Beef marinade injection device

Abstract

The invention belongs to the field of beef processing, and discloses a beef marinade injection device, which comprises a pair of vertically placed support plates, a fixing plate is fixed to the upper ends of the two supporting plates, a turnover mechanism is arranged between the two supporting plates, an injection mechanism is arranged over the turnover mechanism, and a conveyor which is horizontally placed and faces the turnover mechanism is arranged at one end of each supporting plate. The turnover mechanism comprises a shaft strip rotationally connected between the two supporting plates, the shaft strip is horizontally arranged and is perpendicular to the conveying direction of the conveyor, two rows of supporting rods which are symmetrically arranged up and down are fixed to the shaft strip, and any row of supporting rods comprise a plurality of supporting rods which are evenly distributed in the axial direction of the shaft strip. The supporting rods are horizontal and are perpendicular to the shaft strip, and the two ends of each supporting rod are symmetrically arranged relative to the shaft strip. The device can realize automatic injection of a marinade solution to beef cubes, can automatically turn over the beef cubes, injects the marinade solution to both sides of the beef cubes, and improves the uniformity of injection of the marinade solution in the beef cubes.

Description

Technical Field

[0001] The invention belongs to the field of beef processing, and in particular relates to a beef marinade injection device. Background Art

[0002] Beef is a common food that can be made into beef jerky, beef cubes, etc.; and in its production process, it is usually necessary to inject various seasonings into the beef for marinating; for example, the Chinese patent with application number CN201811511016.3 discloses a beef marinating injection device, including a conveyor belt, on which a plurality of through holes are formed; a negative pressure box is installed below the conveyor belt; the top of the conveyor belt is open and connected to a gas-liquid mixing pump through a connecting pipe; a gas-liquid mixing pump; a liquid storage box is installed below the conveyor belt; a marinating liquid tank is installed above the conveyor belt; a plurality of needles are installed below the marinating liquid tank; the lower end of the needle is conical and closed; a plurality of liquid outlet holes are formed on the side of the lower end of the needle; the top of the marinating liquid tank is connected to an air supply pipe, which is connected to an air pump; and a push-pull device is also connected above the marinating liquid tank. The present invention has a simple structure, is easy to use, will not block the injection head, can prevent the beef slices from being lifted by the needle, and can be marinated evenly.

[0003] However, the above patent only allows the marinade to be injected on one side of the beef, which may easily cause uneven distribution of the marinade on both sides of the beef, thereby affecting the taste of the beef product; therefore, the prior art has the problem of uneven distribution of the marinade on the beef caused by injecting the marinade on one side. Summary of the invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a beef marinade injection device, which solves the problem of uneven distribution of beef marinade caused by single-sided marinade injection in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A beef marinade injection device comprises a pair of vertically placed support plates;

[0007] A fixed plate is fixed on the upper ends of the two support plates, a flip mechanism is provided between the two support plates, an injection mechanism is provided just above the flip mechanism, and a conveyor is provided at one end of the support plate and is placed horizontally toward the flip mechanism;

[0008] The flipping mechanism includes an axis bar that is rotatably connected between two support plates, the axis bar is placed horizontally, and the axis bar is placed perpendicular to the conveying direction of the conveyor, two rows of support rods that are symmetrically placed up and down are fixed on the axis bar, and any row of support rods includes a plurality of support rods that are evenly distributed along the axis of the axis bar, the support rods are all horizontal and placed perpendicular to the axis bar, and both ends of the support rods are placed symmetrically about the axis bar, and the conveyor is used to convey the beef blocks to between the two rows of support rods where the axis bar is close to the conveyor end, and a first rotating motor is fixed on any support plate, and the output shaft of the first rotating motor rotates through the support plate and is fixed to the axis bar;

[0009] The injection mechanism includes a first liquid storage tank arranged between the shaft and the fixed plate, the first liquid storage tank is in the shape of a sealed shell with a hollow interior, the first liquid storage tank is filled with a marinade solution, two injection parts are arranged at the bottom of the first liquid storage tank, the two injection parts are respectively located on both sides of the shaft, each injection part includes a plurality of injection needles that are evenly distributed, the upper ends of the injection needles are open and connected to the interior of the first liquid storage tank, and the lower ends of the injection needles are provided with liquid outlets on the peripheral walls, an air pump is installed on the fixed plate, an air pipe is connected to the output end of the air pump, and the other end of the air pipe is connected to the first liquid storage tank, and a lifting unit for driving the first liquid storage tank to move up and down is installed on the fixed plate;

[0010] The injection needles all include an injection tube vertically fixed to the bottom of the first liquid storage tank, the upper and lower ends of the injection tube are open, and the upper end of the injection tube is connected with the inside of the first liquid storage tank, the lower end of the injection tube is provided with a convex head with a hollow interior, the convex head is used to seal and block the lower end of the injection tube, the convex head is connected with the injection tube, the liquid outlet is opened on the peripheral wall of the convex head, and the liquid outlet is in the form of a plurality of evenly distributed rings, a coaxially arranged shaft rod is provided inside the injection tube, the lower end of the shaft rod slides through the convex head, the diameter of the shaft rod is smaller than the inner diameter of the injection tube, a conical part with a hollow interior and an open upper end is fixed to the lower end of the shaft rod, the diameter of the outer wall of the upper end of the conical part is equal to the diameter of the outer peripheral wall of the injection tube, and when the upper end of the conical part fits with the lower end of the injection tube, the convex head is received inside the conical part;

[0011] The injection mechanism also includes a first lifting plate placed above the first liquid storage tank, the upper ends of the shafts are all slid through the first liquid storage tank and are fixed to the first lifting plate, a pair of first telescopic cylinders placed vertically upward are fixedly installed on the outer side wall of the first liquid storage tank, and the output ends of the first telescopic cylinders are all fixed to the first lifting plate;

[0012] The upper end of the injection tube extends into the first liquid storage tank, and the upper end surface of the injection tube is higher than the inner bottom surface of the first liquid storage tank;

[0013] The injection mechanism also includes a second lifting plate slidably connected to the first liquid storage tank, the peripheral wall of the second lifting plate is in contact with the inner peripheral wall of the first liquid storage tank, the upper end of the injection tube slides through the second lifting plate, a second telescopic cylinder placed vertically downward is fixed on the inner top surface of the first liquid storage tank, the output end of the second telescopic cylinder is fixed to the upper end of the second lifting plate, the marinade solution is located above the second lifting plate, and the air pipe is always located above the second lifting plate;

[0014] A bottom plate is fixed at the lower ends of the two support plates, and the bottom plate is located below the axis bar. When the support rod is placed vertically, the lower end of the support rod is located above the bottom plate;

[0015] A pair of first rollers are rotatably connected between the two support plates, the first rollers are coaxially placed with the shaft, the two first rollers are symmetrically placed about the vertical plane where the central axis of the shaft is located, a row of transmission wheels are provided on the side of the first roller close to the shaft, any row of transmission wheels includes a plurality of transmission wheels evenly distributed along the axial direction of the shaft, the transmission wheels are coaxially placed with the first rollers, the transmission wheels are located between the gaps between any two adjacent support rods, the transmission wheels are fixedly supported above the bottom plate by support bars, a first annular belt is sleeved between the transmission wheel and the first rollers on the corresponding sides, the upper end surfaces of the first annular belt are flush with the upper end surface of the conveyor, a pair of second rotating motors are fixedly installed on the support plate, the second rotating motors correspond to the first rollers one by one, and the output shafts of the second rotating motors rotate through the support plate and are connected to the corresponding first rollers;

[0016] The lifting unit comprises a pair of third telescopic cylinders vertically fixedly mounted on the fixed plate, and the output ends of the third telescopic cylinders are both fixed to the upper end of the first liquid storage tank;

[0017] A second liquid storage tank is placed on the upper end of the fixed plate. The second liquid storage tank is in the shape of a shell with an upper end open. A water pump is placed in the second liquid storage tank. The output end of the water pump is connected to a water pipe. The other end of the water pipe is connected to the inside of the first liquid storage tank. The water pipe is always located above the second lifting plate.

[0018] The conveyor includes a support frame, on which a pair of second rollers coaxially arranged with the shaft are rotatably connected, a second annular belt is sleeved between the two second rollers, and a third rotating motor for driving any second roller is installed on the support frame.

[0019] Beneficial effects of the present invention:

[0020] 1. The present application can realize automatic injection of marinade solution into beef chunks, can automatically turn over the beef chunks, and can inject marinade solution into both sides of the beef chunks, thereby improving the uniformity of marinade solution injection into the beef chunks;

[0021] In the subsequent processing of the device, when the marinade is injected into the front side of one beef block, the marinade can be injected into the back side of another beef block simultaneously, so that the marinade solution can be injected into two beef blocks at the same time, thereby improving the efficiency of marinade injection.

[0022] 2. The application adopts the coordinated arrangement of the pointed cone, the convex head, the shaft, the first lifting plate and the first telescopic cylinder. When the injection needle pierces the beef block, it can prevent the meat scraps from blocking the liquid outlet and affecting the next injection process. After the injection needle pierces the beef block, the shaft is pushed to drive the pointed cone to move downward, so that the liquid outlet is exposed, and the marinade solution is discharged through the liquid outlet in cooperation with the air pump;

[0023] 3. Through the coordinated arrangement of the second lifting plate, the second telescopic cylinder and the injection tube, the amount of marinade solution discharged from each injection needle during each injection process can be controlled to be the same, thereby improving the uniformity of the injection of the beef marinade solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention from different viewing angles;

[0027] Figure 3 It is a partial structural schematic diagram of the second liquid storage tank of the present invention;

[0028] Figure 4 It is a partial structural schematic diagram of the first rotating roller of the present invention;

[0029] Figure 5 It is a partial structural schematic diagram of the first lifting plate of the present invention;

[0030] Figure 6 It is a partial structural schematic diagram of the second lifting plate of the present invention;

[0031] Figure 7 It is a partial structural schematic diagram of the shaft rod of the present invention;

[0032] Figure 8 It is a partial structural schematic diagram of the liquid outlet of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown, a beef marinade injection device comprises a pair of vertically placed support plates 100;

[0035] A fixing plate 200 is fixed on the upper ends of the two support plates 100, a flip mechanism is provided between the two support plates 100, an injection mechanism is provided just above the flip mechanism, and a conveyor 300 is provided at one end of the support plate 100 and is placed horizontally toward the flip mechanism;

[0036] The flipping mechanism includes an axis bar 401 rotatably connected between two support plates 100, the axis bar 401 is horizontally placed, and the axis bar 401 is placed perpendicularly to the conveying direction of the conveyor 300, two rows of support rods 402 symmetrically placed up and down are fixed on the axis bar 401, any row of support rods 402 includes a plurality of support rods 402 evenly distributed along the axial direction of the axis bar 401, the support rods 402 are horizontal and placed perpendicularly to the axis bar 401, and both ends of the support rods 402 are symmetrically placed about the axis bar 401, and the conveyor 300 is used to convey the beef blocks to between the two rows of support rods 402 at the ends of the axis bar 401 close to the conveyor 300, and a first rotating motor 403 is fixed on any support plate 100, and the output shaft of the first rotating motor 403 rotates through the support plate 100 and is fixed to the axis bar 401;

[0037] The injection mechanism includes a first liquid storage tank 501 disposed between the shaft bar 401 and the fixed plate 200. The first liquid storage tank 501 is in the shape of a sealed shell with a hollow interior. The first liquid storage tank 501 is filled with a marinade solution. Two injection parts are provided at the bottom of the first liquid storage tank 501. The two injection parts are respectively located on both sides of the shaft bar 401. Each injection part includes a plurality of injection needles that are evenly distributed. The upper ends of the injection needles are open and connected to the interior of the first liquid storage tank 501. Liquid outlets 502 are provided on the peripheral walls of the lower ends of the injection needles. An air pump 503 is installed on the fixed plate 200. An air pipe 504 is connected to the output end of the air pump 503. The other end of the air pipe 504 is connected to the first liquid storage tank 501. A lifting unit for driving the first liquid storage tank 501 to move up and down is installed on the fixed plate 200.

[0038] The steps for use are as follows:

[0039] Step 1: Turn on the conveyor 300 and place rectangular blocks of beef on the conveyor 300. Preferably, the beef blocks can be placed on the conveyor 300 in sequence at equal intervals.

[0040] Step 2: The conveyor 300 conveys the beef chunks to the axis 401 between two rows of support rods 402 near the end of the conveyor 300:

[0041] Step 3: The lifting unit drives the first liquid storage tank 501 and the injection needle to move downward, so that the injection needle penetrates into the beef, and then the air pump 503 is turned on. Under the action of air pressure, the marinade solution in the injection needle passes through the liquid outlet 502 and enters the beef, and then the air pump 503 is turned off. At the same time, the lifting unit drives the first liquid storage tank 501 and the injection needle to move upward and reset;

[0042] Step 4: Turn on the first rotating motor 403 to drive the shaft 401 and the support rod 402 to flip 180 degrees;

[0043] Step 5: The conveyor 300 conveys another piece of beef to between two rows of support rods 402 which are now close to the conveyor 300;

[0044] Step 6: Turn on the lifting unit again to drive the injection needle to move downward, and cooperate with the air pump 503 to make the two injection parts inject the marinade solution into the two pieces of beef on both sides of the shaft 401 at the same time. After the injection is completed, turn off the air pump 503 again, and drive the first liquid storage tank 501 and the injection needle to move upward and reset;

[0045] Step 7: Take out the beef which is far away from the conveyor 300 and has been injected with the marinade solution on both sides from between the two rows of support rods 402;

[0046] Step 8: Repeat steps 4 to 7, and repeat them in sequence;

[0047] Through the above process, the marinade solution can be automatically injected into the beef block, the beef block can be automatically turned over, and the marinade solution can be injected into both sides of the beef block, thereby improving the uniformity of the marinade solution injection into the beef block;

[0048] In the subsequent processing of the device, when the marinade is injected into the front side of one beef block, the marinade can be injected into the back side of another beef block simultaneously, so that the marinade solution can be injected into the two beef blocks at the same time, thereby improving the efficiency of the marinade injection work.

[0049] When the injection needle pierces the beef block, in order to prevent meat scraps from clogging the liquid outlet 502 and affecting the next injection process, the injection needle includes an injection tube 505 vertically fixed to the bottom of the first liquid storage tank 501, the upper and lower ends of the injection tube 505 are open, and the upper end of the injection tube 505 is connected to the inside of the first liquid storage tank 501, and the lower end of the injection tube 505 is provided with an internal hollow convex head 506, the convex head 506 is used to seal the lower end of the injection tube 505, the convex head 506 is connected to the injection tube 505, the liquid outlet 502 is opened on the peripheral wall of the convex head 506, and the liquid outlet 502 is a plurality of evenly distributed annularly, and a coaxially arranged shaft rod 507 is provided inside the injection tube 505. The lower end of the rod 507 slides through the convex head 506. The diameter of the shaft 507 is smaller than the inner diameter of the injection tube 505. A pointed cone 508 with a hollow interior and an open upper end is fixed to the lower end of the shaft 507. The diameter of the outer wall of the upper end of the pointed cone 508 is equal to the diameter of the outer peripheral wall of the injection tube 505. When the upper end of the pointed cone 508 is in contact with the lower end of the injection tube 505, the convex head 506 is received in the inside of the pointed cone 508. The setting of the pointed cone 508 makes it easy for the injection needle to penetrate into the beef block. After the injection needle penetrates into the beef block, the shaft 507 is pushed to drive the pointed cone 508 to move downward, so that the liquid outlet 502 is exposed to the outside, and the marinade solution is discharged through the liquid outlet 502 in cooperation with the air pump 503.

[0050] In order to facilitate the control of the lifting and lowering movement of the pointed cone portion 508 in each injection needle, the injection mechanism also includes a first lifting plate 509 placed above the first liquid storage tank 501, the upper ends of the shaft rods 507 slide through the first liquid storage tank 501 and are fixed to the first lifting plate 509, and a pair of first telescopic cylinders 510 placed vertically upward are fixedly installed on the outer wall of the first liquid storage tank 501, and the output ends of the first telescopic cylinders 510 are fixed to the first lifting plate 509; the first lifting plate 509 is controlled by the first telescopic cylinder 510 to move up and down, and the first lifting plate 509 drives each shaft rod 507 and each pointed cone portion 508 to move up and down.

[0051] During each injection process, in order to facilitate the control of the uniform content of the marinade solution injected and discharged from each injection needle, the upper end of the injection tube 505 extends into the first liquid storage tank 501, and the upper end surface of the injection tube 505 is higher than the inner bottom surface of the first liquid storage tank 501;

[0052] The injection mechanism also includes a second lifting plate 511 slidably connected to the first liquid storage tank 501. The peripheral wall of the second lifting plate 511 is in contact with the inner peripheral wall of the first liquid storage tank 501. The upper end of the injection tube 505 slides through the second lifting plate 511. A second telescopic cylinder 512 placed vertically downward is fixed on the inner top surface of the first liquid storage tank 501. The output end of the second telescopic cylinder 512 is fixed to the upper end of the second lifting plate 511. The marinade solution is located above the second lifting plate 511, and the air pipe 504 is always located above the second lifting plate 511. Before each injection, the upper end of the cone 508 is in contact with the lower end of the injection tube 505, and then The second telescopic cylinder 512 drives the second lifting plate 511 to move upward, thereby controlling the upward movement of the marinade solution, so that the liquid level of the marinade solution moves up to the upper end of the injection tube 505. At this time, the marinade solution enters the injection tube 505. After the injection tube 505 is filled, the second telescopic cylinder 512 drives the second lifting plate 511 to move downward, so that the liquid level of the upper end of the marinade solution is lower than the upper end of the injection tube 505. After the injection needle pierces the beef block, the air pump 503 is turned on to press out the marinade solution in the injection tube 505, thereby controlling the amount of marinade solution discharged from each injection needle during each injection process to be the same, thereby improving the uniformity of the marinade solution injection to the beef.

[0053] In order to facilitate the effective conveying of the beef blocks on the conveyor 300 into the space between the two rows of support rods 402 at the end of the shaft bar 401 close to the conveyor 300, and to facilitate the conveying and discharge of the beef blocks between the two rows of support rods 402 at the end of the shaft bar 401 far from the conveyor 300, a bottom plate 601 is fixed at the lower end of the two support plates 100, and the bottom plate 601 is located below the shaft bar 401. When the support rod 402 is placed vertically, the lower end of the support rod 402 is located above the bottom plate 601;

[0054] A pair of first rotating rollers 602 are rotatably connected between the two support plates 100. The first rotating rollers 602 are coaxially placed with the shaft bar 401. The two first rotating rollers 602 are symmetrically placed about the vertical plane where the central axis of the shaft bar 401 is located. A row of transmission wheels 603 are provided on the side of the first rotating rollers 602 close to the shaft bar 401. Any row of transmission wheels 603 includes a plurality of transmission wheels 603 that are evenly distributed along the axial direction of the shaft bar 401. The transmission wheels 603 are coaxially placed with the first rotating rollers 602. The transmission wheels 603 are located between the gaps between any two adjacent support rods 402. The transmission wheels 603 are fixedly supported on the bottom by support bars 604. Above the plate 601, a first annular belt 605 is sleeved between the transmission wheel 603 and the first roller 602 on the corresponding side, and the upper end surfaces of the first annular belt 605 are flush with the upper end surface of the conveyor 300. A pair of second rotating motors 606 are fixedly installed on the support plate 100, and the second rotating motors 606 correspond to the first rollers 602 one by one. The output shafts of the second rotating motors 606 rotate through the support plate 100 and are connected to the corresponding first rollers 602; the corresponding first rollers 602 are driven by the second rotating motors 606, and the first rollers 602 drive the first annular belt 605, thereby driving the beef blocks close to or away from the axis 401.

[0055] The lifting unit includes a pair of third telescopic cylinders 513 vertically fixed on the fixed plate 200, and the output ends of the third telescopic cylinders 513 are fixed to the upper end of the first liquid storage tank 501; the first liquid storage tank 501 is driven to move up and down by the third telescopic cylinders 513.

[0056] In order to facilitate timely replenishment of the marinade solution in the first liquid storage tank 501, a second liquid storage tank 514 is placed on the upper end of the fixed plate 200. The second liquid storage tank 514 is in the shape of a shell with an upper end open. A water pump is placed in the second liquid storage tank 514. The output end of the water pump is connected to a water pipe 515. The other end of the water pipe 515 is connected to the inside of the first liquid storage tank 501, and the water pipe 515 is always located above the second lifting plate 511.

[0057] The second liquid storage tank 514 stores a marinade solution. When the marinade solution in the first liquid storage tank 501 is insufficient, the water pump can be turned on to transfer the marinade solution in the second liquid storage tank 514 into the first liquid storage tank 501 through the water pipe 515.

[0058] Preferably, a detachably connected box cover is provided at the upper end of the second liquid storage tank 514, and a pipe valve is provided on the water pipe 515.

[0059] The conveyor 300 includes a support frame 301, on which a pair of second rollers 302 coaxially arranged with the axis 401 are rotatably connected, a second annular belt 303 is sleeved between the two second rollers 302, and a third rotating motor 304 for driving any second roller 302 is installed on the support frame 301; the second rollers 302 and the second annular belt 303 are driven by the third rotating motor 304 to convey the beef chunks to the flipping mechanism end.

[0060] In the present application, the conveyor 300 may also be a roller conveyor 300, which can be used to convey beef chunks.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A beef marinade injection device, comprising a pair of vertically placed support plates (100), characterized in that: A fixing plate (200) is fixed to the upper ends of the two support plates (100), a turning mechanism is provided between the two support plates (100), an injection mechanism is provided directly above the turning mechanism, and a conveyor (300) is provided at one end of the support plate (100) and is placed horizontally and faces the turning mechanism; The flip mechanism comprises an axis bar (401) rotatably connected between two support plates (100), the axis bar (401) is horizontally placed, and the axis bar (401) is vertically placed with respect to the conveying direction of the conveyor (300), and two rows of support rods (402) symmetrically placed up and down are fixed on the axis bar (401), and any row of support rods (402) comprises a plurality of support rods (402) uniformly distributed along the axial direction of the axis bar (401), and the support rods (402) are horizontally placed. The support plate (402) is flat and placed vertically with respect to the axis (401), and both ends of the support rod (402) are placed symmetrically with respect to the axis (401). The conveyor (300) is used to convey the beef chunks to the axis (401) between two rows of support rods (402) near the conveyor (300) end. A first rotating motor (403) is fixed on any support plate (100), and an output shaft of the first rotating motor (403) rotates through the support plate (100) and is fixed to the axis (401); The injection mechanism comprises a first liquid storage tank (501) arranged between the shaft (401) and the fixed plate (200), the first liquid storage tank (501) being in the shape of a sealed shell with a hollow interior, the first liquid storage tank (501) being filled with a marinade solution, two injection parts being arranged at the bottom of the first liquid storage tank (501), the two injection parts being respectively arranged at two sides of the shaft (401), each injection part comprising a plurality of injection needles being evenly distributed, the upper ends of the injection needles being in the shape of an opening and being connected to the interior of the first liquid storage tank (501), the lower ends of the injection needles being provided with liquid outlets (502), an air pump (503) being installed on the fixed plate (200), the output end of the air pump (503) being connected to an air pipe (504), the other end of the air pipe (504) being connected to the first liquid storage tank (501), and a lifting unit for driving the first liquid storage tank (501) to move upward and downward being installed on the fixed plate (200).

2. The beef marinade injection device according to claim 1, characterized in that: The injection needles all include an injection tube (505) vertically fixed to the bottom of the first liquid storage tank (501), the upper and lower ends of the injection tube (505) are open, and the upper end of the injection tube (505) is connected to the inside of the first liquid storage tank (501), and the lower end of the injection tube (505) is provided with a convex head (506) with a hollow interior, and the convex head (506) is used to seal and block the lower end of the injection tube (505), and the convex head (506) is connected to the injection tube (505), and the liquid outlet (502) is opened on the peripheral wall of the convex head (506), and the liquid outlet (502) is evenly distributed in a ring shape. A plurality of injection tubes (505) are provided with a coaxially arranged shaft (507) inside, the lower end of the shaft (507) slides through the convex head (506), the diameter of the shaft (507) is smaller than the inner diameter of the injection tube (505), a conical portion (508) which is hollow inside and open at the upper end is fixed to the lower end of the shaft (507), the diameter of the outer wall of the upper end of the conical portion (508) is equal to the diameter of the outer peripheral wall of the injection tube (505), when the upper end of the conical portion (508) is in contact with the lower end of the injection tube (505), the convex head (506) is received inside the conical portion (508).

3. The beef marinade injection device according to claim 2, characterized in that: The injection mechanism also includes a first lifting plate (509) placed above the first liquid storage tank (501), the upper ends of the shaft rods (507) slide through the first liquid storage tank (501) and are fixed to the first lifting plate (509), and a pair of first telescopic cylinders (510) placed vertically upward are fixedly installed on the outer side wall of the first liquid storage tank (501), and the output ends of the first telescopic cylinders (510) are fixed to the first lifting plate (509).

4. The beef marinade injection device according to claim 3, characterized in that: The upper end of the injection tube (505) extends into the first liquid storage tank (501), and the upper end surface of the injection tube (505) is higher than the inner bottom surface of the first liquid storage tank (501); The injection mechanism further comprises a second lifting plate (511) slidably connected to the inside of the first liquid storage tank (501); the peripheral wall of the second lifting plate (511) is in contact with the inner peripheral wall of the first liquid storage tank (501); the upper end of the injection tube (505) slides through the second lifting plate (511); a second telescopic cylinder (512) vertically downwardly placed is fixed on the inner top surface of the first liquid storage tank (501); the output end of the second telescopic cylinder (512) is fixed to the upper end of the second lifting plate (511); the marinade solution is located above the second lifting plate (511); and the air pipe (504) is always located above the second lifting plate (511).

5. The beef marinade injection device according to claim 4, characterized in that: A bottom plate (601) is fixed at the lower ends of the two support plates (100), and the bottom plate (601) is located below the shaft (401). When the support rod (402) is placed vertically, the lower end of the support rod (402) is located above the bottom plate (601); A pair of first rotating rollers (602) are rotatably connected between the two support plates (100), the first rotating rollers (602) are coaxially arranged with the shaft bar (401), the two first rotating rollers (602) are symmetrically arranged with respect to a vertical plane where the central axis of the shaft bar (401) is located, a row of transmission wheels (603) are arranged on one side of the first rotating rollers (602) close to the shaft bar (401), any row of transmission wheels (603) includes a plurality of transmission wheels (603) evenly arranged along the axial direction of the shaft bar (401), the transmission wheels (603) are coaxially arranged with the first rotating rollers (602), and the transmission wheels (603) are located between any two adjacent support rods ( The transmission wheels (603) are fixedly supported above the bottom plate (601) by support strips (604), a first annular belt (605) is sleeved between the transmission wheels (603) and the first rollers (602) on the corresponding sides, the upper end surfaces of the first annular belts (605) are flush with the upper end surfaces of the conveyor (300), a pair of second rotating motors (606) are fixedly mounted on the support plate (100), the second rotating motors (606) correspond to the first rollers (602) one by one, and the output shafts of the second rotating motors (606) rotate through the support plate (100) and are connected to the corresponding first rollers (602).

6. The beef marinade injection device according to claim 5, characterized in that: The lifting unit comprises a pair of third telescopic cylinders (513) vertically fixedly mounted on the fixed plate (200), and the output ends of the third telescopic cylinders (513) are both fixed to the upper end of the first liquid storage tank (501).

7. The beef marinade injection device according to claim 6, characterized in that: A second liquid storage tank (514) is placed on the upper end of the fixed plate (200). The second liquid storage tank (514) is in the shape of a shell with an open upper end. A water pump is placed in the second liquid storage tank (514). The output end of the water pump is connected to a water pipe (515). The other end of the water pipe (515) is connected to the inside of the first liquid storage tank (501). The water pipe (515) is always located above the second lifting plate (511).

8. The beef marinade injection device according to claim 7, characterized in that: The conveyor (300) comprises a support frame (301), a pair of second rollers (302) coaxially arranged with the shaft (401) are rotatably connected to the support frame (301), a second annular belt (303) is sleeved between the two second rollers (302), and a third rotating motor (304) for driving any of the second rollers (302) is installed on the support frame (301).

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