Piezoelectric injection valve

Abstract

The piezoelectric injection valve comprises a mounting frame, a valve body is arranged below the mounting frame, a heating device is arranged on one side of the mounting frame, the heating device comprises a heating cylinder, a limiting block, a sealing cover and a heating cavity, the sealing cover is installed at the top end of the heating cylinder, the heating cavity is formed in the heating cylinder, and one side of the sealing cover is connected with a speed adjusting device. The speed adjusting device comprises a connecting pipe, a control sleeve, a fixing pipe, an ejector rod, a fixing frame, a threaded sleeve, a threaded rod, a limiting frame, an ejector block and an elastic plate, the ejector rod is arranged on the fixing frame, the threaded sleeve is connected with the control sleeve through the limiting frame, the ejector block is connected to one end of the threaded rod, the elastic plate moves on the inner wall of the fixing pipe, and a locking mechanism is arranged on the outer side of the fixing pipe. The locking mechanism comprises a locking sleeve, a locking rod, locking grooves and a connecting spring, one end of the locking rod is connected with the outer wall of the control sleeve through the connecting spring, the multiple locking grooves are formed in the outer side of the fixing pipe, a stable and reliable temperature guarantee environment is provided for the glue barrel, and normal operation of equipment is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to piezoelectric hot melt adhesive injection valve technical field, more specifically, it relates to a piezoelectric injection valve. BACKGROUND

[0002] In the rapid development process of piezoelectric injection valve technology, with the continuous improvement of product process requirements, higher technical requirements are put forward to the glue spraying precision and stability of piezoelectric injection valve, however, the existing piezoelectric injection valve in the actual application process faces multiple technical problems, which seriously restricts the improvement of product quality and production efficiency.

[0003] The primary technical problem is the high sensitivity of piezoelectric injection valve to the temperature of working environment, in the current mainstream piezoelectric injection valve design, there is no targeted temperature regulation mechanism, this technical defect is particularly prominent in low temperature environment, when the environmental temperature decreases to a lower level, the viscosity of glue liquid in piezoelectric injection valve will increase significantly, the fluidity will decrease sharply, this change of physical properties directly leads to the increase of flow resistance of glue liquid in the delivery channel, more seriously, the glue liquid with too high viscosity is easy to form solidification accumulation at the nozzle, with the gradual increase of accumulation, the nozzle is finally completely blocked, this blockage not only causes the interruption of glue spraying, seriously affects the production continuity, but also may lead to uneven glue spraying, unstable glue spraying amount and other quality problems, which brings significant economic loss to enterprises.

[0004] Secondly, the technical scheme of water bath heating device tried by some enterprises in the industry to improve this problem also has obvious defects, although these so-called improved equipment introduces water bath heating mechanism, tries to adjust the glue temperature through heat exchange, but the internal structure design of its delivery pipeline is too simple and rough, this structural limitation directly leads to the inability to accurately control the water inlet and outlet speed, so that the heating system lacks the necessary temperature regulation accuracy and flexibility, in actual application, this design defect shows that the heating temperature is difficult to accurately control, the heating speed cannot be adjusted according to actual demand, which may lead to overheating or too low temperature, seriously affects the stability and reliability of heating effect, finally leads to inaccurate glue temperature control, affects the glue spraying quality.

[0005] More troublesome is that some devices although add speed regulating device to realize flexible adjustment to water inlet and outlet speed, try to control heating temperature accurately through this way, but this kind of improved design still has fundamental engineering defects, although the device can realize accurate regulation of flow rate in theory, but its structure design is too simple, lacks the necessary anti-loosening fixing mechanism, in the process of equipment operation, especially in the face of frequent equipment movement or continuous vibration impact, the adjusting structure is prone to loosening and displacement, once the position of the adjusting device is offset, the originally carefully adjusted water flow rate will change, resulting in heating temperature fluctuation, seriously affecting the normal working state of the piezoelectric injection valve, and bringing unpredictable negative effects to product quality. Practical new type content

[0006] (I) technical problems solved

[0007] In view of the problems existing in the prior art, the utility model provides a piezoelectric injection valve to solve the technical problems mentioned in the background art.

[0008] (II) technical scheme

[0009] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a piezoelectric injection valve, including mounting frame, the mounting frame below is equipped with valve body, its characterized in that: the mounting frame one side is provided with heating device, the heating device includes heating cylinder, limit block, sealing cover and heating cavity, the heating cylinder is installed above the valve body, the limit block is arranged above the heating cylinder, the sealing cover is detachably installed at the top end of the heating cylinder, the heating cavity is opened in the inside of the heating cylinder, the sealing cover one side is connected with speed regulating device, the speed regulating device includes connecting pipe, control sleeve, fixed pipe, jacks, fixed frame, screw sleeve, screw rod, limit frame, top block and elastic plate, the control sleeve both ends are rotationally connected with connecting pipe and fixed pipe respectively, the jacks are slidably arranged on the fixed frame, the fixed frame is fixedly arranged in the fixed pipe, the screw sleeve is fixedly connected with the inner wall of control sleeve through the limit frame, the screw rod is movably arranged in the screw sleeve through the thread, the top block is fixedly connected at one end of the screw rod, the elastic plate is movably connected with the inner wall of fixed pipe, the fixed pipe outside is provided with locking mechanism, the locking mechanism includes locking sleeve, locking rod, locking slot and connecting spring, the locking sleeve is movably sleeved on the outside of fixed pipe through the thread, the locking rod one end is connected with the outer wall of control sleeve through the connecting spring, the locking rod other end is inserted into the locking slot, and a plurality of locking slots are opened in the outside of fixed pipe.

[0010] The utility model further sets up that, one side of top block is connected with sliding frame, sliding block is fixedly arranged on the outside of sliding frame, sliding groove is correspondingly opened in the inside of fixed pipe, and the sliding groove is matched with sliding block.

[0011] The utility model further sets up, one side of elastic sheet is connected with push spring, and the both ends of push spring are connected with the outside of elastic sheet and the inner wall of fixed pipe respectively, a plurality of antiskid strips are arranged outside the locking sleeve and the control sleeve.

[0012] The utility model further sets up, one end of one fixed pipe is connected with water inlet pipe, one end of one connecting pipe is connected with water outlet pipe, and a sealing strip is arranged on one side of the sealing cover.

[0013] The utility model further sets up, heat conducting pipe is arranged in the heating cavity, one end of heat conducting pipe is connected with one end of the connecting pipe on the side of water inlet pipe, and the design that one end of heat conducting pipe extends into the heating cavity can guarantee the accuracy of heating and guarantee to realize uniform heating.

[0014] The utility model further sets up, one side of the mounting frame is equipped with first clamping ring, one side of first clamping ring is equipped with second clamping ring, and the arrangement of above-mentioned components realizes the installation of glue barrel.

[0015] The utility model further sets up, both sides of first clamping ring are equipped with pivot, first clamping ring and second clamping ring are rotatably connected through one pivot, one side of the pivot is connected with cooperation rod, one side of second clamping ring is equipped with cooperation sleeve, and cooperation sleeve and cooperation rod are movably connected through screw thread, and the arrangement of above-mentioned components can realize the convenient replacement of glue barrel.

[0016] The utility model further sets up, cooperation sleeve is fixedly provided with rotating plate outside, and the design of rotating plate facilitates the use of cooperation sleeve.

[0017] (Three) beneficial effects

[0018] Compared with the prior art, the utility model provides a piezoelectric injection valve, which has the following beneficial effects:

[0019] 1, the heating device passes through the innovative water bath heating design, and the key technical problem of traditional piezoelectric injection valve temperature control is ingeniously solved, the cooperative design of heating cylinder, heating cavity and heat conducting pipe and other components realizes the uniform heating of glue barrel, and the cooperation of sealing cover and sealing strip prevents heat loss and water leakage, not only significantly improves the temperature uniformity of heating system, but also greatly enhances the heat energy utilization rate, and completely overcomes the technical bottleneck of traditional heating scheme, temperature fluctuation and low heat conduction efficiency.

[0020] 2、The speed regulating device realizes flexible adjustment of the in-out speed of heated water through precise mechanical structure design, the cooperative linkage of the control sleeve, the screw sleeve, the screw rod, the top block and the sliding frame and other components, and a high-precision flow regulating system is constructed, the through volume of the heated water can be timely responded and accurately adjusted, the device not only significantly improves the regulating precision, but also endows the system with the ability of dynamically adapting to different production process requirements, effectively solves the technical problem that the in-out water speed cannot be flexibly adjusted in the prior art, provides an unprecedented flexible regulating mechanism for temperature control of the piezoelectric injection valve, and ensures the accuracy of temperature control.

[0021] 3、The locking mechanism solves the key problem of position stability of the speed regulating device through the precise cooperation of the locking sleeve, the locking rod, the locking groove and the connecting spring, and innovatively solves the key problem of position stability of the speed regulating device, and reliably fixes the position of the control sleeve after the speed of the heated water is adjusted, prevents accidental changes of parameters caused by external vibration or equipment movement, ensures the high stability of the regulating structure, and significantly improves the convenience and reliability of operation, compared with the traditional loose and variable regulating device, the locking mechanism accurately locks and keeps the regulating parameters, and completely eliminates production fluctuations caused by unstable structure, and provides more reliable temperature control guarantee for the piezoelectric injection valve. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a whole structure schematic view of a piezoelectric injection valve in the utility model;

[0023] Figure 2 It is a sectional structure schematic view of a heating cylinder part in the utility model;

[0024] Figure 3 It is Figure 2 It is a local enlarged structure schematic view of position A in the utility model;

[0025] Figure 4 It is a sectional structure schematic view of a speed regulating device and a locking mechanism part in the utility model;

[0026] Figure 5 It is Figure 4 It is a local enlarged structure schematic view of position B in the utility model;

[0027] Figure 6 It is a sectional structure schematic view of a speed regulating device and a locking mechanism part in the utility model.

[0028] In the figure: 1, mounting frame; 2, valve body; 3, heating cylinder; 4, limiting block; 5, sealing cover; 6, heating cavity; 7, connecting pipe; 8, control sleeve; 9, fixed pipe; 10, jacking rod; 11, fixing frame; 12, screw sleeve; 13, screw rod; 14, limiting frame; 15, top block; 16, elastic plate; 17, locking sleeve; 18, locking rod; 19, locking groove; 20, connecting spring; 21, sliding frame; 22, sliding block; 23, sliding groove; 24, push spring; 25, anti-skid bar; 26, water inlet pipe; 27, water outlet pipe; 28, sealing strip; 29, heat conducting pipe; 30, first clamping ring; 31, second clamping ring; 32, rotating shaft; 33, matching rod; 34, matching sleeve; 35, rotating plate. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0031] In the present application, unless otherwise specified, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravitational direction; similarly, for the convenience of understanding and description, "left, right" are generally with respect to the left and right shown in the drawings; "inner, outer" refer to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0032] Please refer to Figures 1-6The utility model provides a piezoelectric injection valve, including the mounting frame 1, be equipped with the valve body 2 below the mounting frame 1, one side of mounting frame 1 is provided with heating device, and heating device includes heating cylinder 3, limit block 4, sealing cover 5 and heating cavity 6, heating cylinder 3 is installed above valve body 2, limit block 4 is set above heating cylinder 3, sealing cover 5 is detachably installed at the top end of heating cylinder 3, and heating cavity 6 is set up in the inside of heating cylinder 3, one side of sealing cover 5 is connected with speed regulation device, and speed regulation device includes connecting pipe 7, control sleeve 8, fixed pipe 9, top rod 10, fixed frame 11, screw nut 12, screw rod 13, limit frame 14, top block 15 and elastic plate 16, and control sleeve 8 both ends are rotatably connected with connecting pipe 7 and fixed pipe 9, and top rod 10 is slidably arranged on fixed frame 11, and fixed frame 11 is fixedly arranged in fixed pipe 9, and screw nut 12 is fixedly connected with the inner wall of control sleeve 8 through limit frame 14, and screw rod 13 is movably arranged in screw nut 12 through screw thread, and top block 15 is fixedly connected at one end of screw rod 13, and elastic plate 16 is movably connected with the inner wall of fixed pipe 9, and the outer side of fixed pipe 9 is provided with locking mechanism, and locking mechanism includes locking sleeve 17, locking rod 18, locking groove 19 and connecting spring 20, locking sleeve 17 is movably sleeved on the outer side of fixed pipe 9 through screw thread, one end of locking rod 18 is connected with the outer wall of control sleeve 8 through connecting spring 20, the other end of locking rod 18 is inserted into locking groove 19, and a plurality of locking grooves 19 are set up on the outer side of fixed pipe 9.

[0033] One side of top block 15 is connected with sliding frame 21, and sliding block 22 is fixedly arranged on the outer side of sliding frame 21, and sliding groove 23 is correspondingly arranged on the inner side of fixed pipe 9, and sliding groove 23 is matched with sliding block 22.

[0034] Push spring 24 is connected on one side of elastic plate 16, and the both ends of push spring 24 are connected with the outer side of elastic plate 16 and the inner wall of fixed pipe 9 respectively, and a plurality of antiskid strips 25 are connected on the outer sides of locking sleeve 17 and control sleeve 8.

[0035] When the water inlet and outlet speed of the heated water needs to be adjusted in the embodiment, first rotate the locking sleeve 17, the locking sleeve 17 is arranged on the outside of the fixed tube 9 in the thread rotation, then the inner wall of the locking sleeve 17 no longer limits the outer end of the locking rod 18, then rotate the control sleeve 8, the control sleeve 8 moves the locking rod 18 which is arranged on the side wall in sliding, then one end of the locking rod 18 is extruded by the side wall of the locking groove 19, because of the round angle design of the edge of the locking groove 19 and the round angle processing of the end of the locking rod 18, then one end of the locking rod 18 slides out of the locking groove 19, and the other end of the locking rod 18 stretches the connecting spring 20, at the same time, the control sleeve 8 rotates the screw sleeve 12 through the limiting frame 14, because the screw rod 13 and the screw sleeve 12 are movably connected through the thread, and the sliding block 22 and the sliding groove 23 cooperate to limit the screw rod 13 through the sliding frame 21, so that the screw rod 13 does not rotate, then the screw rod 13 drives the sliding frame 21 and the sliding block 22 to slide along the sliding groove 23, at the same time, the screw rod 13 drives the top block 15 to move, so that the top block 15 pushes the top rod 10, then the top rod 10 slides along the slot in the inside of the fixed frame 11, then the other end of the top rod 10 pushes the elastic plate 16 to expand outward, at the same time, the elastic plate 16 extrudes the push spring 24 connected on the other side, so that the gap between the elastic plates 16 changes, and the cross-sectional area of the corresponding position in the fixed tube 9 changes, thereby changing the passing volume of the heated water, and further changing the water inlet and outlet speed of the heated water, so as to achieve the purpose of flexibly adjusting the heating speed and the heating temperature. After adjusting, stop rotating the control sleeve 8, and reset the connecting spring 20 to drive the locking rod 18, then one end of the locking rod 18 is inserted into the corresponding locking groove 19, then rotate the locking sleeve 17 in the opposite direction, so that the locking sleeve 17 resets the thread arranged on the outside of the fixed tube 9, then the inner wall of the locking sleeve 17 limits the outer end of the locking rod 18 again, so as to prevent the adjusted water inlet and outlet speed from changing. The anti-skid strips 25 arranged on the outside of the locking sleeve 17 and the control sleeve 8 can effectively improve the operation feeling and anti-skid performance.

[0036] Please refer to Figures 1-4 , as a further embodiment of the whole device: one end of the fixed tube 9 is connected with the water inlet pipe 26, one end of the connecting pipe 7 is connected with the water outlet pipe 27, and the sealing strip 28 is fixed on one side of the sealing cover 5.

[0037] The heat conduction pipe 29 is arranged in the heating cavity 6, one end of the heat conduction pipe 29 is connected with one end of the connecting pipe 7 on one side of the water inlet pipe 26.

[0038] The first clamping ring 30 is arranged on one side of the mounting frame 1, and the second clamping ring 31 is arranged on one side of the first clamping ring 30.

[0039] The first clamping ring 30 is provided with a rotating shaft 32 on both sides, and the first clamping ring 30 and the second clamping ring 31 are rotatably connected through one rotating shaft 32, and the other rotating shaft 32 is connected with a matching rod 33 on one side, and the second clamping ring 31 is provided with a matching sleeve 34 on one side, and the matching sleeve 34 and the matching rod 33 are movably connected through threads.

[0040] The outer side of the matching sleeve 34 is fixedly provided with a rotating plate 35.

[0041] More specifically, when the glue bucket needs to be installed, first, rotate the rotating plate 35 provided on one side of the limiting block 4, so that the rotating plate 35 drives the matching sleeve 34 to rotate, since the matching sleeve 34 is detachably sleeved on the outer side of the matching rod 33 through threads, then the matching sleeve 34 is separated from the outer side of the matching rod 33, then the matching rod 33 is bent outward, so that the matching rod 33 is turned out, then the second clamping ring 31 is bent, so that the second clamping ring 31 is rotated along the other side of the first clamping ring 30 The rotating shaft 32 is turned on, and then the limiting block 4 is removed, and then the glue bucket is installed in the heating cylinder 3, and then the limiting block 4 is placed on one side of the sealing cover 5, and then the above steps are reversed to fix the limiting block 4 through the first clamping ring 30 and the second clamping ring 31, and the glue bucket is connected with the external pressure equipment through the hole formed in the inner side of the limiting block 4. When the glue bucket needs to be heated to ensure that it is at the appropriate temperature, the external heating equipment and the conveying equipment connected to one end of the water inlet pipe 26 are opened, so that the conveying equipment conveys the heated water in the water inlet pipe 26 to the heat conducting pipe 29, and then the heat conducting pipe 29 is preliminarily preheated to the outer side of the glue bucket, and then the heated water in the heat conducting pipe 29 is conveyed to the heating cavity 6 formed in the inner side of the heating cylinder 3, realizing water bath heating of the glue bucket. When the heated water in the heating cavity 6 is full, the heated water is re-inflused into the external heating equipment through the water outlet pipe 27, realizing the recycling of the heated water, and the sealing strip 28 provided on one side of the sealing cover 5 prevents the heated water from leaking from the joint.

[0042] In summary, when the whole device is in use or operation: when the water inlet and outlet speed of the heated water needs to be adjusted, first rotate the locking sleeve 17, the locking sleeve 17 will be arranged on the outside of the fixed pipe 9 along the thread rotation, then the inner wall of the locking sleeve 17 no longer limits the outer end of the locking rod 18, then rotate the control sleeve 8, the control sleeve 8 will move the locking rod 18 arranged on the side wall, then the locking groove 19 side wall extrudes one end of the locking rod 18, due to the round corner design at the edge of the locking groove 19 and the round corner processing of the end of the locking rod 18, then one end of the locking rod 18 will slide out of the locking groove 19, and the other end of the locking rod 18 will stretch the connecting spring 20, at the same time the control sleeve 8 will rotate the screw sleeve 12 through the limiting frame 14, because the screw rod 13 and the screw sleeve 12 are movably connected through the thread, and the sliding block 22 and the sliding groove 23 cooperate to limit the screw rod 13 through the sliding frame 21, so that the screw rod 13 will not rotate, then the screw rod 13 will drive the sliding frame 21 and the sliding block 22 to slide along the sliding groove 23, at the same time the screw rod 13 will drive the top block 15 to move, so that the top block 15 pushes the top rod 10, then the top rod 10 will slide along the slot inside the fixed frame 11, then the other end of the top rod 10 will push the elastic plate 16 to expand outward, at the same time the elastic plate 16 will extrude the push spring 24 connected on the other side, so that the gap between the elastic plates 16 changes, and the cross-sectional area of the corresponding position in the fixed pipe 9 changes, thereby changing the passing volume of the heated water, and further changing the water inlet and outlet speed of the heated water, achieving the purpose of flexibly adjusting the heating speed and heating temperature, after adjusting appropriately, stop rotating the control sleeve 8, and make the connecting spring 20 drive the locking rod 18 to reset, then one end of the locking rod 18 will be inserted into the corresponding locking groove 19, then rotate the locking sleeve 17 in the opposite direction, so that the locking sleeve 17 resets the thread arranged on the outside of the fixed pipe 9, then the inner wall of the locking sleeve 17 will limit the outer end of the locking rod 18 again, so as to prevent the adjusted water inlet and outlet speed from changing, the anti-skid strips 25 arranged on the outside of the locking sleeve 17 and the control sleeve 8 can effectively improve the operation feeling and anti-skid performance.

[0043] When the glue bucket needs to be installed, first rotate the rotating plate 35 arranged on one side of the limiting block 4, so that the rotating plate 35 drives the cooperating sleeve 34 to rotate, since the cooperating sleeve 34 is detachably sleeved outside the cooperating rod 33 through the thread, then the cooperating sleeve 34 is separated from the cooperating rod 33, then the cooperating rod 33 is pried outward, so that the cooperating rod 33 is rotated out, then the second collar 31 is pried, so that the second collar 31 is rotated along the other side of the first collar 30 connected with the rotating shaft 32, the second collar 31 is opened, then the limiting block 4 is translated and removed, then the glue bucket is installed in the heating cylinder 3, then the limiting block 4 is placed on one side of the sealing cover 5, then the above steps are reversed to fix the limiting block 4 through the first collar 30 and the second collar 31, and the glue bucket is connected with the external pressure equipment through the hole arranged in the inner side of the limiting block 4, when the glue bucket needs to be heated to ensure that it is at a suitable temperature, the external heating equipment and the conveying equipment connected with one end of the water inlet pipe 26 are opened, so that the conveying equipment conveys the heated water in the water inlet pipe 26 into the heat conducting pipe 29, then the heat conducting pipe 29 is preliminarily preheated outside the glue bucket, then the heated water in the heat conducting pipe 29 is conveyed into the heating cavity 6 arranged in the inner side of the heating cylinder 3, realizing water bath heating of the glue bucket, when the heated water in the heating cavity 6 is full, the heated water is re-inflused into the external heating equipment through the water outlet pipe 27, realizing the recycling of the heated water, and the sealing strip 28 arranged on one side of the sealing cover 5 prevents the heated water from leaking from the joint.

[0044] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which will not be described one by one, and the welding is preferred for the fixed connection in the above-mentioned solutions. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A piezoelectric injection valve comprising a mounting frame (1) under which a valve body (2) is arranged, characterized in that: The mounting frame (1) is provided with a heating device on one side, the heating device comprises a heating cylinder (3), a limiting block (4), a sealing cover (5) and a heating cavity (6), the limiting block (4) is arranged above the heating cylinder (3), the sealing cover (5) is installed at the top end of the heating cylinder (3), the heating cavity (6) is opened in the heating cylinder (3), the sealing cover (5) is connected with a speed regulating device on one side, the speed regulating device comprises a connecting pipe (7), a control sleeve (8), a fixed pipe (9), a top rod (10), a fixed frame (11), a screw sleeve (12), a screw rod (13), a limiting frame (14), a top block (15) and an elastic plate (16), the top rod (10) is arranged on the fixed frame (11), the fixed frame (11) is arranged in the fixed pipe (9), the screw sleeve (12) is connected with the control sleeve (8) through the limiting frame (14), the top block (15) is connected at one end of the screw rod (13), the elastic plate (16) is movably arranged on the inner wall of the fixed pipe (9), the outer side of the fixed pipe (9) is provided with a locking mechanism, the locking mechanism comprises a locking sleeve (17), a locking rod (18), a locking groove (19) and a connecting spring (20), the locking sleeve (17) is sleeved on the outer side of the fixed pipe (9), one end of the locking rod (18) is connected with the outer wall of the control sleeve (8) through the connecting spring (20), and a plurality of locking grooves (19) are arranged on the outer side of the fixed pipe (9).

2. A piezoelectric injection valve according to claim 1, characterised in that: A sliding frame (21) is connected on one side of the top block (15), a sliding block (22) is fixedly arranged on the outer side of the sliding frame (21), and a sliding groove (23) is formed in the inner side of the fixed pipe (9) correspondingly, and the sliding groove (23) is matched with the sliding block (22).

3. A piezoelectric injection valve according to claim 2, characterised in that: A push spring (24) is connected on one side of the elastic plate (16), and the two ends of the push spring (24) are connected with the outer side of the elastic plate (16) and the inner wall of the fixed pipe (9) respectively, a plurality of anti-skid strips (25) are arranged on the outer sides of the locking sleeve (17) and the control sleeve (8).

4. A piezoelectrically actuated valve according to any one of claims 1 to 3 wherein one of the piezoelectric elements is a bimorph. One end of the fixed pipe (9) is connected with a water inlet pipe (26), one end of one connecting pipe (7) is connected with a water outlet pipe (27), and one side of the sealing cover (5) is fixedly provided with a sealing strip (28).

5. A piezoelectric injection valve according to claim 4, characterised in that: A heat conducting pipe (29) is arranged in the heating cavity (6), and one end of the heat conducting pipe (29) is connected with one end of the connecting pipe (7) on one side of the water inlet pipe (26).

6. A piezoelectric injection valve according to claim 5, characterised in that: One side of the mounting frame (1) is provided with a first clamping ring (30), and one side of the first clamping ring (30) is provided with a second clamping ring (31).

7. A piezoelectric injection valve according to claim 6, characterised in that: Both sides of the first clamping ring (30) are provided with rotating shafts (32), the first clamping ring (30) and the second clamping ring (31) are rotatably connected through one of the rotating shafts (32), and one side of the rotating shaft (32) on the other side is provided with a matching rod (33), one side of the second clamping ring (31) is provided with a matching sleeve (34), and the matching sleeve (34) and the matching rod (33) are movably connected through threads.

8. A piezoelectric injection valve according to claim 7, characterised in that: A rotating plate (35) is fixedly arranged on the outer side of the matching sleeve (34).

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