Filing date: 2023-08-11
Publication date: 2024-04-09
Anticipated expiration: 2033-08-11

Abstract

The utility model discloses a fluid pressure regulating assembly, comprising: the device comprises a base provided with a liquid inlet and a liquid outlet, wherein the upper end of the base is connected with a guide seat in a sealing manner and forms an upper cavity with the guide seat, the lower end of the base is connected with a supporting seat in a sealing manner and forms a lower cavity with the supporting seat, a second mounting seat is arranged in the lower cavity, a liquid inlet channel is arranged in the base, a plug is arranged between the second mounting seat in the lower cavity and the liquid inlet channel, the lower end of the plug is embedded in a second mounting hole formed in the upper surface of the second mounting seat and is in clearance fit with the inner wall of the second mounting hole, the middle of the plug is provided with a flange part which is outwards in the radial direction, the upper end of the plug is provided with a blocking part, and a spring which is in a compressed state is vertically arranged between the lower surface of the second mounting seat and the supporting seat. The utility model can realize self-adaptive coaxial adjustment between the plug and the liquid inlet channel which are in reciprocating telescopic movement, and avoid stress disturbance caused by eccentric plug.

Description

Fluid pressure regulating assembly, manual pressure regulating valve and automatic pressure regulating valve

Technical Field

The utility model relates to the technical field of dispensing valves, in particular to a fluid pressure adjusting assembly.

Background

The pressure regulating valve can automatically reduce the pressure of fluid after entering to the pressure required by the pipeline work of the next working procedure, can stably maintain the beneficial pressure output by the outlet at a certain value, and is widely applied to various industries. The existing pressure stabilizing valve realizes stable pressure adjustment through the spring pressure adjusting knob when adjusting pressure, but the problem that the knob is loose easily occurs when the structure of the existing spring pressure adjusting knob is used for a long time, so that the pressure adjustment is unstable, and the stability of the output fluid pressure is affected.

When large-size parts such as photovoltaic modules are subjected to gluing operation, a large amount of glue is needed, the glue flow which is output outwards from the inside of the glue supplying unit is large, and final glue outlet pressure and glue outlet quantity are easy to be unstable.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a fluid pressure regulating assembly, which can realize self-adaptive coaxial regulation between a plug and a liquid inlet channel which are in reciprocating telescopic movement, avoid stress disturbance caused by eccentric plug, not only can prolong the service life of the assembly, but also can further ensure the balance and stability of fluid pressure regulation.

In order to solve the technical problems, the utility model adopts the following technical scheme: a fluid pressure regulating assembly comprising: the device comprises a base, a supporting seat, a first mounting seat, a second mounting seat, a vertically extending ejector rod and a connecting rod, wherein the base is respectively provided with a liquid inlet and a liquid outlet;

the base is internally provided with a liquid inlet channel, the upper end of the liquid inlet channel is communicated with the lower cavity, a plug is arranged between a second mounting seat arranged in the lower cavity and the liquid inlet channel, the lower end of the plug is embedded into a second mounting hole formed in the upper surface of the second mounting seat and is in clearance fit with the inner wall of the second mounting hole, the middle part of the plug is provided with a flange part which is radially outwards, the lower surface of the flange part is attached to the upper surface of the second mounting seat, the upper end of the plug is provided with a blocking part, a spring which is in a compressed state is vertically arranged between the lower surface of the second mounting seat and the supporting seat, and when the liquid inlet is in a non-liquid inlet state, the blocking part of the plug is in sealing fit with an outlet at the lower end of the liquid inlet channel, and the liquid outlet channel which is communicated with the lower cavity and the liquid outlet is arranged on one side of the base, which is opposite to the liquid inlet channel.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the blocking part is a hemispherical blocking part.

2. In the scheme, the upper end of the liquid outlet channel, the lower end of which is communicated with the lower cavity, is communicated with the upper cavity.

3. In the above scheme, a connecting pipe is embedded and installed at the lower part of the liquid inlet channel, and the blocking part at the upper end of the blocking head can be embedded into the lower end of the connecting pipe and is tightly matched with the inner wall of the connecting pipe.

4. In the scheme, the inner wall of the upper part of the connecting pipe is in an open conical shape.

5. In the above scheme, the hemispherical blocking part can be tangentially matched with the inner wall of the connecting pipe.

The manual pressure regulating valve comprises a fluid pressure regulating assembly, and further comprises a regulating seat connected with the upper end of the guide seat through threads, a regulating bin is formed between the regulating seat and the guide seat, the upper end of the ejector rod which is in sliding fit with the guide seat extends into the regulating bin and is connected with a regulating block, and an elastic piece in a compression state is arranged between the regulating block and the regulating seat.

The further improved scheme in the technical scheme is as follows:

1. in the scheme, the elastic piece is a heavy-load rectangular spring.

The automatic pressure regulating valve comprises a fluid pressure regulating assembly, and further comprises a cylinder body arranged above the guide seat, a driving cavity is arranged in the cylinder body, the upper end of a piston rod is horizontally arranged in a piston disc in the driving cavity, the lower end of the piston rod extends out of the cylinder body and is connected with the upper end of the ejector rod, an air pipe joint is arranged on the cylinder body and positioned on one side of the piston disc opposite to the piston rod, and the air pipe joint is communicated with the driving cavity in the cylinder body through an air inlet channel.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, a mounting groove is formed in the upper surface of the guide seat, a protruding portion embedded in the mounting groove is arranged in the center of the lower surface of the cylinder body, and the joint of the ejector rod and the piston rod is located in an area surrounded by the protruding portion and the mounting groove.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the utility model relates to a fluid pressure regulating component, a liquid inlet channel is arranged in a base, the lower end of the liquid inlet channel, the upper end of which is communicated with a liquid inlet, is communicated with a lower cavity, a plug is arranged between a second mounting seat and the liquid inlet channel in the lower cavity, the lower end of the plug is embedded into a second mounting hole which is arranged on the upper surface of the second mounting seat and is in clearance fit with the inner wall of the second mounting hole, the middle part of the plug is provided with a flange part which is radially outwards, the lower surface of the flange part is attached to the upper surface of the second mounting seat, the upper end of the plug is provided with a blocking part, a spring which is in a compressed state is vertically arranged between the lower surface of the second mounting seat and a supporting seat, when the plug is in a non-liquid inlet state, the blocking part of the plug is in sealing fit with an outlet at the lower end of the liquid inlet channel, the liquid outlet channel which is arranged on the base and is positioned on one side of the liquid inlet channel opposite to the liquid inlet is provided with a lower cavity and a liquid outlet, fluid entering from the liquid inlet at a certain pressure sequentially flows through the liquid inlet channel and the lower cavity and then is output outwards from the liquid outlet at a smaller pressure through the opening and closing between the blocking part on the plug and the liquid outlet, the balance and stability of the output fluid pressure can be improved, the self-adaptive coaxial adjustment between the plug and the liquid inlet channel which are in reciprocating telescopic movement can be realized through the floating arrangement of the plug, the stress disturbance caused by the eccentricity of the plug is avoided, the service life of the assembly can be prolonged, and the balance and stability of the fluid pressure adjustment can be further ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of a fluid pressure regulating assembly of the present utility model;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged schematic view of FIG. 2 at C;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 5 is an enlarged schematic view of FIG. 4 at D;

FIG. 6 is a schematic diagram of a manual pressure regulating valve of the fluid pressure regulating assembly of the present utility model;

FIG. 7 is a schematic cross-sectional view taken along E-E in FIG. 6;

FIG. 8 is a schematic view of the structure of an automatic pressure regulating valve of the fluid pressure regulating assembly of the present utility model;

fig. 9 is a schematic cross-sectional view taken along line F-F in fig. 8.

In the above figures: 1. a liquid inlet; 2. a liquid outlet; 3. a base; 301. a body portion; 302. an upper sleeve portion; 303. a lower sleeve portion; 4. a guide seat; 401. a mounting groove; 5. a support base; 51. a first mounting hole; 61. an upper cavity; 62. a lower cavity; 71. a first mount; 72. a second mounting base; 8. a connecting rod; 81. a screw; 82. connecting sleeves; 9. a push rod; 10. a liquid inlet channel; 11. a plug; 12. a spring; 13. a liquid outlet channel; 14. a connecting pipe; 151. a plug ring; 152. a compression ring; 153. a retainer ring; 16. a threaded plug; 171. a seal ring; 172. a retainer ring; 18. a piston rod; 19. a cylinder; 191. a boss; 20. a drive chamber; 21. a piston disc; 22. an air pipe joint; 23. an air intake passage; 27. a second mounting hole; 28. a flange portion; 29. a blocking portion; 30. an adjusting seat; 31. adjusting the bin; 32. adjusting the block; 33. an elastic member.

Description of the embodiments

The present patent will be further understood by the specific examples given below, which are not intended to be limiting.

Example 1: a fluid pressure regulating assembly comprising: the liquid inlet device comprises a base 3 provided with a liquid inlet 1 and a liquid outlet 2, wherein the upper end of the base 3 is connected with a guide seat 4 in a sealing way and an upper cavity 61 is formed between the guide seat 4 and the upper end of the base 3, the lower end of the base 3 is connected with a support seat 5 in a sealing way and a lower cavity 62 is formed between the support seat 5 and the lower end of the base 3, a first mounting seat 71 is arranged in the upper cavity 61, a second mounting seat 72 is arranged in the lower cavity 62, the first mounting seat 71 and the second mounting seat 72 which can move in the vertical direction are connected through a connecting rod 8 penetrating through the base 3, the lower end of a vertically extending ejector rod 9 is connected with the first mounting seat 71, and the upper end of the ejector rod 9 penetrates through the guide seat 4 and is in sliding fit with the inner wall of the guide seat 4;

the base 3 is internally provided with a liquid inlet channel 10, the lower end of the liquid inlet channel 10, the upper end of which is communicated with the liquid inlet 1, is communicated with the lower cavity 62, a plug 11 is arranged between a second mounting seat 72 positioned in the lower cavity 62 and the liquid inlet channel 10, the lower end of the plug 11 is embedded into a second mounting hole 27 formed in the upper surface of the second mounting seat 72 and is in clearance fit with the inner wall of the second mounting hole 27, the middle part of the plug 11 is provided with a flange part 28 which is radially outwards, the lower surface of the flange part 28 is attached to the upper surface of the second mounting seat 72, the upper end of the plug 11 is provided with a blocking part 29, a spring 12 which is in a compressed state is vertically arranged between the lower surface of the second mounting seat 72 and the supporting seat 5, when the liquid inlet is in a non-liquid inlet state, the blocking part 29 of the plug 11 is in sealing fit with an outlet of the lower end of the liquid inlet channel 10, and the liquid outlet channel 13 which is communicated with the lower cavity 62 and the liquid outlet 2 is arranged on one side of the base 3, which is opposite to the liquid inlet channel 10, and is opposite to the liquid inlet 1.

The blocking portion 29 is a hemispherical blocking portion.

The upper end of the liquid outlet channel 13, which is communicated with the lower cavity 62 at the lower end, is communicated with the upper cavity 61, and the space for further buffering and static pressure is provided for the decompressed liquid through the upper cavity, so that the balance and stability of the liquid pressure finally discharged from the liquid outlet outwards are improved on the basis of realizing the liquid pressure.

The lower part of the liquid inlet channel 10 is embedded with a connecting pipe 14, and the blocking part 29 at the upper end of the plug 11 can be embedded into the lower end of the connecting pipe 14 and is tightly matched with the inner wall of the connecting pipe 14.

The inner wall of the upper portion of the connection pipe 14 is formed in an opened cone shape.

The above mentioned blocking portion 29, which is arranged in a hemispherical shape, may be fitted tangentially to the inner wall of the connecting tube 14.

Example 2: a fluid pressure regulating assembly comprising: the liquid inlet device comprises a base 3 provided with a liquid inlet 1 and a liquid outlet 2, wherein the upper end of the base 3 is connected with a guide seat 4 in a sealing way and an upper cavity 61 is formed between the guide seat 4 and the upper end of the base 3, the lower end of the base 3 is connected with a support seat 5 in a sealing way and a lower cavity 62 is formed between the support seat 5 and the lower end of the base 3, a first mounting seat 71 is arranged in the upper cavity 61, a second mounting seat 72 is arranged in the lower cavity 62, the first mounting seat 71 and the second mounting seat 72 which can move in the vertical direction are connected through a connecting rod 8 penetrating through the base 3, the lower end of a vertically extending ejector rod 9 is connected with the first mounting seat 71, and the upper end of the ejector rod 9 penetrates through the guide seat 4 and is in sliding fit with the inner wall of the guide seat 4;

The blocking portion 29 is a hemispherical blocking portion.

The upper end of the liquid outlet channel 13, the lower end of which communicates with the lower chamber 62, communicates with the upper chamber 61.

The number of the connecting rods 8 is 2, and the 2 connecting rods 8 are respectively connected with the ends of the first mounting seat 71 and the second mounting seat 72.

The connecting rod 8 further comprises a screw 81 passing through the first mounting seat 71 and the second mounting seat 72 in sequence, and a connecting sleeve 82 sleeved on the screw 81 and positioned between the first mounting seat 71 and the second mounting seat 72.

The guide seat 4 is connected with the ejector rod 9 in a sealing way through at least one universal plug ring 151.

The number of the universal stopper rings 151 is 2, and a pressing ring 152 and a retainer ring 153 are sequentially stacked below the 2 stacked universal stopper rings 151.

The plug ring 151, the compression ring 152 and the retainer 153 are respectively sleeved on the ejector rod 9 and are tightly matched with the inner wall of the guide seat 4.

The lower surface of the supporting seat 5 is provided with a first mounting hole 51 communicated with the lower cavity 62, and the lower end of the spring 12 is embedded into the first mounting hole 51 and is in extrusion contact with the threaded plug 16 arranged in the first mounting hole 51.

The threaded plug 16 having the external thread is screwed to the inner wall of the lower end of the first mounting hole 51.

The base 3 further includes: a body 301 having a liquid inlet 1 and a liquid outlet 2, an upper sleeve 302 connected to the guide holder 4, and a lower sleeve 303 connected to the support holder 5 are provided.

The lower end of the guide seat 4 provided with the upper cavity groove and the upper end of the support seat 5 provided with the lower cavity groove are respectively embedded into the upper sleeve part 302 and the lower sleeve part 303 correspondingly, and a sealing ring 171 is arranged between the inner walls of the upper sleeve part 302 and the lower sleeve part 303 and the outer surfaces of the guide seat 4 and the support seat 5.

A retainer ring 172 is provided on both upper and lower sides of each seal ring 171.

Example 3: a manual pressure regulating valve comprising a fluid pressure regulating assembly, said fluid pressure regulating assembly comprising: the liquid inlet device comprises a base 3 provided with a liquid inlet 1 and a liquid outlet 2, wherein the upper end of the base 3 is connected with a guide seat 4 in a sealing way and an upper cavity 61 is formed between the guide seat 4 and the upper end of the base 3, the lower end of the base 3 is connected with a support seat 5 in a sealing way and a lower cavity 62 is formed between the support seat 5 and the lower end of the base 3, a first mounting seat 71 is arranged in the upper cavity 61, a second mounting seat 72 is arranged in the lower cavity 62, the first mounting seat 71 and the second mounting seat 72 which can move in the vertical direction are connected through a connecting rod 8 penetrating through the base 3, the lower end of a vertically extending ejector rod 9 is connected with the first mounting seat 71, and the upper end of the ejector rod 9 penetrates through the guide seat 4 and is in sliding fit with the inner wall of the guide seat 4;

a liquid inlet channel 10 is arranged in the base 3, the lower end of the liquid inlet channel 10, the upper end of which is communicated with the liquid inlet 1, is communicated with the lower cavity 62, a plug 11 is arranged between a second mounting seat 72 positioned in the lower cavity 62 and the liquid inlet channel 10, the lower end of the plug 11 is embedded into a second mounting hole 27 formed in the upper surface of the second mounting seat 72 and is in clearance fit with the inner wall of the second mounting hole 27, the middle part of the plug 11 is provided with a flange part 28 which is radially outwards, the lower surface of the flange part 28 is attached to the upper surface of the second mounting seat 72, the upper end of the plug 11 is provided with a blocking part 29, a spring 12 which is in a compressed state is vertically arranged between the lower surface of the second mounting seat 72 and the supporting seat 5, when the plug 11 is in a non-liquid inlet state, the blocking part 29 of the plug 11 is in sealing fit with an outlet of the lower end of the liquid inlet channel 10, and a liquid outlet 13 which is communicated with the lower cavity 62 and the liquid outlet 2 is arranged on one side of the base 3, which is opposite to the liquid inlet channel 10, and is opposite to the liquid inlet 1;

the pressure regulating device is characterized by further comprising an adjusting seat 30 connected with the upper end of the guide seat 4 through threads, an adjusting bin 19 is formed between the adjusting seat 30 and the guide seat 4, the upper end of the ejector rod 9 which is in sliding fit with the guide seat 4 extends into the adjusting bin 19 and is connected with an adjusting block 20, an elastic piece 21 in a compressed state is arranged between the adjusting block 20 and the adjusting seat 30, fluid entering from a liquid inlet at a certain pressure can sequentially flow through a liquid inlet channel and a lower cavity and then be outwards output from a liquid outlet at a smaller pressure, the balance and stability of the pressure of the output fluid can be improved, the length of the adjusting bin can be adjusted through rotating the guide seat, further the adjustment of the extrusion state of the elastic piece is realized, the elastic adjustment of the spring tension force is finally realized, and accordingly the pressure of the fluid at the liquid outlet after pressure reduction and pressure stabilization is adjusted, and the demand of the fluid pressure adjustment and the consistency and stability of the fluid pressure at the liquid outlet are further met.

The elastic member 21 is a heavy-load rectangular spring.

The upper surface of the guide seat 4 and the lower surface of the adjusting seat 30 are respectively provided with an adjusting groove, and the lower end of the adjusting seat 30 is embedded into the adjusting groove on the guide seat 4, so that the adjusting bin 19 is formed between 2 adjusting grooves.

The outer surface of the lower end of the adjusting seat 30 is connected with the inner wall of the adjusting groove on the guide seat 4 through threads.

The adjusting block 20 is a T-shaped block, and a vertical portion of the adjusting block 20 is inserted into a central through hole of the elastic member 21, and a horizontal portion of the adjusting block 20 disposed toward the ejector 9 is in press contact with the elastic member 21.

The blocking portion 29 is a hemispherical blocking portion.

Example 4: an automatic pressure regulating valve comprising a fluid pressure regulating assembly, said fluid pressure regulating assembly comprising: the liquid inlet device comprises a base 3 provided with a liquid inlet 1 and a liquid outlet 2, wherein the upper end of the base 3 is connected with a guide seat 4 in a sealing way and an upper cavity 61 is formed between the guide seat 4 and the upper end of the base 3, the lower end of the base 3 is connected with a support seat 5 in a sealing way and a lower cavity 62 is formed between the support seat 5 and the lower end of the base 3, a first mounting seat 71 is arranged in the upper cavity 61, a second mounting seat 72 is arranged in the lower cavity 62, the first mounting seat 71 and the second mounting seat 72 which can move in the vertical direction are connected through a connecting rod 8 penetrating through the base 3, the lower end of a vertically extending ejector rod 9 is connected with the first mounting seat 71, and the upper end of the ejector rod 9 penetrates through the guide seat 4 and is in sliding fit with the inner wall of the guide seat 4;

the hydraulic pressure regulating device is characterized by further comprising a cylinder body 19 arranged above the guide seat 4, a driving cavity 20 is arranged in the cylinder body 19, the upper end of a piston rod 18 is horizontally arranged in a piston disc 21 in the driving cavity 20, the lower end of the piston rod 18 extends out of the cylinder body 19 and is connected with the upper end of the ejector rod 9, an air pipe joint 22 is arranged on the cylinder body 19 and positioned on one side of the piston disc 21 opposite to the piston rod 18, the air pipe joint 22 is communicated with the driving cavity 20 in the cylinder body 19 through an air inlet channel 23, fluid entering from a liquid inlet at a certain pressure can be sequentially discharged from a liquid outlet at a smaller pressure after flowing through the liquid inlet channel and a lower cavity, the balance and stability of the pressure of the output fluid can be improved, the pressure of the fluid at the liquid outlet after pressure reduction and pressure stabilization can be regulated through regulating the air inlet pressure at the air pipe joint, and the elastic regulation of the spring tension can be realized, and the requirements on the pressure regulation of the fluid at the liquid outlet and the consistency and stability of the fluid pressure at the liquid outlet are further met.

The upper surface of the guide seat 4 is provided with a mounting groove 401, the center of the lower surface of the cylinder 19 is provided with a protruding part 191 embedded in the mounting groove 401, and the joint of the ejector rod 9 and the piston rod 18 is positioned in the area surrounded by the protruding part 191 and the mounting groove 401.

The working principle of the utility model is as follows:

the acting force of the second mounting seat on the spring is regulated through the ejector rod, so that the reverse tension of the spring is regulated;

when the pressure of the liquid inlet is smaller than the tension force of the spring, the plug is in sealing connection with the outlet at the lower end of the liquid inlet channel, and when the pressure of the liquid inlet is smaller than the pressure force of the liquid inlet, the fluid entering from the liquid inlet drives the plug to move towards the direction of the spring, and a fluid channel is formed between the plug and the liquid inlet channel, so that the fluid enters the lower cavity, the downward adjustment of the pressure of the fluid is realized in the process, the pressure equalization and the pressure stabilization are carried out in the lower cavity, and finally the fluid is output outwards from the liquid outlet;

the upper cavity and the lower cavity are further communicated through the liquid outlet channel, and the buffer space of the fluid after decompression is increased, so that the balance and stability of the pressure of the fluid output from the liquid outlet are further improved while the pressure is reduced.

By adopting the fluid pressure adjusting component, the fluid entering from the liquid inlet at a certain pressure sequentially flows through the liquid inlet channel and the lower cavity and then is outwards output from the liquid outlet at a smaller pressure through the opening and closing between the blocking part on the plug and the outlet of the liquid inlet channel, the balance and stability of the output fluid pressure can be improved, the self-adaptive coaxial adjustment between the plug and the liquid inlet channel which are in reciprocating telescopic movement can be realized through the floating arrangement of the plug, the stress disturbance caused by the eccentricity of the plug is avoided, the service life of the component can be prolonged, and the balance and stability of the fluid pressure adjustment can be further ensured.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A fluid pressure regulating assembly comprising: base (3) that are equipped with inlet (1) and liquid outlet (2) respectively, its characterized in that: an upper cavity (61) is formed between the upper end of the base (3) and a guide seat (4), a supporting seat (5) is connected with the lower end of the base (3) in a sealing way, a lower cavity (62) is formed between the lower end of the base (3) and the supporting seat (5), a first mounting seat (71) is arranged in the upper cavity (61), a second mounting seat (72) is arranged in the lower cavity (62), the first mounting seat (71) and the second mounting seat (72) which can move in the vertical direction are connected through a connecting rod (8) penetrating through the base (3), the lower end of a vertically extending ejector rod (9) is connected with the first mounting seat (71), and the upper end of the ejector rod (9) penetrates through the guide seat (4) and is in sliding fit with the inner wall of the guide seat (4);

be provided with a feed liquor passageway (10) in base (3), the upper end and feed liquor mouth (1) intercommunication the lower extreme and the lower cavity (62) of feed liquor passageway (10) communicate, be provided with a plug (11) between second mount pad (72) and feed liquor passageway (10) in lower cavity (62), the lower extreme embedding of plug (11) is seted up in second mounting hole (27) of second mount pad (72) upper surface and with the inner wall clearance fit of this second mounting hole (27), the middle part of plug (11) has a radially outside flange portion (28), the lower surface of this flange portion (28) and the upper surface laminating of second mount pad (72), the upper end of plug (11) has a blocking portion (29), be provided with a spring (12) that are in compression state between the lower surface of second mount pad (72) and supporting seat (5) vertically, when being in non-feed liquor state, blocking portion (29) and lower fluid outlet (10) of plug (11) are located the feed liquor passageway (2) of one side of sealing up in the base (2).

2. The fluid pressure regulating assembly of claim 1, wherein: the blocking portion (29) is a hemispherical blocking portion.

3. The fluid pressure regulating assembly of claim 1, wherein: the upper end of the liquid outlet channel (13) with the lower end communicated with the lower cavity (62) is communicated with the upper cavity (61).

4. The fluid pressure regulating assembly of claim 1, wherein: a connecting pipe (14) is embedded and installed at the lower part of the liquid inlet channel (10), and a blocking part (29) at the upper end of the plug (11) can be embedded into the lower end of the connecting pipe (14) and is tightly matched with the inner wall of the connecting pipe (14).

5. The fluid pressure regulating assembly of claim 4, wherein: the inner wall of the upper part of the connecting pipe (14) is in an open cone shape.

6. The fluid pressure regulating assembly of claim 5, wherein: the blocking part (29) arranged in a hemispherical shape can be tangentially matched with the inner wall of the connecting pipe (14).

7. A manual pressure regulating valve, characterized in that: the fluid pressure regulating assembly as claimed in any one of claims 1-6, further comprising a regulating seat (30) connected with the upper end of the guide seat (4) through threads, wherein a regulating bin (31) is formed between the regulating seat (30) and the guide seat (4), the upper end of the ejector rod (9) in sliding fit with the guide seat (4) extends into the regulating bin (31) and is connected with an adjusting block (32), and an elastic piece (33) in a compressed state is arranged between the adjusting block (32) and the regulating seat (30).

8. The manual pressure regulating valve according to claim 7, wherein: the elastic piece (33) is a heavy-load rectangular spring.

9. An automatic pressure regulating valve, characterized in that: the fluid pressure regulating assembly as claimed in any one of claims 1-6, further comprising a cylinder body (19) mounted above the guide seat (4), wherein a driving cavity (20) is arranged in the cylinder body (19), the upper end of a piston rod (18) is connected with a piston disc (21) horizontally arranged in the driving cavity (20), the lower end of the piston rod (18) extends out of the cylinder body (19) and is connected with the upper end of the ejector rod (9), an air pipe joint (22) is mounted on the cylinder body (19) and positioned on one side of the piston disc (21) opposite to the piston rod (18), and the air pipe joint (22) is communicated with the driving cavity (20) in the cylinder body (19) through an air inlet channel (23).

10. The automatic pressure regulating valve according to claim 9, wherein: the upper surface of guide holder (4) has seted up an mounting groove (401), the lower surface central authorities of cylinder body (19) have one imbeds protruding portion (191) in mounting groove (401), the junction of ejector pin (9) and piston rod (18) is located protruding portion (191) and mounting groove (401) and encloses into the region.