Dispensing pressure adjustment mechanism for photovoltaic module

Abstract

The application discloses a kind of dispensing pressure adjusting mechanism of photovoltaic module, comprising: the base being respectively provided with inlet and outlet, the upper end of base is sealingly connected with a guide seat and forms a upper cavity between the guide seat, the lower end of base is sealingly connected with a support seat and forms a lower cavity between the support seat, a first mounting seat is provided in the upper cavity, a second mounting seat is provided in the lower cavity, the first mounting seat and the second mounting seat can be moved in vertical direction, and the first mounting seat and the second mounting seat are connected by a connecting rod passing through the base, the lower end of a vertically extending top rod is connected with the first mounting seat, the upper end of the top rod slidingly cooperates with the guide seat and is connected with a piston rod, and the guide seat and the top rod are sealingly connected by at least one piston ring.The application can adjust the pressure of fluid at the outlet after pressure reduction and voltage stabilization, and can also improve the stability and consistency of outlet pressure by real-time control and adjustment of spring relaxation force.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic glue dispensing, and in particular to a glue dispensing pressure regulating mechanism for a photovoltaic module. Background Art

[0002] Photovoltaic modules typically include laminates, junction boxes, and frames. During the processing of photovoltaic modules, the high-temperature tape on the photovoltaic modules is removed and the junction box is installed on the photovoltaic modules. In order to make the junction box installation more secure, a dispensing device is usually used to apply glue to the junction box installation location of the photovoltaic module, and then the junction box is firmly fixed to the photovoltaic module with glue. After the installation and welding process of the junction box are completed, the photovoltaic module is framed. During the framing process, before installing the frame, glue needs to be pre-applied to the edge of the photovoltaic module so that the frame can fit firmly with the photovoltaic module. Therefore, during the production process of photovoltaic modules, a frame glue machine and a junction box glue machine are required to glue the frame and junction box respectively.

[0003] However, when gluing large-sized parts such as photovoltaic modules, a large amount of glue is required, and the flow rate of glue output from the glue supply unit to the outside is large, which can easily lead to instability in the final glue output pressure and glue output. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a dispensing pressure regulating mechanism for photovoltaic modules, which can regulate the pressure of the fluid at the liquid outlet after pressure reduction and stabilization, and can improve the stability and consistency of the outlet pressure through real-time control and adjustment of the spring tension.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a dispensing pressure regulating mechanism for a photovoltaic module, comprising: a base respectively provided with a liquid inlet and a liquid outlet, the upper end of the base being sealedly connected to a guide seat and forming an upper cavity between the guide seat, the lower end of the base being sealedly connected to a support seat and forming a lower cavity between the support seat, a first mounting seat being provided in the upper cavity, a second mounting seat being provided in the lower cavity, the first mounting seat and the second mounting seat, both of which are movable in the vertical direction, being connected by a connecting rod passing through the base, the lower end of a vertically extending push rod being connected to the first mounting seat, the upper end of the push rod slidably matched with the guide seat being connected to a piston rod, the guide seat and the push rod being sealed by at least one universal plug ring, the upper end of the piston rod connected to the push rod at the lower end being 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 being installed on the cylinder body and on the side of the piston disk opposite to the piston rod, the air pipe joint being connected to the driving cavity in the cylinder body through an air inlet channel;

[0006] A liquid inlet channel is provided in the base, and the lower end of the liquid inlet channel whose upper end is connected with the liquid inlet port is connected with the lower cavity and is installed with a connecting nozzle, a plug is provided between the connecting nozzle and the second mounting seat located in the lower cavity, the tube body of the connecting nozzle is embedded in the liquid inlet channel, and a plurality of liquid outlet holes are provided on the outer surface of the annular portion of the connecting nozzle located below the tube body and having an inner diameter larger than that of the tube body, and the plug comprises: a main body portion which can be slidably embedded in the annular portion, a ball head portion formed in the center of the upper surface of the main body portion and can be embedded in the tube body portion, and a columnar portion extending downward from the center of the lower surface of the main body portion, and the upper surface of the main body portion has a There is an annular groove opened around the ball head, and the column part is embedded in the second mounting hole opened on the upper surface of the second mounting seat and is loosely matched with the inner wall of the second mounting hole. The main body part is provided with a radially outward flange below the connecting nozzle, and the lower surface of the flange is in contact with the upper surface of the second mounting seat. A spring in a compressed state is vertically arranged between the lower surface of the second mounting seat and the support seat. When in a non-liquid-injecting state, the ball head of the plug is sealed with the tube body of the connecting nozzle, and a liquid outlet channel connecting the lower cavity and the liquid outlet is provided on the base and located on the side of the liquid inlet channel opposite to the liquid inlet.

[0007] The further improved scheme in the above technical scheme is as follows:

[0008] 1. In the above solution, there are two Variseal rings, and a pressure ring and a first retaining ring are stacked in sequence below the two stacked Variseal rings.

[0009] 2. In the above solution, the universal seal ring, the pressure ring and the retaining ring are each mounted on the ejector rod and tightly fit with the inner wall of the guide seat.

[0010] 3. In the above solution, the inner wall of the annular groove is an arc-shaped surface or a hemispherical surface.

[0011] 4. In the above solution, there are four liquid outlet holes arranged at intervals along the circumferential direction.

[0012] 5. In the above solution, the ball head is set to be hemispherical.

[0013] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0014] 1. The dispensing pressure regulating mechanism of the photovoltaic module 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.

[0015] 2. The dispensing pressure regulating mechanism of the photovoltaic module of the present invention comprises the upper end of the push rod which is slidably matched with the guide seat and is connected to a piston rod, and the upper end of the piston rod which is connected to the push rod is embedded in a driving cavity of a cylinder body and is connected to a piston disk which is 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 both the liquid inlet and the liquid outlet for real-time sensing of the liquid inlet pressure and the liquid outlet pressure, and transmitting the acquired pressure data 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

[0016] Attachment Figure 1 Schematic diagram of the overall structure of the dispensing pressure regulating mechanism of the present invention;

[0017] Attachment Figure 2 For attachment Figure 1 Schematic diagram of the cross section along AA;

[0018] Attachment Figure 3 For attachment Figure 2 Enlarged schematic diagram of point C in the middle;

[0019] Attachment Figure 4 For attachment Figure 2 The enlarged schematic diagram of point D in the middle;

[0020] Attachment Figure 5 For attachment Figure 1 Schematic cross-section along the middle line BB.

[0021] In the above figures: 1, liquid inlet; 2, liquid outlet; 3, base; 301, main body; 302, upper sleeve; 303, lower sleeve; 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; 82, connecting sleeve; 9, ejector rod; 10, liquid inlet channel; 11, plug; 111, main body; 112, ball head; 113, column 114, flange; 115, annular groove; 12, spring; 13, liquid outlet channel; 14, connecting nozzle; 141, tube body; 142, annular portion; 151, universal seal ring; 152, pressure ring; 153, first retaining ring; 16, threaded plug; 171, sealing ring; 172, second retaining ring; 18, piston rod; 19, cylinder body; 191, raised portion; 20, drive chamber; 21, piston disc; 22, trachea joint; 23, air inlet channel; 24, second mounting hole; 33, liquid outlet through hole. Implementation Method

[0022] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0023] Example 1: A glue dispensing pressure regulating mechanism, used in the glue application process of the photovoltaic module frame, comprising: a base 3 respectively provided with a liquid inlet 1 and a liquid outlet 2, 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, and the first mounting seat 71 and the second mounting seat 72 are both movable in the vertical direction. 2 are connected by a connecting rod 8 passing through the base 3, the lower end of a vertically 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 upper end of the piston rod 18 connected to the push rod 9 at its lower end is embedded in a drive chamber 20 of a cylinder body 19 and is connected to a piston disk 21 horizontally arranged in the drive chamber 20, an air pipe joint 22 is installed on the cylinder body 19 and on the side of the piston disk 21 opposite to the piston rod 18, and the air pipe joint 22 is connected to the drive chamber 20 in the cylinder body 19 through an air inlet channel 23;

[0024] A liquid inlet channel 10 is provided in the base 3, and the lower end of the liquid inlet channel 10, whose upper end is connected to the liquid inlet port 1, is connected to the lower cavity 62 and is installed with a connecting nozzle 14, and 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. The plug 11 includes: a main body 111 that can be slidably embedded in the annular portion 142, a ball head 112 formed in the center of the upper surface of the main body 111 and can be embedded in the tube body 141, and a columnar portion 113 extending downward from the center of the lower surface of the main body 111. 1 has an annular groove 115 opened around the ball head 112 on the upper surface, the column portion 113 is embedded in the second mounting hole 24 opened on the upper surface of the second mounting seat 72 and is clearance-matched with the inner wall of the second mounting hole 24, the main body 111 is provided with a radially outward flange 114 below the connecting nozzle 14, 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, 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, and a liquid outlet channel 13 connecting 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;

[0025] By opening and closing the ball head on the plug and the tube body of the connecting nozzle, the fluid entering from the liquid inlet with a certain pressure flows through the liquid inlet channel and the lower cavity in turn, and is output from the liquid outlet with a smaller pressure, and the balance and stability of the output fluid pressure can be improved. By setting the plug in a float, adaptive coaxial adjustment between the reciprocating telescopic plug and the liquid inlet channel can be achieved to avoid 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.

[0026] The inner wall of the annular groove 115 is an arc-shaped surface.

[0027] There are four liquid outlet holes 25 arranged at intervals along the circumferential direction.

[0028] The ball head 112 is configured to be hemispherical.

[0029] The upper end of the liquid outlet channel 13, whose lower end is connected to the lower cavity 62, is connected to the upper cavity 61, and the upper cavity provides further buffering and static pressure space for the decompressed liquid. On the basis of achieving liquid pressure, the balance and stability of the liquid pressure finally discharged from the liquid outlet are improved.

[0030] The inner wall of the upper portion of the tube body 141 of the connecting nozzle 14 is in an open tapered shape.

[0031] A pressure sensor is installed on the above-mentioned liquid inlet 1 and liquid outlet 2, which is used to sense the liquid inlet pressure of the liquid inlet 1 and the liquid outlet pressure of the liquid outlet 2 in real time, and transmit 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.

[0032] The upper surface of the guide seat 4 is provided with a mounting groove 401 , and the center of the lower surface of the cylinder body 19 has a protrusion 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 surrounded by the protrusion 191 and the mounting groove 401 .

[0033] The base 3 further comprises: a main body 301 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 .

[0034] The lower end of the guide seat 4 with the upper cavity groove and the upper end of the support seat 5 with the 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 walls of the upper sleeve portion 302 and the lower sleeve portion 303 and the outer surfaces of the guide seat 4 and the support seat 5.

[0035] Embodiment 2: A dispensing pressure regulating mechanism, comprising: a base 3 provided with a liquid inlet 1 and a liquid outlet 2, 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, a second mounting seat 72 is provided in the lower cavity 62, and the first mounting seat 71 and the second mounting seat 72, both of which are movable in the vertical direction, are connected by a through-base. The connecting rod 8 of the seat 3 is connected, the lower end of a vertically extending push rod 9 is connected to the first mounting seat 71, the upper end of the push rod 9 that slides with the guide seat 4 is connected to a piston rod 18, the upper end of the piston rod 18 connected to the push rod 9 at the lower end is embedded in a drive chamber 20 of a cylinder body 19 and is connected to a piston disk 21 horizontally arranged in the drive chamber 20, and an air pipe joint 22 is installed on the cylinder body 19 and on the side of the piston disk 21 opposite to the piston rod 18. The air pipe joint 22 is connected to the drive chamber 20 in the cylinder body 19 through an air inlet channel 23;

[0036] A liquid inlet channel 10 is provided in the base 3, and the lower end of the liquid inlet channel 10, whose upper end is connected to the liquid inlet port 1, is connected to the lower cavity 62 and is installed with a connecting nozzle 14, and 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. The plug 11 includes: a main body 111 that can be slidably embedded in the annular portion 142, a ball head 112 formed in the center of the upper surface of the main body 111 and can be embedded in the tube body 141, and a columnar portion 113 extending downward from the center of the lower surface of the main body 111. 1 has an annular groove 115 opened around the ball head 112 on the upper surface, and the column portion 113 is embedded in the second mounting hole 24 opened on the upper surface of the second mounting seat 72 and is clearance-matched with the inner wall of the second mounting hole 24. The main body 111 is provided with a radially outward flange 114 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. 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 connecting 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.

[0037] The inner wall of the annular groove 115 is a hemispherical surface.

[0038] The ball head 112 is configured to be hemispherical.

[0039] The upper surface of the guide seat 4 is provided with a mounting groove 401 , and the center of the lower surface of the cylinder body 19 has a protrusion 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 surrounded by the protrusion 191 and the mounting groove 401 .

[0040] The base 3 further comprises: a main body 301 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 .

[0041] A second retaining ring 172 is provided on the upper and lower sides of each sealing ring 171 .

[0042] There are two connecting rods 8 , and the two connecting rods 8 are connected to the ends of the first mounting seat 71 and the second mounting seat 72 respectively.

[0043] The connecting rod 8 further includes 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 .

[0044] The guide seat 4 and the ejector rod 9 are sealed and connected via at least one universal seal ring 151 .

[0045] There are two Variseal rings 151 , and a pressure ring 152 and a first retaining ring 153 are stacked in sequence below the two stacked Variseal rings 151 .

[0046] The above-mentioned universal ring 151, pressure ring 152 and retaining ring 153 are each mounted on the push rod 9 and tightly matched with the inner wall of the guide seat 4.

[0047] A first mounting hole 51 communicating with the lower cavity 62 is defined on 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 is in press contact with the threaded plug 16 installed in the first mounting hole 51 .

[0048] The threaded plug 16 with external threads is threadedly connected to the inner wall of the lower end of the first mounting hole 51 .

[0049] The working principle is:

[0050] The force exerted by the second mounting seat on the spring is adjusted by the push rod, thereby adjusting the reverse tension of the spring;

[0051] When the liquid inlet pressure is less than the tension of the spring, the plug maintains a sealed connection with the outlet at the lower end of the liquid inlet channel. When the tension of the adjusted spring is less than the liquid inlet pressure, the fluid entering from the liquid inlet drives the plug to move toward the spring, and at the same time, a fluid channel is formed between the plug and the liquid inlet channel, allowing the fluid to enter the lower cavity. In this process, the fluid pressure is lowered, and the pressure is equalized and stabilized in the lower cavity, and finally discharged outward from the liquid outlet.

[0052] The upper and lower cavities are further connected through the liquid outlet channel to increase the buffer space of the fluid after decompression, thereby further improving the balance and stability of the fluid pressure output from the liquid outlet while reducing the pressure.

[0053] The above-mentioned automatic pressure-stabilizing valve is adopted, which opens and closes between 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 certain pressure flows through the liquid inlet channel and the lower cavity in sequence and is output from the liquid outlet with a smaller pressure, thereby improving the balance and stability of the output fluid pressure. In addition, by the floating setting of the plug, adaptive coaxial adjustment between the reciprocating telescopic plug and the liquid inlet channel can be achieved, avoiding the force disturbance caused by the eccentricity of the plug, which can not only prolong 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 pressure of the fluid at the liquid outlet.

[0054] Furthermore, the elastic adjustment of the spring tension can be achieved by adjusting the air inlet pressure at the air pipe joint, thereby adjusting the pressure of the fluid at the liquid outlet after pressure reduction and stabilization, further meeting the demand for fluid pressure regulation and the consistency and stability of the fluid pressure at the liquid outlet, and the air inlet pressure at the air pipe joint can be adjusted in real time by real-time monitoring of the pressure values ​​at the liquid inlet and liquid outlet, thereby achieving real-time control and adjustment of the spring tension, further improving the stability and consistency of the outlet pressure.

[0055] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A dispensing pressure regulating mechanism for a photovoltaic module, comprising: A base (3) 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); the lower end of a vertically extending top rod (9) is connected to the first mounting seat The guide seat (71) is connected to the guide seat (4), 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 guide seat (4) and the push rod (9) are sealed by at least one universal seal ring (151), 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 drive chamber (20) of a cylinder body (19) and is connected to a piston disc (21) horizontally arranged in the drive 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 drive 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 is located in the tube body (1 A plurality of liquid outlet holes (25) are provided on the outer surface of the annular portion (142) of the connecting nozzle (14) below the tube body (141) and having an inner diameter larger than that of the tube body (141). The plug (11) comprises: a main body (111) slidably embedded in the annular portion (142), a ball head (112) formed in the center of the upper surface of the main body (111) and embedded in the tube body (141), and a columnar portion (113) extending downward from the center of the lower surface of the main body (111). The upper surface of the main body (111) has an annular groove (115) around the ball head (112), the column (113) is embedded in the second mounting hole (24) on the upper surface of the second mounting seat (72) and is loosely matched with the inner wall of the second mounting hole (24), and the main body (111) is provided with a radially outward flange (114) below the connecting nozzle (14), and the lower surface of the flange (114) is aligned with the inner wall of the second mounting seat (72). The upper surface is fitted, and 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). 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) connecting 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 dispensing pressure regulating mechanism for photovoltaic modules according to claim 1, characterized in that: Two universal seal rings (151) are provided, and a pressure ring (152) and a first retaining ring (153) are sequentially stacked below the two stacked universal seal rings (151).

3. The dispensing pressure regulating mechanism for photovoltaic modules according to claim 2, characterized in that: The universal seal ring (151), the pressure ring (152) and the retaining ring (153) are each mounted on the top rod (9) and tightly fitted with the inner wall of the guide seat (4).

4. The dispensing pressure regulating mechanism for photovoltaic modules according to claim 1, characterized in that: The inner wall of the annular groove (115) is an arc-shaped surface or a hemispherical surface.

5. The dispensing pressure regulating mechanism for photovoltaic modules according to claim 1, characterized in that: There are four liquid outlet through holes (25) arranged at intervals along the circumferential direction.

6. The dispensing pressure regulating mechanism for photovoltaic modules according to claim 1, characterized in that: The ball head (112) is configured to be hemispherical.

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