Dispensing pressure regulating valve for photovoltaic dispensing

Abstract

The application discloses a glue outlet pressure regulating valve for photovoltaic glue dispensing processing, which comprises a base provided with a liquid inlet and a liquid outlet, a guide seat is sealingly connected to the upper end of the base and an upper cavity is formed between the guide seat and the base, a support seat is sealingly connected to the lower end of the base and a lower cavity is formed between the support seat and the base, a first mounting seat is arranged in the upper cavity, a second mounting seat is arranged in the lower cavity, a spring in a compressed state is vertically arranged between the lower surface of the second mounting seat and the support seat, a first mounting hole communicating with the lower cavity is formed in the lower surface of the support seat, the lower end of the spring is embedded in the first mounting hole and is in extrusion contact with a threaded plug mounted in the first mounting hole. The application can improve the balance and stability of the output fluid pressure and flow, and can also balance and slow down the fluid, thereby improving the balance and stability of the fluid pressure at the liquid outlet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic dispensing, in particular to a glue outlet pressure regulating valve for photovoltaic dispensing processing. BACKGROUND

[0002] Solar cell panel is the core part of solar power generation system, and is the most valuable part of solar power generation system, which converts solar energy into electric energy. The cell laminated part must be packaged and protected by the frame during outdoor application. If the cell laminated part is not well sealed around, it will be damaged when encountering rain or working in a high humidity environment for a long time, resulting in that the solar cell panel cannot work normally. The basic requirement of packaging is sealing. The solar cell assembly is glued and packaged by an aluminum frame.

[0003] The photovoltaic assembly usually includes laminated parts, junction boxes and frames. During production, the frame and junction box are glued by a frame gluing machine and a junction box gluing machine respectively. When gluing such a large size part as the photovoltaic assembly, the amount of glue required is large, and the output flow of glue liquid in the self-supply glue unit is large, which easily leads to instability of the final glue outlet pressure and glue output. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a glue outlet pressure regulating valve for photovoltaic dispensing processing, which can improve the balance and stability of the output fluid pressure and flow, and can also balance and slow down the fluid passing through, thereby improving the balance and stability of the fluid pressure at the liquid outlet.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a glue outlet pressure regulating valve for photovoltaic dispensing processing, comprising: a base provided with a liquid inlet and a liquid outlet, respectively, an upper end of the base is sealingly connected with a guide seat and forms an upper cavity between the guide seat, a lower end of the base is sealingly connected with a support seat and forms a lower cavity between the support seat, a first mounting seat is arranged in the upper cavity, a second mounting seat is arranged in the lower cavity, the first mounting seat and the second mounting seat can move in the vertical direction and are connected by a connecting rod passing through the base, a lower end of a vertically extending top rod is connected with the first mounting seat, an upper end of the top rod slidingly matched with the guide seat is connected with a piston rod, an upper end of the piston rod connected with the top rod is embedded in a driving cavity of a cylinder body and is connected with a piston disc horizontally arranged in the driving cavity, a gas pipe joint is installed on the cylinder body and located on the side of the piston disc opposite to the piston rod, the gas pipe joint is in communication with the driving cavity in the cylinder body through a gas inlet channel.

[0006] The base is provided with a liquid inlet channel, the lower end of the liquid inlet channel is communicated with the lower cavity and is provided with a connecting nozzle, the connecting nozzle is provided with a plug between the second mounting seat in the lower cavity, the tubular part of the connecting nozzle is embedded in the liquid inlet channel, the outer surface of the annular part of the connecting nozzle below the tubular part is provided with a plurality of liquid outlet holes, the plug comprises a main body part which is slidably embedded in the annular part, a ball head part which is formed on the upper surface of the main body part and is embedded in the tubular part, and a columnar part which extends downward from the lower surface of the main body part, the upper surface of the main body part is provided with an annular groove around the ball head part, the columnar part is embedded in the second mounting hole on the upper surface of the second mounting seat and is in clearance fit with the inner wall of the second mounting hole, the main body part is provided with a flange which extends outward in the radial direction below the connecting nozzle, and the lower surface of the flange is in contact with the upper surface of the second mounting seat.

[0007] A spring in a compressed state is vertically arranged between the lower surface of the second mounting seat and the supporting seat, a first mounting hole which is communicated with the lower cavity is formed on the lower surface of the supporting seat, the lower end of the spring is embedded in the first mounting hole and is in extrusion contact with a threaded plug which is mounted in the first mounting hole, when in a non-liquid inlet state, the ball head part of the plug is in sealing fit with the tubular part of the connecting nozzle, a liquid outlet channel which is communicated with the lower cavity and the liquid outlet is arranged on the base on the side opposite to the liquid inlet of the liquid inlet channel.

[0008] The further improved scheme in the above technical scheme is as follows:

[0009] 1. In the above scheme, the threaded plug with external threads is in threaded connection with the inner wall of the lower end of the first mounting hole.

[0010] 2. In the above scheme, a pressure sensor is mounted on each of the liquid inlet and the liquid outlet, for sensing the liquid inlet pressure of the liquid inlet and the liquid outlet pressure of the liquid outlet in real time, and transmitting the obtained pressure data to a controller, the controller controls the air inlet amount at the tracheal connector according to the received liquid inlet pressure and liquid outlet pressure.

[0011] 3. In the above scheme, an installation groove is formed on the upper surface of the guide seat, the lower surface of the cylinder body is provided with a protruding part which is embedded in the installation groove, and the connection part of the top rod and the piston rod is located in the area surrounded by the protruding part and the installation groove.

[0012] 4. In the above scheme, the base further comprises a body part which is provided with the liquid inlet and the liquid outlet, an upper sleeve part which is connected with the guide seat, and a lower sleeve part which is connected with the supporting seat.

[0013] 5. In the above scheme, the lower end of the guide seat with an upper cavity groove and the upper end of the support seat with a lower cavity groove are respectively embedded in the upper sleeve part and the lower sleeve part, and a sealing ring is provided between the inner walls of the upper sleeve part and the lower sleeve part and the outer surfaces of the guide seat and the support seat.

[0014] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0015] 1. The glue outlet pressure regulating valve for photovoltaic glue dispensing processing of the present invention opens and closes the ball head on the plug and the tube body of the connecting nozzle, so that the fluid entering from the liquid inlet with a relatively large pressure and large flow flows through the liquid inlet channel and the lower cavity in turn and is output from the liquid outlet with a smaller pressure, and can improve the balance and stability of the output fluid pressure and flow rate. The floating setting of the plug can realize adaptive coaxial adjustment between the reciprocating telescopic plug and the liquid inlet channel, avoiding the force disturbance caused by the eccentricity of the plug, which can not only improve the service life of the component, but also further ensure the balance and stability of the fluid pressure regulation. The ball head on the plug and the annular groove around the ball head can further equalize and slow down the pressure of the fluid flowing through, thereby improving the balance and stability of the fluid pressure at the liquid outlet.

[0016] 2. The glue dispensing pressure regulating valve of the photovoltaic glue dispensing processing of the present invention has the upper end of the push rod that slides with the guide seat connected to a piston rod, and the upper end of the piston rod connected to the push rod is embedded in a driving cavity of a cylinder body and connected to a piston disk horizontally arranged in the driving cavity. An air pipe joint is installed on the cylinder body and on the side of the piston disk opposite to the piston rod. The air pipe joint is connected to the driving cavity in the cylinder body through an air inlet channel. A pressure sensor is installed on the liquid inlet and the liquid outlet for real-time sensing of the liquid inlet pressure and the liquid outlet pressure, and the acquired pressure data is transmitted to a controller. The controller controls the air intake volume at the trachea joint according to the received liquid inlet pressure and liquid outlet pressure. It can realize elastic adjustment of the spring tension by adjusting the air intake pressure at the trachea joint, thereby realizing adjustment of the pressure of the fluid at the liquid outlet after pressure reduction and pressure stabilization, further meeting the demand for fluid pressure regulation and the consistency and stability of the fluid pressure at the liquid outlet. It can also realize real-time adjustment of the air intake pressure at the trachea joint in real time by monitoring the pressure values ​​at the liquid inlet and liquid outlet obtained in real time, thereby realizing real-time control and adjustment of the spring tension, further improving the stability and consistency of the outlet pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attachment Figure 1 This is a schematic diagram of the overall structure of the glue discharge pressure regulating valve of the present invention;

[0018] Attachment Figure 2 For attachmentFigure 1 schematic view of a cross section along A-A;

[0019] Figure 1 is a schematic view of a cross section along B-B; Figure 3 Figure 2 is a schematic view of a cross section along A-A; Figure 2 Figure 3 is a schematic view of an enlarged section at C;

[0020] Figure 4 is a schematic view of a cross section along B-B; Figure 4 Figure 5 is a schematic view of a cross section along A-A; Figure 2 Figure 6 is a schematic view of an enlarged section at D;

[0021] Figure 7 is a schematic view of a cross section along B-B; Figure 5 Figure 8 is a schematic view of a cross section along A-A. Figure 1 In the above figures: 1, liquid inlet; 2, liquid outlet; 3, base; 301, body portion; 302, upper sleeve portion; 303, lower sleeve portion; 4, guide seat; 401, mounting groove; 5, support seat; 51, first mounting hole; 61, upper cavity; 62, lower cavity; 71, first mounting seat; 72, second mounting seat; 8, connecting rod; 81, screw rod; 82, connecting sleeve; 9, jacking rod; 10, liquid inlet passage; 11, plug; 111, body portion; 112, ball head portion; 113, cylindrical portion; 114, flange; 115, annular groove; 12, spring; 13, liquid outlet passage; 14, connecting mouth; 141, tube portion; 142, annular portion; 151, floating seal ring; 152, compression ring; 153, first stop ring; 16, threaded plug; 171, sealing ring; 172, second stop ring; 18, piston rod; 19, cylinder; 191, raised portion; 20, drive cavity; 21, piston disc; 22, air pipe joint; 23, air inlet passage; 24, second mounting hole; 33, liquid outlet through hole.

[0022] Embodiments The present patent can be further understood by the specific examples given below, which are not limiting.

[0023]

[0024] ​Embodiment 1: a glue pressure regulating valve for the glue injection process of a photovoltaic module frame, comprising: a base 3 provided with a liquid inlet 1 and a liquid outlet 2, respectively, the upper end of the base 3 is sealingly connected with a guide seat 4 and forms an upper cavity 61 with the guide seat 4, the lower end of the base 3 is sealingly connected with a support seat 5 and forms a lower cavity 62 with the support 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 are connected by a connecting rod 8 passing through the base 3 and movable in the vertical direction, the lower end of a vertically extending top rod 9 is connected with the first mounting seat 71, the upper end of the top rod 9 is connected with a piston rod 18 in sliding fit with the guide seat 4, the upper end of the piston rod 18 connected with the lower end of the top rod 9 is embedded in a driving cavity 20 of a cylinder 19 and connected with a piston disc 21 arranged horizontally in the driving cavity 20, a gas pipe joint 22 is arranged on the cylinder 19 and located on the side of the piston disc 21 opposite to the piston rod 18, the gas pipe joint 22 is in communication with the driving cavity 20 in the cylinder 19 through a gas inlet channel 23;

[0025] A liquid inlet channel 10 is arranged in the base 3, the lower end of the liquid inlet channel 10 in communication with the liquid inlet 1 is in communication with the lower cavity 62 and is provided with a connecting nozzle 14, a plug 11 is arranged between the connecting nozzle 14 and the second mounting seat 72 in the lower cavity 62, the tubular part 141 of the connecting nozzle 14 is embedded in the liquid inlet channel 10, a plurality of liquid outlet holes 25 are arranged on the outer surface of the annular part 142 of the connecting nozzle 14 below the tubular part 141 and having a larger inner diameter than the tubular part 141, the plug 11 comprises: a main body 111 slidably embedded in the annular part 142, a ball head 112 formed on the upper surface of the main body 111 and embedded in the tubular part 141, and a columnar part 113 extending downward from the central lower surface of the main body 111, the upper surface of the main body 111 has an annular groove 115 surrounding the ball head 112, the columnar part 113 is embedded in the second mounting hole 24 arranged on the upper surface of the second mounting seat 72 and is in clearance fit with the inner wall of the second mounting hole 24, the main body 111 has a flange 114 outward in the radial direction below the connecting nozzle 14, the lower surface of the flange 114 is in abutment with the upper surface of the second mounting seat 72, a spring 12 in compression is arranged vertically between the lower surface of the second mounting seat 72 and the support seat 5, when in the non-liquid inlet state, the ball head 112 of the plug 11 is in sealing fit with the tubular part 141 of the connecting nozzle 14, a liquid outlet channel 13 is arranged on the base 3 and located on the side of the liquid inlet channel 10 opposite to the liquid inlet 1, in communication with the lower cavity 62 and the liquid outlet 2;

[0026] By opening and closing between the ball head on the plug and the pipe body part of the connecting nozzle, the fluid entering from the liquid inlet at a certain pressure flows through the liquid inlet channel and the lower cavity in turn, and then is output from the liquid outlet at a smaller pressure, and the uniformity and stability of the output fluid pressure can be improved, and by floating setting of the plug, self-adaptive coaxial adjustment between the reciprocating plug and the liquid inlet channel can be realized, stress disturbance caused by eccentric plug can be avoided, the service life of the assembly can be improved, and the uniformity and stability of fluid pressure regulation can be further ensured, and the ball head on the plug and the annular groove around the ball head part can further uniformly and slowly press the fluid flowing through, thereby improving the uniformity and stability of the fluid pressure at the liquid outlet.

[0027] The inner wall of the annular groove 115 is an arc surface.

[0028] The liquid outlet through hole 25 arranged in the circumferential direction is provided with four.

[0029] The ball head part 112 is provided in a semispherical shape.

[0030] The upper end of the liquid outlet channel 13 communicated with the lower cavity 62 is communicated with the upper cavity 61, and the upper cavity provides a further buffering and static pressure space for the liquid after pressure reduction, thereby improving the uniformity and stability of the liquid pressure finally discharged from the liquid outlet.

[0031] The inner wall of the upper part of the pipe body part 141 of the connecting nozzle 14 is in an open conical shape.

[0032] A pressure sensor is installed on the liquid inlet 1 and the liquid outlet 2, for real-time sensing of the liquid inlet pressure of the liquid inlet 1 and the liquid outlet pressure of the liquid outlet 2, and transmitting the obtained pressure data to a controller, and the controller controls the air inlet amount at the air pipe joint 22 according to the received liquid inlet pressure and liquid outlet pressure.

[0033] The upper surface of the guide seat 4 is provided with a mounting groove 401, the lower surface of the cylinder body 19 is provided with a protruding part 191 embedded in the mounting groove 401, and the connection part of the top rod 9 and the piston rod 18 is located in the area surrounded by the protruding part 191 and the mounting groove 401.

[0034] The base 3 further comprises: a body part 301 provided with a liquid inlet 1 and a liquid outlet 2, an upper sleeve part 302 connected with the guide seat 4, and a lower sleeve part 303 connected with the support seat 5.

[0035] The lower end of the guiding seat 4 with the upper cavity groove and the upper end of the supporting seat 5 with the lower cavity groove are respectively embedded in the upper sleeve part 302 and the lower sleeve part 303, and a sealing ring 171 is arranged between the inner wall of the upper sleeve part 302 and the lower sleeve part 303 and the outer surface of the guiding seat 4 and the supporting seat 5.

[0036] Embodiment 2: a glue outlet pressure regulating valve, comprising: a base 3 provided with a liquid inlet 1 and a liquid outlet 2 respectively, the upper end of the base 3 is sealingly connected with a guiding seat 4 and forms an upper cavity 61 with the guiding seat 4, the lower end of the base 3 is sealingly connected with a supporting seat 5 and forms a lower cavity 62 with 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 are movable in the vertical direction and are connected by a connecting rod 8 passing through the base 3, the lower end of a vertically extending top rod 9 is connected with the first mounting seat 71, the upper end of the top rod 9 slidingly matched with the guiding seat 4 is connected with a piston rod 18, the upper end of the piston rod 18 connected with the lower end of the top rod 9 is embedded in a driving cavity 20 of a cylinder 19 and is connected with a piston disc 21 horizontally arranged in the driving cavity 20, a gas pipe joint 22 is arranged on the cylinder 19 and is located on the side of the piston disc 21 away from the piston rod 18, the gas pipe joint 22 is communicated with the driving cavity 20 in the cylinder 19 through a gas inlet channel 23;

[0037] The base 3 is provided with a liquid inlet channel 10, the lower end of which is communicated with the lower cavity 62 and is provided with a connecting nozzle 14, the connecting nozzle 14 is provided with a plug 11 between the second mounting seat 72 in the lower cavity 62, the tubular part 141 of the connecting nozzle 14 is embedded in the liquid inlet channel 10, the annular part 142 of the connecting nozzle 14 is provided with a plurality of liquid outlet holes 25 on the outer surface below the tubular part 141 and with a larger inner diameter than the tubular part 141, the plug 11 comprises a main body 111 which is slidably embedded in the annular part 142, a ball head 112 which is formed on the upper surface of the main body 111 and is embedded in the tubular part 141, and a columnar part 113 which extends downward from the central lower surface of the main body 111, the upper surface of the main body 111 is provided with an annular groove 115 around the ball head 112, the columnar part 113 is embedded in the second mounting hole 24 on the upper surface of the second mounting seat 72 and is in clearance fit with the inner wall of the second mounting hole 24, the main body 111 is provided with a flange 114 which extends radially outward below the connecting nozzle 14, the lower surface of the flange 114 is in abutment with the upper surface of the second mounting seat 72, the lower surface of the second mounting seat 72 is vertically provided with a spring 12 in compression between the support seat 5, when in the non-liquid inlet state, the ball head 112 of the plug 11 is in sealing fit with the tubular part 141 of the connecting nozzle 14, the base 3 is provided with a liquid outlet channel 13 which is communicated with the lower cavity 62 and the liquid outlet 2 on the side opposite to the liquid inlet 1 of the liquid inlet channel 10.

[0038] The inner wall of the annular groove 115 is a hemispherical surface.

[0039] The ball head 112 is hemispherical.

[0040] The upper surface of the guide seat 4 is provided with a mounting groove 401, the lower surface of the cylinder body 19 is provided with a protruding part 191 which is embedded in the mounting groove 401, the connection between the top rod 9 and the piston rod 18 is located in the area surrounded by the protruding part 191 and the mounting groove 401.

[0041] The base 3 further comprises a body part 301 which is provided with the liquid inlet 1 and the liquid outlet 2, an upper sleeve part 302 which is connected with the guide seat 4, and a lower sleeve part 303 which is connected with the support seat 5.

[0042] Each of the sealing rings 171 is provided with a second retaining ring 172 on both upper and lower sides.

[0043] The connecting rod 8 is provided with two, each of the two connecting rods 8 is connected with the end of the first mounting seat 71 and the second mounting seat 72 respectively.

[0044] The connecting rod 8 further comprises a screw rod 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 rod 81 and located between the first mounting seat 71 and the second mounting seat 72.

[0045] The guide seat 4 and the top rod 9 are sealingly connected through at least one check ring 151.

[0046] The check ring 151 is provided with two check rings 151 stacked in sequence, and a pressing ring 152 and a first stop ring 153 are stacked in sequence below the two check rings 151.

[0047] The check ring 151, the pressing ring 152 and the stop ring 153 are each sleeved on the top rod 9 and tightly matched with the inner wall of the guide seat 4.

[0048] A first mounting hole 51 communicating with the lower cavity 62 is formed in the lower surface of the support seat 5, and the lower end of the spring 12 is embedded in the first mounting hole 51 and in extrusion contact with a threaded plug 16 mounted in the first mounting hole 51.

[0049] The threaded plug 16 with external threads is threadedly connected with the inner wall of the lower end of the first mounting hole 51.

[0050] The working principle is as follows:

[0051] The force of the second mounting seat acting on the spring is adjusted through the top rod, so as to adjust the reverse relaxation force of the spring.

[0052] When the liquid inlet pressure of the liquid inlet is less than the relaxation force of the spring, the plug is sealingly connected with the outlet at the lower end of the liquid inlet channel, and when the relaxation force of the adjusted spring is less than the liquid inlet pressure of the liquid inlet, the fluid entering from the liquid inlet drives the plug to move towards the spring while forming a fluid channel between the plug and the liquid inlet channel to enable the fluid to enter the lower cavity, in the process, the fluid pressure is lowered, and the pressure equalization and pressure stabilization are realized in the lower cavity, and finally the fluid is outputted outward from the liquid outlet;

[0053] Further, the upper and lower cavities are communicated through the liquid outlet channel, and the buffer space of the fluid after pressure reduction is increased, so as to further improve the balance and stability of the fluid pressure outputted outward from the liquid outlet while reducing the pressure.

[0054] The automatic pressure stabilizing valve has the advantages that: the fluid entering the liquid inlet at a certain pressure is sequentially outputted from the liquid outlet at a smaller pressure through the liquid inlet channel and the lower cavity, and the uniformity and stability of the output fluid pressure can be improved; the self-adaptive coaxial adjustment between the reciprocating plug and the liquid inlet channel can be realized, the stress disturbance caused by the eccentric plug can be avoided, the service life of the assembly can be improved, and the uniformity and stability of the fluid pressure regulation can be further ensured; the plug ball head and the annular groove around the ball head can further equalize and slow down the fluid, thereby improving the uniformity and stability of the fluid pressure at the liquid outlet; the inlet air pressure of the air pipe joint can be adjusted to realize the elastic adjustment of the spring relaxation force, thereby realizing the regulation of the fluid pressure at the liquid outlet after pressure reduction and pressure stabilization, further meeting the demand for fluid pressure regulation and the consistency and stability of the fluid pressure at the liquid outlet; the inlet air pressure of the air pipe joint can be adjusted in real time according to the pressure values of the liquid inlet and the liquid outlet obtained in real time, thereby realizing the real-time control and adjustment of the spring relaxation force, and further improving the stability and consistency of the outlet pressure.

[0055] Further, the inlet air pressure of the air pipe joint can be adjusted to realize the elastic adjustment of the spring relaxation force, thereby realizing the regulation of the fluid pressure at the liquid outlet after pressure reduction and pressure stabilization, further meeting the demand for fluid pressure regulation and the consistency and stability of the fluid pressure at the liquid outlet; the inlet air pressure of the air pipe joint can be adjusted in real time according to the pressure values of the liquid inlet and the liquid outlet obtained in real time, thereby realizing the real-time control and adjustment of the spring relaxation force, and further improving the stability and consistency of the outlet pressure.

[0056] The above embodiments are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. A glue dispensing pressure regulating valve for photovoltaic glue dispensing processing, comprising: A base (3) is provided with a liquid inlet (1) and a liquid outlet (2), characterized in that: the upper end of the base (3) is sealedly connected to a guide seat (4) and an upper cavity (61) is formed between the guide seat (4); the lower end of the base (3) is sealedly connected to a support seat (5) and a lower cavity (62) is formed between the support seat (5); a first mounting seat (71) is provided in the upper cavity (61), and a second mounting seat (72) is provided in the lower cavity (62); the first mounting seat (71) and the second mounting seat (72) are both movable in the vertical direction and are connected by a connecting rod (8) passing through the base (3); a vertical The lower end of the straight-extending push rod (9) is connected to the first mounting seat (71), the upper end of the push rod (9) that is slidably matched with the guide seat (4) is connected to a piston rod (18), the lower end of the piston rod (18) is connected to the push rod (9), the upper end of the piston rod (18) is embedded in a driving chamber (20) of a cylinder body (19) and is connected to a piston disc (21) horizontally arranged in the driving chamber (20), and an air pipe joint (22) is installed on the cylinder body (19) and on the side of the piston disc (21) opposite to the piston rod (18), and the air pipe joint (22) is communicated with the driving chamber (20) in the cylinder body (19) through an air inlet channel (23); A liquid inlet channel (10) is provided in the base (3), the upper end of the liquid inlet channel (10) is communicated with the liquid inlet port (1), the lower end of the liquid inlet channel (10) is communicated with the lower cavity (62) and is provided with a connecting nozzle (14), a plug (11) is provided between the connecting nozzle (14) and the second mounting seat (72) located in the lower cavity (62), the tube body (141) of the connecting nozzle (14) is embedded in the liquid inlet channel (10), and a plurality of liquid outlet holes (25) are provided on the outer surface of the annular portion (142) of the connecting nozzle (14) which is located below the tube body (141) and has an inner diameter larger than that of the tube body (141), and the plug (11) includes: a slidable plug (11) embedded in the annular portion (142) A main body (111), a ball head (112) formed in the center of the upper surface of the main body (111) and capable of being embedded in the tubular body (141), and a columnar body (113) extending downward from the center of the lower surface of the main body (111), wherein the upper surface of the main body (111) has an annular groove (115) formed around the ball head (112), the columnar body (113) is embedded in a second mounting hole (24) formed in the upper surface of the second mounting seat (72) and is clearance-matched with the inner wall of the second mounting hole (24), and a radially outward flange (114) is provided on the main body (111) and located below the connecting nozzle (14), and the lower surface of the flange (114) is in contact with the upper surface of the second mounting seat (72); A spring (12) in a compressed state is vertically arranged between the lower surface of the second mounting seat (72) and the support seat (5), and a first mounting hole (51) communicating with the lower cavity (62) is provided on the lower surface of the support seat (5). The lower end of the spring (12) is embedded in the first mounting hole (51) and is in compression contact with the threaded plug (16) installed in the first mounting hole (51). When in a non-liquid-injecting state, the ball head (112) of the plug (11) is sealed with the tube body (141) of the connecting nozzle (14). A liquid outlet channel (13) communicating with the lower cavity (62) and the liquid outlet (2) is provided on the base (3) and located on the side of the liquid inlet channel (10) opposite to the liquid inlet (1).

2. The glue dispensing pressure regulating valve for photovoltaic glue dispensing processing according to claim 1 is characterized in that: The threaded plug (16) having an external thread is threadedly connected to the inner wall of the lower end of the first mounting hole (51).

3. The glue dispensing pressure regulating valve for photovoltaic glue dispensing processing according to claim 1 is characterized in that: A pressure sensor is installed on each of the liquid inlet (1) and the liquid outlet (2) for sensing the liquid inlet pressure of the liquid inlet (1) and the liquid outlet pressure of the liquid outlet (2) in real time, and transmitting the acquired pressure data to a controller. The controller controls the air intake at the air pipe joint (22) according to the received liquid inlet pressure and liquid outlet pressure.

4. The glue dispensing pressure regulating valve for photovoltaic glue dispensing processing according to claim 1 is characterized in that: The upper surface of the guide seat (4) is provided with a mounting groove (401), the center of the lower surface of the cylinder body (19) is provided with a raised portion (191) embedded in the mounting groove (401), and the connection between the push rod (9) and the piston rod (18) is located in the area enclosed by the raised portion (191) and the mounting groove (401).

5. The glue dispensing pressure regulating valve for photovoltaic glue dispensing processing according to claim 4 is characterized in that: The base (3) further comprises: a main body (301) provided with a liquid inlet (1) and a liquid outlet (2), an upper sleeve (302) connected to the guide seat (4), and a lower sleeve (303) connected to the support seat (5).

6. The glue discharging pressure regulating valve for photovoltaic glue dispensing processing according to claim 5 is characterized in that: The lower end of the guide seat (4) with an upper cavity groove and the upper end of the support seat (5) with a lower cavity groove are respectively embedded in the upper sleeve portion (302) and the lower sleeve portion (303), and a sealing ring (171) is provided between the inner wall of each of the upper sleeve portion (302) and the lower sleeve portion (303) and the outer surface of the guide seat (4) and the support seat (5).

Images