A valve block structure for a hand pump to control the local operation of multiple remotely controlled side valves

Abstract

The present invention discloses a valve block structure for a hand pump to control the local operation of multiple side remote control valves, which includes a hand pump, a control valve block, and control valves; there is at least one hand pump, the output end of the hand pump is connected to the inlet end of the control valve block through an oil circuit, the control valve block has multiple outlet ends, and each outlet end is respectively used to connect and control the control valves through an oil circuit; a pressure regulating mechanism is provided on the control valve block, and the pressure regulating mechanism is used to adapt to the oil supply pressure required by each control valve; a single output mechanism is also provided on the control valve block, and the single output mechanism is used to connect the oil circuit of any control valve and simultaneously cut off the oil circuits of other control valves. The present invention uses a hand pump to supply hydraulic oil for locally driving the valves to specific control valves through a control valve block, thereby realizing the control of multiple side remote control valves with only one local hand pump, reducing the number of hand pumps installed, saving costs, releasing space, and being flexible and simple to install.

Description

Technical Field

[0001] The present invention relates to the technical field of marine equipment, and specifically refers to a valve block structure in which a hand pump controls the local operation of multiple side remote control valves. Background Art

[0002] According to the requirements of classification society specifications: all valves provided with remote control should be configured with local manual operation, independent of the remote operating mechanism. For side valves, the local manual operation device should be permanently connected.

[0003] Conventionally, each side remote control valve is equipped with a local control hand pump, which will result in a large number of hand pumps, causing cost increase. Moreover, it also directly leads to the need for more space to arrange these hand pumps, squeezing the limited effective usable area of the ship.

[0004] Therefore, it is necessary to study a valve block structure in which a hand pump controls the local operation of multiple side remote control valves to solve the above-mentioned problems. Secondly, when using a hand pump to supply oil to multiple remote control valve loads, since the required oil supply pressures of the remote control valves of each load are different, the pressure supply needs to be adjusted according to the working conditions during actual use. However, the existing valve block structures usually do not have a convenient oil supply pressure adjustment mechanism. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems by providing a valve block structure in which a hand pump controls the local operation of multiple side remote control valves. Near the side remote control valves that are close to each other, a hand pump and a control valve block are provided, and multiple side remote control valves are controlled by a control valve block; and the oil pressure required by the load can be conveniently adjusted.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: a valve block structure in which a hand pump controls the local operation of multiple side remote control valves, including a hand pump, a control valve block, and control valves; there is at least one hand pump, the output end of the hand pump is connected to the inlet end of the control valve block through an oil circuit, the control valve block has multiple outlet ends, and each outlet end is respectively used to connect and control the control valves through an oil circuit;

[0007] A pressure regulating mechanism is provided on the control valve block, and the pressure regulating mechanism is used to adapt to the oil supply pressures required by each control valve;

[0008] A single output mechanism is also provided on the control valve block, and the single output mechanism is used to connect the oil circuit of any one control valve and simultaneously cut off the oil circuits of other control valves.

[0009] Further, the pressure regulating mechanism includes a housing, on which an inlet pipe, an outlet pipe and a valve seat are provided. The valve seat is located between the inlet pipe and the outlet pipe for separation. A valve core is provided in cooperation with the valve seat. The valve core is located in the chamber at the end of the inlet pipe and is fastened to the valve seat by a first spring for sealing.

[0010] The piston part that drives the valve core, which pushes the valve core in a direction opposite to the direction in which the first spring drives the valve core to move, is used to open the valve core. The piston part includes a piston rod connected to the valve core, and a piston body is provided at the other end of the piston rod. The piston body is placed in the piston chamber.

[0011] Further, the pressure regulating mechanism further includes a liquid inlet chamber and a control part. The liquid inlet chamber is used to control the hydraulic oil entering the piston chamber to push the piston body.

[0012] The control part controls the opening or closing of the liquid inlet chamber according to the pressure feedback of the outlet pipe.

[0013] Further, the liquid inlet chamber includes a push rod, a second spring, a sealing surface, and a retaining ring; the inlet pipe is connected to the liquid inlet chamber through a liquid inlet pipe. The push rod penetrates the liquid inlet chamber and is slidably connected. At least one oil passage groove is concavely provided on the side wall of the push rod. The lower end of the push rod is connected with the sealing surface, and the sealing surface is placed in the piston chamber; the retaining ring is arranged in the liquid inlet chamber and fixed on the push rod. The second spring is arranged in the liquid inlet chamber and pushes the push rod upward through the retaining ring, so that the sealing surface fits on the inner wall of the piston chamber to form a seal.

[0014] Further, a deformable diaphragm is provided in the control part. The diaphragm divides the control part into an adjustment chamber and a feedback chamber. The upper end of the push rod extends upward and abuts against the lower end surface of the diaphragm. The feedback chamber is communicated with the outlet pipe through a feedback pipe; a third spring is provided in the adjustment chamber. The lower end of the third spring abuts against the upper end surface of the diaphragm, and an adjustment bolt is provided at the upper end of the third spring. The adjustment bolt is threadedly connected to the housing for adjusting the pressure exerted on the diaphragm by the third spring.

[0015] Further, a damping pipe is further provided inside the piston body and the piston rod. The damping pipe is used to communicate the upper chamber of the piston with the outlet pipe. The diameter of the opening at one end of the damping pipe close to the piston body is smaller than that at the other end. The other end of the damping pipe moves up and down with the piston rod and is always placed in the outlet pipe.

[0016] Further, the single output mechanism includes a housing, a sliding plate, and a pull rod. A sliding plate is provided inside the housing along its length direction. A fourth spring is provided at one end of the sliding plate. The sliding plate is provided with a limiting bayonet and a reset bayonet.

[0017] The pull rod passes through the housing and is arranged in a sliding connection. The pull rod cannot rotate. The pull rod includes a reset control rod and a valve control rod. There is one reset control rod, and the number of valve control rods is corresponding to the controlled valves. A pin rod is fixedly arranged on the side wall of the pull rod. The pin rod on the reset control rod is located inside the reset bayonet, and the pin rod of the valve control rod is located inside the limit bayonet. A fifth spring is wound around one end of the pull rod inside the control valve block.

[0018] Further, both the limit bayonet and the reset bayonet are provided with inclined notches that cooperate with the pin rod. The bottom of the inclined notch of the reset bayonet is provided with a straight opening, and the bottom of the inclined notch of the limit bayonet is provided with a side opening for clamping the pin rod.

[0019] Further, one end of the valve control rod inside the control valve block is provided with a valve rod for blocking the oil passage at the outlet end of the control valve block.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The present invention uses a hand-operated pump to supply hydraulic oil for driving the valve locally to a specific control valve through a control valve block, so as to realize the control of multiple side remote control valves with only one local hand-operated pump, reduce the number of hand-operated pumps, save costs, release space, and is flexible and simple to install.

[0022] 2. The local control hand-operated pump of the traditional side remote control valve is limited by space and needs to be arranged at different positions. Each operation requires finding the corresponding local hand-operated pump. Now, the design only needs one hand-operated pump to control multiple side remote control valves, which is more convenient and simple.

[0023] 3. The pressure regulating mechanism provided can be applied to the local control of remote control valves with different pressure grades. When in use, only need to rotate the adjusting bolt to adjust the pressure at the outlet pipe, so as to adjust different hydraulic oil pressures to be applicable to different control valves.

[0024] 4. Each operation should ensure that only the outlet pipe corresponding to the control valve to be adjusted is in the "open" state, and other outlet pipes should be in the "closed" state. In the prior art

[0025] When switching the control valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the control structure of the present invention;

[0027] Figure 2 is the front view and side view of the hand-operated pump of the present invention;

[0028] Figure 3 is a schematic diagram of the internal structure of the pressure regulating mechanism in the control valve block of the present invention;

[0029] Figure 4 For the present invention Figure 1 Internal schematic diagram of a single output mechanism shown in the A-A cross-section in the present invention;

[0030] In the figure: 1, hand-operated pump; 2, control valve block; 3, control valve; 4, inlet end; 5, outlet end; 6, pressure regulating mechanism; 7, single output mechanism; 8, housing; 9, inlet pipe; 10, outlet pipe; 11, valve seat; 12, valve core; 13, first spring; 14, piston rod; 15, piston body; 16, liquid inlet chamber; 17, control part; 18, ejector rod; 19, second spring; 20, sealing surface; 21, retaining ring; 22, liquid inlet pipe; 23, oil passage; 24, diaphragm; 25, regulating chamber; 26, feedback chamber; 27, feedback pipe; 28, third spring; 29, adjusting bolt; 30, damping pipe; 31, outer shell; 32, sliding plate; 33, pull rod; 34, fourth spring; 35, limit bayonet; 36, reset bayonet; 37, pin rod; 38, fifth spring; 39, inclined notch; 40, straight opening; 41, side opening; 42, valve rod. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] Embodiment 1

[0033] A valve block structure for locally operating multiple side remote control valves by one hand-operated pump, as Figure 1 shown, includes a hand-operated pump 1, a control valve block 2, and a control valve 3; at least one hand-operated pump 1 is provided, the output end of the hand-operated pump 1 is connected to the inlet end 4 of the control valve block 2 through an oil circuit, the control valve block 2 is provided with a plurality of outlet ends 5, and each outlet end 5 is respectively used to connect and control the control valve 3 through an oil circuit. By using one hand-operated pump 1 to pump hydraulic oil to a specific control valve 3, a one-to-many design form is realized, which can effectively reduce the number of hand-operated pumps 1 provided and also facilitate the crew to quickly find the hand-operated pump 1 for the control valve 3;

[0034] During specific use, it is necessary to open the oil circuit of the corresponding control valve 3 and close the oil circuits of other control valves 3. In the prior art, the oil circuit of one valve is usually opened manually, and the other oil circuits must be confirmed to be closed before using the hand pump 1. In order to conveniently implement the above control principle, the present invention is provided with a single output mechanism 7 on the control valve block 2. The single output mechanism 7 is used to connect the oil circuit of any control valve 3 and simultaneously cut off the oil circuits of other control valves 3. When in use, it is only necessary to pull the corresponding pull rod 33 of the control valve 3 to open the oil circuit of this circuit, and the action of pulling the pull rod 33 can be linked to control the closure of other oil pipelines.

[0035] like Figure 4 As shown in the figure, Figure 1 The AA section diagram shows the internal cross-sectional structure of the single output mechanism 7. Specifically, the single output mechanism 7 includes a housing 31, a sliding plate 32, and a pull rod 33. The sliding plate 32 is provided along the length of the housing 31. A fourth spring 34 is provided at one end of the sliding plate 32. The sliding plate 32 is provided with a limit stop 35 and a reset stop 36. In the figure, the sliding plate 32 can slide laterally. When in a free state, the sliding plate 32 is forced by the fourth spring 34 to maintain a rightward sliding tendency.

[0036] The pull rod 33 passes through the housing 31 and is slidably connected. The pull rod 33 is restricted to being pulled but not rotated. A pin 37 is fixed to the side wall of the pull rod 33. One end of the pull rod 33 is placed on the outer side of the control valve block 2 and is provided with a handle for pulling. The other end of the pull rod 33 is provided with a valve stem 42 corresponding to the oil circuit of each control valve 3. A fifth spring 38 is wound around one end of the pull rod 33 inside the control valve block 2. In the free state, the fifth spring 38 will push the pull rod 33 to move toward the inside of the control valve block 2 so that the valve stem 42 provided at its end is inserted into the oil circuit (valve seat 11) to close the corresponding oil circuit.

[0037] The pull rod 33 includes a reset control rod and a valve control rod. The reset control rod is provided with a Figure 4 As shown in the middle left end, the number of valve control rods provided corresponds to the control valve 3 , the pin 37 on the reset control rod is located inside the reset bayonet 36 , and the pin 37 of the valve control rod is located inside the limit bayonet 35 .

[0038] The limit bayonet 35 and the reset bayonet 36 are both provided with inclined notches 39 that cooperate with the pin rod 37. The bottom of the inclined notch 39 of the reset bayonet 36 is provided with a straight opening 40, and the bottom of the inclined notch 39 of the limit bayonet 35 is provided with a side opening 41 for clamping the pin rod 37. That is, when in use, pulling any one of the pull rods 33 (including the reset control rod and the valve control rod) can move the sliding plate 32 to the left. That is, when the pull rod 33 is pulled, the pin rod 37 squeezes the sliding plate 32 to the left through the inclined notch 39. When the sliding plate 32 moves to the leftmost end, if any other valve control rod was in the lifted position before this (such as Figure 4 the middle pull rod 33 in

[0039] ), then at this time the side opening 41 just releases the limit on the pin rod 37. Then, under the action of the fifth spring 38, this valve control rod retracts into the control valve block 2 and closes this oil passage; for the pull rod 33 being pulled, when the pin rod 37 of this pull rod 33 corresponds to the position of the side opening 41, the fourth spring 34 pushes the sliding plate 32 to the right, and then the side opening 41 can clamp the pin rod 37 to achieve the limit on this pull rod 33. Thus, the purpose of opening the oil passage that needs to be opened and closing other oil passages at the same time can be achieved with just one pulling operation; the reset bayonet 36 corresponding to the reset control rod does not have a side opening 41. Therefore, when pulling the reset control rod, all other valve control rods can be retracted into the control valve block 2 and then all the oil passages can be closed.

[0040] During actual use, when the control oil pressures required by the respective control valves 3 are different, it is necessary to control the oil pressure of the oil passages at the respective outlet ends 5 through the control valve block 2. Before use, first adjust the oil pressure to the corresponding pressure level through the pressure gauge provided on the control valve block 2 and then operate the corresponding control valve 3; to achieve the control of the oil pressure through the control valve block 2, a pressure regulating mechanism 6 is provided on the control valve block 2, such as Figure 1 shown, the pressure regulating mechanism 6 can be provided on the inlet pipe, or both on the inlet pipe and the oil return pipe;

[0041] such as Figure 3 shown, the pressure regulating mechanism 6 includes a housing 8. The housing 8 is provided with an inlet pipe 9, an outlet pipe 10, and a valve seat 11. The valve seat 1 is located between the inlet pipe 9 and the outlet pipe 10 for separation. A valve core 12 is provided in cooperation with the valve seat 11. The valve core 12 is located in the chamber at the end of the inlet pipe 9 and is pressed tightly against the valve seat 11 by a first spring 13 for sealing; in the free state, the valve core moves upward under the action of the first spring 13 and is clamped into the valve seat 11 to achieve the closing of the pressure regulating mechanism 6 in the free state;

[0042] The piston part that drives the valve core 12, whose direction of pushing the valve core 12 to move is opposite to the direction in which the first spring 13 drives the valve core 12 to move, is used to open the valve core 12. The piston part includes a piston rod 14 connected to the valve core 12, and a piston body 15 is arranged at the other end of the piston rod 14. The piston body 15 is placed in the piston cavity. The opening of the valve core 12 is directly opened by the push of the piston part. When the pressure in the upper cavity of the piston body 15 rises, the piston body 15 is pressed down and moves downward. By pressing down the valve core 12 and the first spring 13 through the piston rod 14, the pressure regulating mechanism 6 is opened so that hydraulic oil can flow from the inlet pipe 9 into the outlet pipe 10.

[0043] Further, the pressure regulating mechanism 6 further includes a liquid inlet cavity 16 and a control part 17. The liquid inlet cavity 16 is used to control the hydraulic oil entering the piston cavity to push the piston body 15; the hydraulic oil enters the upper cavity of the piston part from the liquid inlet pipe 22 through the liquid inlet cavity 16. The liquid inlet pipe 22 communicates the inlet pipe 9 with the liquid inlet cavity 16 so that the hydraulic oil can enter the liquid inlet cavity 16, and the opening or closing of the liquid inlet cavity 16 is controlled by the control part 17 on its upper side;

[0044] The liquid inlet cavity 16 includes a push rod 18, a second spring 19, a sealing surface 20, and a retaining ring 21; the push rod 18 penetrates through the liquid inlet cavity 16 and is slidably connected. A sealing surface 20 is connected to the lower end of the side wall of the push rod 18, and the sealing surface 20 is placed in the piston cavity; the retaining ring 21 is arranged in the liquid inlet cavity 16 and is fixedly arranged on the push rod 18. The second spring 19 is arranged in the liquid inlet cavity 16 and pushes the push rod 18 to move upward through the retaining ring 21, so that the sealing surface 20 fits on the inner wall of the piston cavity to form a seal. In the free state, the second spring 19 pushes the push rod 18 upward on both sides, so that the sealing surface 20 can fit on the inner wall of the piston cavity to seal the liquid inlet cavity 16.

[0045] The control unit 17 is provided with a deformable diaphragm 24 inside. The diaphragm 24 divides the control unit 17 into an adjustment chamber 25 and a feedback chamber 26. The upper end of the ejector rod 18 extends upward and abuts against the lower end face of the diaphragm 24. The feedback chamber 26 is communicated with the outlet pipe 10 through a feedback pipe 27. A third spring 28 is arranged in the adjustment chamber 25. The lower end of the third spring 28 abuts against the upper end face of the diaphragm 24. An adjustment bolt 29 is arranged at the upper end of the third spring 28. The adjustment bolt 29 is threadedly connected with the housing 8 for adjusting the pressure exerted on the diaphragm 24 by the third spring 28. When the third spring 28 presses the diaphragm 24 downward, the ejector rod 18 is pushed to move downward. At least one oil passage 23 is concavely arranged on the side wall of the ejector rod 18. Once the lower end of the oil passage 23 extends into the piston chamber, the hydraulic oil in the liquid inlet chamber 16 can enter the upper chamber of the piston part through the oil passage 23, thereby pushing the valve seat 11 to open. Then the hydraulic oil enters the outlet pipe 10, increasing the pressure in the outlet pipe 10. It can be understood that the opening and closing of the liquid inlet chamber 16 in the free state are controlled by the combined action of the forces exerted on the diaphragm 24 by the third spring 28, the second spring 19, and the feedback pipe 27. The elastic force of the third spring 28 can be adjusted by the adjustment bolt 29, so that the pressure of the hydraulic oil in the outlet pipe 10 can be conveniently controlled and maintained within a relatively stable range.

[0046] A damping pipe 30 is further arranged inside the piston body 15 and the piston rod 14. The damping pipe 30 is used to communicate the upper chamber of the piston with the outlet pipe 10. The diameter of the opening at one end of the damping pipe 30 close to the piston body 15 is smaller than that at the other end. The other end of the damping pipe 30 moves up and down with the piston rod 14 and is always placed in the outlet pipe 10. The damping pipe 30 is used when the pressure in the outlet pipe 10 rises to reach the pressure range and the valve core 12 needs to be closed. That is, when the combined force of the pressure of the hydraulic oil in the outlet pipe 10 acting on the diaphragm 24 and the second spring x is greater than the third spring 28, at this time, the ejector rod 18 moves upward to close the liquid inlet chamber 16, and the hydraulic oil in the inlet pipe 9 no longer enters the upper chamber of the piston part. Due to the existence of the damping pipe 30, the piston presses the hydraulic oil in the upper chamber of the piston part into the outlet pipe 10 through the damping pipe 30 under the push of the first spring 13, realizing the closing of the valve core 12. It can be understood that when the piston body 15 moves upward, the lower chamber of the piston needs to be filled with oil from the outlet pipe 10 to prevent the influence of the vacuum negative pressure phenomenon on the movement of the piston body 15. Similarly, when the valve core 12 is opened, the hydraulic oil in the lower chamber of the piston can be pressed into the outlet pipe 10.

[0047] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A valve block structure for controlling the local operation of multiple remotely controlled side valves by a hand pump, characterized in that It includes a hand pump (1), a control valve block (2), and a control valve (3); there is at least one hand pump (1), the output end of the hand pump (1) is connected to the inlet end (4) of the control valve block (2) through an oil circuit, the control valve block (2) has multiple outlet ends (5), and each outlet end (5) is used to connect and control the control valve (3) through an oil circuit respectively; A pressure regulating mechanism (6) is provided on the control valve block (2), and the pressure regulating mechanism (6) is used to adapt to the oil supply pressure required by each control valve (3); A single output mechanism (7) is also provided on the control valve block (2), and the single output mechanism (7) is used to connect the oil circuit of any one control valve (3) and cut off the oil circuits of other control valves (3) at the same time; The pressure regulating mechanism (6) includes a housing (8), an inlet pipe (9), an outlet pipe (10), and a valve seat (11) are provided on the housing (8), the valve seat (11) is located between the inlet pipe (9) and the outlet pipe (10) for separation, a valve core (12) is provided in cooperation with the valve seat (11), the valve core (12) is located in the chamber at the end of the inlet pipe (9) and the valve core (12) is tightened on the valve seat (11) by a first spring (13) for sealing; The piston part that drives the valve core (12), its moving direction of pushing the valve core (12) is opposite to the moving direction of the first spring (13) driving the valve core (12), and is used to open the valve core (12). The piston part includes a piston rod (14) connected to the valve core (12), and a piston body (15) is provided at the other end of the piston rod (14), and the piston body (15) is placed in the piston chamber; The pressure regulating mechanism (6) further includes a liquid inlet chamber (16) and a control part (17), and the liquid inlet chamber (16) is used to control the hydraulic oil entering the piston chamber to push the piston body (15); The control part (17) controls the opening or closing of the liquid inlet chamber (16) according to the pressure feedback of the outlet pipe (10); The liquid inlet chamber (16) includes a push rod (18), a second spring (19), a sealing surface (20), and a retaining ring (21); the inlet pipe (9) is connected to the liquid inlet chamber (16) through a liquid inlet pipe (22), the push rod (18) penetrates the liquid inlet chamber (16) and is slidably connected, at least one oil passage groove (23) is concavely provided on the side wall of the push rod (18), the lower end of the push rod (18) is connected with a sealing surface (20), and the sealing surface (20) is placed in the piston chamber; the retaining ring (21) is arranged in the liquid inlet chamber (16) and is fixedly arranged on the push rod (18), the second spring (19) is arranged in the liquid inlet chamber (16) and pushes the push rod (18) to move upward through the retaining ring (21), so that the sealing surface (20) fits on the inner wall of the piston chamber to form a seal.

2. The valve block structure for locally operating a plurality of remotely controlled side valves by a hand pump according to claim 1, characterized in that, A deformable diaphragm (24) is provided in the control unit (17). The diaphragm (24) divides the control unit (17) into an adjustment chamber (25) and a feedback chamber (26). The upper end of the ejector rod (18) extends upward and abuts against the lower end face of the diaphragm (24). The feedback chamber (26) is communicated with the outlet pipe (10) through a feedback pipe (27). A third spring (28) is provided in the adjustment chamber (25). The lower end of the third spring (28) abuts against the upper end face of the diaphragm (24). An adjustment bolt (29) is provided at the upper end of the third spring (28). The adjustment bolt (29) is threadedly connected to the housing (8) for adjusting the pressure exerted on the diaphragm (24) by the third spring (28).

3. The valve block structure for local operation of a hand-operated pump controlling multiple remotely controlled side valves, according to claim 1 or 2, wherein A damping pipe (30) is further provided in the piston body (15) and the piston rod (14). The damping pipe (30) is used to communicate the upper chamber of the piston with the outlet pipe (10). The diameter of the opening at one end of the damping pipe (30) close to the piston body (15) is smaller than that of the other end. The other end of the damping pipe (30) moves up and down with the piston rod (14) and is always placed in the outlet pipe (10).

4. The valve block structure for locally operating multiple remotely controlled side valves by a hand pump according to claim 1, characterized in that, The single output mechanism (7) includes a housing (31), a sliding plate (32), and a pull rod (33). A sliding plate (32) is provided inside the housing (31) along its length direction. A fourth spring (34) is provided at one end of the sliding plate (32). A limit bayonet (35) and a reset bayonet (36) are provided on the sliding plate (32). The pull rod (33) passes through the housing (31) and is slidably connected. The pull rod (33) cannot rotate. The pull rod (33) includes a reset control rod and valve control rods. There is one reset control rod. The number of valve control rods is corresponding to the control valves (3). A pin rod (37) is fixedly provided on the side wall of the pull rod (33). The pin rod (37) on the reset control rod is located inside the reset bayonet (36). The pin rod (37) of the valve control rod is located inside the limit bayonet (35). Fifth springs (38) are wound around one end of the pull rod (33) inside the control valve block (2).

5. The valve block structure for locally operating a plurality of side remote control valves by a hand pump according to claim 4, characterized in that, The limit bayonet (35) and the reset bayonet (36) are both provided with inclined notches (39) that cooperate with the pin rod (37). A straight opening (40) is provided at the bottom of the inclined notch (39) of the reset bayonet (36). A side opening (41) for clamping the pin rod (37) is provided at the bottom of the inclined notch (39) of the limit bayonet (35).

6. The valve block structure for locally operating multiple side remote control valves by a hand pump according to claim 4, characterized in that, A valve stem (42) for blocking the oil passage at the outlet end (5) of the control valve block (2) is provided at one end of the valve control rod inside the control valve block (2).

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