Building joint grouting device

Abstract

The application discloses a building gap grouting device and relates to the technical field of grouting construction. The building gap grouting device comprises a screw pump, a hose is communicated with one end of the screw pump, and the building gap grouting device further comprises a grouting head, a valve body assembly and a discharge pipe. The grouting head is provided with a shell, a feeding port and a grouting port, the feeding port is communicated with the other end of the screw pump, the valve body assembly is arranged in the shell and located between the feeding port and the grouting port, and the discharge pipe is communicated between the hose and the screw pump. One end of the discharge pipe, which is away from the screw pump, is provided with a first enlarged cavity. When the valve body assembly is moved, the pressure in the discharge pipe can be increased, the first elastic diaphragm is moved by pressure, the first plugging plug is driven to open the first pressure relief port, pressure relief is completed, the motor and the screw pump do not need to be controlled to reverse, the safety in use is improved, and the abrasion of the screw pump is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of grouting construction, in particular to a building gap grouting device. BACKGROUND

[0002] In the installation process of prefabricated wall panels, sleeve grouting treatment is usually required to fill the gap between the steel bars and the sleeve with grouting material, so as to form a whole with the wall panel and the foundation. In the prior art, a screw grouting pump is commonly used for grouting.

[0003] When grouting is completed, the screw grouting pump usually needs to be pressure-released to reduce the pressure in the pipeline of the device, avoid pipeline burst, reduce the risk when the grouting pipe is disassembled, and reduce the wear of the sealing element. Generally, the motor on the control device is reversed to drive the screw pump to reverse and achieve pressure release.

[0004] The above-mentioned method has the following disadvantages: when there is a large amount of grouting material remaining in the hopper, the screw pump reversal will cause the motor to bear a sudden change in load, which is likely to cause the motor to malfunction, and the repeated rotation of the screw pump will also cause additional wear of the screw pump. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a building gap grouting device to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application is implemented by the following technical scheme: a building gap grouting device, comprising a screw pump, one end of the screw pump being communicated with a hose, further comprising: a grouting head, the grouting head having a shell, a feed inlet and a grouting port, the feed inlet being communicated with the other end of the screw pump; a valve body assembly, the valve body assembly being arranged in the shell and being located between the feed inlet and the grouting port, the valve body assembly being used to open or close the grouting port, and the valve body assembly being capable of moving axially along the shell in the state that the grouting port is closed; a discharge pipe, the discharge pipe being communicated between the hose and the screw pump, one end of the discharge pipe away from the screw pump being provided with a first enlarged cavity; a first pressure release port, the first pressure release port being provided on the discharge pipe and being communicated with the first enlarged cavity; a hollow rod, the hollow rod being installed on the discharge pipe, one end of the hollow rod being communicated with the first enlarged cavity, a sliding rod being slidably arranged in the hollow rod, one end of the hollow rod close to the first enlarged cavity being provided with a first elastic diaphragm, the axis of the first elastic diaphragm being fixed to the sliding rod; a first blocking plug, the first blocking plug being fixed to one end of the sliding rod, the first blocking plug being capable of blocking or opening the first pressure release port.

[0007] Furthermore, a second expansion chamber is provided on the side of the discharge pipe close to the screw pump; a check valve is provided at a position between the first expansion chamber and the second expansion chamber in the discharge pipe, and when the sealing plug of the check valve moves toward the second expansion chamber, the screw pump is separated from the hose, and when the sealing plug of the check valve moves toward the first expansion chamber, the screw pump is connected to the hose; the other end of the hollow rod is connected to the second expansion chamber, and a second elastic diaphragm is provided at one end of the hollow rod close to the second expansion chamber, and the axis of the second elastic diaphragm is fixed to the sliding rod.

[0008] Furthermore, an axial groove is provided on one side of the second expansion chamber, and the axial groove connects the hollow rod and the second expansion chamber; a discharge barrel is provided in the axial groove, and the end of the discharge barrel close to the second expansion chamber is open, and part of the discharge barrel is fixed on the discharge pipe, and there is a certain distance between the part of the discharge barrel that is not fixed to the discharge pipe and the inner wall of the axial groove; a second pressure relief port is provided on the discharge pipe, and the second pressure relief port is connected with the interior of the discharge barrel through a radial hole; a second sealing plug is provided at the end of the sliding rod away from the first expansion chamber, and the second sealing plug has the function of closing or opening the interior of the discharge barrel.

[0009] Furthermore, a cover body is provided at one end of the discharge pipe near the screw pump, a hollow column is fixedly provided in the cover body, one end of the sliding rod passes through the discharge pipe and enters the hollow column; a sleeve cup is fixedly provided on the circumferential surface of the sliding rod in the hollow column, a steel ball is provided between the inner wall of the sleeve cup and the sliding rod, a second through hole is provided on the sleeve cup, a ball groove is provided on the inner wall of the hollow column, and the steel ball can pass through the second through hole and enter the ball groove; a supporting cylinder is provided in the cover body, one end of the supporting cylinder is inserted between the sliding rod and the sleeve cup and contacts the steel ball, and the end surface of the supporting cylinder in contact with the steel ball is an inclined surface; a first rod member is fixedly provided at one end of the supporting cylinder away from the sliding rod, and one end of the first rod member passes through the cover body; a third spring is provided on the outer circumferential surface of the cover body, and the third spring can push the supporting cylinder toward the steel ball.

[0010] Furthermore, a lifting ring is provided on one side of the cover body, a second rod is fixedly provided on the side of the lifting ring close to the cover body, a fourth spring is sleeved on the outer circumference of the second rod, and the fourth spring is used to pull the lifting ring toward the cover body; a baffle is provided on the end of the first rod close to the lifting ring, and the surface of the baffle close to the side of the cover body is in contact with the lifting ring.

[0011] Furthermore, a second spring is provided in the hollow rod, and the second spring is sleeved on the outer circumference of the sliding rod; a second retaining ring is fixed on the sliding rod, one end of the second spring is in contact with the second retaining ring, and the second spring is used to push the sliding rod to move toward the first expansion cavity.

[0012] Further, the valve body assembly comprises a partition plate arranged in the shell, and a third through hole is arranged on the partition plate; a hollow shaft is arranged in the shell, and a closing plug is fixedly arranged on one end of the hollow shaft close to the partition plate, and the closing plug can close or open the third through hole when rotating.

[0013] Further, the hollow shaft is located on one side of the partition plate close to the feeding port, a driving ring is arranged on the outer periphery of the hollow shaft, a first guide groove is arranged on the inner wall of the driving ring, a first guide strip is arranged on the outer periphery of the hollow shaft, and the first guide strip is engaged with the first guide groove, so that the hollow shaft can move along the axial direction of the shell; an annular groove is arranged on the outer periphery of the shell, an arc-shaped through groove is arranged in the radial direction in the annular groove; a rotating ring is rotatably arranged in the annular groove, a connecting rod is fixedly arranged on the outer periphery of the driving ring, the connecting rod passes through the arc-shaped through groove and is fixedly connected with the rotating ring; and a fifth spring is arranged on the outer periphery of the hollow shaft, and the fifth spring is used to press the hollow shaft towards the partition plate.

[0014] Further, a lead screw is arranged in the hollow shaft, one end of the lead screw passes through the shaft center of the partition plate and is threadedly connected with the partition plate; a knob is rotatably arranged on one end of the shell away from the grouting port, the other end of the lead screw is fixedly connected with the knob; a second guide strip is fixedly arranged on the outer periphery of the partition plate, and a second guide groove is arranged on the inner wall of the shell, and the second guide strip is engaged with the second guide groove.

[0015] Further, a pressure sensor is arranged on the discharge pipe, and the pressure sensor is located on one side of the second enlarged cavity away from the check valve, and the pressure sensor is used to detect the pressure in the discharge pipe.

[0016] The present application has the following beneficial effects:

[0017] (1) The building structure gap grouting device, through the discharge pipe, the first pressure relief port arranged in the discharge pipe, the sliding rod driven by the first elastic diaphragm and the first blocking plug, the valve body assembly arranged in the grouting head and capable of moving along the axial direction, when the valve body assembly is moved, the pressure in the discharge pipe can be increased, the first elastic diaphragm is moved by pressing, and then the first blocking plug is opened to open the first pressure relief port, so that the pressure relief is completed, the control motor and the screw pump are not reversed, the safety in use is improved, and the wear of the screw pump is reduced.

[0018] (2) The building structure gap grouting device, through the second pressure relief port arranged in the discharge pipe and the second blocking plug arranged on the other end of the sliding rod, in cooperation with the use of the check valve, when the first blocking plug is opened, the second blocking plug is also opened synchronously to open the second pressure relief port, so that the pressure at the connection between the discharge pipe and the screw pump is reduced, and the safety in use is further improved.

[0019] (3), the building structure gap grouting device, through the end of the slip rod sets up the cup, cup is equipped with steel ball, is equipped with hollow column outside cup, hollow column is equipped with ball groove, when the slip rod moves, steel ball will slip out from the second through hole on the cup, and is clamped in the second through hole and ball groove, thereby limiting the slip rod reset, so as to completely relieve the pressure in the discharge pipe.

[0020] Of course, the implementation of any product of the present application does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 For the overall structure of the device schematic diagram of the present application;

[0022] Figure 2 For the structure schematic diagram of the discharge pipe of the present application;

[0023] Figure 3 For the internal structure of the discharge pipe sectional view of the present application;

[0024] Figure 4 For the structure schematic diagram of the hollow rod and the slip rod of the present application;

[0025] Figure 5 For the structure schematic diagram of the check valve of the present application;

[0026] Figure 6 For the structure schematic diagram of the check valve of the present application; Figure 3 For the enlarged schematic diagram of A area in the present application;

[0027] Figure 7 For the sectional view of the first annular flow channel of the present application;

[0028] Figure 8 For the enlarged schematic diagram of B area in the present application; Figure 3 For the sectional view of the second annular flow channel of the present application;

[0029] Figure 9 For the sectional view of the second annular flow channel of the present application;

[0030] Figure 10 For the enlarged schematic diagram of D area in the present application; Figure 9 For the enlarged schematic diagram of C area in the present application;

[0031] Figure 11 For the enlarged schematic diagram of C area in the present application; Figure 3 For the enlarged schematic diagram of C area in the present application;

[0032] Figure 12 For the cooperation schematic diagram of the pull ring and the second rod and the cover of the present application;

[0033] Figure 13 For the cooperation schematic diagram of the pull ring and the second rod and the cover of the present application;

[0034] Figure 14 For the structure schematic diagram of the grouting head of the present application;

[0035] Figure 15 The internal structure of the grouting head of the application is shown in the sectional view;

[0036] Figure 16 The sectional view of the grouting head of the application is shown at the ring groove;

[0037] Figure 17 The structure of the valve body assembly of the application is shown in the schematic view;

[0038] Figure 18 The schematic view of the cooperation between the lead screw and the valve body assembly of the application is shown.

[0039] In the figure, 1, support plate; 2, hopper; 3, motor; 4, screw pump; 5, hose; 6, discharge pipe; 61, first enlarged cavity; 62, second enlarged cavity; 7, hollow rod; 8, grouting head; 81, shell; 82, feeding port; 83, grouting port; 9, pressure sensor; 10, joint pipe; 11, check valve; 111, sealing plug; 112, valve rod; 113, mounting body; 114, containing cavity; 115, first spring; 116, first check ring; 12, fixing piece; 121, first through hole; 13, necked ring; 14, axial hole; 15, first annular flow channel; 16, first pressure relief port; 17, sliding rod; 171, first sealing plug; 172, first elastic diaphragm; 173, second check ring; 174, second elastic diaphragm; 175, second sealing plug; 176, sleeve cup; 177, second through hole; 178, second spring; 18, second annular flow channel; 19, radial hole; 20, axial groove; 21, discharge cylinder; 22, cover body; 23, hollow column; 231, ball groove; 24, steel ball; 25, abutting cylinder; 26, first rod piece; 261, baffle; 27, third spring; 28, pull ring; 29, second rod piece; 30, fourth spring; 31, ring groove; 311, arc-shaped through groove; 32, connecting rod; 33, driving ring; 331, first guide groove; 34, hollow shaft; 341, first guide strip; 35, sealing plug; 36, partition plate; 361, third through hole; 362, second guide strip; 37, lead screw; 38, knob; 39, second guide groove; 40, second pressure relief port; 41, rotating ring; 42, fifth spring. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0041] In the description of the present application, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery" and the like indicate the orientation or positional relationship, only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0042] The following is based on Figures 1-18 The building structure gap grouting device provided by the embodiment of the present application is described.

[0043] Please refer to Figures 1-6 , and Figure 14 and Figure 15 , the embodiment of the present application provides a technical scheme: a building gap grouting device, comprising a screw pump 4, the screw pump 4 is installed on the support plate 1, and is driven by the motor 3, and a hopper 2 is also fixed above the support plate 1, the bottom end of the hopper 2 is communicated with the screw pump 4, the grouting material temporarily stored in the hopper 2 can be conveyed into the hose 5 through the screw pump 4, and in actual use, universal wheels can be installed at the bottom of the support plate 1 to facilitate movement.

[0044] Combined with Figure 14 and Figure 15 , the device further comprises a grouting head 8, the grouting head 8 has a shell 81, a feeding port 82 and a grouting port 83, the feeding port 82 is communicated with the other end of the screw pump 4, so that the grouting material passes through the shell 81 and is discharged from the grouting port 83 to perform grouting operation.

[0045] And, it further comprises a valve body assembly, the valve body assembly is arranged in the shell 81 and located between the feeding port 82 and the grouting port 83, the valve body assembly is used for opening or closing the grouting port 83, and the valve body assembly can move axially along the shell 81 in the state that the grouting port 83 is closed, at this time, the valve body assembly can push part of the grouting material in the shell 81 to flow back, thereby increasing the pressure in the hose 5.

[0046] In addition, combined with Figure 3 and Figure 6 , a discharge pipe 6 is arranged between the hose 5 and the screw pump 4, the discharge pipe 6 communicates the hose 5 and the screw pump 4, a first enlarged cavity 61 is arranged at the end of the discharge pipe 6 away from the screw pump 4, preferably the first enlarged cavity 61 is annular and the inner diameter is greater than that of the discharge pipe 6, a first pressure relief port 16 is further arranged on the discharge pipe 6 and communicated with the first enlarged cavity 61, the first pressure relief port 16 can discharge the grouting material in the discharge pipe 6, thereby reducing the pressure in the discharge pipe 6.

[0047] And, hollow rod 7 is also installed on discharge pipe 6, one end of hollow rod 7 communicates with first enlarged cavity 61, specifically, hollow rod 7 is parallel to discharge pipe 6, and one end of hollow rod 7 is installed on the end face of first enlarged cavity 61, here, the end face refers to the step part formed by the outer wall of first enlarged cavity 61 relative to the outer circumferential surface of discharge pipe 6, slippage rod 17 is slidably arranged in hollow rod 7, slippage rod 17 can move along the axial direction of hollow rod 7, first elastic diaphragm 172 is arranged at one end of hollow rod 7 close to first enlarged cavity 61, the axial center of first elastic diaphragm 172 is fixedly arranged on slippage rod 17, first elastic diaphragm 172 seals the inside of hollow rod 7, and the grouting material can contact the surface of first elastic diaphragm 172, when the pressure in discharge pipe 6 increases, the grouting material will press the axial center of first elastic diaphragm 172 to move along the axial direction of hollow rod 7, thereby driving slippage rod 17 to move.

[0048] Furthermore, first plugging plug 171 is arranged at one end of slippage rod 17, first plugging plug 171 is fixedly arranged at one end of slippage rod 17, when slippage rod 17 moves, first plugging plug 171 can be driven to move, thereby playing the role of plugging or opening first pressure relief port 16.

[0049] In the embodiment, the user of the device can change the state of the valve body assembly to increase the pressure in discharge pipe 6, the increased pressure forces first elastic diaphragm 172 to act, thereby driving slippage rod 17 and first plugging plug 171 to move, and then opening first pressure relief port 16, so that the grouting material is discharged, and the pressure relief is directly completed. In the prior art, when the pressure relief is needed, the device needs to be returned to the side of the screw pump 4 to control the screw pump 4 to reverse to relieve the pressure, which brings inconvenience to the operation, especially when the distance between the screw pump 4 is far away, and reversing the screw pump 4 also increases the load and wear of the screw pump 4, and reduces the service life of the screw pump 4.

[0050] Reference Figure 6 And Figure 7 Optionally, in order to improve the speed of pressure relief, a plurality of slippage rods 17 can be arranged, the plurality of slippage rods 17 are arranged in corresponding hollow rods 7 around discharge pipe 6, and correspondingly, first elastic diaphragm 172 and first plugging plug 171 are arranged on each slippage rod 17, a plurality of axial holes 14 are arranged on one side of first enlarged cavity 61, the plurality of axial holes 14 correspond to first plugging plug 171 one by one, first annular flow channel 15 is arranged in discharge pipe 6, axial hole 14 and first pressure relief port 16 all communicate with first annular flow channel 15, the grouting material can be collected in first annular flow channel 15 through the plurality of axial holes 14, and discharged through first pressure relief port 16.

[0051] Reference Figure 2 And Figure 3Optionally, in order to facilitate the installation of the hose 5, a joint pipe 10 is installed on the side of the discharge pipe 6 close to the hose 5, and one end of the hose 5 is installed on the joint pipe 10.

[0052] With reference to Figure 3 , Figure 5 , Figure 6 and Figure 8 , in order to avoid the increase of the grouting material pressure during the grouting process, which causes the first elastic diaphragm 172 to act, specifically, when the grouting material pressure increases, the first elastic diaphragm 172 drives the sliding rod 17 to move, thereby opening the first pressure relief port 16, a second enlarged cavity 62 is arranged on the side of the discharge pipe 6 close to the screw pump 4, and the structure of the second enlarged cavity 62 is preferably the same as that of the first enlarged cavity 61.

[0053] Furthermore, in combination with Figure 3 , a check valve 11 is arranged in the discharge pipe 6 between the first enlarged cavity 61 and the second enlarged cavity 62, when the sealing plug 111 of the check valve 11 moves towards the second enlarged cavity 62, the check valve 11 is closed, the screw pump 4 is disconnected from the hose 5, thereby dividing the discharge pipe 6 into a first chamber and a second chamber, the first chamber is always in communication with the grouting head 8, and the second chamber is always in communication with the screw pump 4, when the sealing plug 111 of the check valve 11 moves towards the first enlarged cavity 61, the check valve 11 is opened, and the screw pump 4 is in communication with the hose 5.

[0054] Specifically, in combination with Figure 5 , the sealing plug 111 of the check valve 11 is inserted into the mounting body 113 through the valve rod 112, the neck ring 13 is arranged on one side of the sealing plug 111 and cooperates with the sealing plug 111, the receiving cavity 114 is formed in the mounting body 113, the first spring 115 is arranged in the receiving cavity 114, the first spring 115 is sleeved on the outer circumferential surface of the valve rod 112, the first stop ring 116 is fixedly arranged on the valve rod 112, one end of the first spring 115 is in contact with the first stop ring 116, so as to press the sealing plug 111 towards the neck ring 13, the check valve 11 is fixed in the discharge pipe 6 through the fixing member 12, the first through hole 121 is formed in the fixing member 12, and the grouting material flows out through the first through hole 121.

[0055] Furthermore, in combination with Figure 8The other end of the hollow rod 7 communicates with the second enlarged cavity 62, and the end of the hollow rod 7 close to the second enlarged cavity 62 is provided with a second elastic diaphragm 174. The second elastic diaphragm 174 and the first elastic diaphragm 172 jointly seal the space in the hollow rod 7, so as to avoid that the grouting liquid enters the hollow rod 7. One side of the second elastic diaphragm 174 is in contact with the grouting liquid, and the center of the second elastic diaphragm 174 is fixed to the sliding rod 17. In the process that the grouting material flows to the grouting head 8, the check valve 11 is opened, the pressure of the first cavity and the second cavity is the same, so the first elastic diaphragm 172 and the second elastic diaphragm 174 do not move, and the first pressure relief port 16 is always in a closed state.

[0056] With reference to Figure 2 and Figure 3 In order to facilitate the control of the screw pump 4 to stop working, the pressure sensor 9 is arranged on the discharge pipe 6. The pressure sensor 9 is located on the side of the second enlarged cavity 62 away from the check valve 11. The pressure sensor 9 is used to detect the pressure in the discharge pipe 6. When the valve body assembly is closed, the grouting head 8 stops grouting. At this time, the pressure in the discharge pipe 6 continues to rise. When the set value is reached, the pressure sensor 9 transmits a signal to the controller. The controller controls the motor 3 to stop rotating, and then the screw pump 4 stops rotating, so as to avoid continuing to transport the grouting material. The set value can be adjusted according to the actual use scene, but should not exceed the safe range that the discharge pipe 6 can bear. The feedback control between the controller and the pressure sensor 9 and the motor 3 can be established by a person skilled in the art according to the known technology, and a specific scheme is not described in detail.

[0057] In the use process, when grouting starts, the grouting liquid pushes the sealing plug 111 to compress the first spring 115, so that the sealing plug 111 is separated from the neck ring 13, so that the first cavity and the second cavity in the discharge pipe 6 are communicated, and the grouting material can enter the grouting head 8 through the hose 5. At this time, the first elastic diaphragm 172, when the valve body assembly is closed, the grouting material stops flowing out, and the pressure in the discharge pipe 6 continues to rise to the set value. The controller controls the motor 3 to stop rotating, and the screw pump 4 stops feeding. The valve body assembly in the closed state is moved, so that part of the grouting material in the grouting head 8 flows back. The backflow of the grouting material makes the check valve 11 close. At this time, the first cavity and the second cavity are separated. The valve body assembly is continuously moved, so that the pressure of the first cavity communicated with the grouting head 8 continues to rise, and then the pressure at the first elastic diaphragm 172 is greater than that at the second elastic diaphragm 174. When the pressure difference between the two reaches a certain value, the first elastic diaphragm 172 drives the sliding rod 17 and the first plugging plug 171 to move, so as to open the first pressure relief port 16, and the pressure relief effect is achieved.

[0058] With reference to Figure 3 , Figure 8 , Figure 9 and Figure 10In order to reduce the pressure in the second chamber synchronously, further improve the safety and stability of the device, an axial slot 20 is arranged on one side of the second enlarged chamber 62, which is communicated with the hollow rod 7 and the second enlarged chamber 62, a discharge cylinder 21 is arranged in the axial slot 20, the end of the discharge cylinder 21 close to the second enlarged chamber 62 is open, the axis of the discharge cylinder 21 is parallel to the axial slot 20, and part of the discharge cylinder 21 is fixed on the discharge pipe 6, and the part of the discharge cylinder 21 not fixed on the discharge pipe 6 has a certain gap with the inner wall of the axial slot 20, so that the grouting material can contact the second elastic diaphragm 174 through the gap.

[0059] In addition, in combination with Figure 8 A second pressure relief port 40 is arranged on the discharge pipe 6, which is communicated with the inside of the discharge cylinder 21 through the radial hole 19, and the end of the sliding rod 17 away from the first enlarged chamber 61 is provided with a second blocking plug 175, which can close or open the inside of the discharge cylinder 21, and the position of the second blocking plug 175 needs to meet the condition that when the first blocking plug 171 is closed and the sliding rod 17 closes the first pressure relief port 16, the second blocking plug 175 closes the open end of the discharge cylinder 21, so that the sliding rod 17 can move to synchronously open the first pressure relief port 16 and the discharge cylinder 21, and the grouting material in the second chamber can enter the second pressure relief port 40 through the discharge cylinder 21, thereby playing a pressure relief role.

[0060] Reference Figure 9 Optionally, in order to improve the pressure relief speed of the second chamber, the discharge cylinder 21 can be provided with multiple, and when the axial hole 14 is also provided with multiple, the number of the discharge cylinder 21 should be consistent with that of the axial hole 14, each discharge cylinder 21 corresponds to a second blocking plug 175, a second annular flow channel 18 is arranged in the discharge pipe 6, the multiple discharge cylinders 21 are communicated with the second annular flow channel 18 through the radial hole 19, and the second annular flow channel 18 is communicated with the second pressure relief port 40, so that the grouting material in the second chamber can be gathered in the second annular flow channel 18 through the multiple discharge cylinders 21 and flow out of the second pressure relief port 40.

[0061] Reference Figure 3 , Figure 4 and Figure 11 In order to make the sliding rod 17 remain in place after moving, avoid resetting during pressure relief, and cause incomplete pressure relief, a cover 22 is arranged on the end of the discharge pipe 6 close to the screw pump 4, the cover 22 surrounds the discharge pipe 6, a hollow column 23 is fixed in the cover 22, and one end of the sliding rod 17 penetrates through the discharge pipe 6 and enters the hollow column 23.

[0062] In addition, in combination with Figure 11A sleeve cup 176 is fixed on the circumferential surface of the sliding rod 17 located in the hollow column 23, a steel ball 24 is arranged between the inner wall of the sleeve cup 176 and the sliding rod 17, a second through hole 177 is arranged on the sleeve cup 176, and a ball groove 231 is arranged on the inner wall of the hollow column 23, so that the steel ball 24 can pass through the second through hole 177 and enter the ball groove 231.

[0063] In addition, a bearing cylinder 25 is arranged in the cover body 22, one end of the bearing cylinder 25 is inserted between the sliding rod 17 and the sleeve cup 176 and is in contact with the steel ball 24, and the end surface of the bearing cylinder 25 in contact with the steel ball 24 is an inclined surface. When the sliding rod 17 moves, the steel ball 24 pushes the bearing cylinder 25 to move. When the second through hole 177 is opposite to the ball groove 231, the end surface of the bearing cylinder 25 forces part of the steel ball 24 to enter the ball groove 231, and the other part of the steel ball 24 is clamped in the second through hole 177, thereby limiting the reset of the sliding rod 17 and keeping the sliding rod 17 in place.

[0064] In addition, a bearing cylinder 25 is arranged in the cover body 22, one end of the bearing cylinder 25 is inserted between the sliding rod 17 and the sleeve cup 176 and is in contact with the steel ball 24, and the end surface of the bearing cylinder 25 in contact with the steel ball 24 is an inclined surface. When the sliding rod 17 moves, the steel ball 24 pushes the bearing cylinder 25 to move. When the second through hole 177 is opposite to the ball groove 231, the end surface of the bearing cylinder 25 forces part of the steel ball 24 to enter the ball groove 231, and the other part of the steel ball 24 is clamped in the second through hole 177, thereby limiting the reset of the sliding rod 17 and keeping the sliding rod 17 in place.

[0065] Reference Figure 3 , Figure 11 , Figure 12 and Figure 13 In order to facilitate the reset of the sliding rod 17 after the pressure relief is completed, a pull ring 28 is arranged on one side of the cover body 22, the pull ring 28 is fixed with a second rod 29 close to one side of the cover body 22, the outer circumferential surface of the second rod 29 is sleeved with a fourth spring 30, the fourth spring 30 is used for pulling the pull ring 28 to the cover body 22, and a baffle 261 is arranged on one end of the first rod 26 close to the pull ring 28, the surface of the baffle 261 close to one side of the cover body 22 is in contact with the pull ring 28. When it is necessary to reset the sliding rod 17, the pull ring 28 is pulled axially along the discharge pipe 6 to drive the bearing cylinder 25, so as to release the restriction on the steel ball 24, so that the steel ball 24 falls into the sleeve cup 176 again, thereby releasing the locking of the sliding rod 17, and the pull ring 28 is reset under the action of the fourth spring 30.

[0066] Reference Figure 3 and 6In order to facilitate the reset of the sliding rod 17 after being unlocked, a second spring 178 is arranged in the hollow rod 7, the second spring 178 is sleeved on the outer circumferential surface of the sliding rod 17, a second stop ring 173 is fixed on the sliding rod 17, one end of the second spring 178 is in contact with the second stop ring 173, and the second spring 178 is used to push the sliding rod 17 to move towards the first enlarged cavity 61, thereby providing power for the reset of the sliding rod 17.

[0067] With reference to Figures 14-17 The valve body assembly described above comprises a partition plate 36 arranged in the shell 81, the edge of the partition plate 36 is in contact with the inner wall of the shell 81, and a third through hole 361 is arranged on the partition plate 36, and the grouting material can pass through the third through hole 361 to enter the grouting port 83.

[0068] In addition, a hollow shaft 34 is arranged in the shell 81, and a closing plug 35 is fixed on one end of the hollow shaft 34 close to the partition plate 36, and when the closing plug 35 rotates, it can close or open the third through hole 361.

[0069] Specifically, the third through hole 361 on the partition plate 36 is provided with two, the central angle of a single third through hole 361 is not greater than 90°, the two third through holes 361 are symmetric about the center of the partition plate 36, the closing plug 35 is also provided with two, and the two closing plugs 35 are symmetric about the center of the hollow shaft 34, the end of the hollow shaft 34 is in contact with the surface of the partition plate 36, and the two are coaxial, and when the hollow shaft 34 rotates, the two closing plugs 35 can respectively close or open the corresponding third through hole 361.

[0070] With reference to Figure 15 , Figure 16 and Figure 17 In order to facilitate the rotation of the hollow shaft 34, the hollow shaft 34 is located on one side of the partition plate 36 close to the feeding port 82, a driving ring 33 is sleeved on the outer circumferential surface of the hollow shaft 34, a first guide groove 331 is arranged on the inner wall of the driving ring 33, and a first guide strip 341 is arranged on the outer circumferential surface of the hollow shaft 34, the first guide strip 341 is matched with the first guide groove 331, so that the hollow shaft 34 can move along the axial direction of the shell 81.

[0071] In addition, a ring groove 31 is arranged on the outer circumferential surface of the shell 81, an arc-shaped through groove 311 is arranged in the ring groove 31 in the radial direction, a rotating ring 41 is arranged in the ring groove 31 and rotates, a connecting rod 32 is fixed on the outer circumferential surface of the driving ring 33, the connecting rod 32 passes through the arc-shaped through groove 311 and is fixedly connected with the rotating ring 41, and when the rotating ring 41 rotates, the hollow shaft 34 can be driven to rotate through the driving ring 33.

[0072] In addition, a fifth spring 42 is sleeved on the outer circumferential surface of the hollow shaft 34, one end of the fifth spring 42 is in contact with the driving ring 33, and the fifth spring 42 is used to press the hollow shaft 34 towards the partition plate 36.

[0073] With reference to Figure 15 、 Figure 16 and Figure 18 , in order to drive the valve body assembly to move along the axial direction of the shell 81, a lead screw 37 is arranged in the hollow shaft 34, one end of the lead screw 37 penetrates the shaft of the partition plate 36 and is threadedly connected with the partition plate 36, and a knob 38 is arranged at the end of the shell 81 away from the grouting port 83, the other end of the lead screw 37 is fixedly connected with the knob 38, and a second guide strip 362 is fixedly arranged on the outer circumferential surface of the partition plate 36, and a second guide groove 39 is arranged on the inner wall of the shell 81, and the second guide strip 362 is engaged with the second guide groove 39, so that the second guide strip 362 can slide along the second guide groove 39.

[0074] In the embodiment, the knob 38 is rotated to drive the lead screw 37 to rotate, and the lead screw 37 drives the partition plate 36 and the closure plug 35 to move along the axial direction of the shell 81, so that part of the grouting material in the grouting head 8 flows back.

[0075] In the present application, sealing treatment is required at the sliding connection or rotary connection between structures to avoid leakage of grouting material.

[0076] In use (during work), the motor 3 is started to drive the screw pump 4 to rotate, and the screw pump 4 starts to convey grouting material into the discharge pipe 6, the grouting material with a certain pressure opens the check valve 11, and finally flows into the grouting head 8 and is discharged from the grouting port 83, when it is necessary to stop grouting, the rotary ring 41 is rotated to make the closure plug 35 close the third through hole 361, and as the screw pump 4 continues to operate, the pressure in the discharge pipe 6 increases to a set value, the pressure sensor 9 converts the detection data into a signal and transmits it to the controller, and the motor 3 is controlled to stop rotating, so that the screw pump 4 stops rotating.

[0077] When pressure relief is required, the knob 38 is rotated to drive the valve body assembly to move along the axial direction through the lead screw 37, so that part of the grouting material in the grouting head 8 flows back, at this time the check valve 11 is closed, and the discharge pipe 6 is divided into a first chamber and a second chamber, as the grouting material continues to flow back, the pressure in the first chamber increases and presses the first elastic diaphragm 172, the first elastic diaphragm 172 drives the sliding rod 17 and the first plugging plug 171 to move, thereby opening the first pressure relief port 16, and the grouting material flows out of the first pressure relief port 16, thereby achieving the pressure relief effect.

[0078] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other presenters can develop. It is also possible, however, that only a single element can be present. It is further noted that such a term as "comprising" is intended to mean that the embodiments include the recited elements, but not excluding other elements. "Consisting essentially of when used herein in relation to a composition, means that the composition includes the recited elements, and can include additional elements, so long as the additional elements do not materially alter the basic and novel characteristics of the claimed composition. "Consisting of" when used herein in relation to a composition, means that the composition includes the recited elements, and no additional elements.

[0079] The preferred embodiments of the application disclosed above are only to help explain the principles of the present application. The preferred embodiments do not describe all the details of the present application, nor limit the present application to only the specific embodiments described. It is apparent that many modifications and variations can be made to the present application based on the content of the present disclosure. The present disclosure selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

Claims

1. A building gap grouting device, comprising a screw pump (4), one end of the screw pump (4) being connected to a hose (5), characterized in that: Also includes: A grouting head (8), the grouting head (8) comprising a housing (81), a feed port (82) and a grouting port (83), the feed port (82) being in communication with the other end of the screw pump (4); a valve body assembly, the valve body assembly being arranged in the housing (81) and being located between the feed port (82) and the grouting port (83); the valve body assembly being used to open or close the grouting port (83); and the valve body assembly being capable of axially moving along the housing (81) when the grouting port (83) is closed; A discharge pipe (6), the discharge pipe (6) being connected between the hose (5) and the screw pump (4), and a first expansion cavity (61) being provided at one end of the discharge pipe (6) away from the screw pump (4); A first pressure relief port (16), the first pressure relief port (16) being provided on the discharge pipe (6), and the first pressure relief port (16) being in communication with the first expansion cavity (61); A hollow rod (7), wherein the hollow rod (7) is mounted on the discharge pipe (6), one end of the hollow rod (7) is connected to the first expansion cavity (61), a sliding rod (17) is slidably provided in the hollow rod (7), and a first elastic diaphragm (172) is provided at one end of the hollow rod (7) close to the first expansion cavity (61), and the axis of the first elastic diaphragm (172) is fixed on the sliding rod (17); A first sealing plug (171), the first sealing plug (171) being fixedly mounted on one end of the sliding rod (17), and the first sealing plug (171) being capable of sealing or opening the first pressure relief port (16); A second expansion cavity (62) is provided on a side of the discharge pipe (6) close to the screw pump (4); A check valve (11) is provided in the discharge pipe (6) at a position between the first expansion chamber (61) and the second expansion chamber (62); when the sealing plug of the check valve (11) moves toward the second expansion chamber (62), the screw pump (4) and the hose (5) are disconnected; when the sealing plug of the check valve (11) moves toward the first expansion chamber (61), the screw pump (4) and the hose (5) are connected; The other end of the hollow rod (7) is connected to the second expansion chamber (62), and a second elastic diaphragm (174) is provided at one end of the hollow rod (7) close to the second expansion chamber (62). The axis of the second elastic diaphragm (174) is fixed to the sliding rod (17).

2. A building gap grouting device according to claim 1, characterized in that: An axial groove (20) is provided on one side of the second enlarged cavity (62), and the axial groove (20) communicates with the hollow rod (7) and the second enlarged cavity (62); A discharge barrel (21) is provided in the axial groove (20), and one end of the discharge barrel (21) close to the second expansion cavity (62) is open. A portion of the discharge barrel (21) is fixed to the discharge pipe (6), and a certain distance is formed between the portion of the discharge barrel (21) not fixed to the discharge pipe (6) and the inner wall of the axial groove (20); The discharge pipe (6) is provided with a second pressure relief port (40), and the second pressure relief port (40) is communicated with the interior of the discharge cylinder (21) through a radial hole (19); A second sealing plug (175) is provided at one end of the sliding rod (17) away from the first expansion chamber (61), and the second sealing plug (175) has the function of closing or opening the interior of the discharge barrel (21).

3. A building gap grouting device according to claim 2, characterized in that: A cover body (22) is provided at one end of the discharge pipe (6) close to the screw pump (4), a hollow column (23) is fixedly provided in the cover body (22), and one end of the sliding rod (17) passes through the discharge pipe (6) and enters the hollow column (23); The sliding rod (17) is fixedly provided with a sleeve cup (176) on the circumferential surface of the hollow column (23), a steel ball (24) is provided between the inner wall of the sleeve cup (176) and the sliding rod (17), a second through hole (177) is provided on the sleeve cup (176), and a ball groove (231) is provided on the inner wall of the hollow column (23), and the steel ball (24) can pass through the second through hole (177) and enter the ball groove (231); A supporting tube (25) is provided in the cover body (22), one end of the supporting tube (25) is inserted between the sliding rod (17) and the sleeve cup (176) and contacts the steel ball (24), and the end surface of the supporting tube (25) in contact with the steel ball (24) is an inclined surface; A first rod (26) is fixedly provided at one end of the supporting tube (25) away from the sliding rod (17), and one end of the first rod (26) passes through the cover body (22); The outer peripheral surface of the cover body (22) is sleeved with a third spring (27), and the third spring (27) is capable of pushing the supporting cylinder (25) toward the steel ball (24).

4. A building gap grouting device according to claim 3, characterized in that: A lifting ring (28) is provided on one side of the cover body (22), a second rod (29) is fixedly provided on the side of the lifting ring (28) close to the cover body (22), a fourth spring (30) is sleeved on the outer circumference of the second rod (29), and the fourth spring (30) is used to pull the lifting ring (28) toward the cover body (22); A blocking piece (261) is provided at one end of the first rod (26) close to the lifting ring (28), and a surface of the blocking piece (261) close to the side of the cover body (22) contacts the lifting ring (28).

5. A building gap grouting device according to claim 4, characterized in that: A second spring (178) is provided in the hollow rod (7), and the second spring (178) is sleeved on the outer peripheral surface of the sliding rod (17); A second retaining ring (173) is fixedly provided on the sliding rod (17), one end of the second spring (178) contacts the second retaining ring (173), and the second spring (178) is used to push the sliding rod (17) to move toward the first expansion cavity (61).

6. A building gap grouting device according to claim 1, characterized in that: The valve body assembly comprises: A partition (36), the partition (36) being disposed in the housing (81), and a third through hole (361) being formed on the partition (36); A hollow shaft (34) is disposed in the housing (81), and a closing plug (35) is fixedly provided at one end of the hollow shaft (34) close to the partition (36). When the closing plug (35) rotates, it can close or open the third through hole (361).

7. A building gap grouting device according to claim 6, characterized in that: The hollow shaft (34) is located on a side of the partition (36) close to the feed port (82), a driving ring (33) is sleeved on the outer circumference of the hollow shaft (34), a first guide groove (331) is formed on the inner wall of the driving ring (33), and a first guide bar (341) is provided on the outer circumference of the hollow shaft (34), the first guide bar (341) is engaged with the first guide groove (331), so that the hollow shaft (34) can move along the axial direction of the shell (81); An annular groove (31) is provided on the outer peripheral surface of the housing (81), and an arc-shaped through groove (311) is provided radially inside the annular groove (31); A rotating ring (41) is rotatably provided in the annular groove (31), and a connecting rod (32) is fixedly provided on the outer peripheral surface of the driving ring (33). The connecting rod (32) passes through the arc-shaped through groove (311) and is fixedly connected to the rotating ring (41); The outer circumference of the hollow shaft (34) is sleeved with a fifth spring (42), and the fifth spring (42) is used to press the hollow shaft (34) toward the partition (36).

8. A building gap grouting device according to claim 7, characterized in that: A screw rod (37) is provided in the hollow shaft (34), one end of the screw rod (37) passes through the axis of the partition (36) and is threadedly connected to the partition (36); A knob (38) is rotatably provided at one end of the housing (81) away from the grouting port (83), and the other end of the screw rod (37) is fixedly connected to the knob (38); A second guide strip (362) is fixedly provided on the outer peripheral surface of the partition (36), a second guide groove (39) is provided on the inner wall of the shell (81), and the second guide strip (362) fits in the second guide groove (39).

9. A building gap grouting device according to any one of claims 1 to 8, characterized in that: A pressure sensor (9) is installed on the discharge pipe (6). The pressure sensor (9) is located on a side of the second expansion chamber (62) away from the check valve (11). The pressure sensor (9) is used to detect the pressure in the discharge pipe (6).

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